AUGUST 1982

volume 12, number 123

IC D 08 545

74820 08545 of Champs

1979 Nationals . . . here are some of the 1st place winners You too can be in the winner's circle. Use the Props of the Champs! > R C Master Pattern Op. — Dave Brown (Ohio) — 1st R C Quarter Midget Op. — Wayne Yeager (Michigan) — 1st μ, R C Quarter Midget Jr, — David Cohen (Michigan) — 1st y r- R C Precision Scale Op.— Bob Wischer (Wisconsin)— 1st / ■ / OVER A HUNDRED C L Precision Scale Op. — Mike Gretz (Iowa) — 1st / C L Precision Scale Jr. — Matt Bauer (Illinois) — 1st / DIFFERENT PROPS C L Sport Scale Jr. — Matt Bauer (Illinois) — 1st TO CHOOSE FROM! C L B-P'oto Speed Op. — Wisniewski Team / (California) — 1st fy S ffE r ■·' A size for every flying requirement! C/L B-Proio Speed Jr. — Quay J. Barber / (Ohio) — 1st / PYLON RACING PROPS C/L FAI Speed Op. — Akeshi Kusumoto / (Japan)— t st / C/L FAI Combat Sr. — Tom Fluker /

C/L Slow Combat Op. — Marvin / Denny (Kansas) — 1st / / b A Y SUPER-M POWER PROPS F/F D-Gas Sr — Charles E. Jr· t \ / Diameter Carney (Flonda) — 1st / Ύ X 6, 8. 10. 11 F/F Outdoor Scale O p . / « / O 4. 6. 10 Larry F. Kruse J f ■' 1 A i O 6. 8. 10 6. 8, 10. 11 (Kansas) — 1st J K ;W y / 8. 10. 11 F/F A-Gas Jr ÆQhy r* / Draycott Hooke / (Pennsylvania) J fff'/.' / SUPER-M TOP FLITE PROPS NYLON PROPS SPEED PROPS Diam. Pitch 6" 3. 4. 5 T 3, 4. 6 8 ' 4, 5. 6, 8 9” 4. 5. 6, 7, 8 10" 4, 5. 6. 8 11" 4, 5. 6. 7, 7%. 8. 8V< 12" 4, 5. 6, 8 13” 5, 6 14" 4 ,6 is precision carved, balanced and fuel-proof finished for superior periormance

■ r / TOP FLITE MODELS, Inc. 2635 S. Wabash Ave. γ / Chicago, Illinois 60616

For our latest catalog and prop chart, send request with $1.00 to Top Flite. □ TARGET RERUN. MISSION 250 6 MAR Walter Boyne Apparently ageless, the 8-52 DEVELOPMENT, by Alexander Uppisch 1944 oy Jeffrey Ethel) and Alfred Price The has been America's first line of defense for Lippisch was a pioneer in swept wing and story of the first fuliscale daylight raid delta wing design, a principle incorporated against Hitler's capital city, this compelling nearty 30 years. This well-written book defines Ihe ancestry and development ol in almost every high-performance airplane book ts a documentary of all viewpoints, ihe B-52. as wen as us peace keeping role flying today. His most famous creation was from both sides. In ihe air and on the Ihe ME 163 Komet, but his aeronautical ground Woven together are the combat and ns iRustrious combat career in Viet­ nam Numerous illustrations and 150 black genius was evident Iona belore WW II. and reports and recollections ot more than 160 & white photos show the BUFF in ns many continued long after This book traces ms participants and observers This ep* mis­ career trom early glider designs m the sion was the entire bomber campaign in guises, from shining nuclear bomber to 1920s to hts aerodyne concepts in the U S capsule lorm Maps, diagrams, and 72 camouflaged ‘Iron bomb" warrior. Four­ teen pages ol appendices on models & during the 1970s 105 rare photos and B4W photographs 212 pgs . 6Vk-«9W'. dozens ol drawings and chans 126 pgs hardbound 19.95 numbers built, modification programs, 8V»’ x 9 V i- hardbound 15.95 units and bases, and present dispositions

□ The War in the Air. WW II. Cot Gene Gurney □ Messerschmitt Me 262: Arrow To The Future 10.951 □ W orld's Great Fighter A /C , Green & Swan- □ Albatross D V i. German Fighter WW l. Mikesh 8 95 borough □ The Jet Age: 40 Years ol Jet Aviation. Boyne 8 95 □ 1000 Destroyed. H all. 4th Fighter Group □ P-80 Shooting Star. Woolndge 6 95 □ My Secret WW. Oury. Skyraiders in Vietnam □ Excatibur III. Story Smithsonian P-51 5.95 □ The Interrogator. lu ftw a tt's Hanns Scharff □ Aircraft 01 The USAF. 60 years in picture 12.95 Fighter Aces Of The USA Toliver & Constable □ Strategic Air Comman: People. A /C & Missies 17.95 Air War. JaWonski was $40 00 tn 4 vols □ Herk Hero 01 The Skies. Dabney C-130's 12.95 Test Pilots. Hallton. Jenny to Gemini □ MiG Master: Story F-8Crusader. Tillman 17.95 □ Ency World's Commercial & Private Aircraft F-86 Sabre In Color. Davis 16pgs full color 5.95 Thundering Peacemaker. B-36 Story 4 95 Bombers In Blue. Johnsen 4 95. □ Blue Angels. Excellent photos & text 14.951 □ Deadly Duo. B-25&B-26 in WWl 19.95 □ III. History ot Fighters, Gunston 13.95 □ Fighters ol the Fifties. Gunston 22.95 □ History ot the U.S. Air Force. Anderton 16.95 w ith any B k * · * □ Flying Colors. Green & Swanborough, 112 A/C 24.95 purchase . from H.A. □ Ency of German Military Aircraft. Philpott 10.95 Dramatic full color print ot a P-38 Lightning'' jumping □ F-15 Eagle. Jett Ethell 17.95 a Jap Zero. □ F-104 Starfighter. Authur Reed 17.95 ·— \~ Yesterday's Wings. Bowers 7.95 □ F-105 Thunderchiet, Jeny Scutts 17.95 Sm l Flying The Old Planes, by Tallman 17.95 Sever The Sky. Maloney Seversky A /C ot '30 s 8 95 □ B-52 Stratofortress. Ethell & Christy 17.95 t l C Reuben Fleet. Consolidated A /C 16.95 □ Pictorial History ol the Blue Angels. McGuire . 7.95 □ Darkly Dangerous. Johnsen P-61 Black Widow 4.95 1 C Commercial Aircraft. Jet airline & business A/C 12.95 U.S Navy Aircraft Since 1911.545pgs 18.50 □ A-10 Thunderbolt II. DeMano. Excellent ret 9.95 Propeller Airliners. Gunston 12.95 Corsair: F4U in WW II and Korea Tillman 17.95 B-17 Fortress, in Detail & Scale. Lloyd & Moore 6.95 B[ World Greatest Airplanes. Gunston 12.95 Hellcat: F6FmWWII. Tillman. 265 pgs 17.95 □ F-4 Phantom II in Detail & Scale. Bert Kmzey 6.95 A ircraft Piston Engines, Sm ith 18.95 Oauntless Dive Bomber olW W II, Tillman 17.95 □ Grumman Tiger FIIF-I. Gmter 3.95 B f 1927. Summer Ot Eagles. H uttig 11.95 U . S Naval Fighters ot WW II. 0 ' Leary 17 95 □ McDonnell Banshee F2H-1. 2. B. N P.3. 4, 7.95 Bn The Barnstormers. Don O wiggins 5.95 McDonnell FH-1 Phantom. Ginter 4.25 ^ H ( i Wmgs ot Man: S tory Dick M errill, by King 18.95 CROWN COLOR SERIES □ Douglas F3-D Skynight, Ginter 9.95 J i B Π A World To Conquer. Arm y Air Ser. w orld fl 12.95 □ P-51 Mustang. Grinsell 15.95 □ North American T-28 Trojan. Ginter 8.95 I National Air R acers-1932. Charles Mandrake 9.95 □ Hellcat. Anderton 15.95 The Mighty Eighth. Freeman 16 95 f f I The Arl Chester Story. Caler. 98 phoios 4.95 C Spitfire, Sweetman 15.95 I [ Howard Hughes & the Spruce Goose, M cDonald 8.95 □ Zero Fighter. M ikesh 15.95 Ninth Air Force in WW II. Rust 16.95 I Rutan Homebuilt Aircraft. Downie 8 Messerschmitt Bf 109, G rinsell 15.95 Mongram Painting Guide To Germ. AC '3 5 -'4 5 39.95 — 4 Ultralight Aircraft. Markowski. 40 types 12. □ Focke-WuH Fw 190. Grinsell 15.95 □ Boomerang. Victor Tannehill 40.00 AIRMAIL An llkiitrated History 1793-1981 π ENCYCLOPEDIA OF THE WORLD'S COM­ U.S. CIVIL. VOL 9. by Joseph Juptner f 1 I I I by D anjld Holmes This is Ihe first complete MERCIAL AND PRIVATE AIRCRAFT ’ 78 Long awaited, this is the final volume ol the - - 1— r,n 1 history ol Ihe development ot the an mail diagrams. 115 color profiles. 200 color senes Covers ATC 801-817 Aeronea & Wmf · M network With hundreds ol aii mail stamps photos. 4-color three-way views 20 Luscombe Sedan the Deluxe Vagabond covers, and other official mjrkmps cutaways Most comprehensive book on Mooney Mite. Boeing Stratocruiser reproduced tn exacting color as we» as cnnl arrcratl ever produced m color Encom­ OeHaviitand Beaver Oner 6 Dove the dramatic black and white photographs ol passes over 250 contemporary airframes: modilied ATC s. and the LTC’s (Lim ited e personalities and historic moments m air airliners, commuter craft, Irafahierj. cor­ Type Certificated-Military A/C converted to I f ^ / mail history this book will be a treat for porate. heftcopiers and light planes Each civilian use) AT-6 B-25 P-38 F8F etc / every avaiation buff and philatelist type i$ thus with a 3-view drawing and a Also includes a master index ol all A/C in / 9% "«9% 240 pgs hardcover 27 95 color photo 256 pgs 9“x t? ' hardcover vols 1-9 287 photos. 240 pgs . 7"xt0’ 16 95 / A-10 THUNOERBOU II by Roben OeMarto hardbound 17 95 B ‘ 2 6 í S h?r / Specialty written lor modelers by a man F4U CORSAIR IN COLOR by Jim Sullivan I B-26 MARAUDER IN ACTION by Steve Bird- who helped engineer the A-10 this book is Coverage w ith the modeler ui m ind, the sail Much maligned, given the name 1 · % / an excellent ι defence Pages tun ot cut- F4U-1. F4U-2. F4U-4. and F4U-5N are "Widowmaker the Martin B-26 was still r ^ · / away drawings camouflage schemes shown in 56 color and B&W photos and in ■A— - / detail photos and tech manual illustrations color 4 -view artwork Detail emphasis on the most widely used medium bomber m WW II This history covers the B-26 with / of election seats cockpit details, gear In- cockpits wheel wells and ordnance with 100 photos. 4-vlews 13 full color pamungs / tenors and underwing munitions are the more than 25 profiles and 63 detail paint­ _ / best yet Serial lists and units hying, 60 ings by Don Greer 32 pgs B W xir. and numerous line drawings 50 pos photos.60pgs .8*"*11 "sohcovet 995 soheover 5.95 11"a8W*\ softcover 4.95 ( JANE SERIES Ak Force Colors. V o M . 1926 1942. Bell 7.95 THE PUTNAM SERIES B □ Mighty Eighth War Diary. Roger Freeman 29. Ak Force Colors. Vo· 2. ETO & M TO '42-'45 7.95 □ Curtiss Aircraft 1907-1947. Bowers. 640pgs B e Target Berlin. Ethell & Price 19 SQUADRON/SIGNAL IN ACTION $4.95 EACH □ McDonnell Douglas Aircraft— 1920. 721 pgs P-51 Mustang Messerscfunilt Bt 109 □ Japanese Aircraft Of The Pac. War. 570 pgs i .;F4U Corsair DFocåe Wulf FW 190 □ British Fighter Since 1912.415 pgs □ F6F Hellcat DA-IOWarthog □ German Akcratt of WW II. 745 pgs } P-38 Lightning □ Spitfire

IerttssP-40 ClF-5 Γhundertoolt P-47 □ F-8 Crusader - Ť H IST O R IC AVIATION Joeing B-17 D M 4 Tomcat 3850 BCORONATION RO EAGAN MN 55112 L24 Liberator D M 5 Eagle \ n Invader [ P-80 T33 F94 3-25 Mitchell I F-86 Sabre Ϊ-29 Superlortress □ M04 Starfighter 9-36 □ F-105 ThuntfercMel 9-47 Stratotet DF-106 Deka Dart i-52 Stratofortress DM 11 Handling Fee M 30 Hercules ( Gunskngers »V-1 Ventura I Albatross Fighter WW I ENCLOSED IS Total (U.S Funds) AIR FORCE STORY WW II hv RUST rrtth 7.95 Thirteenth ' 7 :h ARGE VISA □ MASTER CHARGE Seventh 7.95 Fourteenth 7 B e Mustang. A Documentary History. Ethell 18. Eighth 7.95 Fifteenth 7 fenth 7.95 Twentieth 7 B e Boeing B-52. A Documentary History. Boyne 19. rweitth 795 ■ □ German Air Force 1933-1945. Cooper 19 PILOT MANUALS I □ KC-200: The True Story. P W Stahl 19 □ P-38 Lighting IIB -2 5 Mitchell 10 B [ German Jets tn Combat. Ethell & Price 17 ; P-39 Airacaba □ B-26 Marauder 6 B f Mosquito. Philip Britles 19 □ F-4U Corsair 7 I □ F-6F Htfcst 7 Address Γ Heinkel HE 111. Heinz Nowarra 19 B [J FM-2 Wildcat 10 B t ! Luftwaffe Test Pilot. Hans-Werner Lerche 19 □ Teaan AT-6 6 ■ D Fokker. A C Builders to the World. Postma 19 □ SpMre 3 B Γ German Night Fighter Force. 1917-45. Aders 19 Hurricane 3 AT WAR SERIES fjB-24 Liberator A-20 Havoc At War. Hess 17.: Avenger At War. Tillman 17 B-29 Superfortress At War. Anderson 19 ! Typhoon and Tempest At War. Reed 14 ! Messerschmitt BM 09 At War. van Ishoven 14 ! □ Stuka At War. Smith 19.! ‘■J B-57 Canberra At Wzt: 1964-1972, Mikesh 17,! I U.S. CIVIL AIRCRAFT by Joe Juptner 3 D Voi, II. ATC *101 thru #200.1929 , 17. • a □ Vol. III. ATC #201 thru #300.1929-30 17. I -J LVol.lV. ATC #301 thru #400.1931-33 .. 17. ·= Vol ».ATC#401 Ihru#500.1931-33 17. l g C Vol. VI. ATC #501 Ihru #600.1933-36 17. I Vol. VII. ATC #601 Ihru #700,1936-39 17. If □ Vol. VIII. ATC #701 Ihru # 8 0 0 ,1939-48 17. < il Vol. IX. ATC *801 thru *8)7.1948- 17. AUGUST

MODEL / 1982 BUILDER volume 12, number 127 621 West Nineteenth St.,Box 335,Costa Mesa.CA 92627-0132 Phone: (714) 645-8830

CONTENTS STAFF

EDITOR/PUBLISHER FEATURES Wm. C. Northrop, |r. W O R K B E N C H , Bill N orthrop...... 6 O V E R T H E C O U N T E R , John E llio t...... 7 GENERAL MANAGER R /C W O R L D , John Elliot ...... 10 Anit.t Northrop

B IG B IR D S , Al A lm an...... 14 ASSISTANT EDITOR FUEL LIN E S , Joe Klause ...... ; ...... 16 John Elliot F U T U B A “G" SERIES R A D IO , Eloy Marez...... 22 ASSISTANT GENERAL MANAGER E L E C T R O N IC S C O R N E R , Eloy M a re z...... 24 Dawn Holcomb

HO W TO FLY PATTERN, Dick Hanson...... 26 DRAWINGS BY “ 1 T O 1 ” R /C S C A LE , Bob Underwood ...... 27 AI Patterson E LE C T R IC P O W E R , Mitch Poling...... 28 OFFICE STAFF Edie Downs R /C S O A R IN G , Dr. Larry Fogel...... 30 Mike Whitney A. Valcarsel AMERICAN R/C HELI SUPER MANTIS (Pt. 2), Ray Hostetler ...... 32 THORNBURG AT LARGE, Dave Thornburg ...... 34 CONTRIBUTING EDITORS R/C AUTO NEWS, Dan Rutherford...... 36 Al Alman Joe Klause

JVS OFFSHORE TUNNEL, a i Berry...... 38 Jerry Dunlap Eloy Marez Larry Fogel Walt Mooney R /C P O W E R B O A T S , Jerry Dunlap...... 39 Jim Gager Mitch Poling CHOPPER CHATTER, Ray Hostetler...... 41 Bill Hannan John Pond P L U G S PA R KS , John Pond...... 42 Dick Hanson Fernando Ramos IN D O O R , Ken Johnson...... 46 Ray Hostetler Dan Rutherford Tom Hutchinson Dave Thornburg T H E B A C K W A R D BEE, Bill Hannan ...... 48 Ken Johnson Bob Underwood H A N N A N 'S H A N G A R , Bill Hannan...... 50 FREE F L IG H T S C A LE , Fernando Ramos ...... 54 ADVERTISING FREE F L IG H T , Tom Hutchinson...... 56 John Elliot C O N T R O L L IN E , Dan Rutherford ...... 60 Wm. C. Northrop. Jr

MODEL BUILDER (ISSN 019a 7079) is p u b lis h e d m o n th ly by R C M 8 IN C ., 621 West Nineteenth Street. Costa Mesa, Cali­ fornia 92627. Phone (714) 645-8830.

CONSTRUCTION Subscriptions: $25.00 per year, $47.00 for two years. Single copies $2.50. Add $7.00 JOE RASPANTE’S “ SNOW WHITE” , AI H o lm e s ...... 17 per year for postage outside the U.S. (except APO & FPO). All payments must be in U.S. “ BOTHORNE” BOSTONIAN, Barnaby W ainfan ...... 47 funds, drawn on a U.S. bank.

Copyright 1982 by RCMB INC. All rights reserved. Reproduction without permis­ sion prohibited.

Change of address notices must be received six weeks before date of issue that new Cover: Top photo is of Mick Charles' Supermarine S-5 Schneider Cup racer. Powered by address takes effect. Send old address with a Webra Speed 61 and using a Futaba "J " series radio, the model is to 1/5th scale. This beautiful racer was a not-too-distant relative of the famous Spitfire fighter of WW-II fame. new; old label preferred. Post Office will Photo by Ron Moulton, Managing Director of Model & Allied Publications, England. not forward copies unless you pay extra Aircraft in the bottom photo by AI Holmes, is the historic "Snow W hite", designed postage. Duplicate issues cannol be sent. and built by Joe Raspante. This is one of the last photos taken before AI began dismant­ ling the model to make the fine set of drawings featured in this issue. Second class postage paid at Costa Mesa. California, and additional offices.

2 MODEL BUILDER Changing track conditions can servo reverse switch­ Convrnient needle »elve send RC cars scurrying into the ing, electronic trim, adjustment knob. pits for a linkage adjustment that mixing and throttle Fxcluvive torque compensation ^ could take laps to complete. fine tune in the hand mixing control. The driver with Futaba’s 3FG some brushed alloy doesn’t panic though, because he case. Prefer TWin-stick control' 3, has Total Control on his side. The 3-channel 3FG We’ve built the 3F.G model for >ou. Vailahle A flick of a lever and the system is available with with S26 or S27 servos. adjustable dual rate takes over. a wide range of servo options, too. Ultra mini for 1:12 scale electrics, while

Increase or decrease steering S20 servos are perfect boat and gas car racers favor the servo throw while maintaining full lock-to-iock control. The S2i Gentlemen, choose sour servos. watertight, heavy-duty S27’s. 3FG gives sou a choice, on the track. And for total performance,

The deluxe 3FG/3- the 3FG can be ordered channel svstem includes An oversteering, R3F triple-tuned receiver, with high-torque, coreless 2-S24 servos, NiC'ads and sliding car charger. 27 and 72MHi. motor S24’s and recharge­ I ft-Futaba . I o g g a instantly able NiCad batteries. responds to the ® ® pre-set steering ratio and is dialed-in again.

The 3FG system was developed by and for serious racers. In addition to rate control, you’ll also find :λ w:.·« Track tune your racer τ' from the driver’s stand with the new Futaba 3PG. - 4 λ Γ Λ ICollective George in finished the 3rd expert class and Curtis showed hisyoung father how it just beshould in the first Schluter Westinthe Schluter first Contest,Coast Helicopter this May, andas see can you well.quite did f* & S É Ask Curtis and George Croker. They both flew stock Supermantis Helicopters (8 months old) Ask Curtis and Helicopters George months Croker.(8 flew both They stock Supermantis YOU DON’T HAVE TO SPEND A LOT FOR THE BEST! THE FOR LOT A SPEND HAVEDON’TTO YOU noaieadtedetn ein ih efrac htcntb beat!be can't that performance with design trendsetting and innovative itrd et o rg : og ad ri Crkr/ Heiotr b merican Am by elicopters H / roker C urtis C and eorge G t: righ to left Pictured R/C I le lico p tcrsjn c. c. tcrsjn p lico Ile R/C a SC1PERMANT1S merica n lig cmeio' 6 pwrd oe fnse second. finished model powered .60 competitor's a flying 1 Robert Gorham, Supermantis. poweredcapturing his .40done, stwithplace Discover Discover quality make.canFlythe leading difference the Supermantis, way in th t cina Mehncl l trCo nation. ensa p om C otor R il a T echanical M al nction u F ith w itch P 635-Π North Twin Oaks Valley TwinOaks North Road 635-Π SUPERMANTIS Price Is Subject to Change without Notice. Notice. without Change to Subject Is Price ★ ais y Futaba. by Radios SanMarcos. CA92069, ( 714 ) 744 OE BUILDER MODEL

7533 OLD REUABLE NOW THE MIW RELIABLE! The K&B .40 R/C has been revamped INSIDE and OUTSIDE

After years and years of accep­ tance as one of the most dependable and top performing engines in its class the decision was made that the K&B .40 R/C was long over due for a change. The time had finally arrived to include many of the develop­ ments incorporated in our high performance racing engines. The addition of these tried and proven features has substantially increased the K&B .40’s durability and dependability while retaining its well-known quality performance.

These features include: • Con Rod, machined from high tensile strength aluminum stock, bushed at both ends . Piston Wrist Pin Hole, fitted with bronze bushings . K&B’s own Super Bearings, front and rear • Tapered Collet type Prop Driver • New Crankshaft See it at your local Hobby Shop. • New K&B All Metal Carburetor They serve you better... they can provide assistance, answers Fly with the NEW dependable K&B .40 and service. R/C, the engine that excells in Sport Pat­ em Flying, R/C Scale, and the “Quickie 500”. With all these modifications it has become a better and different K&B MANUFACTURING engine, designated as the No. 4011. 12152 WOODRUFF AVE., DOWNEY, CA 90241 / r o m

B i l l "Smooth Hare" was short lived (bad battery in pulse box) follow-on "Square Hare" by MB’s N o r t h r o p ' * Editor, dating February 1963. Won Intermediate Design trophy at Weak Signals Toledo Show. Cameron .19. Kraft single-channel. Galloping Ghost for proportional rudder and elevator. Note typical GG "birdcage" wire crank linkage on elevators. w o r k b e n c h former aircraft mechanic on A3D Sky- continental United States and its posses­ warriors, who was also an engineering/ sions, is that AMA must regulate models • · · technical draftsman for the old Glenn L. to the satisfaction of the FAA. If not, the Martin Company, and a builder of FAA will step in with its own version of THE TIME IS NOW model aircraft for thirty years. model aircraft regulations . . . some­ "Dear Mr. Northrop, I agree with his basic concern, and thing we as modelers would find very "You are no doubt aware of the have on several occasions written to difficult to live with. . . Government incident that occurred at the Mint lulep AMA officials (to no avail) on the need regulation of our modeling activities! scale meet this past month, where a 125- for a clearly defined line of separation Several times in past years, the FAA or-so-pound 'model' airplane ran out of between an aircraft, which falls under (usually as the result of highly publicized control during its takeoff attempt and FAA jurisdiction, and a model aircraft, and exaggerated news media reports of swerved into a runway light (and which comes under AMA regulation an incident between a model and full- smashed it) instead of swerving in the and responsibility. It is vital to the model size aircraft) has taken a closer look at other direction to possibly cut a swath aircraft hobby that this line of definition our activities, to determine if it should through the flesh and bone of several be established A.S.A.P.! Our relation­ take over regulation of model aircraft. I human beings with its four(!) power- ship with the FAA, which is responsible can remember a Chicago Nationals lawn-mower-size hardwood propellers. for control of the airspace over the where the word got around that an "Seeing the sadness and difficulty that official FAA observer was among the our U.S. President’s former press-aid spectators. Fortunately, he was singled James Brady (and his family!) is experi­ out and thoroughly briefed by respon­ encing today (according to recent news­ sible AMA officers. paper accounts) since a reckless madman With the coming of model aircraft invaded his skull with a small metal “ heavies” , and the seeming ego trip on object a few months ago; I have come to the part of some modelers to out-do the conclusion, my friend, that I wish to everyone else in size and weight of their see the AM A and all responsible people “ model aircraft", AMA must step in withdraw sanction from the growing quickly and establish a limit of respon­ interest to fly so-called powered airplane sibility. This has nothing to do with rules models (?) that are so overpowered and and specifications for any competition heavy that they present a very serious class but simply, what is a model aircraft, threat to the safety and well-being of under AMA’s responsibility, and what is both pit crews and innocent spectators. not. As this insanity grows, and more ‘giant Currently, our provisional rules for scale'models with chainsaw-size engines Giant scale specify a maximum weight of are built and flown, it will only be a 40 pounds, if this weight limit could then matter of time before some poor soul be established as the maximum weight finds a piece of hardwood propeller for a model aircraft under AMA regu­ sticking five or six inches into his or her lations and responsibility, then any brain. “ model" weighing more is not a model, ",And I, myself, want no part in this and becomes the owner’s sole, legal foolishness, Bill - I only hope that you responsibility. As such, it could not be might feel the same way about this flown at any AMA function unless the growing mania, my friend, and that you owner can provide proper insurance consider using Model Builder as a forum coverage for himself and the field to air this thought.” Ray Forbes, who instituted the very successful dealer-direct sales program at Kraft Systems, owner. Writer of the above letter is Cyrus has been named Vice President of its Hobby Stow, a dentist from Conyers, Georgia, a Products Group. Continued on page 89

6 MODEL BUILDER OVER THE COUNTER

A ll material published in "Over the Counter" is quoted or paraphrased from press releases furnished by the manufacturers and/or their advertising agencies, unless otherwise speci­ fied. The review and/or description of any product by R/CMB does not constitute an endorsement o f that product, nor any assur­ ance as to its safety or performance by R/CMB.

• Francis Smith’s Ship Yard (formerly Prospect Park Hobby Shop) has just introduced its new model kit of the Coast Guard Patrol Boat, 'Cape Gull.’ The model builds out to 48 inches long with a beam of 10.5 inches and the kit is crafted from aircraft quality birch ply­ wood for keel bottom, bulkheads,stack, middle, and main decks, and hull sheet­ ing. Fittings are mostly brass, and tiller arms and drive shafts are provided. The mast, stack, and wheelhouse are de­ signed to be removable for mainte­ nance. For more information on this 279, Ida Grove, IA 51445. hobby items to: Cannon R/C Systems, new offering from the 'Ways of Francis ★ ★ ★ 13400-26 Saticoy St., North Hollywood, Smith,’ send a SASE to: Francis Smith’s Cannon R/C Systems has announced CA 91605. Dealer and distributor in­ Ship Yard, P.O. Box 118, Norwood, PA two different tachometers for direct quiries are invited. 19074. measurement of engine RPM. Either ★ ★ ★ ★ ★ ★ unit derives RPM data direct from the Condor Hobbies has in stock, as of this Byron Originals has, in its program of prop hub, spinner, or flywheel. No writing, the full line of Rossi engines; customer service, issued a Byro-Jet loading of even the smallest of engines from the R15 to R 90, including all the in Safety Bulletin containing some timely is claimed, and accuracy is equal to between sizes, too, in both aero and reminders for the proper operation of other mechanical or electronic tachs marine versions. Pipes, couplers, plugs, its ducted fan units and also quite costing much more. The basic tach has and most spar parts are in stock and appropriate for other fan units, in many two speed ranges; 0-10,000 and 0-25,000 more coming. The people at Condor cases. An excellent method of incor­ and lists for $22.50. The ‘ Protacho’ suggest that the modeler write (send a porating a needle valve extension is professional model has a remote sensor, SASE) or call to check on availability and included, too. Send a SASE for a copy of three speed ranges and a larger, easier price of the item in question. Condor this informative bulletin. For a copy of to read meter face. Ranges are 0-3,200, Hobbies, 17835 Sky Park Circle, Suite F, Byron Originals' latest completecatalog, 0-11,000 and 0-28,000 and lists for a Irvine, CA 92714, or call (714) send $5 (credited against your initial reasonable $34.95. Send 75

Coast Guard Patrol Boat, by Francis Smith's Ship Yard. One of full line of Rossi's, available from Condor Hobbies.

AUGUST 1982 7 prime concepts of these engines. For more information, send a SASE to: TEJA Engineering, Rt. 9, Box 399 N., Bakers­ field, CA 93309. ★ ★ ★ From out of the past, come the Flying Aces, Henry Struck designed ‘Trail Blazers.' From RET (Flying Aces) Plan Services, Rusty Toliver has had reprinted, on heavy white stock, some of the classic rubber powered models of that era. Such interesting models as the Wright Flyer Biplane with a 16-7/8 inch span, the Blériot channel flyer, the Rumpler Taube with a 22-1/2 inch span, and the Douglas Globe-Girdler at 25-inch span CMB 90 Grand Prix from TEJA Engineering. are some of the Trail Blazer plans being offered at $2.25 each, post paid. Profile CMB 60 R/C Aero Engine, TEJA Engineering. Ted Dodd of TEJA Engineering sends Quickies, such as the 20-inch span word that he is the agent for the fabu­ Bellanca YO-50and the Bell XP-39witha Panavise Products, Inc. has just cele­ lous CMB 90 'Grand Prix’ marine engine. 12-1/2 inch span are being offered for brated its twenty-fifth birthday. Otto This marine engine has been especially $1.35 each, post paid. Send a SASE for Colbert, owner of a small die cast designed for high speed and long the complete list, and more to come to: company, felt that he could design and distance racing. Constructed of specially RET (Flying Aces) Plan Service, P.O. Box develop a holding device that would selected materials and utilizing high 7893, Midfield, AL 24238. turn, tilt, and rotate, thus making his job quality control standards, the CMB 90, ★ ★ ★ and that of his fellow workers much rated at 5.5 hp at 24,000 RPM, has been International RC Specialties throws its easier. After fourteen years, PANAVISE designed to yield a long useful life. TEJA hat into the quarter-scale ring with a line surfaced in the retail hobby business. is also handling the CMB 60 R/C Aero of instrument panel kits consisting of Products were also developed that were engine, featuring a rear exhaust, rear high quality photographed instrument a boon to electronic assembly line intake ‘slide’ carburetor, and ABC set­ faces, appropriate sized O-rings, ma­ techniques. In 1978, PANAVISE was up. Horsepower of 2.4 at 17.000 RPM is chine screws, plywood and sheet cellu­ purchased by the current owner, Gary claimed, and here again, the best in loid, all for only $8.95 plus 50

8 MODEL BUILDER its present, larger location in Long Beach. Careful market study and re­ search has provided the staff, including Gary Steffen, who had joined PANAVISE as National Sales Manager and Sharon Christmas, newly promoted to the sales and marketing department, with the insight to continue as a leader in the hobby and electronics field as well. As it has been said, everyone should have a little vise, PANAVISE, that is. PANAVISE Products Inc., 2850 E. 29th St., Long Beach, CA 90806. ★ ★ ★ For those who are into scale model ships, boats, historical craft, whether for the mantel, glass showcase, for sailing, or operating via steam or electric power, Taubman Plans Service will have plans for it. The listings, of which there are over 2,000 plans available, covers every­ thing from paddle steamers, U.S. and foreign naval ships and submarines, hydrofoils, tugs and trawlers, to speed Art Chester's 'Jeep', from Wendell Hostetler plans. boats and landing craft! Also listed are many books on naval history to ship modeling. For the complete set of very presents the MAGNUM 11, a specially weight (less prop) is 4 lb. 6 oz. for this 2.5 extensive catalogs, send $5.50 to: modified, premium quality 2.5 ci model cubic engine, rated at 2.6 horsepower @ Taubman Plans Service, 11 College airplane engine, manufactured by 8500 RPM. Available now is a throttle Drive, Box 4G, Jersey City, NJ 07305. or Homelite. Features include a ball and linkage kit, on-board mixture control call (201) 435-5205. roller bearing supported crankshaft, kit, and a smoke system kit. See your ★ ★ ★ needle bearing equipped (both ends) local dealer for the MAGNUM 11, plus Contempo Hobby Products proudly connecting rod, hemi-head combustion the Eagle and the CAP 20L large-scale chamber, chrome plated cylinder, pyr­ kits. Contempo Hobby Products, 11611 amid reed intake, Schneurle porting, Cantara St., North Hollywood,CA 91605. AND, comes complete with specially Dealer and distributor inquiries are made muffler, stand-off mount, and a invited. precision machined aluminum 6-bolt ★ ★ ★ hub. All this is backed by a written one- year limited warranty by Homelite, the Tatone Products has just made avail­ nation’s largest manufacturer of chain able FLEX-OFF, a flexible metal tubing saws. Thirty-seven warranty service designed for muffler tail pipes. Features centers and over 5,000 Homelite saw are; easily bent, will hold its shape after dealers assure you of getting parts and being formed and the hot exhaust or hot service close to home. Total all-up fuel does not effect it. Made from lightweight galvanized steel and sup­ plied with a worm drive clamp, it is packaged in 12-inch lengths and avail­ able in the following sizes: 1/2-inch I.D., $5.75, 5/8-inch I.D., $6.00, 3/4-inch I.D., $6.25, and 7/8-inch I.D., $6.50. Available at most hobby shops or order direct, adding $1.50 for postage and handling. California residents, 6% sales tax. Tatone Products Corporation, 1209 Geneva Shinwa tachometer from Cannon Electronics. Instrument panel kits by International R/C Specialties. Continued on page 88

Classic 'Round Nose' hydros from Futuraglass Design. Protacho tachometer, from Cannon Electronics.

AUGUST 1982 9 The latest from Col. Art Johnson. Delray Beach, Florida, is this P-43 Lancer, forerunner of the P-47 'Jug'. It weighs 20 pounds, is Quadra powered, and is a great flier. It w ill be a future construction article.

work added to the illusion and netted a well-earned second place trophy. Dick Skoglund flew his Upton Baby Ace into first in the giant scale category. Roland S" W O R LD Baltes’ well detailed Beech Bonanza in by JOHN ELLIOT German civil markings netted him first in Sport Expert. In Sportsman, Dick Skoglund (again!) was first w ith his • Thought for the month. "If evolution gun-shy of the wall under final approach Ercoupe/Aircoupe, Rod Larson and his really works, how come modelers only north of the runway. This did not deter Aeronca Champ were second, and first have two hands?” This gem from the the team entry of Parcell/Kelly from timer, Forrest Ed wards, Jr., was third with Propwash of Waco, Texas. O r, how flying its B-25 ‘Executive Suite’ to a first a Skybolt. A good contest, a shame about this item. "Don’t worry if you start place. Others braved the wall with no losing your memory, just forget about difficulties at all. Unfortunately, several it.” Lifted from the S.A.C. Newsletter of beautiful trophys went unclaimed. Con­ Chicago, Illinois. siderable effort and planning went into ★ ★ ★ this contest, ‘tis too bad that the scale The 17th and 18th of April saw the contest types support of this contest was SGVRCL (San Gabriel Valley R/C League) so light. hosting its R/C scale event with Sports­ Forrest Edwards, Sr., builder of jewel­ man, Expert, Giant, and Team categories like radial four-strokers proved that he being contested. Turnout was light for ‘flys what he builds!’ Forrest’s big Fleet this first scale event of the So-Cal season, featured one-flip starting and horse­ partially because some planes were being power to spare, enabling his 22 pound Rod Larson’s Nosen Aeronca Champ cruises ‘saved’ for the MACS show the following Fleet to climb out at about a thirty degree by at SGVRCL contest. weekend and other R/C pilots were angle with ease! Some beautiful throttle

Roland Baltes taxiis his Beach into position for takeoff at SGVRCL Dick Skoglund's version of the Bob Upton Baby Ace. Was first in meet. Had scale long range tanks in cabin. Giant Scale at SGVRCL contest.

10 MODEL BUILDER Quarter-scale, but still only 48 inch span, is Brian "Crash" Curry's pert little Vernon Payne "Knight Twister". A future MB construction project . ,. even if Brian crashes it! attendance was down. Due to new construction on the site manufacturers had some new items and ★ ★ ★ adjoining the Long Beach Convention kits and Magic Boats had quite a line of The following weekend featured the Center, flying demos were limited to hydro’s and such on display, as did MACS show in Long Beach. The show helicopter, electric sailplanes, one ARF Prather. Circus Hobbies was snowing a appeared a bit light this year, a few 'foamy,' and some rocket launches. new ‘full house' Single Stick transmitter. major exhibitors not being present, However, the ‘chopper’ boys were really Understand it will be somewhat expen­ quite a few manufacturers are suffering out to out-do each other, including sive due to a limited market, but bully from "trade-show-itis” by now with the several passes under the airplane/heli- for them for producing it! At any rate, Chicago show in October being con­ copter-eating bridge! All were success­ it’s encouraging to see an overseas sidered by many to be the first show of ful this year, though. Not too much new manufacturer taking a serious look at the winter season, the MACS show in terms of really exciting goodies, most this particular market. Basically, Ace/Pro makes the sixth show in seven months, had been seen at Toledo, the Wrams, or Line, Kraft, and World Engines are about excluding the industry-only HIA show. the IMS show. Local west coast kit the only equipment manufacturers,

Whaddya know! Vern MacNabb, the Citizenship radio man, 79 years Enough to make any single stick switch twiddler’s fingers itch (say young and still at it. Top Flite 'Jug', Kraft radio. Art Johnson pic. it fast three times) JR's limited production latest. Can it play 'Nola'?

John Simone Jr's Super Mantis takes a bow to the spectators after a Shane Cramer's 1/6-scale P-47 won first in M ilitary Scale at MAC classy demonstration at the Long Beach MAC Show. Show, has since flown successfully.

AUGUST 1982 11 Forrest Edwards, San Pedro, scratch-built this fine running radial Forrest Jr. holds on for Forrest Sr. before 2nd place flight at 4-cvcle. Mucho power for his Concept 1/4-scale Fleet. SGVRCL meet. Combo has had many flights. That's class! domestic or otherwise, that will cater to Col. Art Johnson, of F-82, P-38L, and P- future construction article in Model ‘salad bowl’ (single stick) drivers. ‘Tis a 40 fame has been busy drawing and Builder.. . Art goes on to mention that shame as some years ago, a well de­ building again! Seems like Art has out­ he is putting pencil to paper for a 1/8- signed, human engineered single stick done himself one more time. His latest scale Martin (not Douglas) B-26 (the late system was over twenty percent of one effort is the Republic P-43, one of the Joe D’Amico would have liked that) and manufacturer’s business. Guess those forefathers of the well-known P-47 ‘Jug.’ at 1/8 scale, it would be a perfect hangar numbers just aren’t sufficient in today’s Built to a scale of 1 to 5.3, this yielded a mate for Kent ‘Cowboy’ Walters' new world . . . To paraphrase Henry Ford, 81-1/2 inch wing span and came in 1/8-scale B-17! We have heard of a 13- “ You can have any system configuration weighing 20 pounds, ready to fly, no tail foot span P-38 under construction in you want so long as it’s Mode II.” lightener required. Art powered it with a northern California, but no further However, some systems can be ordered Quadra (fully cowled) and says it's faster details as ye t... as Mode I, although in some cases the than his P-40 with an 18-8 Dynathrust or Another picture sent in by Art is of customer has to do it himself! 18-10Zinger doing thechores.Toanswer retired R/C equipment manufacturer ★ ★ ★ your next question, yes, it is to be a (does everyone retire to Florida?), 79 years young Vern MacNabb, the Citi­ zenship man, and resident ‘elder’ of the Gold Coast Radio Controllers. Vern built the Top Flite P-47 in the photo and has flown it, but has since donated the model to the club’s airshow team and is easing into gliders. See, older modelers just keep on flying! Good to hear of it, Art. .. ★ ★ ★ The cute 1/4-scale biplane reposing in front of the famed Santa Ana Blimp hangers is the handiwork of Brian "Crash” Curry. Brian developed his Knight Twister from material supplied by the Twister man himself, Vernon W. Payne. Some of you over-the-hill and not quite (?) over-the-hill gang will recall the beautiful 30-inch span control line Twister drawn by one Walt Schroder, that appeared in a late 1944 Air Trails! Well, it seems Brian was working on his model one evening in the garage and a neighbor dropped in. The neighbor knew of Brian’s hobby, so conversation about airplanes, model, and full scale ensued, and would you believe this gentleman is the grandson of Vernon W. Payne, Vernon W. Payne, III? ‘Tis a small Army Specialist IV performs maintenance in "hangar" (looks like meat locker) on his squadron of RS radio controlled RC-MATS. See text for more. U.S. Army photo. world indeed... AND, his son is Vernon W. Payne, IV! Brian’s arm has been

12 MODEL BUILDER John Elliot and Darrell Meyer stop for a picture while taking a stroll Bob "Robart" Walker mans the broom to uncover famous 'N' on wing of world's largest airplane, Hughes "Hercules". number, just to prove he was there. suitably twisted (pun intended) and hopefully in the future, we will have a construction article on this 48-inch span, 1/4-scale jewel. Brian's 1/3-scale Sop- with Pup won 1st place in Giant Sport Scale at the Macs show, a tribute to his modeling ability. ★ ★ ★ Into each life, along with some rain, the sun has been known to, from time to time, shine brightly! Back in the middle sixties, this writer was residing in the northwest Florida area, and having acquired some skill flying our R/C model aeroplanes, was invited to fly a demonstration at an Armed Forces day air show. This, plus having a good modeling friend, John Woods, who at the time was a F-101 ‘Voodoo’ instructor pilot, netted an indoctronation ride in a dual control, RF-101. To say the least, it was a high point in my life with respect to aviation. Having outgrown the Air Force height maximum limits as a four­ teen-year-old, I still managed to squeeze, or shrink myself into a flight suit Don Dombrowski and Bart Fury are dwarfed {and that's hard to do!) by Hercules. More info and rear seat of the ‘One-O-Wonder.’ It in text. Photos taken and reproduced herein by permission of Wrather Corporation. was quite a ride, not to be forgotten, ever! All of this simply leads up to another super moment. A conversation at the recent MAC’s show led to 28, April 1982 as being HK-1 or “ Spruce Goose” day. The "Robart Kids," Bob Walker and Bart Fury, his father and sister, House of Balsa's Don Dombrowkski, Darrell Meyer (one-half of the famous Meyer brothers, and the man with the clout!) and yours truly were given a fabulous tour of Mr. Hughes eighth wonder of the world by Mr. Stan Sudenberg, a long time em­ ployee of Hughes Aircraft. Some of the nistroy that Stan related was fantastic in itself. The museum, scheduled for open­ ing in March, 1983, now houses, with room to spare (!) the big Hercules, all in one piece. To have cut up into pieces this engineering achievement and scat­ tered them to the various aviation museums would have been a historical crime, indeed. Hats off to the Southern California Aero Club and especially to Wrather Entertainment International for The next Meyers brothers project after the successful 'Spruce Goose', is the Northrop XB-35 flying wing. This is partially completed scale retract main gear, minus axle. picking up the ball and preserving a very Con tinued on page 88

AUGUST 1982 13 agree more; the carnage is unbelievable . . . and unnecessary. In fact, I just finished reading about two different BIG Birds and how they both came awfully close to crashing on their maiden flights because they were severely tail-heavy. And yet both authors glossed over the hairy escapes and the immediate and dire need for mucho lead up front as though not doing your homework and bringing an unbalanced bird out for her first flight was the accepted norm. If you’ve ever had this kind of "tiger by the tail," you can count your bles­ sings, because you really haven’t missed

a thing (in fact, you must be doing PHOTO BY JIM MIURA something right, so don’t change your rocedure). If, on the other hand you ave been in this kind of panic situation, you know how that paralyzing feeling of helplessness starts deep in your stomach and works its numbing way up to your throat while you're desperately thumb­ ing in full down trim and trying to fly with full foward stick . . . which is truly Darrell Wong with his Hobby Shack Giant Stick. He added shear webbing to wing, more vertical an unnatural and very awkward feeling. stab support, substituted weak stab with unit from Cunningham "Eindecker". How do you avoid getting into this kind of situation? Simple! That BIG Bird quick to explain that if you use the same that could fly???? of yours should not leave the workshop (or very similar .. . which is okay, too) Obviously the common sense ap­ until she’s absolutely ready to fly; she engine and radio used on the prototype, proach is to treat the cause and not the should be balanced laterally, as well as your balance point will come out as effect; in other words, don’t wait until fore and aft . . . and all incidence and indicated on the plans. I still can’t the bird is all finished before you get thrust angles should be checked, also. believe that I’ve heard these pearls of involved with balancing and trimming. Quite frankly, you’re a damn fool if you wisdom from guys who should know By planning ahead, you can guarantee don’t take the time to make these checks better. yourself peace of mind that comes from on every aircraft, because there's no And then they top it all off by trying to knowing where that balance point is other way to insure that your new bird do a balancing act out at the field. With going to be . . . instead of waiting too meets the basic requirements and is the help of another lame-brain, they long and then ending up grumping and ready for her first flight. stick greasy thumbs under some very swearing in despair as you try to find a (Any modeler with a free flight back­ arbitrary points at the wingtips, lift the place up front to stow those pounds of ground knows you simply DON’T fly a craft off the ground, and declare her to lead. Of course, this is assuming your model until it is checked for balance and be "pretty well in trim.’’ Gad, who’s tail-heavy BIG Bird survives that wild and trim, wen) trying to fool who? Even if it were dead wooley first flig h t... We take too much for granted and calm, that procedure is near worthless Okay gang, I know what a lot of you some of us carry it to extremes; there .. . but with any amount of wind present are probably thinking right now, which seems to be a common misbelief that (and there usually is), you’re setting up is the same thing I’ve had thrown at me you not only don’t have to worry about that young and tender bird for a very countless times before: “ Hey, this is incidence and thrust angles if you’re early grave. supposed to be a hobby, and supposed building from a kit, but that you're in Of course these same folks become to be fun .. .so keep your math and your even better shape if you scratch build, proficient at only one thing; dorking formulas to yourself. Just let me enjoy because the parts will be cut much more airplanes. And what little flying they do flying my airplanes..." accurately. And if you think that’s get is nothing to write home about Face it guys, in our hobby, ignorance ridiculous, how about this; many of because their birds are really dogs in is not bliss because the potential for these same modelers extend this crazy disguise .. . and other than Snoopy, reasoning to include balancing, and are when was the last time you saw a dog Continued from page 83

Two sides of BIG Bird’s author. Al Alman . . . one, the burly brute with his 28 pound Puma, powered by a Super Hustler, and one, the insecure little fellow with his two-year old son's stuffed doggie and his trusty transmitter.

