volume 11, number 111 S2.50 APRIL 1981

ICO 08545 Radios That Expand Your When you're flying, there’s no Capacities. compromise for control. And when you're flying with a Kraft, you're in We'd like to introduce you to two control. radios that you’ll be able to appreciate tor a lifetime of radio Kraft radios. Good old yankee control flying. Radios that expand ingenuity. Distinguished by their your capabilities, not limit them. versatility. See these fine flight The Kraft KP5X and KP6C. instruments at your favorite hobby dealer today. Meticulously Engineered. Kraft Systems, Inc. The purchase of a radio is an 450 West California Avenue important investment. Kraft PO Box 1268 engineers understand this. So they Vista, California 92083 created two radios that can be enjoyed by the beginner as well as the experienced competition flyer. Just right to start with, and plenty of radio to grow into, without ever growing out of. Meticulously engineered. Investments of the highest quality. 7 Choices OP FUELS Each is formulated to meet the specific needs of model planes, cars & boats!

ONLY K&B OFFERS SUCH A WIDE RANGE OF FUELS Model Engine Fuel with X2C Oil K&B 100+ K&B 500 K&B 1000+ K&B SUPER SPEED For Free Flight, U-Control The most respected fuel in Year Around maximum per- As the name implies. Our and Radio Control Flying R/C flying. formance. For all ViA engines super hot fuel. Most popular fuel in R/C Boat Racing. K&B100 K&B 1000 Model Engine Fuel For Free Flight U-Control For VžA Engines A popular K&B F.A. I. with Castor Oil and Radio Control Flying fuel for Ve Scale R/C Car Formulated to meet FA I. Racing. rules... No Nitro. . . . and the Best in GLOW PLUGS KB-1L & KB-1S K&B GLOW PLUB KB· 1L (long reach) and the KB-1$ with Idle Bar (long reach and (short reach). Specially developed short reach) For controlled engine platinum alloy element makes speed. . . from a low idle up to a these plugs superior to other plugs constant maximum. For R/C. Car­ K&B MANUFACTURING . . . will withstand the terrific heat rier, and Scale Flying. of the hottest fuel. 12152 WOODRUFF AVE., DOWNEY, CA. 90241

APRIL 1981 1 APRIL

„ MODEL 1981 BUILDER volume 11, number 111 Box 335, 621 West Nineteenth St., Costa Mesa, California 92627 Phone: (714) 645-8830

STAFF CONTENTS PUBLISHER Walter L. Schroder FEATURES EDITOR W m. C. Northrop, |r. WORKBENCH, Bill Northrop ...... 6 GENERAL MANAGER OVER THE COUNTER, Bill Northrop 7 Walter L. Schroder

PASADENA, 1981 IMS SHOW, Larry Rengor. |ohn Elliot 10 ASSISTANT EDITOR John Elliot FUEL LINES, |o c K la u s e ...... 16 ASSISTANT GENERAL MANAGER THORNBURG AT LARGE, Dave Thornburg 22 Anita Northrop

HOW TO FLY PATTERN, Dick Hanson 24 ART DEPARTMENT Al Patterson “ 1 TO 1” R/C SCALE, Bob Underwood ...... 25

WORLD WAR I AEROPLANES, Leonard Opdycke 26 OFFICE STAFF R/C POWER BOATS, lerry Dunlap 30 Mary Ann Bell Edie Downs CHOPPER CHATTER, lason Wolfson .. . 32 Debbee Holobaugh PLUG SPARKS, |o h n Pond ...... 33 A. Valcarsel

R/C AUTO NEWS, Dan Rutherford ...... 40 CONTRIBUTING EDITORS R/C SOARING, D r. Larry F o g e l...... 42 Dave Brown Mitch Poling Jerry Dunlap John Pond FREE FLIGHT SCALE, F e rna ndo R a m o s ...... 46 Larry Fogel Fernando Ramos J im Gager Larry Renger CONTROL LINE, Dan Rutherford ...... 48 Bill Hannan Dan Rutherford HANNAN’S HANGAR, Bill Hannan ...... 50 Dick Hanson Dave Thornburg Tom Hutchinson John Tucker FREE FLIGHT, Tom H u tc h in s o n ...... 54 Joe Klause Bob Underwood Walt Mooney SIERRA CUP, 1980, R eid Sim pson ...... 57 IN D O O R , Ken Johnson...... 60 ADVERTISING MANAGER Walter L. Schroder

SCALE VIEWS R /C M O D E L BUILDER (ISSN 0194 7079) is published m onthly by RCMB INC . Box 335. BOEING P-12E, Peter Westburg 28 621 W est N in e te e n th S treet. Costa M esa. California 92627. Phone (714) 645-8830.

Subscriptions $25.00 per year, $47.00 for two CONSTRUCTION years. Single copies $2.50. Add $3.50 per year for postage outside the U.S. (except M EGOW 50" STINSON 105, Collector Plan ... 10 APO and FPO).

NORTH STAR, Kalevi S u n d q u is l...... 18 Copyright 1981 by RCMB INC. All rights reserved. Reproduction without permission LE POU DU CIEL-OLD TIMER, Ken Ham ilton ...... 37 prohibited. PEANUT BD-8, W all M o o n e y ...... 51 Change of address notices must be received six weeks before date of issue that new address takes effect. Send old address with new; old label preferred. Post Office will Covet Mitch Polmq, RCMB's "Electric Power" columnist, test flymq his indoor electric not forward copies unless you pay extra R C scale Sopwith Tabloid before the openinq of the IMS Pasadena Model Trade Show, postage. Duplicate issues cannot be sent. Saturday. January 10. 1981. Models could not weiqh over 24 ounces and could not ex ceed a wmq loadinq of 3 oz. per squate foot The Sopwith is powered by an Astro 020 Second class postage paid at Costa Mesa. motor with belt reduction drive and is controlled by a Cannon ladio. Larry Renqei pic. California, and additional offices.

2 R/C MODEL BUILDER Authentic 1 Scale BYRON VY ORIGINALS

A Milestone in Mode» Engineering

After years of intensive research, testing and appreciate this superb kit, we are offering a refinements, Byron Originals proudly an­ detailed information pack, complete with nounces the release of its truly remarkable materials list, owners manual, parts price 115 scale P-51 Mustang. This deluxe, super­ sheet and a miniaturized set of assembly scale kit, complete with factory installed plans and isometric drawings. Simply send Quadra engine and prop reduction system, is us $2.00 along with your name and address unquestionably the most sophisticated and and we’ll forward your pack immediately. realistic scale reproduction ever made of this Once you review it, you'll understand why famous WW II fighter. The list of standard the P-51 from Byron Originals is being features and assorted hardware alone is far heralded as the greatest engineering too extensive to attempt even a partial achievement in modeling history. description. So in order for you to better COMPLETE KIT CONCEPT! WF SPECIFICATONS 'A W IN G S P A N .... 8 5 ” Kit includes detailed fiberglass fuselage, injection m olded JF WING AREA. 1300 sq In wings and control surfaces and all necessary h a rd w a re LENGTH ...... 7 6 ” to complete model as shown. Four deluxe decal V Ready to-fly w eight.. 22 V> Ibs. schemas, three view and detailed plans and is o m e tric C H A N N E LS ...... 4 drawings also included. NO TE: Pilot, paint, covering (6 for flaps 8r opt. retracts) material and radio gear not included.

Actual photo ot model bn final w ith operational 4 1 Maim and scale »»»tructs irxttm d m q

Optional Pneumatic I ύ Μ Retract System! I (Includes all necessary f hardware) Complete Power α β · · · · ν — Sequencing gear & wheel doors Package -Operational scale Oleo struts Included in Kit! P -51 K it Scale tires & wheels I Suggested Retail Value - S in g le servo actuation Consists of: Mail Order P rice ...... I Fully illustrated in plans) — Complete drive unit & mounting plus $ 13 00 8h*pp*ny — Scale 24x15 four-bladed prop Retract System — Qu a d ra 's latest Schnuerle ported engine A Suggested Retail Value $169.94 — SYi" spinner M Mail Order Price ...... $ 135.95 J m plut 52 65 stepping

^ Æ ’# ► FOR IMMEDIATE DELIVERY, YOUR m ^^jJkDEALER OR ORDER DIRECT' C Credit card customers >rder by phone: (71 2) 364 31 65. Master Charge and VISA welcome. No C.O.D.s! » BYRON ORIGINÁL^-P 0. Box 279, Ida Grove, la. 51445 (712) 364-3165, Telex: 439012 the look and feel of fabric in the MonoKote tradition Top Flite’s new iron-on FabriKote™ is superior • Great for solid wood and open frame to any other fabric covering! This material is structures · Available in Red, Orange, applied at regular MonoKote™ temperatures. Antique, Yellow, White, Dark Blue FabriKote goes on easier, has terrific shrink, FabriKote does not sag and gives an excellent finish. The Size Regular Lite torsional strength obtained from the non- 4 8 ” X 3 ’ $ 1 0 . 5 0 $ 8 . 7 5 directional weave is far superior to any fabric 4 8 " X 1 2 ’ $ 4 2 . 0 0 $ 3 5 . 0 0 covering available today. In the tradition of MonoKote . . . Top Hite's FabriKote has “gotcha covered." • Lighter than Coverite · Unique, non- Magnified photo showing FabriKote’s woven fibres. directional shrinking properties add 25% more torsional and bending strength · Requires no TOP FLITE doping · Applies at low heat · Solvent Top Flite Models, Inc. resistant · Fuel, moisture and fade proof 1901 N. Narragansett Ave. • Paintable · Ideal for sport and scale aircraft Chicago, Illinois 60639

For a free sample of MonoKote™ and FabriKote™ plus our latest catalog and prop chart, send request with 50 cents to Top Flite. GET INTO THE AIR FAST WITH A KWIK-BILT KIT! Sig's Time-Saving. Patented "Kwik-Bilt" System Pioneered A Revolutionary Method Of Fuselage Construction. The Internal Balsa Profile Carries The Load Of The Engine And The Flight Surfaces. Protecting The Molded Plastic Fuselage Shell From Vibration And Fatigue. The Ready-Formed Shell Goes On Effortlessly In A Few Minutes To Produce A Smoothly Finished Component. Complete With Panel Lines And Integral Wing And Tail Fillets. Tail Surfaces Are Sheet Balsa And The Foam Wing Core Is Covered With Balsa Planking. Making These Easy-To-Assemble Structures.The Superb Control Response Of These Competition Proven Designs Deliver Picture Perfect Maneuvers. KIT FEATURES OF CHIPMUNK & MUSTANG KIT KBRC-2 SIG Quality Balsa and Plywood Formed Plastic Fuselage Halves MUSTANG P-51 Pre Cut Foam Wing Core Rugged Plastic Cowling Designed By MIKE STOTT $74.95 Clear Canopy With Framing Formed Plastic Wing Tips Solid Balsa Internal Profile Sheet Balsa Tail Surfaces Pre-Bent Torsion-Bar Landing Gear Decorative Decal Sheet Step By-Step Instructions HARDWARE PACK INCLUDES ENGINES: 60 Molded Control Hinges WINGSPAN: 64ln. Molded Nylon Control Horns WING AREA: 700 Sq. In. Tuf-Steel RC Links WEIGHT: 7 Lbs. Double Coated Servo Mounting Tape

SUPER CHIPMUNK

KIT KBRC-1 ENGINES: .61 WING SPAN 64- WING AREA 690 Sq.ln $76.95 WEIGHT 7 Lbs

^ S I G

CESSNA 150 Designed By HANK

KIT FEATURES Decorative Decal Sheet Molded Plastic Skin for Aileron Step-By-Step Instruction Booklet And Flaps With Realistic Crimping Die-Cut Plywood Parts Cessna Factory 3-View Drawing Sig Quality Balsa Formed Plastic Fuselage Halves Molded Nylon Control Horns Door And Window Detailing Molded Plastic Hinges Molded Plastic Engine Cowling Tuf-Steel RC Links And Rods Molded Wheel Pants Double Coated Servo Tape Pre-Cut Foam Wing Core Aluminum Engine Mounts Formed Plastic Wing Tips Nylon Nose Gear Bearing ENGINES: 50 to 60 KIT KBRC-4 Solid Balsa Internal Fuselage Profile And Steering Arm WING SPAN 65 In. Sheet Balsa Tail Surfaces Nylon Wing Bolts WING AREA 645 Sq In Formed Aluminum Mam Gear Blind Nuts And Bolts WEIGHT 7'/? Lbs $89.95 Strong Coil-Spring Nose Gear Assorted Small Hardware

CESSNA 172 SKYHAWK Designed By HANK POHLMANN :sigs? KIT FEATURES Decorative Decal Sheet KIT KBRC-5 Cessna Factory 3-View Drawing Step-By-Step Instruction Book Formed Plastic Fuselage Halves Die-Cut Plywood Parts Realistic Cessna Crimping For Sig Quality Balsa Ailerons. Flaps. And Elevators Molded Nylon Control Horns Formed Clear Windows Molded Plastic Hinges Molded Plastic Engine Cowling Tuf-Steel RC Links and Rods Molded Wheel Pants Double Coated Servo Mounting Tape Pre Cut Foam Wing Core Aluminum Motor Mounts Solid Balsa Internal Fuselage Profile Nylon Nose Gear Bearing And Steering Arm Sheet Balsa Tail Surfaces Nylon Wing Screws ENGINE SIZE 60 CU IN Formed Aluminum Main Gear Blind Nuts And Bolts WING SPAN 65 IN $89.95 Strong Coil-Spring Nose Gear Assorted Small Hardware WING AREA 645 SQ IN WEIGHT APPROX 7-1/2 8 LBS

SEE YOUR DEALER FIRST! TO ORDER DIRECT. ADD $1.00 POSTAGE FOR ORDERS UNDER $10.00. POSTAGE FREE OVER $10.00. NO C O D. ORDERS. SEND $2.00 FOR THE LATEST CATALOG OF KITS, ACCESSORIES AND SUPPLIES BY SIG AND OTHER MAJOR COMPANIES. SIG MANUFACTURING CO., IN C .. . Montezuma, Iowa 50171

APRIL 1981 5 The Naccarato team wins again! Tony and his mom, Addie Mae, entered two models in the 1981 IMS Trade Show indoor R/C electric scale competition, and took first place with this "G uppy", a lightweight homebuilt designed by the Sorrell brothers. The model flew over the heads of ex­ hibitors and spectators during the show. More about it beginning on page 11. Oh yes, the check is for S200, just enough to buy one tank of gasoline! Bill Northrop'* workbench

• Talk about a cliffhanger! We’ve been counted, John ended up with a narrow "R/C Model Builder magazine has holding this column way past our nor­ margin of victory, only 340 . . . 10,436 to been the only hobby industry voice to mal deadline in order to publish the 10,096. But, a narrow margin is as good as come out in support of Witt, doing so results of the runoff election between a mile, so congratulations to John Grigg, with passion, and since it is the only Earl Witt and John Grigg for president of new president of AMA. And certainly, direct head-to-head competitor of our AMA. In accordance with the schedule, congratulations to Earl Witt for giving it own Model Aviation publication, we the ballots were to be computer- one hell of a shot. His presidency has wonder what they have in mind?” counted on January 27 (yesterday). Earl been controversial, but this election has That for you. M odel Airplane News, called us in the late afternoon and told proven beyond a doubt that 50 percent R/C Modeler, and all the rest! And a us the computer count came out so of the (voting) membership believed he special thanks to the very factual Com ­ close, they would have to hand-count was right. mittee to Elect John Grigg President of the rejects (ballots that had probably We got quite a charge out of the John AMA! been marked incorrectly so the com­ Grigg campaign letter that was circu­ GONE SOMEWHERE... puter could not register them). That lated to promote him during the runoff We don’t have an "Electric Power” would take until today (January 28). election. As this letter is emphatically column this month, but could hardly This is being written moments after claimed to be complete factual, we can blame Mitch Poling. Mitch was in the Earl’s call to say that the results were take encouragement here at R/CMB. Los Angeles area before Christmas, and complete . . . and he just missed being The third paragraph of the letter read as while there, accumulated data forseveral reelected. O ut of a total of 20,532 ballots follows: columns, along with photos of electric flying at Mile Square Park in Orange County, and at other sites in the area. Returning home to Seattle, Mitch boarded a Pan Am plane at LAX (Los Angeles International) for a non-stop flight. Seated in the plane, he happened to see his travel bag, a custom-made unit of unusual color combinations, being loaded in the baggage compartment. Upon arrival at Sea-Tac A irp o rt (Seattle- Tacoma), Pan Am was unable to come up with his bag, and could not explain how it was able to disappear on a non­ stop flight. Of course, you’ve guessed it, all of the electric colum n material was packed in the errant bag. To date, it has not been found. SIG AWARDS The following brief story by Frank Huffman, Fort W orth, Texas, is self- explanatory. The 8th Annual December Dinner Meeting of the Fort Worth Planesmen club will live long in the memories of the 78 attending members and guests. . . One of our very active AM A Senior age group members, Mike Clem, of Dallas, Haiel Sigafoose presents the GLEN SIGAFOOSE JUNIOR/SENIOR ACHIEVEMENT AWARD to Mike Clem. The perpetual trophy w ill be on continuous display at AMA headquarters. Continued on page 100 6 R/C MODEL BUILDER OVER THE COUNTER

A ll material published in "Over the Counter" is quoted or paraphrased trom 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 of that product, no' any assur­ ance as to its safety or performance by R/CMB.

• Peck-Polymers has added three new items to its ever-growing list of quality model products. First, the Peanut Scale model that everyone uses as a compari­ son when saying that a particular model “ flies as good as.. the Lacey M-10. This version was designed by top British modeler Butch Hadland, and is the one with which he won the English Peanut Monocoupe 110 Clip-Wing, 2-inch scale, built from Vern Clements detailed plans. Scale Championships. It's a consistent contest winner with its abundant 47 square inch wing area and long rubber motor capacity. The Peck kit is complete except for glue and paint, includes decals, three-views, and step-by-step photo-instructions. Price is $4.95. Now you can extend the life of the blades in your favorite modeling knife. Peck-Polymer's "Sharpy” is a two-sided blade sharpener. One side is coarse enough to put a new edge on a damaged or badly dulled blade, while the other side will fine-hone the blade into a precision cutting instrument. As dis­ tributor and dealer for the Uber Skiver model knife, we at R/CMB grudgingly praise the merits of "Sharpy!” Price is $1.95 each. Finally, Peck-Polymers offers a new, lightweight, 5 to 1 ratio winder for Peanut Scale and other small rubber- powered models. It has a rugged nylon case, and features an anti-reverse lock to now available in 4-ounce tube pairs. from Steve Muck’s R/C Boat Products.

Peck-Polymers 5 to 1 rubber winder for Peanuts and other small Two-sided model knife blade sharpener from Peck-Polymers. rubber models. APRIL 1981 7 The one-inch scale Culver Cadet, as built from Vern Clements' plans. Peck-Polymers presents the perfect Peanut, the Lacey M-10, as de­ signed by Butch Hadland. prevent winding in the wrong direction. In the event you lean toward pusher IM RX ANTENNA RETAINER models, or like to allow a little back- wind when you’re transferring the rubber to the prop-hook, the reverse lock is easily removed or replaced by opening the gear case. The price is $3.95, and like all Peck-Polymers’ items, may be purchased at your dealer, o r ordered direct from the company, at Box 2498, La Mesa, CA 92041. ★ ★ ★ Hobbypoxy Quick Fix Formula 4 Epoxy Glue, favored for many years by modelers because it does not become brittle with age, a typical problem with most so-called “ 5-minute” epoxies, is now available in new, larger, see-thru, Two new accessory items from I.M. Products, imported by Circus Hobbies. 4-ounce poly tubes. Marketed by Hob­ bypoxy Products, a division of Pettit eliminates back pressure. will shrink tightly over open structures, Paint Company, Rockaway, New jersey, ★ ★ ★ and at 350°F, reaches maximum shrink each set contains a full 8 fluid ounces of Coverite announces an improved capability. Its new adhesive is also glue, with a net weight of 9.7 ounces, version of its Super Coverite covering claimed to stick better to balsa and and retails for $8.95. material, to be identified as “ Second hardwood, and once down, doesn't ★ ★ ★ Generation Super Coverite.” Available come loose. Promising high rpm,cool running,and in 47x38-inch and 47 inch by 15 foot rolls, Coverite is also introducing a new long engine life with its use. Bavarian the SGSC comes in red, white, blue, lightweight primer, called Primex, espe­ Precision Products Co., Box 6, New yellow, orange, hi-viz, and authentic cially formulated for Coverite covering Canaan, CT 06840, announces a new car “ antique tan,” which simulates old-time materials, but also well-suited for nylon, m uffler and adaptor for its H.B. 21 PDP natural finished, fabric covering. dacron, silk, tissue, and wood. Purpose race car engine. The muffler attaches to The second generation material is of this transparent blue liquid is to the adaptor without the use of any kind claimed to have a new Hi-Lo tempera­ provide a base w ith excellent adhesion of hardware, permitting it to be placed ture range w hich allows the m odeler "to for final paint finishes. in any position. An internal "O ” ring fine-tune the amount of shrink, de­ Primex is the fourth liquid product actually holds the muffler tightly in pending on the surface to be covered.” position, allowing easy installation. For solid surfaces, including foam, a Large size of the m uffler can assures 250°F setting, producing minimum adequate cooling of exhaust gases and shrink, is said to do the job. At 300°F, it

"Coyote". 72-inch span aerobatic R/C sailplane by Bob Martin's R/C Models. Molded pilots from I.M. Products, by way of Circus Hobbies, in medium and targe sizes.

8 R/C MODEL BUILDER Swampscot Dory from The Laughing Whale, in one-inch scale. New car muffler for the HB .21 PDP engine, from Bavarian Precision Products Co. from Coverite, which includes Balsarite, for 20-40 and for 40-60-90. The larger rigging, first quality twisted rigging cord, a surface primer for iron-on materials, rudder is 3/4 inches longer for twin sail cloth, rolled blue prints, and com­ Glaskote, a high-gloss final coat that engine or 90-size hulls. Order direct, or plete instructions, with photos. Price is does not leave brush marks, and Quik- send 50 cents fo r catalog, at 6003 Daven $39.50, at your hobby shop, or order Stik, an iron-on adhesive that can be Oaks Dr., Dallas, TX 75248, or phone direct, including $2.50 postage and applied to many fabrics and tissues, (214) 931-6597. handling, from Laughing Whale Studio, converting them to iron-on materials. ★ ★ ★ Box 191, Wiscasset, ME 04578, phone All liquids and thinners come in 1/2- The latest scale boat kit from the (207) 882-7154. pint cans, and Balsarite is also available Laughing Whale is a 1"=1 foot model of a ★ ★ ★ in pints. See your dealer or contact Swampscot Dory. Full scale Swampscot Quite possibly the best scale drawings Coverite, 420 Babylon Rd., Horsham, PA Dories were the most highly developed ever created for the particular subjects 19044. variant of dory ever built, particularly in selected have been produced by long­ ★ ★ ★ reference to speed, ease of handling, time scale modeler/competitor Vern Competition quality, precision ma­ and seaworthiness. New England Dories Clements, P.O. Box 608, Caldwell, ID chined rudders are now available from came into being when it was possible to 83605. For the most recent w ell-know n Steve Muck’s R/C Boat Products. Each acquire clear, wide pine boards cheaply. evidence of his work, refer to the many rudder is machined from bar stock Having only four strakes per side, this photos and descriptions in the model aluminum and incorporates a water saved labor costs and permitted rapid magazines of Granger W illiam s’ Gee Bee pickup in the rear of the blade. The construction. These same qualities car­ R-1 and " Z ” Precision and Sport Scale rudder mounting pivot is designed for ried over into the model. R/C models, which have been making leading or trailing rudder angle. A 2-56 As with all Laughing Whale kits, the their mark in regional and national safety shear bolt is used so the rudder Dory uses quality materials, and is built contests. can breakaway if you should hit some­ from pre-cut basswood frames, bottom, The challenge to the modeler in thing submerged in the water while and planks. Kit also includes brass building from Clements' plans is to try to running. The rudders come in two sizes: fittings, wood blocks, stainless steel wire Continued on page 99

U-control handle from Sturdi-Built Model Mfg- Graduated balancing weights and neoprene wheels from I.M. Products, by way of Circus Hobbies.

APRIL 1981 9 FULL SIZE PLANS AVAILABLE - SEE PAGE 100

This plan, from the famous Megow 50-inch series, was sent to us by Paul Brown. Marion, Indiana. 10 Sorta makes one wish the Jumbo Rubber Scale rules still called for the more exciting 48-inch mini­ R/C MODEL BUILDER mum span for monoplanes. Anyone out there, who might have some of the others from this series? "W aitin' at the gate" for the show to open on Saturday morning at The Meyers brothers "Spruce Goose" was a stellar attraction in the the Pasadena Center Exhibition Hall. static display, especially as it could boast of successful flight. WORLD f r r c t + + Text and photos by Larry Renger and John Elliot PASADENA • Oh boy! Show time! I really enjoy the model shows that come to Southern California. It sure beats traveling to cold and sometimes snowy Toledo, or to the WRAMS show in W hite Plains, New York, to see “ what’s new” in the hobby industry. Here at the IMS show, we can also see some very unique R/C flying, indoors, that is. .. More on this later. The 4th annual International Modeler Show, held in Pasadena, California, as it has been for the past two years, gives the manufacturers a chance to talk and listen to the West Coast R /C e r,a n d thaw out at the same time. . . Several booths sported portable TV sets, tuned to the football playoffs. That's one way to keep a captive audience in front of your booth! Over 7,000 attended the show despite competition from two playoff games, a major auto expo, and an RV show. The Tony Naccarato checks controls prior to giving signal for his mother. Addie Mae. to launch one manufacturers must certainly feel the of their two indoor R/C scate electric entries, a Farman Moustique.

Ray Forbes and Danny Lutz are happy w ith the reception given by Dean Copeland, w ith Byron Originals' prototype straight-drive, 60- modelers to the new line of Kraft radio systems. powered Bonanza, complete w ith scale corrugations. APRIL 1981 11 Tom and Donna Runge enjoyed their first Always smiling Duke Fox, holding the twin, John Brodbeck and Bobby Tom answered lots participation in the IMS Show. also had several new mills to show. of questions from the K&B booth. importance of this ‘‘early bird show,” as and durability of the big birds. program of building and flying experi­ there was over a 20% increase in new Tom and Marie Williams, of Craft-Air, ences. Additionally, wing kits with semi- exhibitors this year. displayed their line of accessories, sport symmetrical airfoils will be offered to Let's take a tour of the show and see and competition sailplane kits, and were yield more aerobatic performance, that what’s new. Entering the large, well busy answering many questions about are adaptable to the basic Cowboy lighted area, we see the Byron Originals their soon-to-be-released series of designs. An excellent thought. . . booth with its now famous ‘‘biggies.” “ Cowboys.” This new line is designed to One of the pioneers in model heli­ Bruce Godbersen, Dean Copeland, and introduce the newcomer to building copters, John Gorham, of Gorham crew were very busy explaining details through simple construction tech­ Model Products, wasshowing hisquality of the sectioned Pitts and the P-51 (back niques, ending up with a completed line of choppers, including the popular orders have been shipped) and the new model that will enable him to learn to fly .25 powered Cricket. Watch for the direct-drive ,60-powered Beech Bonan­ easily. Simply, a first airplane that is a forthcoming movie, “ All Night Long,” za, complete with molded parts and basic trainer. . . a bit slower, easier to fly, with Gene Hackman, forsorne neat drug material to simulate the corrugated skin and less responsive than most of the store scenes involving the Cricket. John of the control surfaces, as on the real average "basic trainers.” The “ Cowboy 1 had an exact 1/5-scale, SA 315 LAMA, bird. Super impressive. . . Watch for it! A and Cowboy 2” will offer a progressive powered by a 20cc Kawasaki, weighing large crowd was ever-present, viewing in at 22 pounds, ready to go. Listing at the videotape display of the flyability

Bicycle motor by Duke Fox, to be available in bike shops for about $125. Hmmm . . . re­ Bob Peck checks the prototype of his new blim p which w ill be kitted for modelers. Bag is move that side shaft and drive gears . .. puncture resistant vinyl, w ill lift 28 ounces when filled with helium. 12 R/C MODEL BUILDER Two and trike-geared retracts for 1/2 A scale models, by Robart. A real "cutie-pie" from Sig, this Fly Baby is for .10 size engines. Many modelers looking for these. Very light, w ith semi-symmetrical airfoil for aerobatics.

Peck-Polymers Peanuts and Prairie Birds on Clever installation of Rosie's R/C Power Pod Very nice 1/4-scale Stearman by Chuck Fuller display. Mrs. Bob (Sandy) Peck in background. bolted to reinforced Gentle Lady wing spar. on display in CB Assoc, booth. Kawasaki.

$2,200, this w ill be a collector's item, on display. Next door was genial Bill line of imported G-Mark engines, in­ limited production, call John about it. Cannon, with his “ tiniest” of R/C sys­ cluding a new .30 twin with special 2- West Coast R/C had a large display of tems, to amaze one and all. Bill has truly into-1 muffler. the impressive line of HB engines. been a pioneer in the world of thinking Ever smiling and perky “ C harlie,” of Condor Hobbies, importer of hobby small! Would you believe a 1/4-scale, Charlies R/C Goodies, held court next and toy items, displayed some nifty electric powered, 3-channel airplane, door with some very reasonably-priced rubber powered kits, and R/C cars. EMS with all upweight under 24ounces? One systems, mini-servos, accessories, and had its line of electronic items and such aircraft flew in the indoor R/C scale kits. Tatone Products, with John and airborne packages for the ‘aftermarket’ com petition. Bill was also showing his Terri Tatone (that’s tay-toni, as in Spu-

Airways Scale Retract unit for Bert Baker's Zero. Company special- Sid Gates. Royal Electronics, takes a moment to catch his breath izes in air-driven custom sprung retracts. while answering lots of radio system questions. APRIL 1981 13 Royal Electronics 2-channel lightweight airborne system can be Airtronics' line-up of servos should take care of every need. Also matched to your transmitter. note new glass-filled nylon motor mounts. moni) in charge, were busy displaying the IMS, was the well staffed R/CMB take you back to those golden days of their line of motor mounts, mufflers, booth, answering questions and taking yesteryear for sure. Browse through his and other specialty items. subscriptions; passing out copies of catalogs of plans; rubber, F/F, C/L, and Next was the IMS booth, headquarters R/CMB, selling T-shirts and Uber Skiver be prepared to reach for your check­ of the show, displaying the multitude of knives. book as the nostalgia bug bites. . . trophies for the static displays and flight M oving right along folks, here’s DaCa, Hobby Horn was our next visitation with awards. It was also called "Pasadena with its very nice line of ground support old time kits and models on display. Tower” when announcements for the equipment; airplane racks and flight Replica Engines had a variety of original indoor R/C flying began. . . Adjoining boxes, john Pond O ld Time Plans w ill and replica ignition engines going way back when. . . Their 2.4cu. in. Fergusson Condor is a real beauty. Modelers Mansion featured an R/C revival of Jim W alker’s "F ireball” as an ARF. Ah, yes. Sherline Products showed its line of precision machine tools in modelers sizes, Joe “ M a h tin " presiding (Joe still hasn’t lost his New England accent). Sky Sports Unlimited presented a varietyofaeronautica.fromSleekStreaks and wild kites to die-cast aircraft models for display. Dale W illoughby, of Scale Model Research, was busy talking about his packets of high quality color photos of full size aircraft, for scale docu­ m entation. M aking a left 180, to the next row of booths, our first stop was with Bart Furey, of Robart Mfg. Co., another of the new group of exhibitors coming to the California marketplace to display its wares. The fine line of treaded tires are "original equipment” on many winners in scale contests around the country. Scale Flight Models "Zero" to about 1/5 scale, by Bert Baker and Denny Deweese. Features Robart has a nice selection of hinge conventional construction . . . using wood! systems and all kinds of special retract

Watt and Susan Schroder handling the sales of raffle tickets. Major Col. Bob Thacker seems to be conceding a point to John Tatone. but items given away totaled almost S4000 in value. then, the Colonel hardly ever concedes a p o in t. 14 R/C MODEL BUILDER Tony Naccarato lands the Sorrell "Guppy" in the center demo area Mitch Poling, "Electric Power" columnist, entered this classy looking after an official flight over the spectators' heads. Sopwith Tabloid in the IMS Indoor Electric R/C Scale competition.

gear set-ups. Interesting airplane con­ diments. . . Next up was Bob and Sandy Peck, of Peck-Polymers, with a beautiful display of Peanuts under glass (take note, Jimmy). Overhead was a very large Peanut, er. Goodrich, er, Peck Blimp, soon to be kitted; all up weight with 4- channel radio, dropable ballast, and a full load of helium is about plus or minus nothing. ..! Around the corner we find RAM Radio Controlled Models, Ralph War­ ner holding the fort with his many types of lighting systems, electronic speed controllers and warning devices, and boat kits. Interesting items to dress out your model. Next was Dave M cAllister, MACS to you, with his fine line of diversified mufflers and pipes, very extensive. A local club, the Black Sheep Squadron, that specializes in indoor electric flying, was next on our tour. This group gave excellent demos of U/C electric flying, utilizing modified Guil- lows kits and ably assisted by Tony and Addie Naccarato of “ Tony and Addies,” by Larry Jolly and Dave Shadel, with the display.. . a noted hobby emporium located in XL radios and Saggita gliders on display. Midway Models, around the corner, "beautiful downtown Burbank." Their Then came Flight Line shirts, who were had its very nice line of Replica old booth, next on our list, included a producing custom T-shirts while you timers, all scaled down for .020 or display of hard-to-find rubber power wait. electric power. Struck’s "New Ruler” kits and accessories. On display in their Around the corner, facing our indoor with 31-inch wingspan and the Cleve­ booth too, were their two indoor elec­ flying field, we found K&B Mfg. Here, land Playboy Sr. with 38 inches of wing, tric powered R/C scale model entries for Bobby Tom. K&B’s super service man­ and others too, were there to choose the indoor competition. ager, Bill Wisniewski, and the Chief from. The Airtronics booth was ably manned himself, John Brodbeck Sr., were busy Continued on page g i talking engines, fuel, finishing materials, how to go faster, etc. . . . Their portable TV tuned to the playoff games, may have helped draw a few hobby types to their

Tony Avak checks the zero balance of his competion winning R/C blimp. Flew series Modeler's Mansion is kitting this R/C version Fergusson "Condor", 4-cylinder ignition of specified maneuvers, won S200. of the famous American Junior "Fireball". engine displayed in Replica Engines booth. APRIL 1981 15 FUEL JOE KLAUSE P.O. Box 2699 Laguna Hills, CA 92653 • Imprudent as it may be. let's begin this month with a few assumptions, such as you've: 1. Decided to do your own engine maintenance. 2. Assembled the basic tools dis­ cussed last m onth. 3. Vowed you'll succeed despite this author. Just to prove how right you are on that last one. here's a major omission from my column last month. To do even routine maintenance it’s essential to have a few inexpensive parts. The first photo illustrates these. Without going into lengthy explanations, you should never reuse a gasket, shim, or wrist pin clip. So, just pretend that I previously listed them with the necessary tools. Spare screws are also nice to have on hand. Okay, let's disassemble an engine. Off with the prop nut and washer. Next, the prop drive plate. Ugh, it's usually stuck. At this point,alltoooftena modeler may try prying with a screw driver. Some PH O TO 3 have even been known to use vise grip pliers. All of this is guaranteed to PHOTO 2 trative purposes, we’ll consider a one- damage parts, and may or may not piece case and front end. loosen the drive plate. You can avoid prop drive of a K&B .40. It works well In order to take the connecting rod off such frustrations by using the basic with Super Tigre and other engines. In the crank pin, it will be necessary to first technique shown in photos 2 and 3. In any case, once the prop drive plate is remove the sleeve. On slug piston Number 2, a couple of short lengths of adequately supported, it only takes a engines, this can often be accomplished quarter-inch diameter music wire and mild rap with a plastic mallet to free it. by simply placing a copper glow plug scrap lumber make a very effective Next, remove the carburetor, glow gasket on top of the piston and part way holding fixture for a Webra engine prop plug, and then the head and backplate out the exhaust. Rotating the crank­ drive. In Number 3. a bearing pulíer is screws. If the front end detaches, re­ shaft with a wrench and prop nut will adapted to the task of supporting the move those screws also. For further illus­ usually drive the sleeve up and out of the

PHOTO 1 PHOTO 4

16 R/C MODEL BUILDER PHOTO 5 PHOTO 6 case. The soft copper gasket w ill prevent sleeve. If you do you’ll surely ruin it. to remove the crankshaft from the case. damage to the piston and exhaust port as From a safety aspect, always use a On a plain bearing engine, the crank will long as you don't have to use too much protective cloth when heating or hand­ slide out quite easily. On ball bearing pressure. If the sleeve does not slide out ling a heated case. engines some force is usually necessary. easily, yo u ’ll have to heat the case to With the sleeve removed, you’ll be Hold the case in one hand with padding loosen the fit. Do not use this copper able to slip the connecting rod from the for protection ... a pot holder works gasket technique on a ringed piston. If crank pin. Again, one of those home­ great. With your other hand, use a you do, the chances are that you’ll made hook wire tools will help . . . plastic mallet to strike the front of the squash the ring groove .. . even if ever photo 7. There are some exceptions to shaft. A few moderate raps will free the so slightly. If that happens you may as this .. . notably the Webra speed .40and shaft. well throw away the piston because the .91. Even w ith the sleeve removed on The engine is now disassembled to the ring will never again float properly. these engines, the rod will not slide off state of the Super Tigre .40 shown in the As mentioned, heat can be used to the pin. This is because the wrist pin last photograph. Further disassembly, loosen a sleeve. Photo Number 4, shows bosses of the piston prevent the rod such as bearing servicing, etc., will be the heating of the upper portion of a from sliding rearward. On such engines, the subject of individual articles. For case w ith a propane torch. O nly about it is necessary to remove the wrist pin now, carefully clean and inspect each ten seconds of heating is necessary. This through an access hole in the sleeve and every part. Use a magnifying lens w ill cause the case to expand and loosen and case. and a bright light. Now is the time to its grip on the sleeve. Then, tap the top First, remove the cover screw on the decide if any major parts need to be edge of case against a stack of soft rear of the case, and then reach in with replaced or if they only needed a wooden blocks as shown in photo foreceps and pull out the wrist pin thorough cleaning. That’s about all that Number 5. The sleeve will slide out of retainer clip. The hollow of the wrist pin space permits this month. Next time, it’ll the case an eighth-of-an-inch or so. You is threaded, and by using a head screw be complete servicing of ball bearings. can then use one of those home-made twisted into the pin, you can pull it out Hopefully, this has given you some "Z ” -shaped pieces of music wire to pull through the case. With the wrist pin out, confidence to service your own engines. the sleeve completely free of the case the piston will be free of the rod, which After all guys, as you can see from the . . . photo 6. Under no circumstances will now slide off the crank pin. hands in some of the photographs, even should you ever use pliers, etc. to grab a The last procedure for this episode is a lady can do it. .. ·

PHO TO 7 PHO TO 8

APRIL 1981 17 By KAVELI SUNDOUIST . . . This interesting .15-powered sport twin was designed by a Finnish merchant marine radio operator. Dick Sarpolous wrote the article, and supplied Kaveli's plans and photos.

• This model was designed and built with tricycle landing gear, two engine leading and trailing edge planking, and aboard a Finnish cargo ship travelling all nacelles slung under the wing,and asort capstrips. Wing is flat on the top surface, over the world, moving timber, wheat, of scale appearance enhanced by a with the dihedral taper in the bottom. wood pulp, etc. The designer is the Navy-style paint job. Kalevi reports that Center section is constant chord, with ship's radio operator, an ardent R/Cer it is an easy flying model, probably due tapered tips. Ailerons are tip types, not named Kalevi Sundquist, and a friend of to the extra thick, full symmetrical airfoil the usual strips. Fuselage features large mine. I think he has come up w ith a chosen. Engines are as close together as sized triangle stock in the corners and good sport aircraft design here; Model possible, and the vertical tail area is thick sides, perm itting shaping to an Builder thought so too, so here I am generous, so I would guess single­ elliptical cross-section. The engine writing an article about a plane I didn’t engine flying not to be critical. The nacelles are built-up similar to the even build. designer says it performs like a pattern fuselage, with considerable shaping Discussing the design, Kalevi hassized ship with the added enjoyment of that required. Although the nacelles use a twin for two .15 engines; he used the twin-engined sound. He has flown it beam mounts, I believe I would simplify popular OS ,15’s. W ing span is 50 inches, with skiis. and living in Finland, I’m sure things with 1/4-inch plywood firewalls wing area is just over 400 square inches, there is plenty of snow around to suit his and the use of radial mounts. The and the fuselage length is 37 inches . . . ski flying. engines are enclosed in carved balsa seems just right for two .15s. The design Construction is pretty much standard; cowls, but molded fiberglass cowls is conventional; a shoulder wing model wing is built-up, including several spars. would also work well.

Engine cowlings built up and carved from balsa. Could also be mold­ Front half of cockpit is removable to allow access to receiver and ed from fiberglass. steerable nose gear. 18 R/C MODEL BUILDER North Star designer/builder Kalevi Sundquist North Star is ruggedly built, has WW-II m ilitary appearance. Hand-carved, four-bladed props aboard ship. Cockpit area not yet painted. turned by two OS .15 R/C engines.

The wing is built upside-down on a sheet balsa. he uses a cradle to support the model flat work surface; all thickness taper is in The 3/16-inch balsa fuselage sides are upside down for easier starting of the the bottom surface, for dihedral. The built up with 1/32 plywood doublers and two inverted engines, a good idea. ribs are held level with the building 3/4-inch balsa triangle stock. When I hope I have described Kalevi’s model surface by a wood spacer strip under the joined with the bulkheads, and the top as he intended it; the N orth Star looks rear portion of the ribs. After the leading and bottom are added, there is plenty of like a lot of fun to me. so try a twin for a and trailing edge planking is added, the built-up wood stock to be shaped to a change and enjoy it! · wing can be removed from the bench pleasing elliptical cross-section. With and turned over for addition of the top the battery pack located up forward for planking. The ribs are spaced so the balance, there is room under the wing engine nacelles are added between for the rudder and elevator servos. The them in the proper location.Theailerons wing is held in place with the usual are cut from the finished wing, the ribs 1/4-inch dowels and nylon bolts. cut and a leading edge added to the Covering and finishing can. of course, ailerons so they can be hinged in place. be done by the builder’s preferred The throttle and aileron linkage should method. Apparently mufflers weren’t be installed before the center section used on the original model, but the planking is added to the wing. cowlings could be carved out somewhat The engine nacelles can be assembled to provide for them. Interesting four- and rough shaped before they are bladed props are shown in some of the added to the wing; the large removable photos; these were made by Kalevi of hatches provide access to the engine, laminated hard maple, cut and hand- fuel tanks, and throttle linkages. The carved to shape. I know if I had hand- lower wing leading edge planking is carved, four-bladed props like this, I removed inside the nacelles to provide would never fly with them! room for the fuel tanks. The horizontal Photos of Kalevi’s model on the snow stabilizer is 1/16 balsa sheeting over an show the use of three fairly small skiis 1/8-inch balsa framework. The fin and attached in place of the three wheels, Battery is set well aft to counter-balance rudder are simply cut from 1/4-inch which he reports work well. I also notice weight of two engines. Foam rubber strips seal and insulate ra dio com partm ent.

Throttle and aileron servos in center section of wing. Back in cold Finland for some flying. Love that field box! Electric starter especially nice in these conditions.

APRIL 1981 19 Υλ'&ΔΜ

i] I

i> ■' 1 11 1 1?; <

------J,‘ ' ’ ” X r ~ = 1------1------1".1 ______— ------t------ΓΤ------i;------i------______i______j___1______J / a 'a s r J t * Ä--- s/*~ f*./,+ ) — <— !—

ΤΓ ! r r l " k : ■ 'Ί !*.· * u i i S -31 :

^-‘ ··-··■·

R/C MODEL BUILDER

Above: Two of the author's Flying Plank models. Larger version is all foam, while the other is built up and sheeted. Both 2-Channel. Right: An .020 F/F flying saucer. Wing is 1/16 sheet. Needs forward C G and much patience in trimming. THOzmuzz at tmcF

"Strange Fruit " • I’ve said it before: the best-kept secret hybrid flying machine built right on the Now everyone who’s ever dropped a among model airplane designers is that field. It’s a canard (tail-first) configura­ wing accidentally knows that wings almost anything can be made to fly. All tion using the fuselage and motor from don’t fly without stabs. They tumble. So you need is a lot of tall, green grass to an .02 free flight, the wing of an A/1 what makes a creature like the EPB-1 fly? test it over ... Or a padded cell. towline glider, a set of absurdly large Simple. It has what’s called a "reflexed” The magazines hint at this constantly, wheels from a W W -I SPAD RC m odel, airfoil: it looks like a plain old Clark-Y or showing us pictures of flying doghouses used mostly for balance. The canard similar flat-bottomed airfoil, except that and lawnmowers, witches-on-broom- stablizing surface is clearly the wing of a the last th ird of it is curved upwards, like sticks, lifting bodies, radio controlled hand launched glider, complete with a banana. It’s as if the whole wing has a pizzas, etcetra. But you can see the polyhedral. The creature was rubber- sort of permanent, built-in "up aileron.” principle at work even closer to home banded together from parts salvaged This keeps the center of pressure from . .. right on yout own flying field. Look from that morning's crashes .. . and on shifting around as the angle of attack of carefully, if you dare, at the way Joe its first power flight it flew away forever the wing changes . . . and lets it fly Schmozzle builds his Falcon 56. . . wing- on a fat Sacramento Valley thermal! without a stabilizer. tipson backwards, square leadingedges, After such a performance, who’d be Don’t take my word for it. Buy yourself upthrust in the engine. But still it flies. afraid to tackle a simple flying wing? So a 3x36 inch sheet of Sig’s airfoiled balsa, With Harley Hotstik at the controls, of the next project was a semi-scale model cut it in half at the 18 inch point and course . .. Joe himself can’t even control of the EPB-1 "Flying Plank.” Designed in presto, you have not one, but two his own impulses, let alone a model. Still, 1954, the full-scale Plank had a span of 25 "flying planks!” Using a damp sponge, it does fly. feet and a four-foot chord. No sweep- warp the trailing edge up about a 1/4- I have a snapshot, taken years ago, of a back, no dihedral, no tailfeathers. inch all the way across. Snap an ordinary

Half-A Volksplane built entirely of sheet balsa. W ith scale, all-flying "Staggerlee". a 36" bipe built w ith Mark's Models all-sheet wings. tail surfaces it proved to be a handful to control. Reverse stagger gives excellent stall characteristics. 22 R/C MODEL BUILDER spring clothespin to the leading edge in the center of the wing, to serve as nose- weight. Now give the plank a gentle push into the sky, and it should reward you with a long, scalloping glide. If it dives, bend the trailing edge up; if it stalls, add some clay to the clothespin for noseweight. For turn adjustment, slide the clothespin off center. I’ve amused myself for hours at slope sites with these simple planks, usually built with raw materials from the bottom of the field kit. They don’t need rudders unless the air is gusty and unstable; for those near-calm mornings when you're just killing time waiting for the wind to come up, they’re perfect. But back to the R/C version of the plank. The first one was cut from Styro­ foam wall insulation board and sheeted Simple box construction used on the Volksplane. Half-A models like this often take far less time (I almost said planked) with . . . nothing. to build than to Monokote, especially if you get fancy! I still wasn’t convinced that one of these boards would fly well enough to repay a stand out on the flying field. Personally, I an average flig h t, it w ould take at least big investment in time and effort. The wouldn't recommend ’em for thermal two good pilots to get it through a four- "scale” fuselage, a simple pod, was soaring, but if you happen to have access minute engine run and safely back onto strapped underneath with a couple of to a windy slope.. . the ground. rubber bands. This pod carried only the From the flying plank, it’s only a The problem turned out to be a bad battery pack; the receiver and two simple step to that basic, all-purpose aerodynamic mix; nothing big, just a lot servos lay flat in the wing. For control UFO, the flying saucer. The saucer, too, of little gremlins that compounded surfaces, I just hinged the last 1 inch of needs a reflexed airfoil for stability. In one another. At that tim e I was running a the wing all the way across, then made fact, it’s just a sort of stubby-winged small manufacturing operation called two cuts through this flap to divide it (“ low aspect ratio,” if you like tech talk) Southwestern Sailplanes, turning out a roughly into thirds. The outer two-thirds version of the flying plank. And how line of small power planes and gliders I declared to be ailerons, and the inner does it fly? Abominably. A big rudder in based on the "ribless Jedelsky” wing one the elevator. the center helps keep it aimed in the panel described in August 1979 RCMB. Early test glides showed that the right direction, but it still needs small, This 36 inch wing panel is built from two center of gravity needed to be at about rudder-like “ stall fences” out near the pieces of sheet balsa and works beauti­ 22% of the wing chord, much further wingtips to keep it from rocking from fully, not only for gliders, but for power forward than a conventional design. side to side during flight. These stall models such as the Honker, Honker And the first time I pitched it off the cliff, fences apparently help keep the oncom ­ Bipe, and Li’l Gypsy. I planned to add the it flew! Hoorah! It was a bunch too ing breeze aimed more or less down the Volksplane to this series, as the com­ sensitive to elevator control, but at least I airfoil, preventing spanwise flow and a pany's first semi-scale kit. could steer it around through the lift continual series of miniature tip stalls But the undercambered airfoil of the zones and keep it aloft. I managed to put that cause the ship to rock. (For a good Honker wing just wasn’t compatible in about five good minutes of this before look at a full-scale stall fence, take a with the Volksplane's all-flying tail a couple of kids showed up on bicycles, window-seat in the very front of the surfaces. Undercambered airfoils have a and crashed it for me. smoking section of the next 727 you ride, very shifty center-of-pressure; this is . . .W ell, I guess it wasn’t all theirfault. and study the wing leading edge.) what makes the Honker such a hot They watched the plank soar for maybe The next unorthodox design is a airplane to fly when you move the CG twelve seconds, became bored, and 36 inch R/C version of the Evans Volks­ back to about 35%. But with an all-flying said, “ Mister, make it do a loop.” Hero plane. Whaat?! A Volksplane, among stab, especially one made of flat-plate pilot that I am, I put the nose straight talk of flying planks and saucers? Every­ balsa, the Honker w ing gets to be a real down, let the airspeed build, and then one knows that the full-scale VP-1 is a handful to fly, unless you’re willing to honked back on the stick. The rubber real pussycat to fly; stable and forgiving, run the CG at about 20%. And I wasn’t, bands exploded with a snap, the fuse­ just a big, slow, overgrown model air­ nose-heavy airplanes are not only bor- lage pod started off on its own trajec­ plane. Then what went wrong with the Continued on page gg tory, paused just long enough to dis­ 1/2A version shown in the photos? On connect the battery plug, then disap­ peared over the cliff, leaving the wing to tum ble out of the sky like the last leaf of autum n. "W ow, Mister, can you do that again?" (The best medical advice I ever saw is printed right on the label of every pill bottle. It says. “ Keep out of reach of children.” I try, oh Lord, I certainly try.) The second Flying Plank was a built-up structure sheeted with 1/16 balsa, using the same Clark-YH (reflexed) airfoil. The fuselage was built solidly onto the wing this time, the down-elevator throw reduced, and the little ship flew for years. Flying wings will probably never be competitive for speed or L/D events, because a reflex airfoil is so draggy. But Trike gear makes take-offs a cinch, for the Staggerlee. Uses Max .25 and 3 or 4 channels. they’re easy to build, and they’re sure to

APRIL 1981 23 By DICK HAIMSON . . . Part 12: Square Loop with Half Rolls, and the Vertical Roll

• In learning the maneuvers we have a preliminary sequence. heading of the next corner will change. been describing during the past months, Start at about 25 feet altitude and out Another potential problem, is the roll several general model types were built approximately 175 feet, plant yourself rate to be used. The second roll is usually and flown. Among them were the firmly with shoulders parallel to the noticeably slower than the first, due to follow ing: Super Kaos 40, Phoenix 6, flight line and fly straight and level, the two 90° turns and one half-roll that Curare, Das Box Fly 20, Haf-Fast,Quickee through the center until the plane preceeded it. The only way I know of 500, Dirty Birdy, Aeromaster Biplane, reaches a point approximately 30° to the handling this problem is a dual rate Mach 1, plus many of my own designs side of center. Pull up abruptly but switch or a hell of a lot of talent . . We and modifications of some of the afore smoothly and proceed to approximately use the switch. mentioned models. Heavy, light, large, the 60° angle from vertical. Now pro­ If you are flying a design which is small, high drag, swept wing, straight ceed inverted until you are past center at either very light and/or powered by a wing, etc., etc. have been tried and they again 30° to the other side of center. Pull strong engine, the afore-mentioned all would fly all the maneuvers if care­ up elevator again to a vertical dive and problems will be lessened. However, if fully flown. pull to level at the 25 foot altitude you are flying a design which is very Our favorite plane, which is used to (starting height). sleek and heavy, the only salvation will experiment with different maneuvers This exercise should be practiced be an extrem ely large, fast maneuver and flying styles, is a .45 powered, much over and over until the apparent size which may bedifficulttoframecorrectly. modified Gator-Flea. The plane has 550 and time on each leg becomes very The Vertical Roll sq. inch wing area, approx. 30% stabi­ similar. You may have to turn tighter or This maneuver is a piece of cake if the lizer, weighs 4 lbs. plus, and is a fixed- looser, use low and high th ro ttle on each model has all the characteristics of a gear taildragger. Sounds awful, right? leg plus re-position wings slightly after Christen Eagle or Pitts Bipe. You need Not really, its wing loading of under 20 each corner, but don’t even think of the strong vertical performance and oz. per sq. ft. allows turns and tricks not adding the rolls until the size of the positive aileron response to make the possible with our big planes which have square loop is an automatic reaction. sequence look right. a loading of 24 oz. per sq. ft. We have The typical problems you will encounter Continued on page 75 one other ,40-powered practice plane here are the same ones that popped up which has 500 sq. inches, and weighs on the Square 8 (See Feb. '81). The exactly 3 lbs. tendency to pick up excessive speed on The point of all this is that flying the 3rd leg will probably be a source of 175 meters radically different designs can give concern, but the only cures we know of insight on problem solving. So far, I have are; light weight, substantial parasitic (5 7 7 .5 Ί steered clear of recommending pattern drag, dive brakes, a low pitch prop at low designs or kits, but a light-weight, ,40- R.P.M. or perhaps a variable pitch prop, powered design is worth having as a although we have never tried one (but practice model. Here is a set up that w ill!). works nicely: Now that we’ve got the square loop Take any of the Quickee 500 kits under control, let’s try adding the rolls, which are low wing designs and enlarge as required. A new problem may now the stab to approximately 30% of the appear, and it can really be a toughie. If wing area, make a serious effort to keep you fly while holding in a little up or the weight down by using slow-drying down trim, the half-rolls can get a very epoxy and Hot-Stuff for construction. snakey look. Further, if the rolls do not We have built the Haf-Fast design at 22 end with the wings exactly on line, the oz., ready for finishing, without resort­ 100 meters ( 3 3 0 Ί ing to lightening holes or weak wood. NOTE: THIS IS THE VERTICAL FRAME The finished plane, using a standard DESCRIBED ON PAGE 44 PART C OF flight pack (500 MA), can be completed THE 80-81 RULE BOOK. at 3 to 3-1/4 lbs. with a m uffler. Ask your NOTE THE 100m ELEVATION racer friends for help if you have doubts OCCURS 51m OUT. on this. With this set up, you can learn a lot about flying with throttle and prac­ tice complex maneuvers without bash­ ing your expensive birds. The first maneuver to be reviewed this month is the Square Loop with 4 Half- Rolls. Note that the book only gives a very short description in the judges guide. Because there is no time or size limitation, other than the 60° frame requirement, we can fly this one as large or as small as desired for maximum points. The positioning is very impor­ OUTER LIMIT tant this time, because what happens on the first leg dictates the length and time 51 meters 100 meters lor the following 3 legs, if the perfor­ JUDGE (3 3 0 Ί mance is to be perfect. Let’s go through (168.3” )

24 R/C MODEL BUILDER Byron Pitts owned and flown by Jay Stargel at DCRC Bealeton scale contest in September. Pilot leaned over to tie shoelace at moment photo was taken by John Preston . .. sure he did! NASA members voted 4 to 1 for a pilot in cockpit. Good!

follow. Just a few pages later there is an article entitled. "The Wright Brothers W ouldn’t Get Off the Ground in 1980." I’d love to give you the article in its entirety but I do not have the express permission of the author, Clifton E. Meloan. and the editor. The gist of it is. however, that Orville and Wilbur would encounter a pack of pernicious problem s if they tried their little experiment today. Little • Aside from our supply of model pants are active in the sport of hang things like missing chain guards, cata­ magazines, ihe Underwood household gliding, and that, "the FAA is presently lytic converters, noise abatement, etc. receives issues of many kinds of journals, (Fall 1980) planning to issue regulations were a few of the things Meloan sug­ newsletters, stuff and things. There are, concerning hang gliders and the new gested would need to be added to meet of course, several items dealing with powered hang gliders.” The article goes today's regulations. The sheer weight of education because of the household's on to explain that, “the new federal many of these items may well have bent toward that field. One publication regulations will be fairly benign, al­ prevented the Wright plane from ever that finds its way into our home six times though at this point no one outside of becoming airborne. a year is Aviation Space— The Journal of the FAA knows exactly what the wording It is concluded, however, that they Aerospace Education A recent issue and scope of the proposed regulations probably would not have even gotten to contained two articles that tended to will be." People involved in the sport the flight stage because they lacked such foster some musing on my part as I read are awaiting the proposed federal regu­ items as, “ an environmental impact them. The first was entitled “ Hang lations with mixed feelings. Some feel statement on what they would do to the Gliding, Powered Ultralights, and Fed­ that federal regulation is needed so as to Kill Devil Hills and surrounding wild­ eral Regulations." It was w ritten by Les have official recognition, while others life.” Their wing fabric was not fire King, Region IX Director, United States say that once this now self-regulated retardant, the piano wire could not be Hang Gliding Association. It estimated sport is controlled by the government shown to meet uniform stress tests, and that between 30,000 and 60,000 partici­ more stifling regulations are sure to Continued on page 88

Latest mods on Col. Bob Thacker's OMAC-1 (Dec. '80 R/CMB) include 30° tilt-in on winglets and electronic coupling of forward and main wing flaps. These mods have eliminated small dutch roll on takeoff and landing. APRIL 1981 25 WORLD WAR 1 A e ro p la n e s The author, strapped into the cockpit of his Bristol Scout, ready to take off on a flight of imagination . . . which is slowly approaching reality!

By LEONARD OPDYKE . .. The publisher of World War / Aeroplanes points out some of the similarities in problems, and their solutions, between fractional scale modelsand full scale aircraft. Thought provoking.

layers of foam rubber cut and shaped sub-assembly drawings. And at that time from kneeling pads. And it was all I didn’t have enough subassembly draw­ wrong, as you can see from the photos. ings to be able to scale up a properly- The cowl was too deep, the front oval proportioned three-view. So I took • Way back in 1953, I came across too high, the rear fuselage too thick and apart the most obviously wrong parts of William Wylam's detailed structural too heavily curved, the fin and rudder my big model . . . the rear fuselage and drawings of the Bristol F2b Fighter in the wrong shape, the upper wing too fin and rudder . . . and rebuilt them the M odel Airplane News. This had always low, the wheels too high. Crushing best I could from photographs. But the been one of my favorite aeroplanes, and disappointment; I checked and re­ results were not satisfactory at all. since the beautifully-drawn frame in the checked the drawings. . . and then went the troubles ran deeper than that, and I Wylam drawings cried out to be built back and checked the drawings with the finally gave it away, still uncompleted. with every strut and fitting. At the time, I mass of photos I’d collected of the But I learned a lot from all this: was teaching in Shreveport, Louisiana, original machine. No doubt about it, 1. Even famous draftsmen make mis­ very far from home, and it seemed like a Wylam had made a lot of mistakes, and takes. fine idea to get involved in something very serious ones, too. 2. Factory three-views may not be detailed and exacting . . . like a 7 foot I thought that in order to rebuild the much better. R/C model. So I scaled up the plans, parts thai needed it, I should try to get 3. Errors in shape and proportion bought a Super Cyclone engine, got a lot better drawings, and I wrote Bristols, in may not show up clearly till the model is of pine strip at the local lumberyard, and England, for help. They sent me several built and you can see it from some of the began. big drawings of details and pieces, and same perspective views that familiar It took a year to get it to the point of included several three-views. It didn’t photographs were taken. assembly shown in the accompanying take much study to discover that all the 4. It can be possible to get the actual photographs, and back in New England, three-views were different from each dimensions and shapes from original I pinned and wired it together prior to other . . . and these were company drawings ... if they have been pre­ fitting the rigging and turnbuckles. drawings! And it didn’t take much more served, and if there is a way of getting to Except for the dihedral, not yet estab­ to realize that full-scale aeroplanes are them. lished in the pre-rigging photos, the not built from lofted three-views, like 5. You can waste a lot of time over a frame was exactly as Wylam had drawn models, but developed in jigs built from scale model if you don’t begin with it, including the big wheels made from the dimensions shown in the various accurate material . . . that is, if you care

This Bristol F2b Fighter was built exactly as per William Wylam's drawings presented in Μ. A.N. back in 1953, which unfortunately brought out many of the errors in these plans. Factory drawings can sometimes be just as bad! 26 R/C MODEL BUILDER about accurate scale. 6. There are a lot of connections between the building of scale models, whatever size, and full scale aircraft. The next step, incidentally, was to get so excited over the few drawings I got from Bristols of the full scale fighter that I spent a year or so trying to add to the set w ith the idea of building a full scale reproduction .. . this back in the mid- ’50s! I got a lot of drawings... a full set will be available shortly, see below, and then came to the problem of finding an engine. By now we were in Rochester, New York, and at that tim e there was a fine war-surplus outfit there which sold ball-turrets and fighters to small air forces all over the world, probably illegally, along with masses of aircraft parts, pieces, and parachutes. Among Brand new Albatros DVa replica built by Jon and Zona Appleby, with Mercedes engine. Now the parachutes were a couple of gigan­ in San Diego museum. Photo from Antique Aero, Flabob Airport, Riverside, California. tic crates containing brand-new Ranger 440s. developed specially for the experi­ 1958!), and I began cutting fuselage New York; the film. The Magnificent mental Bell XP-77 wooden fighter of the metal fittings for the Scout. I sent for Men and Their Flying Machines, had WW-II period. They were cheap, spruce and ripped it into longerons, burst on an unsuspecting public; Snoopy too ... I forget exactly how cheap . . . built a work table in the garage, but time flew Sunday sorties against the Red and would have served the purpose and circumstances intervened, and I Baron, making the Sopwith Camel fam­ well. But I could see immediately that d id n ’t get back to it again for 20 years. ous again. The Experimental Aircraft working with an engine that big and an But in 1978 I was going to school again Association in Hales Corners, Wiscon­ airframe to go with it would have been and had some extra time and built sin, had grown by leaps and bounds, impossible. So I gave up the Fighter another table bigger than the first, got encouraging people all over the world project and looked around for some­ out the box of fittings, laid out the to build their own airplanes; home- thing else. longerons, and got to work again. The designed, kits, plans, reproductions of Since I’d had such good luck with accompanying photographs show the all periods. Their magazine. Sport Avia­ Bristols, I tried them again for drawings current state of the project; it is almost tion, and their assorted services are of the little WW-I Scout, a tiny LeRhone ready for cover, and I hope to fly it next invaluable to a would-be builder... or rotary-powered delight to fly; Bristols, spring. The engine ran two weeks ago, to anyone interested in building mu­ bless them, came across w ith nearly a full castor oil and all! seum-scale models with original con­ set of drawings of the C and D models. But nothing happens in a vacuum: struction and detail. And the little By this time, I had become involved with what had been going on outside my mimeographed newsletter begun in a friend at the University of Rochester basement in the meantime? Ed Brennan Rochester grew into a full-sized maga­ who wanted to put out a newsletter for had built his reproduction Fokker zine for WW-I aeroplane buffs all over people who were building or restoring D-VII, powered with an inverted Ranger, the world; World War I Aeroplanes W W -I aeroplanes; our first list showed back in 1957 (he is now building 12 carries lists of builders, projects, draw­ 50 such projects anywhere in the world. reproduction aircraft at once!), and ings, materials, engines, and sources of In the course of developing this news­ Frank Tallman was building up his movie all kinds. The current list shows some 700 letter, I came across most of the people air force. Cole Palen was building up his reproductions either finished or under who were working then and have con­ collection and airshow in Rhinebeck, tinued to work on WW-I aircraft. Jack Continued on page 88 Canary (killed during the filim g of “ Tora. Tora, Tora!” ) persuaded me to buy one of his rebuilt 80 hp LeRhone engines, com plete w ith logbook (only $500 in

Throttle control detail in the author's Bristol Now we're getting serious! Author runs up the 80 HP LeRone rotary engine in his Bristol Scout. Scout. Note wicker seat, very light in weight. Nice way to cool off on a warm summer day!

APRIL 1981 27 Insignia on this P-I2E indicates that it had been assigned to the Air Corps Technical School. Cusp in aft end of headrest is noticeable. From the Warren Shipp photo collection. BOEING By PETER WESTBURG

One-only Model 100F, a P-12E purchased by Pratt & Whitney, w ith F4B-4 headrest. Fate of this plane described in Part II. P-12E

Capt. Frank "M onk" Hunter piloted this P-12E out of March Field in 1932 while Lt. Col. Hap Arnold was C.O., commanding pursuit and bombardment squadrons. The identifying cocarde on upper wing was rare. (Nick Karstens photo).

28 R/C MODEL BUILDER APRIL 1981 Vic Drew's "Miss Circus Circus" won the District 8 Sport 40 class Steve Compton's "Squire Shop" has proven very competitive in Dis- with the R/C Glass boat that he builds. trict 8 Sport 40 class competition. Modified Dumas. R/C POWER By JERRY DUNLAP BOATS SPORT 40 BECOMES OFFICIAL THE RULES E. The boat must be attractively CLASS IN N.A.M.B.A. Before getting into greater detail painted in the spirit of unlimited racing. After a few years of being an “ un­ about this class, it might be helpful to Each boat must have a sponsor's name official class," Sport 40 has finally made it present the rules. or logo affixed to the hull. The sponsor into the rulebook of the North Ameri­ SPORT 40 HYDROPLANE CLASS may be of the builder's choice: a hobby can Model Boat Association. This PURPOSE: “ To race hydroplanes shop, gas station, local business, fictious column has carried information about having the same configuration as past or sponsor, etc. Each boat must have the the developm ent of this class, and present 3-point hydroplanes.” driver's NAMBA number on it pre- reviewed a boat suitable for use in the SECTION I: Boat Specifications ceeded by the letter “ U.” The number Sport 40 class. This colum nist has been A. The boat may be purchased ready can be on the hull, fin, or tail. In cases more than just slightly interested in the built, modified from an existing hull, or where the boat is painted like a real progress of this event. For better or scratch built of any suitable material unlimited hydroplane, the number must worse, the Sport 40 guidelines appear­ generally used in model boat construc­ appear somewhere in numbers at least ing in the 1981 N.A.M.B.A. Rulebook tion. 1/4 inch in height. were gathered and edited by the person B. Minimum hull length will be 35 F. Engine compartment covers and responsible for what you are now read­ inches. fake engines are not mandatory. Driver’s ing. The final set of rules submitted and C. The deck, cockpit, tail, or fin cockpit, cowls and tail fin sections are adopted by N.A.M.B.A. proved to bean configuration may be changed to keep mandatory. interesting compromise. boats interesting. G. No outdrive assemblies will be It seemed that everyone was in agree­ D. Outrigger designs are not allowed. allowed. Propeller drive dog must be ment about the hull type and engine displacement limitations. There was, however, decided differences about the type of power source that could or should be allowed. Model boaters from my area, the Pacific Northwest, favored allowing the use of racing engines and tuned pipes. The folks from California were already racing the class using front intake engines and mufflers. It was obvious that neither group was willing to convert to the other’s power source. Rather than throw the baby out with the bath water, the rules were written to provide districts the opportunity to decide for themselves what type of power plant will be allowed in theirown Gary Ginader, Portland, Oregon, used a Dumas U-76 kit for hull, made cowlings and engine to convert boat to Miss Budweiser. Boat was second in Dist. 8 Sport 40 for 1980. district.

Leo Oreith. Dist. 8's new NAMBA director races very scale appearing Bill Brazzle, Tacoma, Washington, modified a Dumas Drag Ν’ Fli hydro. Boat named after the bank Leo works for. 40 into a Sport 40. Boat named after his hobby shop. 30 R/C MODEL BUILDER Norm Nordby. Portland, made his R/C Glass hydro into "Miss Port Three Sport 40's taking the right turn during the District 8 Champ­ land Rose". Note prop guard built onto starting stand. ionship race held at Kent Lagoon in September. under the transom of the boat. No twin rudders or twin props will be allowed. SECTION II: Engine Specifications (A District Decision) A. Division I: .35 lo .45 C.I., front intake, loop scavenged, no tuned pipes. No Schnuerle or Perry ported engines and no rear rotors. Engine must have speed control “ via” carburetor. No modifications of any kind to the car­ buretor. Engine must use stock carbure­ tor that is supplied by manufacturer for the engine. Engine may be updated to current carburetor. Maximum carbure­ to r bore shall be .312". B. Division II: The engine must con­ Dave Blacksten's beautiful "Miss U.S.", from an R/C Glass hydro. Had fastest time in Sport 40 form to NAMBA Class B specifications. event at the 1980 NAMBA Nationals. Tuned pipes are allowed. The purpose and hull classification certain engine modifications. The other SECTION III: General Rules portions of the rules were taken from engine class calls for natural aspired A. Boats w ill be checked for appear­ the District 9 Sport 40 rules. The 35-inch motors and restricts certain engine ance prior to racing. minimum hull length will create a few modifications. In that regard, Sport 40 is B. In Division I, the carburetor will be problems for some District 8 Sport 40 simply following what is being done in physically and dimensionally checked. enthusiasts who converted Dumas the full scale races. Winning boats may be checked at the DragN’ Fly 40 kits into Sport 40 hulls. WHICH WAY TO GO? completion of day’s racing. In infrac­ Seems like when the afore m entioned The question that I have been asked tions are found, the boat will be dis­ kit is pickle-forked it is only 33 inches numerous times in the last few months qualified and next boats moved up. long. But model boaters, being the is, "W hich way do you think is the way to C. There are no restrictions on fuel or creative individuals they are, will devise go?” I’m glad I didn't have to pay the prop used. some creative ways to add two inches phone bills of some of the folks who D. Any boat not passing the technical onto a short hull. The Division I engine have called to discuss this question. inspection will be disqualified and rule follows the directions that District 9 Quite obviously, I’m more than slightly forfeit the entry fee for that race. took in powering boats in this class. The prejudiced about the type of engine that E. A driver of scale-like appearance Division II engine rule is what District 8 should be allowed. Since the district I w ill be used. It must be at least shoulder has been using. Some might think it race in has already decided that they height. unusual and unwarranted to havea class want to be a Division II district, where F. Boats will run on the standard with two engine divisions. For model I’m coming from isn’t too hard to guess. NAMBA course/s. boating, it is something new. However, I will, however, attempt to present a G. Noise limits shall be the standard it should be noted that the American brief rationale for each of the two NAMBA level ... 95 or less dbs when Power Boat Association sanctions two engine classes. Both engine divisions running at full throttle 50 feet from the divisions in the Seven Liter Class. One have been used successfully in different measuring device. engine class allows blown motors and areas of the country. W hich is the better approach to engine type is a matter of personal preference. Actually, group preference would be a better way to state how the feelings are expressed. The areas where the Division I type engine is manditory have some valid reasons for their decision. It is pointed out that front intake engines cost less when initially purchased. These engines tend to last longer and break parts less frequently than the racing type engines. Another reason for using the front intake engine with a muffler is to assure that the speeds obtained by boats in this class w ill not exceed a rate that makes the boats hard to control for beginning Another Dumas Drag N’Fly 40 modified by its owner Tim Woods. Bellevue. Washington. Legal­ ity of owner mods adds spice to the Sport 40 category. Continued on page 72

APRIL 1981 31

- v

Photo No. 2. Trevor Dyer flies this Buccaneer C Special in New Photo No. 1. New Zealand OT activities reporter Ivan Treen, w ith Zealand with a 3-channel radio. his E.D. Diesel powered Shulman Wedgy. It's cool in July!

obtaining (and keeping!) good free flight sites. Photo No. 2 shows Trevor Dyer’s Buccaneer C Special circling overhead. Trev uses a three-channel setup to fly the model. He reports this is a real neat flyer. Everyone ought to build Buccaneers (Bill Effinger, please note!). m e m m Also in R/C Assist, we d o n ’t have a By JOHN POND photo to illustrate our point, but the "Leprechaun” (a British design) built by Bill Shannon, is truly a magnificent sight • The lead item in this month’s column The Nationals are generally held over in the air with its slow stately flight. Bill will feature the old timer activity in New the New Year weekend. Seems strange runs a hobby shop in New Plymouth, Zealand. Thanks to Ivan Treen, 20 Konini to us northern hemisphere cousins, as and manages to import modeling St., Levin, New Zealand, we have an we are generally hip deep in snow at that goodies from the good old USA. This update on Anzac doings (last colum n on time. certainly is a relief to those modelers in New Zealand was better than three years Treen goes on to say the Nationals are New Zealand starved for the latest items ago!). the one bright spot of old timer model­ (and also the available old timer stuff!). Treen, who is the lead man in old ing, as entries continue to increase every Treen reports the New Zealand Na­ timer activity in New Zealand, reports year. Interest is always quite high, but it tionals will be held (already staged) on that old timer activity in local contests is is a chore to get the fellows out to fly. the east coast of the N orth Island (re­ not booming as well as he had hoped One outstanding exception to this member your geography, New Zealand for. He points up the entries at the June problem is John Dowling, a real keen is comprised of two major islands) at contest at Fielding were low, and again, modeler, who drove over 600 miles to at the Scale Rally in Levin (what the heck attend the old timer events, both na­ does he expect at a Scale meet?), only a tionally, and locally. Man, that’s real scattering showed up. dedication! Photo No. 1 shows Ivan Treen with Radio assist Old Timers is also starting one of his numerous old timers, a to catch on, as New Zealand, like the rest Shulman "Wedgy," that seems to fly in of the modeling countries, has problems any weather. This photo was taken in July (that is the height of their winter).