AUGUST 1982 15 such a range fuel, you must use anhy­ drous (water free) iso-propyl. It’s avail­ able from chemical supply houses. Ask for reagent grade iso-propyl. To save you some experimentation with various blends, here’s one that I found to be FUEL LINES pretty good: 10% nitro, 45% methanol, JOE KLAUSE 25% iso-propyl, and 20% lubricant. P.O. Bo* 2699 Another additive or ingredient is Lagun· Hills, CA 92653 Xylene. That’s a common paint thinner that you can purchase from full service QUESTIONS AND ANSWERS shudder, you might consider 1/2A fly­ paint stores. Nevertheless, I’d recom­ About two weeks ago at the Toledo ing. Certainly the engines are consider­ mend using a pure grade from a chemical Trade Show, April 1-3, more than a few ably less expensive .. . even those that supplier. Here’s a good formula for modelers offered some nice comments have been customized. Wait a minute, starters: 30% nitro, 30% xylene, 20% about this column. Some of them had it’s not fair or objective to compare methanol and 20% lubricant. questions and suggestions for future quarter-scale engines with 1/2A. Or is it? At this point, I have one precaution topics. In addition to thanks and re­ Let’s put it this way, big is more expen­ and another bit of information. The pre­ sponses, I usually added, "Heck, just sive . .. even with gasoline four-cycle caution first: if you use the above write anytime.” Sometimes, their reac­ engines. But, you can’t deny there’s ingredients, be forewarned. Like gaso­ tion seemed to be to the effect that they merit to their realism. Smaller engines, line, they are highly flammable! Many a felt magazines probably wouldn’t an­ in say the .25 cubic inch displacement or flooded engine has ended up in an in­ swer. Guys, let me assure all of you, if you below, are comparatively inexpensive, cinerated model. Many arm hairs have write, I’ll gladly respond. (When you and even if you use a lot of nitro, the cost been singed, and burns are not uncom­ write to Joe, it would be kinda nice if you per flying minute will be significantly mon. Be careful! The other bit of infor­ include a self-addressed stamped enve­ less. The question then becomes, "Is mation is that trying such a home brew lope if you want an answer. Overseas realism only possible with huge model doesn’t guarantee success. These fuels readers can include a couple of inter­ aircraft?” I don’t think so. If nothing are particularly sensitive to compression national mail response coupons, wen) else, indoor and outdoor"Gumbanders” ratios and glow plugs. You’ll have to To all those with whom I spoke at have proven that. I really admire those experiment with head spacing,chamber Toledo, thank you for your gracious guys. I may be inviting a lot of criticism, volume, and glow plug heat ranges to words. I’ll try to continue to provide an but I don’t believe it’s stretching a point realize the best results. Usually you’ll informative and not-too-dry column. to consider them as modeling purists. have to use higher compression ratios What has all this proven? I’m really not than normal, together with hot type HOW ABOUT A NEW ENGINE? certain, but my point is that you should glow plugs. As always, those who work at If large model aircraft are your thing, pursue your particular interests.. .short it usually are the top few finishers. you'll probably need quite a bit of of perhaps a divorce. Still on the subject of fuel, here's some power. In that case you might be inter­ What about other econo measures? information in response to inquiries ested in a new engine being offered by Perhaps your event allows you to "play” about Klotz lubricants. Klotz KL-100 is a the Rossi brothers of Brescia, Italy. Take with fuel ingredients. Want more lapsor two-cycle racing oil. It is my understand- a look at the photograph. Interested? air time? You won’t get it with nitro, but ing that this lubricant contains 25% Well, that’s two .80 engines bolted to a there are other liquids that will do castor oil. Klotz KL-200 and KL-300 do special mount, and hooked together better, and they’re not banned by AMA not contain castor oil. Some readers may with a twin "V ” belt drive. A rather neat rules. recall that I’ve mentioned previously package. I only had the opportunity to A few years ago I became involved in that I use KL-100. Yes, it’s a fine lubricant. cursorily examine the engine, but I can flying events with specified tank capac­ Others may be as good or better, but I tell you something in general. Briefly, ity. I soon became aware of fuels such as have no complaints about KL-100. You’ll two .80’s are actually in hefty .61 cases. the British 25% formula. Specifically, have to look closely to know which Klotz Sound impossible? Not really, if you'll 25% nitro,25%methanol,25%anhydrous oil you see on the shelf. Look at the back recall that the Rossi .60, .61 and .65’s all iso-propyl alcohol and 25% lubricant. of the can, at the bottom,and you’ll see use the same sleeve and piston. Only the Iso-propyl alcohol is commonly known in lettering about 3/64 of an inch in stroke is changed from one to another, as rubbing alcohol, but be forewarned: height, the identification KL-100, 200 or and that merely means adjusting crank- don't buy the common drug store 300. pin location. In this instance, the bore variety. It’s about 15% water, and won't For the future, I have three other new, probably was also modified. The reduc­ burn very well at all. If you want to try tion ratio is 1 to .56, or vice-versa Continued on page 80 depending upon your viewpoint. Let’s put it this way, for every 1000 engine RPM the prop shaft will rotate 560 RPM . . . hopefully. Reportedly, the prop idle RPM is very, very low. Wish I had had a chance to run it. When and where can you get it? Well, in the early Fall, Condor Hobbies expects to receive the first shipment. The price will probably be close to $600. For more information, write to Condor at 17835 Sky Park Circle, Suite F, Irvine, CA 92714, or call them at (714) 556-1888. You might also be inter­ ested to know that the prop drive unit will be available separately. It is suitable for .60 to .90 size engines. The guessti­ mate on the price of the prop drive unit at this writing is $200.

ECONO FLIGHT OPS Two Rossi 80's bolted together and linked to a 1 to .56 reduction belt drive. Check with If the above prices leave you with a Condor Hobbies for future availability.

16 MODEL BUILDER i t e m ? m o n «

By AL HOLMES . .. Instead of OLD TIMER of the Month, this is "OLD TIMER of the Century ! Joe Raspante's classic Beauty Winner has been the center of some controversy as to her parentage. This article and the accompanying plans, should straighten it all out.

ability was also an important factor. Its beauty has remained timeless, and down through theyears,it has been considered by many modelers as something very special, something revered, something with a mystique and aloofness, mostly because it could not be duplicated ... no plans, no kit. Beginning with the April '82 issue of MB, Bill Effinger’s W.f. Technical Ser­ vices advertised the Snow White “ 20” , stating that it was a 3/4-size version of Joe Raspante's model, as designed by Joe Raspante at the console of his ham TV Bill Effinger. Model Builder also pub­ Joe looking at a set of Snow White plans for station. lished a photo of the original Snow the first time in 45 years. White in the March ’82 R/C W orld INTRODUCTION BY THE EDITOR column, in which the caption, supplied plans. This article has been in the works for by Bill Effinger, "clarified” the fact that However, along comes the June '82 quite a while. In fact, Al Holmes has Snow White was his design. issue of Model Aviation, with a story on worked on the plans over a period of Meanwhile, discussion with Al Snow White which adds more confusion five years. Until recently, there didn't Holmes, who was in the process of to the situation, particularly the three- seem to be any controversy involved . . . finishing up the labor of love published view which is supposed to be a 3/4-size Snow White was simply a very beautiful herein, indicated that he believed S/W version of the original model. This lit a gas model, designed and built by Joe was Joe's design! We asked Al to get with fire under Al and MB’s editor, to get the Raspante in 1937-1938, which went on to Joe and try to clear up the confusion real Snow White published as soon as win many beauty contests, where flying before we published the Snow White possible. With that introduction, we

Al Holmes using a razor saw to remove a wing Using thinner to remove spar pieces from rib. Sanding rib smooth before tracing. There rib. Each one done the same way. Cap strips removed with model knife. were no short cuts to this job!

AUGUST 1982 17 18 FULL SIZE PLANS AVAILABLE - SEE PAGE 100 MODEL BUILDER SIZE PLANS AVAILABLE - SEE PAGE 100 FULL AUGUST 1982 After removing half of stab, rudder could be laid down flat to trace Using thinner to remove planking from top of wing. Note truss outline. Everything was traced directly from model parts. bracing between ribs, a typical method of the time. now turn the podium over to Al Holmes. Consider this, only one Snow White has out a pencil and on a slip of scrap paper • · · ever been built, that was 45 years ago. Its sketched the outline of a likely model. “ MIRROR, MIRROR ON THE WALL . . . contest record was nothing short of Joe took the sketch home after closing WHO’S THE FAIREST OF THEM ALL?" astonishing. In every contest the Snow the shop that night. Over the course of “ SNOW WHITE” ! White has entered, it won! This includes the next two or three weeks, Joe engi­ Yes, SNOW WHITE is alive and well on the prestigious Berryloid competition at neered, refined and gave birth to Snow Long Island! the 1939 Nats. White on the backs of old, flattened out, To my knowledge (and I’ve been Today, the Snow White is in the center brown paper bags. Joe said, “ Indeed, I building models for more than 40years), of a controversy. That is; who truly give Bill Effinger credit for the idea, the there has never been a model to attract designed her? At this point I won’t try to inspiration, that gave me Snow White, so much attention with so little exposure. sway you in any direction, or bless you but in NO WAY did he ever contribute with the pearls of my conclusions. to the actual design of the Snow White!" Rather, I will list what I have found out Now that I have everyone's hackles up about Snow White over the past five and divided into two camps, let’s define years (that's how long I’ve been working “ DESIGN". on the plans). Keep in mind how difficult DESIGN: used as a basis for anticipa­ it is to uncover a 45 year old truth. ting practical problems and solving THE BEGINNING them at the engineering stage. Early 1937, in Joe Raspante’s radio DESIGNER: onewhoplans,produces, repair shop, on Atlantic Avenue in or creates utilitarian or aesthetic objects. Brooklyn, New York, Joe sat racking his (Ref. Webster’s Third International Dic­ very inventive brain for some inspiration tionary) for a new airplane; one with a new look I would say, if this is what “ DESIGN” about it, classic, graceful, and large. In means, then Joe is indeed the "DE­ walks a friend and member of the same SIGNER” . model club (Majestic Gas Model Club), Now if you haven’t guessed already, I Bill Effinger (Bill was the moving force firmly believe, that without a doubt, behind Berkeley Models). Joseph M. Raspante is the one and only As Joe recalls, it went something like designer of the famous SNOW WHITE! this: Joe said, “ I’ve been sitting here This is not intended to shoot anyone trying to come up with something new down, least of all a man who has made to enter in next year's Beauty Contests. I the kind of contribution to model Joe Raspante with his hand made four- want something big, like Ben Shershaw’s cylinder marine engine. Yes. it runs. ‘Cavalier’. What do you think?” Bill took Con tinuecl on page 98

Nearly completed Show White in front of Joe's radio repair shop in All that remains of Show White after Al resurrected its construction Brooklyn, N. Y. The original of this photo is dated March 1938. on the drawings shown with this article. Now you can build her!

20 MODEL BUILDER AUGUST 1982 FULL SIZE PLANS AV AILABLE - SEE PAGE 100 21 fU taba

PRODUCTS IN USE

The FUTABA "G " SERIES

By ELOY MAREZ

The complete system, as you receive it in its foam bed, including charger, servo trays, manual, battery, switch harness .. . everything but the co-pilot! • Something for everyone, could well for the one with exponential. Substitute reverse. They are available with your be the motto of the Futaba Radio Corpo­ a 5 for the 7 for the five-channel system, choice of a number of servos, including ration, whose latest descriptive brochure similarly 6 for the six-channel. The "G ” is the heavy-duty, watertight S-27 favored lists sixteen different R/C systems, and obviously intended to fill the gap, both by boaters. Unlike the 5 to 7 channel twenty-three different servos. Several price and feature-wise, between the aircraft systems, these two can be ob­ years ago, this could have been looked basic four or five-channel no-frills tained for dry cell operation if desired. at as merely being some type of a system, and the fully equipped competi­ Here and now, we are going to dissect marketing ploy, but is now indicative of tion types with all the bells and whistles. and discuss the 7-channel “ G” ; this one just how demanding and specialized our The "G ” Series does not have the is a /K model, dual rate equipped. requirements have become. Each of programmable flight features that will Apparently there is still some reluctance these different Futaba products is in­ fly a maneuver for you at the push of a on the part of some non-pattern flyers to tended for a specific purpose, with very button, but it does include all the late consider even a second look at a trans­ little overlap. refinements that can make everyday mitter with one or two extra switches on The line ranges from the “}" Series, flying more precise and pleasureable for it, with the belief that they are meant with all of the latest requirements for the non-pattern flyer. These include only to fly Curares! Not so .. . and we pattern competition flying, down to a dual rates or exponential, servo revers­ will attempt to give you a few more two-channel, plastic-cased transmitter ing, adjustable servo travel, rudder- details about each feature as we go system for the budget minded two- elevator or rudder-aileron mixing, ad­ along, and leave it up to you to decide if channel flyers and beginners. Included justable length sticks, and adjustable the sum total might not help smooth out in the line is the Futaba two-channel tension gimbals. If later desired, either your type of flying, and even installations wheel system, the 2F, which has been a the 5 or 6-channel systems can be factory a bit. standard for car and boat drivers. modified up to the full 7 channels. TRANSMITTER The latest entry, the “ G " Series, in the For the car and boat fan, the “ G” The “ G” Series transmitter is encased flyer’s configuration, is a two-stick Series includes two 3-channel systems. in plastic and metal, in that non-boxy version in five, six, and seven-channel The 2-stick FP-3EG, and wheel-equipped shape so familiar to Futaba transmitters. models. The official complete name is FP-3FG feature dual rate steering, throt­ It measures 7-3/4" wide, 6-1/8" wide, FP-7FG/K for the dual rate version, or /E tle and mixture fine tuning, and servo and 2" thick; weighs 2 lbs., 5 oz. It is

The "G " Series Futaba transmitter, in brushed gold and black, is a The beauty is not just skin deep! Switching and rate controls lo­ very purposeful piece of good looking equipment. cated just above battery. Everything well organized. It has to be!

22 MODEL BUILDER finished in brushed bronze and black, looks quite attractive! The open gimbals are smooth working and accurate, and feature rapid, no-tool, stick length adjustments and internal, screwdriver- set, spring tension. All trims and propor­ tional auxiliary channels are ratcheted. Trims are normally located adjacent to the control sticks; cross trims are not available. A dual scale meter is used to indicate relative power output, and battery voltage simultaneously. The latter is an indirect reading, since the actual power out is a product of battery voltage, the needle crossed from the All of the auxiliary function switches are located on the top, within easy reach, also having green down into the red portion of the different levers so you ca n get to recognize them by feel, no need to look down. scale at just under nine volts, or as the battery approached it’s 1.1 volt per cell For those who have not yet experi­ critical point. enced either one of these refinements, a The antenna is detachable; there is a short explanation follows. Dual rate is a pocket in the base of the transmitter into method of reducing the total servo which it can be inserted for transporting travel at the throw of a switch, the and safekeeping. reduced amount being adjustable to Now for all those switches! All models your needs. The advantage is that since it of the airplane “ G” Series (all references then takes more stick movement to will be to those only, not the 3-channels), obtain a certain airplane effect, have a two-way mixer, for which a three- smoother manuevers can be made with way switch is located on top. It selects fewer jerky motions and overcontrol. A mixers off, or an aileron-to-rudder disadvantage can come when the switch mixing which should be especially is forgotten in the low rate position and a interesting to those flying larger models manuever requiring full control move­ EXPONENTIAL COMPARISON CHART on which this type of mixing is almost a ment is attempted. necessity for realistic flying. In this action of both of these features. I position, the aileron control affects the personally think that these are the rudder, to a degree and direction ad­ greatest improvements in transmitter justable through the removable back functions to come along in years, even panel, but the rudder can be used more so than servo reversing. independently, without switching back, for ground steering or those in-flight manuevers requiring rudder only. Also known as C.A.R. In the other position of the mixer switch, you will get rudder and elevator mixing at a ratio of one-to-one. This is the type of mixing normally used for V- tails and elevons, using two servos, one for each direction of roll. In this config­ uration, rudder can be used indepen­ dently without switching; the elevator control affects both channels. D U A L R A T E These electronic mixers are simply great . . . no more need for those slop Exponential control issomewhat and friction-producing sliding servos similar to dual rate, in that it also results BI-DIRECTIONAL ADJUSTMENT and complicated mechanical linkages. in a reduction of servo to stick move­ Servo reversing at the throw of a ment around stick center. However, as The “ ATV” , Adjustable Travel Volume switch is standard on all of the channels, the stick is moved further off center, the feature is simply another way of saying not only on the main flight channels as ratio increases until at the end of stick that the total servo versus stick travel is often seen, as a standard feature. So is travel, normal full servo travel is ob­ adjustable; independently on each side. what Futaba refers to as “ ATV’’; Adjust­ tained. We’ve included a couple of little able Travel Volume, which permits sketches which should help to clarify the Con tinued on page 64 independent servo travel adjustment on either side. There is also an "ATL” ; Adjustable Throttle Limiter, on the throttle channel, a trim function which works only on the low end, so that you can adjust the idle or cut-off without upsetting the top end setting. Other than mode, frequency, and number of channels, the only other decision you will have to make when ordering your "G ” Series is to pick between dual rate and exponential, which come on elevator and ailerons on the five and six-channel systems, plus rudder on the seven. Either one or all can be switched in and out at the flyer’s The airborne components, with a common 9-volt transistor battery for size comparison. Their option. compact size is suitable for all but the smallest planes.

AUGUST 1982 23 much to be explained by "I didn't know” . We all know that this has been going on, and little can be done about controlling such misuse at non-sanc- tioned events, but according to the program, there exists a body called ORRCA (Off-Road R/C Association), and of course, ROAR, the officials of which must be aware of the rules. In addition, many of the names mentioned in key positions and in competition are well known pioneers in the R/C car hobby . . . they know the proper fre­ quencies. In the list of competitors, right by their illegal frequencies, are names long associated with R/C cars, and with the industry. I find this shocking .. . There are two areas of heavy R/C airplane activity in the vicinity, one about three and a half The C&D Twinn Driver, a completely self-contained glow plug power source for two cylinder miles away from where this event took engines. Can also be used singly. Classic Ross twin shown. place. Whether or not these R/C’ers believe it, our signals can carry that far. When the risks involve 10-pound, 100 MPH airplanes, deliberate operation on aircraft frequencies is completely irre­ Electronics Comer sponsible. And I find it so, not only on By ELOY MAREZ the part of the competitors, but more so on the part of the race officials and R/C organizations concerned, who by con­ doning that are also lending their approval. There is no excuse, however, in all THERE IS GOOD NEWS, AND licensed stations on 72 MHz, but the fairness, we will be happy to give equal, THERE IS BAD NEWS . . . misuse of our own frequencies by or more space to the other viewpoint, if The good news, frequency-wise, is knowledgeable R/C’ers is beyond my one exists. We sincerely hope that the that things are proceeding according to understanding. industry organizations who co-spon­ the expected schedule in regard to our I am reading from a program printed sored this event will reconsider or new R/C frequencies. The Federal Com­ by a publication entitled R/C Racing impose some restrictions the next time munications Commission has released News, included as part of its March 30, they are invited to do so for a similar its so-called NPRM (Notice of Proposed 1982 edition. This program includes a list non-aircraft event. After all, some of Rule Making) covering AMA's petition, of events, drivers, and frequencies for them are suppliers of aircraft radios and now officially known as RM-3248. The the "1982 R/C Off Road World Cham­ accessories as well, and owe us airplane next step is that those for and against file pionships" which took place in drivers a certain amount of considera­ their "for's" and "against’s” , after which Anaheim, California, April 16 through tion. the Commission makes its ruling for the 18,1982. It was sponsored by said publi­ THE SPEED CONTROL, O.M.T. benefit of the largest number of we cation, as well co-sponsored by 26 We heard from Mr. W. Schweizer, of citizens. By the time you are reading this, industry companies. Held in conjunc­ Pomona, New York, who tells us about all the actions and answers will have tion with a full-scale off road trade and his experiences with the Speed Control taken place, and the ball will be back in consumer show, I’m sure this event from our February issue. It seems he ran Washington’s court. No serious opposi­ brought a lot of exposure of the R/C into a batch of defective triacs, which tion is expected, nor is any delay seen, hobby to the general public. Too bad it ultimately cost him a pot also. He is only the normal amount of time neces­ could not have been done completely finally off and running, but has a further sary forsuch actions. Ifa llgoesaccording under the law! query: to expectations, this good news will only The appalling and unforgivable thing "The question I would like answered get better... to me is that tw enty percent, by count, of Mr. Marez, is as follows: When the pot is The bad news also has to do with fre­ the competitors were, according to the on "0", switch on and a Dřeme! plugged quencies, and the comfort of being able published schedule, operating, and in, I get no RPM. But I have to turn the to operate our R/C vehicles with the permitted by the race management to pot half way up before the unit will greatest possible security. It is one thing do so, on illegal frequencies . . . those begin to run. I cannot get the Dremel to have to contend with illegal CB’ers on assigned for "model aircraft use only” . drill below 700 RPM. Is this normal and 27 MHz, and non-R/C though properly Twenty percent . .. now that is too the way the speed control is supposed to work, or did I do something wrong? No matter what I plug into the unit, drill, drop light, fan, blender, etc., / have to \2______turn the pot up to about 6 before any of .1 350T 3 the units work and they all seem to start VOLTAGE off at half power. The speed control 12 V. *· REGULATOR does not lower RPM to zero or say 700 INPUT 50 K « 1.2K 9.6 V. OUTPUT RPM. Can you please advise me on this. I _____ 1 installed all the parts from your parts list." Well, Mr. W., there is a simple solu­ tion. Use a smaller value pot; one of about half the resistance will probably Voltage regulator circuit to provide 9.6-volt transmitter power from 12-volt battery. Adjust pot work for what you are attempting to do. for proper output. My choice of the value originally used

24 MODEL BUILDER was governed by two facts, though I gets its power from the receiver battery, knew it may be a little high for some without need of any special packs or applications. For one thing, there is no connections. way of knowing just what it may be used I have not tried it, but I do know the for. For example, I learned recently that theory, and have used similar IC’s for the circuit has been used to replace the other applications where it is necessary Variacs, a type of variable voltage trans­ to clean up a servo pulse . . . the system former, in plastic injection machinery in works. It is certainly worth a try, and to a plant up around Chicago. The pot used test the validity of such a device, you is a compromise that will work in most should test the antenna-less or antenna- applications. The second reason for its down range, with the engine running, choice is that I was trying to build with and without it. If your extraneous around components that are readily RF noise is being generated within your available, which means Radio Shack. model or picked up by long servo leads, Unfortunately, they do not catalog one and the range increases with the "Noise that will give the results you are after, Trap” installed . . . it is helping, leave it you'll have to locate one from a more in. This goodie from Ace R/C is No. widely stocked electronic supplier. 26K17; priced at $3.95. On the matter of real slow speeds, If you don't like to roll your own, you there is a minimum that is governed will find similar items available, ready more by the device in use than by the built, from EMS, Electronic Model Sys­ control, as there has to be enough tems, also introduced this year. power applied to it to overcome friction NI-CDS, AND FAST CHARGERS and armature inertia plus just enough Mr. Philip Bruce Mahony, of Lime more to maintain a very low speed. This Rock, Connecticut, has been heard type of control is too critical for a simple from. He has recently been ‘willed’ an circuit such as the one we’ve used, electric Kraft Cardinal, and an Astro .020 which however, does result in good Twin, and is asking for information on control over the practical ranges re­ the charging of Ni-Cd batteries. quired. Phil, there has been more information, AND RF NOISE, O.M.T. and misinformation published on this I have seme further information for one single subject than probably any Mr. Charles Castaing, New Iberia, Loui­ other since Medco sold Bob Dunham his siana, and Mr. J. Onderka, Judibana, first set of button cells. We will try not to Venezuela (June '82 issue), who wrote add to the latter. Robart Super Trim Arm provides exact throt­ tle arm m ovem ent, saves batteries. See te x t asking about the ill effects of RF noise in The nearest thing to a bible on the for more information the receiver, due to long leads, metal, subject that I know of is a book entitled etc. "Nickel-Cadmium Battery Application Though not quite as comprehensive, During the Toledo show this month, I Engineering Handbook” . It is published but then it was free when I last got one, is learned of a new product from Ace R/C by, and available from General Electric a leaflet entitled “ Rechargeable Nickel- that might help remove some of these Company, Battery Business Dept., P.O. Cadmium Batteries” available from gremlins. It is called a "Noise Trap” , and Box 861, Gainesville, FL 32602. I don't Gould, Inc., who incidentally is the only is described as "a solid state device know the current price, so you will have true maker of "NICAD" batteries, they (which) blocks all noise that is picked up to write direct, or call them at (904) have the name registered. Some charg­ in the servo leads and does not load the 462-3911. This 5-1/2 x 8-1/2, and 5/8 inch ing info is also included . . . you might receiver circuit” . It is a relatively simple thick book covers Ni-Cds in more detail write for one, to Gould Inc., 931 N. circuit, consisting of one 1C, a small than anything else I have seen to date, Vandalia, St. Paul, MN 55114. printed circuit board, and the necessary including their makeup, application, What Phil is trying to do is to get the wiring. You will need some plugs, male and yes, the various methods by which and female, to match your R/C system. It they may be charged. Continued on page 96

TO TRANSMITTER TO TRANSMITTER ELECTRONICS ELECTRONICS +

4PDT SWITCH DPST SWITCH

— I + TO EXTERNAL BATTERY TO EXTERNAL BATTERY +

INTERNAL TO CHARGER CHARGER BATTERY INTERNAL BATTERY

Two common transmitter switching circuits, and connection points for external battery supply.

AUGUST 1982 25 Photo A. Note "direct drive" aileron servos. Eliminates weight of linkages, wing weakening Photo B. Foam block covers receiver in foam servo hole in center of wing. pocket shown in Photo E.

• For the last few years we've been a apparently are being used as examples low speeds as well as high speeds plus strong proponent of the lightweight of what is required for this type of flying. accelerate and decelerate quickly. It's pattern plane. Everyone has his own The points which really cause concern possible, and our experience shows that ideas on what an ideal weight is, but here are size, complexity, expense and you can build a perfectly conventional consider the evolution of the present new building techniques. But one thing pattern design of foam, balsa, epoxy designs. we have going for us now is a choice of glass, using retracts, pipe, etc. at 800 sq. Originally we had the large Astro Hog very strong A.B.C. .60 engines which inches for 8 lbs. to 9 lbs. with no tricks, type designs which were lightweight deliver tremendous power with little i.e., lightening holes etc. Attention to and had small engines. These faded from attendant tinkering. By adjusting pipe detail is the key to getting the weight off. popularity as the smaller, heavier loaded length and playing with propellors, Here’s how. designs with more horsepower devel­ many of these engines will pull large First, lay out all the hardware you plan oped. This type has been popular for the propellors very well indeed. on using and determine what pieces are last ten years. The basic shape of the current pattern really necessary .. . it’s possible to find One of the most significant factors birds has been worked out to offer good that choosing a lighter component contributing to design change has been flight performance, so the only missing results in being able to use lighter engine development. Our present en­ link is arriving at a weight which will mounting or structures. This is double gines deliver twice the pulling power of permit a wider speed envelope . . . that the early .45-.60 designs which ruled the is, allow the model to perform well at Continued on page 95 skies in the '60s. We all found that smoothness could be gained by high speed, which produced the popular maneuvers like the long rolls, large loops, etc. But, like it or not, space for the 3/4- mile long maneuver is becoming scarce, even here in the boundless reaches of the U.S.A. It looks like we’re back to the large, lightly loaded pattern designs which fly at low speeds. Not a very attractive thought for a lot of pattern enthusiasts. Also, the big Tournament of Champions models which are designed Photo E. Lightweight fishing line in tubes for nose gear steering . . . much lighter than wire. specifically for the "close in” pattern,

Photo Co. Normal landing gear position. Compare w ith wing in Photo D. Monokote saved weight of 8 ounces compared to painted Photo A. version.

26 MODEL BUILDER Beautiful two-inch scale Beach Staggerwing by Roger Stern, Harare, Zimbabwe (formerly called Salisbury, Rhodesia). Working retracts, flaps (obviously), 60 power. Possible future construction article. Remember his big Liberty Sport?

it is high time that judging be as origi­ nally conceived in Sport Scale. This would separate Sport Scale from AMA scale as it was intended. If this could be done we could get back to Sport Scale as it should be . . . a competition for the many. It would also benefit AMA Scale in the long run. Much has been written about this and for some lime. I hope you find it possible to print this letter in your column, be­ • By the time you reach age 50, you have " former" Sport Scale Enthusiast. cause with the photo published last, it learned (hopefully) that it’s not hard to Dear Bob, might reopen a can of beans that has too say or do something that upsets some­ Sorry I didn't know about your pub­ long needed to be reopened. Sincerely, body’s apple cart. If you’re lucky (or lishing a photo of my Fairchild FC-2 George Clapp really work at it), you don’t spill loo when we met in Toledo. Would like to I have tried to steer a center course on many apples along the way. What’s hard have talked to you about Sport Scale vs. this subject. Over the several years to control is when someone else spills Precision Scale at the time. writing this column, I have shared some them for you. In the May issue, this I have long objected to details not of my thoughts at various times. First, I column carried a photo of George seen at the prescribed distance on a feel that it is impossible to legislate Clapp’s very nice Fairchild FC-2. The Sport Scale model. mediocrity. Everytime you try, you’ll caption which ran below it alluded to My Fokker trimotor "America" on find someone able to produce a better the continuing controversy of Sport Model Builder cover 76 and shown mousetrap, somehow or other. To elimi­ Scale — Precision modeling. At the risk flying in " Those Marvelous Miniatures" nate the problem of detail, etc., you’d of spearing my boss, the comments in is a true Sport Scale model aircraft. It is have to place the model many times the the caption were not mine, but rather now the property of the AMA for the distance away from what we presently the management’s. (Right. WCN is forthcoming model museum. There are use. This would certainly produce some reponsible for all captions! wen) As a no details that can sway a judge other leveling of scores in static and would result of the caption, I received mail. than at the distance quoted in the AMA come closest to “ legislating mediocrity.” Two of those letters are included. rule book. But I soon found that the But what you would produce at that Dear Mr. Underwood, dummy " Whirlwinds" which were only point is not so much a scale event as a I noted in your May column the dowel cylinders without the fins and flying event. There are a number of photograph of George Clapp’s Fairchild other long distance details, weren’t in people who feel strongly that way and I FC-2 and the accompanying caption. I competition with other so-called Sport can understand their feelings. Person­ assume from the caption that you are Scale models. ally, I prefer to try and keep it a " scale expressing your disapproval of the It is hard to build a model as large as flying” event with an even split. The entrance of this "alleged” A.M.A. Scale my Fairchild and with an exposed radial majority of contests I’ve attended in class model into a Sport Scale class. As it engine without using the Williams Bros, recent years have made a genuine effort appears that almost everyone is doing it cylinders. There are other details such as to keep most everyone in the competi­ these days, including maybe one or two the fuel tanks on top of the wings that tion. They have done this by keeping the scale columnists, is it not a little hit like are clearly visible from Sport Scale point spread in a reasonable range; the pot calling the kettle black? distance. The doors don’t open, the something in the order of a ten-point What is your solution to this problem? wings do not fold, there is no inside max. Seasoned contesters will argue that Is it even a problem? PerhapstheA.M.A., detail that couldn’t be seen at the a ten-point spread is impossible to make the C.D.s, the scale judges, the trade prescribed distance. The point being, up with flying. Looking back over the shows, the Nats, and the builders should there is only enough detail to be com­ very accurate records that my wife keeps stop kidding themselves and call a spade petitive today in Sport Scale. of the competitions we've been involved a spade?!? Or, shall we invent more scale I have judged Ralph jackson’s Win- in, I find I would not completely agree classes to lure the "beginner"? Would decker when it was in the Precision with this. There are, of course, those they too "grow" as the Sport Scale class category. Since then he has had to down obvious judging necessities when you did? grade it to even be competitive in Sport have to zap an extremely poorly done Perhaps it is high time to rethink scale Scale. competition. Sincerely, Cary E. Brown, A In my opinion and many, many others Continued on page 75

AUGUST 1982 27 ELECTRIC POWERi By MITCH POLING

• At last! Some decent flying weather Second flight: charged to a voltage is that the Sanyos can handle the higher (this is written in late April). So, hot from peak of 10.00, flight time nine min., charge rate quite well, provided that you the field, here are the results of using the 0 sec. keep an eye on them and do not over­ Leisure 05 pattern wind in the Kraft Third day: Leisure system in the Astro charge them. My procedure is to touch Cardinal (with landing gear removed); Sport, flying weight 32 oz., overcast, them occasionally to make sure they are 6x4 Cox gray Prop, flying weight 37-1/2 about 50°, winds 10 mph. not getting hot, and when the voltage oz. First flight: charged to voltage peak of stops rising, I turn off the charge. Note, I First day: Cloudy, temperatures in the 10.10 volts, flight time 10 min., 40 sec. did not say to wait until the voltage starts 50’s, light wind. Battery pack: Sanyo 1 also did the same for the Leisure to drop. Don’t! This probably would six-cell sub-C. system with six G.E. sub-C cells, and the cause damage occasionally. This is all First flight: charged at 4 amps for 15 times were consistently about a minute easy to see on a digital voltmeter, the minutes, flight time eight min., 15 sec. less than with the Sanyo pack. The voltage shows a steady climb until just at Second flight: charged to a peak difference in power was significant; my the end, where it hesitates, stays the voltage of 10.02 volts, flight time eight guesstimate was that the Sanyo pack same, or oscillates up and down for a min., 30 sec. delivered about 15% more power. Now minute or so, then may begin to drop. Second day: gusty, winds 10 mph, that I have tried both, it is going to be The hesitation or oscillation is easy to clear, about 60° temp. hard to go back to G.E.! It was like flying see, and that is when I stop the charge. First flight: charged to peak of 10.16 with nitro versus no nitro (for those with Anyhow, the bottom line on all this is volts, flight time seven min., 15 sec. gas experience), and I really enjoyed the that flight times of eight to 10 minutes extra edee in power. You will probably notice that the first flights are shorter; this is always true, as the batteries need to warm up for their maximum performance. “ Body tem­ perature" seems to be about right for the best from NiCds, both in power and duration. You will also most likely notice that the voltage peak is not the same for each charge. This seems to be a function of temperature, as the battery pack warms up, the voltage peak gets lower. I have read and heard many times that the Sanyo cells are more sensitive to overcharge than the G.E. cells, so it is often recommended that the charge rate should be at 2 amperes, rather than the 4 amperes that G.E.’s are charged with. This means over 20 minutes charge time. I am not that patient, and I have been charging the Sanyos at 4 to 4-1/2 amperes, which gets them up to the eak voltage in 15 minutes. With two attery packs (which I have), this gives nearly continuous flying all day. So far, Solar Scamp solar powered free flight by the Sanyos have thrived on this, with The Astro Challenger Cobalt 05, samarium Bill Morez. More in te xt absolutely no problem at all. My feeling cobalt magnets, HD brushes.

28 MODEL BUILDER Leisure 05 motor taped into Kratt Cardinal. The Kraft Cardinal with gear retracted (well, it looks that way!) and Leisure uo power. See text for test results. Note Hoerner tips.

Leisure 05 battery pack in bottom of Cardinal. Plenty of room. are not only practical, but routine, on done at this time. This is really impressive, Sanyo cells charged to their peak voltage. especially since it was the first flight of Furthermore, these include loops, rolls, the day and the battery was cold. The and climbs to out-of-sight altitude. lane was out of trim on top of that, I had These flight times do include two on-off ad floats on it, and the plane was Leisure 05 motor, LT 50, with the heavy periods, on each flight, because the trimmed for floats, with a shim under the duty brushes. plane was getting too high. These were leading edge of the wing. I took off the not glides, but power-off descents, so floats for this test, and found, after the overall time might include about a launch, that I had to use full down trim saw to cut out the hole in the back plate. minute of power-off time. A few months to keep the plane from nosing up. So, A 1/8 spruce piece with a screw in it ago I was getting six minutes as the over 10 minutes on a cold battery and serves to lock the motor in place. This fits routine time, but that was on G.E. cells out of trim! The flight included loops just right in the Astro Sport and does the and on a four-ampere charge for 15 and rolls, and four off periods to get the job quite well. The Leisure motor (LT 50) minutes, and was very conservative. plane back down to visual range. The is just a little oversize for the Cardinal Now that I've gone "Sanyo digital,” I Astro Sport is much more efficient than mount; I forced it in anyway, which don’t think I will go back! I owe thanks the Cardinal, and is the best sport 05 cracked the mount a little, but it works, to Leisure for advice on how to get plane I have ever flown. It’ll be interest­ crude, but good enough. The motor is better flight times, it all goes to show I’m ing to see how long it will fly on a secured in the Cardinal mount with duct not an "expert” yet! The Leisure motor, warmed up pack and in trim, maybe next tape. reviewed last month, has thoroughly month I can report on that. Bob Kopski wrote an announcement lived up to its promising bench tests, I There are no plans, as yet, for a motor for the Keystone R/C Club Electric Fly like it and recommend it as one of the mount for the Leisure 05, so the photos this fall, so here it is: September 18 and best on the market. show how I made one for the Astro 19 (two days!), starts at 9 am each day, at I have not had a chance to really find Sport. I rolled a 1-1/4 inch wide tube out the KRC flying field, Hatfield, Pennsyl­ out what the limits are with the Astro of file card stock around the motor vania. There is something for everybody, Sport and the Leisure 05; the one flight (three wraps is enough) using five- and it’s fun fly with awards for the best of 10 min., 40 sec. is all that I havegotten minute epoxy. This is then epoxied onto looking plane, the longest flight time, a 1/8 lite ply (Sig) back plate 2 inches the most aerobatic, and one surprise square. I used a 1-1/2 inch diameter hole event. There will also be seminars, displays, and an electric clinic for those who need help on their planes. Write Bob Stumpf, Snyder Road, K-15, Lans- dale, PA 19446. (phone 215/368-8583) or Bob Kopski, 25 West End Drive, Lansdale, PA 19446, if you need more information. The Electric Fly is in its third year, and the electric help clinic alone is well worth going to, not to mention all the rest. Bob does his own electric designs, V and his latest effort is a "something for everyone” plane, with three wing op­ tions for the same fuselage. All would be 8 inch chord; one a 64 inch turbulated glider wing, one a 40 inch flat bottom Homemade mount for Leisure 05 (see text). Leisure 05 in homemade mount. Leisure doesn't make one. Continued on page 78

AUGUST 1982 29 Herb Smith, Denver, Colorado, scratch-built this quarter-scale Super Cub (Quadra power) weighing 22 pounds to tow his also scratch-built quarter scale ASK-18 aloft. And remember, Denver is a mile above sea-level.

Trouble is, there’s always someone looking for loopholes in the rules. His Santa Barbara has a slight advantage be­ ä c cause of its lighter deck (and perhaps / SOARING heavier keel to increase stability while By Dr. LARRY FOGEL staying within the weight limit). And there are other ways to "cheat”. To make matters worse, over the years, the • R/C soaring and sailing are similar in define the acceptable ships. For ex­ class rules may change. Then there are many ways. Both are elegant sports. Yet, ample, Marblehead 50/800 races are grandfather clauses to allow the older there are distinct differences. For ex­ limited to boats no longer than fifty boats to compete. After a while the ample, in soaring, competitive events inches carrying no more than 800 square "one-design" has become a "some- are held among sailplanes of the same inches of sail. But to win such an event design." class with respect to size and controls. you've got to have a truly competitive Terry Allen, John Amen, and Roy The pilot with the better plane has a ship . . . and be a good skipper to boot. Langbord pondered this situation at last distinct advantage. You can’t expect to Each year the winning boat takes a new year’s National Championship."Perhaps win a two-meter contest simply because shape. If your hull isn’t of recent vintage, it’s time to establish a new class with your plane qualifies for that event. you’re outclassed even before the race rigorous rules so that skippers across the In sailing, the competition is clearly begins. Open class sailing is a combined land (and overseas) can compare their separated into open class and one- test of the designer/builder/skipper. sailing ability." Terry and John have now design events. In the former, rules Similarly, all of the recognized R/C sail­ come up with such a design. It’s the right plane competitions measure the de- compromise. It’s fast in light air, yet signer/builder/pilot. capable of sailing under heavy wind. It's In contrast, the one-design sailing big enough for smooth handling quality events focus only on the skipper’s skill. yet small enough for ease of transport Every boat in the event is of the same and storage. And it’s competitive in at design and construction. Once you least one of the recognized open classes. invest in such a boat, you’re in for many The result is the "Infinity-54” . . . a years of exciting competition. beautiful boat that’s 54 inches overall, Nowadays there are a number of carries 1,300 square inches of sail, active one-design classes. For example, weighs seventeen pounds and has a 10- the East Coast-12 consistently draws 3/4-inch maximum beam. The hull is competitors from all over the Eastern oblate, to allow it to plane downwind in United States, while the Santa Barbara is heavy air. The leading edge of the 51- popular on the West Coast . . . and I inch waterline cuts the waves. The 14- could cite other active classes. inch long keel with ten pounds of ballast

Herb Smith and his ASK-18, adapted from Radio controlled tow hook located in nose of glider. Line can also be released at "tug" end. Cliff Charlesworth's ASK-13 plans.

30 MODEL BUILDER On tow, the glider is already airborne, while the Cub appears to still The ASK-18 on final approach. Note the sod farm sprayer in action be on the ground. Beautiful sod farm! at far left. provides considerable stability. High are those who first reach the finish line. aspect sails are rigged on a carbon fiber Surely, there must be more imaginative mast with stainless steel fittings. A challenges. R/C sailplanes can enter shorter storm rig is available for racing duration tasks with precision required under the kind of conditions that rarely in landing, cross-country events, aero­ occur in San Diego. batic contests, and a wide variety of fun- This One-Design is governed by rules fly gambits. Perhaps sailing would gain a that would defy a Philadelphia lawyer; greater following if the events were (incidentally, Roy Langbord is a lawyer more diverse. Perhaps such events originally from Philadelphia). I've seen might challenge the designer to provide this boat in action. It looks great, new capabilities for the skipper. . . and handles well, and can compete success­ the skipper to acquire new skills. fully in the open 10-Rater class! For example, why not a slalom event? To get this class going, Terry and John The markers can take the form of dowels offer a complete kit including only top- held vertical by weights attached to one quality components. The white gel- end, held in position by a line stretched coated epoxy fiberglass hull is ready to between the weights. First, the line is receive the finished keel. All you have to stretched across the narrow end of the do is secure the deck to the hull, mount pond, then walked to a suitable position the mast and sails (dimples indicate where it is dropped in the water, the where to drill the holes), install the sail ends being staked. The rods are now control unit and the radio and you’re clearly visible protruding from the ready for a challenge . . . about ten to water. Super Cub tow bracket and release mech­ fifteen hours from package to pond. By The task is to maneuver through these anism. Herb has towed two gliders at once. the way, either Amen or Black sails without touching them and pernaps do come with this kit. Both are recognized this in minimum time. The difficulty of to be of top quality. To get more infor­ the challenge also depends upon the mation about this new one-design and orientation of the markers with respect I the kit, why not contact the Interim to the wind. The course can be sailed in Class Secretary, Roy Langbord, 302 West a single direction or in both directions, 77th Street, New York, New York 10024, up and down the slalom. The task could telephone (212) 362-4965. be made more stringent by decreasing Sailing is every bit as competitive as the spacing between the markers or by soaring, but somehow the sailors have allowing the markers to be spaced failed to diversify the events. From what closer and closer together toward one I’ve seen, a course is laid out; the boats end . . . the challenge being to go as far proceed through the entrance gate in an appropriate manner, and the winners Con tinued on page 73

Terry Allen (above), John Amen, and Roy Langbord are attempting to start a new One-Design class for R/C sailing. This "Infinity-54", with 1300 sq. in. sail area is their design. To promote the class, complete kits are being marketed. See text for details.

AUGUST 1982 31 se Ή II* ★ ★ ★ American R/C l ielicopters.lnc. PRODUCTS IN USE

AMERICAN R/C HELICOPTERS' SUPER MANTIS Part II by RAY HOSTETLER

• This month I’ll finish the American Never had you been able to get so R/C Helicopters Super Mantis review many features for such a reasonable that I started last month. If you are price. My only regret is that I have not contemplating the purchase of one of had the chance to fully flight-test the these ships,obtain last month’s issue and radio. I will let you know how the system follow along closely. performs in the air as soon as I have a Radio chance. However, if it is a reliable, I installed JR’s new Apollo 6-channel trouble free system and flies as good as it helicopter radio, known as system D6C- looks, I am sure that I will be very 4SHM, in the Super Mantis. This radio popular. The author making first test flights with his retails for $229.00 direct from Circus RADIO INSTALLATION Varient radio, prior to installing J.R. system. Hobbies, Las Vegas, Nevada. The radio gear is mounted on plywood Most of you are probably familiar with plates that form the front end and each side plate just below the upper JR’s Unlimited series radio with all the provide canopy attachment points. Like plate, using four small wood screws to bells and whistles you can think of. The I detailed last month, cut these pieces hold the plate to the rails. (See photo). new Apollo series retains the most out with care, and fuel proof them with This way it becomes easy to get to valuable functions, eliminating func­ paint. Your time doing this will be well everything else below. tions that the average sport flier rarely spent. The tail rotor servo mounts in the uses. The approximate cut out holes for middle of the right side plate. Again, The thing that I really liked about the servos are shown; these w ill vary double check hole size for the servo Apollo is what you DO get for $229.00 depending on which radio you install. before cutting. The side plates are .. .sixchannels, four servos (2NESL501's Make any necessary changes in hole size shown as solid 1/8-inch plywood. This and 2 NESL 502's [reversed]) delivering before you cut out the marked areas. gives a strong front end to say the least. 40 oz/in of torque, electronic mixing for The servos are mounted on two As I felt the 1/8-inch ply offered a the tail rotor (ATS system), throttle hold, “ decks,” cyclic servos above and servo reverse switches, plug in RF throttle/collective servo(s) below. The modules for TX and RX, adjustable stick plans show the upper deck glued in lengths, dual rates on roll and pitch, 5th place. If you do it this way it is difficult to channel for collective mixing, and the gain access to the lower deck. I strongly 6th channel for “ gear." suggest adding a 1/4-inch square rail to

Everything toothpicked in place prior to making linkages. Also a good time to use balancing Head after balancing. Note wheel collar procedure explained in recent columns. moved out on far flybar.

32 MODEL BUILDER Close-up of JR switch panel on transmitter, for reversing and ATS system.

Revolution and Heli-Baby canopies. SETUP Level the swashplate in all directions when the cyclic servos are neutral and JR Apollo 6-channel helicopter radio, neutral trim. The provided instructions marketed by Circus Hobbies. do a good job of getting the servos, swashplate, pitch input bellcrank, and good strong base, I cut openings in the tail rotor mix. Set your throttle at 1/2-5/8 side frames. This makes servo access carburetor opening with your trans­ easier and it gives open areas to route mitter at 1/2 stick, high trim. servo wires and the switch harness. This Stick toothpicks under the grey plastic A- s iX is purely optional, do whatever you like. head just above the flybar (There is a The bottom plate gives room for the little opening between the two). This collective servo. The plans show this will level the flybar. Then insert tooth­ servo driving throttle and collective. picks between the out bearing of the Since the radios I fly have provisions for axle holders (grey) and the black rec­ collective trim, I need one servo for tangular block where the bladeassembly throttle and one for collective. It is bolts to the head. This puts friction on Upper level servo board is made removable, nearly impossible to achieve this by the blades and they can be set to lift-off for easier access to other servos. mounting the servos side by side. The pitch. From experience I eyeballed the simple solution is to extend the lower blade angle. There is no pitch gage yoke horizontal and connect the col­ mounting plate 4-1/2 inches. Now two provided in the kit, and the instructions lective push rod. (Make sure the linkage servos easily mount in line; plus there is take you through linkage hook ups with under the plastic gear is centered enough room to wrap your receiver in no reference to blade pitch. Blade pitch between the gear and the cooling foam and lightly rubber band it to the will vary with altitude, but I think shroud). front of the plate. American should consider including a Cut, adjust and connect the pushrods The ball links provided are made by pitch gage in the kit. Most people are from the swashplate to the long end of Rocket City. These are very similar to the used to a gage from other kits, and it the mixer arms. Do not disturb the Kavan link except the ball is made of makes setup easy and accurate. mixers or blade pitch as previously set! aluminum instead of brass. They snap off Assuming that you had a pitch gage Then connect the short pushrods from and on nicely, but they are plenty stiff available, set the blades so the top of the the short end of the mixers up to the when new. I would recommend that you pitch gage is level with the flybar at 1/2 sides of the collective yoke. snap the links onto the balls, then lightly stick, high trim. The toothpicks you This will complete the hookups to the ‘‘work’1 the outside diameter of the inserted earlier will hold the blade angle head. I would strongly urge you to plastic link with a pliers. This squeezing that you set. Repeat for the other blade. balance the rotor head as I have process helps to “ break in’’ in the link Now eyeball both mixers level and described in recent Chopper Chatter and makes it much smoother to operate. insert a small wedge of balsawood to American furnishes long pushrods hold them level. Position the collective Continued on page 93 with a large threaded area on each end. This enables you to mount your particular brand of servo, then trim the rod to length. The only problems I encountered with the pushrods were the connections between theswashplate up to the mixers. There were no rods the correct length, threaded or not. I made my own from material on hand. To finish up the radio installation, mount the switch harness and charging jack to the back plate, preferably on the opposite side from the muffler. CANOPY The canopy mounts to the back plate in a nifty fashion. It is difficult to explain how the canopy mount works. . . Let me just say that it is very simple and gives excellent results. Much better than the The completed American R/C Helicopters Super Mantis at rest. Appealing to the advanced old "rubber band it on" routine of early sport flier, it's a lot of aircraft fo r very reasonable price.