Photo No. 4. Thracy Petrides blows up Trexler, Photo No. 5. The Brown Bull trophy, created Photo No. 1 Gareth Newton's Comet Sail­ Bruce Lester holds, at '36 Nats. Entered Stout and donated by Clarence Bull, of SAM 8. plane at Hastings, New Zealand. Neat cowl! International against rubber ships! Could be highly prized perpetual. APRIL 1981 33 Bungay developed over 40% more power between 18,000 and 19,000 rpm than any other engine in its class. This was backed up with a money-back guarantee! Ed Ingram, in an article in Model Airplane News describing the Bungay motor, stated he observed an aluminum 8-inch dia., 6-inch pitch propeller being driven at 19,400 rpm . Tests w ith flywheel showed results of 28,000 rpm. Best part of all was that the fuel em ployed was a straight menthanol-castor mixture. One often wonders what performance would have been obtained using heavily ni­ trated fuels. The Bungay engine was different from the regular run of high speed motors such as the Hornet, McCoy, etc., which Photo sent in by Frank Huffman showing old timers still "talking a good flight" at Glen Sig- employed rear rotor induction disks. afoose Memorial Awards Dinner (see "W orkbench". (L to R): Fiske Hanley. Jack Russell, The Bungay, on the other hand, em­ Gordon Bourland, and Joe Percy recalling the late '30's. ployed the old reliable rotary shaft Hastings. Called the "Fruit Bowl of New Those interested in towline might take induction with an updraft carburetor. To Zealand," the weather is usually quite heart. If SAM 7 decides to run the 1982 eliminate the end play so prevalent in good in this area. Of course, dates were SAM Champs, there will no doubt be this type crankshaft induction, the December 27 to January 2. Treen has towline glider and also hand launched Bungay people provided a steel disk cast promised to send a suitable write-up on glider events. How about that? in the end of the aluminum alloy crank­ this meet sometime later. ENGINE OF THE M O NTH case. At the Nationals (as at the American Every so often, an excellent product The size of the updraft venturi dia­ Nats), there w ill be (was) the annual will come out only to fail because of the meter was one that led to considerable General Meeting of the NZMAA which bad timing of the market demand. Such experimentation. Like all tests of those will also include special interest groups. was the case of the Bungay "600," this days, the diam eter was determ ined by As one of the groups, the Vintage Group month’s engine of the month. "cut and try” methods. The Bungay will probably have one rule change The Bungay 600, produced by the Brothers found that too small a venturi suggesting the cutoff date be flexible; Bungay Brothers, located at 323 East 30th opening severely restricted engine per­ i.e., the cutoff date for old timers would St., New York City, NY, was based on formance, while a large opening made always be 25 years prior to that Nationals. extensive research pointed at develop­ for hard starting and critical needle valve (Not a bad idea, but who keeps track of ing the best racing engine for high settings. Of course, in those days, pres­ what is eligible?) output. Advertisement appearing in the surization of the tanks was not con­ Treen says he sees little point in last four months of 1948 in M odel sidered (or even used!). This would have extending the present deadline of 1950 Airplane News made the claim the eliminated the problem of fuel draw as there are simply more than enough designs to pick from. Matter of fact, I 3/»~------· there is something for all interests in different types. Treen, as Chairman of the Vintage Sub-Committee, says he will Uungay 60 0 be listening for reasonable arguments DRAWN BY ALLEN POND and justification for extending the present date. Ivan sez, as a Nursing Supervisor, he has to respect the beliefs of his staff and patients, so the above situation will be nothing new! Among the photos submitted by Ivan, the shot of Gareth Newton’s Comet Sailplane in Photo No. 3 shows how a cowl should be made. O f particular note is the engine installation and the correct line of thrust. Too many times, this columnist has seen Sailplanes sporting engines in a high-thrust configuration. This force setup is actually an advan­ tage, as the line-of-thrust is generally above the e g. and the C.L.A. Stricter enforcement on line-of-thrust locations in old timers should be more carefully watched by Contest Directors. In closing off, Treen notes that a new R/C Assist O /T event, Vintage gliders, is starting to catch on. This is something that has not been tried in the United States. Actually, free flight tow line glider events were staged at the first few SAM Champs. However, the attendance steadily fell off to the point there were more trophies available than contes­ l·------■J tants! This is a quick way for any organi­ zation to go broke. 34 R/C MODEL BUILDER Ptioto No. 7. This L.S. Wigdor designed "Wasp" built by Alex Imrie Photo No. 9. Kurt Sandberg, Sweden, with replica of his 1949 Swed­ from April 1938 Aeromodeller plans. Frog I.75 cc power. ish A/2 champion. Appeared in ‘51-'52 Zaic Yearbook. (Linden pic) with a large venturi opening. One notable fact that many modelers overlook in running their old time motors is the use of 4-1/2 volts rather than the prescribed three-volt input. Many old timers have found the added voltage makes engines much easier to start, run better at high speeds, dwell time on the points can be increased and point clearance setting reduced to as little as .004 inch. Now that’s close! The compression ratio is another favorite topic of modelers who like to “ hop-up” their motors. Increasing the compression will, in some cases, in­ crease performance. Again, there is a diminishing return of gain as compres­ sion is increased. So it was w ith the Bungay people as they went as high as 18 to 1 in compression ratio, only to find Photo No. 6. C.D. Buckle discusses the radio end of rules w ith Malcolm Taylor. Models are double-size Abzug S-4, Super Scorpion, and Buccaneer Standard. they had to settle on an optim um ratio of 9.80 for general all purpose racing. The arrival of the Bungay engine on in a field of already plentiful, well For the technically minded, the Bun­ the market, when it was finally released recognized, red hot engines. gay m otor featured a bore of .940 and a after much experimentation, coincided Only a few Bungay engines were stroke of .875 inches, giving a displace­ with the arrival of the new Dooling .61 actually sold and unfortunately, the top ment o f .607 cu. in. Piston rings and engine. names in racing did not use this new cylinder liner were steel fitted with The Dooling Brothers were no new­ engine. As usual, in the modeling circle, aluminum piston and drop forged 14ST comers to the speed circles, so a decided if a certain engine or kit does well, there aluminum connecting rod. The cylinder advantage went to their product. Then, is an implied guarantee that you, the head and crankcase werecast aluminum too, most all the hot engines were being purchaser, will have the same luck and alloy using a claimed special casting produced on the West Coast: Hornet, possibly win. So it was with the Bungay method to eliminate pin holes and McCoy, Hassad, Cave, Atw ood, to men­ engine. With no national records to rough finish. W eight of the engine was tion a few. The only other engines, the claim, no big contest wins, and no out­ 16-1/2 ounces without coil, condenser, Howler and Ball, were being produced standing big name in speed utilizing the and battery (practically the same weight in the Midwest. Here was a newcom er in engine, it was a foregone conclusion as all hot 60 engines of that period). the East Coast, struggling for recognition that the engine simply could not suc-

Photo No. 8. Monty Tyrrell’s three-year-old Bellanca CH-200 model­ Photo No. 10 Lidgard Hi-Ho built by Bill Baker, Norman, Oklahoma. ed after Boardman-Polando "Cape Cod", never fails to place. Did well with it at the SAM Champs. (Baker photo)

APRIL 1981 35 Photo No. 11. California Chief w ith ED 2.46 diesel, by Gordon Cod­ Photo No. 13. Struck's Cabruler (MB A pril '761 by Clarence Bull of ding, Kingman, Arizona. How 'bout that Keil Kraft rubber prop! Oregon. Used McCoy 19 at SLC SAM Champs.

Photo No. I2. Turner Special built by Manny Gomez, S.A.F.F.S. Photo No. I4. Pete Samuelson, SAM 21, is hooked on Foote's Club, Reno, Nevada. Mighty skinny fuselage back there! Westerner. He's had his problems, but they're excellent fliers. ceed no matter how good it was. A n­ certainly did shake the troops up as the those days). The only motors on the other well made engine joined the ranks rubber boys had visions of another market sold for $21.50 (Brown Jr.) or of model oblivion. repeat of M axw ell Bassett’s trium phs in higher. This was a tremendous obstacle LESTER PHOTO the 1933 rubber events. Wouldn’t that to overcome as this represented better Again, this issue we feature another have been something! than a week's pay. 1936 photo taken by Bruce Lester, of 30 YEARS AGO, I WAS. . . Pete then noticed the GHQ people Toronto, Canada, when he used to Any old tim er who is w orth his salt were putting out their version of the attend all the early Nationals w ith his knows that Pete Dillon won the Payload Loutrel engine. O f course, $12.50 per trusty Brownie camera. Event in 1937, the only tim e it was even motor seemed like an attractive price, This month's shot (Photo No. 4) shows held at the Nationals. Using a modified but the kit price of $8.50 was even better. Bruce Lester holding the "C lo u d Kisser,” Modelcraft Corben Ace, he was suc­ After all, didn’t the advertisement read, as it was originally called, built by Thracy cessful in lifting a whole telephone size "Gee, it goes together like a piece of Petrides who is inflating a flat Trexler 1-1/2 dry battery off the ground. This cake." Upon receipt of the motor and wheel. This model, featured in Model was later published in Air Trailsa sone of after assembling, came the rude Airplane News, August 1938 issue en­ the featured Championship models. awakening: The motor simply would not titled the "Flying Midget,” was built to However, for the story we are using, run. Pete sez, "I must have broken the compete in the Stout International we are indebted to Karl Spielmaker, the damn thing in just by flipping theengine Event. spark plug of the new SAM Chapter #4. trying to get it to fire . .. just once!” Through an error of omission, gas "Krazy karl” saysthat Dillon was a super "Well, this motor kit business is no power was not prohibited in this event, nice guy who ran a hobby shop in good, I w ill add another $4.00, return feeling that most modelers would not Jackson, M ichigan. Pete has since retired this engine, and get an assembled one,” consider building a gas model down to and has moved to Florida (who doesn’t reasoned Pete. Well, the new one ran 300 sq. inches of wing area w ith the gas these day?). but the GHQ vibrated so badly parts motors available then (mostly all .60 As Pete tells the story, he was manag­ kept com ing off. Pete actually had to use size). Imagine the judge’s surprise ing a corner gas station in Jackson in two screwdrivers to keep the by-pass when Thracy showed up with this gas 1936, pumping gas and doing minor and the carburetor from falling off. version for the Stout Event. autc repairs. About this time, Pete These GHQ motor are junk, concluded The model was fast, alright, w ith a became interested in building and flying Pete. "I want my m oney back,” to which Brown Jr. This columnist built one and model airplanes. Gas m odeling was only the GHQ answered, "no refunds," but when it crashed, it burnt like a real three years old and Pete wanted to try offered rubber kits instead of cash. Pete airplane (metal gas tank split). Petrides his hand at one. said, “ I can always build and fly rubber had the same problem with this model, In the thirties, the heart of the depres­ models; send ’em !” as it would blow a tire every time it came sion, jobs were scrace and the pay very When GHQ started sending kits to his in for a hot landing. low. Pete was earning $18.00 a week for a Continued on page 76 Although the model failed to win. it 48 hour week (no time-and-a-half in 36 R/C MODEL BUILDER British “Pou" OLD TIMER Model of the Month researched. about a Ken Hamilton who had ap­ Designed by: Ken Hamilton Over the course of four decades, we peared at a Flightmasters’ scale meet at Redrawn by: Al Patterson would occasionally dig into our old Mile Square. We asked someone if this Text by: Bill Northrop magazines and revisit the many- could possibly be the "Flying Flea" thumbed, dog-eared, and yellowing H am ilton, and were assured that it was. • For no less than 44 years, we have had collection of familiar pages. And with­ However, we didn’t get around to a continuing fondness for one particu­ out fail, we would stop and study with following up the lead. But finally, the lar, little rubber-powered scale model. It care and admiration, the drawings and long letter came about a "Jimmie Allen" was love at first sight when we p u r­ photos of the Flying Flea by Ken H am il­ contest, which we published in chased the O ctober 1936 issue of Flying ton. Several times, the most recent being " , . .Three if by A ir” last m onth, and we Aces magazine (15 cents) and turned to about 12 years ago, we almost began made our contact with the person the construction article by Ken Hamil­ construction of a Flea, but it never quite belonging to the name that we had ton, com plete with five pages of full-size happened. That last attempt was in the known for 44 years! And not only that, plans, for the “ Pou du Ciel,” Flying Flea form of a 2-1/2-times-up model for R/C the Flea is still alive and well and looking (the not-so-glamorous literal translation (wouldn’t you know). The inherent just as good as its photos (which we have being “ Sky Louse” ). Even by today’s design problem, which you will read reproduced herein from prints recently standards, Ken’s drawings, and the about further on, did have somewhat of made from the original negatives!). model built from them, were extremely a dampening effect on our enthusiasm. From here on, the italicized copy is accurate, well detailed, and thoroughly Then, a couple of years ago, we heard new material about the Flea, sent to us by Ken Hamilton, and if we had the time, we’d build the Abbott-Baynes version, but with the newer double-covex airfoil, and moving the top wing up and for­ ward. .. Brainchild of Frenchman M. Henri Mignet, the "Pou du Ciel” first flew in late 7933. The simple, low cost, single sealer was of unconventional tandem wing design relying upon generous dihedral and a low CG for lateral stability, there being no ailerons. The single control column surface control (no foot controls) pivoted fore and aft for pitch control, sideways for directional control. The foreward wing was pivoted at its front spar attachment, and rearward movement of the control column pulled "And now for the 'inside story' . . said Flying Aces in its original caption for this photo in down on cables attached to the rear spar the October 1936 issue. We can hardly argue the point. to increase the angle of incidence. APRIL 1981 37 FULL SIZE PLANS AVAILABLE - SEE PAGE 100

Moving the stick forward allowed the ignition, in which form it developed a accidents in which a pattern emerged, wing to float upward and decrease the maximum of 30 bhp. tests were initiated in France and Britain incidence angle. Side-to-side movement Following minor damage in a crash in late 7936 The Flying Flea was found to of the stick turned the rudder, resulting landing, the Appleby Pou was rede­ be unsafe, and Britain grounded them in banked turns signed to semi-enclose the engine, (the French action is not known by me). Widespread interest t/uickly devel­ lower the radiator into the fuselage Although safe in the usual slow and level oped among would-be private or sport nose, and to increase the forward wing­ flight, a Flying Flea allowed to build up fliers, and the first Pou built in Britain span. Perform ance was substantially speed in a nose down attitude, would flew in mid-1935, being built by a S. V. improved due to the lowered drag and uncontrollably dive into the ground. Appleby. His machine utilized a more improved aerodynamics, and this ver­ Although H. Mignet successfully powerful Ford 70 water-cooled engine. sion was placed in production byAbbott- redesigned the airplane to eliminate the The aircraft version of this four-cylinder Baynes Aircraft of Farnham, Surrey, problem, the Flying Flea movement auto engine was developed by Sir John selling complete and flight tested in the never regained momentum. H. Mignet's Carden, who fitted it with a thrust late 7935 for £798! redesigned Pou incorporated an entire­ bearing at the propeller shaft end. an Scores of Fleas were built, in Britain, ly new airfoil in both wings in which the aluminum cylinder head, and dual not all of them flyable. After several fatal formerly undercambered wings had

Above 3/4-rear photo was not used in the F.A. article. Model still exists and is in excellent condition. Ken Hamilton brought it to our office and we actually held it! 38 R/C MODEL BUILDER These 3-views, reproduced from the September 1963 issue of Aeromodeler, are available from Model and Allied Publications Ltd., P.O. Box 35, Bridge Street, Hemel Hempstead, Herts HP1 1 EE England.

convex lower surfaces, the cables (o the forward wing rear spar were replaced by push-pull rods, and an elevator was provided in the rear wing trailing edge. In addition, the forward wing was moved up and forward to increase the gap and stagger. The Abbott-Baynes British Pou was selected as the prototype for the rubber powered model, as the semi-enclosed Ford engine and fuselage nose shape lent itself to an enclosed rubber motor. In flying the original 22-inch span model, the tucking tendency of the prototype was never encountered. Larger gas powered models of this prototype have flown in stable manner. One, however, following a whipstall, remained in the dive in prototypical manner, all the way down! As I reexamine my references today, and study my drawing again, it still stands up to scrutiny. I would make only the following changes if I were to redo the drawing today. I list them for your reference, and you may wish to incor­ porate one or more of them in your drawing. A. The rudder ribs should be tilted upwards at rear, to he at right angles to the rudder spar, which is correct as shown in its forward till. All lettering on the rudder should retain its relation to the ribs, thus becoming tilted too. In addition, move the words "The British" and "PO U " up one rib bay each. This is per information I used at the time; the Abbott-Baynes catalog. I cannot explain why I made the drawing differently! We made this change as the drawing was being prepared by Al Patterson.

Continued on page 85

Short, stubby, ugly, and cute. All of these adjectives fit the Flea, it’s just a matter of how you feel at the moment. If we built one, we'd stay with this particular model, but use the double-convex airfoil that cured the one bad habit.

APRIL 1981 39 • When faced with the monthly task of writing a column, one quite often finds oneself "not in the mood" to do any writing; this mood, or lack of it, usually coming on slowly but persistently as the deadline closes in. By the time the deadline arrives, the situation can some­ times get really bad; a guy almost has to chain himself to the typer. But this month is different. Oh, sure, the dead­ line is upon me, in fact has already gone by a couple days, but the urge to pound keys has also arrived. Too bad these fingers can’t seem to operate the way they are supposed to. I w ork as a sales rep fo r Northwestern Hobby & Toy and we just switched over From MRP and in 1 /12-scale, the "Frisbee" Can-Am car. Who says they all look alike? Love to an ordering system that involves that road clearance! heavy dependence upon a computer and assorted hardware. Orders, instead of being hand-written, are now punched-in on a mysterious black box, and over the last few days these digits have become more accustomed to a R/C AUTO NEWS ten-key board than what is now in front of me. * By DAN RUTHERFORD TIME TO JOIN ROAR It wasn’t too long ago thai I was quite concerned about ROAR and where it was going. Actually, I was just con­ cerned, I figured I knew where it was going; downhill and away, much to the harm of future R/C car racing. During this tim e, it was very d ifficu lt to think of any reasons for a racer to join ROAR (Radio Operated Auto Racing) and while things were looking bad, there still seemed to be hope. Now, thanks very much to the un­ believable amount of effort put in by Joe Werner, ROAR Vice-President, the organization is in super shape. Well, not in super shape yet, actions of the past administration still have to be worked around and a lot of work remains. But the future of ROAR seems well assured, so much so that every R/C car racer not only should be a member but in many Also from Murp . . .er . . .MRP, the Busch-Hogan Can-Am 1/12 car. cases w ill have to be a mem ber to enter local as well as Regional and National Builder. As long as a comparison is being reasonable enough to me and with the races. drawn between MB and ROAR news­ really good safety record of R/C cars, Insurance is the big reason to join for letter, "Rev-Up” ·, this column can only even the beasty 1/8 Gas cars, we should many, and previously ROAR did not deal with certain topics, limited as it is not have any trouble with the insurer, have any insurance at all to offer mem­ by needing to be somewhat universal in nor they with us. (If larger AM A can live bers, instead, sending them off to WAM appeal and the usual lead time required. with it, so certainly can ROAR, wen) for coverage. This was not bad, of However, in Rev-Up there are no such ROAR membership costs are quite course, but it did seem (to me, at least) to constraints to worry about, and so you reasonable, most of you need only send be an odd situation, having the national can find in it information that you will in $15.00. Those under the age of 16 get a sanctioning body for R/C car racing not never, ever run across in this column. break in price, dow n to $10.00, and a offering insurance. Anyway, Joe saw that In the past, there have been some family membership can be had for only ROAR needed an insurance package serious problems with the Rev-Up; I $20.00, a real bargain fo rth e many racing and lined up the St. Paul Insurance must be honest about it, this last year I families out there. Along with the Company, represented by the Daseke think only two or three issues were money, the usual name, address, etc. Insurance Agency, to provide members published. But lovely Kitten Hess says information is needed. Send the whole with $1,000,000.00 liability coverage. that Bill Romine has agreed to take on mess o ff to : ROAR, Inc., 12008 W elland, Seems so simple, took just a few lines to the editing job of the Rev-Up, and not Cum berland, Indiana 46229. To make say that the jo b is finished, but Joe only is he willing to do it, he also has things a bit easier at the ROAR end, worked his tail off putting the insurance extensive experience in advertising and mark the envelope as containing a package together. publication work. membership application. Another big thing that an organiza­ Another situation to be aware of, and AND IF YOU HAVE A QUESTION... tion such as ROAR can offer is a news­ this is a change from previous practice ROAR depends upon v o lu n te e r letter. N othing like hearing what the rest for many clubs, is that ROAR affiliated workers. There are no paid employees of the country is doing, announcements clubs will be requiring all racers entered of ROAR, so with the membership of big races often appear, and it’s always in club races to be ROAR members. This money and stuff, please do not include a fun perusing the ads from the manufac­ is an absolute must, as the insurance letter that requires an answer. Instead, turers, many of which are too small to policy states that for all to be covered, all check out the following list of ROAR advertise in a magazine such as Model must also be ROAR members. Sounds Regional Directors, figure out which 40 R/C MODEL BUILDER Lots of numbers, in three different styles, are available from Bo Link. For the off-road folk, BoLink has this decal sheet, which is actually mylar. Also available in white. one is closest to you, and direct your or heard of kits for the event. straight, were neat, but the Funnies were question to them ... Since then, Marvin has at times by the far the best . . . especially when Region 1, Richard Hunter, 92-32 worked with MRP on various projects lianas was called to the line. 222nd Street, Queens Village, NY 11428. and rush jobs, while Bob works full-time Before the Nationals, Don McKay and Region 2, Ray Hepner, 7081 W illow as the head guy at Murp, an operation others had told me about the racers that Wood Street, Orlando, FL 32802. that has grown with the sport and now were to show up, but most comments Region 3, Rick Davis, 20715 Moross, employs quite a few people. That Murp seemed to be about this man lianas, and D etroit, M l 48224. has done so well is due in very large part the picture painted was of a racer who Region 4, Kitten Hess, 22434 Elsnore, to Bob, who has stuck it out through knew only one way to run; to-the-wall, Katy, TX 77450. thick and thin, and it is good to see Bob WFO, pedal-to-the-medal, and so on. Region 5, Larry Flatt, 10205 Outlook and the company he started still around Somebody to watch. Drive, Overland Park, KS 66204. and doing well. Here's to another good So when Jianas lined up his 1/8 Funny Region 6, Chuck August, Carmel Fire 10 years... for a practice run, I was there, up on the Dept., 6th and Carlos, Carmel, CA 93921. DRAGS... timing tower for a superior view. When Region 7, Dan Rutherford. 4705 237th Mentioning drag cars a minute ago the Greek punched that sucker off the PI. S.E., Bothell, W A 98011. rem inded me of of the first (and last) line, it went out about 30 feet, got real Region 8, D ionicio Pascual, |r., 94-241 tim e I saw 1/8 Drag cars com peting, loose, squirted this way and that, finally M ahapili Street, M ililani Town, HI 96789. which was made much more memor­ jumped the center barricade that di­ HAPPY BIRTHDAY... able as it was also the first (but not the vided the lanes, hit in this other lane, Stopped by Murp (otherwise known last) tim e I saw Bill Jianas in action as a again to swish and sway, almost clipping as MRP, and sometimes even referred to driver. the car in this lane, and then once again as Model Racing Products) the other Now you have to understand that at jumped the center barricade, coming to day, just long enough to gulp down a this point in time, summer of 1977,1 had rest upside down. What was really few bites of its 10th anniversary cake. no real interest in R/C cars, other than terrific about all of this was that from the Yes, it’s been ten years since Bob Welch having an MRP 1/12 Class B (TD .049 time the car left the line until turning and Marvin Lew first formed MRP, then powered) car, as well as a Jerobee turtle, Bill had the throttle squeezed to run out of Bob’s basement. I wasn’t in (JoMac) 1/12 electric car to play with. So wide open. There wasn’t a cnance in a R/C cars at the time, thank goodness; when the '77 ROAR Nationals came to hundred that he could get the car there were some really horrible radios, Seattle, I went to see almost all of the gathered back up, pointed straight and engines and chassis in use at the tim e, but racing, even entered a couple of events, then finishing the run, but Bill was as I recall, Bob and Marvin first made but what I was there for was the smoke, willing to take that chance, to hell with some trick aluminum wheels, examples noise and crashes. I happen to be one the body, chassis and engine . .. And of which can still be seen on some cars of those people who likes the atmos­ this was only a practice run! entered in Concourse Competition at phere of competition just about as You bet I was back at my vantage point National events, and these wheels are much as the com petition itself, so was when Bill lined up for one of the final regarded as somewhat of a collector’s there soaking it all in .. . and 1/8 Drags; elimination heats. Car came off the line item now. Soon followed a kit for a 1/8 both Funny Cars and the Rail class, OK, just a little crooked was all, veering Gas dragster; just goes to show how provided all the SM&C one could stand. slightly to the left of his lane. Still, it was things have changed, most have never On second thought, the Rail cars, w hile going in a straight line. Now off to the heard of 1/8 drags, let alone seen them really fast and generally running fairly Continued on page 7Q

Trick stuff for electric motors. On left, replacement brushes. On Latest McCoy pipe for 11B cars features angled stinger. Set up to right, endbell with adjustable tension brushes. From BoLink. exhaust out top, but this is hard on pit men. Can be turned.

APRIL 1981 41 Breath-taking shot of Ken Merritt's Minimoa circling under billowing cumulus clouds in England. Note true scale structure. All linkages, horns, turnbuckles, etc., have been reproduced. Photos from England supplied by Keith Thomas. Rc SOARING by Dr. LARRY FOGEL

• Some pictures speak for themselves. base. You're looking at Leo O ’Reilly holding And there’s further information from his new one-third scale SB-9. The balsa Keith: Cliff Charlesworth has designed covered foam wings span 7-1/3 meters, an absolutely true quarter-scale ASK-13 Rich Briggs'. Long Beach, modified his Pilot and it weighs 7.5 kilograms. Evidently for balsa/spruce/ply construction. It is "Tom m y" with V-stab and ailerons. two-year-old Yolanda Murray is intent very stable and realistic in flight. It's on learning to fly this bird. For informa­ sensitive to the controls. If you’d like to scale Kirby Kite and Fauvette, which tion about this sailplane, write to L. try your hand at building this ship, the took top static honors at the 1980 Crook O'Reilly Distributors, 42 Maple Ave., plans are available for £6 (and £1.25 for Peak Contest; and Ken M e rritt’s M in i­ Keswick, S.A. 5035, Australia. surface mail, £4.55 for airmail). Write to moa and DFS-230, a German W orld War Keith Thomas of Frome, England, Cliff at 2A Central Ave., Ashingdon, II troop carrying glider. For the record, creates elegant trophies. The one shown Neas Rockford, Essex, England. A here is what the winning pilots look like. is for the winner of the White Sheet molded canopy is also available, but the From left to right: Ken Merritt, who Radio Flying Club Annual Aerobatic price is not yet fixed. placed third: Keith Thomas, first; and Contest. The clear resin encloses a glider Other scale ships seen on the British Mike Trew, second. Congratulations all performing a perfect four-point roll. slopes include Dave Harrison's quarter- around! The resin cylinder rests on a rosewood scale Jantar I (with built-up wings and a Back in the States, I'm happy to report cradle affixed to the black nameplate/ fiberglass fuselage). Mike Trew’s 1/5- that Jonathan Livingston Seagull remains

Winners at 1980 Crook Peak contest. England: (L to R| Ken Merritt Trophy made by Keith Thomas, Frome, England. Described in text. 3rd. Keith Thomas 1st, and Mike Trew 2nd. Congrats to all!

42 R/C MODEL BUILDER Stuff this in your Volkswagen! Leo O'Reilly, Australia, holds world's largest production kit glider; a 1 /3-scale SB-9, span 7.33 meters, weight 7.5 Kg„ Epoxy-glass fuselage, wings of foam, epoxy, and balsa.

Yolanda Murray, age 2, checks out the cock­ pit space in Leo O'Reilly's giant SB-9 .

regardless of the flight, a smooth, con­ trolled, accurate landing is a reward in itself. Not too long ago, I was averaging Dave Harrison holds his Jantar 1 for the static judges to scrutinize. Note top and bottom spoil­ about one landing in ten in the circle. ers, and re tract. W hatta fly in g site! Not surprising, since nobody can con­ alive and well. Recently Mark Smith now fully aerobatic. Wing rotation is trol where a sailplane stops as it cart­ (who designed and flew this model for ±3.5° around the main wing joiner wire. wheels through the landing circle! So, the film of the same name) took Jona­ More recently, he has been experiment­ how did I improve? Like everyone; by than out of mothballs. It’s a handful in ing with the Katie III (a wing wagging watching, listening, trying, and adapting. flight. Each elevon is controlled sepa­ Katie II). Let’s wish them many enjoyable The " secrets" are few, and relatively rately (right stick to right elevon. left flights! simple. Keep them in m ind come spring, stick to left). You can use one to turn on I want to share some items from and you will notice the improvement. the drag. Think through a few maneu­ recent club newsletters. John Dalman The most important lesson is to fly the vers with this control set-up. By the way, provides good advice on learning how airplane decisively. Not only does deci­ the transparent tip plates toe-in 2° to to land, in the Marcs Sparks, the news­ sive flying help landings, but it will help provide drag and thus stability. Three letter of the Madison Area Radio Con­ all your flying, sailplane or powered. servos operate this “ bird” that weighs trolled Society (Wisconsin). Lesson two is to find a comfortable about 30 ounces and spans 60 inches. It’s One indicator of a good sailplane pilot standard approach, either right or left. I a joy to see it fly. is his landings. Most pilots w ill agree that use a straightforward rectangular ap- Rich Briggs, of Long Beach, California, gave the Pilot kit named "Tommy” a new twist. He replaced the conventional tail w ith a 45° V-tail that operates as an elevator. This dressed-up version is aerobatic at the slope, weighing in at only 20 ounces. Sometimes a little “ mod” makes a big difference. Squire Openshaw. )r., of Hayward. California, has been exploring the wing wagger concept. Here the wings rotate to provide roll, eliminating the need for ailerons. Squire believes that Bob Bou­ cher of Astro Flight deserves credit for the term, “ wing-wagger.” He and Dave Rader incorporated this concept into their Monterey, and claimed that it is

APRIL 1981 43 Cliff Charlesworth 1:4 scale ASK 13 wheels overhead, displaying Cliff and his ASK 13. Model is very light for its abundance of area, its characteristic swept-forward wing plan. flies very slowly. Plans available. See text. proach, much like full size aircraft fly. with downwind, crosswind, and upwind (final) lefts.

A

A

„ P ilo t c u * Í Area Dave Harrison's quarter-scale Jantar 1 has built-up wings, a commercial glass fuselage. Except­ ionally smooth in flight, as are most of the huge gliders. The only changes ever needed will be to change distance "A " to suit your The third and final step in a proper you decide you are too low, keep the aircraft, and to adjust "B " to correct for landing is altitude adjustment and flying nose down, your flying speed up, and wind velocity. If a calm day, downwind to the spot. When your sailplane com- concentrate on maintaining your head- and upwind legs can be long, because it pletes its upwind turn, judge its altitude ing directly to the spot. If you are too will be easy to gel back upwind to the and distance to the spot. Practice taking high, you have two options. You can circle On windy days, keep distance “ B" a quick look at the spot and back to your S-turn fo lose altitude, or by careful short, so the sailplane won't have much plane. For accuracy you need a sharp m anipulation o f your elevator, lose ground to cover getting back to the spot. mental picture of your plane and the altitude. For me, distance "A " is usually about 50 landing spot. This will help you decide With the S-turn method, simply make to TOO yards, although I change that whether you are too high or low, and if broad, gentle S-turns, keeping the nose depending on trees, spectators, etc you are heading directly for the spot If Continued on page 64

Mark Smith recently dusted off his model of Jonathan Livingston Seagull, which he designed, built, and flew for the movie of the same name. Not an easy 'bird' to fly. it is nevertheless very realistic in the air. 44 R/C MODEL BUILDER FREE FLIGHT SCALE CONTROL LINE . . . cgE U iiG H r H A N N A N ’ S H A N G A R PEANUT B D -8 ...... „ and FR EE F L I G H T ...... SIERRA CUP. 1980 .. INDOOR ...... MM/TROL LINĚ Be-60 BESTIOLA 3-VIEW

Bill Hartill launches his FAI Power ship in the late afternoon Champagne Flyoff held during APRIL 1981 the Sierra Cup competition. A full run-down of this affair begins on page 57, reported by Reid 45 Simpson. Rex Oldridge appears to be attempting to clear the fuel system in his Albatros. No further caption information available.

FREE FLIGHT SCALE By FERNANDO RAMOS

• This January of 1981 is the beginning attention it deserves. However, I know construction article on a particular of my lOih year doing this “ F/F Scale” what w ill help speed this along. Please subject, usually one that is either very column for R/CMB magazine. It's hard include a stamped, self-addressed en­ obscure or one that has absolutely no to believe that this much time has velope, and I’ll guarantee a quick re­ chance of flying well? There’s no ques­ passed! My duration is almost as long as sponse. tion that we scale modelers have some R/CMB’s existence. I hope throughout One question that is frequently asked rather peculiar tastes! Well, the follow­ those years, that this colum n has proved is, "W here can I get a set of drawings for ing will be for those of you who say you informative and useful, and will con­ such and such, one featured in this can’t draw. Believe me, I’m one of them. tinue to do so. column?” Most scale modelers, I in­ I marvel at people such as Walt Mooney, At this time, I would like to thank the cluded, make only enough of a drawing who can come up with a plan about as many of you who have taken the time to to build a model from, and often on fast as you can sign your name to a write kind words regarding this effort, nothing more than good οΓ butcher check. The only drafting I’ve ever had and an apology to those of you to whom paper! So, unless a modeler shows was in ju n io r high school, and that was I owe letters. This is the one area that I desire to pass along his plans, I don't 100 years ago. hope to improve in this coming year. It want to bother him. There are many different ways to seems with my workload being the way Another question is really in the form make enlargements, and I will cover a it is, letter writing seldom gets the of a request. That is, why d o n ’t I do a few o f these different ways. W ithout question, the easiest way is to take your three-view to a blueprint outfit which does this type of work (check the Yellow Pages). They can enlarge it to whatever size you want. The drawback is cost. It isn’t cheap! For an average size model, you’re looking at between $25 to $45. That, my friends, would buy enough to build several F/F scale models. If I had my choice this would be it. I was told recently that Xerox now has a copier that can enlarge to about any size you would like. Again, the cost is up there. The next approach is probably the oldest method of all, and is still being used by many scale modelers. That is, the use of dividers and a scale ruler. Jack McCracken uses this method, and you know how beautiful his models are! For those of you who may not be familiar with this method. I'd like to outline it for you. Take a three-view that you are interested in enlarging, (the sketches should help) and draw a datum Judges Tricia Dennis and Tony Creedy examine Jack Jansen's Blackburn Monoplane at Odiham. line the entire length of the fuselage.

46 R/C MODEL BUILDER This should run right through the thrust line. Most good three-views have this drawn already. Next, mark on this datum line everywhere you want to put a bulkhead by simply making a dot. I would also locate on this datum where the w ing spar or spars should be. You can determine this in several ways. If it is a cabin type airplane, the wing struts will be attached to the spars. If it’s a parasol, you have the cabanes and wing struts to help locate spars, and on a biplane, you have cabanes and interplane struts. On low-wing designs, use the landing gear location. Wherever you placed a dot, draw a vertical line through it, which is perpendicular to the datum line. Take the plan view and do the same with it. Draw a center line going from the front to the rear of the fuselage. Next draw a perpendicular line at the wing and stabspar location on this center line. These last two lines should run the span of the wing and stab. Since most three- views are drawn with the side and top views in line with each other, the vertical lines previously drawn on the side view can be extended right through the fuselage top view (see sketch). All we are doing is making a series of reference lines. Let’s say for example, that you want to build a model three times the size of the three-view. On a separate sheet of paper (large enough to draw the plan on) draw a datum line, and at the beginning of this line draw a line per­ pendicular to it. This will be the first reference point. Measure from the three-view the distance from this same point to the first vertical line. Take this dimension and multiply it by three and transfer it to the datum line. Continue this for the rest of the points. Then draw perpendicular lines through each of those points. I hope you are still with me. This whole procedure takes but a few minutes. (Proportional dividera, which can be set for the ratio you are enlarging, save lots of time spent multiplying dimensions, wen) Now measure on the three-view the distance from the datum line up to the outline of the fuselage, and from the datum line down to the lower outline of the fuselage. Again, multiply these dimensions by three and transfer onto the drawing. Repeat the procedure. This whole thing is similar to plotting an airfoil. Just connect thedotsusingeither a ship’s curve or a French curve, and now you have an enlarged drawing of the fuselage. The same technique is done for the plan view. Cross-sections can be done by draw­ ing squares say, 1/8 or 1/4 inch (depend­ ing on size of three-view), over the different cross-sections. Then, on your working drawing, make the size of the squares (our example) threetimes larger. Transfer accordingly. You can do the same for wing tips, rudder outline, etc. Putting in structure shouldn’t be too much o f a hassle. Some designs lend themselves better to a box-like struc- Continued on page 71

APRIL 1981 47 Overview of John Gladfetter's model, quite simple, good for a Dirty Close-up view of Gladfelter's creation. Note trick wheel and bellcrank. Trainer.

By "DIRTY DAN" RUTHERFORD ontrol line PHOTOS BY CHARLIE JOHNSON

FREEBIE PLUGS A N D SU C H .. . Actually, I don’t mind getting sucked the N15D, H enry’s beautiful Team Race Like all folks writing for modeling in a bit, makes life a touch more fun, and engine, but I ask you, how many Team publications, I quite often am the reci- certainly adds to ones list of stories to Race fliers are there anyway? Do you ient of carefully worded little messages tell. But I do m ind it when I get so carried know one? In all my C/L flying I have aving to do with the introduction of a away as to pass the information along via met only a handful,all of theseat various new product. Unbeknownst to those this column, information that might just AMA Nationals. Except for Tom Knoppi, sending out the letters and packets of cost you some money. None of us lost a local flier, who is so nutso over TR that information, their efforts are not always any money on Alsa, of course, in fact I we worry a lot about him ... met with the same enthusiasm at this don’t think I have ever inadvertently Speaking of Team Race, that is the end as was obviously charging the air unched up a product that turned out to event that Henry Nelson attackedseveral during the w riting of said messages. Ce a dud. But then many of the promo­ years ago, his idea being to make com­ You see, if you do this kind of thing, a tional announcements I get never make mercially available an engine that would bit of free-lance writing for yuks, giggles, it to the pages of this column. .. be competitive, at World Champs level and Mad Money, it isn't long before you And as you may have already figured competition. Now, I am not a flier of get burned on a new product or service. out, here comes an announcement (the Team Race, never w ill be, either, but I do Remember Alsa? It was supposed to be a drum roll, please) of a new engine, the follow it as closely as possible, and if a man-made substitute for balsa and I Nelson Competition 15, a glow engine person were to pick an event from all really believed that guy who said he further classified as the N15G. Neither of those available in modeling competi­ could make a material superior to balsa these titles will be in much common use, tion, an event where you could design and sell it cheap. I believed him, and so let’s just call it the Nelson 15, which is and produce a killer engine to make a some of you probably believed me and how it w ill be known at the vast m ajority name fo r your company. Team Race the others who wrote about what was to of flying fields in this country. Yes, that w ould be the very last event to choose. be another revolutionary product. will, in some circles, confuse things with The top-notch TR fliers are absolutely

Jordan Segal dodges a king sire handle at the 1980 Nats. He survived Pete Athans watches while Tom Zon and Terry Kerger untie the the attack. lines. 48 R/C MODEL BUILDER cubic inches, bore and stroke being square at .575. Compressible and volatile materials go in the front door and out the back, so it is front intake, rear exhaust. Crank is a huge 12 millimeter piece, same size as used in the K&B 21, for instance. Sleeve and piston is of the proven ABC construction. Schnuerle porting, of course, although Joe tells me that the boost port is quite a bit wider than usual. The rod is bronze bushed, the motor weighs about six ounces, and is available with a number of head configurations to suit various applica­ tions, as well as being offered in an R/C version, again with different heads in addition to several different carbure­ tors. Carb version will cost a bit more at $169.95. For full ordering information, as well Variable height elevator horn, an R/C aileron as a brochure describing more fully the The new Fox case; taller venturi stack . .. fitting. Epoxy foot to elevator. Nelson 15, contact Joe Klause at Kustom use no bo lts . . .e p o xy in place. Kraftsmanship, P.O. Box 2699, Laguna wacko in their devotion to the event, Hills, CA 92653. No money required, just CLCB. Only one of eleven, some guy many will, and have gone so far as to include a stamped, self-addressed en­ from the Northwest area, voted for the design and build their own engines (!) velope, and if you don’t want the con­ proposal, so there is no sympathy at all just to cut a few seconds off their race tents folded a bunch of times, make from either the CLCB for the Racing times. And you thought you were a that envelope a large one. Advisory Committee where a change in devoted com petition flier. Ever build AN EVENT FOR THE NELSON 15 engine size is concerned. And as one of your own engine? Ever design and If the performance of the Nelson 15 is the big things prompting the proposal in construct several, pronounce them to up to the claims made for it, and I see no the first place was lack of readily avail­ be failures and go right back to the reason to doubt these claims, the engine able motors and parts (same reason for drawing board, all the while keeping up w ill see plenty o f use in FAI Power (Free- the R/C proposals, wen); if Nelson can with other advancements being made in Flight event, dummy) and FAI C/L keep up with the demand there will be models, line groupers, props, flying Speed. M ight even see the R/C guys little reason for the proposal to reappear. tactics and so on? (How many racing turn to it for their Pylon event known as Next event to consider is FAI Combat. category rules allow you to build your Two-Bits racing, more officially referred I mean, wouldn’t it be one of the great own engine? Maybe that's why there's to as Quarter Midget, assuming Henry thrills of a lifetime to be in a match "only a handful" of followers, wen) can soon crank out enough units to where your first model punches in and Being aware of what the TR guys will meet AMA requirements. (Especially as fills the crankcase with mud, worms and do to stay on top, I was very surprised, the R/C Contest Board has just thrown such, and then the second model gets back a few years, when it was heard that out tw o proposals to allow Q M to use cut loose to fly away? Over $300.00 in Nelson was really going to market his 3.5cc [.21 cu. in.] engines . . . even powerplants, one jammed with crud and own engine in the form of a diesel .15 before knowing about the Nelson .15. some duck trying to flip it over just to see and that the idea was not to just supply wen) But in the U.S. of A., when talking if it really is loaded with muck and goo the masses (actually, "masses” is not the about 15’s and C/L, the name of the w hile you watch the other m otor, bolted correct term when referring to TR fliers) event is Goodyear. And it is certain that solidly to the front of the most stable with a managable and reasonably fast Goodyear racing will mean .15 size flying F/F model known to man and fed diesel, he wanted to give everybody engines for some time to come as the by a bladder that is good for five minutes from world class fliers on down an proposal to allow .21's went down to a minimum, streak off to places unknown engine that was better then anything sound defeat in the initial vote from the Continued on page 82 else available, whether it was built from bar-stock or not. And he did it, the Nelson 15D is the motor in Team Race today. It is fast, reliable, and, most importantly of all, it is available. Only a twist of fate, prodded along by an indecisive FAI Jury, kept "The G ator” (Walt Perkins) from smokin’ 'em in the Final at the most recent World Champs and Gator was running a Nelson 15D. And so, against all odds, Henry Nelson did in fact come to rule the Engine Roost in a very hard-nosed event, FAI Team Race. Now w ith the glow m otor, due to be released June 1,1981, he and Joe Klause, Joe being the distributor of the engines, look to supplying anybody com ing up w ith $160.00 an engine that will outperform any previously offered .15 glow engine. At this time, there is no way I can make that statement from first hand experience, as the motors are not available as I write this. But if Henry makes the claim, and Joe backs him up, that is good enough for me. The engine itself is, of course, .15 APRIL 1981 49 "If you have a good memory, you can invent anything!"

• So says George Townson, long-time hour, and in about two hours of flying Top scale modeler Bill Noonan, San Diego, autogiro/helicopter test pilot and tech­ eats up his own weight in food. Fre­ with his CO? powered Farman 198. Note nical writer, noting that practically every quently, a bee, ranging too far in gather­ Flying Aces Nats T-Shirt. "new" idea in aviation has been done ing the flower pollen which he turns into before. honey, arrives empty at the hive, having etc. We can vouch for the idea being a AIRPLANES ON THE CEILING eaten up all he gathered. This inefficient good one and an exciting change-of- That’s the title of an article by Charles insect must then load up with honey pace from the usual one-at-a-time E. Planck w hich appeared in an old from the hive in order to fly out again to flights against the stop-watch type of (August, 1941) issue of Esquire magazine his raw material supply and load up for competition. sent to us by John J. Brown. Dealing with the trip back.” AND SPEAKING OF FLYING ACES insect power, it revealed several inter­ O N TIME? The FAC Nats II, probably the world's esting facts: "One of the first considera­ Roz Young’s column, sent in by Frank largest flying scale model meet, is now tions with insect engines is the tempera­ Scott, quotes retired Major General history and all glitches have been re­ ture of the airport where they are to be Chuck Wilson regarding the trouble- solved except one: A “ Found" is lost! operated. Some beetles, for example, plagued Space Shuttle. Scheduled for Walt M ooney’s Peanut Scale Found was have to sit still and rev up their wings flight in March, NASA has issued a mailed to the meet for proxy-flying and until they build up 30 degrees centi­ "sure-fire” desk calendar to avoid disappeared under mysterious circum­ grade before they have the power to further delay. The months are: January, stances. Anyone knowing the fate of this take off. The housefly gets underway February, M arch, M arch, M arch, March, model is invited to contact Walt at 2912 quickly in a warm room, but slows down March, March, March, March, March Cabrillo Mesa Drive, San Diego, CA perceptably with a dropping tempera­ and March! 92123. tu re ." AND SPEAKING OF BEDE RETURNS And regarding the honey bee: "His RETIRED GENERALS Thanks to TV coverage, and news­ wings beat 190 times a second. He Dave Scott, of the Flying Aces says his paper accounts provided by Dave Gib­ weighs .000156 pounds and has a wing group did not invent the "Battle Bird son, we can report on the most recentof area of .0003% square feet, w hich gives Combat” mass-launched free flight Jim Bede’s projects. Following the him a w ing loading of .3939, three times scale event, but that the credit rightfully demise of his homebuilt aircraft activi­ that of the fly. But he can fly faster and belongs to George Armstead, of the ties, he became interested in the auto­ carry a bigger load. . . .A bee can lift Glastonbury Connecticut Modelers motive scene and the search for greater 100 percent to 120 percent of his own club. Originally intended for WW-1 fuel efficiency. The result is a prototype Peanuts, the concept was later elabor­ weight, and the worker weighs 90 m illi­ Continued on page 86 grams. He flies about eight miles-an- ated upon to include WW-II, Jumbo,

Lett: noger Aime, Salon, France, w ith his electric powered Baby Ace F/F scale model. Above: Circa 1909 automobile radiator cap, presumably revolved in wind. Photo by Bill Williams.

50 R/C MODEL BUILDER

FZBI

i f i

Bill McDow launches his record-holding P-24 model. Note plastic prop required for this new indoor event. school work. (The only book one of the kids has read all the way through this year is Hand Launch Gliders by Kauf­ man). I’ve tried to help her by selecting appropriate kits, but even the simplest kits need an experienced modeler to interpret the plans and language for the grade reading level, with plenty of line of kits, such as is now put out by Lew kid. For example, to build the Sig Ther­ details or sketches to show how the hard Gitlow. Lew used to make the Micro mal Dart, you must know the meaning of parts are done. Dyne line of kits for indoor models in terms such as spar, leading edge, trailing A good introductory text to model the early 1960’s, but has been inactive for edge, rib, dihedral, gusset, etc. ... and building,such as the one Erv m entioned, a few years. But now he’s back, w ith learning the language can be really might be an acceptable substitute. But Indoor Model Supply putting out a frustrating to a 10-12 year old even if he how do you get them into the hands of complete line of kits and accessories, doesn’t have learning difficulties. interested beginners? The best place I including the famous Micro Dyne quality (Cynthia Sabransky makes the same can think of is through the school balsa. Kits include Pennyplane and Easy point in her 1979 NFFS Sympo article. library. Most school librarians I've met B designs for competition, plus some Building that First Model Airplane.) are genuinely interested in providing parlor designs (one’s a helicopter, like Most kits are not capable of being books that kids are interested in reading. the Jim W alker Ceiling Walker) for fun in completed by a newcomer, unless he At the junior high or elementary level, your living room. has the close personal attention of an model airplanes are a hot topic. If every Dave Hagen came back from his suc­ experienced builder. Even the A M A modeler visited their local school library cessful foray to the FAI In door Semi­ Delta Dart is not a "do-it-yourself” and made some suggestions to the finals (he made his first 30 minute flight) project for the unitiated. librarians as to suitable books, chances with some sample kits, which I plan to try Most of us have achieved the status of are that they will end up on the shelves, out this season. Send an SASE to Indoor experienced modelers by having some and another m odeler may join us at the Model Supply, Box C, Garberville, CA outside help, or. more rarely, through flying field. If your librarian is short on 95440, for a copy of the catalog . . . if you being extremely persistent in the face of funds, you might want to donate some hurry, you might be able to get a copy of adversity. It's difficult to revise kits volumes (or a magazinesubscription),as Lew’s book on In d o o r.. . only $2.95, but currently in production, but conscien­ your contribution to the future of free there are less than 40 copies left. If you tious manufacturers should make an flight. It would be tax-deductible, too! miss out, you’ll have to wait for Ron effort to see that kits intended for I’d like to compile a list of suitable Williams’ work. beginners can be built with no outside books on model aviation, that could be THE GODFATHER CHECKS IN, TOO assistance. Perhaps AMA could co­ used as a guide for librarians and publish I also received a tape cassette from ordinate some field tests for beginners it here a bit later. I have a fair amount of Bob W hite, recorded before, during and models in the hands of beginners, so books on the subject, but if you’ve got a after the WFFA contest, which took that before designating a kit as AMA- favorite to recommend, let me know place during my hospital stay. Bob's got approved, we would know how well- about it so it can be listed. some interesting ideas about the next suited it would be for the raw novice. A MICRO DYNE PRODUCTS Wakefields he will build? He feels that w ell-prepared set of instructions for NOW AVAILABLE the 3-minute Wakefield is now a reality such a kit should include a glossary of One thing that might help introduce Continued on page 94 terms, and should be at about the 5th indoor models to newcomers is a good

DARNED GOOD AIRFOIL - GOTT. 362

STATION 0 1.25 2 5 5 7.5 10 15 20 30 40 50 60 70 80 90 95 100

UPPER 0.8 2 6 5 3.55 4.75 5.55 6.4 7.5 8.2 8.75 8.5 7.85 6.75 5.4 3.8 2 1.05 0

LOWER 0.8 0.1 0 0.05 0.25 0.55 1.05 1.6 2.35 2.8 2.95 2.8 2.3 1.8 0.9 0.45 0

APRIL 1981 55 '— Λ \ '

T - —5 ?

z «3 \ !..M \ 1 \ ^ V ' M ibd \ \ Ž

/ T i ;d Ά

$ h-z' ^ τ \ 7

V J ‘Z s c N \ \ c

U*/ \ ^ \ íT i \ "n N í; -s? i § t v Ί j ^ v * 5 Μ ^ N > , e K lH ií a u K/] t l l f l ! s 7· & - ~ 1

56 R/C MODELBUILDER INTRODUCTION Taft, California, were FAI free flight Livotto meet was held the week prior to International meets within the United meets started in 1977 and 1976, respec­ the '79 W orld Champs at Taft, and thus States have not been held in previous tively. These meets were both included brought in a large entry who wanted to years except when hosting world cham­ on the international contest schedule practice and experience the wonder of pionship meets, be it free flight, R/C, through FAI in Paris fo r the first tim e in flying at Taft. The followiryg days brought U -control, or scale. 1979. The 1979 meets were scheduled to the practice and competition of the The Sierra Cup, in Sacramento, Cali­ provide 3 solid weeks of free flight World Champs entry north 400 miles to fornia, and the Livotto Invitational, in competition and fellowship. The 1979 Sacramento to participate in the Sierra Cup. Large it was, 58 entries in F1B (Wakefield), 46 entries in F1C (Power) and 78 entries in F1A (Glider). This year both the Livotto meet and the Sierra Cup were on the international schedule again, and with them again slated for 2 consecutive weekends, they provided a call to the international community to come partake of the California sunshine, flying and fellow­ ship. Friday morning, October 17, came sunny, cool, and crisp. My wife, Lynn, The Queen and her Court. A stunning array of very first class trophies for Sierra Cup winners. and I left Stockton to journey our short Fitting awards for a prestigious free flight event. APRIL 1981 57 X

Juan Livotto, USA team member proudly Mike Fantham, Great Britain, first in A/2 Chuck Dorsett, San Francisco, launches displaying 1980 Sierra Cup T-shirt. champagne flyoff with over 6 min. flight. W akefield. distance. 50 miles, to the Northern clear view without trees for 5 miles in all California free flight council (NCFFC) directions, ankle-high grass and weeds, flying field, where the 4th Sierra Cup and accessibility to many fields by bike Contest would take place. Lynn would and to all fields by foot. As we leveled head up the administrative task to the trailer, unpacked the scoring tables process, score, and coordinate this large and equipment, we looked over the contest. As for myself, I was looking early arrivals, some fliers out of New forward to competing in F1C power, a Yortk State, some out of Detroit, and good banquet, and perhaps a beautiful within an hour more were to arrive, trophy. including the Canadians. Proceeding up Interstate 5, we towed Dave Sugden, of Canada, and his our travel trailer, which would be parked fam ily, clim bed out of their car, smiled at in the middle of the field, serving not the warm air and no wind, and breathed only as our home for the weekend, but in the scent of what they called beauti­ also as the contest control site and as the ful, the scent of the small bush known as parking lot for 20 or 30 motorcycles for tar weed that would make life miserable the next 2 nights. for the A /2 fliers (truthfully, Dave says he Arriving at the site by 9:00 a.m., we just loves the smell of it). once again nodded our heads in ap­ As the afternoon passed, more and proval at the view of the field and what it more fliers arrived, many from Southern offered. Having flown both here and California, many from out of state,some abroad, from the forests of Cape Cod, USA wins Sierra Cup as country with best from Canada, England, and Denmark. Mass., to the cornfields of Chicago, to combined score of highest placers in each Up went the test flights, circle towing, the swamps of Louisiana, we know a event. (L to R): Roger Simpson, power; Matt screaming climbs, quick DT’s . . . some good flying field when we see one. A Gewain, A/2; and Walt Ghio, Wakefield. not quick enough. Later, as the sun set

Gail Gewain launches Matt's A/2 on winning flight. Sandy Bjerre holding husband Finn's A/2. Couple is from Denmark.

58 R/C MODEL BUILDER Power winners (L to R): Russ Backer 5th. Reid Simpson 3rd. Dave A/2 winners (L to R): Jose Dona 4th. Gary Medley 3rd, Matt Sugden 1st, Roger Simpson 2nd, and Doug Galbreath 4th. Gewain 1st, Lee Hines 2nd, and Mike Fantham 5th.

*

Wakefield winners (L to R): Joe Bilgri 5th. Bob White 3rd, Walt George Xenakis, 4th in Wakefield. He also received NFFS award for Ghio 1st, Joe Foster 2nd, and George Xenakis (in Photo at right) 4th. its Model of the Year recognition. and the air started to really cool, we choked to life, and I decided that there ing of the timers and posting the pole could hear the same statements from was no sense to lay in the warm bed assignmentsbytheadministrators. Roger many ... “ Boy, if tomorrow is just as anymore. Now, where’s the matches, Simpson was once again the Contest calm, what a contest it w ill b e !” As it was where’s the coffee? Director, and his careful attention to to be borne out, it was just as calm, just as Pre-processing had taken care of 95% detail and the assignment of respon­ warm, just as beautiful. .. whatacontest! of the registration and pole assignments, sibilities allowed him, at contest time, to At the crack of dawn Saturday, the cars so Saturday morning was spent test assume the role he wanted as a good ol’ rolled in, doors slammed, motorcycles flying by the contestants, and the brief­ power contestant.„ . . Continued on page 97

"See, Henry? I told you modeling was a bad influence on children. They're giving that kid a bottle of booze!" Hugo Sandroni, Jr. (age "What would we do without .. the scorekeepers, Inky Davis (left) 15) took 2nd in the A/2 Champagne Flyoff. Here's to ya, Hugo! and Lynn (Mrs. Reid) Simpson kept things in order. APRIL 1981 59 heavy, but the important thing about it is the original concept. This is the type of creative thinking that will lead to advancement in the state of the art in flapping wing aircraft. Unfortunately, the way the current AMA rule is written on ornithopters, there is little opportunity for experi­ mentation with different planforms, linkages, concepts, etc. What’s the difference where the stab is located, or how much fixed wing area is used; if the model is powered by flapping wings? The linkage on Dick Baxter’s Flapper is somewhat difficult to explain in the plan. The photo shows more graphically how the parts connect together. The covering used on the “ See-Saw” model is condenser paper. The span is 11-3/4 inches. If blown up to about 15 inch span, this flapper would fly nicely outdoors. QUEST-FIFTEEN FLAPPER Piper PA-15 Vagabond by Ken Johnson. This 29" indoor scale model built for big hangar at Your indoor column editor has just Norton APB. Bounced off every wall there. Bill Warner photo. finished and test-flown Ornithopter No. 101, dubb e d “ Q u e st-F ifte e n ” Series. The idea here is to throw away the rule- book on flappers and build a flapping wing indoor model of F.A.I. size that will fly for 15 minutes. Can it be done? Who can say? Indoor expert Bucky Servaites related to me in 1976, over lunch, that he believed that 15 or even 20 minutes was possible. The model would have to be • The ornithopter plan featured in this Mr. Baxter has built three other very light (microfilm covered) and very column is unique for several reasons. machines in this series, using front and efficient. First, it isa b ip la n e o rn ith o p te r.a n d a ll rear bellcrank driving systems. This Bucky’s offhand comment has stayed of the wing surfaces “ flap.” The wing model uses a different shape outline on with me, and I decided to try for this moves in a see-saw fashion. That is, as the flapping wings; more area at the "Impossible Dream.” The longest in­ one side goes up the other side goes wing tip and less at the center. I asked door time to date, that is recorded, is 5 down, i.e., the left tip of the top wing Dick if any difference was noted in minutes and 15 seconds. Thisauthor had goes down (see sketch) as the left tip of either the flight pattern or in the flight an unofficial time of 7 minutes, 30 the lower wing goes up. time. His answer was in the negative. seconds in 1975. The place was Santa Ana The unique rear bellcrank driving The reason the flapper has a long blimp hangar. The flapper arrangement system is located at the back of the boom at the front is to properly locate and linkage on the QFF model just motor stick. This arrangement necessi­ the center of gravity. Dick tells me that tested are the same as that on the Santa tates the use of torque tubes at the the motor stick could be made about 1 Ana model. The QFF is essentially an center of each flapping wing. These inch longer at the front and the boom F.A.I. model, but it is powered by tubes are essential to carry the twisting could be eliminated. The longer motor flapping wings. This first new ship is load from the bellcrank tothespar at the stick would allow more rubber length Micro-Lite covered, the flappers con­ leading edge of each flapping wing. An and more turns in the model. denser paper covered. arrangement of connecting rods carries There are no airfoil shapes used in this The first flights look promising. It is the movement of the bellcrank to the model. The wings are flat and the stalling somewhat and modifications on upper wing and back down to drive the stabilizer is flat, with no ribs. The air­ the flapper areas are planned for model lower wing. frame weight on this model is somewhat No. 2. Next column will carry a photo of

Florida's Dr. Martin with Martin MO-1 indoor rubber scale model. Flies 90 seconds on one loop of 1/8 FAI rubber. Linstrum photo.

60 R/C MODEL BUILDER Back view of Baxter flapper on holding stand. Note stab tilt for turn. Johnson photo.

ihis model. HOW TO MAKE OPEN COCKPIT PADDED RINGS Open cockpit airplanes are fun to build and fly. However, one part on this type of model has always been a "pain in the cockpit." This is the black padded ring that encircles the open cockpit. Slitting a length of plastic tubing is one way. However, the glue never holds for very long and then it starts separating and coming off. Here's a method that works very well for me. Sheet over the cockpit area completely, after detailing the interior (including the instrument panel). Step 1, Cover the entire fuselage with Japanese tissue, condenser paper, etc. Cut a pattern of the outside shape of the ring from 1/16 sheet balsa. Sand the outside edge of the pattern to a rounded shape. Then soak the wood in warm water till soft. Step 2. Form the pattern over the curved area on the cowl. Tape it down until dry. Then cement the ring pattern down carefully in exactly the right position. Step 3. Draw a line on the pattern for the inside edge of the ring. Using an Uber Skiver knife with a new, long pointed blade, cut down through the ring blank and cowl sheeting along this line. Tape a 3 inch length of fine sand­ paper around a 4 inch length of 1/4 inch hardwood dowel, and sand the inside edge of the ring to a round. When completed, the ring should look like a Indoor biplane designed and flown by 12-year-old Chris Johnson, Granada Hills. California. half-round in cross section. Phyllis Warner photo. Step 4. The only thing left to do is paint the ring w ith black dope. Use a small brush and go slowly so that you do a neat job. You will need to blow air into the open cockpit to remove the balsa chips and dust. THE STRONG ARM HANDLAUNCH GLIDER The second model presented this month is Tony Naccarato's category 1 glider. Tony and his mom, Addie Mae, build almost everything that flies in modeling. Whether it’s Radio Control, C ontrol Line, Free Flight, Scale or In­ door, the Naccaratos do it. and do it well. And the Strong Arm is no excep­ tion. Category 1 gliders usually climb left and glide left. This model does not. It flies right/right. I've seen this design fly many times at ourclubsessionsand it isa good, consistent performer.

APRIL 1981 61 Ken Johnson's Manhattan Cabin model "Flying Fish". Built for Cat. Boston cabin model "Boston Voyager" by Ken Johnson. This new 1 ceiling. Photo by Robert Yoha. event gaining popularity across the country. Built one yet? (Johnson)

Sixteen year old Bill Malo built four Dr. P.H. M a rtin ’s Radiant Concentrated comes with a pressure bottle called models of the Strong Arm and took Watercolor Dye. This product comes in a Propel. This can also be purchased them to the 1980 Free Flight Champs at great variety of colors and is available at separately in a small can for $3 or in a 17 Taft, California. The gym at Taft is only your local art supply store. Most of the ounce can for $4. The alternative to this about 22 feet in height, but Bill Malo 1/2-ounce bottles have a rubber bulb is an air compressor for about $75 and managed to turn in two flights of 22 cap like nosedrops bottles. The price is up. seconds each. Good enough for 1st around $1 per bottle. Spray the color on in light coats, place. The combination of Tony’s model Do not use the dye full strength. It allowing each coat to dry. Start at upper design and Bill’s building and flying wants to be cut to about 50%, w ith either left on the paper and spray at a distance expertise is a winner, all the way. Bill water or alcohol. Pre-mix the desired of about 6 inches from the paper. Move Malo’s models weighed in at 4 grams color in a small jar with a screw top. spray across to the right smoothly and each. For some time, I used a pump spray stop. Drop down and back to the left COLORING CONDENSER PAPER bottle, the type with an adjustable edge for the next pass. If the paint Indoor Scale and Peanut Scale models nozzle. The brand is Tru-Test, and the spatters, stop and adjust and/or clean fly best when covered with condenser plastic bottle with sprayer top is 11 the airbrush. paper. This material is very light, but it is inches high. It sorta worked pretty well. D on’t try to make the color too strong. not sold in colors. You must color it Then I bought an airbrush. I still use the Remember that you will be seeing the yourself. The natural color is a trans­ pump sprayer to mist water onto the color in double thickness on the model. parent off-white. The paper can be covered model. The idea is to snug the After the paper is smoothly colored and doped to a wood frame or the edges covering up without making it drum dry, cut the tape away at the corners and taped to the surface of white illustration tight. The framework of the model will carefully draw the paper away from the board (from your art supply store). The warp badly if the covering is too tight. illustration board. latter is best, since flaws in spraying can If you want to use an airbrush to spray Cover the model using dope as the be easily seen against the w hite back­ on the color, there are several brands to adhesive. To snug up the covering, hold ground of the board. choose from. The most economical one the parts 15 inches away and 12 inches There are two types of coloring dye is the Badger. It sells for under $25 and below the water sprayer. Spray across you can use and two types of sprayers to works well enough. The Thayer & and above the model parts, allowing spray the color on the condenser paper. Chandler and Paashe are about $50 and only the “ dust” of the water to settle on Some modelers have used McCor­ up. the covered model part. mick’s Food Coloring with moderate You will also need a source of air to NEW SUPPLY SOURCE success. The preferred color seems to be power the airbrush. The Badger kit FOR IN D O O R KITS Several years ago, indoor model supplier Lew G itlow sold out his stock to Micro-X and rested for awhile. Now Lew is back in the indoor supply business again, and offering two new kits, along with various sizes of new Pirelli rubber and indoor sheet wood. One kit contains two Parlor Copters, w ith very simple construction. Plans are printed on 11 x 17 inch paper and come with templates. The copters are 12 inch span and sell for $3.95. The other kit is a Pennyplane called the “ Time Machine.” It’s a beginner's model with an 18 inch span and also goes for $3.95. Lew claims 8-m inute flights are possible with this model. To order your goodies write to: In­ door Model Supply, Box C (LewGitlow), Garberville, CA 95440. Next time we will discuss flying dura­ tion models on just the right power Continued on page 64

62 R/C MODEL BUILDER APRIL 1981 63 Indoor Continued from page 62 spot, and make a controlled, gentle landing within a couple of feet of the combination to achieve the longest spot . . . a thing of beauty, grace, and flights possible under a given height of precision! If done incorrectly, it can be a ceiling. There are a lot of tricks the nightmare. Despite what some people experts use to get those long flights. think, spearing the spot shows nothing Write your comments, advice, or but lack of talent, lack of practice, and requests on indoor models to: Ken lack of respect for the sailplane. Johnson. 16052 Tulsa St., Granada Hills, ★ ★ ★ CA 91344. · Dave Kalb asks, "B u ilt It Light?” K .61 R/C Every building article I have ever read has included an admonition from the author to build his design light. He Soaring...... Continued from page 44 ENGINE proudly tells you that his plane, ready to fly, only weighs 32 ounces. Now I'm not mostly into the wind. When the altitude the skeptical type. I take this guy at his is judged correct, feed in opposite word. Although experience tells me that rudder to return the craft's heading to a model with a 12-foot wingspan has to the spot. The second method uses the weigh more than a mere 32 ounces, I sailplane's two most important speeds: belive this guy. After all, modelers don't minimum sink speed, and best forward lie . . . to their wives maybe, but not to speed. As you feed in up trim and other modelers. approach (but hopefully don't reach) Anyway, I buy a kit of this guy's dream stall speed, you will be flying at m ini­ machine, and take a good look at the mum sink. The sailplane will not be plans. Boy. is this thing light! The wing covering much ground, but will be ribs are 1/16 balsa spaced 12 inches apart losing altitude. Be ready with rudder to with two 1/8square balsa spars. Fuselage maintain heading. When the excess sides are 1/32 contest balsa with a 1/16 altitude has been lost, put a little down balsa doubler in the nose. The tail trim in to put the plane back to best assembly is built up of 1/16 square sticks. forward speed, and head for the spot. At this time, there is this small worry in This schnuerle ported .61 provides Don’t try the trim method until you the back of my m ind that maybe the easy starting, high performance and fully understand the difference between design is a little light for a 12-foot span. longevity. Produced with the finest minimum sink speed and best forward However, I do note that the designer is speed, and are proficient at controlling careful to point out that this plane must materials, workmanship and quality your sailplane at both speeds. I usually be covered with super-duper Monorite assurance, you'll be proud to have make my final altitude adjustment about to achieve the desired strength. Anyway, your aircraft powered by the K.6I. 25 yards from the spot, and shoot for 20 I build this bird meticulously; I even feet of altitude. Again, this depends on include the optional lightening holes in Suggested Retail: the wind and the particular plane I am the wing ribs and fuselage sides. My glue joints were perfect; everything filled S139.95 Muffler Included flying. Most pilots tend to undershoot with perfectly . . . this was my finest hour. planes like the Drifter II, Wanderer 72, Time to check the weight and balance. and the Gentle Lady. Overshooting can Hmm ... 50 ounces, without the radio T.61 R/C be a problem with Aquilas and SD-100s gear. But I thought the designer said 32 and the sleek, fast, and heavy FAI ships. ounces! Where could I have gone A trick I use with the Aquila is to aim (or wrong7 Maybe it was a misprint. Oh ENGINE the far side (from the pilot) of the circle, well, time to check the center of gravity. and overshoot to the center. There it is. right on the trailing edge of One Iasi point: If too high, d o n ’t put the wing. Let's see, with a 12 inch chord. the nose down. This will increase for­ I should only have to move the C.G. ward speed and the plane will keep on about 9 inches forward. With the radio flying past the spot, and past you. gear installed, and a solid lead nose If done correctly, a sailplane on block, this thing weighs 74 ounces. Can approach will make two smooth gentle it be that I've been misled by a fellow turns at proper altitude, line up with the modeler?