AUGUST 1982 33

Rear of fuselage is tapered on bottom to give stabilizer its negative Kit wings have sweepback . . be sure to allow for this when cutting incidence. polyhedral breaks. takes a sanding block and about five critical.) from light piano wire. (A paper clip will minutes of concentrated patience, but it Now add the 7 inch Star Flyer prop and do in a pinch, or a large straight pin.) pays off: weight is deadly on these small hanger. If your new stick is too wide for Wrap it and glue it to the stick; running it models. the hanger, bevel the left side (looking through the entire fuselage weakens the Now you can cut a polyhedral break in from the rear) to give a bit of right thrust. wood. each wing panel, or not . . . just as you You may also want to bevel the bottom Make your first motor from 3/16 wish. I do it to stiffen the wing and fix the to reduce the hanger’s built-in down- rubber. How long should it be? Rule of camber, as much as for appearance. thrust . . . a low-powered ship like this thumb for rubber flying says 10% longer (Full-scale planes have dihedral, model doesn’t need much downthrust. than the distance between the motor planes have polyhedral. That's how you I like to glue my prop hangers per­ hooks. This is a good starting point. tell ’em apart.) manently in place, using Super Jet. This Optimum for each plane will vary ac­ Don’t be lazy and use the plastic wing allows me to cut away a large chunk of cording to the plane’s weight and trim. jo in e r. . . it weighs a ton. Glue the wing the bottom of the hanger in the vicinity Generally speaking, long rubbers give together in the center, instead. of the rubber hook. Reason: a tightly- long, soft runs; short rubbers give short The fuselage can be built from spruce wound motor often forms large knots bursts of higher energy. or balsa. If spruce, use 1/8 x 1/4 at the (called “ strawberries” ) that catch on the Tie your motor with a simple square most, and pick a straight piece. Balsa can hanger and stop the prop. Cutting away knot, and clip the ends short to save be 3/16 X 1/4 or 3/16 x 3/8. How long? At this area is the only cure. weight. Flying buddy Leon Joffe, of Rio least 16 inches. I’ve flown them to 24 A final bit of finesse; fill the gap in the Rancho, New Mexico, says to put a dab inches on the little Sleek Streek wing, rop hook with solder or Super Jet and of a rubber cement called "Goo” on the but you reach a point of diminishing aking soda. This means you have to slip knot before you lube it, to keep it from returns; too much fuselage, too much the rubber through the hook before coming loose. rubber, not enough lift... A bomb. tying the knot, but it solves the problem And you are going to lube the motor, I usually taper the rear half of the of a tight, lubed motor trying to climb aren’t you? Itwillonlydoubleyourflight fuselage a bit, to add lightness. But this is the wire and escape. time, and make your rubber last longer. a long and tedious razor cut; skip it if Next comes the rear rubber hook. It I’ve used castor oil, I’ve used a 50/50 mix you like. would seem ideal to put it at the very of glycerine and green soap (try your Glue the tailfeathers in place. If you rear of the fuselage stick, no? After all, druggist), and I've used Sig Rubber set the stab flat on the bottom of the the longer the rubber, the longer the Lube. Put a dab in one palm and rub the stick, then you’ll have to jack up the flight. But this usually isn’t a good idea, motor between both hands until it’s well front of the wing about 1/16 to make the especially if you tapered the fuse bottom coated. You can use the excess lube to model fly right. I prefer to taper the for a stab mount. The strawberries grease the prop shaft now and again. fuselage upward where the stab mounts. necessitate a lot of fuselage clearance, Now hang the rubber motor in place This sets the stab at a negative angle, like yet you want to keep your nook as short and determine the fore-and-aft balance the original Sleek Streek's stab. (Study as possible for weight considerations. the angle of the slot in the stock fuse­ For this reason I move the hook lage if you have any doubts. It isn’t slightly forward of the stab, and make it Con tinued on page 85

Cut away a portion of the prop hanger as shown, to give better Close-up of prop hanger, showing cut-away portion for rubber clearance for rubber motor. clearance.

AUGUST 1982 35 R/C AUTO NEWS Delta Eagle under MRP Spyder body. If this super-swoop body can be mounted, a n y th in g else w ill fit!

• Instead of doing the usual general- wait on introduction of the Eagle. Both chassis splice on the left. In order for the interest car column this month, I have Team DeltaandTeam Associated headed suspension to do its work properly and decided to use the space for what will back home to finalize theirdesigns, with consistently, this portion of the car has hopefully be an equally “ general inter­ the Eagle being the first to appear in to be quite rigid, and it is. est” type of article, a race-test of a new production, Associated’s RC500 being At the front. Delta decided to go with car, the Eagle from Delta. In the future, it just about due as this is written. So the a single suspension arm. It does cut is possible to have a regular column, word is out: suspension cars look to be down on the number of parts required, with race-tests being separate articles, the way to go in Open Class 1/8 racing, but the real reason seems to be to get depending upon the response to last judging by the commitment to the everything down as low as possible. It month’s column and this one. concept and the bucks required to back does that, but also means that as the THE DELTA EAGLE up such a commitment. front wheels go up and down they also You’ve already heard about it; this is To a racer who has campaigned Delta go through camber changes. Theory and Delta's new suspension car, and sus­ Super J’s for awhile, and I have, the Eagle past experience with full-size race cars pended 1/8 cars seems to be all the rage looks both very familiar and quite differ­ says there is a better way. On-track this year, with AMPS having done one ent at the same time. The overall robust racing tells me that you can’t tell the that worked OK a couple of years ago, construction and logical layout of com­ difference, as this front end does a PB following up with a better car, good ponents, along with beautiful workman­ terrific job of steering the car with great enough for MRP to spend the bucks to ship throughout is the familiar part. All accuracy and smoothness. From the import kits and spare parts, in turn the stuff that goes boing on the track pictures, you can probably see the allowing development of their own pan does not. vertical posts located in the area of the car to almost stop completely while they Tying all of thissproingy stuff together, outboard ends of the shocks. These are a pursue the 1/12 scene with their GP-12 front to back, is a ’glass pan (yes, it looks typically Delta touch; up- and down- car. While the PB car is still effective, it like a graphite piece, but it is black ’glass) stops for the suspension arms, keeping wasn’t long before it was obvious that that has an aluminum rear grafted on. the suspension from pulling or pushing there were a few problems, most notice­ This pan assembly would flex, just as in a against internal stops in the shocks. able being a strange wear pattern to the regular pan car, if not bridged with a The steering blocks are not real new, rear tires when the chassis ride height stiffener of some kind and in this design instead the “ quick steering blocks” used was set down low, as needs to be done the 'glass radio tray provides the re­ as an option on Super J’s. Front wheels on high traction surfaces. quired stiffness, attaching at the front to are sorta new, same design as before, So it was obvious that, while the AMPS a suspension pivot block, just in front of but now they have holes in them. Before and PB cars showed the way, there was the tank, to a cross-wise stiffener and at they were a little plain-jane, now they still plenty of room for improvement. the rear to a hanger on the right and a are better looking but harder to clean. Enter both Delta and Associated, intent on developing the suspension concept to a higher level of performance and ease of maintenance, which is a reversal of previous trends with the U.S. manu­ facturers, having enjoyed the lead in chassis development ... until the sus­ pension cars came along and, truth be known, caught both Associated and Delta looking the other way. Yes, all the Big-Gun factories were at the ’81 World Champs and they had the latest in suspension cars with them, only to have Art Carbonell and a flat-pan Delta Super J, which probably represents the ulti­ mate development of a flat-pan race car, smoke them off with ease in the 200 lap final. But Art was racing almost in his backyard, a definite plus, the track was tight, smooth, and the traction was high enough that some of the PB cars, even set down low, were simply rolling over in the corners. Even having the W/C’s crown in their back pocket, Delta was hardly about to

36 MODEL BUILDER Swinging front end; note anti-roll bar, lay-down coil-over shocks, Loosen one screw and carrier pivots upward, for access to main gear. adjustable caster. Note half-shaft hanging from inboard socket.

And they are interchangeable with cantly while still getting proper suspen­ And here I sit, trying to figure out how Super J wheels, which is nice if you are sion action. And it also results in a to describe the things. I think I could do already a Delta racer and have lots of certain amount of vulnerability from it so it would read right to me, but would front wheels. crashes; more on that later. it come across properly? Doubtful. So Even though the swinging front arms All of these arms, pivot pins, back- . .. these shocks are made in such a way are different and attract a lot of attention, plates, etc., mount directly, or almost so, that there is absolutely no air in them the anti-roll bar also gets its share of to very accurately machined aluminum when assembled and there is a floating notice, as it seems stiffer than you would hangers, which in turn are mounted to washer, backed up by a pressurization expect it to be, but it does the job the aluminum rear chassis plate, with the spring, that determines compression without binding, being very free in right hanger, the larger of the two, also and rebound damping. They are also operation. We'll leave the shocks for serving as a splice between the glass and completely sealed, as well as pressurized, later... aluminum pans (plates). In fact,the right so when compressed, the shock rod Skipping to the rear end, there are a hanger is pretty busy; it also houses the automatically extends to the relaxed lot more parts, necessary to keep the sealed ball bearings that the pinion gear position. I would suppose that isn’t an rear wheels flat on the ground through and the rear axle ride in. In all, the rear adequate explanation of an item that is a the limits of suspension travel. A molded end looks very busy, and is, but is also real breakthrough for suspension cars, carrier has three attach points, the two very efficient, as well as easy to work on. but the shocks don’t fade, require very on top picked up by a steel pin that runs OK, it doesn't look like it would be easy little maintenance (even then only very through an upper suspension arm, the to work on. But it is, believe me. few hours of running time to be sure the carrier, and then into the other side of Before leaving the suspension stuff, shock oil is topped up), are strong, and the arm. Neat and positive. The third and the shocks designed by Delta deserve work. lower attach point picks up a threaded almost a whole article themselves. Oh, and the shocks are the coil-over rod that has specially-made super heavy These pieces gave Bill Campbell a real type, with the springs that hold the car duty clevises fitted on each end. The fit. He knew what he wanted, yet getting up slipping right over the body of the outboard ends attach to the carriers, the it, at a reasonable price, was the prob­ shock. Ride height is quickly and easily inboard ends hook up to steel pins that lem. Recognizing that while other sus­ adjustable with the threaded adjust nut, anchor the lower ends of the shocks. pension cars did work pretty well, all had then locked in place by the jam nut. These clevises can easily be adjusted to a serious problem with shocks, both in Simple, neat, and effective. change the camber of the rear tires, so the action they gave and in reliability. The drive train is really interesting, that once the proper ride height is set So, by dismembering Koni and Bilstein especially as Delta was determined to the tires will wear flat. It all results in Shocks, he saw what they were doing eliminate jackshaft and chain drive quite a few parts, although I’m not sure and came up with a simpler way of doing how the Darts count could be cut signifi­ the same thing. Con tinued on page 80

Busy rear end, but accessible. Delta slide valve carb on Picco .21, Ball-type adjustable limited-slip differential offset slightly to right .200 bore restrictor in place. Good photos, Dan! of car, disc brake on left. Note anti-roll bar.

AUGUST 1982 37 The author's JVS Offshore Tunnel, all set for test runs prior to final paint job. Speed cowl built from an Octura Wing Ding 20 speed cowl. PRODUCTS IN USE THE JVS OFFSHORE TUNNEL . . . By AL BERRY

• Is it a hydro? Is it an offshore? Well, it’s The man who manufactures the JVS inches and a beam of 14 inches. It has a Τ­ both and can be run as either or both. tunnel has been around boats all his life. Ι /4-inch wide tunnel in the center that is The hull is legal in N.A.M.B.A. and He was a naval architect, designing not flat like most tunnels. It has a small I.M.P.B.A. Hydro and Offshore classes. engineer, yacht captain, yacht surveyor, vee angle at the transom. It also features In other words, you can run it as a tunnel shipwright, and has designed and built things like anti-air build-up sponson hull hydro or as an offshore racer over 300 boats 14 to 34 feet in length. bottoms, and on, and on. whichever you prefer. Most of these designs were drag and ski CONSTRUCTION type hulls. He began model boating The cat is very easy to put together. It back in 1951 (tether line) and went into comes with the deck already installed. R/C boating in 1969. He began manu­ The motor mount rails and an Octura facturing fiberglass model boats in 1971, five-inch omni mount are also drilled and has been at it ever since. Vern and tapped and installed. I chose the Schmidt, the VS of JVS (the J is his son K&B 7.5 engine for this hull. The engine Jeff, who makes the Pacesetter 1/4-scale was bolted in, then the holes were R/C sprint cars), is the man who we are marked off for the hardware. Once the talking about and the man with the hardware was in place, I aligned and cut "new” catamaran or tunnel, whichever the hole for the flexcable stuffing box. you prefer to call it. This tunnel hull is for the 40 engine class, with a length of 36 Continued on page 87

Stock K&B pipe. Prather pipe (above) gave Aluminum stuffing box is glassed into hull with polyester resin and fiberglass tape. Octura omni 700 to 1000 more RPM. mount comes already installed in the hull.

Finished built-up wood radio box with push rods installed. Box water­ Strut, with stainless steel ball (not needle) bearings. Note Norco proofed with paint. Spruce frame, 1/32 ply skins. ferrule in front of the strut.

38 MODEL BUILDER Author's Prather Deep Vee partially repaired after ramming by wife's Damaged sponson front on author's Excalibur 3.5 Tunnel after new Deep Vee. Backing of 1/16 ply epoxied in place. framing has been installed. R/C POW ER By JERRY DUNLAP BOATS PHOTOS BY AUTHOR

JERRY, I’M GO IN G T O Q U IT many people enter and exit the hobby. to the race. Is it Murphy's Law that states, MODEL BOAT RACING Before exiting, some of them do talk to “ If something can go wrong, it will?” I received a phone call the other eve­ me about why they are quitting. As This has special truth when it comes to a ning from one of the members of my editor of our club’s monthly newsletter, model racing boat. I pointed these local model boating club. Nothing new I’m often asked to have boats, engines, things out to my discouraged friend and about receiving phone calls from model radios, and equipment offered for sale told him he probably won’t have any fun boaters. It happens fairly regularly in the newsletter. So over the years, I’ve if he continues to drag out untested around the Dunlap house. The main heard my share of, “ Jerry, I’m quitting boats for contest days. topic of this conversation was presented model boating." It seems to me that "lackadus commit­ in the lead caption. In the sixteen years This opportunity to listen to those ment" is a big reason many decided to I’ve been involved in this hobby, the who no longer desire to be in our hobby give up on model boating. It doesn’t topic of quitting has been discussed over has given me some insights into why matter what the pursuit, be it golf, the phone a couple of times. Since I've people quite. Since involvement in tennis, archery, or any activity that been involved in this activity I’ve seen model boating can become an expensive people attempt to master, it takes com­ form of recreation, these thoughts mitment to achieve some degree of might save a potential model boater mastery. Too often, I've seen guys come money and frustration. There are job counselors, marriage counselors, invest­ ment counselors, and counselors for your psyche. Add one more counselor to the list, counselor for discouraged model boaters. The fellow who called the other night Tear in glass h u ll caused by collision. A lso actually said, "Jerry, I'm thinking of note propellor "teeth marks." quitting.” To which I responded with this bril­ liant question, “ Oh, why?” " I ’m not having any fun," replies dis­ couraged boater. Damaged sponson shown above before repair. When I heard that, I had sufficient First cut away damaged portion. information to begin my counseling. I attended the last race where discour­ aged boater didn't have any fun. He was right, he wasn't having any fun. This Tape on outside backs up fiberglass resin and particular model boater suffers from cloth applied to inside of tear. “ acute untestednitous.” Moreoften than not, he’ll show up on race day with new boats, engines, or untried setups, figuring they’ll work fine. On this partic­ ular day, he stripped the gears in a servo on his 7.5 outboard and blew an engine in his Sport 40 when linkages and con­ nections all shook loose. "Acute untest­ ednitous” is a malady that you’ll see if you go to enough races. Actually, the prescription for recovery is fairly simple. Auto putty used to fill prop marks and repairs Don’t attempt to compete with a boat First "sister fram e" is spliced inside existing to tom area. Sand out and paint. that hasn’t been thoroughly tested prior frame, followed by replacement.

AUGUST 1982 39 we are able to accomplish and our ex­ pectations are sometimes rather diver­ gent. This separation of expectations ILLY B. and actuality may be a source of great frustration. For some, this frustration may serve to increase their attempts to close the gap between their expectations and reality. For others, the frustration isn't worth enduring and they head for the exit. With the frustrations many people face in their business efforts, or Author's Deep Vee, shown on previous page, family life, why does one need to spend before patching begins. That hurt! Bill Brazzle's Klampon Kai shows collision the weekends getting frustrated? Frus­ damage. Bottom of sponson, too. trated folks aren’t much fun to be around and I've been around my share of them at boating events. Since no one is forced to enter a model boating event, it could be assumed that those entering did so because they enjoyed the activity. I’ve certainly seen some unusual meth­ ods used in displaying this enjoyment. It is not my purpose to try to persuade folks from quitting this hobby. In many cases, quitting is probably the best thing the individual could do. I’m actually thankful that this hobby doesn't appeal to great masses of people. If it did, I’d Patches of 1/16 ply glued to inside of hull, followed by outside patch. CA handy here. have to wait my turn at the pond every time I wanted to test out a new prop. Damaged area completely removed and inside Maybe we all need to examine our area cleaned to receive epoxy adhesive. motives for participating in the hobby. Are we getting out· of the hobby the rewards, satisfactions, or fulfillment we seek? Do we measure our success only in terms of trophies accumulated? It’s certainly something worth more than just casual consideration.

IF IT W O N ’T DRAW, IT W O N ’T RUN It has come to my attention that Side view of inside patchwork. Bottom hole probably the biggest factor in poor ready for outside patch piece. engine performance is fuel draw . . . actually, lack of proper fuel draw. Now this isn’t a pond draining discovery by any means. It is, nonetheless, a real problem area for many folks just starting out in our hobby. It happens to come to mind because of something that hap­ Internal bracing holds ply patch in place while pened the other day while I was helping epoxy cures. a couple of new model boaters with ■ I their Sport 40 powered by an O.S. Max 46. flow to the carb. The point to remember Better view of bottom hole. Inside support The guys called me up and asked me here is the importance of proper fuel piece ready to hold outside patch. to come down to the pond on Saturday draw for engine performance. to help them with their boat. They were out with the best equipment money can having a problem keeping the engine WHEN IS A 46 ENGINE NOT A 46? provide and think they’re going to im­ going. I showed up to see if I could The answer is when it’s an O.S. Max 46. mediately begin hauling home the figure out the problem. I richened up Actually it's a good thing it isn’t a true 46 trophies. Such usually is not the case. the engine to where it was almost in a cu. in. displacement engine. If it were, it There’s a father and son racing team I four cycle and it still quit shortly after the wouldn’t be legal for B Class in NAMBA know who did rather well last season. launch. I figured it had to be fuel draw so or D Class in IMPBA. The NAMBA B Their boating efforts were rewarded I had them strap the tank on top of the Class limit is .45 cu. in. while IMPBA when both won district highpoint driver’s cockpit to see what would allows .458 cu. in. in D Class. According awards. However, for the three years happen. Needless to say, it did look to Peter Chinn, who writes excellent previous to their successful season, they peculiar having a fuel tank mounted engine reviews in Model Airplane News, hardly won anything. I know how com­ where the driver usually appears. How­ the O.S. Max 46 is actually a little less mitted they were because I raced with ever, the boat ran for the first time since than .45 cu. in. in displacement. The them and helped them out when I the guys began testing it. It should be figure .447 cu. in. seems to be what I could. They asked lots of questions, tried noted that I've seen this type of boat run remember. Although I don’t have one of different things, built lots of boats, and with a different engine and the fuel tank these engines, I will say that they are a finally hit on combinations that proved mounted down in the boat and there very fine looking and performing unit. successful. wasn’t a problem with getting theengine They are comparable in price with the “ Expectations unfullfillious” drives to run. But different engines may re­ K&B 7.5, if you consider that few people many from the hobby. All of us have quire a higher tank setting to allow for use the K&B 7.5 stock exhaust throttle, expectations about what we think we adequate fuel draw. Another thing that electing instead to use a different ex- should be able to do with our model might be helpful is the use of pressure boats. Unfortunately, the reality of what from the tuned pipe to assist the fuel Continued on page 78

40 MODEL BUILDER John Simone JR's American R/C Helicopters Super Mantis with a Schluter Heli-Boy and Mini-Boy as marketed in the U.S. by M ini­ wild color scheme. Mantis and Super Mantis economically priced. ature Aircraft Supply.

• This month I'd like to cover the CMI is run by Dave Robertson, who outlet, was Kavan. Condor Hobbies has helicopter high points of the ’82 MACS imports the Kobe-Kiko helicopters from purchased Kavan’s U.S. inventory, and show. It seemed that the overall number Japan. I might add that Dave will be will distribute Kavan kits and parts. The of booths was down from last year, but carrying balancers and counter-weights new Kavan ball links have little tabs on the helicopter turnout was very good for the Hughes 300 head set-up as I the front of them, making it easier to and interest seemed high. It’s always described a month or two ago in extract them from the ball. Other than partly frustrating to go to the big trade Chopper Chatter. You can look for CMI that, I haven’t seen anything else new shows: All of those nice new helicopters to grow and gradually carry a more from Kavan. displayed, and I’d like to have one of extensive line of helicopters. Continued on page 77 each! Not new. but under a different U.S. The major manufacturers displaying their products were American R/C Helicopters, Circus Hobbies, Gorham Model Products, and Miniature Aircraft Supply. In one of the booths, California Model Imports (CMI) displayed its Hughes 300 and incoming aerobatic Stunt Homer. The Stunt Homer is a fully aerobatic .60 powered helicopter with a beautifully machined main transmission case. The mechanics in this machine are incredibly smooth; when the helicopter is flying with a quiet muffler, about all you can hear is the rotating blades. Several months back I reviewed the Hughes 300 in the Chopper Chatter Trio of choppers from Gorham Model Products' Heli-West: Hughes 300 based on Cricket column. Look for more information on mechanics. Cricket, and gasoline powered Bell 47. the Stunt Homer in the future.

Hughes 300 and Stunt Homer (foreground), a 60 powered aerobatic The Kalt Custom Baron 50, one of many Kalt choppers, and mar ship. Hughes was reviewed a few months ago by the author. keted in the U.S. by Circus Hobbies.

AUGUST 1982 41 1. A Shereshaw Eaglet by SCIF Larry Clark. Seen at SCAMPS 2. Cute little 1/2A Texaco Miss Philadelphia F/F by Bob Dittmer. Texaco meet, Taft, California. Flies as good as big one.

and inaugurated by the SCAMPS, SAM 13. It is hard to believe this meet has been run over 15 years to date! The best portion of the meet is the so-called “ Dawn Patrol” , where flying starts at 6 pm m m a.m. and closes at 9 a.m. This year, flying By JOHN POND closed at 10 a.m., thus allowing some very good thermals to generate, with Brad Levine using a Powerhouse to win '\ with a flight of 58:30. Photo No. 1 shows SCIF Larry Clark of • Not too many readers realize that this clippings from that area. After all, fellas, 3626 Cadman Dr., Los Angeles, Califor­ reporter could write a monthly column we can't print what we don’t get! End of nia 90027, with his second place winner, on the activities of the West Coast only. soap box! a Shereshaw Eaglet (not the Scientific There are so many contests being held Hence, it is will mixed feelings, we Co. version), with a long flight of 40:16. every weekend, it is not a question of report the April 17-18Texaco meets held This design appeared in the short lived going to a contest, but which one! For at Taft. Would you believe there were Brown Jr. Co. newsletter called Arpiem this reason, if it seems like the column is four distinct meets going on that day? (RPM to you!). occasionally overloaded with west coast How would you like to try your luck on In the four issues, two gas models activities, it is because flying is available the following: (1) SCAMPS Texaco F/F appeared: one by Steven Kowalick year around. plus other O/T events; (2) SAM 49 called the “ Miss Arpiem” (MB has plans) To keep the column from getting a Texaco Annual plus other O/T events; provincial look, this author attempts to (3) a Silents Please meet featuring rubber cover as much as possible of the old and glider; (4) a regular modern F/F timer activity all over the nation and meet featuring FAI models. Seemed like abroad. If you, the reader, feel your club every time you turned around there or area has been neglected, it is only were at least three models in the air. because this columnist has not received The favorite free flight event of this any letters, writeups, photos, or even columnist is the Texaco Event as revived

3. Another Miss Philly VI, R/C by Ray Van De Walker (on transmitter). Stationary prop 4. Ray Van De Walker, Chicago, 1938, with could mean electric power. Just switch on at launch. original design by Flatelstead. Dennymite.

42 MODEL BUILDER 5. Jack Albrecht's "Kerswap" looks like it's going 60 mph just sittin' still! A potent machine. 6. That hot ignition McCoy 60 looks mean on Ross Thomases Swoose with 2-wheel gear. and the second by Ben Shereshaw While we are on this kick, Photo No. 3 and John Targos as the assistant Contest named the "Eaglet” . The latter model shows Ray Van de Walker, of 15619 Director. The meet went off quite bears only a superficial resemblance to Leibacher St., Norwalk, California 90650, smoothly, except for the one inevitable the Scientific version, being larger and with his R/C version of the Miss Philly VI. transmitter being left on. featuring sweepback in the wing plan. Like Dittmer, he didn’t win either, but Actually, the contest enjoyed a great This model has been successfully Ray says you can’t beat this event for fun. day for weather, times kept improving scaled by Ross Thomas for R/C Texaco Couldn’t resist showing a now and as the day wore on. The best time of the work. Ross, at present, holds the unoffi­ then photo comparison as Photo No. 4 day was registered at the very close of cial high time for Texaco of 1 hour, 40 depicts Ray when he was 17 years old. the contest by George Wagner, as he minutes. Ross was quite fortunate he Surprisingly, he still has the same blonde beat Thomases time of one hour and 2 didn't run out of battery like Bruce hair albeit some of it is now grey. This minutes by several minutes. However, Norman did when he actually broke the model he is holding is a diamond pylon upon checking the records, somebody Thomas record but was unable to get model, 6 ft. in span with a Dennymite for slipped up, as it was his third flight; back to the field. Result: a zilch flight. power, somewhat resembling the very hence, disqualified. (Only two official While on the Texaco kick, the biggest successful Alva Anderson Pylon. This flights with three attempts are allowed in thing to hit free flight since the 020 design by Harold Hatelsted indicates the Texaco. The one long flight wins.) That Replica Event is the 1/2A Texaco event. drastic changes going on in 1938 to was a tough break. This has proven to be extremely popular pylon type models, based on the suc­ This columnist has no reason to chortle in free flight and even more so in radio cesses of Anderson and Goldberg at the over the above, as he pulled a "Bruce assist. Photo No. 2 depicts Bob Dittmer, meets in 1937-38. Norman” and landed off the field after a of 16332 Redlands Lane, Huntington This is a natural lead-in to the 9th particularly long flight. Jack Albrecht Beach, California 92647, with a 1/2A Annual R/C Texaco Contest as held by put it quite succinctly when he answered version of Maxwell Bassett's Miss Philly the SAM 49 boys, headed up by Otto Pond's complaint with the simple state­ VI. This little cutie flies just great. Bernhardt. This meet, formerly run by ment, "Greedy!” Although he didn’t win this time, Bob SAM 21, is now called the Spring Bi- While mentioning Jack Albrecht, the figures there is always another day. Annual. I like the other title better! Service Manager for Kraft Systems, Winner of the 1/2A Texaco Event was Bernhardt couldn’t complain about Photo No. 5 shows a recently approved John Zaferius, flying a Powerhouse, with lack of help this time, and the facilities design by Gil Robbons called the “ Ker­ a time of 32:03, followed by Taibi and were excellent, with a loud speaker for swap” , so-called by the designer as the Calvo with Powerhouses and times of paging the contestants, a monitor for the noise it made when it spun in. This 25:19 and 25:04 respectively. transmitters, two people on registration, Torpedo 29 powered version really gets

7. Norman Burnett with his Alva Anderson Pylon with a Mel 8. Don Lampson and his record setting American Ace, at Woodland, Anderson Spitfire up front. California, April 27, 1941, the day of the record.

AUGUST 1982 43 9. Col. Bob Thacker does it again! It's a Don Donohue Five Ft. Gas 11. Early gas job by Louie Shocke. Los Angeles circa 1935. powered Model, with OS 19, on R/C. by one of first Atwood engines. up in the blue on a 55second motor run, for eight years now with varying degrees 3. Don Carrl (Mike) 19:38 an overkill if this writer ever saw one. of success. Now, along comes Ernie In closing off, it is interesting to note Still can’t understand why he did notwin Payne, making a free flight model out of the Electric event, flown over two days with this very slick looking model. his R/C version by launching with the with seven minute maxes, was won by Backing up, we would like to run switch off. Of course the model disap­ Pat Patterson, followed by Jack Albrecht, Photo No. 6 of Ross Thomases ‘‘Swoose” peared in the blue after 11 minutes, and and Ray Van de Walker, all using Leisure with a McCoy 60 red head ignition in the guess what? That long time free flighter, Playboys with .05 electric motors. With a front end. Ross Thomas, who resides at Sal Taibi, found it while on one of his minute and a half motor run, these 1013 S. Austin, Santa Ana, California retrievals and brought it back!! models get pretty darn high as the new 92704, says even with 4-1/2 pound We have yakked about the R/C ver­ cobalt electric motors have the power weight, the model gets up so darn high.it sion of Texaco more than we had antici­ now! takes almost seven minutes to fall down. pated, but with the new 1982 SAM R/C NATIONAL O /T EVENTS Also worth noting is the two wheel gear rules in effect, it is interesting to see About time to get this in the news, as on the normal single wheel setup. what the results and models used are: this columnist has been too involved Under SAM rules, you can substitute CLASS A/B with the SAM Champs at Chicopee, two wheels for one, but not the other 1. Pat Patterson 21:00 Massachusetts to get out any announce­ way around. 2. Jack Albrecht (Kerswap) 20:06 ments. While wandering around the field, 3. Ross Thomas 19:53 As usual, this writer will hold the old this writer simply had to take a picture CLASS C timer events at the Lincoln, Nebraska (Photo No. 7) of Norman Burnett and his 1. Ross Thomas (Swoose) 20:48 AMA Nationals. Events will shape up like latest R/C Texaco model, an Alva 2. Ray Van de Walker 20:39 this: Anderson Pylon model with a Mel 3. Ed Hammer 19:31 1. Wednesday, August 7 Anderson Spitfire for power. ANTIQUE O/T R/C ASSIST It always is amazing to see Norman 1. Pat Patterson (Lanzo) 34:49 Class ABC doing with one arm what half of the 2. Jack Albrecht (Anderson) 33:01 Antique other guys can’t do with both arms! Al­ 3. Ross Thomas (Bomber) 22:02 Texaco though there were no reports of how it TEXACO 2. Thursday, August 8 flies. Norm doesn’t have to take a back 1. Ross Thomas (Bomber) 1:02:35 O/Γ CONTROLINE seat to anyone when it comes to build­ 2. Jim Adams (Laurie) 39:23 Stunt, Ignition Power ing a nice model. 3. Bob Oslan (Commodore) 30:43 Stunt, Glow Power It is consoling if someone else pro­ 1/2A TEXACO 3. Friday, August 9 vides the comic relief, as this writer has 1. Ernie Payne (Lanzo) 26:28 O/T FREE FLIGHT been flying his Miss Model Craftsman 2. Don Hoyle 21:56 Class A

10. Compare with photo No. 9. This is original Donohue model at 12. Mark Fineman's neat Earl Stahl Schweitzer TG-2 glider, to be Burbank Airport, 1937. Ced Galloway photo. entered in the '82 SAM Champs.

44 MODEL BUILDER 14. Really dooded up Comet Clipper w ith wheel spats and cowl, by 15. Beautiful "Flying Minutes" by Brian Yearley. Winner of Aero- Woody Woodman. Super Cyclone power. modeller Cup at Model Engineers Exhibit. Also winning flier! Class B Cleveland Model Supply Co., then of ual were adopted in the Tom Thumb Class C 1866 N. 57th St., Cleveland, Ohio. brochure even to the instructions on Rubber Stick Reginald Denny, on the West Coast, was how to carve a "Tom Thumb" (Mighty Rubber Cabin the other manufacturer to feature a Midget) propeller. No questions about Junior Rubber combination motor-kit, but that is it, the Cleveland Co. had picked a Antique 30 Sec. another story we will feature in a subse­ thoroughly proven engine to go with 020 Replica quent issue. their new Stinson Reliant and Rearwin Junior Rubber The first advertisement appeared in Speedster gas model kits. Twin Pusher the November 1937 issue of M odel The drawing of the Tom Thumb Notices will be posted around the Airplane News announcing the avail­ engine we are presenting this month is central hangar giving times and loca­ ability of the new “ Tom Thumb" engine. actually a simplified version of the tions. Trophies will be given to third The prospective buyer was offered two original plan. The original three-view place in each event. Entry fee will be $3 ways to go, in ready-to-run form at drawing showed methods of assembling per event. Hopefully, we will break even $17.50 or the kit style at $9.75. the crankshaft, connecting rod, and this time. There was no doubt about who was piston. The wiring was shown both in the As soon as it can be firmed up, there producing this engine for Ed Packard of form of a wiring diagram and a pictorial will be a Victory Awards Banquet Friday Cleveland. The engine was a carbon hookup on the three-view. Special night, probably at the same place as last copy of the “ Muff-head" Mighty Midget emphasis was made on this point, as time; the Nebraska University Faculty engine. Interestingly enough, the Tom many a modeler will recognize the dining room. Was real nice and even Thumb was marketed in the same man­ majority of engine starting problems was better eating. See you therel! ner as the Bunch people; i.e.,assembled the weakness or lack of spark to the In case of questions, please feel free to or in kit form. However, the Cleveland plug. write this columnist. Remember, the engine was priced higher. Not many of the old timers will recall emphasis is on fun!! The Instruction Manual which accom­ the old way of describing carburetion in ENGINE OF THE MONTH panied the Tom Thumb engine was very those days, regarding only “ four- One of the earliest companies to heavily based on the Bunch Model cycling" for slow running and “ two- feature a gas engine to complement Airplane Company’s Might Midget cycling" for top power setup. In the their gas powered kit models was the Brochure. All features of the MM Man­ early pamphlets, running of motors was Continued on page 67

13. The late Hi Johnson, in early '50’s, with original glider design. Photo by Galloway.

AUGUST 1982 45 THE “ IN CROW D” it. The weight of the dome, they said, COES T O WEST BADEN would collapse the building. He finally (Editor's Note: Through a slip of the approached a young architect named calendar, Ken Johnson thought this Harrison Albright, who drew up the article would appear a month prior to plans. the big one at West Baden for 7 982. As Construction began on October 1, your read this, it has already happened! 1901, and 500 w orkm en labored Even so, the background material should throughout the winter and spring. On be of interest to indoor modelers, wen) June 14, 1902, Col. Sinclair entertained June is traditionally the month for guests in his new hotel. weddings. If you’re a freeflight modeler The new endeavor was a huge success. and specifically an indoor modeler, The wealthy came to “ take the waters" then June is the month for the big of the nearby mineral springs. There was indoor meet at West Baden, Indiana. golf and strolling on the beautifully For those of you who are new to manicured grounds. Many just came to indoor modeling or have been away bask in the magnificent Edwardian from it for awhile, here is a little history splendor. guests in this hotel of over 700 rooms. on this exceptional indoor flying site. The hotel was sold after Col. Sinclair's The hotel was closed in 1931, and later The original building occupying the death, to Mr. Edward Ballard. It was the donated to the Society of Jesus. On June site was called the West Baden Hotel. "Roaring Twenties,” and there were 28, 1934, the hotel became a Jesuit On June 14, 1901, it caught fire and vast banquets in the Pompeian Court, Seminary. In 1966, it was taken over as burned to the ground. The owner. Col. reductions in the opera house, and one of four Northwood Institute cam­ Lee Sinclair, decided to rebuild on the Cicycle rides around the double decker puses. Other Northwood campuses are same site. The new building would be track. A trolley car took many big time iocated in Michigan and Texas. circular and surround a vast domed spenders to the nearby casinos. As the photos show, the building is a court. He took his idea to several The Depression came and the bubble 208 ft. diameter atrium. It is covered by a architects who turned thumbs down on burst. At one time there were only five dome that is almost 100 ft. from the

Florida's Dick Kelso and his indoor air armada. Twin engine and Retired airline pilot Walt Everson winds his Easy B at Opa Locka. biplane his specialty. Photo by Bob Andrews. Was 1981 Florida indoor champ. Andrews photo.

46 MODEL BUILDER FULL SIZE PLANS AVAILABLE - SEE PAGE 100 floor. The Italian Terrazo tiled floor is the largest in the world. The building has rooms facing the atrium and rooms facing the outside. Many of the rooms facing the atrium have balconies. Ele­ vators connect the six floors of the building. Around the edge of the atrium floor one will find very large potted plants and statues. A circular bandstand is located in the center of the domed ceiling. At one time, this unit was lowered to the floor, with it’s band members playing Charleston Era music for the dancers on the atrium floor. This bandstand is now permanently fixed to the ceiling. A plastic shroud is draped over it when indoor models are flying. WEST BADEN AS A FLYING SITE Everything good you’ve heard about WB is true. The air is dead calm and is warm and bouyant from mid-morning throughout the day. Since the room is New event introduced in Burbank, CA meet. Blacksheep Club member Bill Brown launching his Gee Bee Sportster in Catapult Glider Scale profile.

AUGUST 1982 47 BdCKWdRD B€€533

By BILL HANNAN ... An extremely rare and little known aircraft, and a complete departure from what the world of aeronautica would expect from the Granville brothers. Like "Snow White", there was only one.

• Canards are fascinating flying ma­ American B-70 Valkyrie. And many The name Gee Bee, of course, was chines. As long ago as the Wright Bro­ others. derived from the initial letters of Gran­ thers’ "Flyer” and as recently as Burt In model form, the canard has been ville Brothers, an unusually talented Rutan’s designs, they have been the popular in genres ranging from the group of craftsmen. Leader of the clan subjects of endless discussion and con­ early-day sling-shot gliders and rubber- was the dynamic Zantford D. Granville, troversy. Throughout aviation history powered twin-pushers,through modern affectionately known as "Grannie,” ably they have been dismissed as illogical, radio-controlled examples, the most assisted by brothers Thomas, Edward, only to arise again every so often, in recent of which was Skip Ruff’s "Ascen­ Robert, and Mark, as well as people various parts of the world. There have der” which appeared in the June Model outside the family, such as the now- been, for instances, the Franco-Brazillian Builder. But the subject of our story is an famous Bob Hall and Howell Miller. Santos-Dumont 14-bis, the British Barber earlier "Ascender,” the Gee Bee canard The canard envisioned by Zantford Valkyrie, the French Bleriots (at least of 1931. Overshadowed by the more was radical even by his innovative three different types), the Italian Anitra, famous barrel-shaped racers,thisunique standards. Beginning with the remains the German Focke-Wulf Ente, the Soviet craft deserves examination, both for its of a damaged Aeronca C-2, the design Ytka, the Japanese Shinden, the Ameri­ unusual features and for its modeling was constructed in about one week, at a can Curtiss Ascender, and the North suitability. reported total cost of $500! (They sure

Poor quality photograph, but significant as it shows Zantford Mark Granville, with Gee Bee logo on back of well-used coveralls, "Grannie" Granville at the controls. about to crank Aeronca engine in Ascender.

48 MODEL BUILDER Mark Granville about to take Gee Bee Ascender aloft. Although a low-time pilot, he adapted easily to machine's flying characteristics, but discovered its shortcomings the hard way. See text. don’t build ’em like that anymore). Science Museum in Massachusetts. would be ideal for an R/C version, When the Ascender was first rolled out, The late Bob Granville, who helped which might even sound similar to the it attracted a great deal of public atten­ build the Ascender, exchanged a num­ original! tion, which was most embarrassing to its ber of letters with the author during Tom Walker, of New York, has already builders, since the tired Aeronca engine 1977, in which he said, in part: “ I do not built an R/C model and hopes to present simply refused to run. The culprit have a three-view and I doubt if one was information about it in a future issue of seemed to be a compression leak, so ever made. The ship was built with very Model Builder. Meanwhile, if you care chief engineer Bob Hall volunteered to little money, just to prove or disprove to try one of your own, the accom­ fly to New York to obtain a replacement two things: 1) Would there be any panying side view drawing, which was cylinder and piston. advantage to having stabilizer and checked over by Bob Granville, may Early the follow ing morning, the elevator controls in front? 2) Would a serve as a useful starting point. The wing reassembled two-banger was putting three-wheel (landing) gear be better Continued on page 102 out somewhere near its full 28 horse­ than a conventional tail dragger?.. .the power, and Zantford was eager for the ship flew well and made excellent first test-flight. A local newspaper re­ landings in almost any position. .. Gran­ porter saw it this way: "FREAK PLANE nie concluded that the three-wheel RUNS WELL IN FIRST FLIGHT” "Just arrangement was great but could find no before 6 o’clock he taxied his craft to the advantage in the forward tail." end of the field, opened the throttle and Zantford did design a follow-on air­ waddled . . . the plane looks as clumsy as craft to utilize some of the knowledge a duck on the ground . . . to the takeoff. gained from the Ascender experiments. The machine climbed well and Granville It featured a pusher engine, wheel flew it back and forth across the airport pants, and a conventional tail location. twice before he made a slow and easy Unfortunately, the machine was never landing. He expressed entire satisfaction constructed. with the performance of the ship and The Gee Bee canard should be quite plans on his return from the West to suitable as a flying scale model, either as extend test flights to cover climbing and a free flight or R/C type. A Brown Junior speed rates.” twin C02 engine would be a natural for Later, a forward rudder was added to a a small project, while one of the two- A ll that remains today, whimsically created tall tube extending up from the nose cylinder, four-stroke larger engines by Mark Granville. wheel. The handling was tested with it actuated separately and in conjunction with the rear rudder. From an aerodynamic standpoint the canard was quite stable and easy to fly, with one notable exception: The aileron response was very sluggish, and this was to contribute to the Ascender’s demise. Young and inexperienced Mark Gran­ ville had flown the craft a few times and enjoyed it thoroughly. But on New Year’s Day, 1932, he managed to bank the Ascender so steeply that the limited aileron authority could not effect a recovery, and it spun into the ground. Mark was seated upon bare steel tubing fuselage structure without any seat cushion, and the impact of the crash inflicted a painful injury to his back. Yet, his good-natured reaction was to cut the offending assemblage of tubing out of the wreckage and mount it on a wooden display base along with the Ascender’s identification plate. This curious artifact Experimental forward rudder. Normally flat-bottomed Aeronca wings appear to have trailing is displayed today in the Springfield edge droop. Anyone ready to give it a try?

AUGUST 1982 49 Proof that most anything will fly . . . if your approach is p roper (see te x t). P hoto b y Alain Parmentier. • This month's lead-in line is via Clyde small percentage actually replied, but BAM A . . . see Bill’s next subject, wen) Howard, who claims no originality for it, the results, as presented by President Interestingly, many of these avid free saying that it goes way back in time. A.J. Italiano, make fascinating reading. flighters also pursued other modeling ABOUT TIME Answers were received from 36 of the facets, including R/C (especially gliders), Model builders never seem to have United States and 7 foreign countries, cars, boats, and control-line aircraft. enough of it, right? Bill Warner, in a and the age ranges represented are Among the divisions of free flight, philosophical mood, muses about the particularly revealing: By far the largest rubber-powered modelsand old-timers problem: “ I found that there is no such number were in the 31 to 50 year old appeared to lead the pack. thing as time compression when you are category, closely followed by those in Rather highly educated as a group, the bored. Any time one feels that time is the 51 to 70 range. Of these, the majority free flighters drew this commentary zipping by and you want to slow it down, began building model while they were from Italiano: ‘One would not think just stare at your watch’s second-ha nd or between eight and 11 years old. Only a that free flighters were that well-edu­ something else like that. Time will slow tiny percentage took up the hobby after cated . . . considering letting a model go down. It will drag. I’ll bet I could live 200 their 30th birthday. free in the air, not knowing where it will years (in perceived time space) if I (The implications of this survey are come down, and then chasing after it to arranged to be bored all the time. rather disconcerting, and confirm a retrieve it! And with the technical Instead, what do we do? All sorts of suspicion I've had for several years. expertise of the membership, one would interesting things which make our per­ Unless the present trend changes, the assume immediate embrace of a wireless ception of time seem as if it was passing hobby of building and flying model means of control! But, no . .. these rapidly. What a choice to have to make!” airplanes will continue to diminish as strange people are health nuts and insist Ever notice how time flies the night modelers die off, and will eventually upon a footrace for the exercise in­ before a contest? disappear from the earth! The chances volved." W H O ARE WE? of the trend reversing are as unlikely as a The National Free Flight Society is The National Free Flight Society re­ return to all types of stores of 70 cent open to any interested persons, and a cently completed a member survey. As is stick and tissue model kits. Nevertheless, usual with such an investigation, only a we steadfastly support Ed Whitten and Con tinued on page 71

Full-size Nieuport monoplane similar to Hang­ ar logo, submitted by Michel Benichou, Editor Intricate hand-painted color scheme on Peanut Scale Fokker O-V III is the patient work of in C hief, le fanatique de /'Aviation. Australian Bruce Kennewell.

50 MODEL BUILDER

during its life it was, itself, varied! Whilst it is true that we paint an aircraft for a number of very good reasons (waterproofing, air-proofing, decoration), one of the foremost reasons for the use of pigm ented finishes has been the need to cut down on the ravages of sunlight’s injurious rays. The degredation of our modern world's garbage is related, in part to the problem of deterioration of aircraft fabric. We seek materials that will return to the earth as inoffensive muck that will remove from view the " benefits” of our civilization. Bio-degradable is a popular work today. Sunlight, assisting in such degration of an aircraft’s covering was, as you can well imagine, far removed from the list of happy events. A sun­ screen was the answer, ergo: PC-10. So often referred to as "khaki’’ - a word for dust colored in Urdu - the color seldom brings to my mind the hue we know of as an a/c color. No, Khaki No. 7 (much lighter) reminds me of dust. It is a light yellowish grey. We used a darker version after the war (No. 9? No. 12?), and though it would be close to Another Bill Noonan gem, this 30-inch span Armstrong-Whitworth "Ape". Both ships PC-10, all it reminds me of is wet prepared for the 1982 FAC meet. webbing brushed by hand until it was dry, hard, and shining! Both colors were khaki by definition. They used, of The standards of manufacture and the the range would seem to be fairly course, different pigments. So it was doping schemes issued by the Air Board considerable, a consideration of the with the various paint manufacturers kept the colors within a reasonable effects of the doping schemes will assist who sought government contracts for range. If you wish to be perfectly in the realization that the basic color the supply of PC-10. Forced by pigment accurate, it would be necessary to could be closer than the final result availability, and the need to avoid patent precisely duplicate the pigments and the might indicate. infringement, they matched the desired doping scheme. And you would also CLASS A doping was in tro d u c e d color as near as they could from their face the fact that PC-10 eventually during April 1916. Five coats of clear own formulations. A perfect match meant five individual preparations which dope were followed by two of pig­ would be possible only when the same were subtly different one to another. mented varnish. It in obvious that the materials were used. The result has to be The range of color, as determined by Ian number of man-hours required were variation. The use of different pigments Huntley, would be from 3(E-F) to "almost high and, it should be noted, that the would also result in variation of 5F8” (using Methuen as the color scale). results were not as durable as might have chemical reaction of time and weather­ Such a range would take the color from ing agents - further accentuating the an olive green to raw umber. Although Continued on page 74 color shift. Perhaps it would be appro­ priate to note at this point that there were (wo khaki’s in use at the beginning of the war: the Royal Aircraft Factory’s specification for PC-10, and (he color used by the Air Department Admiralty. It was not until the adoption of unified standards under the joint Air Board that the RFC and the RNAS used the same pigmented cellulose. PC-10 was, originally, a top coat var­ nish. When it was changed to be a shrinking dope, there was a need to vary the amount and type of pigment used. This brought further variation of color into the picture. The German submarine campaign caused severe shortages in Britain during 1917. Guided by the Air Board, many manufacturers found a market for their equivalent of PC-10. The need for standardization also war­ ranted the issue of doping schemes by the A ir Board: Class A, B, C, and, eventually, D. It can be said that these doping schemes, themselves, caused further variation in the basic khaki color as appreciated by the eye. Like Alice in Wonderland, it does become " curiouser and curiouser,’’ but don’t get the idea that any old choice will be correct color.

AUGUST 1982 55 Bill Hunter at San Valeers m onthly contest. Moor Park, CA. Satellite (what else!) A/B FAI with Supertigre. No chase bikes allowed. Photo by Bob Ohly.

Ed Hopkins, Fillmore, CA at San Valeers monthly. Original 1/2A, Cox .049, Tatone FREE FLIGHT tank mount. See text for Ed's comments on breakaway tips. Photo by Bob Ohly.