QUARTER-SCALE R/C SPRINT CAR Here’s your chance to enjoy all the excitement associat­ ed with full-size sprint cars at a fraction of the cost. This Is PACESETTER’S radio cont­ rolled sprint car, a .61 power­ ed aluminum, steel, and fiber­ Fuel efficient and easy handling! glass hu nk o f racing machine th a t drives w ith a sense of AVAILABLE SOON realism not attainable with 1/12 or 1/8-scale cars. · Wheelbase - 22* • Length - 34-1 / 2 " · W eight - 22 I bs. Complete kit, less engine and radio, factory direct • Width-16" · Wheel dia. - 3T/8" RJL INDUSTRIES o n ly , plus s h ip p in g ...... $699. • Brake drum dia. - 4" 1831 BUSINESS CENTER D R. NOTE: When ordering, specify engine to be used. Send $1.00 for brochure. DUARTE. CA 91010 P O BOX 5654. PASADENA. CA 91107 Garner Valley Box 257 1213)359-0016 PRODUCTS Mountain Center, California 92361 (714)659-2318

64 R/C MODEL BUILDER ©1980 ASSOCIATED ELECTRICS

An insider's look ol o Factory RC12E Full weight· sover treatment, super Reedy rewind power and our slick, new Voriloc differential (Body-1 12 Ferrari 312P)

SMU SHUTS IF THE TEAM

The power for the Team comes from the Reedy Modified 05 ... already twice the National champion. More than just rewinds, the hand-built Reedy's are indi­ vidually blueprinted to racing tolerances to provide Modified class drivers with canned dynamite. Each Reedy is also dyno-tuned, then bench run to perfectly seat the brushes and eliminate the need for "break-in."

Our VariLoc differential delivers total pertormonce Fits all RC12E's with no modifications and allows precise nne-tuning for maximum traction

A full winter's testing and a spectacular debut in ttie Western Regionals. The Team's top-secret differential was a winner right from the start. Our VariLoc is the proven racing differential for 1:12 scale electrics, featuring adjustable limited slip action, light weight and easy maintenance. Simply installed on any RC12E, the VariLoc puts all of your power to the ground, all of the time. And the increased efficiency of the VariLoc increases your run time significantly. High performance products like the VariLoc difLand Reedy motors can give your RC12E the competitive edge you need. That's why they are standard equipment on the Team's factory race cars.

ROAR Nationals Expert Closs 1:12 Scale Electrics Production Stock Modified 4 cell No event MRP RC12E 1978 6 cell No event RC12E RC12E 4 cell No event RC12E No event 1979 6 cell RC12E RC12E RC12E 1980 6 cell MRP RC12E RC12E TUM ASSOCIATED Coll or write for your tree copy of "Rocing with the Team." Official Newsletter of Teom Associated Associated Electrics/1928 East Edinger/Santa Ana/CA 92705 (714) 547-4986 OLDIES (BUT STILL GOODIES!) MOST BACK ISSUES OF "MODEL BUILDER" ARE STILL AVAILABLE, THOUGH SOME ARE IN SHORT SUPPLY. ORDER NOW, WHILE THEY LAST! PRICES VARY ACCORDING TO QUANTITY REMAINING IN STOCK. NOTE SPECIAL ANNIVERSARY PRICES LISTED BELOW!

November 1971 December 197 1 January 1972

Nancy. R/C soarer. Curtiss-Wright Junior SHOCer F/F by Mel HIC Pattern World R/C 2 " scale. S chm idt. Championship». R/C Twin Tramer White Trash, famous IPeanut Fokker D VI. 75" span, for 40's. R/C soarer. ILSF Tournament story. Peanut Laird LC-DC. Peanut Ord-Hume. Bi-Prentlce. H>C bipe Volksplane 3V-1 Chet Lanzo's famous tra iner. 3-views. rubber Puss M o th . How to build light Curtiss Robin 3-viewi. "w ire” wheels.

Vol. 1. No. 2 S3.00 V o l 1, N o. 3 $2.00 Vol. 2, No. 4 $1.00

February 1972 Mar/April 1972 May 1972 Seahorse II. R/C sea­ Minnow U/C profile Yankee Gull R/C glide' plane. For .19-.35. 8' to 12' span scale rac·. D.H. Humming Bird. Fokker E·1 ^ iC scale. Miss Cosmic Wind. QM F/F or R/C pulse. Al Vela's O Boy 1/2A R/C Pylon racer Peanut Fokker V-23. E-Z Βο· Ο .Α,ΑΙ Vela. Peanut Scale Bucker Whetstone 1/2A U/C Peanu o ^ d Flivver Jungmann. com bat. Fibe- 63 sing over balsa, Siebel 1/4 A F/F scale. Ryan ST 3 -views. by Le Gray. Mr. Mulligan 3 views. Tethered Cars, R/C sail. Spoiler. FAI Combat. FAI power "Folder."

Vol. 2. No. 5 S3.00 Vol. 2. No 6 S1.00 V ol. 2. No. 7 $2.00

June 1972 July 1972 August 1972 Bob White Wakefield. Fairchild 51, 1 ” scale. Bonzo stand' ' R/C Mongster QM biplane R/C or F/F. sport pv^'acele. R/C pylon racer SAM-5 A/2 'rdic. Counterf' O ailless Calif. Coester R/C 1912 Avrr^-ubber. A /1 ^ Jic. glider. Sheet wing. Comarv^^C stand-off Shoes- R/C QM. Three profile Peanuts. P ^V T cale Pear-ς Ο a y lo rc ra ft on Deperdussin 3 -views, Tr

V ol. 2, No. 10 $4.00 V o l. 2. No. 8 $3.00 Vol. 2. No 9 ’ S4.00

May 1973 m Feb/March 1973 A p ril 1973 Fabulous PEA POD. Bantee mini-pattern R/C Profile F4U Corsair C/L R/C sailboat 3channel. .19 power. stunt. 40 power. Bnegleb BG-1*’ . scale Woodwind A/2. all sheet Beecroft's Satan, Class A R /C soa covered wing. free fight. R/C Spi' O St. Louis. Slope soaring technique. Indoor Ornithopter sec y ^.a le . .049- 09. Teakettle, twin-doom Peanut Travelair 2000 Pea c P ^ o lk s p la n e CO 2 pusher. PT-3 Scale Views Finis.> painting of rub­ Peanut Monocoupe 110. Thermal hunting with ber scale models. Aerbo. .020 Replica. OT R/C gliders. V o l. 3. N o. 17 $3.00 Vol. 3. No. 18 $1.00 Vol. 3. No. 16 $2.00 Apr. 75 2.001 May 75 3.001 SPECIAL ! ! ! Put a check mark ( ) by the back issues you Jun. 75 1.251 MODEL BUILDER MAGAZINE'S Jul. 75 · 1.251 wish to order. Magazines will be mailed by Sec­ Aug. 7502.001 ond Class, postpaid. Foreign orders (except BACK-ISSUE SALE ! I Sep. 75 01.251 Canada, Mexico, FPO, APO) add 3(ty per copy. ANY ISSUE MARKED WITH "o' lb Cents! Oct. 75 01.251 Allow about four weeks for delivery. If United Nov. 7501-251 Parcel Service (UPS) is desired, add$i.25mini- ANY ISSUE MARKED WITH " · " 50 Cents! Dec. 7501-251 mum for up to two magazines,or addSi.25plus Jen. 76 01.501 354 for each additional magazine on orders for Feb. 7601.501 three or more Send check or Money Order (no Nov 71 $3.001 1 May 73 O 1.00« ) Apt. 74 01.00« Mer. 7601.501 cash, please, and no COD’s). A facsimile of this 74 1 001 Dm . 71 2.001 1 Jul. 73 · 1.00« 1 May Apr. 7601.501 order form may be used. Aug. 7 3 · 1.001 ) Jun. 74· 100« Jun. 7601-501 Jtfl. 72 ( 01.00« ) Sop. 73 · 1.00« 1 Jul. 74 0 1 .00« Jul. 76 01.501 N «m r Oct. 7 3 · 1.001 1 Aug. 7 4 *1 .0 0 1 Aug. 76 through M/A 72 • 1.00« 7 4 * 1 001 1 Nov. 7 3 0 1.00« ) S/O June 78. 1.501 ) Address »toy 2.001 7401.001 72 > Ooc. 7 3 · 1.00« ) Nov. Dec. 77 and Jun. 72 3.001 ) 7401.001 July 78 Sold Out Ο·« C ity: State: Jon. 74 O 1.00« ) J»n. 75 0 2.00« •Aug. 78 to date F/V 73 2.001 ) Fob. 74 · 1.00« ) F#b 75 2.00« each 2.00 ( ) / Jtorr-» ■ » 00« » Mor. 7401.00« ) •N ov 78 Sold out PLEASE PRINT ZIP: Mot. 75 2.00« R/C MODEL BUILDER. Box 335, 621 West 19th St., Costa Mesa, CA 92627

R/C MODEL BUILDER 6 6 Introducing Coverite's First Kit:

Sp o rtster

Back in the early 1930's, air races were hot stuff, and the ho tte st planes were being built by the Granville Brothers. Gee Bees they called them, and men like Jimmy Doolittle flew them at record breaking speeds. They were snazzy little devils, all dressed up in spats and scalloped paint. And yet. until now. no one has kitted a Gee Bee. There was always a doubt about whether a Gee Bee model could be built that would fly reliably. One man w ith a passion for planes o f the Golden Era set o u t to prove th a t the Gee Bees could pass muster. Henry Haffke knew that the original Gee Bees flew well enough to win ail sorts of races, and his research convinced him that models should do just as well. So he designed and built^The Gee Bee sportster, and began to fly her in competition, in contest after contest <17 in all). Henry's Gee Bee finished high up in the standings. A t Rhinebeck, she took "Best Combined Performance", putting to rest forever any doubt about the Gee Bees. So, here it is. Coverite's very first kit. And a labor of love it is. Every balsa and ply part carefully engineered so that even the smallest stringer fits snugly in place For the scale purist. Henry has included techniques fo r finishing . and we have included everything else you would expect in a kit of this quality. We’ve even included $1640 w o rth o f Super Coverite! So fly back w ith us to those Golden Days of the Thirties. Recapture the excitement o f the Cleveland National Air Races. Dream the dream o f the Granvilles. whose tin y company made only a handful of planes, but regularly beat the pants off the military's finest! Put a Gee Bee o f your own in the air. and marvel a t the way she handles

Kit includes 2 Rolls o f Super SPECIFICATIONS: PLUS: Coverite: a $16.40 value! Wing Span: 56", Length: 39", Super coverite is a 100% Polyester fabric Weight: 5-6 lbs., Power: 40 th a t irons on, wrinkle free, and achieves built-up balsa & ply construction the correct scale appearance of the Gee full size plans, detailed instruction book Bee. Super Coverite weighs only V* ounce let with photos per square foot yet has a tensile strength • 4-color scale decals in excess o f 25,000 psi. Ask anyone who • molded engine cowling & wheel pants uses Coverite and they'll tell you it's by far • pre-formed landing gear wire the most durable, easy to apply covering ■ complete hardware (links, rods, horns, of them all. bellcranks, wing bolts, hinges, LG straps & mounting screws) COMPLETE AIRFRAME TAKES ONLY • special scale parts including 8-10 HOURS TO BUILD!!! wing struts & flying wire COVERITE 420 BABYLON ROAD, HORSHAM, PENNSYLVANIA 19044,USA

APRIL 1981 67 Setting up the main rotor head prop­ erly is the most important part of the se' up process. First, everything must be balanced, particularly the main rotor blades. The easiest and fastest m ethod is HS FOR TUBING to bolt the two blades together, one w ith the leading edge up and the other with the leading edge down. Place two 4/40 x 1- inch bolts through the outer holes with a 1/2-inch shaft to pivot the blades through the center hole. To balance the blades, either add trim Monokote to the light blade, or drill material out of the tip of the heavy blade. Never add things like screws to the tip of the blade, especially on a high rpm machine like the Heli- boy. They like to fly off at times and can be very dangerous. See photo D. The other piece requiring static bal­ ance is the flybar. To balance the flybar, screw the paddles onto the flybar. Be sure they are screwed in the same amount on each paddle. Now center the flybar in the head by measuring the distance from the paddle to the collec­ tive yoke, and making these two dis­ tances equal. Now let tne bar teeter and either drill out a couple of 1/16 holes in the tip of the heavy paddle, or put a iece of tape on the light one. Set the lades up statically as described in the instruction book for collective pitch, amount of tail rotor compensation, etc. Finally your Heli-boy is set up statically, and it is tim e to fire up the engine and set the tracking of the main blades. With the machine running, all major tracking adjustments should be done with the top links (collective yoke to mixing levers). The best way to spot the blades is to use two 1-inch wide strips of day-glow orange trim Monokote, one at the tip and the other 1 inch in from the tip. This is so when the blades are tracking properly it appears like just one 2- inch piece. When the blades start out together and as you add throttle/collec- tive to lift off, they separate, then they are getting different amounts of control which says that either the swashplate isn’t lined up with the head, or the control arms for the blades are not the same distance from the head. Measure from the mixing levers to the side plates, or the mixing levers are way out. They should all be about the same length with major adjustments done from the top links. If the swashplate has a tendency to Oh, by the way, I met the designer last of the box and weigh it, allow 25% for move, it indicates that the follower is weekend at the local site. He was flying scrap and sanding, you find that the slipping on the shaft above the swash­ an Oly. I asked him for some advice on wood weighs more than the finished plate, which happens a lot. Drill a very his design and he told me that some plane, as advertised. I think it's lime for small (1/16-inch) hole in the plastic and design changes were going to be in­ the government to look into this matter! stick a coarse threaded wood screw in to cluded in later kits. He casually men­ How 'bout, "this model will weigh 35 secure the follower. tioned that on the first high start launch, ounces city, 45 ounces country, of In this article I have only touched the bird shed the wings and tail, and the course your weight may vary depending upon what I feel are the most common fuselage continued down range for on speed, weather, and how you build. procedures and problems encountered approximately 500 yards, where it im­ There’s more to say, but it’ll have to in setting up and flying the Heli-boy. I paled an 84-year-old lady riding a 10- wait ’til next month. See you soon. · haven’t touched upon throttle/collec- speed A lthough she has recovered tive mixing, tail rotor compensation almost completely, he said most of the rates, rpm requirements, and the dif­ royalties he is getting from the kit Choppers .. . . Continued from page 32 ferences encountered when you vary manufacturer, are going out in lawyer’s the coning angle of the main blades. The fees. modifications and adjustment pro­ Since this experience, I've built several of the preceding modifications are cedures I suggest here were learned by kits and noted one thing peculiar to installed, you are ready to set up the flying and crashing my Heli-boys. I hope most of them. If you take the wood out machine statically. my suggest ions will be helpful to others.·

6 8 R/C MODEL BUILDER 3 ) r i / i e r Π COMPOSITE KIT

2 METER CLASS COMPETITION SAILPLANE YET A TRAINER EXTRAORDINAIRE

Designed by Tom Williams

c SAILPLANE KIT. MONOKOTE. LAUNCHER. etc all FORONLY W ingSpan...... 6feet 554.95 Wing Area...... 573 sq. In.

2 cha£nelNr! dio ^ Wei9ht Wi‘h<>ut Radi° ...... 9 oz. Typical Flying W eight...... 18 oz. Wing Loading...... 4.5oz./ft.2 A irfo il...... FB1151

ABSOLUTELY NOTHING ELSE NEEDED

EXCEPT A 2 CHANNEL RADIO Craft-Air is now offering two composite kits, i.e., kits which EVERYTHING INCLUDED... EVEN THE GLUE! are complete except for the radio. • No longer does the new­ comer have to shop again and COMPOSITE KIT again to collect the proper accessories. MAY VERY WELL BE • No longer are potential R/C THE EASIEST TO FLY RADIO CONTROL TRAINER EVER DESIGNED hobbyists lost to the sport be­ cause of the wrong covering, engine, hi-start, etc. • No longer will it be nec­ essary to make repeated trips to the hobby shop to pick up v?'· items you forgot, or didn't Designed by know you needed. Tom Williams • And last, and probably most important, the chances of success of the beginner are CAT. 802 greatly enhanced. Your dealer should recom­ Wing Span...... 6 ft. Wing A rea...... 573 in.2 mend his choice of a 2 or 3 Flying W e ig h t...... 24 oz. channel radio and you should Landing Speed...... 16 m.p.h. be able to pick up the com­ (most trainers ...25-35 m.p.h.) plete ensemble at a very at­ Wing Loading...... 6 oz./ft.2 Engine...... 049 reed valve tractive price. A irfo il...... FB1151

- S č ž ů o , j f i n c - .

20115 NORDHOFF STREET!*I, CHATSWORTH, CALIFORNIA 91311 · (213)998-3700 interesting expletive or two. he had the car on the bench, tearing stuff off and bolting on new pieces, getting ready for a run-off for 3rd or 4th. He did get the car at least together enough to com plete It’s What’s Up Front! a run; evidently it didn’t even crash, ‘cause I would remember that . . . AND ANOTHER HICH-ZOOT CHARGER Leisure Electronics, a real pioneer in 1/12 electric cars, has released its new PUT AN H.B. ENGINE UP FRONT! charger, this one featuring a digital readout, slow charging and an adjust­ able current level for tailoring charge rates to different packs. More on this

H.B. 40 P.D.P charger later, as I just got it via MB’s H .B .15 offices and have yet to use it much. AND ANOTHER CLASS OF RACING??? W e now have 1/8 Gas cars, a very few 1/8 Electrics, 1 /1 2 ,049-powered Gas cars gathering dust, zillions of 1/12 electrics, quite a number of 1/12 off-road cars, and lots of interest in the 1/18 electric cars. If this isn't enough for you, JoMac has H.B. 21 P.D.P.* decided to go ahead with release of its H.B 61 P.D.P.* 1/12 scale Lightning 2000, powered by, get ready, a .10 size glow engine. As you 'Perry Directional Porting may have noticed, ROAR revised the TOP PERFORMANCE on F.A.I. FUEL! 1/12 Gas rules to allow this size of H.B. Engines offer a full line of model engines, a complete engine, the idea being that the .049’s choice of accessories and replacement parts. previously used are too unreliable for Write for FREE COLOR CATALOG meaningful racing. In the .10 class,there are any number of engines fitted with HB-ENGINES carbs that really carburate, so the little ItodinWGmair mills ought to work pretty well in an R/C BAVARIAN PRECISION PRODUCTS CO. · P O Box 6. Dept C. New Canaan. Connecticut 06840 car. How the combination will work on the track is just about anybody’s guess. he backed off enough to get some One thing for sure, the cars won’t lack steering, he was going to lose this very for power, as even a mediocre TD .049 R/C Cars.... Continued from page 41 close race. was generally too much power for a It was simply one of the neatest properly sorted-out 1/12 chassis. But if crashes I have ever seen in R/C car you are interested in fast twelfthers, side were several very strong, heavy racing. Bill hammered that car, full check it out. One of these hummers will boxes, constructed of 2x4’s and filled throttle, of course, smack dead into the blow by the fastest electric you have with concrete blocks. These boxes were end of that box. You think you have ever seen . . . at least on the straight. The being used as tie-down anchors for a destroyed some equipment, you should twisty bits might be another story, large tarp that covered the pit area and have seen this car. From the engine pod however. were heavy enough that to move them forward it was basically trash. As you APOLOGIES... required first emptying them of the w ould suspect, the Drag cars were built Damn and double-damn; I was just blocks. You guessed it . . . B ill’s car was rather lightly in the front end, not checking back in my copies of these R/C headed right at one of these immovable usually being driven into things like car columns and couldn’t believe it objects, that was clear enough, especial­ Road cars are. when I realized that two columns back- ly to Bill who was standing at the start Still, The Greek wasn’t done showing to-back were partially devoted to the line. Also quite clear was the fact that if how competitive he is. Following an new JoMac charger. Just goes to show you how messed up my office and memory have been of late. (Our fault ace high · w i i i / . n < i · ÆLPHÆ · nacU noni · G LH Π · PdCCR · diettdream * Guppy · SHRIKE too. We should have stopped you from going ape. wen) Probably sent the folks at JoMac into spasms getting double & A c li .... coverage on their charger. In fact. I’ll bet Span: 4 8 " some of the other manufacturers also Woight 11 o i. Engine .010 020 had a spasm or two. .. OFF-ROAD Still waiting to hear from some of you guys who are into dirt. Pictures, rules, suggested courses, anything at all will be of interest to the many R/C racers still just thinking about off-road racing. RUDDER ONLY PULSE Don’t forget to join ROAR. Now, not OR SUPER LIGHT DIGITAL & C L β - Α ^ , \ t later. · SEND $2 FOR 1980 81 CATALOG Th· veoifiblt NOMAD that hat trained thousand« of modeler«, previously manufactured by 50K221 NOMAD $13.95 HOUSE OF BALSA, n now ACE R/C. Inc. hengered at ACE BOX 5IID HIGGINSVILLI. MO 64037 816664 7171 ^ .M«ck-»oftf · G LH Π · P4CCR • didft dream · Guppy · s h r ik e · ÆLPWÆ · dick's dream · Guppy · shr ike 70 R/C MODEL BUILDER F/F Scale .... Continued from page 47 ture, using formers on top and bottom. For more complex shapes, the half-shell method, ala C uillow , may be preferred. This would typically be used for WW-II aircraft. Another method of enlarging three- views is by the use of a 35mm camera. If you photograph the three-view, make certain that when the picture is taken, the camera is at right angles tothe three- view, so there is no chanceof distortion. There are devices you can buy or build, which allow pictures to be taken from books, etc. with little difficulty. They even have lights! THE Once you have received the picture back from the photo lab, just insert it into your projector, and project it to LOCK OF THE whatever dimension you desire. Keep the projector at right angles to the walls. D on't set it down on a table and project CENTURY!... (AND THIS IS IT) upward. (Fernando is talking about slide Hidden behind the prop, inside the spinner, lies the most innovative spinner lock­ film here, not color print or black and ing device yet achieved. This beautiful one piece nose cone fits over the back plate white, wen) One neat idea is used by George and is positively locked on by sliding a hidden locking ring behind the prop, inside James. He found a small, older type of the spinner with a small screwdriver. The nose cone effortlessly pulls off when 35mm projector that is the single frame, disengaged and is put back on with equal ease in seconds. handfed type. He has it mounted on a unit that can be slid up and down, • NO BOLTS, THREADS, SCREWS, SLOTS OR TABS. varying the size of drawing he wants. The pictures have every detail and the • NO MORE PARTING LINES TO COLLECT DIRT. lines are all crisp and clear, making the • NO BLEMISHES OR VISIBLE BACK PLATES. enlargement of the three-view simplic­ ity itself. • EASY ON...EASY OFF! NO MORE HURTING The last method I’ll discuss, is theone I PALMS OR DAMAGED AIRPLANES use, the opaque projector. Being a school teacher, I have access to them at FROM TRYING TO“ SLAP” THAT work. This kind of projector will project OTHER SPINNER ON nicely from books, photos, drawings or whatever. I also have one that was made n o s e c o n e from a booklet available from Edmond Scientific Company. This booklet con­ Four locking lugs hold the spinner on l o c k in g r in g tains information on how to make a Ro t a t e s to tight. Made from space age polycar­ variety of opaque projectors, what kinds |-°?K N0SE CONE bonate. these spinners are practically >N PLACE of lenses to use, etc. Their catalog lists unbreakable and are not affected by the lenses available, and their costs. I've hot or cold temperatures! looked high and low for the catalog so I could provide you with the address. If 7 SIZES you have school kids, just have them ask their science teacher. Most schools have 1-Vi", 1-V4”, 2”, 2-V4”, this catalog. . . 2-1/2", 2-V4”, 3”Dia. What I like about my particular unit is that I have it mounted on a rail above a 4 COLORS MATCHED TO drawing table. This allows me to move the projector up and down. I’ve only MONOKOTE scratched the surface, but I hope you RED, WHITE, BLACK YELLOW have been given some ideas. Several months ago, I mentioned a NO DRILLING real neat C O 2 connector designed by l o c k in g Four adapter rings are included to fit Tom Sanders. This clever device makes it RING PINS S most engine shaft sizes. possible to interchange CO 2 engines without removing the tank and filler lines. These can be left intact in the PRICES FROM 2 , 5 0 - 4 . 0 0 model. One of the biggest drawbacks of CO 2 is the way the units have to be mounted. Everything is so permanent, CHECK ONE olioR|Te WORKS PERFECTLY WITH that to use it in another model almost YOUR sH0P* ELECTRIC STARTERS means total destruction of the first H O B B y 5 model. PATENT PENDING This connector can be mounted in tw o different ways. On an engine like DU-BRO PRODUCTS1 the TELCO, the unit can be soldered to the head, then the other part of the INCORPORATED 480 Bonner Road Wauconda. Illinois 600Θ4 U S A. APRIL 1981 71 drilled to take the male part of the hinge. The hole is reinforced with 1/32 ply­ wood on either side of the spar. After the wings have been con­ structed, the male part of the hinge is “ Jetted” in place so that the “ Knuckle” i part is just above the fabric line. tytg When I made the struts, I had to first establish their actual length. After doing b > " so, I made a small jig. This wasn't more Owning The than a piece of pine with two wire pins the correct distance apart. The female RADIO CONTROL half of the hinges are installed over the pins (one at either end). The strut itself BUYERS GUIDE was made in tw o halves w ith the hinge sandwiched in between. This system has worked well, keeping the strut lengths Is Like Having The the same. If you have any questions, drop me a Information in 260 line. F. Ramos. 19361 Mesa Dr., Villa Manufacturers’ Park, CA 92667. · Catalogs R/C Boats___Continued from page 31 The Guide has illustrations, descrip­ tions and prices for more than 2,400 hydroplane racers. Areas favoring the radio control items. The information in Division I type engines view Sport 40 as an entry level to hydroplane racing. this industry master catalog is organized, As of the tim e this article was being indexed and cross-indexed for easy written, the only area I know of that has reference officially adopted the Division II engine Included are the latest model cars, type is here in the Northwest. Those sailboats, power boats, aircraft, radio interested in Sport 40 in my area wanted systems, tools, books, building materials, an alternative to the very expensive and engines, and accessories. restrictive R/C U nlim ited class. Because of the rules governing R/C Unlimited, a The New 6th Edition has 280 8 V2" x person wishing to build and race a 11” pages of information. It is a must for certain hydroplane may not be able to every serious modeler. do that. These model boaters wanted a class where the boats at least were Suggested Retail *9.95 jj Yes, rush me my copy of the new 6th edition required to look like something that ! of The Radio Control Buyers Guide. could exist in full size and not be ■ Please check one: restricted in the area of speed by a limited type of engine requirement. The j L Enclosed is $11.00 ($9.95 retail plus $1.05 postage) (U.S and Canada Only — Canadians send U S. Funds) availability of quality racing engines is At Better more than adequate with the K&B or OCharge my □ Mastercharge DVisa OPS power plants in good supply. Com­ Hobby pared to Division I engines,a Division II Charge no._ Exp. Date.. engine will cost more to purchase and it Shops or will probably cost more to operate and I N a m e :, maintain. However, it will also produce Direct. more power and make the hydroplane a S tre e t:. bit quicker in speed. As was mentioned earlier, each indivi­ K City, State, Zip:______dual N.A.M.B.A. District will decide the cj Return to: R/C Buyers Guide, 6 Clifton House, Clifton, VA 22024 type of engine it will use. I have been contacted by a couple of people from connector is soldered to the gas line most effective and easy way of installa­ districts that plan to race Sport 40 in 1981. leading to the head. The other method is tion. On my AVRO, I used Robert's If what these people say is true, the to solder the connector on the gas line hinge points, which provide disassembly Division II type engine will be used in anywhere between the head and the and a “ Knock-off” feature as well. I have at least tw o districts where the class has tank. This set-up is better suited for the to admit that of all the different systems I not been run previously. It will be Brown Jr. have used, these hinges have been my interesting to see which engine Division To disconnect, simply unscrew one- favorite. These hinges come in different is officially adopted in the different half of the connector, that's all there is, sizes, providing some flexibility. districts. quick, easy, and effective. Here is a hint I want to pass along on WHAT ABOUT HULLS? The connector can be made easily how I attach these hinges to the wings Those interested in participating in using parts from a Bic lighter (disposable and struts. Incidentally, many of you the Sport 40 Class often ask my advise in type). Tom will provide you with a copy F/F’ers may not be fam iliar w ith these selecting a hull. A person who enjoys of the drawings for a buck (postage and hinges since they are primarily used for building a wooden kit hydroplane handling). That, my friends, is a bargain! R/C application. As the name implies, should certainly give serious considera­ Tom's address is Tom Sanders, 2422 N. Robart hinges, they're hinges which can tion to the “ Atlas Van Line U-76” kit by French St.. Santa Ana, CA 92706. be snapped apart and snapped together Dumas Boats. I have seen this boat Every time I build a gas-powered (see sketch). The first thing I do is locate modified to resemble numerous un­ biplane, I make the strut attachment the exact position of the interplane on limited hydroplanes besides the Atlas. different, I do this in order to find the the wing spars. Then the spars are are Leonard Feeback, well known in the 72 R/C MODEL BUILDER AH This and M ore!

Quality that provides performance you won’t believe! Made possible through pride in craftsmanship, in-house production and an intense desire to manufacture the best helicopter you could hope to buy .. .at any price! Mantis - the R/C Helicopter with something for everyone. FEATURES: SPECIFICATIONS: ★ A Full Size Master Plan with Nomenclature • Rotor Diameter - 41V2 ” ★ Instruction Manual - fully comprehensive with over • Tail Rotor Diameter - 9” 70 photographs that takes you step-by-step through all stages of construction and preflight. • Length (Nose to Tail) - 43” ★ Lightweight • Height-13Vi” ★ Variable Pitch via Tall Rotor Adjustment • Weight · 6 V2 lbs. ★ Easy Set-Up and Trimming • Radio - 4 Channel ★ Fail-Safe Clutch • Engine Size - .40 ★ Shielded Bearings Radio System and Engine Noi Included ★ Contains No Metric Parts - Spares Readily Available! ★ Schnurle Engine Not Required ★ No special tools required for assembly $ 1 4 9 ° ° · • Does Not Include Collective Pitch Send $2.00 tor main plan £ further Information MANTIS... It’s Alive! In Canada Contact: UDISCO 4660 Decarie Blvd. / M ontreal, Q uebec, C a n a da H3X 2H5 Telephone: (514) 481-8109 DEALER and DISTRIBUTOR INQUIRIES INVITED . . .

For Further Inform ation C all or Write: (714)744-7533 ★ ★ A m e r ic a n R/C Helicopters, Inc. 635-11 North Twin Oaks Valley Road · San Marcos, CA 92069! CG Snap-on Spinners-WAY OUT FRONTI Down through the years, many different spinners have come on the market — but only one has received wide-spread approval and sold in highest volume. The reasonable cost, ease of use, beautiful shape and excellent balance have made CG Snap-On-Spinners the admired favorites. With modelers everywhere, they're 'way out front! Available at your dealer in five colors, and five popular sizes. RED - WHITE - BLACK - YELLOW - BLUE

114"-$1.49 1%"-$1.79 2”-$2.10 u . s . patent 2y4"-$2.40 2% "-$2.75 3.822.138 For best service. see your dealer tor items you tvent. It not available, write direct add Si 00 per item ($2 00 outside U S 1 AVAILABLE IN CARL GOLDBERG MODELS. IIMC. 4736 West Chicago Avenue · Chicago, Illinois 60651

Southern California R/C Unlimited Los Angeles area Sport 40 races. I’ve seen two fiberglass hulls that I’m well ac­ class, is also kitting a lim ited num ber of Joe’s "Van P.X.” Sport 40 running 55 quainted with since I built and raced one wood Sport 40 kits. The Feeback Sport 40 mph with a front intake K&B 40 Marine o f them , the M uck Sport 40 . . . and was is a conventional, round nose, hydro­ engine. For information on the Feeback beaten a lot by the other one, the R/C plane similar to the very successful Sport 40, contact Leonard at 7906 Spinel Glass Sport 40. Steve M uck's R/C Boats, “ Van’s P.X.” used by Joe M onohan in Ave., Cucamonga, CA 91730. There are 6003 Daven Oaks, Dallas, TX 75248, can provide more information for those Γ (213) 764-1490 interested in a Sport 40 that looks like I b the Circus Circus or Squire Shop. This I C M ie ’s 1981 boat was the subject of a PRODUCTS IN I 0 > i R/C GOODIES USE colum n in Novem ber o f 1980. The cAeeessofties P.O. BOX 192 · VAN NUTS, CA. 91408 R/C Glass Sport 40 has proven to be very This month Q uvti«· is offering SPECIAL PRICES on several accessory items. Regular successful in Sport 40 events here in the prices are shown in small type; BARGAIN PRICES ore shown in heovy type. Northwest. For more information on this boat, contact Vic Drew, 1628 Corona, R/C SAFETY CAPS UNIVERSAL SERVO TRAY $8.95 M edford, OR 97501. As the popularity of Hi Visibility 2-Color Caps this class increases, there are sure to be match your 72 MHz Freq. more manufacturers offering hulls suit­ (Specify) One size fits a ll. able for use in Sport 40. This column will attempt to keep $6.50 Sh$X 9 inform ation flow ing on the Sport 40class $2 .7 9 as it enters it first year of official AIR-FLO HINGES 2+1 tray for Bantam, Cannon v v Vunai N.A.M.B.A. competition. I hope to be \ \ \ » CE-3, CE-4, CE-5, Futoba, ■•■a* X X číču»» doing a PRODUCTS IN U$E article about Kraft KPS—12, Midget servos. another hull suitable for use in the event Mtg. hardware included. w ithin the next few issues. FREQUENCY FLAGS I’M GLAD TO ANSWER ■ Replaces glow head on TD .049, QUESTIONS OVER THE TELEPHONE , .051, Golden Bee, etc. Uses Iron on Hinges, easy to Detachable holder, It seems as though many modelers std. 1/4-32 glow plug. instol I . Strips 36" Ig. polyester ribbons. SMALL (1") LARGE (l-l/2 ")y prefer picking up the telephone and $1.49 11,5 All Freq. colors. supporting Ma Bell rather than using $1.29 $1.49 e* 69* Uncle Sam’s postal service. I’ve talked $25.00 $1.59 $1.89 with model boaters from all over the ^ OR Add 50^ Shipping for Small Items. C a lif. Residents add states who have called to ask questions. MORE Sales Tax. Catalog - 50? U.S.A. ($1.50 Foreign). Since it appears that model boaters are