• Since my last column, I’ve had to the East who wants to go to the Finals can new version is not much better, if any, undergo some additional surgery, this count on enough qualifiers dropping than the old ones. Some samples ran time at the Memorial Sloane Kettering out to permit him to go. good when new, but deteriorated rap­ Hospital in New York City. (I’m recuper­ As time passed, I got phone calls from idly in performance, while others just ating nicely now . . . should be ready for Joe Wagner, Cliff Montplaisir and Dave wouldn’t put out at all. Several European this summer’s contests.) While not an Rounsaville, who clued me in on how teams who received them before last ideal way to spend my spring vacation, things were going in other areas. Both year’s World Champs ended up sending my stay there did enable me to re­ Joe and Dave are very active FAI flyers, them back to the factory. One possible establish some old contacts and make so I asked them for the latest scoop on bright spot in the FAI engine supply some new ones with East Coast free the new Rossi .15. Theprevailingopinion situation will be the K&B production flighters. is that all the changes made in the version of the Cox Conquest. Produc­ In my case, I called up old traveling engine were not for the better .. . the tion is being delayed by the regular buddy, Bob Hatschek, and told him that “ bread and butter’’ engines, but they I was going to be confined for awhile. should appear this summer. Bob's response was above and beyond Dave also has received one of Tom anything I expected. Not only did he Roster’s electronic timers, and has been come by the hospital for a visit the using one of his folding carbon-fiber second day after the operation, he props since last fall. He’s promised to checked in by phone each day and had send some photos soon. other free flighters call me during my PRESS RELEASE stay. In addition to being a great morale The National Free Flight Society is very booster, these contacts gave me quite a proud to announce its selection for the few tidbits to share in this month’s 10 Models of the Year Award. column. International Class One of the items we discussed was the F1A - NORDIC 811 by Ivan Horejsi location of the FAI FF Team Finals. Re­ (Czechoslovakia) sults of the vote of finalists had just come F1B - RUBBER ESPADA by Lothar in, making the site as Taft for the third Doring (West Germany) time in a row (and four out of the last five F1H - GLIDER HOT MAX by Jorgen times). This has caused quite a decline in Korsgaard (Denmark) FAI interest on the East Coast, as many AMA/Outdoor flyers are declining to even enter the Large Power: SWEET DADDY PEARL by team selection program if it means going Richard Covalt to Taft each time. The other effect is that Small Power PAY-TRIOT by Harry a lot of people who qualified at the semi­ Murphy finals are dropping out of the Finals, thus Rubber MONARCH II by Chris Matsuno allowing those alternates who want to Indoor Young F/Fer of the month, Ed Mate, Jr., Paper Stick PAPER TIGER II by Jim make the trip to take their place. This, of proudly shows off his original design Nats course, changes the significance of the winning Coupe D'Hiver. Richmond semifinals, since virtually anybody from Hand Launched Glider UPSTART by

56 MODEL BUILDER Mark Dřela Special Awards MODEL AERONAUTIC YEARBOOK by Frank Zaic CHAMBERMAID by Bill Henn MYSTERY MODEL This month’s MM comes courtesy of Dennis Phillips, who accompanied Bob Hatschek to the hospital. Dennis is a West Texas native now ensconced in the big city, very interested in FAI power. In real life, he deals with composite mate­ rials for use in helicopters, which is useful experience for forming all those fancy glass/Kevlar/etc. parts now in vogue in the F1C event. Such sophistication was not in vogue when this model appeared. It was de­ signed by one of Dennis’ West Texas flying buddies, spotted at a postwar Nats and published. Major identification fea­ ture should be the fuselage’s distinctive shape, as the wing and tail are more conventional in outline. If you think you've got the design spotted, send in your entry to the Model Builder office (621 W. 19th, Costa Mesa, CA 92627) to see if you win a subscription. MODEL OF THE MONTH ... Hot Max A/1 I’ve always felt that the A/1 class glider some more about the design (from Free height similar to an F1A glider under has been neglected as a means of start­ Flight News), which was named as oneof catapult launch. The models need a little ing out. They’re small enough to be the NFFS TOP 10 Models of the Year for wash-in in the inner wing and show a cheap to build, but fly well enough to 1982: very slight tendency to drift right on the make good contest models. The prob­ About the Max’s: It all began in 1974 tow. To prevent too much looping lem, I feel, is that the class is too often when I designed a novice model, with tendency they have a 54-57% CG. Still air combined with its big brother, the A/2, square wings and Koster Wakefield air­ times are well over two minutes, and the in local contests. A good big model will foils. This model has been developed models are very stable in all kinds of beat a good little model most of the through the years and is now still easy to weather. We believe that the pointed time, so the A/1 flyer usually ends up build, but tough, and easy to fly. How­ airfoils with the maximum camber well building the bigger class. This is not bad, ever, by 1979 Heinzi (one of the students) forward helps here. The wing tip airfoils but the class is interesting enough to was no longer satisfied with this type are kept thin, with a little more camber warrant a little fairer chance in competi­ model, so I designed the first Super-Max than the root sections. tion. With the new heavier weight and especially for him, and it flew ‘off the DARNED GOOD AIRFOIL ... more reasonable two-minute max, A/1 board'. It was the first model in the club KOSGAARD A/1 could be profitably combined at local to use a Ronytube fuselage, but the meets with Coupe and/or P-30. normal spruce/balsa one which I pro­ One reader, David Glassey, wrote in Hot Max's designer, Jorgen Korsgaard, duced for Easy-Max seemed better. It to inquire where I find the DGA’s fea­ works as a teacher with the Danish was lighter, stronger, and did not ‘whip'. tured in this space. Well, I do have a file speaking minority in northern West Six such fuselages have been built so far of airfoils collected from various sources Germany, less than two kilometers from and not one has broken yet. It is not so through the years, I keep looking for the German/Danish border. He’s got a easy to build, but we think it looks others in newsletters,and if all else fails, I club going at his school, 12 members, better. find one in John Malkin's book. Some­ most of them flying A/1. Jorgen used to A main feature of the models is the times, the right airfoil to feature just fly Wakefield (he was on the Danish normal towhook, which we cling to. This jumps right out at you, like it did this team four times), but became tired of makes thermal detecting on the ground month. the greasy rubber stuff, and began to necessary if piggybacking is not possible. I was looking through an issue of Vol build and fly A/1 with his clubmates. When we presume the air to be good, Libre, after plotting the Gard airfoils a According to him, the competition in we launch very fast and 'zoom ' the few months back, when I spotted a their contests is as hard-fought as flying model off the line to the right side. three-view of Kosgaard’s Easy Max A/1 for the Danish national teams. Here's When the trim is correct, they will gain (predecessor to the Hot Max in the

AUGUST 1982 57 1.5 X 5 H.B.

a MODEL BUILDER Bob Hatschek shows off panic release of his homemade towline Internal mechanism of Hatschek winches . . . nice workmanship winch. Note folding handle and counter. is evident. three-view), and the ordinates for the wanted to have in a towline winch. His winch in the photos. I took pictures of a airfoil were also presen ted. The Kosgaard mandatory ones were: winch that was used all last year. . . this A/1 airfoil features the typical Scandina­ 1. adequate line capacity year’s version is going to be even better, vian pointed leading edge popularized 2. resistance to snarls, tangles, jams according to Bob! by Sigurd Isaacson. As Jorgen says in his 3. low friction and smooth running model notes, this seems to help. The (the glider must pull out the line) YOUNG FREE FLIGHTER OF section seems like it would make a nice 4. a panic-button release to be oper­ THE M O N TH . . . Ed Mate, )r. all-around rubber or glider section. The ated with one hand This month’s nomination for young maximum camber is far forward, which 5. comfort and convenience in use FF’er of the month comes from proud helps make a strong D-box section if (good grip, clearance for knuckles). papa, Ed Mate, Sr. (who is vice president desired. The 7% thickness is a good He also thought that these would be of the Illinois Model Airplane Club, compromise between the ultra-thin and desirable: a quick line reattachment; probably the oldest continuing club in thick sections. Try it! gear ratios that permit cranking the the country). Ed, Jr. is now a Senior class model UP in calm, DOWN in wind; a contestant, but has won the Coupe at HATSCHEK DOESN’T ONLY display of line still on reel; a fast rewind the Nats twice, along with a bunch of MEAN HOOKS ANY MORE! (without jeopardizing winching ability); other places. He’s done well at local Bob Hatschek brought along a few ruggedness, durability, corrosion resis­ contests, too. The Coupe design he’s goodies for my perusal when he visited tance, and dirt exclusion. showing off so proudly is of his own me in the hospital. Most of you out there Bob put these in the luxury class: a concoction. are probably aware of the fine Nordic reel lock, pocketable size; light weight; If you know of any deserving young towhooks he's been manufacturing an ability to install a pre-loaded reel for free flights who you'd like to recognize, (he’s sold about 750 of them!), but his spares; storage space in handle for don't be shy about sending in a photo latest bits of handiwork are some neat­ adjustment tools; and a lug for hanging and a paragraph or so describing his looking towline reels. Bob said he had on the belt. Bob pointed out that his accomplishments. But remember that enough Nordics ready for the upcoming goals list ignored such factors as low clear black and white pics are the only finals, so he’s spent some time in devel­ cost, ease of construction, etc. Once kind that we can p rin t. . . Polaroid color oping some new reels. (These reels are made, he considers his winches to be shots are a no-no! purely for his own enjoyment, and are priceless! Continued on page 94 definitely not intended for sale, he The first winch he made even had ball wanted me to make that clear.) bearings, which proved to be quite un­ Before starting the project, Bob listed necessary, as an A/2 easily pulls out the the capabilities/specifications he line even with plain bearings, such as the

Photo by Toni White, from Alberto Lozano Andy Tagliaficco concentrates on preparation of his outstanding P-24 ship for Albany contest. International contest in Mexico City, Oct. 1981. Antonio Abaunza with Nordic.

AUGUST 1982 59 The McCollum-Knoppi team racer. Wheel kinda disappeared during landing!

4 · $ ------— By "DIRTY DAN" RUTHERFORD ontrol line PHOTOS BY CHARLIE JOHNSON

• Say, quite a large and interesting Just picked up the May Model Builder like a Veco Chief is the ideal wind flyer. response to the column that made fun of (thank Cod they dropped that “ RC" It's big, light, close-coupled, and has the RC cross-country rally and that also stuff) and I want to be the first to sign on enough “ sail area" in the form of side hinted at a challenge from the CL guys, for the Dirty Dan Sea-to-Shining-Sea area and barn door wings. The more with us “ Rock on a string” folk wind­ Toy Airplane Rally Race and Trophy modern a Stunter is, the worse it seems flying a CL model from the back of a flat­ Dash. It could rival the old Car & Driver to wind fly. I suspect Combat models are bed truck, doing it non-stop and setting “ Cannonball" in fun, decadence, and similar, only worse, what with no real a cross-country record that the RCguys generally sticking it to the powers that fuselage and all. Side area seems to help. couldn’t possibly touch. As is usual with be. How about that; the cops, the AM A, My experience tells me that a wind flyer this kind of thing, the people who im­ the 55 mph speed limit, fuel economy, has to have enough area for the wind to mediately see the potential write in very glow fuel, engine markers, and the RC push it and be heavy (dense?) enough to quickly, Tom Dixon did so, and his was guys all in one fell swoop! A master­ penetrate into the upwind side of the easily the most entertaining letter. . . piece! circle. That's where I think your Combat Dirty, Actually though, a ragged old Stunter thin gies would let you down. They’ll probably make it through the tunnels better, though. If the Dirty Dan Sea-to-Sbining-Sea, etc. thing falls through, maybe we can promote CL flying with flying dog houses, lawn mowers, bathtubs I guess a flying hot tub would be needed in Cali­ fornia) or what have you. Maybe a Super Nobler powered by the biggest freaking chain saw engine we could find would be neat. Think of it, a ten-foot red Nobler flown on 7/2 inch cables. " And it sounds just like a real airplane” , as they say (Funny, I think it sounds just like a damned chain saw!). It seems the possibilities are nearly endless. Maybe RC stands for really conservative. Or relatively competent. Or repeatedly constipated. I don’t believe I’ve ever seen anyone in RC be creative to the degree CL people seem to be. Or funny, either. A word about this letterhead. You’ll note that it is " shrink" related. I am not Jarl Boles (Salt Lake City) launching for Myles Lawrence at Buckeye. the above person’s patient. I am he. Having to use up the stationery, 'cause I just moved out of my office. I am the 60 MODEL BUILDER same Tom Dixon of PAMPA,theGremlin in MB in '75, and the Stilares in MAN in '77. Haven't been doing much flying last few years due to lack of time due to work. Stunters just take so damn long to build right, and it's not worth it to build a bad one, hence little flying. I am hoping to get back into it more with a new group practice association which should increase both income and available free time during the next year or so. Please keep on being outrageous. It’s a real wonder Northrop lets you get away with it, but it’s good for him, you, and us the real modelers. Keep it up. Let me know when the Race Rally begins and where. I’ll be there with something neat to fly. If I could find someone with a Porsche 930 with a sun­ roof, it would be lough for you California guys! Keep thecolumngoing. .. remember us Stunt guys from time to time. Tom Dixon First off, Tom, you sound like a loyal reader, have even submitted a for-real CL article to MB, so are part of an elite group. Yet you have me living in Cal!! Man, I don’t live there, don’t even like 'It's a good idea to clean out your tool box once in a while." visiting the land of fruits and nuts, or at least none of it that is much south of The City (San Francisco, of course). Laugh if you want, at least a couple of us be to hook up a sidecar to an 1100 Suzuki Ahem. Although it only took you a are talking very seriously about actually or a 1300 Kawasaki, mounting the side­ flash of the eyeballs to get from up there doing it. In fact, I have spent more than car’s "chair” backwards, so the passen­ to this new paragraph, it has taken me a just a few dollars talking to Charlie ger could fly while seated and be fairly half cup of coffee and a few moments of Johnson about it, he lives in San Diego, well protected from the wind blast and thought. The coffee because it is good so we're considering laying out a pro­ in an easy position to communicate with and I likeit (freshgroundMapleWalnut, posed route, running it backwards from the driver. The sidecar would hold the believe that or not). The thoughts be­ SD in a car just to check it all out, then top speed down some, but we don’t cause everybody is always picking on making the mad dash back across the want to run at 130 mph anyway... SoCal, and do I really want to be part of country, wind flying a CL model from But we have to be somewhat practical, that, because it seems as if most of the the back o f . . . a vehicle, we aren’t sure as in using something that works, and people laying it on the Californians are what would work the best. A big tractor- that is also at hand or can be had cheap. those who deep down simply resent all trailer rig would be ok, but they aren’t No way are we going to spring for the good times they imagine the Tanned very fast, accelerate quite slowly and are several thousand dollars required to Ones to be having year ’round. Hey, I very easy to track with radar from great outfit a hot-rod bike, just for one cross­ don’t want to be tucked into a classifica­ distance. Late model Corvettes are country blast. Hmmm, the bad ’n nasty tion like that. So, .. . almost invisible to radar forsomestrange Dirty Jeep is only a short 140 mile trip To Tom and all, I live in the Seattle reason, not just because the body is away, kept as it is in the home of true area. And love it. Wouldn’t hardly even ’glass, as there is a lot of steel in them, Jeeping, Yakima, Washington. Look it up consider moving anyplace else. But I even in the roof, but how can you fly out in the Atlas if you don’t believe the also know that all of you people reading of one of them, aren’t they too much of a name. And you aren’t pronouncing it this would absolutely hate Seattle. It ticket-bait item and how can you find an properly. Correct pronunciation is rains here, you know. Buckets and emissions-equipped one that is faster "Yakima” . Got it? The Jeep is fast, even buckets, day in and day out. We don’t than a truck? Trucks are slow, but have without regearing it the camel will run a have hot tubs in the backyard, we have you ridden in a new 'vette lately? little more than twice its safe speed and arks .. . arks with built-in bilge pumps, For speed, a good, strong bike would it gets decidedly unsafe at around 60 as it would be a shame to have to load up be neat. Charlie has a CB900 that would the ark only to find it full of water. In be almost enough, but the trick would Continued on page 64 fact, our arks actually sparked the whole idea of hot tubs, a visiting Californian was here on the last day we had sunshine, it was a number of years ago, so nobody can remember the exact date, the bilge pump had shorted out a day or so earlier, letting the ark fill with water, the pump got very hot, but all that did was to heat the water. Our visitor jumped in, enjoyed the soak, flew back south the next day and kicked off another of the fads we always see coming out of SoCal. (Fresh ground what? wen) But the point is that none of you would like Seattle. So don’t come to visit. Don't ever consider moving here. Please. Trouble brewing and then happening, as combat lines get a little tangled. Myles Lawrence Gosh, what were we talking about? is down and trying to disengage. Oh. right, the race across the country. AUGUST 1982 61 CONTROL-LINE HEADQUARTERS

ENGINE: .29-.40 WING SPAN: 50-

KIT CL-21 $8.25 BANSHEE $42.50 Designed by MIKE STOTT ENGINE: .29-.40 ENGINE: .049 WING SPAN: 49" $26.95 MUSTANG STUNTER WING SPAN: 18- Designed by MIKE GRETZ BEECHCRAFT STAGGERWING Designed by MIKE STOTT

ENGINE: 10-.15 WING SPAN: 28"

ENGINE: .049 TWISTER WING SPAN: 22-1/2’ SHOESTRING Designed by MIKE GRETZ ENGINE: .29- 40 Designed by MIKE STOTT WING SPAN: 48"

AKROMASTER AKROBAT Designed by MIKE STOTT ENGINE: .15-.19 WING SPAN: 34" DEWEYBIRD Designed by DAVE SHIPTON

ENGINE: 29-.40 WINGSPAN: 51”

Designed by MIKE GRETZ

ENGINE: .10-.15 BUSTER WING SPAN: 24" , Designed by MIKE STOTT

$43.95 > ^ j SKYRAY Designed by MIKE GRETZ SUPER CHIPMUNK ENGINE: .049 Designed by MIKE STOTT ENGINE: .29-.40 WING SPAN: 23-3/4' WING SPAN: 53-1/2’

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PH 505 887 9342 110 S 6th Street RFO 1 RT 7 MONTREAL QUEBEC T A A Hobby Lobby 141 South Stale Road 7 OKLAHOMA Can Atr Hobbws KANSAS 2037 So 3rd Street NEW YORK PH 802 524 2715 POMPANO BEACH 3512 W Victory Btvd EMPORIA PH 6 1 6 6 8 3 0 2 6 0 BAIDWINSVILLE OKLAHOMA CITY VIRGINIA 5850 Goum Bl«d Ouest E l CAJON Trade N Hobbies Dayton’s Hobbws PONTIAC BaldwmsviHe Hobbws Campbell s Hobby House ANNANDALE PM 514 332 3565 Mike s Mode« Shop 2159 S E 9th St 811 Commercial RC Mobtaes 4 w GenesseSt 4459 N West 50 Model Masters Inc ST GEORGES. QUEBEC 229 East Main SARASOTA KANSAS CITY 921 Huron BROOKLYN TULSA 6920 Braddock Rd Le M ur du Son FULLERTON H A H Hobby Sales R/C HOBBIES ROCHESTER Brooklyn’s Model Masters House ot Hobbies POUND 1050 157 Rue California Model Supply 4121 S Tamtam· 5620 State Ave Track side Hobbies 1 X 7 Gravesend Neck Road 6914 E Admiral Place PH 41 8 228-1374 1056 South Brookhurst TAMPA LIBERAL 4ΙΘ Mam Street PH 212 339 9250 OREGON P O Box 444 SASKATOON SASKATCHN HAWTHORNE Farmers Sundries A Hobbies Miller s BAe A Hobby Shop SAGINAW BROOKLYN CORVALLIS RICHMOND Cofcn* Hobby Centre Chuck's Model Shop 4939 E Broadway 105 E Seventh Hobby Hut Tail’s Hobby Shop #2 D J s Hobbies Bob’s Hobby Center 105 23rd St E 14106 Hawthorne Btvd PH 813 248 3314 SALINA C 326 Fashion Square Mall 2835 Nostrand Ave 2025 N W Circle 3002 Cary St PM 2424683 LAKEWOOD GEORGIA Mr Hobby NR Kings Highway YORKTON SASKAT CM SAULT STE MARIE GRANTS PASS VIRGINIA BEACH Hobby Warehouse ALBANY Mid State Matt BROOKLYN Rail ’n Rudder Ra<«> Control Hobbws Pinnacle Hobby Shop Hobby Cratt Centers 4128 South Street Lowell's PH 827 3032 Walt ’s Hobby Shop 23 9 1 /2 S E H 39 Betts Ave 129 E Portage Av* »1 967 Providence Sq v*C LIVERMORE 1601 N Slappey Btvd SEDAN 7909 5th Ave UTICA HILLSBORO #2 62 Prmce*S Ann * < WHITFHORSE YUKON Hobby Haven PH 91 2 8 8 8 2095 Plane Crazy Hobbws Henderson * Hobbie* ELMSFORD Hillsboro Hobby Shop WASHINGTON Ken s R C Supply 1762 Fest Street ATLANTA 407 N Hooper Andy ’s Hobby Shop 351 East Main St 8 Tatchun Road 2441 Auburn BELLEVUE PH 4 1 54 43 5828 Atlanta Hobby Center PH 316 726 3784 36 Mam Street MILWAUKJE PH 667 4984 WARREN R C Model Shop LOMITA 6125 Roswell Road N E TOPEKA HUDSON FALLS Roy 's Hobby Center Proc Shop Hobbie* 14020 N E 21st St AUSTRALIA The Fty.ng Machine Model Cl ATLANTA Capital R C Hobbies G A West A Co 23044 Van Dyke 11008 S E Mam St PH 74 7 9914 BRISBANE QUEENSLAND 2441 S Narbonne Ave Planes. Trains A Thing* tnc 5839 W 21st 774 Lower D u Ave PM 503 654 4916 1 Block N ot 9 Mile BELLINGHAM Underwood 4119 MT VIEW 2969 G Cobb Parkway WICHITA MT KJSCO PENNSYLVANIA WYANOOLLE Hobby Hive (Graham *) The Hobby Warehouse San A n to n« Hobby Shop DECATUR Modeler Hobby Shop Hobby Workshop ARDMORE Stoner Hobby Center 111 E Mangolw St X Kingston Rood Sears Shopping Center Hobby House 94/ Park Lane Shppmg Ctr 145 Maple St The Bozzar Mali Ardmore Hobbies KENT PH 415941 1278 Oecatur Speedway KENTUCKY 195 No Bedford Rd 19 A Woods.de Ave ENGLAND PH AV 32355 Kent Hobby Cratt NORTH HOllYW O OO 130 E Ponce De Leon Av« BATH BOWLING GREEN MINNESOTA RICHMOND MILL Kent W Mal! 1343W Meeker LONDON N 76N P Μ K Modet Products ROSWELL Pete s Hobby Shop Wilson Hobby Trach RC Hobbws Henry J N«hols A Son Ltd BEMIOJI MOSES LAKE 11526 Burbank Blvd No 12 Tommy’s Hobbies 1224 In d o nota Ave 10440 Jamaica Ave RO 1 Bo. 262 X 6 H o d o *e y Road Hobby Hutch W iliam s NORTHRIDGE Highway 19 Brannon Square LEXINGTON ROCHESTER BATH Paul Bunyan Mall 1711 Pheasant ISRAEL Smith Brothers VALDOSTA X Cell Modets Inc Oan’s Crafts A Thing* Dick Wetzel's Hobbws BLOOMINGTON PUYALLUP REHOVOT 8941 Reseda Btvd 347 Eastland Shoppmg Ctr 24 Bur sen Street 514 E Mam St Jim s Hobby Shop Jolly s Hobbies A O a tts Fir grove Model Supply Tisarwy Rehovot PACIFIC GROVE North side Ptaza PH 606 254 2406 SYRACUSE PH 215 837 6681 7935 South town Center 10611 136th St East 70 Derech Yavne Space Age Hobby Center LOUISIANA Walt ’s Hobby A Craft BUTLER PH 912 244 6991 CRYSTAL PH 845 7675 1173 Forest Ave HAWAII BATON ROUGUE 4300 W Genesee St Eberle's Hobby Shop NETHERLANDS. ANTILLES Crystal Schwinn Cyrtery SEATTLE PH 408-375 4351 Hobby Towne UTICA 764 Pittsburgh Road CURACAO (Caribbean! HONOLULU 6324 Bass Lake Rood Webster Supply Co SACRAMENTO 3112 College Drive American Hobby A Sports CLARKS SUMMIT Curacao Modetbouw Hobbwtat ST PAUL 17818 Aurora Ave N Graph« Hobby House MANOE VILLE 2107 Whitesboro Street Taytor s Hobby World Esoeranzaweg 92 1423 Tenth Avenue Mac s Models Inc TACOMA 2610 Marconi Ave Mercury Hobbws. Inc PH 31 6 7 2 4 4 9 5 9 312 S State Si P O B o. 470 IDAHO 1322 N R«e Street BUI's Hobby Town SAN BERNARDINO Rt 6 Box 734A NORTH CAROLINA LANCASTER TWIN FALLS PH 612 48 96 06 0 14914 Pacific Ave PAKISTAN Harper s Hobby Shop MAINE CHARLOTTE The Flight Box Aero ironies Modet SuppN Co WORTHINGTON PH 206 531-8111 LAHORE 222 No G St BAR MILLS Science Hobbws Inc Lancaster Shoppmg Center 320 Locust Street Guy Manufacturing Company WALLA WALLA Hobby Land SAN BERNARDINO Marne Trams 2615 Central Av« LANSDALE ILLINOIS 100 E 12th Street Harley’s R C Engineering Center Schrader * R.C Spec Route 202 Ho«·* EDEN Penn Valley Hobby Ctr BELLVILIE PH 372 2963 Route 1 Box 277A Mam Btvd Gulberg 111 251 East 40th St W ATERVIllE Coke’s Ft* it A Hobby Shop 837 W Mam St West S*de Hobby MISSISSIPPI PH 509 5292618 PH 871763 SAN FRANCISCO JFK Hobby A Craft CJr In c Rt 2 Box 222 LEMIGHTON 2629 West Mam Street BILOXI WEST VIRGINIA Franciscan Hobbies JFK Mall PH 9 1 9 6 2 7 0 1 6 6 Carpenter Hobbws BRADLEY Chuck’s Hobbie* CHARLESTON 1935 Ocean Avenue MARYLAND GREENSBORO R0 3 Bo. Ill SUGES BARCELONA King Hobby Craft 50? Edgewatcr Gult Dr C-3 Fountain Hobby Center BALTIMORE Soorts A Hobbies Unlimited PITTSBURGH Muo i Paul Pastecchi SAN FRANCISCO 505 W Broadway PH 601 3886346 200 W Washington St Marconi’s Hobby Centre 2144 Lawndale Drive Bill i Watt ’s Hobby Shop CaMe Juan M arjgjU 26 The Hobby Company PH 815-935 1115 Eat. 12 JACKSON WISCONSIN 425 E Patapsco Ave Lawndale Shoppmg Center 116 Smithtwtd St 217 Sutter St A 5150 Geary CARPENTERSVILLE The PlayPen BEAVER DAM SWEDEN World Hobbies WALDORF HENDERSONVILLE READING SAN JOSE 4754 Mrway 55 North Park Electronic* Hobby Hut S871 0? HARNOSAND IA Lakewood Ptaza Shp Ctr Doug’s Hobby Shoo The Hobby House Iron Horse Hobby House Chuck Sheldon » Hobby Shop OXFORD 713 Park Ave Mode" Produkte» PH 312 428 4340 Waidort Shopper’s World 1211 Ashev.ne Hwy 60 South 6th St 3157 Akim Rock Creative Sources GALESVIILE Box 2060 SANTA BARBARA CHICAGO MASSACHUSETTS 1002 Jackson Ave HIGH POINT READING AMES8URY Bet nie’s Cratt A Hobbies Inc Ott’s Hobbws RC Unlimited Atkins Hobbies Stanton Hobby Shop MISSOURI 825 Park Drive VENEZUELA 4734 N Milwaukee Ave Goodwm s Photo A Hobby 2291 English Road 536 N 10th St 14 W Anapamu Street GRANDVIEW PH 608 582 2853 CARACAS 1070A CRYSTAL LAKE 30 Mam Street KING SLA TING TON SANTA MONICA Flo Mow Co MARSHFIELD Hobby World C A Frank’s Barber Toy A Hobbies BOSTON King R C Valley Hobbies t Collectible E vert’s Model Shop 700 Blue R>dge E«l Mid Wisconsin Hobby Center Aon «a Principal Boleila 111 113 North Mam Street Eric Fuchs Hobbies 0*d Hwy 52 102 Mam Street 1636 Ocean Park Blvd LEE’S SUMMIT Northaay Mall E d it« « Alta No 25 PM 8154590247 28 Fremont Street PH 983 3969 WARMINSTER PH 213 452 2720 Blue Mills Bike A Hike Inc 503 E Ives St Apertado 75054 BURLINGTON NORTH DAKOTA JC RC Hobbws SANTA ROSA DECATUR 229 S Main MENOMONIE Hobby Corner Erie Fuchs Hobbies GRAND FORKS 13 York Rood WEST GERMANY Toy A Model ST CHARLES True Value Hardware 737 W Pershing Road Burlington Man McGittms Hobbies Unlimited PM 215 672 5200 06092 KEISTERBACM 711 Coddmgtown Mall Mark Twam Hobby A Craft 1512 91h Street GLENVIEW EAST LONG MEADOW 1228 9th Ave S WAYNE Aeromj* RC Modelibau SANTEE 1355 S 5th MILWAUKEE BUI’s Hobby Supplies PM 701 772 5311 Hyatt Hobby House Am Gruenen Weg 2 Hobby Hangar Klipper s Toy* A Hobbies St Charles Shoppmg Center Casanova s Hobby 1314 Waukegan Rood 600 N Mam Street Gateway Shopping Center 9535 Mission Gorge C NEBRASKA W IlllS TO N 1423 S Muskego Ave PH 312 724 2040 PH 413 736 7711 RHODE ISLAND PH 714-4495656 C A C's RC PH 414 6 72 2700 CALIFORNIA (Foreign O n t i ELWOOD NORTH KINGSTOWN COLORADO MCHENRY FITCHBURG R R 1 Box 87C MONROE IRVINE Johnson Lake M ann# A Hobby Hobby Hut COLORADO SPRINGS The Hobby Hangar McMannus Hobbies A Novel Exportations Ltd RR 2 PO Bo* 43 7442 Post Road Hobby Chalet Custom Hobbws 5515 No Wilmot Road 633 Mam St West Ma» 128 W 8th 17835 Sky Park Circle *E 2813 E PtatteAve PH 3 1 2 4 97 31 03 PH 60Θ 325 4911 PH 714957 1331 DEALERS.' Write For Details On How Your Name Can Appear In This Column The Best Hobby Dealers Stock SIG - Order Catalog 4 4 For $2 - Complete Line Of Kits And Accessories SIG MANUFACTURING CO...... Montezuma, IA 50171

AUGUST 1982 63 this, don’t expect an announcement here or anyplace else! Only a very few people will know The Plan, for obvious R O M AIRI TORQUEreasons. TUBE No sideshow stuff in all of the / AILERON LINKAGE towns, we will be honkin’ the whole These strong, lightweight TORQUE TUBES are easily way, watching the radar detector and installed in foam or built-up wings. Rom-Air Torque Tubes will listening to the CB. But if you have ideas for us, or want to assure the most positive, solid aileron control ever, no more get involved, let me know, as Charlie flexing piano wire, no more trim changes caused by and I don’t plan on it being a two-man high or low temperatures, f"j. show, in fact we will definitely be needing some help with flying and driving chores. Write to me in care of Model Builder, or direct at: Dirty Dan, Inc., 4705 237th PI. S.E., Bothell, WA 98011. (As a trusty at the funny-farm, Dan has no trouble getting home to pick up j LIGHT ENOUGH FOR THE his mail on weekends, wen) · Λ -SMALLEST R/C SHIP, STRONG ENOUGH FOR THE MOST POWERFULL Futaba . . . Continued from page 23 - PATTERN SHIP! Available m & jfo u r local dealer or order direct. on all three primary flight controls. This permits one to adjust for same rate full stick manuevers in both directions, desensitize down elevator, and handiest of all, you can adjust any of these controls for the desired throw without having to change holes in either the servo or control horn. In fact, with a Control Line .. Continued from page 61 ever done it before, somebody probably friend working the screwdriver adjust­ should. Unknown factors include hu­ ment, you can adjust these controls for mph, what with a small-block Chevy man endurance, as the model will be optimum while in the air. pushing and pulling a chassis designed tugging away constantly. Maybe we "ATL” , the Adjustable Throttle Limi­ for a teeny little four-banger or that should get John Ballard, Iron Man of the ter, is operated by the normal throttle effectively put a red-line of about 45 Racing Circles, signed up as a pilot. And trim lever, in this case being effective mph on the running gear. So that's out, we really don't know howwell theflying only on low throttle position. This don’t want to run off into the woods in will go at night. Sure, the model could simplifies throttle installation and adjust­ the middle of the night. Honest, officer, be flown without watching it, neither ment, in that you only need to make a a deer ran right out in front of me. . . Charlie nor myself would have any mechanical adjustment in the high We could take the back doors off the problem there, at least for short throttle position, then adjust the idle or Ford van, I suppose, mount a nice seat stretches. When fatigue and lack of cutoff as desired with the lever. back there (anybody want to kick in with concentration set in, we might find the Power for the “ G” Series transmitters a new model Recaro?) to do the flying model being dragged along the road as is furnished by the normal complement from, but again, the problem of speed much as it would be in the air. Of course, of eight 500 mah capacity/Ni-Cd cells, comes up as the van is equipped for laid- those over-passes and tunnels would be for the total of 9.6 volts nominal. Current back trips, not cross-country blasts. That real interesting, especially the tunnels. drain is stated to be 150 milliamps, which 300 inch six is a nice truck motor, but Not because we couldn't fly the model ought to make it safe for three hours speed is not one of its strong points, the within the confines of the tunnel, but plus one landing. Charging is done via a motor noticeably straining at a cruise of because you would have to fly it precisely one-prong connector located on the much over 75 per. in one traffic lane, directly behind the lower left hand edge; a dual 15-hour But these are relatively small prob­ tow vehicle. Imagine a two-lane tunnel, transformer type charger is furnished lems, a proper vehicle can be found and semi truck going the other way and us which may be used independently or outfitted, we know a model can be wind flying a model in his lane. Maybe we simultaneously with the receiver battery, flown from any fairly stable platform, should just cheat a little, either avoiding There are no power output figures there are several routes to take in getting tunnels or carrying the model through. furnished, though our flight tests prove coast to coast quickly and as nobody has Anyway, if and when we actually do conclusively that it is adequate for all normal flying. This transmitter also includes some­ thing we are beginning to see in the MOVING TO SOUTHERN CALIFORNIA? Japanese made radios . . . fuses. You'll have to take the back cover off to spot it, MAKE SURE YOU GET A HOME but it is otherwise easy to find, being WITH A MODEL WORKSHOP ! ! located right on the P.C. board, about a third of the way up on the right edge. It is FOR ALL YOUR REAL ESTATE NEEDS, rated at 3 Amps,the American equivalent CONTACT: is a Buss GMA 3, available in electronic ANITA NORTHROP stores and possibly some auto parts houses that cater to imports This fuse is not mentioned in the manual, I can only speculate as to the reason it is there. Ms Naturally, it is going to provide normal NORTHROP fuse-type protection to the rest of the circuitry in case of a component break­ Rea/ Estate m down in such a manner that it draws excessive current. Another thing it will 621 West 19th St., Costa Mesa, California 92627 (714)642-5062 do is blow if any type of fast-rate charger

64 MODEL BUILDER ANOTHER MODELER-DESIGNED ACCESSORY FROM. . . New Improved Glass-Filled

Alignment marks, 4 at Nylon Engine 90" locations Mounts Pre-drilled engine Thru-drilled nose gear mount holes (4) holes, vertical and 90'

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P /N 2 0 0 - 0 6 2 ...... K M -1 9 P/N 200-063 ...... K M -1 9 B Side-mounted Round design to nose gear P /N 2 0 0 - 0 6 4 ...... K M -3 0 Engine mounting facilitate installation, installatioa P /N 2 0 0 - 0 6 5 ...... K M -4 0 screws become P/N 200-027 ...... K M -6 0 A self-locking in specially even in small spaces P/N 200-068 ...... K M -6 0 B compounded material Kraft Systems · 450. W. California Ave., Vista, CA 92083 · A Division of Carlisle Corporation

NOW FEATURED AT YOUR LOCAL NEIGHBORHOOD KRAFT DEALER is plugged into the transmitter, which is would not be possible with the “ grab the small top-of-the-board mounted types not equipped with such types of cells. transmitter” method. It is a great feature now beginning to show up in R/C The symptom of a blown fuse is no when you need it, though admittedly equipment. The receiver is quite rugged reading of the meter, and of course, no you might not use it much. For example, mechanically, being compactly built on output. If it goes west while you are I recently had the pleasure of teaching a a heavy two-sided, plated-through hole trying some charger other than the young beautiful blonde girl to fly ... I board. one furnished, you are probably safe to never once mentioned "Buddy Box". . . The specs list a sensitivity of install a good fuse and go fly, but if it sometimes the old-fashioned ways are 3kHz/-3dB, and further give a range in a goes otherwise, I would be reluctant to best! manner not previously seen: 550 yards just replace it and take-off, there has to For those so inclined, the "G” Series on the ground, 1100yards in the air. One be a reason. At least operate the trans­ transmitter is equipped with a heavy lug would assume that this is w ith the mitter on the ground a number of times between the swtich and the meter, right companion transmitter, but this cannot for periods in excess of your normal at the CG, to which you can connect the be an absolute figure, as there are too flight times. furnished neck strap. A collapsible stand many variables to a system's range. In The top located switches are all is installed on the back, to hold the actual practice, we flew the system in a equipped with physically different transmitter upright when desired. five-foot model, to an overhead altitude levers, so that once you learn their as high as we could and still see it to location, you can operate them by feel RECEIVER maneuver, then started collapsing the without having to take your eyes off The FP-R7F receiver is of medium size, your airplane, which is certainly not measuring 1.5 x 2.4 x 0.8 inches, and recommended. The last one not yet weighs 1.6 ounces. All of the connec­ mentioned is the one that operates the tions are made through board-mounted Trainer, more commonly referred to as plugs on one end, there are no pigtail the “ Buddy-Box” . This is a training harnesses used. The plugs are the stan­ system during which two transmitters dard, older Futaba connectors, not the are used, connected through an umbili­ newer type as seen on the ")” series. The cal cord which plugs in right under the plastic two-piece case is held together charge connector. In use, the Instructor with two self-threading screws on one can transfer control to the student by end. Electronically, the receiver is rather Nick Ziroli's AT-6 ” TEXAN” pressing the spring loaded switch, im­ For 2 to 4 Cu. In. size Engines mediately regaining control any time he standard design, crystal controlled, A Fiberglass Fuselage & Cowling is available for the AT-6 design wants it by simply releasing the switch. double-tuned front end, three stages of GIANT R/C SCALE PLAN DESIGNS In my opinion, this is the best method of IF am plification at 455 kHz. It does AT-6 TEXAN 2.4' = 101 Spon $27 00 p.p U S A FOKKER OR-1 2 .7 ' = 63 Trip· $25 00 p.p U S A. teaching R/C flying ever devised. It not contain what appears to be a ceramic FRF BEARCAT- 2’/«* = 86 Spon $27 00 p.p U S A CURTISS P-40' 2 % * - 94 Spon $27 00 p.p. U.S.A. only gives both instructor and student filter, and an extra set of shielded RF F4U CORSAIR 2 % ' = 93 Spon $27 00 p.p. U.S.A. Fiberglass Cowlings & Canopies are available also Send a much more confidence, but it actually coils, probably for additional front end stamp for detailed brochures on our Giant Scale Accessories allows some last-minute saves when you amplification. The decoding chores are ______(Our Plans are sen! Postpaid within the U.SAJ______finally get around to landings, that handled by one 1C, of the extremely NICK ZIROLI 29 Edgar Oriv». Smithlown. N.Y. 11787

AUGUST 1982 65 stick. A t last) A trainer that doesn't look T h e like the box that it came in. 2—3 ch. The airborne weight of the "G " Series model looks like a vin­ AirScout is 12-1/4 ounces, less servo trays, which tage aircraft. Flat bottom may or may not be used, depending on airfoil makes for a stable ^ruly a Trainer ! your choice and installation. flyer. Considering that this is not a rank beginner’s system, the instruction book Wing Span: 54" is excellent, with the already mentioned Wing Area: 490 sq. in. exception that there is no reference Weight: 50—58 oz. made to the fuse. This could lead to an Engine: 15—25 cu. in. unnecessary trip back to the repair No. Channels—3 facility. The manual does not contain 50K214 AirScout basic R/C flight and control information, but bear in mind that this is not a $39.95 beginner’s radio. It does contain every­ R/C, Inc. thing that a relatively experienced flyer 21 will want to know about his system, Designed by Owen Kampen LLE. MO. 64037 including all installation, charging, pre­ flight instructions, and explanations of not much different from the better the various switches, controls and their known but older S-16, for which only use. The illustrations are crisp and clear; 27.8 oz. in. is claimed. The literature even an exploded view of the servo is credits some of this performance to a shown, for those who like to do their custom power-saving IC; it does not own maintenance and parts replace­ utilize a core-less motor. ment. The S-26 weighs only 1.7 ounces. It has The warranty, for which you must a standing current consumption of 8mA return the enclosed card within ten at rest, 80-100 during steady unloaded days, is for 180 days, "against defects in running, and don’t at full stall. material and workmanship.’’ This is PACESETTER Mechanically, the S26 is extremely average and fair in the R/C world as V* SCALE SPRINTERS rugged, being molded of a fiberglass technology now stands. With rareexcep- filled material referred to as PBT-Poly tions, any new radio that has a "defect in KITS START UNDER $400.00 Butylene Terephthalata, with fairly thick material or workmanship” will let it be Factory Direct.For additional information send $1.00 for brochure to: ■■■ sides. The gear train is smooth and tight, known long before 180 days. with little backlash, operation in the FLYING P A c r s r r T c x .s& S a system is precise and accurate. The pot is At last comes the fun, that of getting Garner Valley Box 257 PRODUCTS indirectly driven; that is it is not directly the "G " Series in the air. As it is the Mountain Center,CA. 92361 (714)659-2318 attached to the output arm, and thus is wrong mode for me, which I can fly but not subjected to the strains imposed compound the problems when things antenna one section at a time. We did back on it by the pushrod and control go wrong, I decided it best to get a co­ this until we had it down to one section, surface pressures. pilot. God being busy that weekend, I boresighted it at the model, all the time Timing of the S-26, like most Futaba nad to settle for my good friend, skilled with perfect control. There is no doubt servos, is 1.31 mS neutral, plus or minus Mode Two-er Col. Bob Thacker. We did that this system has more than adequate .5 mS for full movement. This makes it all the flying in one of MRC’s ready-to- in-the-air range. compatible with all Futaba E through FI, fly .35 powered Cessnas, which is an Power for the receiver is the usual 4- and L Series R/C systems. excellent flyer, and agile enough to put cell, 4.8 volt Ni-Cd pack which it shares GENERAL the "G ” series to a good test. with the servos. The current drain of the The Futaba “ G” Series is available on The installation was no problem; receiver alone is 12mA. AM only, on all 27 and 72 mPlz frequen­ neither would it have been in a plane SERVOS cies. Though no mention is made of with half that fuselage space. The fateful The standard servo of the “C" Series is modes, and all of the literature refers day finally came, we rechecked for the /ball-bearing equipped FP-S-26, for only to Mode Two, it is available as proper control movement, fired up the which the rather surprising output Mode One, but it must be ordered as Enya, and Bob took her up there where torque of 43.1 oz. in. is claimed. This is such. This is not a transmitter that can be she belongs. impressive moreso as it is not particularly easily modified from one mode to The "G ” series performed in a manner large, being only 1.6 x 0.8 x 1.6 inches, another. Nor is it available as a single to make them happy all the way back to Japan. We flew it under normal condi­ tions of throw and with full antenna, then high up and antenna down. Not a single momentary loss of control! We DELTA R/C Race Cars flew it further, testing and setting the dual rates, one at a time, then put in, *1 :8 World Champion Gas Super-J adjusted, and flown with the aileron and ♦ World Champion Picco 21 Racing Engine rudder mixed. The only functions we *1 :1 2 Electric Phaser 120 didn’t try were the rudder/elevator *1 :1 8 Electric "Pocket Rocket" mixer, and the buddy box. Then weflew it just to fly it. Throughout it all, the We manufacture the most complete system worked flawlessly, we both liked line of gas R/C race car accessories. it and soon were rid of the "new radio” We manufacture competition oriented jitters. 1:1 ^electric race cars and accessories. PRICE Send $1.00 for catalog package Comes the bottom line: seven channel at $399.95; six for $369.95, and five for DELTA Mfg., Inc. $349.95, recommended retail prices, 27 Racecar Court, Lorimor, Iowa 50149 though a little judicious shopping will USA______Phone: (515) 763-2220^ shave quite a few bucks off those figures. Compared to other systems in that price 66 MODEL BUILDER range, and keeping in mind the overall but Carl did teach us kids how to fly high quality of this system, I am of the controline models in the school stadium opinion that it is fairly priced, and well field. worth the cost! · Later on, Carl sold me a new Ohlsson and Rice 23 plus a Fireball kit, which flew Plug Sparks . . Continued from page 45 just fine. Still later, in 1946,1 put the O&R 23 in a Playboy jr. and became intro­ described as “ Rich” (sluggish and cool), duced to free flight. Encouraged, I also “ Normal" (correct and reliable), and made a Piper j-3 with an Atom 09 for “ Lean” (sensitive to temperature, hot, power. and unreliable). Operation of the gas I can’t say how much I appreciate the needle valve was outlined stating that a 1946 green, hard bound cover edition of "4-cycle" running could be obtained by Bill Winter's "The Model Aircraft Hand­ screwing the needle valve out, pro­ book". From it, I learned all of the ducing a considerable amount of smoke. hobbycraft and used his tips to build and On the other hand, screwing the needle fly with good success. valve in produced extreme speed with a I have been reading your Plug Sparks very clean exhaust. To this writer, it is and enjoy the photos and accompany­ (MMarøOffl OD amazing that 45 years later, many model­ ing writeups so much. The column ers still don't know the difference!! refreshes my memories of the contests Everything an engine should be. Performancewise, claims were made out at the old Chicago Municipal Air­ Smooth, powerful, easy starting, for 500 to 7500 rpm using the "Tom port. We only flew on weekends for the light and reliable. Backed by sport of it, helping each other, swapping Thumb” propeller. However, these Homelites 1 year limited warranty. figures could vary considerably depend­ equipment and stories. We had to, we never had much money then! Engines come complete with ing on the skill of the modeler carving mount, choke. Talone muffler and the propeller and the particular airfoil In your articles in the magazine I see the same sort of idea coming around in precision 6 bolt hub. and shape of propeller selected (as­ Nothing comes close. suming 12 in. diameter was maintained). the form of " No-Contests" or "Un- The Tom Thumb specifications were Contest" meets. Everytime I look back very slightly different from the 4ighty on why I quit the hobby, I was led to Midget, with a 7/8" bore (instead of believe it was on account of my home­ 13/16") and a 13/16" stroke. Flying work getting to be too much. However, weight probably with two standard after being in the service in the fifties, I flashlight batteries) was listed as 18 found the reason was high pressure (gotta w in!) and increased costs of ounces. SPECIFICATIONS: Like the Mighty Midget, the Tom contests. This does not take in the 2.5 cu. in. Thumb engine was made of steel with agitation of changing AMA rules, con­ Engine weight 4 lb. 6 oz. aluminum alloy crankcase. Surprisingly, troline and free flight events turning Solid state ignition the head was of lead, presumably for into hot dog events. It all caused me to Roller bearing at flywheel walk away. Ball bearing at rear better heat dissipation. All bearings Hemi-head chamber were bronze, SAE64 specification. The Now, SAM is here. I need the nearest Schneurle ported coil was the standard Bunch coil, sup­ Chapter in my area. I’ll try again. To that, 2 pc. con rod—bearings plied with a Bubulier condenser. this writer says, good man! Chrome plated cylinder The Tom Thumb engine was no Magnesium case ANOTHER “40 YEARS A G O ” . .. Balanced crank “ hokey” engine like the later "slag” From Skip Paplow, Box 91, Upper Pyramid reed intake engines that followed in the early forties. Lake, California 95485, comes word that Built-in choke However, wit h the closeness of design to a former record holder, Don Lampson, is nn Height 7.25” the Mighty Midget, the Tom Thumb alive and well, and hoping to hear from S279.00 retail Width: Shalt center to engine really offered nothing new widest point: 3.0" some of his old flying buddies. See Total Width: 5.25" except for the highly regarded C-D Photo No. 8. emblem, a symbol then of good quality. Mounting plate to prop: 6.0” Don started modeling in 1938. He built See it at your local hobby shop. Around 1938, Bud Warren took over several free flight models including the the Tom Thumb line of engines that Quaker Flash and the American Ace. He’ll order it if not in stock. were stockpiled in the Bunch manufac­ At Woodland, California, on April 27, CONTEMPO HOBBY PRODUCTS turing plant. With on-the-field demon­ 1941, he set an official National Class B, 11611 CANTARA ST. · NORTH HOLLYWOOD. strations and good publicity, Warren R.O.G. endurance record of 14 minutes, CA 91605 was able to maintain a steady flow of 13.6 seconds with the American Ace. sales until the outbreak of WWII. At the Engine was a Forster.29. The timer was in close of WWII, the engine was never the cockpit. interest in old time free flight, Don says if produced again, as the newer designs With World War II looming, and the he could get plans for the American Ace, had passed it by. draft getting closer, he decided to follow he might just start building again and THIRTY YEARS AG O , I W AS... in his father's footsteps and learn to fly. take a shot at Taft. This columnist is pleased to acknowl­ He and his brother, Chester, purchased Don was born February 2, 1910. That edge a letter from Mathias Vols, 3754 a 1936 Piper Cub (40hp) and each logged makes him 72 years old. He looks about Edmundsen Road, St. Louis, Missouri 150 hours. 55.. . disgusting! He says he would like 63114, wherein he recalls the days when With his new flight experience, Don to hear from some of the old timers, he just became a modeler. Here’s what spent the war years as a flight instructor maybe someone who was at Woodland Matt says: for both the Army and Navy reserve. on the day he set the record. His address I started modeling in Chicago at Carl After the war, Don and his brother and phone number are as follows: Don Goldberg's store on Western and built the local airport in Lakeport, Cali­ Lampson, P.O. Box 968, Lakeport, CA Addison Avenues, across from Lane fornia. It is still known as Lampson Field. 95453, Phone: 707-263-5859. Technical High School, in 1944. I joined Don sold the airport and quit flying in We sure have some nice flying sites the club Carl had organized called the 1972 when Chester was killed in a crop here in Lake County. The lake itself " U-Liners". To get me started, Carl sold dusting accident. (Clear Lake) is 20 miles by 8 miles at its me an old blue staggerwing biplane with Since talking to me, and looking over widest, for seaplane types and boats. a Forster 29. The model was a real dog. some of my magazines, and seeing the Also, there are a couple of small aban-