74 R/C MODEL BUILDER willing to pay for long distance phone calls, let me save you the trouble of WE GET LETTERS getting my phone number from direc­ PATENT tory assistance. My home phone number STARTED USING IT AND USED is (206) 584-7131 and I’m generally home PENDING· after 5:30 PST. I’ll gladly attempt to NOTHING ELSE SINCE - USED IT answer questions you might have, since EXCLUSIVELY AT WORLD CHAMPS $ 6 4 .9 5 it’s your nickle in the coin deposit. IN SOUTH AFRICA WITH MANY Letters, photos, contest results can be sent to: 119Crestwood Dr. S.W.,Tacoma, NICE COMMENTS. WA 98498. · MARK RADCLIFF C & D G L O -DRIVER 1979 U.S.A. AEROBATIC TEAM AVAILABLE AT YOUR Pattern...... Continued from page 24 SURE STARTS UNDER ALL CONDITIONS. HOBBY DEALER The standard method of doing the roll JOE BRIDI is to split-S, gather maximum speed, yank up elevator, roll 360°, and push C&D ENTERPRISES ( 714)968-6474 over the top before you stall out. Not 10042 Merrimac D r., Huntington Beach, CA 92646 too pretty, plus this technique will get you in a lot of trouble if you miss the hollowed, the extra weight is not a coat of dope, the color trim can be cut vertical pull-up by even a fraction of a penalty unless you build the rest of the out of tissue paper and doped in place. degree. Remember the 60° frame rule? model very lightly, in w hich case you This turns out to be worthy of some This means you establish a vertical know enough about modeling that you technical discussion. Since only one heading, roll 360° and re-establish don't need any building comments. BD-8 has been built so far, there is only vertical, then push over to horizontal all The top decking aft of the cockpit is one authentic color scheme. This is within 60° elevation from the judges 1/32 sheet balsa, back to the last form er. white overall with three color stripes, stand. To practice the maneuver, try Because the bend radius from there green, yellow, and red. The green th is ... back to the rudder spar is pretty small, stripe is uppermost. The stripes are Start at about 30 ft. altitude and about one centerline and two side stringers are separated by a thin white line. The 175 ft. out. Pull vertically in a tight used to maintain the aft fuselage shape. stripes are thickest at the trailing edge of quarter loop and maintain this heading The area under the windshield iswrapped the rudder and taper to a disappearing until you reach 60° elevation. Now push 1/32 sheet balsa. The nose block and its point at the front end. The green stripe over to level flight. Repeat this until it backing block is made from 1/4 thick ends 1/16-inch aft of the noseblock becomes fairly easy to predict the 60° balsa The backing block should be separation line, the yellow a half-inch angle. Now le t’s add the 360° roll. made carefully to be a snug fit in the further aft, and the red another half­ The roll should be centered in the front opening in the fuselage framing. inch aft. Because of the long sinuous vertical climb, but as you may have One problem most beginners experi­ shape of the stripes, and their thin white already guessed, the roll rate tends to ence is a loose backing block that allows sag after the first half of the roll. This is the nose block to fall off as soon as the ------minimized when the plane is light and motor tension is gone. The dangling The OCTURA CONNECTION!-the the low-speed thrust is high. Strong noseblock and propeller will work like a aileron forces are also required. We dethermalizer, but they really ruin the prefer a high roll rate (approximately glide. Besides, a loose noseblock will not UEXHEX 500° per second) which can be slowed as hold accurate thrust adjustments. A necessary by the transmitter set up. Try good-fitting, relatively thick backing FLEXIBLE SHAFT COUPLER counting the vertical leg to give you a block helps solve these problems. feeling of relative time. For instance ... Wing and tail structure uses the one-two-roll 360°-one-two-push to conventional multispar approach. The horizontal. This sequence of course will horizontal tail tips have the same airfoil take lots of practice to get into the 60° shape (symmetrical) as the rest of the frame. ribs. The rib shapes for the wing and We really enjoy pattern flying because horizontal tail are shown on the side it offers so many variables and challenges view. The wing tip shape is different both in building and flying. To you who from the wing ribs and is shown at the haven’t yet tried it, we can only say that right wing tip on the plans. The vertical you’re missing an opportunity to de­ tail ribs are shown above the top of the velop skills you can use for flying any­ vertical tail on the plans. thing from a slope soarer glider to a scale In this article, as in several previous B-36. I read somewhere that a pattern articles, I have called out several dif­ flyer couldn’t fly scale planes properly ferent thicknesses of sheet balsa. If because he had not developed real necessary, and to reduce costs, a single flying skills . . . Mule Fritters! · sheet of 1/16 sheet balsa w ill suffice. The thick pieces can be laminated, cement­ ing several layers of sheet together. The The Octura Flex-Hex Coupling lor flexible grain of the layers can be crossed for shafts uses an interchangeable collet, Peanut...... Continued from page 51 (available tor .250. .187. .150 or .135 items, like the noseblock, for added diameter cable) to hold the cable securely The model construction is conven­ strength. The sheet can also be sanded without fraying the end as with set screw tional throughout. There are no spec­ thinner using a flat supporting surface connectors Available to tit 5A.-24. %-28. tacular new techniques used in building and a sanding block. Of course, if you 7mm or 6mm threaded crankshafts. When it. I note, looking at the photos, that I intend to make several Peanut Scale ordering specify thread and collet sizes. Ordef directly only it not available at your local hobby forgot the tail strakes. The engine models from the plans in Model Builder, dealer — add 10% tor postage Illinois residents add cowling is carved from block balsa having several thicknesses of sheet balsa additional 5% tor sales tax cemented over the basic balsa stick w ill save tim e in construction. Send 50t tor catalog and price list to fuselage frame. Although this could be The BD-8 model is covered with white OCTURA MODELS, INC. lighter in weight if the cowl blocks were tissue. After water shrinking and thefirst 7351 N. Ham lin Ave · Skokie. IL 60076

APRIL 1981 75 model, dope it down on the fuselage, working from the aft end to the front. RUBBER WINDER The next stripe is placed adjacent to the first but separated by a sixteenth of an • Approximately 6 to 1 ratio inch for its entire length, using a similar • Smooth operation in either doping sequence. While the dope is d ire ction wet, the stripe can be pushed around by • Precision gears the brush to make minute location adjustments. This procedure is con­ • Case 2 -3 /1 6 " dia.. 3 /4 " th ic k tinued for all three stripes on both sides of the airplane. Control surface outlines and regis­ tration numbers, N88DH,are black ink. Dealer inquiries invited. Wheels, back face of propeller blades, and engine air inlets are flat black paint. GAYLORD PLASTICS Inc. Front faces of the propeller blades are (213) 829-3621 painted aluminum. Use thin white plas­ tic tape to simulate the cockpit framing. 1643 - 19th St., Santa Monica, CA 90404 The m odel should be made to balance at a point half way between the two top separation, they are d ifficu lt to cut out of therefore, we will cut out all the stripes spars. tissue without some sneaky techniques. at the same time. Using a sharp blade, If you feel the urge to be different, First, get an old magazine or catalog to cut along all the pencil lines. This will build your model without dihedral and use as a smooth cutting surface. Tape give us six tapered green, yellow , and fly it upside down (or else move to down sufficient layers of colored tissue red stripes, plus twelve thin parallel Australia to make your test flights). · to make all the stripes. That is, at least stripes of which only two green, two two layers of green, yellow, and red. yellow, and two red tapered stripes are Make sure all the layers of tissue are the correct ones for application. There is Plug Sparks . . Continued from page 36 smooth and without wrinkles. Now, on probably no easier way to obtain your vellum or tracing paper, lay out the close tolerance striping. Carefully select gas station (remember those 5 ft. rubber stripes required with a sharp pencil. Use the correct stripes for application. models fo r $1.00?), it seemed that box the side view of the plan as a guide. Tape Start w ith the yellow stripe and dope it after box came. These boxes were not this on top of the tissue that was taped down on the rudder in the correct small, being at least three feet by tw o on top of the magazine. Because all the location, then dope it along the down- feet and at the rate they were coming, stripes have to be separated by a con­ sweep onto the fuselage. Now stretch Pete was running out of room. Pete had stant amount, any error in cutting or out the long tapering thin end and, received his refund o f $12.50 at a w hole­ placement will be immediately apparent. holding the point on the nose of the sale rate from C H Q . Pete said, "There were literally hundreds of kits" as he pushed the auto material off the shelves to make room for the kits. It didn’t take long for the neighbor­ C L U B S L O V E / hood kids to find out Pete Dillon had model airplane kits in stock. Sales got to the point where Pete was doing a better T H E S T U F F i business selling kits than he was pump­ ing gas (a lot cleaner, too!). So fellows, that is now Pete Dillion Drums for the Active Flyers quit the gasoline station business and started a successful hobby shop that By the Pint, or Quart, or Gallon lasted until the late seventies. Full credit should be given to that much maligned com pany, G H Q , fo r starting Pete o ff in a BULK very happy and successful livelihood. Truth is stranger than fiction!! SAM REPORT FUEL As we m entioned in the last colum n, we will try to catch up on some of the "goodies" found in the various news­ In 55 letters received from the various chapters. FOX FUEL Gallon Drums! Before launching into the writeup. Al FOX SUPERFUEL-Good break- Heilman has announced the SAM Champs (scheduled for the West in 1981) in oil rich formula (28%) DUKE'S FUEL (10% Nitro) w ill be held at Taft on June 30, July 1, and Pt. $3.05; Qt. $5.05; Gal. $16.75 55 Gal. Drum, net $260.00 (includes Drum) July 2. Al is presently acting as Contest DUKE’S FUEL: Especially blended Manager and West Coast Vice President, for R/C and Sport flying. F.A.I. FUEL (No Nitro) so making decisions should involve Pt. $3.40; Qt. $5.60; Gal. $18.95 55 Gal. Drum, net $145.00 (includes Drum) more than two people. MISSILE MIST: A premium fuel for For the benefit of those who don't “power”. 25% Nitro. know where Taft is located, the town can We Ship Freight Collect. Payment required Pt. $4.20; Qt. $7.60; Gal. $25.90 in advance lor the Drums of Fuel... be found 25 miles due west of 1-5 roughly 25 miles south of Bakersfield, the closest city. Those flying into LA Airport Our Hot Line can Help: (501) 646-1656 (Central Standard Time) should arrange for transportation, as it is 100 miles plus from the International to MFG. CO. 5305 T0WS0N AVE. FORT SMITH. ARK. 72901 the field. FOX >00000000000000000000000000 76 R/C MODEL BUILDER 1 STERLING MODELS Presents: The

t . > % * "KIDS” Series

|T: K1 - Aeronca Champion

KIT: K2 - Sonic Turtle

21" Wingspans

7 . 9 5 ea

KIT: K3 - Luscombe Sedan featuring kits THAT MAKE model builders! for kids of all ages

STERLING MODELS · J620 G ST PHILA PA 19134 Three beautiful new designs kitted to the needs of those who never built □ Catalog of entire lne of airplane control line model kits R C scale and Trainer kits boat model kits, accessories, etc 50* enclosed a model. Learn to build and fly all three models. . . An absolute pleasure □ Secrets of Model Airplane Building Including design, construction cover­ for the experienced model builder . . . Be the pro in your neighborhood ing. finishing, flying, adjusting, control systems, etc 50' enclosed □ Secrets of Control Line and Carrier Flying Including preflight soloing, . . . Teach someone to be a model builder! stunting Carrier rules and regulations Carner flying hints and control line installation instructions 50· enclosed No checks Only U S money orders or currency accepted Kits contain: Die-cut Balsa Parts, Prop, Wheels, Rubber Motor, Colored Name______Tissue, Clear Celluloid for windows, colorful Decal, Plan and separate Teaching Instruction Sheet. Address______City State SAM 4 This number has been taken over by the Michigan Antique Modelers (MAM) through the courtesy of Woody Bartelt, former Midwest SAM Vice President. SIX SHOOTER FOEL PUMP Woody is just delighted a successful club NOW AVAILABLE FOR GASOLINE & DIESEL FUEL has emerged in Michigan as the club he X IU has formed suffered from lack of mem­ EITHER bership. APPROX. .6 oz. The M A M group has staged at least Γ ^ Λ VERSION per revolution tw o or three meets in 1980. ending up $10.95 w ith a $300.00 surplus in the Treasury from all activities, contests, dues, etc. Looks like "Krazy Karl” Spielmaker (the main Sparkplug) isn’t so crazy after all! SAM 6 THE ONLY John Peck writes to say the new PUMP AVAILABLE proposal to restore glow engines for HAND CRANKED FOR USE WITH powering old timers may be just the FOR SAFE DIESEL FUEL thing to revive his club! John points out, RELIABLE USE glow engines, with proper handicap, are allowed in old timer competitions in the SEE YOUR DEALER OR DISTRIBUTOR M idwest. As proof, he states they have been running meets like this before and DAVE BROWN PRODUCTS after the ruling banning glow engines in 8534 HUOOLESTON CINCINNATI. OHIO 45236 AREA CODE (513) 7910744 free flight. Regardless of how the vote turns out, this columnist is hopeful Peck will reorganize the club and start putting on At last reports, camping will be fornia Ignition Flyers) newsletter, some activities. O/T flying is once again allowed on the field. However, there are “ Flightplug,” continues to be a newsy emerging as the most popular contests no water facilities, you’ll have to carry and entertaining bit of writing thanks to in the Midwest, an extra push won’t hurt your own for cooking and washup. This the editorship of Ken Sýkora, sometimes one bit! is an extremely popular way to go to Taft, known as "King Sugar.” The newsletter SAM 7 and many a good campfire meal has is available to all and can be obtained for Correspondence from George Arm­ been served with good fellowship. $3.50/year by simply sending money to stead indicates the “ Yankee” Chapter SAM 1 Ken Sýkora, 6716 Noble Ave.. Van Nuys, may be willing to stage the 1982 SAM Preliminary inquiries to SAM 1 indi­ CA 91405. Champs at W endover AFB. George says cate there is a definite possibility the The SCIFS have just concluded an­ they would have to run it over the 1983 SAM Champs could be held in other successful flying season and have weekend. If they can get Friday, Satur­ Denver, as SAM 1 has been quite for­ already worked up a schedule for 1981. day and Sunday, there is no problem as tunate in locating and leasing an excel­ Just as soon as Vice President Al Hell- the SAM Champs have been run twice lent large site just barely south of Denver man n figures out how to allocate the this way at W right-Patterson AFB. city limits. More on that later. dates, we will run the schedule in this SAM 8 SAM 3 column. Don't let your subscription to Tom Cope, editor of SAM 8 news­ As usual, the SCIF (Southern Cali­ Model Builder lapse! letter, has been quite faithful in his reports from the greater Northwest. As noted in the last colum n, Clarence Bull has made up a trophy just for an event From Italy, The New B&C-61 featuring the use of Brown Jr. engines only. Big power - low weight and frontal area. Fit for scale model fighter Photo No. 5 shows the neat handiwork aircraft, especially Ducted Fan. of Clarence Bull. Tom Cope says in a Available for immediate delivery. recent letter, that if there is not enough interest to keep a perpetual trophy alive, then the trophy will be "moved” Specifications: to the SAM National Champs. At present, Total displacement - the trophy was intended for a Two 9.92cc (.61cu. in.) Minute Time Target Event with models Stroke - 17.50mm powered by Brown Jr. motors. As an Bore -1 9.00mm added quirk, the particular model used Weight - 51 Og (18 oz.) must have been designed around a HP-2.10 at 24,000 rpm Brown Jr. back in those days. The Brown Jr. motor mounted at the top of the trophy is an authentic Brown Jr., Model C. To properly finish off the The twin inline B&C-61 is a shaft-induction, Schnuerle-scavenged, lapped piston motor trophy. Bull has created a scale Miss with a four ball-bearing crankshaft. It uses a one-piece sand-cast crankcase and the con­ Philly IV suspended on a wire from the necting rods are machined from high-duty alloy w ith bronze bushed big-ends. Engine is spark plug. The trophy features brass an alternate firing type with a single R/C Perry carburettor, so it has low level of vibra­ plates and mahogony base that makes it tion and easy starting.The MINI-VOX Super Silent muffler, designed for this engine, and very attractive. If SAM gets it, any ideas all other parts are available. Anyone interested in acquiring or other information, may write directly to the manufacturer. Shipping to all parts of the world. Dealer inquiries of what to award it for? Of should SAM perpetuate the 2-minute Event pro­ posed and sponsored by Gene Lapansie G. BERTELLA at the Wright-Patterson Champs. Food Via Matteotti, 248-25063 - Gardone V.T. (Brescia) ITALY for thought, men!

78 R/C MODEL BUILDER OBIT NOTICE Tom Cope also writes to say Elmer NEW: GRAPHICS STARS! Roth is dead. Anyone who used to drive THEY’LL MAKE AN ARTIST OUT OF YOU up north towards the state of Washing­ ton would have to go through The Graphics stars are available Dalles. in red, white or blue. Same Here is where Elmer Roth had his “ Rolls Royce” quality as nationally known Cherry City Model Shop. Even after he had closed his doors, Graphics numbers & letters.^ he had such a tremendous backlog of 100% cast vinyl. Paper thin. old engines and kits, that people would Die-Cut. Press-on continue to drop in on him in the hopes of obtaining old timer material. adhesive. Totally In some ways, Elmer was a crotchety fuelproof. Each old codger. If he liked you, you could Sheet contains 4 make out like a bandit, but if you struck different size stars him the wrong way, you would pay hell trying to get something out of Roth. (3", 2", Γ , y2"). W e’re gonna miss that side trip! MORE SAM 8 Bob Shafer has always thought that lightweight silk was the ideal covering material in view of its lightness and strength. Shafer gave a small sample of the black silkspan and w hite silk from his Rambler to a Chevron research man to weigh the pieces on Metier Balance Scales. These scales are so accurate, they Enough stars to can sense the weight of a pencil mark on finish many planes, a piece of paper. boats or cars With Tom Cope and Ray Chalker (models & full) adding other samples, a compilation has been made. Pieces were 2x2-1/2 inches, scale too!) ^ all the same size. The reduction of error is furthered by using material from an actual flying model. As Bob says, each material has its advantages and draw­ C®VB=HTE backs, so he w on’t hazard any recom ­ 420 BABYLON ROAD. HORSHAM, PENNSYLVANIA 19044. U S A mendations. You can decide for yourself from the chart below: conjunction with the ASME Nationals. COMPARISON OF COVERING MATERIALS We will have further information on this Grams/ Wt. % of O z./ in upcom ing issues. 5 sq.in. Silkspan 10 sq. ft. For those interested in joining the fun Lt. Red JapanescTissue.3cOats. very thin. (SAM 36 to you), the present 150 mem­ Nitrate Dope. Typic al rubber model. .0955 53 .970 bers extend a welcome to you. To get into the act, write to Ben Buckle, 9 Islay W hite Silk lightw eight. 5 coats Cresent, Highworth, Swindon, Wilts, thin Nitrate Dope. .1240 68 1.260 England SN6 7HL. Orange Skysail. 4 coats 50/50 Photo No. 6 is a shot taken at Scul- Butyrate Dope. .1767 98 1.795 thorpe AFB, site of the 1980 SAME Black Silkspan. 5 coats thin Champs. Ben was Contest Director for Nitrate Dope. .1811 100 1.840 this meet that unfortunately suffered from high winds. In this photo, Ben is W hile lapanese Tissue. 3 coats 50/50 thoroughly familiarizing himself with Butyrate plus. 1 coat Fuel Proofer. .2389 132 2.427 the new British R/C rules as promul­ Nylon. Vari-color. 6 coats 50/50 gated by Malcolm Taylor. Butyrate Dope. .2395 132 2.433 Also from Alex Imrie, 66 Tuffnells Red Monokote as is. .2432 134 2.471 Way, Harpenden, Herts, England AL5 3H6, comes photo N<5. 7, showing a Orange Coverite as is. .3608 199 3.665

Well, we ran out of space again for the Editor of the English version of "SAM BARRONS SCALE CLASSICS Chapter reports, but we will continue Speaks.” In this case. Ben has proposed p l a n s w i t h c o n s t m a n u a l the good news in next month’s issue. Be taking the existing issue of SAM Speaks, ■» s p o r t s c a l e a t i t s f i n e s t — of good cheer, you’ll get in the maga­ collating all the English activities and CURTISS HAWK P6E S I2 .5 0 zine yet! then printing the whole thing as one CURTISS GOSHAWK Fil f 15.00 FOREIGN NEWS issue. This should keep all the modelers CURTISS GULFHAWK ΙΑ | I5.00 ENGLAND in England fully conversant with what is ;iN SCALE S3 IN SPAN Several recent telephone calls from going on in the rest of the world. STINSON RELIANT SR9 $ I5.00 Ben Buckle, of England, plus a liberally Buckle will also be the P.R. man (he ŽIN SCALE »«IN SEAN __ annotated Christmas card indicate that regards himself as "General Mouth­ PLEASE ADD *2.00 FOR P/ H SAM 35 (the English Chapter) is now piece"). Ray Alban is now the Chairman A LS O A V A ILA B LE IN 1/4 SCALE formally constituted. Dave Baker, who of SAME (SAM 36) and his main job will SEND 81.00 FOR COMPLETE was the initial spark plug for O/T flying be to stop public bickering over old INFORMATION TO— ’ ’ in England, has been made Honorary timer rules and models (and the USA RICHARD G BARRON President. thinks they have problems). The English 1213 HOLLY SPRING LANE Buckle further states he is to be the SAM Champs will be held this year in GRAND BLANC, MICHIGAN 48439 APRIL 1981 79 MAINE LOBSTER BOAT "SEGUIN", WOODEN STI Length 33" IOA) Beam 11" Lengtt (Gas or electric oower) (Steam o

NEW ! LARGER SCALE !! FOR RADIO CONTROL !!! Each model is the result o f careful research and is authentic in detail. A ll feature plank construction from select, pre-cut bass and mahogany wood parts. Complete with fitting sets, including (as required) propel­ ler, cleats, chocks, blocks, wheel, running lights, and brass components.

New, full-color catalog for these and other kits - $2.50 THE LAUGHING WHALE Box 191. Wiscasset. Maine 04578 207-882-6870 MUSCONGEOUS Length 46" Beam 10-1/2" ______(Sail power only) little known L.S. Wigdor design known engines. Fellows in the USA should also Latest word from David Anderson, 23 as the "W asp.” Alex has powered his be alerted for any sales or trades with Godfrey, Leabrook, So. Australia 5068, is Wasp with a Frog 1.75cc diesel, utilizing rare engines available in England. that the 1980-81 Australian Nationals the Aerom odeller A pril 1938 issue to We can’t give you the complete were held at Albany, West Australia. scale from . Im rie has fu rth e r detailed the rundown on all engines missing, but we That’s about as far as you can get from model in all silver with paper covering. It would like to mention the more the east side of Australia, where 80% of hassince been recovered w ith nylon. No prominent ones: Morton M5, Ohlsson the population resides. reports on how the Wasp flies, but Gold Seal #3474, plus one unserialized, Dave says to be of good cheer because knowing Alex, he will get it sorted out. Ohlsson M iniature (N/S) and #1159, Elf the 1981-82 Nationals are scheduled for More news comes from England, this Twin #505, Edco Sky Devil, Barker #362, Horsham, Victoria. This promises to rival time bad! Ron Raddon, of 22 Byng Road, Hurleman Aristocrat #748, and a flock of the last Victorian meet staged in Cam- Barnet, Herts, England EN5 4NR, writes others adding up to a total of 45 engines. perdow n in 1978. The local Victorians to say his workshop has been cleaned That’s grand larceny men! Don’t be a have started planning already to put on out of his precious old timer engines. party to it! the biggest and best Nationals yet. If you These stolen engines are worth some Here’s hoping Ron recovers the stolen are traveling to Australia at the end of real money, so fellows in England should merchandise. That is really a chilling the year, here is an excellent meet to be very careful in making purchases of setback to any engine collector. take in. How about that? apparently "new finds" in old timer AUSTRALIA Monty Tyrrell, of Mulgrave, Victoria,

P r o ROD NYROD S u -P r-ROD MASTEROD SXEROD -X F

The Leader in ADVANCED Push-Rod Systems PLAINFIELD. ILLINOIS 60544

8 0 R/C MODEL BUILDER also reports he is a little put out about Horsham as he (as part of the Nats Steering Committee) had offered a field located 17 miles from him that would fit When you ttáik retracts ··· the requirements of all phases of com­ petition. Horsham will be real hot, running at least 100° every day, but the THINK town is fairly large and plenty of pubs are available to serve that great Australian beer. Photo No. 8 shows the latest creation of Monty Tyrrell, which is now three years old. The Bellanca CH-200 "Cape R O M A I R C od” is equipped w ith an OS60 Four- Cycle engine and Futaba 5-channel radio. Monty reports the model has never been out of the money when entered in the scale events. When it is flying (for all the world like * H H M W a real old timer), it looks just like Russell Boardman and John Polando heading * FIAT MOUNTED for Turkey from New York on a non-stop * STANDARD MAINS Reversible-Inboard or outboard cylinders NOSE GEAR flight, in July 1931, in the real "Cape Cod” Bellanca. Monty is presently contemplating an endurance flight to commemorate the 50th Anniversary of the original. We’ll have more on that! SWEDEN We are again indebted to Sven-Olav Linden, of Orebro, Sweden, for photo No. 9, taken at an old tim er contest last July. Kurt Sandberg is shown w ith his replica of the 1949 A-2 Swedish Cham­ pion. This design appeared in the 1951- 52 Zaic Year Book. It is no surprise the model is still an excellent glider. THISSA AND THATTA No colum n w ould be com plete o f late if we didn't have a picture of Bill Baker’s handiwork. Photo No. 10 shows the good flying Lidgard (pronounced Lid- yard) H i-H o that did so well at the 1980 SAM Champs. Bill also sent us some trimming tips on his twin pusher, which we will pass on to you next month. More goodies to come! COLOR CODED HOOK UP TURING A lot of people have been asking what a California Chief looks like, so Gordon OTHER MODELS AVAILABLE: Codding, of Kingman, Arizona, was kind •F.A.I. MAINS CytimUr Outboard - Not RovaniMo enough to send us Photo No. 11, which MAINS for PLATT FW 1 90-D9 -with J/U" Fr.form«d W,r. 90 ROTATION MAINS for P-40 Tomahawk or F4U Cortoir shows a "C alifornia Cheese" (as we used »HEAVY J/U" STRUTS oa tpociol order only. to call them) powered by an ED2.46 diesel. In spite of the fact he did not have a Baby Cyclone to complete the authen­ ^.n ROM AIR-CHOICE OF CHAMPIONS ticity of the model (designed specifi­ HHOM cally for that engine), Gordon used a © RHOM PRODUCES MANUFACTURING CORP. British Kielkraft "True Flex” propeller to 924 65th Street, Brooklyn, New York 11219 fly the model. That prop is a real collec­ tor’s item. Takes real guts to risk a jewel like that! While handing out the kudos for 21 meet at Half Moon B^y. Good going, Although we didn't have time to write unselfish work, we missed showing a Pete! up the SAFFS (Sierra Antique Free picture of Clarence Bull, who put up the THE WRAP-UP Flight Society) activities, we would like trophy for SAM 8. Photo No. 13 shows "Never give up hope!” is the caption to feature a picture of Manny Gomez’s Clarence with his good flying Cabruler of the latest newsletter of SAM 32 re­ Turner Special, as seen in Photo No. 12. model, a Henry Struck plan available at ceived from Jim Perssons, editor. Jim As can be seen, the model is a radio Model Builder (Plan 476-O.T.. $4.00). attended the 1978 SAM Champs at the controlled version, indicating the club Flies real great according to Bull. Coyle Air D rop, in New Jersey. This has room for all phases of flying despite Finally, in Photo No. 14, we are again flying site was surrounded by very its title. Gomez is one of the original showing Pete Samuelson w ith his rebuilt formidable brush which, as it turned members of SAFFS and guarantees all Westerner C and his new 1/2A Texaco out, claimed many a model, as the brush interested modelers in the Reno area version (See, they do reproduce in was practically im penetrable. won’t be disappointed if they join this captivity!). As mentioned previously, Jim left a Comet C lipper w ith a brand club. Pete has had the darndest luck w ith new ignition Torpedo 29 in the brambles If interested, contact Phil McCary, model adjustment, radio problems, and and figured tough luck. But wouldn’t 3283 Old US 395 North, Carson City, NV just plain pilot error (thumb glitches to you know it, Bob Sifleet is out test flying 89701. Phil is one of those great guys who you!). This is apparently past now, as in this area and stumbles upon Persson’s everyone takes a liking to! Pete placed rather high at the PCC-SAM Clipper. As he wrote Jim, "It appears to APRIL 1981 81 TWISTER-60 $179.95 EXCITING NEW KITS AND 80% COMPLETED A.R.F. R/C MODELS . . . FROM THE BEST IN JAPAN!! CANDY, TWISTER, a n d Y A M A TO are 80°v completed, factory- built models in traditional balsa and plyw ood materials, as shown in photo at right SKY M ATE is a complete kit. with all parts pre­ cut to exact si2e.

Add $2.00 to each kit for postage and handling. Arizona residents add 4% Sales Tax. COLOR CATALOG OF ALL ITEMS: SI. 00 f P L A Y T R O N ] 344 London Bridge Plaza, Suite D 1 ^ ------Lake Havasu City, AZ 86403

be in fair shape, even possible to repair THAT REMINDS ME... after two years in the Pine Barrens." C/L ...... Continued from page 49 As you should recall, I have probably Jim had Bob send only the motor and (and probably uncharted) at speeds the mentioned it enough times, I fly some timers, hoping to salvage some parts. model and motor were never able to R/C on the side, generally during the The engine, as it turned up, was in pretty even approach when attached to lines winter when the nasty weather keeps fair shape needing only prop washers and handle. the quackers (ducks) inside and about and cylinder. Now to find some parts! Of such experiences are truly superb the only people out flying R/C are those Never give up hope!! Amen to that, Combat Tales and Stories made, as well who pretty much know which end is up brother. · as converts to the less exciting, but lots and are out there to do some serious cheaper, world of R/C. . . flying, not just hour after hour of socializ-

1/ 4-Scale STAMPE SV4B There have been several Stampe designs over the years, but the SV4 biplane series Span 84" remains the most well known and is a popular participant at Air Shows all over Fuselage 69" $ 325.00 Europe and the U.S.A. The very complete kit contains all prefabricated balsa and plywood parts, a nylon Empty Weight 13 lbs. Freight Prepaid tank, pre-formed landing gear and cabane struts, aluminum and A.B.S. motor cow­ Engine 15-30cc Dealer inquiries ling, a huge crash-proof canopy*, 6 plans with step-by-step instructions showing Radio 4-Channel invited. the open French version and the enclosed cockpit cabins. Also showing the possib­ ilities of installing a 10cc geared engine, a 15cc and a 30cc ignition engine. IMMEDIATE DELIVERY •A ll parts are included for the canopy or open cockpit version. SVENSON MODELS 4941 Seaford Circle · Irvine. CA 92715 · (714) 552-1266 82 R/C MODEL BUILDER s— SUPER-12 STARTS REVOLUTIONS ------

Modelers who saw these specs side-by-side recently have beaten a path to their favorite dealers to take a look at SUPER-12 for themselves. Imagine, a 12-volt starter with 25% more power! And it can even be used with 24-volts to start just about anything. Ask your dealer to show you the fact sheet.

FAMOUS SULLIVAN HI-TORK STARTER SUPER HI-TORK SULLIVAN STARTER SUPER HI-TORK SULLIVAN STARTER USED WITH 12-VOLT BATTERY USEOWITH 12-VOLT BATTERY WITH 24 VOLTS (Two 12-Volt Batteries or Other Combination)

Torque...... 230 in oz Torque...... 288 in. oz. Torque...... 570 in. oz. Horsepower...... 2/5 HP Horsepower...... 1/2 HP Horsepower...... 1 HP Capability...... Starts almost any engine Capability . . . . Starts almost any engine, Capability...... Starts all engines used, Free-Turning RPM...... 4400 Including most 1/4-scale engines. including 1/4-scale, boats. Models...... HT and HTD Free-Turning RPM...... 3500 helicopters, etc. HTD has aluminum cone and pulley In­ Model...... HTD-24 Free-Turning RPM...... 7000 stead of nylon Model...... HTD-24 2/5 H orse pow e r 1/2 H o rse p o w e r 1 Full Horsepower Free-turning RPM is the RPM when starter meets no resistance When star ters are applied to a model s engine, dilterences in RPM sare less pronounced These starters are not lor use on engines with Byron reduction gear

W ARNING To All Modelers Do Not Fly Near Overhead CUV Power Lines PRODUCTS, INC. 535 DAVISVILLE ROAD · WILLOW GROVE, PA. 19090 · USA (215) 659-3900

APRIL 1981 83 happened, musta got hit by interfer­ building to deadlines (read contest ence.” Doesn’t take as much effort to fly dates) I wanted to just build a model for OPM’s (Other People Models), you the fun of building it with no other goal know. in mind. Call it therapeutic building if Anyway, if that's what they really you want. Call it getting old, I don’t enjoy, and it must be, then it’s OK by me, mind. .. just count me out of the picture is all. But With plans laid out on the bench it when the crowds thin and the lawn didn't take much time to see that the chairs quit getting set up, count me in S-Tee was too easy to build. So it was again. decided to drag out the building process This last vyeekend was one of those and dig out a few of the tricks learned real thin days, not a piece of patio from F/F and C/L modeling. Went real furniture for miles. At least as far as we crazy on it, sliced ribs forthe wing, all tail could tell. You see, there was this surfaces were built up, wing spar was ground fog, the kind that is supposed to tapered and then light balsa used to burn off shortly after sunrise. Only this replace what was cut from the spar so fog was not burning off, if anything it you can’t see what was done, lightening was getting thicker. The grass strip at holes were cut in all over, 1/64 ply was Marymoor Park, where we fly both R/C used where 1/16 was called for, bass for and C/L, is none too long; a good servo rails in place of the spruce; you get Pattern model can get in and out OK, the idea. The framed structure came out but you d o n ’t mess around any w ith long so light that of course nothing would do flares and like that, so it isn’t a big strip. but to cover it all up with Japanese tissue And the fog was thick enough that when and clear dope. standing in the middle of the strip, a Now I d o n ’t want you to g e t the wrong model overflying either end of it was not idea here, but I had hours of good times visible .. . not a shadow, a blurry trace, finishing that model. Do you remember nothing. how soft nice, light balsa is after three Yet there was among us some who coats of full-strength clear and careful dared to actually fly in the soup, and not sanding? Soft isn’t the word for it, it is just foof type models either. Bob Hatch almost a sensual experience to rub your flew a medium sizefour-channel model, hand over chunks of balsa that have somebody flew an itty-bitty bipe that been carved and then sanded into proved to disappear in the fog better flowing compound curves, all sealed up than anything else that day, along with w ith prelim inary coats of clear. OK. so proving that the pilot could fly eyes off, the S-Tee doesn’t have a bunch of if not hands off. compound curves, but I did cowl in the Anyway, what I actually started to tell TD .049, and spent as much time getting you about was a model that I had out. it just perf as I ever did on a Rat. ing from a lawn chair. I don’t know what Ended up not flying that particular one Then covering the model was another it is like in your area, but around here, as it was not trim m ed and I figured by experience. Had forgotten how weak during the nice summer months at least, the tim e I got it trim m ed, assuming it was damp tissue is and I'll be danged if I a goodly percentage of the R/C guys off a little, it would be out of sight and can get the stuff to cover the way I want bring chairs and stools and have been why waste the thing on a five-second it on wingtips. Had added some tips that known to occupy them hours on end. I flight? (Besides, he brought his wading are of a shape generally easy to cover but have actually seen some of these guys pool and rubber duck, which is more it didn't seem to help much. With the pull up, get a model out, arrange all of the fun to play with! wen) tissue dry there followed many, many support equipment just so and then The model itself is just your standard coats of clear dope thinned 50/50, along spend the whole day quacking around, kick-around thing, an S-Tee from Air- with all of the sanding required. only to finally put the model and other tronics. Before building it, the last thing Went for final assembly and even stuff back in the car, never to have flown in the world I needed was a 1/2A sport there had to do it the old way, dressing a lick. In between, they sometimes get model, know what I mean? out the building time. Sewn hinges. Ever up long enough to set somebody else's But what I did need was something use those things? (We used to, but had needle too lean, bend an antenna or simple to build.Somethingthat wouldn't trouble counting to 8. wen) Neat, really two, possibly even get real amibitous take any real work or thought. Some­ neat. Light as can be, very free in action and thwack in some new guys model for thing to sit dow n and sand fo r an hour or and all those little holes for the thread him ... “Gee kid, I don’t know what so before going to bed. After years of lined up straight as an arrow down the HERE'S A SNEAKY TREAT! Buy a rubber-powered submarine for your youngster and also get a winder for indoor models! You'll be able to teach (learn?) the art of stretch-winding and enjoy trimming the sub for straight or circular, surface or under­ water runs of up to 45 seconds duration. It's like flying in slow motion . . . under water. (And when the indoor flying sessions come along, you can borrow the winder for your Easy B. Peanut Scale, or whatever. WIND A SUB START A MODELER WINDER, INSTRUCTIONS, & SUBMERGED EXTRA MOTOR INCLUDED. RUNS SURFACED PLUS 50« STRAIGHT or CIRCLES $9?5 POSTAGE GAYLORD PLASTICS Inc. Dealer inquiries invited. 1643 - 19th St., Santa Monica, CA 90404 (213) 829-3621