AUGUST 1982 67 prints, in the form of soft bound books, ASTRO CHALLENGER COBALT MOTORS nave been extremely useful for refer­ ence work. His latest, the reprinting of SUPER POWER FOR WORLD CLASS COMPETITION all of the old engine catalogs and in­ structions sheets, have been invaluable to those wanting an absolute N.I.B. (new

We Dull! o ur first cobalt m otor in 1975 for our SOLAR-powered in the box) engine with all pertinent unmanned airplane SUNRISE. The SUNRISE m otor weighed 16 instructions. ounces and produced 3/4 HP Last year we built the SOLAR Although this notice will be a little late PROPULSION SYSTEM FOR THE DUPONT SOLAR CHAL­ those wishing to express their condo­ LENGER that made its historic flight from Pomtoise. France, to Manston. England, on July 7 1981 The SOLAR CHALLENGER lences may write to the Suhr family, COBALT MOTOR was only three inches in diameter but W218 N5866 Maclynn Ct., Menomonee delivered almost 3 HP" By using this advanced technology Falls, Wisconsin 53051. Surely all cards we bring you our new ASTRO CHALLENGER CO BALT will be appreciated. MOTORS, super-performance motors for the serious 1 competitor, for the modeler who demands the best and TOWLINE GLIDERS simply wont settle for second best The heart of these motors is the new. high-energy, rare-earth COBALT Mark Fineman at 73 Charlton Hill, magnets They supply much higher magnetic flux and are Challenger 05 .... $75.00 Hamden, Connecticut 06518, writes to not damaged by overloading To efficiently utilize this say his Eal Stahl Schweitzer TG-2 as magnetic potential we have incorporated (1) a high-grade Challenger 15... $100.00 silicon steel armature lamination. (2) a high-performance Challenger 25 . . . $125.00 shown in Photo No. 12 is a real honey. com m utator capable o f running at 35.000 RPM and 350° F . and Challenger 40 . . . $150.00 He built the model primarily for SAM (3) a new silver graphite cartridge brush that can safely O/T Towline Glider events and it just so com m utate 25 amperes The net result is a really super-power Motors made to order.Please happens SAM 7 is running the SAM motor that is ready for world class competition THE NEW allow 30 days for delivery. ASTRO CHALLENGER COBALT MOTORS — NOTHING ELSE Send stamped self addressed Champs this year and will be offering the COMES CLOSE!! envelope for specifications to: Towline Glider Event. Mark hopes to cop a trophy at the O/T Nats. RSTR0 FLIGHT Couldn't resist sticking in another inc nostalgia picture of Hi Johnson as shown 13311 BEACH AVENUE VENICE, CA 90291J in Photo No. 13 with an original glider that was a twin to that of his flying buddy where I tried it out with floats. What a (forgot his name). dream on water! I found that the con­ Hi was always partial to gliders, trols (elevator and rudder) on radio whether they were model or full size. control are very touchy. But, it is great to fly around on half power!” H O T STUFF REVISITED We had no sooner finished titling the Trust those enterprising Hunters, Bob above photo, then we received several and son. Bill, to come up with the latest old time photos taken by Cedric idea to help modelers find a better and Calloway, 14624 Willow St., Hesperia, quicker way to build models. Bill Effinger's Classic Design: California 92345, of the old flying days at Just received, reviewed, and had the SNOW WHITE “ 2 0 ” Burbank Airport in 1937. Photo No. 10 various clubs up in Northern California Joo Raspanle's bcautitut model ol SNOW WHITE won every see the hour plus long tape showing Bill beauty contest entered m late 1930 s Featured in Charles shows the original Don Donahue Five Grant'*, Model Oosign textbook This 3/4 si/o version is pertect as the commentator and Bob actually loi modern R/C flying We've had many, many requests lor it Foot Gas Model (later bought by Owen For .15 to .35 Engines. 3 to 4 Chonnol R/C Systems Chapman) at the Burbank lineup. The constructing a wing is less than ten 68' Wingspan ... 700 Sq. In. Wing Area ... 4V, lbs. reader would do well to compare the minutes before your very eyes. Very Full Sue PLAN N PATTERN SET RCFF 7 $14.95 impressive! Prices are for Complete Plans. Sub Assembly and models. Bob did a masterful recreation Detailed Parts L»sts Add $2 00 for Mailing Tube of this particular design! To get this film, simply write to Satel­ DetAiK on new designs & great things to come lite City, P.O. Box 836, Simi, California Send $1 00 (retundablo) for more information While on the subject of old time photos, we had skipped the monthly 93062, or better yet, call at (805) 522-0062. W.E. TECHNICAL SERVICES There is a $30 deposit, refundable upon ______Box 76684-B Atlonto. Goorgio 30328______picture from Bruce Lester in the last issue, and in its stead we had a photo the return of the film. If you like the tape doned airports for the majority who fly from Art Suhr, who in turn had inherited well enough, Bob says, "Go ahead and landplanes and sailplanes.. .and several this from the Bunch Co. make a copy. We want to spread the good U/C sites. Photo No. 11 shows Louie Shocke with word." I myself have permission to fly at the his first gas model powered by an early SAM NEWS local high school, which is only about a Atwood engine. Note the resemblance East Coast SAM V-P Everett "W oody" half mile from home. (I sure don't abuse of this large engine to the later Atwood Woodman at 223 Longview Drive, Bay- the privilege.) All I have to do is get out Bullet engine. ville, New Jersey 08721, writes to say the Nobler or Flight Streak and go flying Louie used to come up with the L.A. activity is very high in their area with (when the weather is good). Skip Paplow boys all the time to compete in the big nine O/T R/C meets scheduled. At MAIL BAG Sacramento State Fair meet. He finally present, the contest committee is work­ Received a most interesting picture in won the flying scale event three times in ing on a combined awards banquet at the form of Photo No. 9, from Col. Bob a row and won the scholarship award the end of the season for all SAM Thacker, 1703 C alle M aria, San put up by Boeing at this time. Never did Chapters. Clemente, California 92672, showing his see Louie after that. Any guesses out To show you that Woody is still active. latest old timer creation, a Don Donahue there? Photo No. 14 shows his latest project, a Five Foot Gas Model as featured in the OBIT NOTICE "gussied-up" Comet Clipper MKI with 1936 Zaic Year Book. Just received the word from former wheel spats and cowling. Neat! Also As the “ Kunnel” sez, “ I waited 45 MECA District II Coordinator, Dick worth noting is the ignition Super years to build one of the most beautiful Dwyer, that one of the more respected Cyclone in the nose. This ground swell flyers of all time. At 3-1/2 lbs. dry, O.S. 19 engine collectors, Art Suhr, died of a for the use of ignition engines is a very power, polyester dress lining for cover­ heart attack about a week or so after the noble idea, but fellows, remember how ing with Coverite “ Quick-Stick" . . . it's Toledo Weak Signals Trade Show. you got started with glow motors. Don’t great! I used three coats of nitrate dope This comes as quite a shock to most of make it too tough for the newcomer to followed by K&B blue epoxy with every­ the MECA members, as Art Suhr has get into the fun. thing painted with K&B clear. been most active in preserving old Woody also announces the revival of “ Just got back from Lake Elsinore memorabilia on old engines. His re­ the “ Over the Hill Gang” , Chapter 37 in

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AUGUST 1982 69 STERLING MODELS' central and south New Jersey. Several combination of admiration and frustra­ organizational meetings have been held tion. How can anything that beautiful fly Priced Right For ’82 and 25 members have resulted. They are so good? looking for new members to help bolster ”Real Sporty” O/T interest. Call Woody at (201) NICKNAMES 269-0807. Manford Helwig of 762 Cleveland SAM 35 ENGLAND Ave., McMinnville, Oregon 97128, writes to ask if I saw Joe Konefes and if he Received a letter chockful of news from the English sparkplug, Dave Baker, remembered him by the nicknam of 22 Ellington Rd., Muswell Hill, London "Man” . This title was hung on him by N10, and was absolutely amazed at the Chuck Hines, hobby dealer in Des stunning progress made by SAM 35 or Plaines, Illinois where the Sky Wolves MAC was born. SAM(E) as they are gradually becoming Incidentally, Helwig claims this is to be known by. Dave writes to say: Kit: FS 38 where the pull test and other associated After the initial push to get started Wingspan: 40-5/16 controline safety rules began. "Chuck, with SAM 35, we are now on course with Russ Weber, and I were the first place Scale: 2-1/8" = 1 a paid membership of 440 (!!) and still Price: $45.95 growing. I used to think the limit would winners in the first ever Controline Contest held in Garfield Park in Chicago For: Radio Control be 100-300 members top but now any­ Control Line (.15- thing is possible! in August, 1942. This meet wassponsored .25 Engine) The major breakthrough for old- by the Times Air Cadets, hence, the meet was published in the Chicago timers is Alex Imrie's O /T column in Times via their reporter, Maurice Aeromodeller and lately the participa­ Roddy." Anyone else remember this tion in the prestigious Model Engineer meet? Exhibition. We are now in the situation that the parent modeling organization, THE WRAP-UP S.M.A.E., has been giving us attention to This month we have some food for the point a joint effort is scheduled at thought in some ideas proposed by RAF Odiham in the form of a pre-1950 Harry Murphy, newsletter editor of the event for Wakefields. C.I.A. Informer. Harry wants to know The exciting part is that for the first why the cutoff date for old timers is still Kit: K7 time in many years, we will see judge, at December 31,1942, when there are so Wingspan: 33" Copland, Warring, and Dubery lining up many good ignition powered designs with the not-so-well-knowns. (Note: Price: $24.95 available that most of us are acquainted How about that for getting the old with. For: Radio Control timers out!!) Control Line ·°·*9 enS· Harry claims the present cutoff date Full credit for our terrific expansion chops the total ignition era nearly in Free Flight (Rubber should begiven to Ray Alban, our Chair­ half; i.e., if you consider the spans o f'34- Power) man, Peter Micher, our Treasurer, and '42 (8 years) and '42 to '50 (8 years). The Don Knight for the bulk buying service. demise of the ignition engine occurred Of course, without our President Alex about 1950; hence, the second half of PENNY Imrie, the movement would not be ignition powered flying remains without where it is now. (Note: How about SAM proper recognition and sponsorship. PINCHER on a bulk buying service. They have the Now that the Nostalgia Event is pick­ Wingspan: 13" best and most comprehensive insurance ing up momentum for designs of early CHOOSE ANY ONE OR ALL SIX as a starter.) glow models from 1949 to 1957 (another HELLCAT CESSNA 180 The SAM 35 newsletter is profession­ 8 year span!), this brings out the appar­ MUSTANG SABRE JET ally printed now and features on the PIPER CUB T38 THUNDERBIRD ent conclusion, the postwar year designs cover one of our Hall of Famers like Col. are orphans. C.E. Bowden, Bert judge, C. W. W. Harris, As expected, there is opposition to Dr. Fostore Lawrence Spárem, not to this idea as there are those who point mention upcoming Bob Copland, out that pencil bomber types such as the $1.98 Howard Buys, Ken Tansley, Leo Hornsby, Civy Boy, etc. would dominate. Al­ EACH etc. We also need a few from your side of though their competitive superiority the pond. For mail order from an auth­ over Zippers and Sailplanes is question­ The plan situation has been solved by able in my opinion, for the sake of argu­ orized Retailer, send $1.98 for a plans bank by Dave Baker. All contri­ each Penny Pincher plus $1.00 ment, I'll agree their point is well taken; butions are carefully saved and copies minimum Shipping. Add $1.50 pencil bombers are a no-no. for more than one kit. made available to all SAM 35 members. Now, if their argument against the use What a great time to be in England now with all this feverish O/T activity!! of pencil bombers is correct, then could Catalog Request the real problem be the deletion of the Catalog of entire line of airplane Dave sent several photos to show O/T control line model kits, R/C scale progress in England. Photo No. 15shows cross-section requirement (L2/100) from A Trainer Kits, boat model kits, an English rubber design called “ Flying the 1941 AMA Rule Book? A random accessories etc. $1.00 enclosed. Minutes" as designed by Norman Lees survey of post-1943 ignition powered Secrets of Model Building A Con­ and built by Brian Yearley and taken at designs discloses that a surprising major­ trol Line Book - .50 each. R.A.F. Watton during an O/T competi­ ity still honor the 1941 cross section rule. 1st Class mail delivery, add $.50 tion. Performance comparisons to earlier U.S. A Canada. Air Mail to Brian does such excellent work, his designs would be most difficult to other countries add $1.65. models either win or place in their class measure. Send To: STERLING MODELS at Model Engineer Exhibition. To top it On that basis, could you argue an 3620 "G" St., Phila., PÁ 19134 off, his models fly well enough to win Eagle Vagabond, a 70" wingspan Playboy, Name ______two contests after winning the premier a Modern-Aire, or other late designs Address ______Aeromodeller Cup for construction! would be more potent than our present Dave Baker is acting as timer in the standbys? Just think, a rule to permit any City .State___ Zip. photo and he says his expression is a post-1943 design as long as it still meets

70 MODEL BUILDER Authentic Scale F-16

Items included in kit: »Wheels »Hinges »Landing gear »Control horns No other ducted fan •Special tools · 12 oz. fuel tank »Nose wheel faring »Necessary linkage •All required fasteners »Three complete decal sets »Balsa and plywood die-cut parts »Scale flying stab assembly »Shock-absorbing nose wheel model comes close! assembly »Hand-layed fiberglass fuse (polyester) »Detailed canopy and cockpit assembly »Detailed and fully illustrated assembly book · Pre­ S pecifications : shaped control surfaces (injection molded polystryene) »Three-view with Wing Span - 47" detailed decal and painting instructions »Injection molded wings with Length - 74 Vi" aluminum extruded wing spars already molded in and ready to plug into Effective wing area 750 sq in. fuselage. Detailed fiberglass fuselage includes the following factory in­ Ready-to-fly weight · lbs. stalled items: »fan bulkhead/wing mounting spar (less opt. tanks & rockets) •Nyrods »control rods »thrust tube »detailed exhaust cone and molded armament.

F-16 Kit Opt. Tanks & Missiles Retail value - $270.26 Retail value - $37.06 Factory price - $229.72 Factory price - $31.50 (plus $10.50 shipping) (includes shipping) Powered by the proven ducted fan system.

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Byron Originals, P.O. Box 279, Ida Grove, Iowa 51445, Ph: 712-364-3165 the minimum cross section require­ newsletter. Ed solicits suggestions,dona- laughs. Entries ranged from lightweight ments would make a few more fellows tions and assistance in helping to answer Peanuts through highly over-powered honest with their 46 Zippers. questions from beginners. Note that this Juggernauts that thrashed their way Well, how about it? This columnist is strictly a private venture with no through the air (and sometimes into the would be most interested to hear your support from the AMA. Contact Ed ground). Evidently those were the types views. Write when you get the chance. · Whitten, Box 176, Wall St. Station, New kept in mind when this rule was posted: York, NY 10005. And please tell him you "No more than three barrel rolls allowed read Model Builder! during flight!” Hannan...... Continued from page 50 IN OTHER WORDS An added distinction to the contest Scale model builder Bill Kee, of Idaho, was its location in Dominguez Hills, near year’s membership, including the excel­ enjoyed our March Hangar lead-in line, Los Angeles, made available through the lent NFFS Digest, edited by Bob Meuser, and says that while he was a draftsman at cooperation of the SULA R/C glider costs $15 for modelers over 19 years of Rearwin many years ago, he heard the club. On these historic grounds, the first age, and only $7.50 for those under 18. same idea expressed in a less sophisti­ large aviation meeting in the United Contact NFFS, 707 2nd Street, Davis, cated manner: "It it looks good, it is; if it States of international stature, was held CA 95616. doesn't look good, it ain’t!" during 1910. Oddly, few people are even BAMA! HISTORIC SPEED MEET SITE aware of this epic production, which Everyone talks about the “ beginner During April the Flightmasters model lasted an amazing eleven days. Thanks to problem," but few really do much about club conducted a contest for rubber- Captain Ed Toner, we were able to it. But now, Ed Whitten has taken up the powered speed models. Classes in­ review the entire story in D.D. Hatfield's baton personally, trying to bring about cluded both scale and non-scale types, book Dominguez Air Meet. some changes. His solution centers resulting in a remarkable variety of Conceived by two pioneer aviators, upon the creation of the Beginning Aero entries. Contest Director Carlo Godel Charles Willard and Roy Knabenshue, Modelers Association, which will seek kept things moving along at a brisk pace, the spectacle was financed by local out ways to help tyros of all ages (not and the entire event was of a relaxed, businessmen who had never actually only juniors). Among the goals are low-key nature with the accent upon seen any sort of aeroplane fly, certainly a introducing aeromodeling activities into humor. venturesome risk at the time. But so public schools, gaining greater recog­ The scale models were flown over an effective was the planning and publicity nition for the hobby/sport/art, persuad­ 88 foot course, while the open models that entrants were attracted from as far ing manufacturers to produce more were required to traverse 176 feet. away as Europe. The super-successful good, yet inexpensive beginner kits,and Neither distance sounds particularly French Reims air meet of 1909 served as a other equally ambitious undertakings. formidable . . . until one attempts to guide for the American promotors and All told, a mighty tall order, but one make a model go that far in a reasonably the message was clear: Offer big enough worthy of support. Ten dollars will enroll straight line! Some models described prizes and you will have plenty of you as a memoer of B.A.M.A., which will several circles enroute to the finish line, entries, and the public will flock to see include 12 issues of its STAR SKIPPERS producing very low scores but very big them. And that isexactly what happened.

AUGUST 1982 71 Some $80,000 in prize money was of­ portrayed previously on foreign postage fered, which attracted about 57 entries stamps, it took some twenty years of TANKS - NEVER BETTER'' (including lighter-than-air craft). Natu­ lobbying by members of the Soaring rally all of them did not appear, but Society of America to have such an idea those who did were amply rewarded for accepted by the post office hierarchy, their efforts, and performed before according to an item in Soaring maga­ crowds as large as 60,000 spectators. zine. The three sailplanes depicted on Featured "stars” included Glenn the new postcard were rendered by Curtiss, Louis Paulhan, Tom Baldwin, Robert E. Cunningham, of Fort Worth, Lincoln Beachey, Waldo Waterman and Texas. many more. Aircraft representatives OUR CUP RUNNETH OVER included Curtiss and Farman biplanes, Once again our readers have re­ Blériot monoplanes, helium balloons sponded with flying colors! Our re­ NEVER-R-LEAK fuel tanks were and dirigibles (which flew) plus orni- quest for information regarding the never like this before — and never thopters and multiplanes (which did original White canard "homebuilt” , better. Now, they provide a FULL not). Total public attendance was 176,466 resulted in several responses. First off TANK SYSTEM and boost your with actual gate receipts amounting to the mark was Donald “ The Wiz” Assel, flight time. You can fill your tank to $137,520. Truly the Dominguez Air Meet of Ohio, who should have a Peanut scale the top; the bubble allows enough was an important milestone in U.S. version flying by now. But next to reply room for the air, with the tubing aviation history, and yet it has been was Gordon Codding, who sent in actual fitting neatly inside the bubble. largely forgotten or overlooked. drawings for constructing the rare Here’s more good news on these But for those willing to search, re­ machine. As it turns out, Gordon spe­ up-graded tanks. All tanks, except minders exist today, in the form of cializes in vintage aircraft plans, and he those smaller than 4 oz., include commemorative plaques in Dominguez offers quite a variety of them for sale. We Klapper-Klunk (‘stiff-arm’ klunk) Hills. However, much more impressive is suggest you send him a couple of un­ a room in the restored Dominguez used 20

INDIAN CITY RADIO CONTROL CLUB UNBREAKABLE P re s e n ts GLOW PLUG KLIP Fully assembled and unbreakable. Strain DETROIT EXPO IV relief feature ends broken wire problem. Free replacement if this Glow Plug Klip Greater Michigan Modelers Show ever breaks. PLANES · BOATS · CARS MANUFACTURERS, STATIC DISPLAYS, SWAP-SHOP

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Soaring...... Continued from page 31 tow release controls. This 108-inch span high desert. I strongly recommend the plane weighs twenty-two pounds and thermals generated from early morning as possible before touching one. You takes off at about twenty miles per hour. to late afternoon by the dry lake be­ could have more complicated slaloms Here's realism, especially when the sail­ tween Joshua Tree and Twenty-Nine by placing parallel lines of markers, plane being towed is also 1/4-scale. Palms, California (just north of Route crossed lines, and so forth. Herb has been towing a number of 62). And it's not difficult to come up with different sailplanes . . . even two at a The wind was light and variable in other ideas for new and interesting time. He devised several clever tow direction, so I punched a stake into the events suitable for R/C sailing. How control and release mechanisms. One of dry mud near the center of an immense about blindfolded skipper events? (Here these consists of a simple wire bracket open expanse. You launch, then cruise your teammate talks you through the that sets in the nose hole and at the same around the sky until you run into lift. race.) How about night sailing with time is held in place by a releasable tow- The higher you go, the stronger the lift. suitable running lights? How about hook under the c.g. This allows you to Soon the question is "How high dare I some ideas from all those who believe use either a tow plane or a conventional go?” there’s more to sailing than simply high start or winch launch. I had a number of enjoyable high slipping silently through the sauce? Herb is now completing a 1/4-scale flights with my Curio and Legionaire ★ ★ ★ ASK-18 that includes a more sophisti­ 100. Then disaster struck! I stretched the Herb Smith, of Denver, Colorado, has cated nose tow mechanism. Here two line to launch the Curio in a new direc­ been modeling for some forty years. rods are separately driven to ensure tion, as defined by the fallen line and He’s explored both extremes. After capture or rejection of the tow line. parachute. As I released the plane, it building hand-tossed and rubber pow­ (You can’t help but notice his top-notch rose in a normal manner, then suddenly ered models, he built two full-scale air­ skill as a toolmaker in each of these it pitched down and slammed into the planes. He soon learned how expensive devices.) This thirteen-foot span sail­ ground. I couldn’t believe what had “ really giant" scale can be, so he re­ plane is primarily constructed of spruce happened. The flight path was more turned to R/C soaring, creating his own spars and plywood formers (following abrupt than could have been possible designs to win a variety of contests. In the design of Cliff Charlesworth of the from a hardover reversed servo. recent years he's been right up there United Kingdom). It’s controlled by After retrieving the pieces and recre­ among the top contestants. You may elevator, rudder, releasable towhook, ating the situation, I discovered that the have seen his Assassin, a fiberglass and remotely controlled disc brakes for line had become snared on a steel wire fuselage FAI contest ship having 120- precision landing. that was partially embedded in the dry inch built-up wings that cover 960 Herb and his flying buddies operate mud. The launch started normally, but square inches. The semi-symmetrical from a sod farm. That’s great for smooth at about twenty feet the steel wire pre­ airfoil has large flaperons (covering 300 takeoffs and landings. But, remember, vented the line from rising any further square inches) so that there’s plenty of the sod farm is about a mile high (the and pulled the plane straight down to opportunity to change the camber. altitude of Denver). I’ve flown in that the ground. I’ve now learned another According to Herb, you take off with a area and learned first hand about the lesson. I’ll make certain that the launch bit of flaps down then return to neutral extra speed you get from the thin air. line is free and clear before takeoff. until you find a thermal. Herb ballasts up You cover a lot of ground, like it or not. Now back to the building board! to seventeen ounces per square foot for Here’s wishing Herb and his friends the If you enjoy catching the latest think­ the speed run and has covered the two best soaring. ing on the origin of natural flight, read laps in as little as 9.5 seconds. Kraft KPS- ★ ★ ★ “ Running, Leaping, Lifting Off” by 18 servos in the wings operate the flap­ You’ve heard of Murphy’s Law . . . “ If Kevin Padian in the May/June, 1982 erons with minimum play. something can go wrong, it will.” Well, I issue of The Sciences, published by the More recently he's been exploring don’t believe that nature is intentionally New York Academy of Sciences. .. scale towing. In six months he scratch- perverse, and yet unusual unhappy Among the vertebrates, active flight has built a 1/4-scale Super Cub with a events do occur . . . and are worth evolved independently at least three Quadra engine (about two horsepower) noting to avoid making that unlikely times: driving a twenty-inch prop. It flies with mistake again. "Since late last century, two theories ailerons, rudder, elevator, throttle and This last week-end I went flying in the have been under study. The ‘aboreal

AUGUST 1982 73 and metal parts. Even so, the drain on khaki pigments was so great that grey High Performance POV was used on painted cowlings and OVER plywood parts. Durability of Class B Accessories for doping was superior to Class A. The next Tamiya Off-Road scheme was better again. I R O H 8 5 Vehicles Available CLASS C doping, introduced during early 7918, was both opague and water­ for Immediate Delivery, and more proof and consisted of three coats of — ■ on the Way!!!!!!!! shrinking dope. This finish was faster to A****************************************************** put on, lasted longer but, like Class B, it used more of the khaki pigments than JUST A FEW OF THE 85 HIGH QUALITY ACCESSORIES AVAILABLE: did Class A. The solution was to employ POV greys as for Class B. REPLACEMENT BRASS GEARS DUAL SHOCK MOUNTS ALUMINUM WHEELS It should be noted that no doping scheme completely superseded HEAVY DUTY FRONT AXLES METAL REAR GUARDS SKID PLATES another: all three were in use until the HEAVY OUTY STEERING KITS RUBBER SHOCK BOOTS SIDE NERF BARS end of the war. The number of coats COIL OVER SHOCK KITS ALUMINUM CHASSIS BALL BEARINGS stated above were typical. Doping was SPECIAL TORSION BARS FIBERGLASS CHASSIS SHOCK OIL done to achieve a standard of finish, MODIFIED OFF-ROAD MOTORS therefore, in any scheme the number of Available From: coats might vary. WIDE FRONT END KITS HOBBY MARKETING During 1917, some aircraft could be H. D. FRONT END TUBES 657 West 19th Street seen with cellulose PC-ΊΟ on all upper COMPLETE HARDWARE SETS Costa Mesa, CA 92627 and side surfaces except where POV (714) 646-9273 Standard Khaki was used on the cow­ Dealers Inquiries welcome lings and ply areas. This khaki POV was darker than its cellulose counterpart. Clear dopes were either cellulose theory' suggests that wings evolved as a from animals that glide. And they per­ acetate or cellulose nitrate, the latter result of gliding down from trees, while fected the identical technique because being noted for its flammability. Clear the ‘cursorial theory’ maintained that it is the best way possible for a vertebrate varnishes were also of two forms: a flight evolved from the ground up .. . to take to the air, and control its course, modified nitro-dope (the standard non­ creatures running after their insect prey on extended wings." Here’s an article shrink waterproof varnish) and a refined evolved wings to help stabilize their well worth reading. linseed oil varnish. The former was used pursuit. First, around two-hundred- See you next month. · over clear dope and gave protection million years ago, in pterosaurs, a group against the oils used in non-rotary of flying reptiles contemporaneous with F/F Scale . . . . Continued from page 55 engines. The latter was used on rotary- the dinosaurs and quite closely related engined a/c. Both clear dopes and clear to them; second, some seventy-million been expected. The varnish was a non­ varnishes show a honey color when years later, in birds; and finally, another shrinking cellulose. The varnish was viewed in depth (as in the can) but the seventy million years after that, in bats.” applied to metal and ply parts if desired. dopes did very little to modify linen or Padian argues for the ground-up CLASS B doping was an improvement: pigmented finishes, whilst the varnishes approach. "Bats, like the pterosaurs and three coats of shrinking dope (color) would add a very slight golden glint birds before them, probably learned to covered by two of clear. The latter (modifying linen color and adding a fly directly, without having to learn first provided waterproofing. Although this yellow-orange factor - very slight - to to glide. If, despite the conspicuous scheme was faster in application, using pigments). We will cover this effect differences among the three animals, less dope and man-hours, the three more completely under the subject of the general arrangement of the wing coats of pigmented dope ate into the natural fabric. joints and muscles and the flight stroke supply of coloring agents more rapidly There are a number of markings on itself follow such similar lines, it is be­ because of increased concentration of aircraft surfaces that have been a puzzle­ cause they all faced the same aerody­ that medium. When this class of doping ment to modelers and replica builders namic problems. They independently was introduced in the latter part of 1917, alike. When you realize that they are, in discovered the kinematic pattern that it was found that valuable cellulose part, the numbers required to be placed produces a vortex wake. These animals materials could be saved by the use of on almost every component of an air­ differ in kind, not merely in degree, Pigmented Oil Varnishes (POV) on ply craft (both within and without the structure) so that accident investigation can be aided, then they begin to make Eliminates GLITCH problems associated with long servo leads. some sense. I have before me a photo of Eliminates need for voltage robbing chokes and other devices with a Bristol F2.B rudder. Additional to its leads over 15" long scripted logo "Bristol,' it has the part Modern CMOS IC technology number (25351) and the letters "CB." Pertinent to the subject at hand, the Uses less than 0.5 milliamps at 4.8 volts letters "CB" tell us that this particular Power lines are capacitor filtered aircraft was painted in Class B doping Available in 4 versions with connector installed:r v . scheme using Celion, limited dopes and ' $10.95 - Single Channel, single servo drive (Single)) GS-1I varnishes. So that you might mark your $12.95- Single Channel, two servo drive (Wye) GS-1-1Y ” aircraft intelligently, the following list of $14.95 - Two Channel, two independent servo drive (Twin) GS-2 code and manufacturer is presented: $17.95-Two Channel, two servos per channel drive (Twin Wye) GS-2Y El£CT»ON>CEMS VQOCl SYS’CVi A - Standard Collar Co. "Arm oid" • Overall lead length is approximately 6" to 8" B - Robert Ingham Clark " Brittania” i ■ · Modeler must furnish own longer extensions as required.______C - Cellon, Limited "Cellon" Specify Radio $ 100 Shipping and Handling on Pre-Paid orders, add E - British Emaillile μ ’ 6% for California residents, Mastercharge and Visa. R - Royal Aircraft Factory " Raftite" 6175 PALO ALTO DR., ANAHEIM, CALIF. 92807 (714) 637-2161 N - Seibe, Gordon & Co. "NovelIon" T - British Aeroplane Varnish Co.

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"Tkanině” it seems wise to present a short treatise not very waterproof. The dopes of Class The combination of a manufacturer's on the method of application of these C were so much better than those of the code letter with that of the doping doping schemes. Manufacturers pre­ prior schemes that thinning was not scheme used provides full information pared notes for the guidance of their found necessary, nor was a waterproof­ as to whose product was used and to employees which were used on com­ ing top coat required. However, RNAS what standard they were applied. bination with the official scheme instruc­ seaplanes has the classic three coats of Apparently, there could be combina­ tions. The objective of these notes was Class C doping schemes with an added tions: a production Sopwith Snipe largely economic. oil varnishing for more protection." · (E7989) was marked "CD & £" which Prior to shrink doping, the nap was to would read as Cellon Class C doping be laid with a solvent pad. The correct Peanut...... Continued from page 51 scheme plus Emaillite. According to one number of coats were to be evenly source, the use of the color red when applied. aft end. Use sheet balsa to cover the first marking a "B" indicated that the mate­ Fuselage brush strokes are to be bay of the fuselage structure on the sides rials used were Clark's "Brittania" Nitro- vertical. (Top and bottom would be, and the bottom. Dopes. The marking of an aircraft with presumably, cross fuselage; although The model did not need any thrust an "EC2” meant thatthreecoatsofEmail- one might wonder if they ran fore and adjustments, but the setting of the lite had been applied, whilst the ",EC2" in aft on the top decking of the SE5a—as ailerons may be critical. On the model in blue meant that three coats of Emaillite one example .. . ed) Pressing too hard the photos their trailing edge is up about Nitro-Dopes had been applied. (The with the brush was avoided because it 3/64 of an inch above their true neutral doping scheme identification was stretched the fabric and would promote position. marked in black.) Nitrate dopes were the collection of the medium in "pools” . See if you can build a lighter Super restricted from the Front. Wing and tail finishing brush strokes Sytky and give the Fikes a run for their The Class D doping scheme causes this should be parallel to the ribs of those money. · writer certain confusion (perhaps some­ structures. one can supply more detailed informa­ Overbrushing was to be avoided as a Scale...... Continued from page 27 tio n ), because it was designed, thin coat would not protect the fabric apparently, to provide a method of and would soon craze and peel. The subject due to problems of something aircraft finishing that was other than of finished fabric must appear to be of even way out or documentation that is very the first three schemes, but the one hue density. poor. detailed description found for it seems Identifying colors were applied to At the recent M int Julep, I competed identical to Class A! There is the pos­ fabric after shrink doping. These colors with two Hiperbipes. My older precision sibility that the aforementioned would crack easily and so were clear model was entered in the FAI F4C event. reference is not at variance with a Class varnished after application. The second one, just completed, was D doping scheme IF the only alternation Early dopes were too viscous for entered in Sport Scale. During the was due to the substitution of different application and were thinned. Oil var­ course of the weekend, a number of pigments to achieve the Khaki color. nish was necessary as a top coat because persons commented about the "twin Before passing on to the next subject, these early dopes were, of themselves, models” . Be assured they are a long way

AUGUST 1982 75 The static judging started Friday eve­ ning and continued Saturday morning 1/4 SCALE-HEAVY DUTY HINGE until noon. Everybody had an opportu­ nity to fly four rounds. The first round TOOTHPICKS - u s e flying order was rather flexible in that ADHESIVE ASSEMBLY ( TYPICAL > some models had not beenstatiejudged; therefore it became a "fit into the pattern" arrangement, which really wasn’t awkward at all. John Guenther, his co-CD Dale Arvin, and the membership of the Southern Indiana RC Modelers, worked hard to develop a good contest. Their efforts were rewarded and appreciated by the contestants and the spectators as well. As usual, the Kentucky Park crew made the stay at this beautiful park a memo­ rable one. The weather cooperated until Sunday about noon, when showers USE S E A R S ' CRAFTSM AN moved in. It didn't stop flying but it 7’ DtA VENEER BLADE NO 32534 FOR SLOT made it less than enjoyable to sally forth to do battle in the sky. The one problem that develops at this SOLID SURFACES contest which is difficult (or maybe BUILT-UP SURFACES impossible?) to overcome is the early date in the flying season. It was most evident, especially among the more northern midwest modelers, that the FOURMOSTPRODUCTS Telephone: 15031 357-2732 drastic winter weather and severe winds and rain in March and early April did from being twins. In outline and size, mulling it over I can’t think of any really much to corrode flying skills. This, com­ they are the same, but beyond that point serious reason to say no to the idea. I do bined with the "early season equipment you’ll find many things not evident on feel that it puts a smaller sport scale whatevers’’ resulted in some crashes and the sport scale version. These little dif­ airplane at a definite disadvantage, irratic flight scores. If the contest had ferences add up to almost two pounds of especially against a highly detailed giant gone on any longer, at least at our site, weight and probably 250 hours of work­ model due to detail size and the distance we'd have had to call in the troops to fill ing time. If I entered the Sport Scale involved in the judging. Perhaps my in for dead starters and starting batteries. version in a Precision event, I would not proposal mentioned in last month’s For this writer's part, I can pont to one be very competitive. I’m not just speak­ issue would help here. That is, if two 15 flight that I have to count as the very ing of the austere cockpit, the missing feet lines are established and the model worst I’ve ever presented. I violated a rivets and screws, or the missing luggage placed completely on one side of the number of "rules” relative to presenting compartment, but the subtle little crafts­ line and judges at the other line, the a good competition flight. On Saturday manship items which just are not evident larger model would be placed corre­ evening, I had two flights to make up from 15 feet. The wire attachment items spondingly further away, at least in some with the F4C (Precision) Hiperbipe, as it on the precision model took many hours views. It’s not a huge difference, but was last judged and missed the regular to fabricate. They didn’t on the Sport some. rounds. On the first of two, I noticed a Scale. The folded aluminum ailerons At this point, I suppose it becomes an horrendous amount of vibration; this took weeks to figure out how to form experiment to see what impact it might resulted in an aborted flight due to little and I made probably forty of them have and there is nothing wrong with funnies on the elevator, aileron, throttle, before I got four that worked out right. that at all. Many clubs and contests have et al. It was the result of using a prop that Neither of those items can be deter­ experimented to determine the work­ was bored out for the larger shaft diam­ mined from 15 feet (without binocu­ ability of rules and proposals and pro­ eter of an HP, but where the spinner lars!). cedures. It is sad that the stakes are so back plate eats up most of the larger Enuf said on the subject. I did not high for the experiment. Competing for diameter shaft length. The resulting write the caption, George. And Gary, trophies or smaller merchandise prizes wobble was not good. On Sunday, a stick with your Sport Scale. Everybody is a lot different than when the grabber is non-bored prop was fitted and the really does have a shot at it. a many thousand dollar car. vibration was virtually gone. SOAPBOX ITEM #2 But, guys, in the final analysis all this Sin number two developed when I Golly, this month seems filled with dialogue is very academic. After all, the flew both Bipes from the same trans­ items of concern from several quarters. contest was developed, given birth, and mitter. This, of course, resulted in trim The decision by the Southern California nurtured by the Scale Squadron. They changes between aircraft. Sin three Scale Squadron and the Scale Masters have every right to call the shots as they developed because I had not flown the crew to lump Giant and Sport Scale in see them. If they feel that you can only F4C version since last season. one class has created concern from at use Widget 10’s flown inverted, on the As a result, when I called taxi complete least one quarter. Dan Santich ran a third Friday in July, they have every right and prepared to tool off into the sky, I survey at the recent Mint Julep and got to do so. had cold hands and allowed myself the signatures to send to Harris Lee support­ MINT JULEP 1982 negative luxury of being up tight. Cathy, ing his view that disagrees with the They came from farand near, some for my pit crew daughter, senses this very concept. A copy of the petition was sent the first contest experience, others to easily and was working on getting me to me and it contained three votes for campaign for the umpteenth time. Fast settled down. Bless her heart, it didn’t the idea and sixty-five against. In looking and slow, big and little, the models work. I ran off the runway, almost taking at the list, it shows that_ most of the crowded the sky. Four lines at two sites a landing light with me. I then adjusted signatures were actual competitors at provided many thrills over the two days. the rudder trim and took off. Better I the Julep. My wife’s listing shows 82 names sharing should have hit the light and stayed on I guess I’m a fence straddler at this FAI F4C (Precision), F4-Stand-off,Sports­ the ground! I spent the first five minutes point. My first impulse was to say bad man Division I and II, Expert Division I wondering when I’d get twitches. The news, no, nyet, or whatever. But after and II, and Giant Scale. roll angled across the runway, lost alti- 76 MODEL BUILDER 95’ PATROL BOAT B y F r a n c i s S . S m i t h L.O .A .4 8 " BEAM 10.5"

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In short, the only Phil Sibille, Hal Parenti, Lynn Elston, Cliff 500, and the Bell 222. thing I did right was to remember to call Tacie. Circus has also made available the the maneuvers. At least that way the Giant Scale: Bud Atkinson, John Baron 20, a small .20-.25 collective pitch judges could tell what it was they were Workman, Larry Scott, John Morris, and helicopter which should experience supposed to see! Competitive-wise, the Dan Santich. growing popularity. only thing that managed to help me Maybe an even hundred for 1983? The Custom Baron 50, head of the place was that there were only three F4C Fly high, have fun, think scale. One to line, is very cleanly made. It has the best and George Rose didn’t have a complete one, Bob. · tail rotor blade holders that I have seen flight with his P6E. to date. Ball bearings throughout, these I loved Dolly Wischer’s comment Choppers .... Continued from page 41 blade holders do not have the chord- following the flight. Kind, gracious Dolly wise slop in them that most other suggested that it would have been a Kavan does not have the market share holders have. good flight to use as a judge’s practice it used to have, so hopefully Condor Likewise, the main blade holders have flight at Reno for the Championships. Hobbies can re-vitalize the Kavan line two ball bearings and one thrust bearing Dolly was right, except that the critique and continue to supply kits and parts for in each side. This really gives smooth following the flight would have eaten up the Jet Ranger. feathering of the blades, resulting in a the remaining days for the event! I’d American R/C Helicopters displayed nice cyclic response. love to be able to say that the flight was and demonstrated its .40 powered Super Larry Jolly flew a Custom Baron 50 in planned that way, but t’ain’t so. I just Mantis. This kit has been gaining popu­ the demos until he had the misfortune messed up royally! larity, as some of the earlier problems of a main rotor blade parting company Some very nice models were in evi­ have been worked out of it. Basically, from the rest of the helicopter as it dence. When the smoke cleared, the the Super Mantis has very good poten­ hovered three feet over the lagoon. The following names were found at the top. tial for a reasonable price. free blade popped out over the con­ Sportsman Division I: Steve Meyer, American’s new gear ratios should be crete landing area, nearly settling at Doral Drew, Ron Krummer, Ron Pound, available in the near future, and hope­ Larry's feet. Meanwhile the rest of the and Charles Duvall. fully an optional gear driven tail rotor ship instantly disappeared into the Sportsman Division II: David Riley, will be made available too. Other than bottom of the lagoon. It all happened so Dick Konkle, Gary Wild, Joe Cohen, and the Mini-Boy, the Super Mantis is the fast. . . One second it was hovering, the Jim Chandler only other collective pitch .40-size next second it was gone! Since the water Expert Division I: Hal Parenti, Ralph helicopter on the market. was only three feet deep, the ship was White, Garrie Taylor, and Dale Drew. Circus Hobbies displayed its growing recovered without too much problem. Expert Division II: Don Srull, Bob line of Kalt helicopters. The major Gorham Model Products displayed its Underwood, Al Kretz, Bob Hanft, S.W. machine in the Kalt line is the Baron 50. Cricket, popular with beginners for its Kleinhaus, and Dale Cordes. Variations of these basic mechanics are ease of assembly and excellent flight F4C (FAI Precision): Bob Wischer, Bob used in the Kalt’s other helicopters. performance. Gorham also displayed AUGUST 1982 77 "R ID G E R A T " - $44.95 "P A R A G O N " · $79.95 49" span Slope Sailplane PIERCE 118" span Thermal Soarer Area · 436 sq. in., Wt. - 32 oz. Area - 1080 sq. in., Wt. · 48 oz Wing Loading - 10.6 oz/sq. ft. AERO CO. Wing Loading - 6.3 oz/sq. ft. 9626 Jellico Avenue, Northridge, California 91325 Phone (213) 349-4758 the Hirobo .60 powered Lama, and a Miniature Aircraft Supply also has them, and with a lightweight timer (the new, large gasoline powered Bell 47. some nice accessories available. One is a Tomy wind up toys can be converted This large 47 is similar to the large ball link pliers. It will help you pull off to timers) it should go. Bill manufactures Alouette that Gorham sells, but it will ball links in those hard to reach areas. this design for rubber power, in that sell for less, around $900.00 if I remem­ Another item that I must try as soon as configuration it is called the Solar Scamp ber correctly. Seems it is impressive possible is metal foil covering to (Solarcraft Design, 920 Via Brocha, Santa enough to satisfy anybody’s taste for a strengthen rotor blades. This material is Barbara, CA 93110). Has anyone else Bell 47. (Dick Hausfeld, are you reading?) 99% aluminum with adhesive on the tried solar powered free flight? If so, let John has also taken the Cricket and back. It should be perfect for those of me know how you did. The Solar Chal­ developed a new Hughes 300. Many of you doing aerobatics, or for blades that lenger (man carrying solar powered the Cricket parts are interchangeable are long and thin such as the Jet Ranger's. plane, flew from Paris to London on with the new 300, and adapter kits are That about does it for the MACS show, solar power) is on display locally, I went available for those of you who already next month will be especially for ad­ to see it, and it is very impressive. The own a Cricket. For .25-.40 power, the vanced intermediate or expert pilots motor is samarium cobalt, and was built Hughes has a new cooling shroud on it. who want to consider a simple governor and designed by Bob Boucher, of Astro This should eliminate the need for a to give more constant blade speed. See Flight. large heat sink that the Cricket felt most you then. · Speaking of samarium cobalt motors, comfortable with. Bob sent me the latest top-of-the-line 05 This helicopter is really cute; even the Electric...... Continued from page 29 at Astro Flight. It is a samarium cobalt 05, experts would enjoy having this little called the Astro Challenger 05 (in honor scale ship around on a calm summer sport wing, and the third a 36 inch semi- of the solar flight). It really is the ultimate evening. symmetrical aileron stunt wing. The in 05 design, absolutely beautiful work­ Walt Schoonard’s Miniature Aircraft plane would accommodate all 05 and manship, excellent lathe work through­ Supply displayed the full line of Schluter 075 systems. Sounds good, Bob, let’s out, silver graphite spring loaded products. The Heli-Boy, Mini-Boy, and hear more about how it all works out! brushes, and an armature that can the additional fuselages that will fit the Speaking of electric designs. Bill handle up to 25 amperes input. This is basic Heli-Boy mechanics. Walt had the Morez, of Solarcraft Design, sent in really the Rolls Royce of the 05 class; I’m new Twin-Star fuselage, with a nice front some neat photos of his solar powered doing the bench and flight tests now, hatch that exposed the entire front end free flight design. It is 24 inch span, with and hope to have the results out soon. of the helicopter for servicing. five three-inch solar cells driving a So far, the tests show that it will outper­ Walt will be putting on the Schluter Mattel motor. Bill says it is just on the form any 05 on the market. The price is Helicopter Cup meets this summer. short side of marginal, which is just as set at $75, which, though not cheap, is He’ll be traveling across the country well, since I don’t see any timer on it! less than any cobalt motor available, in promoting these "regional" meets, and About two watts per ounce is needed for fact, the next cobalt motor (Keller) starts of course, Schluter helicopters. Signi­ good flight; with about a three ounce at about $130, nearly twice as much. For ficant prizes will be offered, so look weight, I figure Bill needs two more cells those who want the best, it looks like this around for the closest meet in your area. to really go. It looks like there is room for is it. I’m running a photo as a "teaser,” more later! Contact Astro Flight, 13311 Looking for Those Hard to Find Soaring G oodies?«· Beach Ave., Venice, CA 90291, phone 213/821-6242 for more information. Well, enough for now, try the new U A eS ailplane S a cto ri/ electrics, and enjoy the power! ·

□ has the most complete and comprehensive line of R/C Soaring products to ever exist in North America. R/C Boats .. . Continued from page40 □ Our line of products includes those from some of the most respected firms in Europe, as well as a complete inventory from our own U.S. manufacturers. haust throttle or a modified carb. The □ We carry a complete line of Kits, Hardware, Accessories & Building Supplies and we O.S. Max 46 comes with a good carb as have a full inventory of Launching Equipment & Related Products. original equipment. □ We are here to serve you, the serious R/C soaring enthusiast with the supplies, kits FROM THE FIX-IT DEPARTMENT and other items we have all sought for so long. Anyone who participates in model Call or write today for yodr Free product listing & price sheet. boat racing any length of time is sooner or later going to be making repairs on his The S a ilp ^ F a c to ry {717) 244. 4508 racing boat. It isn’t a matter of when but of how bad the damage will be. Over the Red Lion, PA 17356 9am - 9pm EST past few years I've been taking photos of some of the things I’ve repaired after 78 MODEL BUILDER two models attempted to occupy the same space on the pond at the same time. Sometimes this joint occupancy results in little more than a “ bump.” On DU-BRO HEAVY DUTY the other hand, if things get lined up KWIK- GLO properly, the results can be rather un­ G L O P L U G pleasant. CONNECTO I believe the most important item to —HINGES consider when beginning to repair a FOB ENGINES W ith damaged boat is tying together of the .10 AND UP o o o repaired area to the original framework. PERFECT FOR !i»UHESffiftp) R em ovable In a wooden boat, this may mean cutting H ARD TO GET o o 0 C o tte r Pin AT PLUGS away damaged sheeting and framework 1 and rebuilding with entirely new struc­ One piece <§ t-= ture. This type of repair is shown in the brass barrel snaps on to o o o photos of the rebuilding of the left front plug lor @ » ir Shown actual sponson on my Excaliber 3.5 Tunnel. By positive size, these gluing extension pieces to the inside of starting o o o strong, nylon __ hinges are the existing framework, it is possible to 24 -1/2" built to take heavy loads. Dimen­ graft a new framework onto the exten­ long w ith sions are 3/4" wide x 1-3/8" long sions. Add glue blocks to areas where attached sheeting will be butt jointed to existing battery X .040 thick, using a 3/64" lugs diameter cotter pin for maximum structure. convenience and strength. What seems like a common repair, is Ideal for 1/4 scale models fixing holes in the sides of boats. The 15 Per Pkg. 3.75 No. 257 photos of the repairs to the Klampon Kai show how internal patches followed by external patches can repair damaged side areas. Another set of photos shows DU-BRO 20" FLEX-CABLE repairs made to my Prather 31" Deep MOTOR CONTROL Vee when it was rammed in the aft sec­ Provides the ultimate tion of the side. In this repair, it was in control cable necessary to remove a rather large assembly. Highly section of broken material. Once again flexible, free running and adiuslableat an internal patch was glued to the inside control horn N o. 1 6 5 ...... $ 1 4 9 of the hull. The external patch was then glued to the internal patch to fill in the area where the original side of the boat had been. This internal/external patch­ ing method gives a double-walled repair which is stronger than the original side. It sometimes happens that when fiberglass boats are hit in the side, the KWIK material may rip and not be seriously damaged. This is a fairly easy repair to FILL make if no new material has to be used to repair a hole. The photos of the tear in FUEL PUMP the side of my Wardcraft Offshore hull show how a rip in fiberglass can be PUMPS IN mended. Masking tape or plastic tape can be used to prevent the resin from AND OUT running through the ripped area while repairs are being completed. A paste HAND made of resin and micro balloons can be worked into the rip to fill the cracks. A OPERATED piece of glass cloth is then applied to the inside of the hull over the damaged area. Coat the area with resin prior to apply­ ing the cloth and then apply resin over the cloth to complete the repair. It is sometimes possible to make tem­ porary repairs at the pond by covering the damaged area with a couple of layers KWIK- FILL of tape. There are a couple of good tapes for this type of on-the-spot repair work. One that I've used is the two-inch wide GAS/or DIESEL Scotch Brand Clear Plastic Mending Tape. If you can get the surface to which the tape is to be applied real clean, this tape will really cling. This type of repair F U E L P U M P can be especially successful to areas CAT N O .250 that are not running surfaces for the boat. Included in the photos submitted with this article were a few shots of Dave DU-BRO PRODUCTS1 Blacksten making such a repair to his 3.5 INCORPORATED tunnel. 480 Bonner Road Wauconda, Illinois 60064 U.S.A. I hope the photos and ideas will help

AUGUST 1982 79 the person who has yet to experience to the pinion gear. A prototype Eagle the joy of repairing a banged-up boat. It had problems with main gears, most ELDON J. LIND would be my hope that you might not noticeably at the most recent Miami 24 have to put this information into prac­ Hours Endurance Race, but that was Introduces The tice. However, if you do much racing, before the new gear mold was finished. you'll end up fixing a boat sooner or In order to get the necessary low gear later. It sorta comes with the activity, ratios, small pinion gears are used, the DUPLICATOR MK1 jerry Dunlap, 119 Crestwood Dr. S.W., lowest ratio available using an 8-tooth Patent Pending Tacoma, WA 98498. · number. When used with a 52-tooth main gear, that comes out to a very low Fuel Lines . . . . Continued from page 16 6-1/2 to 1 ratio! Other ratios available WORLD S FIRST ADJUSTABLE HAND SANDER' THE are 6.1, 5.8, 5.4 and 5.1 to 1, something DUPLICATOR MK-1 SLIDERS. THE HEART OF THE TOOL. WHEN PLACED OVER A PATTERN. WILL COPY at least to me, lubricants that I hope to there for every track. IT THE SANDER IS THEN LOCKED TO HOLD THIS Drive from the main gear goes to a left SHAPE THE STICKIBACKED ALUMINUM OXIDE give you a report on in the forthcoming SANDPAPER SUPPLIED IS THEN PLACED IN DUPLI­ months. side mounted ball-type differential, the CATOR. YOU ARE NOW READY TO SAND EDGES WITH MACHINE LIKE FINISH DYNOS AGAIN diff being of basically the same bullet­ As you may recall, several months ago, proof design used for several years in the I did a mini-series on dynomometer tests Super J. This diff is very trouble-free, as on our model engines. When they were well as having the adjustable limited-slip written, I thought that, at the most, I feature that helps so much when getting might have one or two inquiries about the car dialed to the track. Theoutboard building a dyno. My judgment was poor. ends of the diff assembly ride in sealed There have been more than thirty re­ bearings carried in the previously men­ quests for additional details. Surprised? tioned aluminum hangers. From there, Yes, but it’s also been most enjoyable to half-shafts carry the power to stub axles realize there’s that amount of technical that also run in bearings, this time two of interest. them pressed into the molded carriers. OK guys. You’ve prompted me onto Large diameter pieces of surgical tubing another project. The previously de­ shield the half-shafts and their sockets scribed dyno was expensive to build and from dirt. But the neat thing here, and DELUXE PACKAGE $49 95 · $3 00 FOR SHIPPING CONTAINS 44 PATTERNS, 1/8” THROUGH 1" IN 1 16- required considerable machining. The representative of the small touches INCREMENTS THESE PATTERNS COVER MOST new project will be to design a dyno that Delta engineers into race cars, are small EDGE SANDING FROM 1/2A THROUGH 1/4 SCALE many other modelers will be able to “ buttons” , one each in the half-shaft build for less than $100 — complete. sockets, with the outboard button Ambitious, yes, but it just may be possi­ backed up by a small spring. These ble. It may be another four or five buttons, and the springs, serve to keep months, but it will be in this column. the half-shafts centered, both to avoid PORTING any possible binding, and to prevent the Pat Rose, of Sunnyvale, California, shafts from bottoming out in one of the wrote and asked for an explanation of sockets. what Schneurle porting means. Hey Bringing all of this drive train stuff to a guys, don’t give any condescending halt is a disc brake housing attached to grins. Chances are that a lot of modelers the left hanger,and a floating discdriven don’t really understand the basic funda­ by pins common to the diff assembly. It mentals of it. Next month, I’ll try to is of the single-disc design, while many explain. Thanks Pat, for your forthright STANDARD PACKAGE. $19 95 * $2 00 SHIPPING other cars are now using double-disc CONTAINS SEVEN 180° PATTERNS. 1/8" THROUGH refreshing letter. In September, the 1/2", In 1/16’ INCREMENTS brakes. Still, this brake is effective topic will be porting. enough that I can’t see any real need for THIS TOOL HAS BEEN NEEDED FOR YEARS Hope you’ll have, or have had, a good change. It issmooth,reliableanddoesn’t IRWIN OHLSSON. ΑΜΑ Hall of Fame member Fourth of July. · fade. GREAT PRODUCT BILL CANNON, of Cannon Electronics That pretty much covers the basic car,

"VERY IM PRESSIVE TOOL R/C Auto . . . . Continued from page 37 but there are quite a number of small LARRY & JOE OF J&Z Products detail types of items, many of which IT W ORKS GREAT assemblies used on other suspension were developed for the Super J, and so BILL HALPIN. Aircraft Engineer & Avid Modeler cars. The answer was to simply mount not all-new. The clutch assembly is one, CREATES PERFECTLY UNIFORM WING LEADING

EDGES the motor at an angle, with the pinion it is of the clamp-on design originally JOHN ELLIOT. Assistant Editor. Model Builder gear driving directly on the main gear. used by Delta and now also used in the As is usual Delta practice, the motor PB car. This Delta clutch is absolutely position is not adjustable, hence it also trouble-free; assemble it and forget it. can’t shift around in a hard crash. This The clutch in my four year old Super ] also means that the centerline to center- hasn’t been touched for three years. line distance between the drive gears is A fastener that Delta refers to as Super constant, resulting in large changes in Screws is used almost exclusively in the ratios made by changing both the pinion car. They are very expensive (two for and main gears. Not near the hassle it $1.50), but there is nothing better. They EXTRA HANDS COVERING JIG MAKES COVERING A BREEZE WITH ANY MATERIAL. ONLY $15 95 ♦ $2 00 sounds like, as Delta uses quite small can be tightened down hard, but never FOR SHIPPING main gears that are not prone to damage do the heads get stripped out as so often and so very rarely need replacing. In happens with phillips head screws. AT YOUR DEALERS OR ORDER DIRECT DISTRIBU­ TOR INQUIRIES WELCOME CALIFORNIA RESIDENTS over four years of racing Super J’s, the Throttle and brake linkage is simple to ADD 6% SALES TAX DRT has never had to replace a broken, install, straightforward in operation and melted, or stripped gear. With the Eagle, adjustable. Steering linkage is about like the same type of gear and gear material everybody else uses with the exception ELDON J. LIND. CO. is used, but with a new twist in the set of of the machined aluminum Super Clevis 2912 Walker Lee. Los Alamitos. CA 90720 (213)439-0231 (213)431-6750 the teeth; they are both coned with the that is attached to the servo. The servo small end outboard and set at a very saver works, is trouble-free, and has I J slight angle, giving a very smooth mesh been copied by most other manufac- 80 MODEL BUILDER Authentic 1/5 Scale P-51 Mustang COMPLETE KIT CONCEPT! SPECIFICATIONS Kil includes detailed liberglass fuselage, injection WING SPA N ...... 8 5 " molded wings and control surfaces and all WING AREA . . 13 0 0 sq . in. necessary hardware to complete model as LENGTH ...... 7 6 " shown. Four deluxe decal schemes, three view After years of intensive research, testing and Ready-to-fly weight. . 22% lbs. and detailed plans and isometric drawings also refinements, Byron Originals proudly announces CHANNELS...... 4 included NOTE: Pilot, paint, covering material the release of its truly remarkable 1/5 scale P-51 (6 for flaps & opt retracts) and radio gear not included Mustang. This deluxe, super-scale kit. complete with factory-installed Quadra engine and prop reduction system, is unquestionably the most sophisticated and realistic scale reproduction Actual photo of model on final with ever made of the famous WW II fighter. The list operational flaps and scale retracts ex of standard features and assorted hardware alone te n d in g is far too extensive to attempt even a partial description. So in order for you to better ap­ preciate this superb kit. we are offering a detailed information pack, complete with materials list, owners manual, parts price sheet and a miniaturized set of assembly plans and isometric drawings. Simply send us $2.00 along with your name and address and we'll forward your pack immediately. Once you review it, you'll un­ derstand why the P-51 from Byron Originals is being heralded as the greatest engineering achievement in modeling history. P-51 Kit Optional Pneumatic Suggested Retail Value $699.95 Retract System! Mail Order Price...... $5 9 4 .9 6 (Includes all necessary hardware) plus $ 1 3.00 shipping — Sequencing gear & wheel doors —Operational scale Oleo struts Complete Power Package — Scale tires & wheels Included in Kit! Consists of: — Single servo actuation Complete drive unit & mounting {F u lly illu s tr a te d in p la n s ) — Scale 24x 1 5 four-bladed prop Suggested Retail Value $ 16 9.94 Quadra's latest Schnuerle ported engine Mail Order Price...... $ 14 4.45 — 5% " spinner plus $2.65 shipping

Byron Originals, P.O. 279, Ida Grove, Iowa 5 1 4 4 5 . Ph: 7 1 2 -3 6 4 -3 1 6 5

turers of 1/8 cars. Ball bearings are used bly being an enjoyable process. Well, it cord that lets the transmitter meter read throughout the Eagle. Two at each might not have been so enjoyable when the receiver’s battery pack voltage, ball wheel, two in the clutch, and one each I discovered that all of the shocks bearings in the steering wheel... And a in the rear hangers for a total of 12. The weren’t identical after all, there being couple of other things that I have all-new molded tank is really super; it’s lighter springs for use on the front end forgotten to mention! Finally, a radio light, doesn’t leak, is easy to fill quickly, and no mention of this in the instruc­ manufacturer has put all of the proper and gives very consistent engine runs. It tions, but overall, assembly is a great way options into one package, and while it also (usually) measures 130 cc, which is to spend a few evenings. will be the rare racer who needs and over the limit of 125 cc allowed by ROAR EXTRA (BUT VERY NECESSARY) STUFF actually uses all of the trick stuff, at least rules. If you want the tank to be legal, Airtronics supplied one of its new it is there when you need it. More next best figure out how to reduce the radio systems for this test, and it is easily month. .. capacity slightly. the best system I have ever used in an RC The Picco .21 was supplied by Delta, as PUTTING IT ALL TOGETHER car. So good that I refuse to bury a look they import them, as well as a huge stock Don’t worry, I’m not going to go over at it way back here in the latter part of of replacement parts, from Italy. A the assembly of the car. If you build one, the article. So next month’s column will better, more powerful RC car engine Delta supplies the directions, so no need lead off with a look at this radiosystem. would be very hard to find. Remember to go over it here. And the directions are Until then, a couple of short comments. that Art used a box-stock Picco at the pretty good. Not as good as supplied The servos are strong and very fast; so World Champs, and at that race were all with a number of model airplane kits, fast that I actually raced the Eagle the of the high-output .21's available, many and a couple of steps behind the com­ first time out on a 4-cell pack. I have radically modified, and still a stock Picco pleteness of instructions supplied with since gone to a 5-cell pack, just because I won the race without even being pushed at least a couple of 1/12cars. (JoMacand like super-fast servos, but a 4-cell pack is hard. This particular engine is available Associated, for instance, supply instruc­ lighter and gives as much servo speed as several different ways from Delta, the tions that are excellent.) What keeps the everybody else’s servos on 5-cell packs. one used here is a “ kit” type of engine, Eagle out of the woods as far as instruc­ Don’t have much to say about the where the racer is supplied all the parts tions are six pages of very complete and receiver, except that it works. Lots of and has to put it together. That may easy to read drawings with most views range, no funny glitches... What else sound unhandy, but most racers take being isometric blow-up drawings. Any­ can I say?! The transmitter has all sorts of new engines apart anyway, so you are body with any mechanical ability at all whistles 'n bells. Reversing switches, end saved that trouble, plus it allows Delta to could build the car with the drawings as oint adjustments on steering throw, substitute a grenade-proof rear bearing the only guide, they are that good. igh and low rates, exponential or linear that uses a phenolic retainer and a Even though the car looks complex servo movement at either high or low special heavy-duty all-aluminum ma­ when assembled, and even worse when rate, a third channel if you can figure out chined rod. Topping the motor off is the the box is opened and all of those plastic a use for it (ROAR rules allow only two proven Delta heatsink head, but of bags full of parts are seen, the whole car channels/two servos), fine trim adjust­ much more value is the Delta slide valve is so logical in layout it just all falls ment on the throttle lever, external carb. A better carb is simply not avail­ together. Everything fits like it should, charging jack, an arrangements that able; needle settings are very positive parts d on’t have to be m odified or allows operation of the radio system and don’t change, the carb is a very forced into position, resulting in assem­ without turning the transmitter on, a long-lasting piece, the air cleaner sup-

AUGUST 1982 81 surprising. New rear tire set and re­ adjusting the ride height got everything,

CHÁRGER from. Frost Engineering except for a slight toe-out in the right rear wheel, back to specs. Still the car worked super, you could not tell from just driving it that one of the rear wheels was pointing anywhere other than straight ahead. And that brings us to another strong NOW CHARGE YOUR R/C SYSTEM FROM YOUR R . V . , CAR OR BOAT CIGARETTE LIGHTER.* GREAT FOR point of this car, its lack of sensitivity to CONTEST WEEKENDS AND SUMMER TRAVELING! 2 separate circuits w ill charge any nicad adjustments that on a pan car would system at 50 m.a. from 1 cell up to 10 cells drive you crazy. Sure, the car probably on either circuit. L.E.D. display for each circu it. Comes complete as shown in tough works best with everything just perf, but plastic case with 12 volt power cord and 2 it also can get the job done very well charging pigtails to be mated with your own charging plugs. Size: 4-3/4"x2-l/2"xl-l/2’\ with a bunch of tweak in the chassis, stagger in the tires, different amounts of NEW (ŠI&liilélíL© 0®® THE PROMISE THAT DELIVERS ? steering lock at full left and full right, ARE YOU TIRED OF HOLLOW-CORE PROMISES OF STATE-OF-THE-ART BREAKTHROUGH PERFORMANCE GLIDER OESIGN FROM £ and so on. U .S . MANUFACTURERS ONLY TO SEE ANOTHER BALSA S T IC K , POLYHEDRAL GLIDER K IT EMERGE FROM THE HOT AIR? 5 But back to the bent carrier. Turns out With no k it m odifications necessary, the CAMANO 100 OFFERS AS STOCK FEATURES: foam solid-core composlt · wing and stab construction for unmatched a irfo il accuracy and unbelievable strength; solid, flu tte r- I’m not the only one to bend one and free control surfaces and linkages Including ailerons, rudder, elevator, flaps and spoilers; 5/16** dia. wing support rod, spruce wing leading edge; fiberglass fuselage shell, now with fiberglass supplied for 5 Delta is presently working on a mechan­ the rear top deck and vertical fin ...... T h is p la n e i s ROCK S O LID , STRONG AND FAST enough t o f l y ical stop of some kind that will allow the w it h th e s lo p e r a c e r s a t m ore th a n 100 m ile s - p e r - h o u r and y e t i t i s s o CLEAN AND EFFICIENT THAT IT CAN N WORK THE LIGHTEST THERMAL L IF T w it h th e b e s t f l o a t e r s , g iv in g th e BEST THERMAL COMPETITION PERFORMANCE » carrier to give a little, as designed, yet a v a ila b le . I t can eve n THERMAL INVERTED. PERFORM CONSECUTIVE AXIAL ROLLS. DO OUTSIDE LOOPS, e t c . , and n not go so far as to take a permanent set. DETHERMALIZE IN A VERTICAL DIVE w ith flaps and spoilers deployed. It is also AVAILABLE IN THE 2-METER « FORMAT UNDER THE NAME K-M1NN0W...... THREE A IR FO IL OPTIONS a re a v a ila b le on th e s e p la n e s : th e o Still, having spare carriers sounds like a original EPPLER 193, the 205 and the NEW 214. £ good idea.

SEND 2 STAMPS FOR COMPLETE CATALOG d e s c r ib in g th e NEW FROST ENGINEERING CHARGERS and o u r WORLD-CLASS. · Only other problem was with the two HIGH PERFORMANCE MULTICHANNEL SAILPLANE KITS. Including: 2-Meter K-Minnow ($149.95), Camano 100 * steel pins that hold the lower ends of the ($159.95), Camano 100F3B ($164.95), Maestro MK III ($149.95), and Megan ($169.95). Dealer inquiries. rear shocks, terminating in the small rear DODGSON DESIGNS · 2904 SW Camano Dr.. Camano I*.. Wo. 9β1ςα bumper/wheelie bar. While showing chute, as in a chicane, you enter the first the car to a friend, he picked it up by the corner at or near full throttle, and with bumper, only to have the pins come the car hung out in one direction, simply sliding out, neatly releasing the bottoms flip it the other way, if anything adding of the shocks, as well as the ride height more power for the second corner. adjusters! Stuff went sproing! pop! all Delta 1/8 cars have always been highly over the place and we solved that prob­ regarded for being able to get the power lem by cutting longer pins and fitting 1/8 to the ground without throwing the inch wheel collars to trap the pins in chassis into an uncontrollable mess, the place. PERFECT COVERING MATERIAL Eagle simply advances that reputation Oh, yeah, we also blew the motor up. FOR LARGE R/C MODELS even further. Well, almost. Out practicing one day l .8 ojL/sq. yd. · Heat Shrinkable RACING IT and while listening to the motor howl on Easy to apply · Extremely strong Dope doesn't run through like silk First race was, uh, interesting. Before I a long straight, it just went dead and 66-WWc even got to the track, I was concerned coasted to a stop. Beat the bottom end 1 yd 55.95 3 yds 51750 5 yds 52750 that the car would push a lot in a big out of the rod, and this was one of those ORDER DIRECT Add 51.00foe Handling ( ♦ toxin Nevada) sweeper we have that leads onto the special heavy duty numbers. So far, no JERRY NELSON & COMPANY s 3510 San Mote« Avm uc long straight. Suspension cars have had explanation as to why, as these rods have Rrno, Nevada 89509 this problem; the rear end gets hooked been living two and three times longer 702-322 0664 _____/ up so well that the front tires have a lot of than the stock Picco rod, which is very difficulty in getting the car to turn. So good. Possibly it wasjustatoo-tightfitto there were medium soft front tires on begin with and after galling slightly just plied with it is extremely effective and, the car, the same ones supplied in the kit got worse until it went in a big way. The best of all, through use of nylon restric­ and that have proven to give too much motor was rebuilt, but with a Picco rod tors, the amount of power can be steering on a Super J, at least at our track. this time, and since then we have literally changed easily. Wide open, the carb has It only took a couple of laps to see that thrashed the motor, actually trying to a huge .375 venturi, available are restric­ steering was not going to be near the make it break another rod. Nothing at tors in .312, .250, and .200 sizes, and I problem I feared. I was hitting stuff on all, it is still a very good fit, so breaking normally use the .200 restrictor, as that the insides of corners, things that I very the first rod was (evidently) just one of level of power ideally suits the tracks I rarely hit before. those things that happens, even with the generally race on. Second practice session I went to best of high-performance engines. BUT HOW DOES IT WORK? good ol’ 318’s on the front, a combina­ SO, H O W G O O D IS IT? To be honest, I never thought I would tion tire that has a hard ring on the The Eagle is very good, but what you see a 1/8 race car that is so easy to outside edge and softer sponge inside. really want to know is if it is the best, drive... Rather, so easy to drive quickly. Still plenty of steering. So much that don’t you? Sorry, folks, too early to tell You point it where you want it to go, and coming off the sweeper I got the car on that one. The RC500 is an unknown it goes, simple as that. Actually, that is down very low and caught the end of a quantity at this time, but sounds quite also true of the Super J, but the Eagle 200 foot long steel channel with the right good. An '82 version of the PB car is due does everything the Super j will do, only rear wheel and that impact was enough shortly, either as a completely new car, will do it smoother and you get out of to deform the right hand carrier far an update kit for existing cars, or both. shape so much less with the Eagle. Blast enough to let that side’s half shaft drop What is known is that the Delta is down the straight, haul it down with out of a socket. Took a couple of minutes expensive, but they have always been brake, turn into the corner, squeeze the to flip the carrier up and replace every­ more money, and for fairly obvious rea­ power on and the car just floatsthrough. thing, getting the car back on the track sons, especially when compared head- If the line is too tight and the car is hung and finishing the practice. But the to-head with any other 1/8 race car. The out and sliding, no need to back off the carrier was bent, causing the tire to wear Eagle kit, less radio and motor, of course, throttle, just steer the sucker on through. in a coning pattern. Couldn’t tell it from sells for $580, the RC500 will go for $475, Through corners separated by a short driving the car, though, which was and the new PB for about that amount.

82 MODEL BUILDER C A M A R O F3B AMPERE F3E FOCUS F3B This is EISMANřTs newest F3B model. A formidable con­ An Electric motor powered high performance Sailplane An International favorite in F3B and winner of many tender already having taken some First places in European designed around electric motors of 200-600 watt, GEIST or contests. competition. This model uses a Wortmann airfoil which is Keller Motors. The fuselage will hold up to 22 1.2 amp. cells proving to be very efficient, also has canopy speed brake. The kit contains Epoxyglass fuselage and canopy. Wings are The kit contains an epoxy fuselage, canopy speed brake, rear foam, balsa covered. Ailerons are cut out and utilize torque- The kit contains an epoxy fuselage, foam wings covered in access hatch for servo and receiver. Wing is foam covered in tube linkage. Stabilizer and rudder are finished and sanded Obichi wood, ailerons are cut out. tail surfaces are cut out Obici wood Ailerons are cut. shaped and sanded. Kit to shape Kit Includes plans (German instructions), all shaped and sanded Includes necessary hardware and contains all necessary hardware. Detailed^ plans. (Instruc­ necessary linkage and hardware and 1.000 grams of ballast detailed plans. (Instructions in German) tions in German)

Span 2800 mm Fuselage Length 1290 mm Wing Area Span 2750 mm Fuselage Length 1280 mm Span 2550 mm Wing Area 60.10 DM2 Weight 1900-340C ~ Length 1360 mm Weight 2000 P Motor 200-600 Watt Wing Area 55.4 DM2 Airfoil Wortmann Fx60/100 Airfoil Eppler 387 modified Weight 1900 G Price $295.00 Price . $29995 Airfoil Eppler 387 Price ...... $275.00

STOCKED Exclusively in the U.S.A by: WILSHIRE MODEL CENTER 3006 Wilshire Blvd., Santa Monica, CA 90403 sisaann (213) 828-9362 exclusive models Hours 10-5:30 Mon.-Fri. 10-5 Sat. Closed Sun. / Visa & Master Card Accepted give or take a few bucks. has some kind of weight and balance and how to find it on various wing Take that as you will, but it has been form. For small birds like the Cessna 150, shapes and configurations; and Part III is my experience that a Super J pan car, there’s little or no slip-stick work to be the "piece de resistance" . . . how to selling for almost $400, is, in two seasons done because the variables are very position everything so that your CG will of racing, actually cheaper to racethan a limited. But on a multi-engined flying come out where you want it to. pan car costing half that much, plus at machine, where fuel can be transferred This is absolutely must reading for the end of two years, is in much better around, in addition to the large amount everyone who flies, or wants to fly, a BIG condition than the cheaper car. As of people and cargo that are carried, the Bird. Brad, being a nice guy, kept it proof, I still race my original Super J, weight and balance form takes on even simple so that even I had no trouble with our other two SJ's being two and more importance. Before takeoff, the reading and understanding everything three years newer, but my four year old pilot knows exactly where his BIG Bird is he had to say. Part III is probably most car is in such excellent shape there is no balanced, or what amount of fuel has to reason to give it up. be moved to where in order to achieve Whether or not the Eagle can live up that desired percent of the Mean Aero­ to the reputation of the Super ] is some­ dynamic Chord (MAC). For most of thing that only time will tell, but I those twenty years I flew for Uncle Sam, I R/C GOODIES suspect that it is well developed enough, was fortunate to have exceptionally fine P Ο BOX 192 · VAN NUYS CA and built stout enough that its chances co-pilots; yet, I often took the time to (213) 764.M90 are quite good. check over the "Form F” , just to be sure AIR CAPITAL MODELS So . . . you got this far in reading be­ that all 585,000 pounds of B-52 balanced READY-TO-FLY .40 to .61 cause you're interested in racing a where I wanted it to. Reg. S159.95 E N G IN E suspension car. The Eagle is not the only So why not a weight and balance SPECIAL choice available to you, but if you fail to summary for each and every one of our give it very serious consideration, your BIG Birds? It makes one helluva lot of $139.95 racing season many not be everything sense, and puts you in the drivers seat + $6.50 Ship you hoped it would be. · . . . with nounhappysurprisesbitingyou Fully Built & Painted with Controls, Fuel in the butt just when you're ready to fly, Tank, L.G . & Wheels installed. Needs or worse, seconds after you’re airborne. only Engine and Radio installation. Big Birds...... Continued from page 15 And here are a few more bonuses you get for planning ahead: a first flight R/C Battery Tester. doing damage to people or things is ever­ that’ll be much easier on the old nervous Charges & Cycles present, and the uninformed and un- system; a better appreciation and under­ Tx & Rx batteries. knowledgeable BIG Bird Buff becomesa standing for weight and its distribution; Γ " Locates bad cells ’ severe hazard to himself and everyone a plane that'll be safer and easier to fly; a Reg. S69.50 & provides batt. else when he’s on the flight line; that plane that’s going to last a lot longer; SPECIAL $49.95 copacity readings. tail-heavy and out of trim aircraft can and because it'll last longer and be more end up anywhere. .. fun to fly, you’ll be getting much more CRAFT-AIR c m / w y Look, I’m probably one of the world's satisfaction from your hobby and saving TRAINER worst mathematicians and I avoid getting many bucks that would have had to go involved with numbers as much as into radio, engine, and aircraft repair or SHIP possible; however, I fully realize that replacement. $6.50 safety has got to be the name of the Surprise! I didn’t include an explana­ SPEC. $32.47 game, and as a well trimmed and bal­ tion, sample or example of a weight and anced bird is both safer and a joy to fly, I balance summary . . . simply because Kit available with flat-bottom or semi-sym­ willingly take on the few basic formulas Brad Powers (bless his heart) did an metrical wing . 2 to 4 Ch . .19 to .40 Engine and accompanying math that are neces­ outstanding job on all of this in his In Colif. add Sales Tax. N oC .O .D .'s. sary . . . especially since my trusty $5.95 three-part series, "Let’s Talk About The Brochure 60? in U .S., $1.70 Foreign. calculator does all the work. CG,” (Model Aviation, April, May and Now it so happens that every full-size June, ’80). Part I covers CG and its effect 4- 1/2% Surcharge for airplane, big or small,civilian or military, on stability; Part II explains about MAC Visa or Master Card.

AUGUST 1982 83 while on their way to that inevitable OVER 50 CONSECUTIVE STARTS WITHOUT RECHARGING double-hernia, are gonna eat up current INTRODUCING THE like a hypercondriac pops pills . . . so using your 500mah pack along w ith NI-STARTERPAT PENDING '· regular servos is like playing Russian A new and completely revolutionary concept of power for glow plugs in model cars, boats, air­ Roulette with all the chambers loaded. planes. helicopters, anything using the 1.5 vt. Standard plug for glow engines Rechargable. Common sense and practical experi­ (up to 1000 times) Fits in your pocket, works ence dictate the use of nothing smaller sideways or inverted. Fitsthrouahcowlings. Uses Head Lock ™ plug adapter. Stavs on the plug, than a lOOOmah battery pack for that not in the propeller Incl. charger & instructions. airborne system. I’ve been using 1200 90 day guarantee. After that, if anything fails (normal usage) we will repair or replace it for mah packs for years, and have never run only S6.for up to one (1) full year!! SEE YOUH out of juice; the Gold’N Rod push-pull DEALER OR CALL US - BANK CARDS OK. COD OK. YOU PAY SHIPPING control system I use (BIG Birds, May ’82 $21.95 MB) allows my servos to work with Se« Your Dealer maximum ease, which in turn insures 13506 Glendundee Dr. minimum current drain. You can choose Herndon, VA 22071 to go with higher rated packs, such as the 1800mah and 2000mah packs avail­ SERVICE (703) 435-5805 able now. important, because here, Brad clearly m onth... Installation shouldn’t be a problem, in shows how to make out a weight and Almost forgot about the static trim­ spite of the huge amount of room balance form . . . although I'd have to ming I referred to; you can’t afford to available. As the HD pack weighs about rate Part II as running a very close guess about incidence and thrust angles, ten ounces, it makes sense to use it in second; the reason being that this article because you’ll never win at that game helping to balance the bird. After decid­ shows how to find the MAC on different . . . so get yourself a Robart Incidence ing where the pack is going to take up wing shapes and planforms . . . and an Meter and make life so much more residence, custom fit a piece of foam in accurate balance point is the foundation enjoyable for yourself. It’s useable, as is, that area and cut a pocket out of the that all the rest of the balancing and on most BIG Birds . . . and with a simple middle for the battery. Then, after trimming (static and inflight) are based extension can accommodate those few sliding the pack down into this pocket, a on. unusually large wings. piece of foam is stuffed in on top, The majority of you probably do HEAVY DUTY BATTERY PACKS allowing the battery pack to ride in a receive MA and shouldn’t have any Seems like more of you guys are cushion of foam (I find it a good way to problem digging out those three issues recognizing the need for heavy duty install receivers, also). and getting with the program. Since only battery packs, ’cause I’ve received a Charging HD battery packs,and keep­ a relatively few might not be AMA surprising number of letters asking ing them in top shape, all come under members, or don’t keep magazines (I’d about what size cells to use, how to the same heading. First, a caution: do call that heresy), or don't know anyone install them, how to charge them, and not try to charge your HD battery with who does, I'd be willing to send copies how to keep them perkin' along. the charger that came with your radio of this trilogy . . . IF . . . you remember Since the HD servos you should be . . . because that standard charger was to include two and a half bucks, Ameri­ using have a normally high current designed to service your 500mah pack, can with your request. This amount will drain, and pull close to one full amp and therefore its output wouldn’t be exactly cover the cost of reproducing when stalled, that airborne battery has much more than a trickle charge for and mailing (including the envelope). to have the capacity to handle this kind most HD cells. You’d be setting your BIG To say the least, I’m not in the xeroxing of demand. And by the way, if you’re Bird up for a BIG bust, thinking you’ve business, but I feel that this info is vital foolish enough to insist on using “ stan­ got a fully charged battery to rely on . . . and should be read by all. dard" servos to drive your control when, in fact, that HD pack would barely Last month I mentioned about a surfaces, don’t be lulled into a false have a third of its capacity available. balancer 1 was working on; well, I plain sense of security; those "standards’’ are What you need is a charger that puts ran out of time and wasn’t able to get the being forced to do considerably more photo work completed. Look for it next work than they were designed for and, Continued on page 86 P C M o d e lle Plug Schiff Auto

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Learning to wind for max safe turns is for a 14 inch motor) by about the fourth Thornburg . . . Continued from page 35 an art I don’t pretend to have mastered. or fifth flight, and hold that number The experts stretch the rubber way out, through the remaining flights maybe point of the fuselage, sans wing. Mark almost four time its length; then relax it; you’ll find a better method. this point with a pencil and glue the then stretch it back to around three If you are the stopwatch type, you may wing in place just above it, so the pencil times its length, say a few Hail Marys, want to order some rubber from F.A.I. mark falls at about the middle of the and wind. To do this, you need a friend Model Supply (P.O. Box 3957, Torrance, wing chord. . . . a friend with steel fingers, in case the CA 90510). Their catalog is only two bits, Can you test glide a model like this? rubbersnaps. I don't have any friends, so and worth it. Otherwise, you can get Barely. I prefer to hand wind it about 100 I hook the prop in the chain-link fence your supplies for this type of flying from turns and give it a chuck. that surrounds every schoolground, Sig Mfg, Inc., Montezuma, IA 50171. To fly your twilighter at all seriously, rotate the model so that it dangles clear They’ll even sell you a fatter 7 inch prop you need a few supplies. Most important of the stretched rubber, and wind. and hanger for 45

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AUGUST 1982 85 airborne pack right after a flying session. KIORITZ 2.4-KAWASAKI I’ve found that two hours of flying, MUFFLERS which includes a fair amount of violent maneuvers and cross-controlling, leaves • For UPRIGHT or INVERTED use me with about two hours and thirty • Bolls directly to engine minutes on the clock; a very healthy • Twin exhaust pipes pro­ vide scale effect reserve considering my total discharge • Cast Aluminum, polished time from a full charge is a tad over five • Neoprene exhaust pipe ex­ hours. There’s no doubt that my push- tensions included pull control system, good hinging and WARDCRAFT OFFSHORE balanced control surfaces, all contribute QK-1 For Kioritz 24.50 44" - 38" - 33" - 31' OK A For Kawasaki toward this comfortable safety margin. 24.50 No finer racers anywhere Since I like to KISS (Keep Things C-X Record Holder Simple, Stupid), I don’t install charging • For UPRIGHT, INVERTED WARDCRAFT MARINE jacks in any of my BIG Birds. And here’s and SIDEmounted engines P.O. Box 2579 Lynnwood, WA 98036 • Exhaust tubes exit to side why; I totally destroyed one of the of engine Frank Ward Dealer inquiries Invited. nicest flying birdies I’ve ever had • Ideal for Pitts style cowl Days: (206) 543-6534 because the battery pack rotated over a Eves: (206) 775-3969 period of three consecutive flying days QK-1S For Kioritz 24.50 and pulled a lead loose. Had I not QK-AS For Kawasaki 24.50 “ Digipace” for cycling my battery packs installed a charging jack to make things KIORITZ 2.4 . . . only I don't just cycle them in a “ easy," I would have had to go into the ENGINE MOUNT random manner. As you can see from bird in order to charge the battery and > One piece unit-specitically the photo, I keep a log for each and probably would have noticed the rota­ designed and engineered every NiCd pack (including my transmit­ tion taking place. for the KIORITZ engine ters), and establish a base time for each Now, of course, I’m forced to go • Precision machined and 0 pack when it's brand new . . . using the inside after that battery plug, and while bright polished QK-2 19.95 »Interchangable with C10 charging rate and an 18 hour charg­ there, take advantage of the opportunity original engine mount ing time as standards. to make a complete internal inspection. TATONE PRODUCTS CORP. I completely cycle a new pack through Yeah, I do bitch to myself now and then 1209 Geneva Ave. three times, and use the third discharge about the inconvenience, but I’m able San Francisco, Ca. 94112 time as my base for comparison to all 415-334-7189 to pull a good internal postflight and future discharge times (you've got to know for sure that everything really is maintain standards or else your compar­ Big Birds...... Continued from page 84 oka y.. .and that I'm not just doing some isons will be worthless). wishful thinking. Then, on the first day of each month, I know that many fellows also use that out at least 100ma at 5 to 5-1/2 volts; it whether or not I’ve flown during the charging jack for plugging in their can be the plug-in wall type that has a preceding month, I start cycling all my Expanded Scale Voltmeter (ESV) and fixed ouput, or a variable charger (one battery packs through. First, I fully keeping tabs on the condition of their with a meter is preferable). A good discharge each pack, disregarding any battery from flight to flight. Since no one source for either type is Ace Radio clock reading. But then, after charging at way of doing things is perfect, perhaps Control, although there are other makes the proper rate for 18 hours, I fully following my procedure for charging on the market, also. discharge, log that time, and compare it and inspecting, and using the ESV for As for charging time, just use the to my base. If they're withing 10 minutes monitoring the battery might help to cut standard C10 rate, which is safer because of each other, it’s no sweat; however, if the odds down even more. there’s less danger of overcharging. the latest discharge time is more than And one last bit about the airborne Arriving at this “ mysterious” CIO rate is ten minutes less than the base reading, I battery. . . for years I’ve been using,and just a matter of dividing the batteries do not use that battery pack (or trans­ recommending, a 5-cell, 6-volt battery rated capacity by 10: a 1000mah pack at mitter) until I find out why. It could be a pack. There’s certainly no problem from lOOma; a 1200mah pack at 120ma; an bad cell, I could have misread the clock, a standpoint of room, and you’re looking 1800mah pack at 180ma, etc. or I could have charged for less than the at a good 20% more thrust and speed for I mentioned earlier that I use 1200mah 18 hours. The point is that I find out the servos. Most radios can easily handle airborne packs and have never run out exactly what caused the difference in this increased voltage, although you of juice. Actually, I could say that I’ve time before relying on that particular might check with your radio’s manu­ never even come close to running out of pack again. facturer if you’re unsure. I picked the juice. . . because I use a load device like To get a feel for how much battery idea up from boat and car people and L.R. Taylor’s “ Power Pacer" and Ace’s that's left, I occasionally discharge my don't understand why us BIG Bird types haven't jumped on this before now. TWO-BY-FIVE The preceding paragraph on 5-cell packs gives me a perfect lead-in to a short review on Ace Radio Control’s “ 2x5 Redundent Power Supply.” It works off of two 5-cell packs at the same time, and if a cell fails or a pack loses its capacity, the 2x5 switches over to the good pack and also lights up an LED to Fiberglass Hull tell you what’s happened. 53 Length Overall / Beom I hooked up an almost depleted pack on purpose prior to flying, and checked Fiberglass Superstructure S Fur the 2x5 after a twenty minute flight. It ♦Plans are Included had done its thing, alright; the low pack Dynamic CATALOG 56 pages detailing »122 - 53" Harbor Tug Hull w/Superstruclure Funnel X Pi*n„. Kits. Hulls. Fittings. Accessories. »122H - 53" Harbor Tug Hull . . $174 95 runnel & Plans: S229.00 was out of the circuit and that fact was $3.00. fully refundable 1st order [All hulls are shrppeg i o b Dynamic p|an, Pnr, Je|(efson N γ ( advertised by the appropriate light nunanuc being on. Another handy item that Λ Μ Λ Λ MODELS P.O. Drawer C. Port Jefferson Stotlon. New York 11776 Phone [5,6, 928-820 comes under the heading of "insur­ ance.” 86 MODEL BUILDER SAFETY TH A T HUB I've explained how vital it is to balance those props and track those prop tips, and to use a six-bolt hub . . . but ne­ glected to urge you to safety wire those six hub bolts to make sure that they don't come loose and chew up the prop, Competition-Proven and to insure that the prop itself stays put. Your wiring doesn’t have to be as OCTURA fancy as the way I did it in the photo (it’s been a few years since I worked for Pratt & Whitney, but I think I got the twists X-SERIES right), but any kind of safety wiring would be better than none at all. MAD PROPELLERS It stands for Miniature Aircraft Direc­ tory, which I just received from Bill Wilbur, otherwise known as “ Data X-tra Speed !...X-tra Performance! Resources." At first I thought he was mad to go FOR PERFORMANCE YOU’ LL BE PROUD O F ... through all the time and trouble compil­ These, as all Octura Propellers, meet the most exact­ ing this vast amount of data, and that I ing requirements. Available now in beryllium copper. was equally mad to start leafing through Fit 3/16” shaft. Check your local progressive hobby the book. But it wasn't long before I did shop. RECOMMENDED an about face; there's a bunch of good X440/3 X445 APPLICATIONS stuff in MAD. For example, he not only X447 7 5 OUTBOARD lists 219 BIG Bird plans, but includes very X450 handy info about the airplanes vital X455 statistics, including the price and who to X455/3 65 SCALE HYDRO get it from. X457 r .65 DEEP VEE Bill also covers engines and servos, X460 X462 > 65 OUTRIGGER and has some great listings under Section •X467 go DEEP VEE F-88 books and such. Section G-367 Sources, and Section H — Ideas for Giant Scale. For your 1982 edition of the BIG Bird Buff's MAD, send ten bucks to Bill Wilbur, c/o Data Resources, 6 Laurel Avenue, Kittery, MN 03904. IGNITION of BIG Birds, ever. Make that motel flexcable is 3/16 and has a Norco ferrule Hope to get some flight testing com­ reservation now (if there are any rooms silver-soldered to the end of it. The pleted on a new Breakerless Capacitive left). If you want to register as a pilot, flexcable runs inside an aluminum tube, Discharge Ignition System (CDI) put out send your SASE to . . . Don Godfrey, 254 the stuffing box. This stuffing box works by C.H. Electronics up in Riverton, Washington Street, Binghamton, NY very well, because aluminum tubing Wyoming. Bill Carpenter, the head man 13901. If you want to go, but not to fly, around the cable forms a natural bearing at C.H., says he’s just about ready to I've got the brochures you’ll need . . . surface for the cable to run in. The way market his ignition system. Bill claims and you don't have to be an IMMA this unit is put together, if you should the installation takes less than an hour, member to attend this Fantastic Fly-In happen to break the cable you can’t lose and that virtually any engine from a .19 Festival! the prop, drive dog, stub shaft, etc. can be converted. In fact, this same TIP OF THE M O N TH RADIO BOX ignition can also be used on the larger This is an especially handy tip for those The radio box has to be built to fit the gas engines to eliminate the heavy last minute adjustments required on all center opening in the hull. It has to be magneto and the points, according to BIG Birds: DON'T FORCE IT . . . USE A no wider than 3-7/8 inches and can be as Bill’s flyer. BIGGER HAMMER! long as 8 inches in length. If you use I plant to start with either my ancient Al Alman, 2609 Burningtree Court, these measurements, the box will fit Enya .60 or a new Fox .78, and of course, Arlington, TX 76014 · using my venerable Flying Bathtub.. . A COUPLE OF REMINDERS JVS ...... Continued from page 38 JVS CLAIM JUMPER First, that you’ve-only got a handful of A Fiberglass Masterpiece days left before it's time to head for the Then polyester resin was used to glue 5th Annual Southwestern )umbo Fly-In the tube in place in the hull. There isn’t here in Ft. Worth, on July 17 and 18. much you have to do as far as putting it From the large amount of queries re­ together. ceived so far, it looks like the Jumbo is HARDWARE really going to be a "Jumbo.” Vern has a little different setup on the But even if you ran out of time perpar- strut. His strut is made from all stainless ing for our Ft. Worth Fly-In, you’ve still steel and uses two small stainless steel got almost two months to get ready for ball bearings on each end of the strut IMAA’s 2nd Annual International Fly- . . . not needle roller bearings, but ball. Manufacturers of the World’s finest In Festival. As most of you probably The bearings are instrument quality fiberglass Model Hydro planes know by now, it's being held at the R/C stainless and require no lubrication r Send 50« or stamps Disneyworld-like flying site of Byron while running. You just squirt a few for catalog. Originals in Ida Grove, Iowa, on August drops of oil on them at the start of the JVS Products, 27, 28 and 29. day and again that night when you put it J V S 39292 Spanish Bayonet, Don't drag your feet any longer, or up for the rest of the week. They do not "U products Box 452, Anza, CA 92306 you’ll miss out on the greatest gathering require oiling after every race. The AUGUST 1982 87 scale except for slight dihedral and a \ minor change to landing gear replace­ ment, after one year in the development stage, it is said to be an excellent flyer with gentle aerobatic performance with SOUTHERN’S SORGHUM & FLEXALL engines from 2 to 4 h.p. Spanning 84 inches with 1,350 square inches of wing area and an approximate wing loading THE STANDARD PLASTICIZER of 35 ounces per square foot, excellent CONTACT FOR flight characteristics are assured. Plans ADHESIVE ACRYLICS come on two 42-inch by 88-inch detailed FOR AND sheets for $21.95 post paid in the U.S.A. Complete landing gear, epoxy glass cowl SHEETING DOPES and wheel parts are available from T & D FOAM Fiberglass Specialties. Wendell Hos­ WINGS tetler's Super Scale Plans, 1041 Heather- wood Lane, Orriville, OH 44667. WILL ★ ★ ★ STOPS NOT From the Millcott Corporation, the CRACKING company that FIRST introduced “ expo­ ATTACK AND nential” to the R/C world with the STYROFOAM CHIPPING ‘Specialist’ system in 1977,comes‘A Very CORES! SEE YOUR DEALER OR DISTRIBUTOR Special Sailplane Radio System.’ Consul­ tations with many sailplane flyers has shown the need for a specialized system DAVE BROWN PRODUCTS that’s able to cope with various aircraft 4560 LAYHIGH RD. HAMILTON.OHIO 45013 AREA CODE (513) 738· 1576 designs, flight or task requirements, and changing weather conditions. With features like electronic trims, high gain on elevator, switchable rate control on something you had propped out in the elevator, exponential control on low past. Well, to my surprise it was totally rate elevator,internal servo reversing on THE NILSO N .IS... different. I started with an Octura X-455, all channels, mixer for coupled aileron which is what I use on my 45 powered and rudder, mixer for Vee-tail or Delta ONOOiST/ONABiy Deep Vee. Then, I went to the 1462 operation, mixer for flaperons, droop- through 1450 size Octura props. By this able ailerons, differential aileron con­ me sesT! time I was totally confused. Note the trol; these are just some of capabilities of tu/uuen M/Dccr props are getting smaller. The boat and this ‘Special’ system. ‘Standard’ features AM AC FPIUS engine (K&B 7.5), would pull all of the such as a precision all-metal open THt 'USAS 300 " above props, but had no smoking speeds gimbal fitted with top quality conduc­ to speak of. I then went to the JG line of tive plastic pots, expanded scale volt­ For complete information, props, starting with a J-30 and working meter that checks a/c batteries, too,and Write to: down to an H-25. I even tried the three ITT Centilocand Deans harness connec­ Kustom Kraftsmanship Brochure B blades. The JG H-25 prop made the boat tors are just a small part of this system P.O. Box 2699 come alive and turned the tunnel into a concept. For a brochure describing this Laguna Hills. CA 92653 real smoking machine. Wow! The bow system in greater detail, send a SASE to: Call: (7 14) 830-5 162 came up and the speed was very fast. The Milcott Corporation, 177-F Riverside Dealer Inquiries Invited. boat handled like a dream. It was stable, Ave., Newport Beach, CA 92663. · it would turn left or right with the greatest of ease at full speed. That is an R/C World .. . Continued from page 13 between the four-inch rails like a glove. I outstanding feature in itself. I even tried made the box from 1/4-inch square to make it blow over by turning it hard special part of America’s Aviation spruce and 1/16 aircraft plywood for into the wind at all different angles, and history. sheeting. I used the 1/4-inch square it wouldn't. The wind that day was Others have described the HK-1 spruce to build the frame work, then blowing at about 15 to 20, with gusts up technically, this is just one person's took the 1/16 plywood and sheeted the to about 25 or better. feelings and impressions. For example, entire frame. Five-minute epoxy was SUMMARY the interior of the big Hughes gives the used to put it together, and then a heavy As I said earlier, the tunnel ran at very impression of a plane that’s not more coat of slow-cure epoxy was applied fast speeds and had stability like no than five or six years old, it has been that inside and out. This will seal and make other tunnel I’ve ever seen in my boat­ well cared for and maintained. Sitting in the box completely watertight. After the ing lifetime. This boat is not just a dual the left ‘front office’ seat, one is in awe at epoxy was cured, I sanded it lightly with class boat. It’s an outstanding Hydro the instrument panel/console complex. 240 grit sandpaper and made it ready for and, or an outstanding offshore. Call or The location of instruments and controls painting. write Vern at JVS and check one out for is as fresh as today. Going out into the FUEL TANK yourself. (JVS, P.O. Box 452, Anza, CA wing to the number eight engine, is a The tank is a little different in this hull. 92306.) special kick, and observing the high Instead of having the tank in front of the Happy Boating, and please don’t quality wood work that is so evident is engine as on most boats, it is in the back forget to take a friend along to show just hard to believe. No oozing glue joints of the left sponson, by the transom. I how much FUN boating can be. · here! Imagine how the flight engineer used a standard 12 oz. Pylon brand tank of number eight engine must have felt and siliconed it in place. Pressure from Counter...... Continued from page 9 on that day, many years ago. Going back the tuned pipe is used to push the fuel to in the hull and peering ‘way up’ into that the engine. No problems here at all. Ave., San Francisco, CA 94112. monsterous vertical fin is difficult to PROPPING ★ ★ ★ describe, but the real treat was being To prop out an inboard tunnel, you Wendell Hostetler does it again! This allowed out ONTO the wing and being would think it would be either like time a ‘monoplane’ in 42.5% scale, the able to ‘wing-walk’ Mr. Hughes creation propping out a hydro, or a mono, or like famous Art Chester ‘Jeep.’ Drawn exact from one tip to the other was an experi-

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ence. Containment of ones emotions how over the past 10 or so years, R/C vehicular sports, and occasionally it was quite difficult. As one photo depicts. model aircraft have been recognized involves spectators (Le Mans is a good Bob Walker got right to work and began as a very useful tool. · example). In most all cases, the specta­ to sweep off the 'Ν’ number to show his tors are allowed too close to the action. I gratitude... A day to remember by ail of W orkbench...... Continued from page 6 was not present at this Mint Julep us, many thanks Darrell, AND to the contest, but have been to the Rough Wrather Corporation for allowing us to Getting back to Dr. Stow’s letter, I River site in the past, and am familiar taste history in this very privileged and think the safety emphasis should not be with the layout. If spectators were special way. so much on the model, as it should be on allowed that close to the runway, then ★ ★ ★ the where, when, and how of its being event officials were grossly negligent. If To those who have been around the flown. The FAA has certain spectator the “ spectators" were officials, that’s R/C scene for some time, and have not limitations at full-scale exhibitions, to another story. Frankly, I’d feel less heard much about RS Systems in recent protect the spectators in a reasonable discomfort in the presence of a troubled years, they are quite busy producing the manner. So should AMA. Our pylon "heavy” than if it were a runaway Army's FQM-117A, better known as RC- rules are the only ones that clearly lightweight Formula I Pylon Racer! MATS, or radio controlled miniature specify spectator proximity limitations. With proper limitations and regula­ aerial targets. These RC ‘delta’s’, when Sure, it’s dandy - peachy to be right up tions, the incident at Rough Riverwould flown for a ground-based Vulcan gun­ close to the action, but because many not have been cause for alarm, however, ner, or infantryman for that matter, takes spectators have no idea of the potential I’m glad Dr. Stow has raised his voice in on the characteristics of an attacking hazards involved, AMA rules must be this matter. Whether or not I agree with aircraft, including speed, attack profile, established to protect them from their him on the proper means to an end, we and radar signature. Being more readily own ignorance. Lord knows, all of us certainly agree there should be an end available, easy to use and maintain, and have seen whole families, with "rug . . . to needless risk of human injury from having a relatively low cost, they provide rats" in hand, pushing baby carriages, our hobby/sport. the essential realism necessary for effec­ strolling right across the runway, to get a BAD NEWS, GOOD NEWS tive training. Basically of foam-core “ better view” from the other side. I’m sure that most modelers in the construction covered with fiberboard, Just as there are competent full-scale Southern California area assumed that aluminum components are utilized for aircraft builders and fliers, so are there the great model flying site at Lake radar enhancement. The original five to competent model builders and fliers. Elsinore, about 30 miles south of Corona, seven week course for RC/M AT training And there are grossly incompetent ones California, was city or state owned has been disbanded and hands-on in each category. It is more important to property. Not so, and it all came to light training by qualified model pilots has protect the innocent from the incom­ last weekend (May 16) when some of us now been implemented. Testing is in petents than to rule against all .. . like gathered at the lake shore for some R/C progress to develop means by which the cutting off your head to get rid of a float flying. The area at the southeast RC/MAT can be tracked in target prac­ toothache, there is a better way (oops, end of the lake, so popular for many tice via “ Red-eye" infrared air defense Dr. Stow is a dentist!). years to both R/C and F/F modelers, is weapons systems . . . interesting to note Accidents do happen in all kinds of and has been private property.