84 R/C MODEL BUILDER WE, THE PEOPLE OF THE / UNITED STATES* IN ORDER TO I FORM AMORE PERFECT

DEALER INQUIRIES INVITED

REVOLUTIONARY SUPER GLUE SUPER STRONG . . . SUPER FAST. . . ADHESIVE SUPER CLEAN AND EASY TO USE! DIVISION The precision adhesive for PACER TECHNOLOGY & RESEARCH • Modelers · RC Automobiles 1600 Dell Avenue • RC Aircraft · Miniatures Campbell, California 95008 • RC Boats · Hobbies (408) 379-9701 G et re v o lu tio n a ry SUPER ZAP a t y o u r ho b b y d ea le rs. leading and trailing edges of the surfaces. long before I’m right back in the flow that in the Flying Aces article, page 94,1 Finally assembled and ready to fly it and goin’ for it. But this past month I say it should balance about a 1/2-inch looks terrific, all orange tissue with some relearned what it can and should be all behind the main spar o f the front wing. black tissue trim doped on in various about at least once in awhile. Give it a try Perhaps an arrow upward against lower places. Say what you want about plastic yourself, next time you feel the flow surface of the wing in the side view film finishes, I like them too, but for pulling you under. (And you know could convey this information on the satisfaction, as well as really light weight, what? The hobby is a lot less expensive drawing for the benefit of others. (It has the good 'ol tissue and dope act just when enjoyed this way. wen) · been done, wen) can’t be beat. Ken, along with his delightful wife, Now the point of all this is that quite visited R/CMB’s office recently, and often all of us get so caught up in the F le a ...... Continued from page 39 brought the original Flea w ith him. We rush that it is very difficult to step aside B. In this configuration, and with actually held it in our hands, after seeing and let things just go by for awhile. In my registration C-ADMH, the real POU was it for the first time in that Flying Aces case, I have spent years in the rushing all silver, with registration lettering in magazine, 44 years ago! It was an in ­ flow of contests, going faster, turning the style shown, in black outlines only. describable experience... · tighter and so on. So fast was the flow Rudder lettering was black. In its origi­ that I had almost forgotten why I got nal configuration as built by Appleby, involved in modeling in the first place. I and before Abbott-Baynes restyled the got involved just like you did, I wanted nose and extended the forward wing­ to build a flying thing. That it would fly span, the fuselage was dark, with letter­ was almost assumed, that I could actually ing light and outlined, as it appears in control it was a chance w orth taking; the photos of my models. In coloring my im portant thing was just to build it. model red* and putting red scallops on Regardless of how well it flew or how the rudder, I apparently chose to go the big a hole I managed to make when route of artistic license for my model Model Sailplane flying it, the next model was built, not rather than adhere strictly to the proto­ Parts & Accessories necessarily to construct a superior flying type scheme. '(The fuselage, and rudder machine, just to build another, even if scallops, also the wing registration Available From very ordinary. lettering, are red; the surfaces are silver, Before long it was on to contests and on my model.) W I L S H I R E then building took a different line. C. At the Flightmasters Meet at Mile Unnecessary structure was eliminated, Square on December 7, 1980, someone MODEL CENTER faster building techniques were used, was introduced to me as planning to 3006 Wilshire Blvd. for Combat flying dispos-a-models were build a R/C Pou from a blowup of my cranked out by the dozens, and tissue drawing. He asked where the CG should Santa Monica and silk coverings were out of the be; it was not shown on the drawing. I CA 90403 question. told him he would have to find the (213) 828>9362 Nothing wrongwith that, won’t be too proper place by experiment. Now / find APRIL 1981 85 “ RIDGE RAT" - $44.95 "PARAGON" - $79.95 49“ span Slope Sailplane PIERCE 118" span Thermal Soarer Area · 436 sq. in., Wt. · 32 02. 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 Rhone (213) 349-4758 mobile manufacturers were invited to Leo Opdkye, cover book reviews, mu­ Hannan...... Continued from page 50 review the vehicle, only the Japanese seums, wants and disposals, plus the driven by a ducted fan and incorporat­ ave sent representatives to view and activities of reproduction builders in ing many aeronautically inspired con­ photograph it. many parts of the world. If your interests cepts. Constructed from aluminum and WORLD WAR 1 AEROPLANES include the pioneer era aircraft you fiberglass, the two-door car is powered The October issue of this enthusiats should have this! W hy not risk $2.50 for a by a 1,000 cc air-cooled Kawasaki m o to r­ publication should be of particular look-see, and tell ’em R/C Model Builder cycle engine for primary use, but will interest to historically minded model sent you? WW-1 Aero, 15 Cresent Road, also have a small electric motor for builders, since it deals with the remark­ Poughkeepsie, NY 12601. urban driving. able "Dem oiselle” series of Santos- THE SKY IS FALLING, Aircraft design practice is clearly Dumont ultralights. Included is compre­ CHICKEN LITTLE evident in the lines of the body which is hensive text, scale drawings, details and Abstracted from Helen Darvassy’s unusually sleek and clean, with tightly beautiful perspective drawings ... all by colum n in Popular Rotorcraft Flying was shrouded wheels and a fully-faired co-Editor Wally Batter, of Canada. Ac­ this bit of nostalgia from old-timer Bud underside. Reminiscent of Bede's air­ companying photographs show varia­ Swanson: ” ... I think I was about planes are the NASA inlet ducts on each tions, spin-offs, reproductions, and fifteen, I had been building model side. model Demoiselles. Other departments airplanes with fair success, with rubber Although Detroit and foreign auto of World War 1 Aeroplanes, edited by power. I had just finished a particularly difficult, long-flying model, and took it out in the back yard at my grand­ THE mother's place to launch on its maiden flight. She raised Plymouth Rock HEAD LOCK "NEW STANDARD" chickens and they were out in the back yard feeding. I wound up the propeller FOR GLOW PLUG and pitched it into the air. It swooped K III low over the chickens and then settled CONNECTORS into a large circle about two feet alti­ CHECK THESE FEATURES tude. The old Plymouth Rock rooster US PAT 4721452 took after it and chased it as fast as he 1.Push, tw ist, its locked on. could run. He was gaining on it, and I Still $2.95 2 . Push, twist, its off. 3.Will not was gaining on him , but alas, he jum ped up and caught it in m id-air. W ith his ot your favorite eome off' even under heavT hobby dealer engine vibration. 4. Will not wings and spurs he reduced it to junk in seconds. If it hadn’t been such a tragedy short out· 5. Positive spring to me at the time, it would have been contact. 6. 30 inch lead wire. com ical.” PONDER THIS BOX 314 Pompton Plains, N .J .07444 MODEL PRODUCTS CORP. “ We are today at a cross-roads, where serious and thoughtful men are threat­ ening us with a total breakdown of two more classics ‘ SEE YOUR LOCAL HOBBY DEALER· civilization as we know it.” Sound from Flyline 1 send 2 5 1·' foi catalog familiar? Perhaps, but this particular quotation, by Edward P. Warner, was published in AVIATION magazine for IT'S HERE!! Novem ber, 1931! GOODIES DEPARTMENT single channel Lots of new items for 1981 have arrived >15.95 here at the Hangar including the or follow ing: QUAKER • Captain Ed Toner, of Buzzer Model .049 Power" free "'g h t \ F L A S H Airplane Co. has released plans for a reduced size version of Leon Shulman’s 1941 BANSHEE free flight m odel, spe­ FLYLINE MODELS, INC. cially adapted to the new “ Turbotank” 7820OORR AVENUE iB-tO C02 engine. A stamped, addressed Farman Moustique FAIRFAX VIRGINIA 2203: 1703)5/3-2038 envelope sent to Buzzer, P.O. Box 124, Howell, NJ 00731 will bring you details 86 R/C MODEL BUILDER about both the plan and the engine. • Hobby Hideaway, RR2, Box 19, W REPLICA OLD TIMERS partial kits Delavan, Illinois 61734, offers a com ­ FREE FLICHT OR RUDDER ONLY R/C .020 CAS OR ELECTRIC POWERED bined catalog and model diesel engine FU LL K IT S handbook fo r $3.50 postpaid. The cata­ THE QUAKER»,

log portion depicts a large variety of From 1936: merchandise, such as Aeromodeller The FLYlNC QUAKER 89" Span--$21.50 plans, imported flying model kits, aero From 1937: G o ld b e rg 's 1910 S ailplane The QUAKER FLASH them e T-shirts, vintage 1954 solid model 6:13 Scale, 36" Span 9 67" Span--$17.50 and plastic kits, clocks, and kits for VERY 619.95 Additional .020$: 30" Buzzard Bombshell. $11.95; Both are Rib. Tip. Tnd Former Partial Kits. They young (4 to 7 years age) modelers. 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. $19.95 Construction Plans (« Megow’s Plan), and Extens­ Model diesel engines are the specialty 36" Mercury. $13.95. 30.5“ Ranger. $13.95. 36" ive Building Notes. For Free Flight or R/C. they of the house at Hobby Hideaway, in­ Super Buccaneer. $19.95. 30" Request. $12.95; both meet all SAM FF and R/C requirements. cluding numerous types and sizes. The 35" Twin Cyclone. $12.95, 36" Cavalier. $13.95. "SERIES 50" OLD TIMER SO" WINGSPAN handbook section of the publication The 'LONG CABIN’ 78" Span Classic Cabin. Plan Included. includes line drawings and a thorough POWERHOUSE. $39.95 1937 $20.00 discussion of the genre. Among the .09 TO .15 3 CHANNEL R C advantages claimed are: economy of ™ 3m & K m μ » operation, simplicity (no ignition or 8044 Legion Plac·. No 6. Midway City. Ca 92655 battery required), and ability to swing larger diameter props than equivalent real stars, however, are the aircraft. Two- not fuselage usage!) is far-flung geo­ size glow engines. And, unlike their winger aficionados will appreciate the graphically, yet close-knit philosophi­ automotive counterparts which general­ beautifully filmed aerobatic sequences, cally. Or, to put it more simply, model ly sound like a jar full of loose marbles, and glider-guiders are bound to be builders seem to share common inter­ model diesel engines tend to be quieter impressed with the lyrical formation ests and concerns regardless of their in operation. They do, though, require flying. And even with a smattering of location in the world. Our grateful understanding, and this handbook pro­ Hollywood hokum, the story itself is thanks to every one of you who took the vides the needed information in easy- more than a little heartwarming. Put time to send letters, clippings, cards, to-understand form. away your nitpicker’s glasses and simply comments, corrections, and yes, even • Peck-Polymers has three additions enjoy! your chidings. And to Bill Northrop and to its extensive line of model kits, LOOKING BACK the staff at RCMB, thank you for per­ supplies and accessories: First is a Lacey It is customary during a change of mitting such freedom of expression. All M-10 Peanut Scale kit designed by years to reflect upon the passage of time. of you combined are the real producers famed British builder Butch Hadland. Here at the Hangar we feel fortunate for of this column. Included in our sample was top quality another good year, thanks to so many SIGN OFF printwood and strip wood, detailed enthusiastic contributors and respon­ During a recent contest, Flightmaster plans and instructions (with proof-of- sive readers. Our alert band of Carl Hatrak was brandishing a Blimp scale 3-view and photos of the full-size "stringers” (in the reporters’ vernacular, Pilot’s License. Noted on it wassuccess- aircraft), tissue, decals, rubber, plastic prop, and accessories. Peck is also marketing a 5 to 1 ratio TELCO Turbotank 3000, .0036 cu. in. CO2 rubber motor winder with a durable One hundred in stock for immediate delivery. nylon case, anti-reverse mechanism (removable), and instructions for use. This compact, low-cost tool is a natural for use w ith small rubber-driven models. Finally, the SHARPY sharpening/ honing unit, which has been out of production for quite some time, is again available. Suitable for use w ith almost any sort of blade (including our favorite Uber Skiver!) the Sharpy can pay for itself in short order. One dollar will .0162 cu. in. CO 2 bring you the Peck-Polymer catalog packed with information about these The MODE LA C02 ENGINE - and other offerings in its diversified Suitable for models up to 36" span. range. As usual, we appreciate your Complete with 7" propeller, charger mentioning where you read about these unit etc., plus spares and accessories new products. REALLY BIG SHEW! We thought the largest displays of models took place in this country, but evidently not. According to Benno Sabel of West Germany, a club sponsored event there incorporated approximately a THOUSAND models (aircraft, autos and ships). Sizes range from subminia­ ture through a giant R/C Hercules trans­ port, and the appreciative audience Enclose payment for amounted to some 30,000 visitors. immediate delivery. TV FARE In case you missed the initial screen­ ing of SKYWARD, try to catch it on BUZZER Model Airplane Co. Capacity: rerun. Starring Bette Davis, Suzy Gil- P.O. Box 124 °-27cc strap, Howard Hesseman and Marion Howell, New Jersey "7771 m ig h t with Ross, this movie was directed by Ron Ph. (201) 363-0845 Howard, of “ Happy Days” fame. The APRIL 1981 87 model is of 13 inch span, 13 feet, or 30 feet. If you are satisfied with building som ething w ith two or three sets of wings, painting circles or crosses on them all and calling it a WW-I model, then all this is unnecessary for your work. But if you want a model that stands right, looks right, as well as flies right, then there are a lot of things you can do to make sure you don't end up with photos like mine of my Bristol Fighter. And if you want to think of an even larger project . . . well, nobody has built W-1 . . . $59.00 W-2 . . . $129.00 a reproduction Gotha yet (but there is a reproduction Vickers Vimy, and two • Custom R/C design for all boat sizes »Power - 40 in. Ibs. »Travel projected AEG heavy bom bers!). Start time - 5 seconds »Voltage - 4.8-6 (W-1) »Size -2x2x5 inches. with a Peanut Gotha, and work up. . . Some sources of interest to readers of The Probar W-1 is mechanically operated by a separate, neutralizing this article: servo. The Probar Propo W -2 is designed to plug directly into the receiver, 1. Experimental Aircraft Association, and requires no extra batteries. Specify Kraft, Futaba. or no connector. Box 229, Hales Corners, W l 53130 (puts Both winches are fully assembled and tested, ready to install. A ll mounting out Sport Aviation and sponsors activi­ hardware, switch pushrod (W-1 only), and winch arm blank are supplied. ties of all kinds for homebuilders and STAINLESS STEEL HARDWARE: MISCELLANEOUS ITEMS: designers. . . lobbies for private aviation Turnbucfcles. Chainplates, Goosenecks, Sheet exit guides, Bowsie, in Washington). Boom vang pivots. Pad eyes, Tangs, Rudder posts. Mast head 2. American Aviation Historical Asso­ Deck cleats. Boom cleats. Rigging wire, fitting. Dacron sheet line. ciation, Box 99, Garden Grove, CA 92642 Dteler inquirm inthfd. (puts out a journal on all aspects of PROBAR DESIGN P.O. BOX 639 ESCONDIDO, CA. 92025 American aviation, its times, places, people, and machines). ful completion of such requirements as instance. The sky, in every sense of the 3. Cross & Cockade, 10443 S. Mem­ gas-bag filling, instrument instruction, word, is clearly the limit! phis Ave., W hittier, CA 90604 (puts out a etc. Quite an achievement and a rare As models become bigger . . . Mon­ journal on all aspects of WW-I aviation, distinction these days. O r so we thought ster Scale, quarter-scale, one-third scale frequently including invaluable data on . . . until it was noticed that the “ official- . . . they approach the full scale repro­ specific aircraft and types of aircraft; looking'' docum ent was authorized by ductions in size, complexity, design includes a regular section ("Aerodrome General Helium von Dirigible, Com­ considerations . . . and in cost. (And Modeler” ) on markings of particular mander of the B.F. Goodrich Blimp some builders prefer to build their flying aircraft and particular squadrons). Brigade! (Aha! Did you see our com­ reproductions only part-scale, for rea­ 4. Cross and Cockade, 31 Holly Rd., ments beginning on page 11 of the sons of engine availability, size of gar­ Cove, Farnborough, Hants, UK (the lu ly 1980 issue about Goodrich Blimps? age, or cost of construction; there are British equivalent, usually with more wen) · 5/8 and 4/5 scale SE5s and Nieuports emphasis on the aircraft themselves than flying now, and a fine half-scale Jenny is the American version provides). in the EAA Musuem.) But not only the 5. World War I Aeroplanes, 15 Cres­ 1 2 "-fo o t...... Continued from page 27 biggest ones approach the Real Thing; cent Rd., Poughkeepsie, NY 12601 (a construction . . . and some 700 original some of the current crop of Peanut Scale service organization and journal meant aircraft, mostly in museums. Thecurrent and 1/2A models show the same loving for builders and restorers of all early list of available working drawings runs to attention to design and construction aircraft, and scale model builders of five double-column pages, and the and scale proportion that is required for these machines). · current Wants and Disposals list shows the bigger ones . . . and World War I three Fokker Triplanes for sale, along Aeroplanes provides material for the R/C Scale .... Continued from page 25 with three 80 hp LeRhones and a 180 hp detail. . . and museum-scale modeler as Mercedes, among much else. And a well as the reproduction-builder and most importantly, since they were not recent issue o f WW-I Aeroplanes had an restorer. recognized in the scientific community, article on builders of w orking reproduc­ The first question is: how important to where would they ever come up with tion model engines of the period ... a you is accuracy of scale, proportion, and permission to conduct experiments with little Gnome and a little Anzani, for balance? It makes no difference if the human subjects?” Meloan's conclusion asks, "H o w many W right brothers of the next decades will decidetosimply repair Do you know that almost bicycles?” any modern glow engine I recognize that the hobby/sport we can be converted to ignit­ participate in does not, at present, have ion R/C operation? We to labor under the weight of govern­ stock many sizes by d iffe r­ mental regulations. Indeed, following ent manufacturers, conver­ the safety scare perpetrated by several ted to ignition and availa­ sources some years ago, the FAA ap­ ble for immediate delivery. peared quite willing to simply suggest through the voice of the AMA, some We also can convert your "benign" regulations concerning our favorite engine to ignition. flying. In addition, of course, most All Work guaranteed to metropolitan areas live with noise regu­ meet your satisfaction. lations. but serious, penetrating regula­ Complete line of ignition tions have not been developed. I am accessories stocked at all assuming that the bulk of you out there times. will not be beating down the doors of government to suggest some. 17119 S. HARVARD BLVD. GARDENA, CA 90247 77 PRODUCTS There is another area whic h many of

88 R/C MODEL BUILDER K.P.SERVO ARMS. Longer and K.P. SHOCK ABSORBING SERVO stronger than stock units. For 1/8- A R M . SASA-7 (Fits S6, S7, S23, or scale cars, also 1/12-scale off-road any servo with 4.5mm[.1 77"] square cars. Fits S24, S7, or servos w ith drive. SASA-B (For Bantam Midget 4.5mm(.177") square drive. or any servo w ith 4.5m m (.1 7 7 "] $1 .0 0 each square drive. SASA-20 (Fits S-20 K.P. TIRE HORNS. Tool K.P. BALL FLAGS. Fuel- or any servo with 4mm [.1575"] is just like factories use to proof plastic, 1-3/4" dia. mount tire doughnuts on KIMBROUGH square drive. Snaps on top section of wheels. Complete with $2 .00 each transmitter antenna. High­ gluing and truing instruct­ PRODUCTS ly visible. All colors for 27. ions. 53, and 72mHz. 1.4" dia. (1/12) - S1.75 $ 1 .0 0 each 2.ff' dia. (1/8) - S2.50 1430 E. St. Andrews Place, Unit E, Dealer and distributor in­ quiries invited. Santa Ana, California 92705 Phone (714) 557-4530 us fail lo consider or al least to lake mind. Modelers, especially scale m odel­ \ seriously. Those of us in the over-40 ers. are notorious improvisors. They category can remember the days when prowl here and there gathering dodads most everyone assumed some degree of and thingamabobs which ultimately responsibility for their actions. This wind up on a model. In addition, they included both the "actionee" and the alter things to serve their purpose, "actioner.'' If you fell on your neigh­ sometimes to the extent that the manu­ bor's property he offered his sympathy facturer. if he knows about it. must cry and perhaps more and you scolded himself to sleep. The modeler also 13 in. NAMUT yourself for being a klutz if it was your generates his own parts with file and drill 11 LACEY fault. Now. of course, you sue for 200 and hammer and. . . . These, too. wind M-rO 11 PEANUT KITS $4.05 EACH thou and possibly collect because your up somewhere on the model in a Wright LACEY M-10 COUGAR P1ETENPOL GIPSY MOTH neighbor's petunia bed constituted an Brothers fashion. PIPER CUB GANAGOBIE ' attractive nuisance." When he is through he has created a ANDRESON COMPUTE CATALOG S1.00 Manufacturers in our hobby line have model that he assumes will fly because HARO TO FIND ACCESSORIES. KITS AND become painfully aware of the fact that the real one did. But he often will admit PLANS FOR RUBBER POWERED MODELS producing a product which can be used that more than a little guessing went into P. O. BOX 2406 .MB Peck-Po/ymers LA MESA. CAUF. 62041 safely does not mean that he will be construction techniques, materials. CG PHONE (714)460-6675 or (714)442-4636 y protected if someone ignores published locations, airfoils, etc. Is he in a critical guidelines and comm on sense and does position if something goes wrong and he toxic and dangerous unless used with not use it safely. His liability seems to go is forced to admit that a small dash of special respiratory equipment. Incident- far beyond product control and notifica­ W right and barnstormer went into his ly, a paint store offered to sell me some tion. creation? of it long before I knew of any possible The modeler often does not realize W ell not even begin to get into the problems that I might encounter. that his share of responsibility is as great area that has been written about recent­ I’m certain that by now you must feel or greater. Certainly spraying a little ly concerning m odeler use of materials that Mom Underwood must surely have exhaust on the spectator's clothing will that require special practices or equip­ raised a worrier. You may well be generally be treated with humor, but ment far beyond the average modelers correct, however, I sincerely hope that spraying prop blades into the area is capabilities. Types of paint mentioned in you will agree that we must exercise quite another matter. This writer is these articles are those that are highly caution 3nd concern, for most assuredly. profoundly concerned over the direc­ tion that courts and regulatory agencies have gone in recent years. Generally, we feel that carrying insurance, being MOVING TO SOUTHERN CALIFORNIA? reasonably careful, and assuming that it will happen to the other guy. seems MAKE SURE YOU GET A HOME adequate, since after all. this is a hobby WITH A MODEL WORKSHOP ! ! and we are in it primarily for a pleasure motive or to release creative talents. We FOR ALL YOUR REAL ESTATE NEEDS, have little desire to load ourselves down CONTACT: with ponderous sets of this and that ANITA NORTHROP making the hobby a regulatory night­ mare. By and large we are responsible beings and are willing to accept the MLS consequences of our actions NORTHROP Living by a few simple rules and operating our equipment in a manner m that was intended by the manufacturer is Rea / Estate me. a responsible approach, but a little nagging thought keeps creeping into mv 621 West 19th St., Costa Mesa, California 92627 (714) 642-5062

APRIL 1981 89 0 2 0 -.0 4 9 These Competition Models $ 17.50 are now R/C V* RAVAN MODEL PRODUCTS EINDECKER $ 10.50 3 5 " SPAN 45" LONG 2-CH. A LL B A LS A B-70 ALL BALSA R/C $9.50 SPORT F/F .020-.049 F/F ALL BALSA 2-CH. R/C $21.50 86" SPAN $ 1 5 .5 0 ALL HARDWARE TAUBE

ADD $2.50 SHIPPING . j » ' a ------CALIF. RESIDENTS ADD 6% SALES TAX R A V A N MODEL PRODUCTS P.O. BOX 59513 NORWALK, CA 90650

cursory external going over, but the using). Fit it into the opening tightly, insides as well. What a splendid idea. letting enough hang out that you can GLASS CLOTH The last consideration then, is to sand it into the curved com pound shape adequately protect yourself as much as you desire. Pull the plug and reach for • 0.6 02., FINEST WOVEN QUALITY possible from the peculiarities of the the fiberglass materials. If you wish to • 5 YD. & 10 YD. LENGTHS 38" WIDE court, and in like manner, minimize retain the plug for future use w'rap it in • WORKSWITH EPOXY OR regulations from infringing upon your Saran W rap and lay the glass cloth over POLYESTER RESINS • USED & ACCLAIMED BY MODELERS activities. Hopefully you will not be that. Be careful to make certain that the IN THE U.S., CANADA. SWEDEN. required to take on the responsibilities cloth is laying flat against the plug. Let NEW ZEALAND. AUSTRALIA that should be assigned to other indi­ the several layers harden, trim and • FAST DELIVERY viduals. When a spectator wanders into hinge. If you do not wish to save the • 1st. CLASS POSTAGE PD. IN U.S. • 5 YDS. $16.65 - 10 YDS. $29.70 the area on your side of the safety line plug, just lay the cloth right over the and is injured, or parks his car in the Check or Money Order foam. After it hardens, sand or cut away Overseas by Airmail, add $2.00 forbidden zones, remember, you may the foam and you are home free. This R/C CONSULTANTS be required to bear the brunt of his tends to give you a somewhat more failure to follow the rules. Was it just flexible door, since the resin soaks into 11809 Fulmer, N.E. three years ago that a young man was the foam and causes it to cling to the Albuquerque, N.M. 87111 paralyzed after diving into the shallow cloth. DAN PARSONS Ph. (505) 296-2353 end of a motel swimming pool? As I Fitting spinners seems to cause some if we don't, someone else will. Model­ understand it, he ignored a locked gate people problems at times. Once I get the ing. again especially scale modeling, has in the fence (he climbed over it). He front end about right as far as length is been lifted well beyond the "toy” stage. ignored the sign saying "no swimming concerned (even with the rear thrust Granted, many persons outside the after 10 p.m ." (it was after). He ignored washer on the engine) I cut or sand off hobby still view it that way. In all candor, the marking that said, "Shallow End.” He 3/16 to 1/4 inch more. I then prepare maybe it's just as well at times that some did collect one very large sum of money 1/8-inch plywood ring and several do view it that way. Historically, toysand from the motel. spacers (1/16,1/32, etc.). Some epoxy is the activities engendered by them seem ODDS AND ENDS placed on the 1/8-inch ring and it is to present little threat to anyone. It does And you say you need some gear placed up against the cowling. The behoove us to act in a responsible, doors for your latest Widget 10 and you spacer rings are slipped on and finally mature manner in all phases of our are having a rough time matching the the spinner backplate. Make certain that hobby/sport. This includes not only the curve of the wing or nacelle? Tell you it seats firm ly against the knurled engine flying but building and maintenance as what to do! Take out the gear and cut thrust washer. Put on a prop and sit back well. Our good friend, Steve Sauger. yourself a block of sandable foam to fit and wait until the epoxy sets up. spoke of a contest last year that required the opening (that's not the beaded stuff Remove the nut, prop, and spacers, each model to be safety checked before but rather the beige colored material and see how nicely the 1/8-inch ply­ the competition began. Not just the that many home builders are currently wood ring is glued to the cowling. It’s entirely possible that if you sanded accurately, the gap around the spinner TREAT YOURSELF TO A backplate is even. But just in case, that’s why I cut away a little extra at the CUSTOM BUILT beginning. Next I cut and glue a piece of Telephone: 1/16 or 3/32 balsa to the plywood ring. TIPORARE Then I take a piece of 1/32 plywood and by DICK HANSON a piece of sandpaper and contact cement Our custom built airframes are used them to the back of the spinner back­ by many of the country’s top pattern fliers. For example, we furnished plate, with the sandpaper facing rear­ basic components for 1/6 of the mod­ ward. By placing them over the shaft I els flown In the 1979 Masters Tourn­ rotate them, removing the balsa material ament. Some were TIPORARES, some were not. from the ring. When you are close to the Building pattern birds Is a business proper gap put the prop on and pull it w ith us, not a sideline. We can save through until it rotates freely. Remove you considerable building time by providing you with good, basic the plywood and sandpaper and you’ll NEW , 8 2 5 sq. in. TIPO construction. find that you have a nice even spacing AVAILABLE NOW II Write or call us concerning your between the backplate and the cowling. requirements. We w ill be happy to 5269 Ludty Clover La. review them with you and quote FAI NOTES Murray, Utah 84107 prices and delivery. The United States was once again

90 R/C MODEL BUILDER represented at the FAI C IA M meetings in Paris (or scale concerns by Bob Wischer. In a letter to me, Bob men­ J YES-SIR, YES-SIR. THREE BAOS FU LL! V~ tioned that not a whole lot of impor­ tance happened. There are several items £ γ η β/^, fVo AJ that need to be mentioned, however. The only country to put in a bid for the 1982 Scale W orld Championships was the USSR. They listed possible sites as Kiev for the primary site and as Bob relates, "A couple of unpronouncable 3ΛΛΠΕ. HUn&ER. or Ρ λ / c Æ ! names in the Black Sea area." as other WALT MOONEY NOW OFFERS 4-BAGS OF PEANUT SCALE PLANS choices. It is a kind of good news/bad ALL WELL TESTED OESlGNS, AT ONLY *5.00 EACH news type of situation, however. The EACH BAG FEATURES FOURTEEN PEANUT PLANS, good news is that they would hold control line championships and evi­ ONE OTHER, PLUS PHOTOS AND INFORMATION dently have at least seven countries that SEND tl.0 0 FOR COMPLETE LISTING AND SAMPLE PLAN TO: would participate. Probably many of WALT MOONEY, 2912 CABRILLO MESA DR these would be so-called Iron Curtain countries. This is, of course, great news SAN DIEGO, CALIFORNIA 92123 to those control liners who have re­ ceived short shrift in the last two cham­ many, and Vienna, Austria begins. pionships. The bad news is that Russia Daughter No. Two, Cathy, looks'toward * STOP-A-PROP Engine Brakes# 1/2A-A (TD) Brake Kit No.10 1 ...... $2.75 w ould not hold Stand-Off scale. There is graduation in ’82 and tries to figure out FAI (AB) Brake Kit No.10 2 ...... $3.25 evidently a lack of interest in Stand-Off what to do the rest of her life that will B-C Brake Kit No.10 3 ...... $3.75 1 of each size - $8.50 3 of FAI size · $8.50 in those Curtain countries. This is a blow involve animals. If Rae and I seem a little Adaptor for Cox .15, Kit No. 107...... $1.50 to the World Championship status of preoccupied for a year or so please be (Used with Kit No. 102) Pennsylvania Residents add 5% Sales Tax that event, since it was doing so well in patient, we’ll get back to normal. Back to K & W ENTERPRISES. 7824 Lexington Ave. stimulating scale interest. the balsa jungle. ______Philadelphia, Penna. 19152______The Scale Sub-committee chairm an­ One to One. Bob. · his w ife the radio should he be lucky ship changed hands from Helmut Zieg­ enough to win it. Well, Ed won the ler to Dennis Thumpston, of Great system, so R/CM B gave her a Sig M ark II I.M.S...... Continued from page 15 Britain. There were some minor rules Kadet kit that we had earmarked for a changes, such as not having to stand in Astro Flight, pioneers in silent flight, product review. This way, Ed and Mary the center of the circle during the Figure w ith its many quality items for electrified Ann will have a kit to build, and we will Eight, the addition of the Chandelle as a flight; mini-starters, power panels, have a product review.. . not a bad deal. maneuver for non-aerobatic types, and motors, etc., were kept busy answering Parker planes had its big Cessna and an additional three minutes of air time questions, due in fact somewhat, to the Sorcerer on display. The 92-inch wing­ for non-aerobatic types. electric powered, R/C scale models span Sorcerer, an inverted gull-wing, Other discussion centered around flying quietly over booths and specta­ twin-boom inverted “ V” tailed, electric- items relating to the changing of the tors alike. .. Quiet flight is growing. powered soaring machine (whew!) model between the static judging and Bob Holman Plans was a busy booth, reputedly had $40 worth of Monokote flying. A proposal will probably be with the scale types looking through on it! Are you listening, Sid? submitted for 1981 designed to help Bob’s listing of plans and scale drawings, Al Novotnik, spokesperson for MAN, monitor this problem. Once again, a eyeballing the Complete-a-Pac kits like escaped from Connecticut lor several proposal to increase the single engine bees around honey. If it’s scale info, Bob days to report on West Coast m odeling lim it to 15cc was defeated. Bob suggests. has it or has access to it. Across from Bob activities, he says.. . "W e’ll just have to keep trying." was Air Capital Models, J.T. Finley John Simone, Jr. and sister Kathy SOME PERSONAL NOTES presiding (this man can boogie!), and Davis, at American R/C Helicopters, had Christmas season has passed and Santa very busy with his F.B. 100 ready-to-fly a very nice display of rotary winged craft. was good to the Underwood clan. Some planes. Nicely built, painted, and ready The .40 powered "Mantis” looked espe­ of the items removed by "persons for radio and engine. (Ours is ready to fly cially good (and only $149!). A lot of unknown," that I alluded to in a recent and review shortly.) interest in their impressive line. Windsor issue, were replaced. The senior U nder­ Tower Hobbies came to California Propeller Co. had its assortment of woods motored off to Florida to wait out with catalogs, to meet modelers, and nylon/glass composite props on display, any Midwest w inter problems. Eldest that they did. Ed Devlin, a local modeler, but Fred Jamieson seemed more intent daughter. Anne, headed back to her first was the lucky winner in the Tower on producing quantities of balsa strips year of college in Iowa, and eagerly Hobbies free raffle for a new Tower w ith his new balsa stripper. It was well awaits August '81. when a grand adven­ Hobbies 6-channel system. However, designed to strip an infinite variety of ture with 11 months of school in Ger­ before the drawing, he agreed to give stick sizes. “HOT STUFF” WORLD CLASS ADHESIVES FOR EVERY MODELER 1/4 oz. $2.25 V2 oz. $3.95 2 oz. $12.00 (saves 24 to 33%) ORIGINAL GAP FILLING HOT STUFF OR SUPER ‘T5 AVAILABLE IN THE BEST HOBBY SHOPS WORLDWIDE P.O. BOX 836, SIMI, CA 93062 · (805) 522-0062