AUGUST 1982 89 for a happy marriage to Gail and Dave Linstrum. The ceremony took place in SWEITZER ENTERPRISES Captiva Island, Florida, on May 8,1982. 1925 S. E. O A K , Η ILLSBORO, OR . 97123 Dave has been the VTO (free flight) columnist for Model Airplane News for many years, though at last word, the PROUDLY PRESENTS ! continuation of this column was doubt­ ful. His primary occupation is in the field of architecture. 96" WINGSPAN INDUSTRY NEWS SCALE : 2"= 1-0" Kraft Systems has announced the formation of a separate hobby products group, and the appointment of Ray Forbes as group vice president. This 4 S h e e ts - restructuring primarily reflects increased 3Ft. X 9 Ft. internal emphasis on the hobby market, according to Kraft President, Art Leigh­ ton, and will separate its specialized engineering and other dedicated ser­ vices from the expanding industrial and computer oriented business activities. D.H.89A DRAGON RAPIDE The above changes indicate the suc­ THE FINEST SCALE R/C PLANS cess of Kraft’s dealer-direct sales pro­ gram, instituted by Ray Forbes ten ■ COMPLETE WINGS SHOWN ■ ( Fiberglass Cowls & Canopy months ago, and will assure more de­ ■ FULL SCALE INTERIOR Available Soon ) liberate R/C product line expansion and INTRODUCTORY PRICE $ 3B.50 p.pd. better customer service. PRICE INCLUDES MAILING TUBE ■ ADD $3.00 FOR AIRMAIL OUCH! A few months back, we mentioned the possibility of supplying enlarged its pilots, and all related individuals. The drawings for some of our construction From the “Golden Age” ... weeds and debris is being removed, prospects, specifically the Lockheed trash barrels will be set out and main­ Vega by Walt Musciano, from 1-1/4 up tained, a fence will go up (probably by to 3-inch scale. While the cost of prints now), overnight motor home and trailer for a 10-foot span version of this classic camping will be allowed, and model aircraft was not unreasonable, we had flying will be welcomed ... but you’ll completely misjudged the cost of en­ pay the fare. larging the original mylars to be used for Things can change. If models and making the prints .. . MONUMENTAL! ultra-lites tangle, just remember who Actually, experienced modelers are owns the property. If the lake continues enlarging and reducing plans every day. “INLAND SPORT” to dry up and return to normal (or what Though we’re not entirely in agreement A Schoolyard Scale R/C it was before the big rain), city owned with the idea (except for a specific class, For .049 Enginos. 37'/a* Wingspan... Κιΐ·ιΐ3 $22.95 area may again be available at the such as 020 Replica or 1/2A Texaco) Electric or .020 Schoolyard Scale / Light R/C Systems previous rate . . . nothing. And, if the old timer modelers are enlarging or OllNIWt··· t Dn I« i (7W| JTJ JflJ· S « l 50c to* Ih· FbW* Mod*M C.LIog FAA finally moves to regulate ultra-lites reducing old time classics to fit various FLYLINE MODELS, INC. (and that seems inevitable), the present engine sizes, in order to set maximum 2820 Oorr Ave. (B-11). Fairfox. Virginia 22031 U.S.A. rapid increase in activity may take a displacement vs. wing area. Complete different turn. plans aren’t needed. Bulkheads and ribs So . . . in the meantime . . . be pre­ must be carefully enlarged (or reduced), On Saturday, May 15, this property, pared to spend three bucks, which really but wing plans and fuselages usually 165 acres in all, legally changed owner­ isn’t all that bad, and if you plan a contest need only a centerline and/or spar ship. The previous owner was so low key or organized flying session, call Fred and locations in order to build them. that most everyone just assumed the site let him know in advance, at (714) Perhaps an article or series along these was the same as most all of Lake Elsinore, 675-4575. lines would be in order. A few simple city owned. Although in many ways LET YOUR FINGERS... drawing tools and a large roll of shelf ideal, the area was overgrown with Beginning with this issue, you will paper can put you in business. weeds, litter, broken bottles, etc., and note that Sig Mfg. Co. Inc. has shifted its Interested? generally not too nice for families who dealer listing ad page to Model Builder. We’ve also had inquiries about the came along to spend the day with their While we can hardly say “ Welcome techniques of converting O.T. free modeler type relatives. Aboard’’ to a company that has already flights for R/C assist. Usually we present Our first awareness of the new owner been with us as an advertiser for many O.T. gas model plans without alteration, was a bit abrupt. A young couple came years, we can surely welcome all of the figuring that most modelers who wish to by to collect $3.00 per car from car Sig hobby dealers listed, and encourage make conversions, would prefer to use owners who were flying models. When others to join in. Though it may not be a their own ideas. Would an article or we finally realized that what seemed to “ yellow page” , this listing does allow series on R/C conversion be of interest? be a fast buck scheme was actually your “ fingers to do the walking” when Let us know. · legit, a somewhat calmer investigation you’re visiting an unfamiliar area. Mod- was made. eler/travelers often find the local hobby Indoor...... Continued from page47 The new owner is Fred Feinberg, of shop to be a home away from home. It’s Anaheim. Fred is proprietor of what is a good way to locate the local flying field round, it is ideal for indoor flying. In now Elsinore Ultra Lite Aviation Park, if you’re stuck for the weekend, and fact, it is so large that three flight circles and as he was on site this parti'cular day, who knows, the dealer may have some may be flown at the same time. The we (Harry Apoian and I) were able to talk item in stock that you’ve been wanting girder work at the ceiling is minimal and with him. Fred’s intention is to turn the to pick up! it is not easy to hang up a model in the area into a clean and tidy recreation BEST WISHES, DAVE AN D GAIL steelwork. I have timed microfilm park, primarily for ultra-lites (naturally), Our congratulations and best wishes models that flew through the girders

90 MODEL BUILDER and touched only a few times during their long flights. When a model does hang up, it can be freed by gently bumping it with a tethered balloon sent up from below. It is possible to fly around the clock at the atrium, if you can stay awake that long. Daytime lighting is excellent, and nigntime is fair to good. Since the building has many sleeping rooms, you can stay on the premises and eat all your meals in the restaurants without step­ ping out of the building all week long. West Baden could be the best all around indoor facility in the United States, if not the world. INDOOR WEEK AT WEST BADEN 1982 All day Sunday is a practice day. It is the opportunity to get to know the area, get your scale data together, repair damage done in transit or whatever. Most of the top indoor flyers are there for you to meet and learn from their expertise. Indoor model writers and columnists are covering the many activi­ ties. This contest is so popular that some flyers have never missed one. Rumor has it that someone even changed their wedding plans so as not to miss this year’s event! Twice Indoor World Cham­ pion Jim Richmond hasn’t missed a NART meet yet. Contest flying started June 14 and ran through June 19,1982. MONDAY, TUESDAY AND WEDNESDAY The United States Indoor Champion­ ships run through Wednesday and are sponsored by The National Free Flight Society. This AAAA meet was directed by Charlie Sotich, Flardy Broderson, evenings, after daytime contest flying give the tiny monoplane enough power Tony Italiano (NFFS Prez.) and Gordon was concluded. to do little more than cruise. A new Wisnieski. Events included: Manhattan BIG BONUS motor of four strands of the same Cabin, Bostonian, Easy B Duration, On the last day of the VII NART meet, rubber was substituted. I didn’t have any Handlaunch Stick, ROG Cabin, AMA the only 24-hour indoor model contest .025 or .030 rubber along. The plane Scale, Hand Launch Glider, Kit Plan ever held was to take place, the 3rd climbed straight up and torqued over to Scale, and Peanut Scale. Also included World Peanut Grand Prix. All peanut the left. It was at this point that I decided were Paper Stick Duration, Pennyplane, scale models were welcome here. to try something new for me. I folded Novice Pennyplane, FID Duration, Pea­ One of the unique features at West over three strands of the .020 rubber and nut, and Unlimited Speed. Baden is that you can set up your boxes tied an over and through knot at each The festivities are capped off Wed­ for flying in your chosen area and leave end of the motor. The end of the one nesday evening with a banquet and them there all week. If you wake up at 4 strand left sticking out was trimmed off special guest speaker, Dr. Paul Mac- a.m. and want to go to the Atrium and fly close and the motor was lubed, being Cready. In case there is anyone who your models, do it. Just be sure to put careful not to get any lube on the knots doesn’t know, Dr. MacCready is the your clothes on first. There will be other and loops at each end. The three-strand aviation pioneer who designed the modelers out there flying at the same combination worked great. Just the Gossamer Condor and Albatross pedal- time! Anytime you care to you can right amount of power. Next time powered aircraft. The Solar Powered wander over to Club Miama for some you’re stuck with in-between sizes of Penguin and Challenger were also built socializing with the Hangar Pilots of the rubber, try an uneven stranded motor. It by the same gentleman. Earlier, Paul was Sunshine Squadron. just might work. World Soaring Champion. And to think As the MIAMA Indoor Group (one of WANDERING MODELS he started it all as a model builder! the yearly organizers of WB Indoor On occasion, a flyer will notice that THURSDAY, FRIDAY AND SATURDAY Week) says, "IN D O O R ISN’T FOR his model is flying in a zig-zag pattern. It June 17,18,19 were slated as the 7th EVERYONE, BUT INDOOR WILL NEVER will turn right and then begin to turn to NIMAS Annual Record Trials. All indoor DIE!" the left. This is usually caused by lack of classes were flown for national records. FINAL NOTE fin area. Next time this occurs, try a The "Index of Performance” format was We in indoor modeling respectfully slightly larger fin and note the differ­ again to be used. The best times you fly thank The Northwood Institute people ence. On scale models, a transparent are scored against the existing national responsible for allowing us the use of plastic outline that is larger can be records for your age group. Ornithop- this great facility. You are making many cemented to the original fin and not be ters. Autogiros, Helicopters, Mic Cabin, model airplane enthusiasts happy again noticed more than a few feet away. This Class A ROG, Hand Launch Glider and for another year. We hope this hospital­ is better than not having the model fly at others were expected to be setting ity continues for a long time. all. records. THREE STRAND MOTORS ROSIN T O THE RESCUE ADDITONAL DOINGS The last time we flew indoors, I Having motors slip over the shaft Also included were events for Rubber decided to put up the new Grapenut hook is frustrating and often disastrous Speed and FAC NO-Cal Scale. Movies Scale Caudron (from last month’s col­ (in Mike ships). If you have a violinist in and Symposiums took place in the umn). Two .020 strands of Pirelli didn’t the family, the problem may be solved.

AUGUST 1982 91 Another important thing is that begin­ ners, be they youngsters or oldsters, go MODEL IGNITION ENGINES & ACCESSORIES home with something in their hands. A trophy, a certificate, a kit, etc. Maybe you give a trophy for the most original subject, or the most promising new­ comer, or just for someone who has never won a 1st, 2nd, or 3rd. Several times, seasoned modelers have given my son Chris the model they flew in the meet. He was so thrilled he could hardly 77 Products now has NG K ME-8 miniature spark plugs, speak. He took the airplane home and designed specifically for Model Ignition Engines. just stared at it for days, then tried to Threads and Hex size same as Modern Glow Plugs price is $5.00 each, total build one just like it. It’s such a joy to see a kid wake up in the morning and the postage is $1.50 regardless of quantity. Will fit most original Ignition first words out of his mouth are, “ When's Engines and all Modern Ignition Conversions. the next indoor session, Dad?” THE WILDER WINDER (213)329-0273 17119 SO. HARVARD BLVD., GARDENA, CA. 90247 AND TORQUE METER Several times over the past few years I’ve seen people using the W ilder combination model. That aeronautical Winder. I knew it was a good piece of Make Glow ir.* Diesel tinkerer, Barnaby Wainfan has done it equipment, but I didn't realize how FIGHT INFLATION! again. A plane that is legal in two classes. really fine it is. Converts in minutes-no special tools required. A Boston cabin model that’s a Haw­ Having decided to finally order the .049 swings 7-3 @ 13,000-OS .90 20-6 @ 6,500 thorne Flying wing. I guess Barnaby just winder, I fired off a letter to Bob Wilder, Send 40V & SASE fo r literature. hates to build stabs. He has come out to in Texas. In a while, the reply arrived, Davis Diesel, Box 141, Milford, CT 06460 the sessions with only one model (a stating that a new batch of winders Call after 6:00 p.m.: (203) 877-1670 Drednaught) that had a stabilizer. With would be built sometime after Christ­ the exception being his canards, of mas. In February, a card arrived stating Take along the block of rosin used on course. Well, this month’s model flys that I could now send my check for the violin bow and rub a small amount great. Look at that long, long motor, too. $32.00, incl. postage, for the winder. The on your thumb and finger, and from I drew up the plan and prettied it up torque meter sells for $19.00 plus $1.00 there onto the prop hook. This should some, but it's still Mr. Wainfan's brain postage. stop the rubber from climbing. The child. The original was a little nose- When the package came, I was other reasons could be that you are heavy so we lengthened the tail moment amazed at how beautifully my Wilder lubing the rubber where it loops over a little. Don't forget the reflex at the Winder and torque meter were made. the shaft hook. I never lubricate the wingtips. It’s essential. You’ll like the The winder is 3 inches in diameter and 1- extreme front and back of the loop of way this little dandy performs. 1/8 thick. The throw on the crank rubber. A BEGINNER THAT’S A WINNER handle is 1-5/8 inches and the length of I have also noticed that most abrasions Getting that youngster to build a few the hookshaft is 2 inches. The most (tears) in motors seem to occur where models and fly them in a local contest is visible feature is a turn counter that the rubber passes over the front or rear the first step. How do you get him or her revolves like the minute hand on a metal hooks. It strikes me that small wire to keep coming back? In my opinion it is clock. The ratio on the crank is 20 to 1. S-hooks could prevent this from hap­ important that the novice get your One complete revolution of the counter pening. The abrasions that occur from positive comments. If you tell him how hand is equal to 500 actual turns. The slipping the rubber on and off the bad his model is or how poorly it flys or crank handle has a black plastic sleeve winder hook can also be eliminated. how much he has to learn, you’re just that stops friction to the thumb and This small S-hook attached to the motor going to turn him off. The rule of thumb forefinger. On turning the crank, it is could be slipped onto the winder hook is: if you can’t say anything nice, keep evident that there is absolutely no instead. The added weight is negligible your mouth shut. When he sees how friction through the gears. The action is and it could save your model. well your models fly, compared to his, so effortless that the weight of the crank THE YVAINFAN BOTHORNE- he’s going to realize he’s got much to handle will rotate the gearwheels. The MODEL OF THE MONTH learn. Also, he’s going to see how surface of the winder is brushed alumi­ How about a Boston/Hawthorne capable an indoor model is of flying. num and it is flawless. The 1/32 inch wire hook shaft is even beveled on the end of the hook. A handsome nameplate is attached to the back surface of the 0^ JOHN POND ^ winder, stating that it is custom made by Bob Wilder. The torque meter is machined with equal perfection. It is evident by the Old Time Plan Service smaller diameter of the hook wire that the meter is to be used for smaller The largest selection of plans in the world at the most rubber sizes only. An aluminum disk, 2 reasonable prices. Each list $1.00 inches in diameter, has a number scale All 4 for $3.00 around the rim measuring from 0 to 10. No. 12 OLD TIM ER F/F GAS As the small hook wire twists under No. 12 OLD TIMER RUBBER/TOWLINE power in the rubber motor, the attached red-tipped hand rotates around to the No. 12 OLD TIM ER FLYING SCALE A through K appropriate number to register the No. 12 OLD TIM ER FLYING SCALE L through 2 torque reading. The niftiest feature of New plans prices effective Oct. I, 1981 the torque meter is that it attaches to the P O Box 3215 rear of the Wilder Winder. To achieve San Jose, Calif. 95156 this marriage, the winder hook is re­ moved (one set screw). Then slide the Phone (408) 292 3382 torque meter mounting sleeve over the

92 MODEL BUILDER winder shaft and tighten a set screw on the sleeve and you are ready to wind. Both pieces are made like a fine SEVERSKY! watch. If you are interested in the winder, I suggest that you write to Bob Wilder, 2010 Boston Irving, Texas 75061. A recent note from Bob states that it may be next year before more winders are made. But you may want to get on the waiting list for these wonderful products. Doc Martin writes with a great sugges­ tion from one of his people. Why not use the glass display cases in schools, YMCA’s, etc. to promote model clubs and announce upcoming contests. I’m P -35 sure schools would welcome promo­ PURSUIT OR tions of activities like model flying. After all, what's a more wholesome pastime for kids than flying indoor model S2 RACER airplanes? 1 /32 SCALE Write your comments and send pho­ PLASTIC MODEL KIT tos (please) to Ken Johnson, 16052 Tulsa Street, Granada Hills, CA 91344 · Designed during the 1930s, the P-35 was an ancestor of the famous P-47 Thunderbolt. This kit may be constructed as either the P-35 m ilitary pursuit or a Bendix racer. KIT FEATURES: TWO TYPES OF WHEELS (hard and flexible tires) · DETAILED INTERIOR Am He I i ...... Continued from page 33 · TWO TYPES OF DECALS · TWO TYPES OF CANOPIES columns. It is simple to do it now, as the Send $1 for complete illustrated catalog. DEPT. MB head is already frozen in the lift-off ^ tos »Nc—^ 181 PAWNEE ST., SAN MARCOS, CALIFORNIA 92069 position. Believe me, this is the only way to balance rotor systems. completion of each step. PRE-FLIGHT MODS AND SUGGESTIONS RUBBER STRIP I’m saying it again: If you area novice, Last month I briefly talked about how get some help to trim out your heli­ FAI RUBBER. Made in U.S.A. the head felt "stiff” in certain applica­ SIZES: 1/4". 3/16". 1/8". 3/32". copter. If you can’t fly to start with, it is tions of cyclic. This is caused by portions very difficult to tell whether it’s you or of the disk dipping into and then out of a 1/16“, by 1mm (.042") thick. the helicopter that needs adjusting. If negative angle of attack. The stiff hard­ BOXED 16 ounces of rubber per box. you have to drive five hours to spend a wood blades, while very good for hot- PRICE: S I2 00per box. postpaid day with someone experienced, DO IT. dogging and ram-rodding, do not help in U .S A . FLYING this characteristic of the head. The NEW PIRELLI Through all flights the HB .40 PDP per­ reason all of this happens in the first SIZES: 6mm. 3mm only, 1mm thick formed flawlessly. High end power was place is because of the very high blade PRICE: $18.00 per hank good, and the carburetor’s mid-range speed, forcing the blades to operate at (approx. 1/2 Kg.) adjustment and performance was low angles of attack. The easiest solution TIMERS: KSB, Fuel & D T: S11.50ea. accurate and reliable. And all of you I talked of last month is this: Cut 1/2-3/4 plus 10% UPS. know how important the mid-range is in inch off the tip of each blade. Do it Sol« U.S. Distributor and World W id· a helicopter. accurately! This reduces the disk area a l·*. Sand 2S4 for 1981 CATALOG. As I described last month, keep the and lets the blades workat higher angles F. A.I. Model Supply damper pins in and limit cyclic throw if of attack. Another nice benefit of this PO 80* MV TORRANCE CA80V0 you're learning to fly. Intermediates can change is that there is less "parachute set up "normal” throws, and experts can effect” on descents; i.e., the ship will This is the best solution. run stop to stop. come down easier from forward flight. Do not use Super-Poxy to paint the The Bell-Hiller rotor head provides The blades will still be turning too fast, inside of the canopy! Super-Poxy will excellent cyclic control in all areas of though. lightly affect the canopy material, draw­ flight. The collective system is good for However, my latest talk with John ing the edges inward. This makes it very beginners and intermediate pilots: Simone has confirmed that there will difficult to join the canopy halves once advanced intermediate and expert pilots soon be a modification kit available to they are painted. I think R&S Perfect may want to increase collective travel for change the gear ratios from 5.6 to 1 to 9.5 Paint, or other polyurethane paint crisper collective response. Since the to 1. This is surely good news, and will would work better, but I haven’t run any pitch input bellcrank is limited to travel remedy the Super Mantis’ largest draw­ tests myself. between the bottom of the mainshaft back in stock kit form. I would encourage The collective bellcrank will interfere and the cooling shroud, you may want to all of you with a Super Mantis to order with the tank at low pitch. It should be extend the collective yoke up on the this option. (Same goes for Mantis bent forward a bit to allow full collective head. (See photo.) Be sure to rebalance owners too, as I believe the option kit travel and adequate tank clearance. the head if you do this! will fit both ships. In fact, the fixed pitch MISCELLANEOUS OBSERVATIONS Tail rotor response is smooth and Mantis needs this mod even more than There are lots of little things in my kit clean. The tail rotor compensation the Super Mantis.) that were not quite right. Some were system works perfectly, just set it up per The tail boom has been known to listed last month, here are a few more instructions. come loose easily when a beginner examples: A word about the instructions. Overall whacks the tail into the ground. After Some holes in the collective pitch they are quite complete. The great aligning the tail boom and checking belt change unit needed to be enlarged to number of photos really help assembly. tracking the forward rectangular block accept 4-40 bolts. There were not enough The written text will seem over­ of the boom should be Hot-Stuffed brass bushings or black washers. The simplified to the experienced pilot, but between the side frames. This will help collective pushrod provided was not the beginner needs to be told every quite a bit. The latest Super Mantis has a long enough. The machined slot in the step. In this respect I put up with molded ridge in the side frames to hold main rotor shaft had to be enlarged to checking all of those little boxes at the the boom more securely in position. allow room for the collective rod to exit.

AUGUST 1982 93 the end grain butt joints that occur where the panels join. These braces N O W AVAILABLE!! úNs™E strengthen the wing considerably, MOTO* but .. . "BUT, I’m not so sure that all of that beefing up is a good thing. Several years ago I read something by Bill Bogart that suggested wing breakaway tip panels. His idea was that, if the plane came in under power or made some other equally nasty landing, damage could be minimized by having the tip panel shear away at impact. In other words, if the tip panel was built structurally independent of the main panel, it could absorb much of the impact shock without allowing damage to spread throughout the entire wing. "The idea of deliberately designing a CMB/60RC W /TUNED PIPE CMB/90 MARINE W/TUNED PIPE weak point into the wing kind of goes List - $259.95 SPEC. - $159.00 List - $35995 SPEC. - $289.00 against the grain, but I think it's worth considering very seriously. The trick is to HANDCRAFTED QUALITY 5S make the polyhedral joint strong enough COMPETITION PROVEN Immediate Delivery ,to withstand all normal flight loads and the occasional hard DT landing, but Distributed by: Ph. (805) 589-0554 weak enough to give way first in the TEJA ENGINEERING, Rt. 9, Box 399N, Bakersfield, CA 93309 event of a 'kamikaze' landing. I did this on a 1/2A by first designing the wing so that the main panel and the tip panel the number one problem, but American both ended with a rib at the polyhedral has rectified this with its new option kit. joint, then just glued the two ribs to­ The factory deserves credit for recogniz­ gether. Unfortunately, I had a chance to ing this need and making it available. test the idea at last year's USFFC when NEEDED IMPROVEMENTS the plane went left at 7 or 8 seconds and 1. The little things that I listed in the came in under power. SPLAT! Both tips last portion of the article are the most were demolished, but the main panels BARON 58 (As featured in June 7 9 Scale RÆ Modeler) bothersome, time killing items. Each on survived with no damage other than a its own is not so bad, but they all add up. few tears in the covering." PLANS BEECHCRAFT BARON MODEL 58: 2 V4" Scale-85 In short: the quality control needs Those of you who are familiar with my wingspan-1000 sq in. (3) 3'x6‘ sheets $15.00 improvement. designs may have noticed that the plans Beechcraft Fin Insignia $2.00 BEECHCRAFT BONANZA A36: 2 * Scale-86 2. The radio compartment formers never call out for polyhedral reinforce­ wingspan-1300 sq. in. (3) 3'x6vy sheets $17.50. could use updates for easier access, my ments, except for gussets at the LE and All plans have easy to read isometric details and come suggestions are shown. TE. I went through the same sort of rolled in a deluxe mailing tube Add S1 50 for postage Overseas postage S8 00. Ala res add 6°o sales tax MOST APPARENT STRENGTHS reasoning outlined by Ed, plus the fact BUD CADDELL 1. If you can overlook #1 above, you that whenever a tip would break off, it 1525 Badham Or.. Dept. M. Birmingham. AL 35216 get a lot of helicopter for your money. If would usually happen right where the 205 822-4312 you can’t, then there is good potential in brace ended. Damage usually occurred DEALER INQUIRIES INVITED the kit if you are willing to make (or wait to leading edges, trailing edges, and for) corrections. spars. I figured that epoxy glue alone The bags containing the sub- 2. The nylon filled side frames and would be enough to hold the tips on, assembies were poorly marked, and landing gear bows are very nicely done. without need for further bracing. I used there were way too many sub-assembly Also strong and crash resistant. double ribs at the joints, with gussets to bags. The tail rotor pitch change linkage 3. The design size is just right for a .40 make sure each rib stayed attached to was missing. The main plastic gear power, giving a good power-to-weight the correct portion of the wing. This tracked unevenly, theswashplate uniball ratio. Engine cooling is excellent. system worked well for me. was very stiff out of the box, and needed 4. Control hookups are fairly simple Before I started using epoxy for the working in to allow sufficient smooth­ and the tail rotor mixing works very well. joint, I was able to achieve a nice break­ ness. (Slip a pencil in the hole and work That about sums it up. I hope you away tip action on an early FAI design it ’round and ’round with some oil for enjoy your Super Mantis if you have . . . sometimes both tips popped off on a lubrication. one, or are contemplating the purchase hard landing! So, based on these experi­ Most of these things are not too of one. If you take care with the little ences, here are some additional serious, and American R/C gladly sent items and assure that everything is set up thoughts on the subject. Use soft 1/4 the missing parts upon request. The smoothly, it will fly nicely and allow you inch ribs on both sides of the joint. The major parts (i.e. side frames, drive train, to expand your flight skills; all on a very soft wood will tend to shear apart easier, engine mount assembly) all fit together reasonable budget. · leaving an easy repair for Hot Stuff. (You nicely. could even take a tip from some RC CONCLUSIONS F/F ...... Continued from page 59 glider kits and use a piece of trailing The Super Mantis as advertised will edge stock for one of the ribs, so you appeal most to the advanced sport flier. BREAKAWAY PANELS by Ed Hopkins won’t even have to sand in the dihedral It does not carry great sophistication, (reprinted from the Satellite) angle at the tips.) Use gussets to make but it does not have a large sophis^ated "If you look over the plans for a typical sure the ribs stay in place, and that the price tag either. The following para­ AM A gas model wing, you'll see that the breakaway action will occur at the graphs will list what I feel are the most designer nearly always calls for plywood proper location. Small gussets at the needed improvements, and most braces to reinforce the LE, TE,and some­ spars/rib junction will also help here. obvious strengths. times the spars, at the polyhedral joint. Use ‘old-fashioned’ model cement like I was going to list the high gearing as This is done, of course, to reinforce all of Ambroid or Testors to make the joint.

94 MODEL BUILDER Make sure the tissue doesn’t overlap.. . if necessary, run a razor blade over the joint to make sure. I think you’ll find that breakaway tips will be just the ticket for windy weather flying, where the model tumbles around after landing. This is when most damage occurs . . . with breakaway tips, you can be back in the Get the complete, in-depth air in 10 minutes, usually without having story on all our quality kits to patch tissue. and accessories. NITRATE AND BUTYRATE DOPES A few months back, Harry Murphy listed some problems he'd been having BYRON in trying to fuel-proof his models by brushing butyrate dope over a nitrate ORIGINALS dope base. Apparently, some dope formulas had changed over the years, MORE THAN JUST A CATALOG! because when Harry tried to continue the same procedure he’d been using for Please send me Byron Originals catalog(s) at $5.00 each Catalog price will be credited towards my years, with the same brands, he ended initial purchase up with an awful mess on his hands. Name Phone Several people wrote in to give him Street or RFD ______Apt.# ______some helpful hints. John Oldenkamp City State ______Zip ______suggested putting the nitrate over the I have enclosed check or money order for $ Please charge to NIC#______Exp butyrate. George Aldrich suggests using VISA* ______Exp all Aero-Gloss or all butyrate, or a Iowa Residents Add 3% Sales Tax Prices Subject to mixture of these two, which he's done Change Without Notice Send to BYRON ORIGINALS. P O Box 279. Ida Grove. with no problems. Iowa 51445 Ph 712 364 3165 There was also a discussion as to whether Aero Gloss was a nitrate or a butyrate dope. My opinion is that it’s lacquer thinner for thinning nitrate, neither. About a dozen years ago, I won butyrate, or Aero Gloss. Look at your a gallon of Aero Gloss at a contest and local auto parts store and you’ll find it for K&S Hasit used it on my models. After a year or two about $8 a gallon. · • Aluminum/Brass/Copper Tubing and Shapes · Music Wire «Tools of exposure to the California sun, I • Soldering Irons · Silk · Silk Span noticed the covering was much more Pattern...... Continued from page 26 • Finishing Materials. Send 25c for brittle than ever before when using catalog. K & S Engineering, 6917 Aero Gloss. I promptly switched over to weight savings. Photos A and B show an West 59th St., Chicago, IL 60638 nitrate dope and the brittleness dis­ example of this effect. The small servos 312/586-8503. appeared. I discussed the problem one mounted outboard of the landing gear morning with Ray Harper, who had are affixed to the gear plates. This elimi­ been using Aero Gloss for his superb nates torque tubes and the additional HLG finishes. He had been in contact servo cutout in the wing center which with the factory and confirmed that the needed extra cloth or wood to strength­ formula had been changed .. . to an en the center section. The servos set up acrylic lacquer! This explained the like this weigh the same as the torque brittleness problem, as well as the one rods formerly used! This will vary de­ reported by Bob Stalick of not being pending on the servos used. Be sure to able to stick on tissue with it. use good servos. The landing gear has So, how DO you fuel-proof a nitrate been moved in (see standard arrange­ glass rods weigh, and is totally capable of finish? Out west, free flighters have ment in photo “ C” and compare with handling the loads. . . both push and G- been using a product called Fuller-plast, “ A” ) to reduce rolling weight and spar load deflection. Remember, the lighter which is a sort of bar varnish. It goes on structure. As a side benefit, the wheel the rod, the less the inertial load. The old very nicely, can be thinned with dope or cutouts are in closer, which minimizes wives tale of "matched expansion with lacquer thinners, and can be patched drag and possible asymmetrical drag fiberglass fuselages" is bunk, and is no over without problems. Dries quickly, effects. reason for using heavy glass rods. Light too. It’s not proof against morethan 25% The entire 825 sq. in. wing assembly as birch plywood is great for tank floors nitro, so I wouldn’t use it on fuselages. pictured in photo "D ” weighs exactly and any extra bulkheads. You’re not Availability on the other side of the two pounds, eight ounces, ready to bolt building a truck, you know. Nose wheel Rockies is probably non-existent. to the fuselage. The finish on this one is steering cables can be made from 20 lb. Hobbypoxy and Superpoxy clear are Monokote, which contributes to the test woven fishing line and run through very good fuel-proofers, though more weight saving. The total saving over our light vinyl tubes to eliminate catching complicated to use,asspraying is needed standard painted wing with normal them on components along the way. for best results. An epoxy paint is man­ servo and linkage, etc., was 8 oz. (one The vinyl can easily be bonded using datory on your fuselage if you use high half pound). This may be only a piddling C.A. adhesives . . . ditto for the fishing nitro fuels. Epoxy is a little heavier than amount to some folks, but the resultant line. The entire assembly weighs just a Fuller-plast, but does have the bonus of effect on rolls, snaps, point rolls, etc., is few grams, and will last for the life of the being completely waterproof. very evident. airframe, as there are no moving parts to Another alternative would be to use a The fuselage can be a real haven for wear out. (See photo "E” ) polyurethane varnish, like Pactra For­ dead weight. Thick tank floors, extra The receiver mount in photo “ E" may mula U, or Varathane. These can be bulkheads, pipe compartments, tail pipe give you second thoughts as to protec­ thinned down with regularpaintthinner. extensions, hatches, heavy epoxy fiber­ tion, but it's mounted in a foam rubber Main disadvantages are weight and glass pushrods, all add up rapidly to pro­ block and the foam block on the wing patchability. duce mysteriously heavy planes. We covers all connections and holds it firmly One last tip .. . you can really cut your have found that a tapered 1/4 inch in place. The all-up weight on the plane thinner costs down by using acrylic spruce pushrod weighs half what the in photo "D ” is 8 lbs. 2 oz. (Tipo 825).

AUGUST 1982 95 The all-up weights on the Monokoted ψ REPLICA OLD TIMERS 750 Tipos have been 7 lb. 6 oz., to 8 lbs. FREE FLICHT OR RUDDER ONLY R/C partial kits .020 CAS OR ELECTRIC POWERED The painted 750’s run from 7 lbs. 8 oz. to FULL K IT S 8 lbs. 8 oz. The 825 Tipos Monokoted THE average 8 lb. 4 oz., plus or minus 4 oz. From 1936: Painted they weigh 9 lbs. to 11 lbs. The FLYINC QUAKER 84" Span $21.50 Obviously the larger model can gain Goldberg's 1940 Sailplane From 1937 weight more easily because the surface 6 13 S cale. 36M Span & The QUAKER FLASH area is larger and the volume is much $14.95 67" Span $17.50 Additional ,020s: 30" Buzzard Bombshell. $11.95; Both are Rib, Tip. and Former Partial Kits. They greater. 38" Playboy S r.. $12.95. 31" New Ruler, .$13.95, feature Machine Cut and Sanded Parts. Full Size 36" Miss America. $12.95; 36" Clipper MK II, $14.95; Construction Plans (* Megow's Plan), and Extens What we are trying to show here is that 36" Mercury. $13.95; 30.5" Ranger. $13.95; 36" ive Building Notes. For Free Flight or R/C, they you can build a lightly loaded model Super Buccaneer. $14.95; 30" Request. $12.95; both meet all SAM FF and R/C requirements. 35" Twin Cyclone. $12.95: 36" Cavalier. $13,95. (like the old timers) but still maintain the SERIES 50" OID TIMER 50" WINGSPAN The LONG CABIN’ smoothness and speed that we like on AIR TRAILS SPORTSTER. $39.95 78" Span. Classic Cabin. Plan Included. the present designs by just keeping the POWERHOUSE. $39.95 1937 $20.00 .09 TO .15 3 CHANNEL R/C weight down. The big plus is that it is not At your Dealer or necessary to run flat out to achieve good add $2.00 per order, performance in vertical maneuvers and Jm MS&fflSS B8© 3KB5, •SSiffi&SY for UPS. Ca. Res 8044 Legion Place. No.6. Midway City. Ca 92655 add 6% for Tax. the speed-killing square maneuvers. The new FAI pattern which has been This one is Monokoted, with an epoxy epoxy undercoat is block sanded down widely cussed and dis-cussed, can be finish on the fuselage only. The weight to an almost transparent film, it’s quite flown quite nicely with designs such as on the 825 in photo “ C” is 8 lbs., 4 oz., easy to sand. At this point, all the wood these if you pay attention to the weight. and it’s all painted. The radio used in this grain and scratches should be filled. If You will find that they react dramatically bird is very light, Bantam Midget servos not, spray it and sand again. The epoxy· to power settings when the wing loading . .. Novak receiver, etc., so the weight colors are now masked off and sprayed is low . . . chop the throttle and the difference between planes is not entirely on using a quality professional spray gun model slows quickly but doesn’t sag. in the finish, but the finish is extremely in a dust-free spray booth. Advance the power and the acceleration light. The lacquer paints, when used, pro­ is immediate. Steve Durtchsi painted both this plane duce the lightest finish. The trick to The new patterns are going away from and the fuselage on the 825 in photo keeping the weight down using these the heavy bias toward rolling maneuvers ‘‘D’’. The technique used is: one part lacquers is to spray on a very light coat of and the trend seems to be directed to a talent plus one part work. This varies silver. This provides a bright, even base pattern copied from the full scale FAI depending on the scheme. The colors for color. . . the candy colors obviously schedules, which are really fun to fly and on the painted bird are silver, yellow, require a metallic undercoat as well. The interesting to watch. purple, blue, red, orange, black, white, top coat is clear epoxy or urethane, well Our parting recommendation is to green, plus a few others. Actually the thinned. We have compared the weights purchase some good quality scales, both colors are candy colors which fade from of dozens of pattern planes and have gram and 0 to 20 lb. types, and simply deep purple to lime yellow on the top of found that it is fair to say that the differ­ watch the weight of your next birds. The the fuselage. The distinct color areas on ence in a quality, light paint finish vs. a difference in performance will be a the rest of the model are also candies. Monokoted wing, stab, rudder and pleasant surprise. Before you know it We start the finishing process by painted fuselage is about 6 oz. at best, you will find yourself tinkering with squeezing a couple of ounces of Tapox and at worst, a pound or more. squares, rolling circles, snaps, and all 4-1 epoxy into the balsa areas, wing, A new finish on the market is the kinds of maneuvers the old lead sled stabs, rudder, etc. This is warmed with a Micafilm . . . we find that it is as adver­ wouldn't do. hair dryer as it is applied and the dried tised . . . light, and very strong. How­ The new snappy maneuvers will also finish is simply a crisp hard balsa surface ever, if you stick it down over the entire be good exercise for the model and that can be completely sanded with model surface and paint it, it will prob­ will help keep it slim and trim. I learned 180/220 openkote paper in about 15 ably weigh the same as Monokote. this from the Richard Simmons Show!· minutes. A good quality white epoxy Our finished weights on these air­ undercoat is then applied using a roller frames have been quite good using the or a gun. The well known hobby brands above mentioned techniques. As an Electronics . . . Continued from page 25 such as Hobbypoxy, Super Poxy, etc., are example, we have seen a number of 750 just fine. We use Tapox brand Copon, Tipos which weigh 3 lbs. 8 oz. less last milli-amp in, and thus out, of his thinned liberally . . . it’s a commercial hardware. These were all Monokoted. motor batteries, the charging to take hobby product for boats or industrial The Hippo’s (825) weigh 4 lb. 4oz.,done lace in the shortest possible time. I use. When dry (24 hours), the white the same way. now that this is a critical item with the 12th scale R/C car competition drivers also, as they have to start off with a full DICK HANSON MODELS charge if they expect to go the required Our Flying Hippo 825 is pretty light on his feet.We number of laps. Frankly, I do not have have supplied a number of these to active competition that kind of experience with Ni-Cd fliers.internationally as well as here in the U.S.A. charging, though I know that some The new 750 sq. inch Tipo also gets around. According rather elaborate chargers are seen at the to the feedback we recieve.both types are doing local track to accomplish the desired extremely well at local,regional and national contests. results. Custom built airframes of these and other winning There are some basics to remember, designs is still our main business but we are adding though, one being the matter of termi­ nology, just so we all speak the same kits this year of the Tipo's and two new designs— language. In the matter of charging The Formula 750 and the "Cheep Trick',' A 625 sq. rates, there are four common ones in inch rear exhaust 40-46 Bird. use: If we can help you too-Call or write- Trickle — .02% of the battery capac­ DICK HANSON MODELS ity. "Hippo'' Tee shirt with each order shipped 5269 LUCKY CLOVER LANE Overnight, or Standard — .1% of Phone: 1801) 261-1402 MURRAY, UTAH 84107 capacity; the usual charger furnished with our R/C systems. 96 MODEL BUILDER Quick — .3% of capacity, normally ★ ★ ★ requiring 3 to 5 hours. I hadanotherqueryfromdown“ South Fast — 1 to 4 times capacity, taking of the Border". . . my good friend Benny one hour or less. Sanchez down in Mexicali is planning I mention this because we R/C’ers some long distance cross country tend to use ‘Quick’ and ‘Fast’ inter­ R/C’ing, and wants to know how to changeably, though we most often connect external batteries to his trans­ mean ‘Fast’. mitter to extend the operating time. For An important thing to remember a final destination, I would recommend when dealing with battery chargers of chips, guacamole, and margaritas by the MODEL SUPPLY the automatic kind, which Phil specifi­ pool at the San Carlos Hotel in cally asks about, is that they are asked to Ensenada. . . measure and react to very small voltage Since most R/C transmitters work off a 'To u r Supplier, changes, which makes them critical, 9.6 volt, eight Ni-Cd cell battery, we will Not Your Competitor" complicated, and expensive. Another use that as an example. Actually, the • Stocking over 150 connections and procedures are the culprit that complicates matters is tem­ lines of merchandise perature . .. both that of the cells, which same, regardless of the voltages used. then feed erroneous information back There are two common circuits in use, • Fast service to all parts to the sensing circuits, and within the per the diagrams. Notice that in each of the USA and also on electronics themselves, in which case case, the internal battery is connected to foreign orders their own calibration goes off. There are the center section of a two position • Special cash discounts temperature compensated IC’s and switch, and is thus switched between the up to 10% other components.. .at greatly elevated charger when the latter is connected, • Freight allowances up to 5% prices, which require more complex and the transmitter electronics. Con­ circuitry, greater calibration accuracy, necting an external battery requires only • New Golden Dealer program and on and on to more $$$. bringing in the proper voltage and • Weekly mailer There have been some attempts by applying it to the transmitter side of the • Phone orders encouraged some manufacturers, such as M.E.N., switch. which Phil mentions, to develop the In this configuration, the transmitter DEALERS ONLY better charging mousetrap. I know that will operate normally, until the outside CALL US AT 312-759-1955 that one in particular was stopped voltage source is connected, at which J during early engineering stages, when it time it will come ‘‘ON’’,even though the MW 779» was decided that it would not be a switch is in the "OFF" position. marketable item due to price. No infor­ How to get the voltage in is another MIDWEST MODEL 1 mation or units are available. matter,and will dependontheparticular SUPPLY CO. At the current state of development, I transmitter. If you have one with a multi- > »—■»» fc ■ MMI 1»m IW believe that the best and least compli­ contact connector accessory socket on A FULL LINE MODEL DISTRIBUTOR cated way to go is with one of the digital the bottom, and it has a couple of open SERFINL DEALERS FOR OVER 39 YEARS voltmeter equipped chargers available pins, you can come through there. If V. J from Leisure Electronics and a couple of not, you’ll have to either make a hole,or the other 1/12th scale car makers. Be possibly temporarily remove a screw or sure that your batteries are the fast unused switch and come through that It's incredible, but here's charge type . . . all Ni-Cds are not. Read hole. If this is to be a permanent installa­ ο true Epoxy Point the battery and charger manuals care­ tion, of course, a socket can be installed that's Pre-mixed ... fully to determine the recommended wherever space is available. procedures, and follow them to the Now, for the battery source. You can in the con!! tenth of a volt. If possible, a cooling off make up a pack of Ni-Cds, figuring period, with a touch-up just prior to about 150 milliamps per hour usage for launch seems to help also. the average transmitter. Or, you can And finally, we will ask for comments make up a voltage regulator circuit per and suggestions from those more ex­ the schematic, and operate it off a 12- perienced in the fie ld .. . volt auto or R/C starter battery. You While on the subject of books, there is could make up a pack of alkaline “ D" another publisher you should know cells, using seven of them, to get 10.5 about: TAB Books, Inc., Blue Ridge volts, which will operate most trans­ Summit, PA 17214. In its latest catalog. mitters for at least 50 hours. Don’t forget Tab lists a number of model radio also, that should the external supply get control books by such well known used up, you still have the internal authors as Edward L. Safford,and George battery to work from. If you wish, a switch can be installed in Siposs. But the list of interesting publica­ the external supply cable, to turn the tions doesn't stop there; there are many system on and off without unplugging it. books on general aviation, hobby elec­ The usual R/C wire is good enough for tronics, electronics test equipment, the short internal connections in the electronics technology, and small gasd- transmitter, but use heavier wire, such as line engines. There are many books on lamp cord, for the external supply to subjects outside our hobby, but still of keep down the voltage drop. Be sure general interest: automotive, comput­ that the proper polarity is maintained, or ers, marine and boating, solar and it is "Adios, Transmitter” . energy, woodworking, etc. TWO FOR THE MONEY... No pot life · No mixing · Fuelproof Tab books are found in general book There are so many, many goodies Lightweight · Super tough · Extra Flexible stores, and on the bookshelf at electron­ available to we R/C’ers now that just a ics stores here in California, you might very few years ago were merely dreams. take a look next time you are in one of One of them is the number of reliable these places in your area. Or write to the twin-cylinder engines now being made COVEFtITE address above for the latest list of titles by a number of firms, both foreign and 420 Babylon Rd.. Horsham. PA 19044. USA and prices. domestic. They come in various sizes AUGUST 1982 97 peared recently. This can damage a servo amplifier, but even worse, it can run down the receiver battery long before its time, leaving you up there in F L Y EL the wild blue yonder without enough electrons to get you home in one piece. Probably the greatest culprit in this • VL-101 Electric propulsion system respect is the throttle servo, and the fact shown— rising Hytork 48 motor and that the exact amount of throw required planetary gear box, Si-3 switch & by the throttle is not always available charging jack, and B-33L fast charge from the fixed amount obtained from ni-cad flight battery— total weight the servo output arm. What is needed is 2*/2 oz.— will power models 25 to an adjustable length servo arm, fur­ 50” wingspan weighing up to 10 oz. nished by some of the manufacturers • Send 50c for latest catalog showing who recognize this problem, but so far, full line equipment & accessories. not available from all of them. However, • Hobby dealers send for information. relief is spelled "Robart” , in the form of its Super Trim Arm, which is variable in length, plus a large number of adapters by means of which it can be used with most popular servos. A sketch of the arm YES-StR, YES-8IR, THREE BAGS FULL and how it works is included. The Super Trim Arm is Robart No. 397, four for $1.98, while the Adapter of your choice 4-™ &&S A Mo vu is 98c each. Tested and re co m ­ mended. .. HATS OFF TO WORLD ENGINES For some months, World Engines, Cincinnati, Ohio, ran an ad asking that we "Help us find the R/C Service Expert 5 / ί / η ε or P*./c£ I in your area” , and offering schematic WALT MOONEY NOW OFFERS 4 b a GS OF PEANUT SCALE PLANS diagrams of its R/C equipment to "tech­ a l l w e l l t e s t e d d e s ig n s , at o n ly tsoo e a c h nical type model builders who fix R/C Ea c h b a g f e a t u r e s f o u r t e e n p e a n u t p l a n s . systems of club members and others in their respective areas” . ONE OTHER, PLUS PHOTOS ANO INFORMATION Well, I for one think this is great, and SENO ti.o o FOR COMPLETE LISTING ANO SAMPLE PLAN TO: wish to thank John Maloney and crew WALT MOONEY, 2 · 12 CABRILLO MESA OR on behalf of all of us ‘tinkerers’ out here. Now I am the last one to recommend SAN OlEGO, CALIFORNIA * 2 1 2 3 ^ gambling an airplane and the people and property in its vicinity to a question­ sharing only a common 4.8 volt, 1.2 amp able radio, and the experts on a certain Ni-Cd supply. system are those who have the most VINTAGE R-C PLANS Each circuit is metered independently, experience working on them. But there allowing easier diagnosis of each plug are some rather basic things to electron­ condition and demands. A single switch ics, and all inoperative radios don't is used which turns off the entire unit, necessarily need a trip back to the allowing you to leave the plug connec­ maker, with the subsequent expense in 9 FT. WING SPAN tors in place till you are satisfied with the time and money, to get them back in the ALL RIBS Θ FULL FORMERS SHOWN ON PLANS 11 operation of the engine and you are air. Toward this end, a schematic diagram p l a s t ic e n g . c o w l s % 9.90 p r . certain that a re-start will not be neces­ is a tremendous help to a technician. I CLEAR GUN BLISTERS $ 6 .6 0 PR sary. Obviously, each section can be sent for mine, it arrived promptly the 4 LARGE p l a n SHEETS — Plans $16 95 used alone, so that either one can be next week, and has been filed in the 6 f t . WING SPAN MODEL P B Y -5 A used to start your single-cylinder mills. information file until the day it is needed ENGINE COWLS t 6 .5 0 PR. P l a n s $ 12 9 5 The Twinn Driver comes complete to help someone make it to that contest GUN BUSTERS I 4.50 PR ADD |2 ^0 POSTAGE with two “ HEADLOCK” glow plug he has been waiting for. CATALOG-OVER_____ 50 PLANS 11 00____ DEALERS WRlTE connectors and a multi-contact plug for If other companies have similar pro­ WORLD WIDE attachment to the driver, which allows grams, we’d like to hear about it so we SID MORGAN you to assemble cables with whatever can spread the word. · 13157 ORMOND »BELLEVILLE , MICH. 48111 U.S.A. connectors are most suited to your needs. and types, but they all have one thing in The Twinn Driver is manufactured by Snow White .. . Continued from page 20 common, they require power for two C & D Enterprises, 10042 Merimac Dr., glow plugs during starting. Huntington Beach, CA 92646, and is aviation Bill Effinger has, but to give There are any number of ways to priced at $89.95. There is a nice descrip­ credit where it’s due! furnish this glow plug power, but those tive brochure you should write for. Tell I believe Joe would have given the of us who have experience with elec­ ’em MB sent you. Snow White to anyone who wanted it, tronic supplies, glow-drivers, plug- DON’T JAM IT providing they could come up with a set drivers, or whatever name they bear, can One of the avoid-at-all costs rules dur­ of plans. After all, he gave her to me... attest to their superiority over a plain 1.5 ing a R/C system installation is to never all I did was ask! volt battery, especially for those engines permit a servo to continue to operate Now take a look at page 47 of the June that are a little critical to get going. C & D against a mechanical stoppage. To do so '82 issue of Model Aviation and you will Enterprises, manufacturer of the very makes the servo pull some pretty stiff see where Bill Effinger said the Snow popular Glo Driver that bears its name, currents, as much as half an amp for a White was not a great flyer, powered now has available a driver for twins, two normal servo, and surely much more for with the Brown Junior. Bill would be completely independent driver circuits, those high power jobs that have ap­ more than correct in his estimate of

98 MODEL BUILDER Ace R/C, Inc...... 66 INDEX TO ADVERTISERS Rhom Products...... 64 American R/C Helicopters...... 4 Sailplane Factory, T h e ...... 78 Associated E le c tric s ...... 89 Historic A via tion...... 1 Satellite City ...... Cover 3 Astro F lig h t...... 68 Hobby H o rn ...... 102 Sig Mfg. Co., Inc...... 62.63 Bavarian Precision Products...... 91 Indoor Model Supply ...... 101 Francis Smith's Ship Y a rd ...... 77 Dave Brown P roducts...... 88 J.V.S. P roducts...... 87 Sterling Models ...... 70 Byron Originals ...... 71.81,95 K & B M anufacturing...... 5 Sullivan Products...... 72 Bud Caddell Plans...... 94 Kraft Systems, Inc...... 65 R.C. Sweitzer Enterprises ...... 90 Charlie's R/C Goodies ...... 83 K & S E ng in eering...... 95 Tatone Products...... 86 Contempo Hobby Products ...... 67 Kustom Kraftsmanship...... 88 TEJA Engineering ...... 94 C o v e rite ...... 97 Eldon J. L in d ...... 80 Top F lite ...... Cover 2 Jim Crocket Replicas ...... 101 McDaniel's R/C ...... 84 Technopower II ...... 73 Davis Diesel Development. Inc...... 92 Midway Model C o m pa ny...... 96 Uber Skiver Knives ...... 103 Delta Mfg., Inc...... 66 Midwest Model S u p p ly ...... 97 VL P roducts...... 98 Detroit Expo IV ...... 85 Model Rectifier C orp...... Cover 4 Wardcraft Marine ...... 86 Dodgson Designs ...... 82 Walt Mooney Peanuts...... 98 W.E. Technical Services...... 68 Du-Bro Products ...... 79 Sid Morgan Plans...... 98 Williams Bros...... 93 Dynamic Model Products ...... 86 Jerry Nelson & C om pany...... 82 Wilshire Models ...... 83 Electronic Model Systems...... 74 Northrop Real Estate...... 64 N ickZ iroli ...... 65 FAI Model Supply ...... 93 Octura Models ...... 87 77 P ro d u c ts ...... 92 Flyline Models, Inc...... 90 Pacesetter Products ...... 66 Fourmost Products...... 76 Peck-Polymers ...... 102 HOUSE ADS Fox Mfg., Inc...... 69 Pierce Aero ...... 78 Classified A ds ...... 99 Futaba Industries...... 3 John Pond O.T. P la ns...... 92 Full Size P lans...... 100.104 Dick Hanson Models...... 96 RCH Hobby Marketing...... 74 Mammoth Scale F ly -In ...... 85 Hayes Products...... 75 R/C Modelle ...... 84 R/C Bees-Model Builder Contest .. 104

FOR SALE: R.C.M 1965 thru 1981 $150.00; CLASSIFIED ADS M.A. 1975 thru 1981 $50.00; R.C.M & E 1963 thru 1975 $75.00; R M. 1970 thru 1981 Non-commercial (personal items) rate is 25 cents per word, with a minimum of $3.00. $50.00; Aeromodeller 1971 thru 1981 $40.00. Commercial rate is 40 cents per word, with a minimum of $5.00. No advertising agency All magazines in volume with binders. All for discounts allowed. $350.00 Enrique A. Blandino. 549 Washing­ A ll ads are payable with order, and may be for any consecutive insertion period specified. ton St.. La Cumbre. Rio Piedras, PR 00926. Name and address free, phone number counts as two words. Send ad and payment to: MODEL BUILDER, Classified Ads, Box 335, 621 West 19th St., Costa Mesa, CA 92627. MONITER 72-73,75-76,53-54 Mhz with a RC Frequency Receiving Converter into your AM radio. Converters. PC boards, parts, WANTED — OLD MODEL ignition engines, EMBLEMS-Direct from manufacturer Swiss schematics, info from: John R Lange. P O. cars, elc Paying top dollar Bill Simpson, 7413 embroidered. Custom made to your design Box 1395. Melrose Park. IL 60160 Via Lorado. Rancho Palos Verdes. CA 90274, Send sample or sketch and quantity needed (213) 377-3532 for free quotation. David Haemmerle & Sons. Entire complete collection of beautifully Inc., Box 711 J. West New York, NJ 07093. bound Model Builder magazines in 12 vol­ umes $300 Entire complete collection of WANTED: A J. Interceptor, Hornet, and small American Aircraft Modeler in 16 beautifully hand launch Interceptors; originals or repli­ bound volumes $352 Phone (408) 266-9796 cas. top price. L.J.B, P O. Box 997, Ocala. FL GOLDWING canard pusher p-nut ultralight, 32678 2-minute flights; plans $1 00. SASE for list: FOR SALE: Anderson Spitfire, Ohlsson 60. David Aronstein. 50 Pasture Lane, Pough­ Ohlsson 29 blue head, Forster 29. and one keepsie. NY 12603. Diesel as a group. $500 Phone (408) RARE STERLING Μ-Series Fokker D-VII and Doulgas C-47 Kits. NIB, $10 each or trade 264-5519 Twelve full pages of ready-built models plus Buffardi. 400 Windward Passage. Slidell, LA used equipment bargains in the last issue of RET has urn1 The Trail Blazers — full size 3 70458 "Hobby Swap News," Buy-Sell-Trade, your views — and others: Those Flying Aces first ad free (35 words max. B&W photo $2 models that are classics SASE for list. RET OLDTIMER MODELS — Everything for the extra) with subscription $10/yr. (10 issues), Plan Service. P.O. Box 7893, Midfield, AL rubber modeler Over 300 plans, balsa, tissue, $19/2 y r, $27/3 yr Add $3/yr for 1st class 35228 condenser paper, absolite film, rubber and postage, (required for Canada & Mexico), MC lots more Send $1 for 9 page catalog, refund­ & Visa accepted. Hobby Swap News. Dept PEANUT & WALNUT SCALE PLANS Send able with first order. P.0 Box 913. West­ FLC-32, P.0 Box 834. Santa Maria, CA SASE for list or $1.00 for sample plan and list minster, CA 92683. 93456 David Diels. Box 101. Woodville. OH 43469 flight performance if the large and heavy For you under 40 types, who may not “ redesigned Snow White 20” . O.K.? Snow White was indeed powered by a know about “ Beauty ” events at contests, Now look at the plans pictured in this Brown. The fact is, it was powered (and I have to mention that even "Beauty” Model Builder article, I say to you, there very ably) by a Forster "99” . Surely, the models hadtomakequalifyingflights. In is no way that the "20” is a copy of the designer would remember that! (Sal other words, you had to fly to win, it was Snow White, re-design, reduced or Taibi recalls that Joe did try a Brown, not a static display! otherwise! You be the judge! As far as I found it was inadequate, and went to the Let’s turn to page 107 of this M.A. am concerned, one is Snow White and Forster 99. Sal says it was a fine flier, wen) feature, paragraph two, where it states, the other the Wicked Witch! Joe’s reason for not flying Snow White the full sized Snow White has a 90 inch There can be no doubt about the every weekend and in open free flight wing span. Wrong again, it has an eight authenticity of the Snow White plans competition was a simple one. The ship foot wing span (that’s 96"). herein, they were drawn by taking apart was a “ Beauty” model and he didn’t Last, but by no means least in my case the only Snow White ever built and want it smashed up, or end up in the for Joe Raspante, turn back to page 46 tracing the parts. trash as did most competition ships and take a casual (not careful and close) “ MIRROR MIRROR O N THE W A LL.. . (then and now). look at what Bill Effinger calls the W H O IS THE FAIREST OF THEM ALL?”

AUGUST 1982 99 No. 3822 SIMPLE SIMON S3.50 No. 10813 BUTTERFLY ONE $1.00 FULL SIZE PLANS SERVICE Really simple 1/2A sport R/C for 2-4 ch. This little rubber powered ornithopter Including reprint of construction article Uses Ace foam wings. By Frank Roales. looks like a big butterfly. Ken Johnson.

(if any) No. 3823 PEANUT HOT CANARY $200 No. 1081-C.P. N. AMERICAN B-25 $4.00 Sharp staggerwing biplane racer, big for a Miniature Aircraft Corp. 1/2"-scale kit plans. All printwood parts duplicated. No. 8821 BOTHORNE $1.50 Peanut but meets rules. By Bob Sweitzer Tailless rubber ship for Boston Cabin or No. 1081-0.T. OLD SQUARE SIDES $4.50 Hawthorne Flying Wing rules. B Wainfan. No. 3824 1912 BLACKBURN $4.00 Very realistic sport cabin from July '40 Free flight 1-1/2 inch scale model of fa­ Air Trails. Nice for R/C. John Sprague. No. 882-0.T. SNOW WHITE $18.95 mous antique monoplane. By Sid Miller. Joe Raspante's famed 8 ft. span Beauty No. 9811 SCALE EDO FLOATS $250. winner. Plans direct from original model. No. 382 O.T. TWIN PUSHER $3.50 Designed for Sig Cub, these floats fit any Record setting rubber ship from Aug. '36 two-inch scale model. By George Wilson. No. 7821 MONARCH $5.00 Model Aircraft Builder. Ralph Kummer. R/C 6 ft. span swept, flying wing glider No. 9812 STINSON VOYAGER $2.50 with fuselage, fin/rudder. By Bill Young. No. 2821 ACRO SPORTSTER 40 $6.00 One-inch scale rubber model of classic Sport/pattern low winger, open cockpit, design. Span 34". A.P. 'Speed' Wilson. No. 7822 WHITEHEAD NO. 21 $4.00 tail dragger, .40 powered. Peter Neuer. Possible pre-Wright Bros, flyer in rubber No. 981-O.T. BOOMER BUS $4.00 F/F, 40" span. It flies! By Ken Johnson. No. 2822 MESSERSCHMITT M33 $200 Another Henry Struck classic, from Feb. Semi-scale, "bathtub" style, CO 2 pow er­ 1941 Air Trails For .19 to .29 ignition. No. 782-C.P. J-3 CUB $2.00 ed sport free flight. By Jack Headley. An official 1942 Piper Aircraft Corp. No. 8811 MINI BIRD $4.00 Two-meter version of Dave Thornburg's plan for 25" span rubber scale model. No. 282-0.T. VIRGINIA CHAMP $5.00 well known Bird of Time. Mark Smith. Little-known, but sharp Class C pylon, No. 782-0.T. MOFFETT WINNER $3.50 April ’40 F.A., 60" span. By Bob Little. Roy Nelder's most functionally beautiful Klo. 881-C.P. SEVERSKY P-35 $4.00 1940 winner, from Nov. 1940 A ir Trails. Miniature Aircraft Corp. 3/4” -scale kit No. 1821 Model Builder RAVEN $5.75 plans. All printwood parts duplicated. Latest in a long line of tailless R/C sail­ No. 6821 DUCKLING $3.50 planes, span 110", 2-ch. By Dave Jones. All sheet wood R/C flying boat for mini No. 881-0.T. TAIBI'S HORNET $7.50 radio and .02 .049 engine. Ken Willard. Sal Taibi's 1940 design for Forster 99 en­ No. 182-C.P. SUPER G SHARK $3.00 gine. Span 88", chord 16". 1300 sq. in. An historic two-line controlled model of No. 6822 ASCENDER $4.00 classic lines; one of many by Vic Stanzel. No. 7811 SPINE-TAILED SWIFT $250 Smooth (lying, trike geared, tractor can­ Contemporary 1/2A pylon racer designed ard. Ace foam wings, .15 .25. Skip Ruff. No. 182-0.T. HI-HO $3.50 to win. Easy glass fuse. Jim Gilgenbach. A 1940 convertible stick/Wakef ield; uses No. 682-0.T. THE HERALD $4.50 demountable cabin/pod. By Ed Lidgard. No. 7812 BIG PROP CHARTS $1.50 Pod/boom, twin ruddered, Class B pylon Charts for determining best engine and gassie fro m May 1941 A T . Gene Chaille. prop sizes for the "biggies". John Burns No. 12811 XINGU $4.00 No. 5821 BUCKER JUNGMAN $15.75 High performance F3B type sailplane of No. 7813 GREAT EXPECTATIONS $1.50 Aerobatic quarter-scale model for geared contemporary construction. Ken Stuhr. West Coast/Mooney Bostonian design for 90, 1.2 direct, or Quadra. By Gene Pond. beginner or expert. By Ernie Wrisley. Να 12812 A.J. INTERCEPTOR S1.00 No. 5822 CRYSTAL AMANITA $3.00 Replica of the famous Jim Walker folding No. 781-0.T. BERRYLOID WINNER $5.00 A ll sheet bass and balsaw ood 1 /2 A sport wing catapult glider. By Dave Th orn burg . C/L for all skill levels. By Tyrone Parker. Winner of the coveted best finish trophy at the 1938 Nationals Harold Coovert. No. 12813 SUNDAY FLYER $2.50 No. 582-0.T. CONTEST WINNER $3.00 Easy beginner's 1/2A sport F/F. One-day No. 6811 CURTISS P-40 $10.00 High climbing diamond fuselage rubber assembly. Ace foam wings. Ken Willard. Exact-outline giant/sport R/C scale for ship from '38 Air Trails. Henry Struck. .90 power, 80" span. By Art Johnson. No. 1281 O.T. FOLLY II $4.00 Minimum of $5.00 on credit card orders. No. 4821 LOCKHEED VEGA $7.50 Beautiful aerodynamic lines on this 6-ft. Exact 1-1/4" R/C scale model of Jimmie gas job. Pic in July '37 MAN. Rod Doy la Complete list of over 400 plans, 50ť Mattern’s Vega, 50" span. Walt Musciano. NEW ORDERING INSTRUCTIONS No. 11811 WACO TAPERWING $17.95 No. 4822 AIR XX "PYLONER" $1.50 Sensational 1/4-scale R/C model of Bob Price includes 3rd or 4th Class mail. For air­ AIR XX (20" Antique Indoor Rubber) of Lyjack's Waco. 2.5-3.5 eng. Larry Scott. mail or First Class (Priority) in U.S., add typical O.T. gas model. By Ken Johnson. 25% of total order. For Overseas Airmail (in­ cludes Canada and Mexico), add 50% of to­ No. 1181-O.T. HALF-PINT $2.50 tal order. Remit by International Moner Or­ No. 4823 SCHNIEDAIR $2.50 Tiny (24-3/4" span) pylon free flight gas Composite of typical Schneider Cup rac­ der or U.S. funds drawn on a U.S. bank on model for Atom or .020. Louis Garami. er, for C O j or rubber. By Walt Winberg. Overseas orders. Postage paid for APO and FPO orders. Master Card or VISA accepted. No. 482 O.T. TIGER SHARK $6.00 No. 10811 HEATH PARASOL $7.50 Include card number, expiration date, and Enlarged, R/C version of nostalgic Victor Lightweight quarter-scale for .60 power. signature. Span 94” , two-piece wing. Bob Kitson. Stanze! G liner, 61” span. Harold Lanser. CALIFORNIA RESIDENTS ADD 6% TAX. MODEL BUILDER PLANS SERVICE No. 3821 GREAT LAKES 2T-1E $17.95 No. 10812 NAVY PT BOAT $3.00 One-fourth R/C scale model of popular Built on Dynamic's 1/2" scale. 39" fiber­ 621 West 19th. St.. Box 335 Classic Erabipe. 3 sheets. Frank Corny ns. glass hull. Gas or electric. By Art Bauer. COSTA MESA. CA 92627 0132

Now that I have the debate out of the career army officer, and I recall he was good friend, Tom Feicco. I couldn’t way, let's talk models. more concerned about the war we had believe my eyes when I saw Joe Ras- I first saw the Snow White in a book at just entered, than model airplane books. pante’s name in the caption. The next the Baltimore, Maryland Public Library, (I got the book anyway). In this book, on day I called Joe and asked if he still had when I was a boy. The book in which it the first page, was a full page photo of the plans. My heart sank when he said was pictured was, The Theory of Flight Joe Raspante's “ Snow White” . It was no. He explained the drawings were by Air Age Inc. This was late in 1941. I love at first sight. However, some 36 done on brown paper bags, and after the know it was in December 1941, because I years would go by before Snow White model was completed, they were dis­ had asked my Mom and Dad to give me would enter my life again. carded. I understood how that could this book as a Christmas gift. This was not It was the summer of 1977, I was happen, because in my own miss-spent just any December, way back when, but reading a 1938 copy of Model Airplane youth, I used to tape pages of loose-leaf December, 1941. You see, my Dad was a News, that belonged to a collection of a notebook paper together to make sheets

100 MODEL BUILDER large enough to draw plans on. I de­ signed and built a lot of airplanes back MARK V INDOOR MODEL SUPPLY then, and if my life depended on it, I OUTDOOR l INDOOR FLYERS FOR THE NOVICE couldn’t come up with a set of plans HAND DRILL/WINDER SELECT SATIN SMOOTH SHEET BALSA today. Needless to say, I felt great Yard Birds w Sp*n 3 IM S G lid e rs 12 So·« disappointment. However, Joe’s next statement was, “ I think I still have the Snow White somewhere up in the attic. $ 28.00 If it's still there you can have it.” Plus Freight Burning rubber all the way to Joe’s house, I arrived before the phone line had cooled off. There, in Joe's immacu­ ♦ HEAVY DIE-CAST NYLON CASE ♦ METAL GEARS late shop (more about the shop later) ♦ ADJUSTABLE GEAR TOLERANCE was that beautiful ship I had fallen in ♦ BALL THRUST BEARING ON SPINDLE INDOOR ENDURANCE RUBBER MODELS love with so many years before. It was Catalog - S1.00 like going home again. My thoughts THE EASYB 2 PARLOR 3 PARLOR PLANES filled with boyhood memories of the JIM EROEKET REPLIEAS Sunday contests at Model Haven. Nos­ P.O. BOX 12600 talgia dripped from every pore. The next FRESNO. CA 93778 step was to figure out how to draw an authentic set of plans, without destroy­ distance between the rib and the light. ing that magnificent old girl. The resulting shadow will give you a Snow White sat on a drawing table, in perfect rib outline, of whatever size you • Filll S·/» Pl*n% • F «II S · / · P*op J'P my studio, for two months or more, want. This is an indication of how the • Pietu«· niuMireied • C o n d e n s e ' P a pe · while I contemplated my next step. inventive mind of Joe Raspante works. • U U t* L iq M B a lsa Finally I came to the agonizing conclu­ The tail group was next in line for • M ini BeannQ • Micro Washers sion; the only way to save Snow White disassembly. Using the same technique • Pněli· Rubbe· for future generations of modelers was as with the wings, it proved to be much • M.gh Performance to systematically destroy her! The next simpler to put down on paper. While The World S 1st morning, I called Joe with the bad news. we’re talking about the tail, check the Ornithopter Kit1 Fascinating' Without any hesitation he said, "Do really neat Track and Key method used 2 Minute Flights whatever you have to do, but let’s make to align and hold it in place. The only WEIGHT 1/8 OZ her live again." rubber bands needed are between the INDOOR MODEL AIRPLANES by Ron Williams The model was in fairly good condi­ two hooks, on the bottom of the sub­ 264 Pga. and O r * 200 Illustrations plus 2 FREE tion considering it had spent the past 20 rudder. Full Sire Plan SNoota for I M S Easy >aB' til .65 INDOOR MOOEL AIRPLANES by Law Qitlow years or so in the attic, with tempera­ The most difficult task was taking apart 46 Pgs A Over 100 Illustrations (ropclnti 83.85 tures as high as 110° in the summer and the fuselage. You can learn a lot about a PEANUT POWER by Hannan. 80 Pgs « 95 INDOOR BALSA PACK S6 95 P NUT PAC K 86 85 as low as 0° in the winter. At one point, it modeler by taking apart his airplanes. ROLL OF MICROLITE COVERING ______83.25 had even been used as a tricycle by his The strip planking was just unbelievable, CONDENSER PAPER *2 SO —WASHEPS «1 SO RUBBER LUBE *1 SO-CEMENT 11 SO grandson! There was almost no silk at all every strip was carefully tapered to an THRUST BEARING Naw Tiny .50 New Dual 1.00 on the open frame work, none at all on exact fit. There was not one trace of NEW MARK 1 W INDERS-16 1 ______H U S the wings. The exposed wood was in wood filler. All the fillets were carved NEW SMOOTHIE WINDERS-61 *3*5 very baa shape, dry, broken, it almost balsa wood. All the markings on the ship 6.1 W in d * · o n ly *1 »5 with *25 On**· ALL ORDERS · KITS ADO 10% POSTAGE crumbled at the touch. were hand painted. No masking tape or j Minimum postage SI.50 The wing seemed a good place to decals were used; the pin stripes were start, so after selecting the one in the hand painted. There were traces of an 1962 16 PG. CATALOG S1.00 best condition, I carefully traced the AMA number on the cap strips. They too BOX C, GARBERVILLE, CA 95440 wing outline, both panels. The rib were hand painted, red numbers and locations were marked in position. letters with a black outline. The entire Using thinner and model knife, I began ship was covered with white silk. The removing the top planking, thereby fuselage and tail were painted all white, struction drawings using this technique exposing the structure beneath. Then the wing was painted white on the is very time consuming and often a the trailing edge and wing tip pieces planked area only, the open area of the frustrating business. In writing about this were removed, dried, and sanded. A wing was clear doped. Around the edge project, it seems things went along fairly large razor saw was used to cut through of the open area of the wing was a hand quickly. Not so! Between earning a the spars and leading edge to remove painted red line, about 1/8 inch wide. living, working on other projects, and the ribs. The spar sections, leading edge This is “ Craftsmanship" with a capital repairing my oft-damaged flying chunks and cap strips where then re­ "C"! machines, almost five years passed, from moved from the ribs using thinner. Most It was just about impossible to remove start to finish. of the ribs were in poor shape and care the strip planking with thinner, without This is the first time I have drawn had to be taken not to destroy them. In a damaging the structure beneath. So out plans for an airplane I didn't build. There few cases the ribs had to be "rebuilt” . came the razor saw again. The fuselage is no need to prove the design or check After the set of ribs was assembled and was taken apart one bulkhead at a time, that parts fit, because the parts all came sanded smooth, the wing parts were starting at the tail. The distance between from a ship we all know was a winner. I traced. None of the parts of Snow White, the formers was carefully measured at have every intention of building Snow except those made of plywood, were the time of removal, and that informa­ White, one day, but was very anxious to worth saving, so no effort was made to tion transferred to paper. This way the get this article into print, for reasons that save anything. airplane kept getting smaller and the should be very clear by now. The other day I was talking with Joe drawings kept getting larger. Using this I won't include any building instruc­ and asked how he plotted the wing ribs. method, there is no chance of missing or tions, a few pointers, perhaps, but that's He laughed, and then described an misplacing any parts. It also makes it all. First of all, this ship should only be incredibly simple procedure. I must possible to stop at anytime and pick it up built by a modeler with some experi­ confess it would never have occurred to again weeks later, without missing a ence. It is not an easy project. There me in a hundred years. After selected a trick! The bulkheads were disassembled were many times, while drawing the suitable airfoil, you make one rib out of using the same thinner, saw, and knife plans, I thought of different, perhaps balsa or even cardboard. Using a D.C. routine, then carefully sanding and easier ways to do things, but decided to light (A.C. will not work), you adjust the rebuilding where needed. Making con- make no changes in the structure at all.

AUGUST 1982 101 ever seen. It is disgusting to see some­ THE PEANUT-PEOPLE PRESENT one so neat! My shop looks as if it was bombed, and that’s after I’ve cleaned it PEANUT SCALE MODELS SPORT MODELS BUILDING NEEDS up! There is never a chip of wood or scrap of paper on the floor. Not even dust! One would think he never did a thing but clean up. PROPS. TISSUE. RUBBER. WINDERS. PRAIRIE BIRD * * BLADE SHARPENERS. BEARINGS. I have yet to meet anyone who is not KIT $5.95 PROP SHAFTS. LUBE. WASHERS. fond of this gentle, kind man. The first WHEELS. FUSE. CO-2 MOTORS. MILES M-18 ZERO BABY ACE $6.49 BOOKS. PLANS and MORE. thing that impresses you about him is, he DRUINE PIETENPOL ONE NITE 28 $6.95 CO UG AR PIPER C UB is a "gentle” man, thoughtful, always ONE NITE 16 $5.95 ADVENTURE MODELS GIPSY MOTH ANDRESO N helpful and completely unaware of his GANAGOBIE LACEY M-10 STRINGLESS WONDER $4.95 PONY BLIMP PECK R.O.G. 1-FT. R/C AIRSHIP All Rubber Powered $1.95 value to the rest of us. After all, don’t you KIT $249.00 Balsa and Tissue Kits $5.95 RUBBER OR CO-2 POWERED think it would take this type of man to COMPLETE CATALOG $1.00 hard to find items for rubber models and airships dream up “ SNOW WHITE ’? . . . I do! ★ ★ ★ P. O. BOX 2498-MB LA MESA. CALIF. 92041 ADDITIONAL CONSTRUCTION Peck-Polymers PHONE (714) 469-8675 or (714) 442-4636 NOTES BY WCN In this day and age, only the most stubborn purist would build this magni­ engine top hatch was held in place with ficent model as a free flight, to be turned an internal rubber band and hook. loose into our rapidly decreasing, un­ ' Hobby Horn* In looking at some old photos of Snow encumbered air space. For this reason, I White, just before this writing, I found I have indicated suggested R/C control WE ARE PLEASED TO ANNOUNCE the acquisition of the Hal Osborne Plans Service. Included are had omitted one detail. That was the surfaces in dotted lines. Note that S/W’s over 140 exceptionally high quality Scale plans & cover for the access panel on the right outline has not been disturbed. As the drawings. Complete list is S0C PP or see below. COMING SOON. We expect to have a Partial Kit side of the fuselage. This part was lost horizontal stab is located at about the of the Snow White Antique Gas Model (1938) years ago, so was not with the ship when mid-point of the vertical stab, I split the available in the near future. It is to be pro­ duced by Gene Wallock of P & W Model Service. I took it over. Very close inspection of moveable rudder area into two parts, Price and Availability date not known at this connected by a typical wire joiner time. Watch this ad for information. some of the old photos will show that OLD TIMER KITS: Partial and Full Kits. Snow White went through some very normally used on two-piece elevators. P Λ W Semi Kit»--Cut Pari» Kit»- -Machine Cut. 1939 Comet Zipper. 54" Span (plen incl price) $33.U0 minor changes, before her completion. The elevators, in turn, are spaced far 1938 T re n to n T e r r o r , 72" (p ln n In c l p ric e ) $20.00 The only change I would suggest is at the enough away from the center line to 1936 Berkeley Buccaneer. 84"(plan incl price) $25.50 Other P »W Semi Kits available (Plnn incl. Price): leading edge brace. The plan view of the clear rudder action, thus avoiding a 1938 Comet C lip p e r MK I . $19.25: 1937 D a lla ire wing shows the part just as on the V-notch in either surface. Naturally, the Sportster. $31.00; 1939 Scientific Mercury. $28.00; 1935 Miss America. $31.50; 1941 Playboy J r..$17.00. original. However you will note the elevator pushrod will have to be split 1941 P layboy S r . . 22.25; 1938 P ow erhouse, $25.00; leading edge brace drawn with the parts into two units. 1940 R a ng e r. $18.00; 1940 Comet S a ilp la n e , $50.50; 1940 So Long. $17.50; 1939 Korda Wakefield, $10.75 is longer... it will go from rib to rib. I Note that the wing leading edge is MIDWAY MODEL CO. Full a nd P a rtia l K ite . made up of 1/8-inch sheet laminations. 1941 Air Trails Sportster, 50" Full Kit $35.96 feel the longer brace and some glass 1938 P ow erhouse, 50" Span F u ll K it $35.96 tape would make a much stronger wing, For sturdier but light construction, I’d 1936 F ly in g Q u a k e r, 84", Semi K it ( p lan in c l) $21.50 1937 Q ua ke r F lu sh , 6 7", Semi K it (p lu n in c l) $ 17.50 but the choice is yours. Other than that suggest the trailing edge and tail surface 1937 Long Cubin, 78” . Semi Kit (plan incl) $20.00 small change, you have the “ SNOW outlines be laminated also. 1940 Comet S uilplun e, 36" fo r .020 e ngines $14.95 1935 Miss America. 36" for .020 engines $12.95 WHITE” as designed and built by Joe Though it’s too soon to know the price O th e r Mfg. Old Timer Kits--Full Kits. Raspante in 1937. or when they will be ready, Gene Wal­ 1941 Playboy Senior (Tyro), 80" Span $49.95 1938 Bay Ridge Mike (Tyro). 48" Spau(.049) $28.95 About the designer: Joe Raspante is a lock and Bob Sliff are working on the 1939 K orda W akefield (4 K ,s ) , 44" R u b b e r $16.50 most unique person. His interest and preparation of partial kits for Snow NEW Playboy Sr, 67" for geared Electric 05's. Special introductory Price (Reg $44.95)-- $30.00 talents range in every direction. Today White. These will be marketed through LEISURE 05 Geared Sys ($100.00) Spccial****$75.00 Bob’s "Hobby Horn” , Box 3004, Seal ASTRO 075 XL Sys w /re d u c e r(R e g $110) S p **$ 8 0 .0 0 most of his time is spent with his model ASTRO AC/OC Charged $69. 95)Spcclal***-*"$47.50 airplanes and boats, and his TV ham Beach, CA 90740, phone (714) 894-6223, LEISURE DIGITAL Charger ($10.00)Spectal*· $75.00 station (that’s right TV). When I first met and by the time you read this, will SHIPPING & HANDLING: 50 Page CATALO G UE Up to $8.00 add $1.50. and Plans list: $2.00 him, years ago, it was only a radio probably be available. $8.01 to $20.00 add $2.25, (A copy will be sent station. Every item in his station is hand Ah yes . . . the balance point. In the $20.01 to $45.00 add $3.00. free--when requested- $45.01 to $70.00 add $3.50, with an order. * made by him, with the exception of TV best tradition of old timer plans, it’s not and over $70.00 add $4.00. HOBBY HORN available, but try one-third, or five CA Addressees add 6$ tax. ••hobby specialties*· monitors, cameras (color and black & Send MO, V isa/M C ( ·♦ E xp) P.0. Box 300M white) and a recorder. He has a servo inches back from the wing leading edge or Check (allow up to 30 Seal Beach. Ca 90740 days for CK clearance.) (714) 894 6223 (Best system, he made, to operate a robot that at the fuselage. · COD- Exact Charges plus mornings or recorder moves, focuses, and zooms his cameras $1.50 Hdl. (Cash Only) activates on 5 rings a while he broadcasts. It’s far out! Joe was one of the nation’s pioneers in Back Bee.... Continued from page 49 Joe used “ plug-in” landing gear for early R/C flight, with equipment of his two reasons. First, it made it simpler to own design. His first R/C airplane now plank and finish the fuselage. Second, hangs in the Long Island Air Museum, at configuration could be easily deter­ he didn’t want to take the chance of Mitchell Field. He has been honored by mined from any published Aeronca C-2 dinging-up the wheel and strut fairings. the AMA on a number of occasions, drawings, such as those available from So he made two sets of landing gear, one including the AMA Distinguished Ser­ Historical Aviation Album, Box 33, without fairings for flying, and one for vice Award, for outstanding service to Temple City, CA 91780. show. the hobby since 1924. Also, he was Bob Granville also graciously supplied I was tempted to bolt the wings on honored by the Long Island Drone color information, recalling that the with nylon screws, but thought better of Society with a life membership. Ascender wings were dark orange while it. By the way, the wings of the original This man seems to be able to make the fuselage was green. were held on with a long strand of 1/4 anything he sets his mind to. He has Grateful acknowledgment isextended inch rubber (6 to 8 feet) attached to the scratch-built a four-stroke, four- to the following individuals for their front landing gear wire, over the wing cylinder, overhead valve, water cooled contributions to this article: The late and under the belly of the fuselage. The marine engine that powers a P.T. Boat Robert H. Granville and his wife Eva, engine mount is for the Forster 99. There that is nothing short of awesome! Granger Williams, Frank T. Courtney, is no suggested radio installation or His shop is the best equipped, best Tom Nallen, Henry Haffke and Jim anything else not in the original. The organized and cleanest shop you have Page. ·

102 MODEL BUILDER IN THE BEST CIRCLES, IT’S f i b e r s k iv e r

A PRECISION INSTRUMENT FOR THE DISCRIMINATING MODELER

Safe, Rear Draw-Bar Clutch Available in seven satin anodized handle colors: Precision, Instrument-Quality Materials silver, blue, red, green, gold, copper, violet. C om plete set in fitte d hardw ood case; includes Strong-Holding Advanced Collet Design uber Skiver, together with two vials containing Non-Rolling Hex Cross-Section four No. 11, and one each of Nos. 10, 12, 15, and 2 0 ...... $14.95 Deeply Knurled, Non-Slip Grip Individual handles (specify color) S5.95 Long-Life, Stainless, Vial of 6 blades (No. 10, 11, or 15) 52.10 Surgical Steel Blades (No. 12 or 20) $3.30 20

See y o u r dealer, o r order d ire c t. Dealer inquiries are invited. PRODUCTS All direct orders sent postpaid in U.S. MODEL BUILDLnTER i California residents add 6% sales tax. 621 West Nineteenth St., Costa Mesa, California 92627 M O D E L ^ BUILQER’S BIGGIES

No. 8781 R/O VELIE MONOCOUPE $9 50 Light-weight 1/4-scale for belt reduction electric power, 90" span. Bob Boucher.

No. 12781 GRUMMAN AG-CAT $12.00 Mammoth 2-1/2" R/C scale biplane, for No. 5781 UPTON'S BABY ACE $10.00 2" engines. Span 7.5'. Floyd Fitzgerald. No. 8771 GIPSY MOTH $12.00 Exact R/C quarter-scale model ot popular Exact quarter-scale (7-1/2 ft. span) R/C homebuilt parasol, 78" span. Bob Upton. No. 2811 LIBERTY SPORT $17.75 of famous H.D. bipe. By Bill Northrop. Mammoth 3-1/4” scale biplane for belt- No. 91074-0.T. BUHL PUP $6.00 No. 6811 CURTISS P-40 $10.00 drive 60 on up. Four sheets. Roger Stern. Semi scale 8 ft. span model published in Exact-outline giant/sport R/C scale for 1936 MAN. Redrawn by Phil Bernhardt. .90 power, 80" span. 6v Art Johnson. No. 6781 LOCKHEED P 38L $12.00 No. 11811 WACO TAPERWING $17.95 R/C Sport Scale, balsa and ply const., a No. 6791 CAP 20L-200 $10.00 Sensational 1/4-scale R/C model of Bob trophy winner, big, 8' span. Art Johnson. Fully aerobatic large-scale low winger for Lyjack's Waco. 2.B-3.5 eng. Larry Scott. 2 cu. in. or red.-drive engines. Jeff tracy. No. 3811 DORMOY "BATHTUB" $15.00 No. 579-0.T. TAYLORCRAFT $12.00 No. 3801 LES LONG'S "WIMPY" $10.00 Unusual 1/3-scale R/C (8' span) early ul­ Quarter-scale in 1941! Famous 9-foot de­ Lightweight R/C 1/4-scale homebuilt for tra-light homebuilt, .40-,60. Hank lltzsch. sign kitted by Miniature Aircraft Corp, electric or ga?. 9 4 " span. B y Le G ray. No. 10811 HEATH PARASOL $7.50 No. 10771 KRIER KRAFT $10.00 No. 7812 BIG PROP CHARTS $1.50 Lightweight quarter-scale for .60 power. Large R/C sport scale model of famous Charts for determining best engine and Span 94", two-piece wing. Bob Kitson. aerobatic bipe, 70” span. By Ray Nugen. prop sizes for the "biggies". John Burns.

No. 1176 0.T. LUSCOMBE "50" S5.50 Scale ship from Dec. '40 F.A. Suites O.T SEE PAGE 100 FOR ORDERING INSTRUCTIONS. or R/C Sport Scale. 90". Tom Mountjoy. COMPLETE MB PLANS LIST SENT WITH EACH ORDER. BIPLANE CONTEST

HOSTED BY: R C BEES INC. OF SOUTHERN CALIF & MODEL BUILDER MAGAZINE

IMAC RULES FOR: SPORTSMAN— ADVANCED— UNLIMITED. AMA RULES FOR STAND-OFF S C A L E (B IP L A N E ). AMA SANCTIONED; AMA AND FCC LICENSE REQUIRED. USPJA JUDGES.. .QUADRA ENGINE RAFFLE... FOOD STAND.. .PILOTS PACKAGE ... PLAQUES TO FIFTH PLACE ALL EVENTS. REGISTRATION; 8:00AM, FLYING; 9:00AM. MAX EN­ GINE; 4.4 CID, MAX WEIGHT; 44 lbs. ENTRY FEE; $15-PRE-REGISTRATION, $20-AT SITE, $7-SECOND EVENT.

SEPTEMBER 19TH-20TH, 1982, MILE SQUARE PARK, FOUNTAIN VALLEY, CA

CD: FRED BROWNS, 8037 CYCLAMEN WAY, BUENA PARK, CA. TEL. 714-522-1931 CONTEST MANAGER: B. HEUERMANN, 2365 CAMINO REY, FULLERTON, CA. TEL.714- 8 7 0 -0 8 7 5 .

PR E -R E G ISTR ATIO N : NAME...... ADDRESS...... CLASS ( S ) ...... AMA#------FCC#...... FREQUENCY (M H Z )...... (MAKE CHECKS TO R C BEES IN C )

104 MODEL BUILDER CUNNINGHAM ON “ HOT STUFFS Chuck Cunningham

\VU a ' i ” < * e *d a < * ® γ χ °

Dear Bill & Bob: I get a big kick out of designing and building new aircraft. With Super T I can get a new de­ sign off of the building board and into the air in a matter of days. This is really a big help. Chuck Cunningham, Ft. Worth, Texas; RCM columnist; President, Sky Master Industries: “ I have complete con­ As is the case with most of us, my building fidence in "HOT STUFF” & SUPER ‘Τ’. ” time is very limited. With Super T doing most of the work my latest model, a 6 ’ span Druine Turbulent, was entirely framed up in one day. The last four models that I designed and built were all large, and were all constructed with Super Τ ’. The smallest of the bunch is my 60” span “ Hooker,” the largest being my Quadra powered 8’ span Flybaby. I have complete confidence in Super Τ ’ and H Stuff doing the job. Thanks for really great products. Super T has been super for me. Sincerely,

Q APID “HOT STUFF”* IS "/*% INSTANT GLUE CONSTRUCTION Chuck Cunningham

CCHOT STUFFTJ1 ™ ORIGINAL PENETRATING FORMULA l/4 oz. y2 oz. 2 Oz. ECONOMY SIZE AVAILABLE IN CANADA

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A , ^

DISPENSE THREE WAYS! OO NOT REMOVE SAFETY LOCK INSERT i t HOT STUFF SUPER ‘Τ’ VIDEO-TIPS GAP-FILLING POSITIONABLE FORMULA ONE HOUR VHS CASSETTE v* Oz. y2 OZ. • CLUB MEETINGS 2 Oz. ECONOMY SIZE • HOBBY SHOPS AVAILABLE IN CANADA • DISTRIBUTORS LOOK FOR THE “ HOT STUFF” tm DISPLAY AND PICK UP YOUR • ORGANIZATIONS FREE TIP BOOKLET AT YOUR FAVORITE DEALER CALL OR WRITE FOR MORE INFORMATION Safe&cfe P.O. BOX 836, SIMI, CA 93062 · (805) 522-0062 / WHERE DO YOU R U N A BAJA BUGGY? Everywhere. And everyone is doing it. On deserts and sandy beaches. Through water holes and over muddy roads and ditches. From the dunes of the Baja to ramp-to-ramp jumping contests, MRC-Tamiya's R/C Buggy kits are sweeping the country. They’re the hottest R/C products offered in years. Compe­ titions and raceways are springing up. Virtually indestructible, they clear obstacles and take off- the road challenges no other cars can handle. These buggies expand your hobby enjoyment with features and engineering that make General Motors sit up and take notice. These are no ordinary kits. Where else have you ever seen actual oil-filled shock absorbers, where a change in viscosity lets you change the dampening action of the shocks? Double trailing arm front suspension just like the big cars. Adjustable suspension to permit tuning the chassis to the road conditions. A sealed, metal case protects the trans­ mission and motor, while a water-resistant box covers your radio equipment. As much fun to build as they are to run, you’ll enjoy modifying, souping up and servicing them... you’ll build them, and know them inside and out. MRC-Tamiya’s Baja Buggies are fun and best of all... you can take them anywhere... so the pleasure never ends. ■ See them at your hobby dealer... and start running... everywhere.

MRC @W TΓΧ3 A M IY A Model Rectifier Corporation 2500 Woodbridge Ave. P.0. Box 710 To get Edison, NJ the most 08818 out of your R/C cars, use an MRC- Tamiya Nickel Cadmium Battery Pack and Charger. Specially Designed to Deliver More Power And Offer More Running Time Between Charges. RC-14 6-Cell, 7.2 Volts 1200 MAH with Charger. R B008 6-Cell, 7.2 Volts 1200 MAH Without Charger R B0010 Quick Charger... plugs into your auto’s cigarette lighter to recharge your batteries within approx· imately 15-20 minutes.