APRIL 1981 91 off the Gentle Lady, and in their spare u time, were building neat things with Jet H o b b y and Super Jet. hohb iptuahiti λ. A relative newcomer to the hobby OLD T1MEH KITS. (Full and Partial Kits) BOATS industry, and new to the show, was T y ro M o d e l S u p p ly - -F u ll K its --R /C o r FF Circus Hobbies. Certainly not new to the NEW Bay Ridge Mike'. 48*" 04* .09 (*A K/C)$28.9S ARE OUR BUSINESS 1941 Playboy Sr.. 80". Pylon . l*- .35 $44.96 FIBREGLASS HULLS, KITS hobby was Jerry Nelson, heading up this 4K'e Models- -Full Klts--Gas and Rubber division of the Circus-Circus empire, 1940 B u ix a rd B o m b s h e ll. 72" .1 9 -. 35 R /C -F F $49.95 & SCALE ACCESSORIES 1939 Korda Wakefield. 44" Cabin Rubber $14.95 which imports and distributes a wide J i R M o d e ls - - . 020 Replica Free F lig h t SEND FOR OUR NEW 36 PG variety of high quality model kits, acces­ 1941 Strato Streak. 33" Full Kit $12.95 ILLUSTRATED CATALOG P l W Semi-Kits- -Rib. Tip. I Former K its sories, and the famous JR line of R/C 1940 So L o n g . 50" Λ -B C abin (P la n E x tra ) 114.50 O N L Y $2.00 (Companion Strip wood Kit for So Long--$9.58) systems. Jerry, Don Weitz, and Marty 1936 Buccaneer. 84" Cabin (Plan Extra) $21.00 (Refundable First Order) Barry informed us that they will be (Companion Stnpwood Kit for Buc--$25.96) 1938 Trenton Terror. 72" Cabin (Plan Extra) $16.50 handling distribution of the famous (Companion Stnpwood Kit for Trenton $13.72) Webra line of engines very soon. This (Plans: So Long. $3.00. Buc. $4.50. T Terr $3.50] The Midway Model Co.--Full and Partial Kits n U f f o W c should ensure better availability of Rib. Tip. 6 Former Partial Kits R/C or FF--Cut ORAWfP c engines and spare parts in the future. A 1936 F ly in g Q u a k e r. 84" C abin (P la n I n c l.) $21.50 POUT JM KHSONS'A N v 11778 1937 Quaker Flash. 67" Cabin (Plan Incl.) $17.50 T il $16 478 8700 new ARF helicopter was seen, also a 1937 Long Cabin. 78" (Plan Extra $5.00) $15.00 1/2A Mirage kit and a P-51. Watch for Replica Old Tuners - -. 020. Cas for Electric 1940 C lip p e r MK I I . 3 6". FF o r IC h R /C $14.95 C. Partridge of La Mirada, California, a the I.M. line of retracts and other acces­ 1940 Sailplane. 36". FF or 1 Ch R/C $14.95 1941 Playboy Sr.. 38". FF or 1 Ch R/C $12.95 new KP5X system. Good s h e w .. . sories in the hobby shops soon. O l d T u n e R/C--Full Kits--. JO to .15 Engines Pacesetter Products had its 1/4-scale Bob Novak and his charming wife, 1938 Pow erhouse. 5 0 ". 2-3 C h R /C $35.96 1939 Air Trails Sportster. 50". 2 3 Ch R/C $35.96 R/C sprint car on display. Shades of Jean, were on hand showing some of the BOOKS ON OLD TIMER MODELS summers gone by. fairgrounds, cotton fastest servos available anywhere. Small, A n d q u e and Old Timer Model Air Craft $10.00 Air Age Cas Models (M.A.N. Reprints) $3.95 candy. Offys and flathead V-8s! Can you lightweight flight packs, and various size FREE FLIGHT KITS. Sport and Scale imagine driving one of these dirt track­ servos, including high-power versions, Čurtiss Pusher (1Ö12) |R /N ], 28". CO 2 $8.96 Longster 111 (R /N ]. 36". .020 FF or ICh R /C$1 1.66 ers and getting sideways in the corners? highlight this line. Bob pointed out that Bell Aircobra (Easy Built). 35". Rubber $7.00 NEW Thermal Piglet. 18" HLG (DT equiped) $4.98 Lovely!! Swank Models displayed a all 24 of the top drivers at the 1980 ROAR FTOs Tiny Piglet. 13.5" HLG (Complete Kit) $3.49 Quadra-powered, jet drive boat capable nationals were using his equipment. If Frø» Merlin. 18" HLG (Canada Nats Winner) $4.98 EUgCTRIC SYSTEMS AND KITS of speeds of over 30 mph. No more the reliability is that good in R/C cars, Astro 020 Free Flight System (Fully Wired) $26.96 snagged props. there is little question about its use in all 1935 Miss Am enca (M id w a y ). 36" 020 FF R /C $12.95 types of aircraft. Bob, having flown a lot Shipping and Handling 50 Page CATALOGUE After pausing for refreshment, we Up ro $8.00 add $1.50. 51.00 PP (A co py w ill headed for the Sig booth, where Hazel of Formula 1 and QM, designs and $8.01 to $20.00 add $2.25. be sent free, upon $20.01 to $45.00 add $3.00. request, with an order) Sig, Maxey Hester, and the Paul John­ engineers from experience. $45.01 to $70.00 add $3.50, Hobby Horn sons had set up shop facing the demo Fly by Night M odels was next up, and over $70.00 add $4.00. P .O . Box 3004 C A . A ddressees add 61 fo r Seal B each. Ca 90740 area. Hazel had “ Perky,” her pet cocka- showing its new glider kit. Gliders, or _ Sales Tax. Send MO. CK. (714) 894 62231 Best sailplanes, and California ... as Cali­ or Visa/MC (•♦EXP.) mornings or recorder-- tiel along, and the biro was as much a hit COD Exact C h g . «$1.50 H d l. activates on 5 rings) with the crowds as the models in the fornia goes, so goes the. . .! Around the £ booth. Almost! A prototype of a .10 corner again and facing the flying arena Kraft systems was well represented, powered Fly Baby that will be released is C.B. Associates, Bob Siegelkoff pre­ with ever-smiling Danny Lutz and Ray soon appealed to many. They probably siding, with help from Chuck Fuller and Forbes, the new marketing manager. wanted the modelers to notice their new company. C.B.’s line of heavy-duty Ray was seen talking and listening to line of iron-on coverings, updated hinges, control horns, cable control many, many modelers, as were the rest trainers, and a neat 1/2A sport R/C job systems, and sprung tailwheel assem­ of the Kraft crew. Between handing out too, but quite a few were attracted to the blies for the modeler of large R/C buttons“ R/C modelers do it with Kraft,” Fly Baby. aircraft needs little introduction; in the taking entries for guessing how many Duke Fox was w ith us again, and had a future, look for a few more good things. servos in the fishbowl, and answering couple of prototype engines on display. Bob’s converted Kawasaki engines have many questions about the new SPEC­ One, a rear-exhaust ball-bearing .19 a well earned reputation for supplying TRUM series, not much time was left for looked very good, the other a quite horsepower in some of the bigger-than- viewing the playoffs on the tube in the large engine to propel your bike to hair- big birds. Also seen were some beauti­ K&B booth across the way. Would you graying speeds. .. At bike shops this fully built boats featuring Bob’s Kawis. . . believe that two lucky modelers guessed year, about $125 list. Quarter-scalers, The beautiful Stearman, with molded the exact number (573) of servos in the take note. glass fuse and tail surfaces, and wings of large glass container? Ray Forbes in ­ Carl and Beth Goldberg, almost native rib strips over foam , was the w ork of form ed us that Kraft Systems is sending Californians by now, with assistance Chuck Fuller. both Robert Crawford, of El Monte, and from Bob and Doris Rich, were showing If you make and/or modify small parts, fittings, etc., and need another vice, er, vise, Panavise has ’em. They swivel, tilt, lean; in other words, it’s adjustable. The new 90-degree clamps should be a nice addition to the work­ F L Y EL bench. We now visit w ith Sid Gates, of Royal Electronics. Doing yeoman duty, Sid had to be hoarse by Sunday after­ VL-101 Electric propulsion system noon after answering a million ques­ shown— using Hytork 48 motor and tions about his line of kits and pre-built planetary gear box, SJ-3 switch & systems. charging jack, and B-33L fast charge Bob Pettit and his new bride, Judy, ni-cad flight battery— total weight were there for the Hobbypoxy Division 2% oz.— will power models 25 to of the Pettit Paint Co. along with Don 50" wingspan weighing up to 10 oz. Anderson, showing its extensive line of Send 50c for latest catalog showing adhesives, resins, fillers, and finishing full line equipment & accessories. V L PRODUCTS epoxy enamels, and passing out color Hobby dealers send for information. Division of Vista Labs chip samples like crazy. AM A and Model 7871 Alabama Ava., No. 16 Canoe* Park, California 91304 Aviation were represented by John W orth, Earl W itt, Betty Stream. Bev 92 R/C MODEL BUILDER Wisniewski, Larry Bolich, and others, all busy disseminating information about JOHN POND the academy. Tom and Donna Runge were proudly presenting the Ace R/C line; from the Old Time Plan Service well accepted Silver Seven top-of-the- line series, which allows you to make a The largest selection o f plans in the w orld at the most really custom transmitter; to servo kits, airborne system kits, custom chargers, reasonable prices Each list $1.00 * accessories, packaged hookup w ire, and All 4 for $3.00 No. 11 OLD TIMER F/F GAS you name it, they have it. Send Ace $2 for its catalog of hard-to-find items, well No. 110L0 TIMER RUBBER/TOWUNE w orth it. No. 11 OLD TIMER FLYING SCALE A throogh K For fine scale accessories to really No. 11 OLD TIMER FLYING SCALE L throogh 2 finish out that pet scale (or non-scale) project, whether WW-1, Golden Era, •New prices effective June I, 1980 WW-II ... or if you require wheels, P.O.Box 3215 machine guns, engine parts, pilots, San Jose, Calif. 95156 whatever, the Williams Brothers, Grang­ Phone (408) 292 3382 er and Larry, have it. Also for the specialist in plastic shelf models, sub­ (personed?) by Sue and Walt Schroder. facturers’ display booths. Hopefully the jects like the Caudron racer should not Many R/C systems were raffled off along photos will help to fill in the gaps. be overlooked. with lots of kits, engines, and choppers. Possibly by next month, Mitch Poling Leisure Electronics’ Roland Boucher Total value of this year's items was will be giving a detailed account of the was showing his specialty line of elec­ almost $4,000. indoor, electric powered, R/C scale tronic goodies slanted toward the R/C C&D Enterprises, the glow driver competition that took place while the car hobbiest. M otors, car chassis, power people, had their electronic starters and show was going on. packs, and a nice digital readout auto glow drivers on display. Howard Dan- Briefly, Tony Naccarato and his moth­ charger, reading both current and forth, the “ D," was busy explaining how er, Addie Mae, teamed up to win the voltage to better than 1% accuracy are the glow driver minimizes flooded and event with an unusual biplane ... the available. Model Boat Yards’ Ray Kath- damaged engines, bruised fingers, and “ Guppy.” The full scale aircraft was ner had available for viewing various lots of censored language at the flight designed and built by the Sorrel broth­ models and kits that should provide line! The giant Spruce Goose seen in last ers, probably best known for their plenty of room for shipbuilders to month’s issue and built by the Meyers "Hyperbipe.” The team also entered a exercise their talents. George Kileen, of brothers, has eight glow drivers installed 1/4-scale Farman "Moustique,” span­ Kraft Orange County, was offering his in it to keep the plugs lit; all eight K&B ning 78 inches, yet weighing under the expertise in the area of care and feeding, 61’s being started in less than two 24-ounce maximum allowed weight for opps, repair and maintenance of the m in u te s... the competition. Although the Farman many brands of radios. As an example, Big Bert Baker, of Scale Flight Models, flew better than the Guppy, the smaller, for a nominal $10 extra, KOC will flight was showing a com pleted and a partially staggerwing bipe earned more scale test your repaired or tuned up system. framed up "about 1/5 scale" Japanese points. Very cheap insurance. Zero. The kit features molded tail cone, Incidentally for those whodon’t know RJL Industries was showing the RJL upper fuselage deck with gun troughs, the Naccaratos, they operate a very K-61 engine, formerly the Kraft .61. machined balsa and ply parts, full-size popular hobby shop in Burbank, and Good to see this excellent engine back detailed plans, and is a pussycat to fly. when we say that mother and son are a on the marketplace with parts and Bert was displaying some beautifully team, we’re not kidding. Addie Mae service available. Randy Linsalato is machined retracts, too, with detailed Naccarato is a seasoned m odeler. She planning additions to the engine line,so shock struts. Send him drawings of your actually designed and carried out most stay tuned in. "legs" for quotes. of the construction of their two models, The IMS raffle booth was ably manned This completes our tour of the manu­ while Tony’s main contribution was a

1 KIORITZ SUPER ENGINES SPECIALLY PROFESSIONAL ADAPTED Γ KIORITZ ) CHAIN FROM ECHO SAWS *2.4 CUBIC INCH KIORITZ 3.9 CUBIC INCH SUPER ENGINES 4.8 CUBIC INCH 5.6 CUBIC INCH WILL AWAKEN *Our Original Giant Scale Engine YOUR 40 LB. PLUS 3.2 to 8.5 H P. SLEEPING GIANT! 6 V(t to 8 ’/2 POUNDS

DIRECT SALES ONLY ROUSH MFG. CALL OR WRITE Box 251 Sandyville, Ohio 44671 FOR TERMS KIORITZ ENGINE INSTALLED ON Ph. (216) 866-9462 or 484-4374^ V WENDELL HOSTETLER'S SKYBOLT APRIL 1981 93 sundown. The evening air requires less ____ Flashing Navigation Lights . $24.95 incidence than early morning, resulting *TlCllTl Strobe Light...... $19.95 in a "safer" glide trim for the early morning rounds. If Bob feels like "push­ l o r 't rrt n i n Landing Li9h,s...... $39 95 ing" the glide to the ragged edge, he will E I C U L Í vyl M U Mars Rotating Beacon...... $19.95 add .005 inches of incidence to rear of Marine Navigation Lights .. $10.95 stab from his evening air trim. The U C V IU C O Maxi Electronic Throttle ... $44.95 results of all this painstaking calm air testing are consistent 5-minute flights in ’’ Mini Electronic Throttle ... $39.95 evening air .. . Bob recently did 5:29 in Electronic S w itc h e r...... $34.95 an evening air flyo ff at Taft, near sun­ down. é p jL · # ^ DI° CONTROLLED Bob doesn’t fly the same m odel all day at a contest. He usually uses the model with the calm air adjustment for only the ,.ψ * * K d m first couple of rounds. He now feels that perhaps a different type model is re­ 3(331 N KEDVALL AVE CHICAGO IL 60641 USA quired for therm al flights at Taft, w ith its ------II unavailable locally, add $1.00 lor direct order. No C.O.D______peculiar thermal patterns at different times of day. So Bob plans to build one, Bob Peck had the only other blimp perhaps 2 new Wakes this winter, speci­ entry, his new commercial product for fically for flying in the thermally part of VINTAGE R-C FLANS the model hobby. The helium bag is a the day. He will aim for more altitude in very realistic looking gray vinyl envelope the climb, perhaps 50 feet or so, to which resists puncture and extreme enable a longer period of contact with heat. Control problemsprevented better thermal air. He will go to a shorter flight results, but this blimp really looks coupled layout, to enable tighter turns like it will become a popular kit in the without spinning in, in the hopes of - I9 4 I - near future. getting them to hang into thermals REARWIN SKYRANGER And so, another season of trade shows better. Wings will be lower aspect ratio, I/4 SCALE M O DEL I7 5 has been launched. We look forward to with a 5 inch chord, to give a stronger 9 f T. WING SPAN bringing you information about new structure for flying in windy conditions. 4 LARGE PLAN SH TS.- P L A N S $ 2 0 . 0 0 products as we travel to the other shows. Bob thinks they’ve got Wakefield QUADRA OR GLO ENGINES Λ00 , „ 0 P0STAGE It w ill be interesting to see what trends props pretty well sorted out now, develop as the year progresses. · getting better performance since the CATALOG-OVER 50 PLANS 50 t DEALERS WRITE emphasis on calm air flying. He has SID MORGAN increased the diameter to 23-3/4 inches, F/F ...... Continued from page 55 I3I57 Ormond. Belleville,Mic h.4 8 III u s a w ith a little more pitch to give 30-35 sec. for most top class flyers, in early morning prop runs. Very thin blades with a steady hand on the control sticks. conditions. The recent emphasis on a 4- turbulator seem to be standard for good Our own Mitch Poling. "Electric minute max/early round flight at the performance. Props are carved from the Power" editor, entered a beautiful Finals has im proved the still air capability hardest possible balsa; Bob has tried Sopwith Tabloid, which could have of most US Wakes. Bob has concen­ carving blades from hardwood, but done much better if Mitch had had trated on this performance area for the doesn’t like their performance. The more opportunity to test it before the past 10-12 years, and had some interest­ hardwood blades end up too thin and competition. ing things to say about early morning flexible, and with not much of an airfoil. In the LTA (Lighter Than Air) event. Wakefield flying. His still-air models are Bob’s calm air trim m ing has paid off in Tony Avak, after two previous years of the same design as those he flies later in Unlimited Rubber, especially the un­ less than average success, did an excel­ the day. They're just trimmed a bit limited early morning rubber event lent job of piloting his new design different. . . the CG is farther back, with sponsored by Bob Meuser at the US F/F through the required maneuvers, failing carefully adjusted incidence and a wider Champs, which he’s won every time. only to makea mail pick-upanddelivery. glide circle. The problem to be avoided Bob is really intrigued by this type of Tony has promised us an article on some is a stall in the early round, which can be flying, says it’s the way Unlimited Rubber of the fine points and design considera­ disastrous, since the rearward CG would ought to be flown. He describes it as tions relative to model blimp construc­ not permit the stall to damp out. Bob similar to indoor flying, but done out­ tion. does his "early morning” trimming at doors. The problem with using an in-

D A T E R E C O . SOCIETY OF ANTIQUE MODELERS MEMBERSHIP APPLICATION NO . ______DO NOT WRITE IN THIS SPACE I hereby make application lor individual membership in the Society of Antique Modelers.

NAME B IR T H D A T E YEARS MODELING

ADDRESS CITY STATE ZIP

Please check if you belong to any of the following Note Membership includes 15% discount on one year MODEL BUILDER Magazine subscr<>tion. Give S. A. M. No. vtften subscribing. Δ Μ Δ NO Enclose Membership Dues of $10.00 and send to: Society of Antique Modelers M F Γ A NO. 1947 Superior Avenue Whiting, Indiana 46394 , M CHAPTER NO. In making this application for membership to the Society of Antique Modelers. I agree to abide by the rules set by the Society and realize that the goals of S. A. M. and the Old Timers movement are to encourage participation above competition and is dedicated to the preservation and reproduction of vintage model aircraft.

94 R/C MODEL BUILDER door type approach is that there is a low, FLYING SCALE MODELS thick layer of air which must be pene­ RUBBER STRIP trated before really long durations can ~ ~ r~ i— be achieved. Bob's working on getting FAI RUBBER: 4 out of 5 in the the "magic” 15 minutes in such condi­ Fly off at the 1979 World Champs tions . . . his best is 13-1/2 minutes, so u s e d FAI RUBBER. Made m U S.A. he’s getting there, although, as he says, SIZES 1/4". 3/16". 1/8". 3/32". 1/16" the more you progress, the slower it 1mm (.042") THICK. SPOOLED gets. GROSS WT. 1- 1/4 to 1-1/2 LBS The model he uses for this type flying PRICE $1250 first spool PPD in is the same size as his regular Twinfin SPARROW HAWK F9C-2 (3 < M t l ...... $11.50 1-3/4·· scale C/L, 44-1/2 " span U. S. Additional spools $12.00 each. d e sig n, b u t the aifram e is 20 grams GRUMMAN J2F-6 "DUCK" (4 sheets)...... $19.50 NEW PIRELLI lighter. He matches the 80 grams of 1-1/2" scale R/C. 58" span SIZES: 6mm, 5mm, 4mm by 1mm. model with an equal amount of rubber. VOUGH1 OS2U-1 & 3 KINGFISHER...... $19.50 This model has a longer m otor tube, (4 sheets) 13/4" scale. 63" span PRICE $15.00 first hank PPD in GRUMMAN "GUARDIAN" AF 2 S ...... $17.50 U.S. Additional spools S I4.50 each. with low aspect ratio wings. CG is (3 sheets) 1-1/4*' scale. 7 5 " span pushed quite far back, since the model A dd $1.50 handling Λ postage Sole U.S. Distributor and World Wide Brochure 50d sales. Send 2S4 fo r 1980 C A T A L O G starts zeroing out during the first part of C U | T H PI flight, before the power dies down. He 9422 N. Fairway Bhd . Sun Lakes. ΑΖ 85224 ^ F A.I. Model Supply gets a 90-second prop run from his 23- » o bo« m» ioni>»Nct c*sovo inch diameter prop, plans to go to 25 inches. With only one flight per contest, power burst effects and to provide a you don’t need much rubber . .. Bob’s long, steady climb to altitude. ANNOUNCING THE INTRODUCTION only made up 3 motors, since he’s flown "Further improvements on the next OF THE ALL NEW it under full power only 3 times. Mr. Goodcookie will include decreasing NELSON COMPETITION . 15 ENGINE MODEL OF THE M O N TH : the weight of the prop/noseblock unit, a STANDARD AND R/C Mr. Goodcookie Mk. 2 by John O'Leary light fuselage, and covering the stab, If all the above has inspired you to try rudder, and wing tips with a Microlite- AVAILABLE JUNE 1, 1981 an Unlimited Rubber (oops, Mulvihill) type film. I was really impressed with the model, take a look at this month's amount of strength imparted to the For complete information, 3-view. Here are some additional com­ wing's stress points through H ot-Stuff­ send a large, stamped, ments by designer O’Leary, from the ing carbon fibre to the dihedral breaks. self-addressed envelope to: Minneapolis Modeler newsletter: Although the finished wing weighed "The nicest compliment paid me only 29 grams, it has held up well even Kustom Kraftsmanship regarding this aircraft was a comment by on damp, tissue-sagging days. The use of P.O. Box 2699 an inactive club member who said, ’By 1/32, contest grade C-grain ribs in the Laguna Hills, CA 92653 God, John . . . that airplane flies so main wing panels was a mistake (curly beautifully and majestically, it gives me ribs), and I’ll substitute 1/16 in the next Dealer inquiries invited. the itch to get started again.’ ‘Mulvi,’ M r. G.” a.k.a. Unlimited, has always been a DARNED GOOD AIRFOIL: favorite event of mine. It has been well Gottingen 362 popular airfoils already drawn up for documented that no other outdoor This is another of the early Gottingen you ... a handy addition to your book­ event has the duration potential of a full sections I discovered while rummaging shelf. It’s reasonably priced at $3.75, bore, 300 sq. in. ’M u lvi.’ through old NACA reports. It has all the from FAI Supplies (P.O. Box 3957, Tor­ "The design elements of a successful attributes of a good model airfoil; 6.5% rance, CA 90510). O ne m inor gripe is Mulvi are well established and are thickness, a mean camber of 5.5%, and that airfoils aren’t drawn in 5, 5-3/4 or reflected in Mr. Goodcookie, i.e., build an upper camber drop-off of less than 7-1/2 inch chord lengths (which are it as light as you dare, utilize the maxi­ 5% between the 40% and 80% stations. quite common for current FAI designs), mum allowable wing area, stick a large, This should make a nice Wakefield or but a little work on a Xerox machine will efficient prop up front, use a ru b b e r/ Nordic airfoil... may be a real “ sleeper,” blow them up a bit, since each copy is a airframe w eight ratio of at least 1:1 (but since the only place I've seen the little larger (about 3%) than the original. preferably more) and trim it right ordinates was in the NACA report. MYSTERY MODEL power/left glide with ample washin on However, FAI Supply’s Book of Air­ This is another of those immediate the right wing panel. I opted for a foils has the Gott. 362 drawn up in a post-war designs that were too late to somewhat larger-than-normal prop, variety o f sizes to suit 3-1/2 inch to 8 inch qualify for Old Timer status, but still and a long motor tube to minimize chords. This book also has 77 other have the “ feel” of an Old Timer. Just ENGINE CYLINDER HEADQUARTERS! SUITABLE FOR SCALE OR STAND-OFF MODELS , AVAILABLE FOR IMMEDIATE DELIVERY Take the hard work out of radial engined models! These highly de­ tailed cylinders are precision molded from high-impact styrene, and fea­ ture deep cooling fins. SIZES: Whirlwind: 1", 1 2 " scales Le Rhone: 1", 1 2 " scales LE RHONE \ Wasp: 1 ", 1 2 " scales i UNIVERSAL WHIRLWIND Universal: %" scales ALSO AVAILABLE. MACHINE GUN KITS · SCALE WHEELS · PILOTS · CANOPIES 1 ÍIU A M S S1.00 FOR COMPLETE CATALOG DEPT. MB · IB1 PAWNEE STREET, SAN MARCOS, CALIFORNIA · 92069

APRIL 1981 95 FREE FLIGHT Thornburg ... Continued from page 23 COVERUP! HARDWARE ing, they’re inefficient. Besides, who can Sturdy, dark green vinyl covered root*, eccilio«/! build the tail that light? Combine this kind of pitch instability binders for your valued copies of WINDING BALSA MODEL BUILDER. Gold logo. with an all-flying rudder that’s being HOOKS STRIPPERS blanked out by that huge windshield, and what you’ve got is ... a beautiful • SO mount display m odel. So the Volksplane was IdETEX mot mime CIRCLE TOW' never kitted by Southwestern; when ΓΕΘϋΡΕ H U B 1 d t k i t ö Mark’s Models took over the produc­ :: :.\ tion of the kits last fall, I d id n ’t even pass emcirnt mount ^ 0 r t r t tomatem *·. ■«« tom o t ^ fOUPlOO Ola ·· mmo tJ on the drawings and specs. caratoc I ------\ Albuquerque modeler Dick Roberts, dIM CROCKET REPLICAS co-designer of the Honker Bipe, built P.O. BOX 12600 one of the prototype Volksplane and used aileron control, rather than rudder, FRESNO. CA 93778 with much more success; his bird is still flyable, five years later. Incidentally, the gine run, due to the excellent glide of Honker wing panel, a completely the Ramos XX47 airfoil” style prevalent machine-shaped 36x6 inch flying sur­ in the early 40’s. (This is to be distin­ face, ready for Monokote or light fuel­ guished, of course, from the type article proofing, is now available separately Only $4.95 each, two for $8.95, three which carefully explains how all theside from the kit. See your dealer or order for $12.95, four for $16.95, or five areas and moments were calculated to direct from Mark's Models, 1578 Osage. for $20.50, postpaid in the USA. Out­ give a desired power pattern, while San Marcos, CA 92069. side the USA, add 90 cents per binder. neglecting to give any indication of CG To avoid ending this roundup of location.) The sharply tapered tips, and weirdies on a negative note, I’ve in­ California residenti add 6% sales tax. anhedral stab, along with the fuselage cluded a shot or two of Staggerlee, a shape, should be identifiable features. If little tricycle-geared biplane that was a NOTE One binder holds 1971 and 1972. Use one binder per year for 1973 to present. you recgonize it, send you entry to the thum ping success from the very first (For UPS delivery, add $1.25 per binder.) MB office (not to me) to see if you have flight. Overpowered by a Max .25, this won the free subscription. creature is about the stablest biplane MODELS Well, that’s it for this month. I’m I’ve ever designed. The (Honker) wings leaving off the 1/2A Spacer flying in­ are set in reverse stagger, like the old BUILDER structions to make room for Reid Simp­ Staggerwing Beech, and this really does Box 335, 621 West 19th St., son’s Sierra Cup report, so you’ll have to help the plane's stall characteristics . . . Costa Mesa, California 92627 wait for the next issue. (I’ll probably be just like the formula predicts. The out testing mine at the same time. If bottom wing is set at a slightly higher look at the bulky cross-section on the you're building one, be advised that a angle of attack than the top, so that it fuselage and the stringer and planking TD .049 on a Tatone Tankmount will stalls first. At stall, the bottom wing construction, with an ignition .19 in the make the Spacer balance about 1-1/2 "disappears” aerodynamically, leaving nose. The construction article was even inches nose-heavy, so plan to use a you with a high-wing monoplane that written in the "Gee Whiz, I got a 25- lighter mount, that putsthe engine close has a VERY forward center of gravity . . . minute flight on only a 19-second en- to the firewall). · just the ticket for stall recovery without the usual snap roll and death dive. And much as I hate to admit it, Staggerlee’s WESTBURG ground handling is much better than the Honker Bipe’s, thanks to the tricycle SCALE PLANS gear. Of course there are folk on every flying field who will tell you that you’re • 1/12 size 1~ * 1 ft Boeing F40-4/3 4 1200 not a real pilot unless you can handle a Curtiss A-B Shrike 3 $9 00 taildragger .. . but personally I enjoy an Curtiss N2C-2 Fledgling 4 1200 occasional hands-off takeoff, don’t you? Curtiss Gulfhawk 1A 2 600 Curtiss O-10/A-3 Falcon 3 900 And so much for the roundup of Curtiss P-10 Hawk 3 900 oddities. I haven’t mentioned the Curtiss XP/VP-23 3 900 Czech Avia B-534 2 600 torque-reaction "flying swastika” made Davis D-1K 2 600 with a Clorox bottle, or the lifting body Douglas 0-2SC 3 900 Douglas O31A/O-310 3 900 free flight that looks like a Japanese- Douglas O-31C/Y10-43 3 900 tissue-covered Goodyear blimp . . . both Douglas 0-36 /0-38B 2 600 of these are lifted more or less intact Douglas 0-43A 3 900 Douglas 0-46A 3 900 from model magazines of the mid­ • i/24fh size 1/2" = 1 ft No sheets Price Fokkar D XVII 3 900 Douglas 0-35/0-7 1 S3 00 fifties, so they’re not original designs. General Western Meteor 1 300 Douglas ΧΟ-36/ΧΘ-7 1 3 00 Stearman4E 1/12 size 2 600 And, yes .. . they do fly. Travel Air 2000 2 600 I hope you find some encouragement Waco ATO Taperwing 2 600 in all of this to experiment a bit with

• i / i 0 1 h size 1 2~ 1 1 H Mailed 4th Class, folded. some of your own dreams. W ith patience Berimer. Joyce P-16 4 $1200 Add $1.00 per order for and tall grass, you can make almost Curtiss ØFC 2 Goshawk 4 1200 Curtiss F9C-2 Sparrowhawk 4 1200 1 st Class & A ir Overseas. anything fly if you want to badly enough. Curtiss Hawk P-6E 4 1200 And when you get it flying, how about FiaiCR-32 3 900 bringing it around to my flying field? I’m Great lakes Trainer 4 1200 Hawker Fury Mark 1 4 1200 All prints are Neckline — 30 x 42 Inebes sick and tired of looking at kit-birds. · Hawker Taper Wing Fury 3 900 Hawker Persian Fury 3 900 PETER WESTBURG Monocoupe 90A 2 600 834 Seventh St., No. 8 Sparmann P 1 2 600 Santa Monica, Calif. 90403

96 R/C MODEL BUILDER Sierra Cup . . . Continued from page 59 M J C R O jj Micro-X Puts Excellence in Your Modeling The contest schedule called for 10 rounds; 5 on Saturday, 12 noon to 5 ★ HIGH PERFORMANCE for the EXPERT In YOU! 2 .m.; a champagne flyoff at 5:15; a anquet at 8:00 p.m., and the last 5 ★ R/C Model Aircraft Kits!!! S ' Λ « flights from 8:00 a.m. to 1:00 p.m. on Sunday. ★ MICROLITE - Plain & Silver! Å /- . | The first round started rather slowly, ★ Early Bird Tissue for Antique Aircraft! o the timers were on the poles, but the fliers were slow to assemble. A lot of ★ 3 Outdoor 22" Span Rubber or C02 power kits! -5 equipment was being moved and wind­ ing stooges were being staked in place. ★ 3 Indoor & 3 Outdoor “ Peanut Scale Kits” § Finally 3 to 5 Nordics were airborn, then ★ True OLDE World Japanese Tissue White, Yellow, Orange ~ 3 or 4 more. Still no one seemed anxious to go up ... a lot of power and Wake­ ★ New Super Lite Japanese Tissue in 6 Colors! field fliers were watching, waiting. As Mike Fantham, of England, started to ★ Largest selection of Rubber Strip in the World! 21 SIZES ^ zoom his model, it bounced and the ★ Microfilm, glues, C-Paper, Indoor wood & Accessories!! § wings bowed. If he didn’t have air, who did! Quickly, 3, then 4 other Nordics ★ Plan service over 17 Scale, Semi-scale & Peanut scale popped up and off their zooms, slowly the gagle drifted toward the poles; one ★ At better dealers everywhere! CAT. $1.50 | motor then two came alive and within 30 : .. ·· . /L z to 45 seconds, the sky was full of models, MICRO-X-Products See Micro-X Picture: Margie holding * all d riftin g dow nw ind for an easy max. P.O. Box 1063-A for NEW Fun In Stinson & Piper Peanut Kits The weather, the wind, the lift, the Lorain, Ohio 44055 Your Modeling!! with 22" Taylorcratt & Voyager models, continued this sensational act over and over as the afternoon wore on through the 5 rounds. At the end of 5 with a chuckle, Ken Oliver and his timer the awards presented to George Xenakis, rounds nothing was settled in any event. came up with a 4:40 flight. Ken, it turned and Doug Galbreath by NFFS, for their Too many with full houses, too many out, while not doing too hot in the models of the year. rounds to go. But why worry, it was regular contest, had taken the time to Early Sunday m orning brought crystal champagne flyoff time, the time for fun retrim his model and had opened up his blue skis, no wind, and low sixties. The and truth . . . just how good were these glide circle to the point where it had air? For the power ships, fantastic .. . designs. The rules are simple, all launch only done 1-and-3/4 circles during the flights close to 4:30, Wakefields . .. 4:00 within 5 minutes, and a single high time entire flight. plus. But the glider boys had to hustle to flight. As smiling faces approved, the winners find the air. And find it they did, with The first off were the F1A (Nordics), had a contest popping corks, then enough of them finding it to eventually 5 minutes of towing, no more. It was poured the champagne, tokens of a well send 6 men into the flyoffs. extremely calm, so the launch was in all deserved victory and a highlight of All through the morning the weather directions. Most flyers, not knowing fellowship. just got better and better.. At one point, what the next few minutes would bring, The banquet at the Cordova Lodge a high bubble hung over the starting zoomed their models at the slightest brought out a lot of smiling faces. Happy oles for better than 5 minutes, alia flier indication of lift. Early times of 4 minutes with the flying, happy with the sit-down ad to do was throw it up and stand plus had some happy faces, but as the buffet for over 100 people, excellent around and gape vertical along with his times were called for, two fliers were still food, excellent service. The program for timer and presto . . . 180. up. H ugo S a ndroni, Jr., age 15, was the evening included some fine wine For the W akefield flyers, the last two hanging on to a light bubble that finally provided by the Canadians for toasting, rounds threw the final standings up for gave him 5:40 plus, but the last model to words of welcome by the Contest Direc­ grabs. Hugo Sandroni, who went into be launched from far to the south was tor Roger Simpson on behalf of the the 9th round as the only flier with all still holding. Finally, the only happy face sponsoring club, the Sierra Eagles, and maxes, got off very late in the round and to be seen was M ike Fantham of Great Britain, with his 6 minutes plus flight. Timers were reassigned and the FIB (Wakefields) were wound; with a shout, CURACAO M0DELB0UW a mass launch was off, good power PRESENTS FOR THE U.S.A. MARKET bursts, good cruises, and then the wait M O O E LB O A TS & - SHIPS, oldtimers as well as modern. for the glide, slowly they drifted off to the north and at 4 minutes plus begin to • All highest quality hobby kits, touch down. The happy face here be­ a Over 90 models to chose from longed to Bob White and his "vol libre” a All features complete with eoglish instructions incl. design. a Precision fittings end details An agreement to start and launch the e Wide range of propulsion systems available F1C (power) ships en masse brought a a Suitable for R/C. shrieking howl of 2, then 3, then 8 to 10 power ships, all being needled to their peaks. Their launches, while all not simultaneous, were still close enough to make one realize just how hard it is to time engine runs. The three highest Complete catalog showing a number of other interesting kits will be sent to ships held everyone’s attention as they you on receipt of US$4,- to cover airmail charges (refundable with first order). slowly drifted north towards the Wake­ CURACAO MODELBOUW - P.O. BOX 470 field touchdown area. Early reports were Curasao. Neth. Antilles heard of 4 min., then 4:20, then a close retail wholesale - import and export design custombuild 4:33, and a 4:37 were called out. Finally, APRIL 1981 97 PLANS: ALL CONSTRUCTION PARTS PLOTTED ON mal, and the contest was settled by EMS SR· 1 THESE PLANS OF ESTABLISHED SCALE ACCURACY & DETAIL ADD YOUR OWN SYSTEM FOR FORM OF Dave’s model playing around better in SERVO FLIGHT DESIRED; R/C. CL. F/F GAS. RUBBER. ETC. some ground lift for a 214 second flight. REVERSER 1932 GEE SEE R l, 2 "-V . 8 UienB $16.00 Final standings in power showed Dave 1931 GEE BEE "Τ'. 2 "* V 11.00 Sugden 1st with 2554, Roger Simpson Price - $10.95 Above plans used by Granger Williams for R/C (Include S I.00 1932 GEE BEE R 1. W t CL win* 7.00 2nd with 2533, Reid Simpson 3rd with per order, for 1932 GEE BEE R-2. V - V . NEW" Shown below 10 00 1980, Doug Galbreath, w ho had dropped shipping and MONOCOUPE 110 CLIP WING. 2" - V 10.00 h a n d lin g .) 1940 CULVER CADET. 1 "-V . beautiful! 7.00 some time way back in the 1st round and 1932 HALL RACER. 1/2"-1* -1 3 " vpan Peanut a 50 had then put 9 straight maxes up to put Plugs into your system between the Receiver Postpatd VERN CLEMENTS. AM A 70711 and Servo and reverses the direction of that P.O. Box 608. Caldwell. Idaho 83605 pressure on the rest of the fie ld , was 4t h servo with relation to the Transmitter Stick with 1785. Fifth place went to Russ motion. Available for all popular positive or Backer, 1723. negative pulse systems w ith connectors in­ The Nordic flyoff was a thing of stalled. An extremely handy device when beauty. Six fliers, all probing the field in installing your system in a new airplane. search of lift. And as the times increased Master Charge and VISA and models went further and higher, Dealer Inquiries Invited large posse’s of bikes with riders trying ELECTRONIC MODEL SYSTEMS to negotiate the terrain and keep one 6175 Palo Alto Dr., Anaheim, CA 92807 RARE GOLDEN AGE BEAUTIES YEARS OF HISTORICAL RESEARCH INVOLVED eye on the dot in the sky went roaring out and back once every 30 minutes while not maxing, still recorded a high place went to Joe Bilgri, who ventured until the 7-minute flight, where Matt enough score to stay in first place. out of retirement and open heart Gewain and Lee Hines both hooked Meanwhile U.S. team members Walt surgery to post a 1695. tremendous lifts but as will happen Ghio and Joe Foster were wresting Fiyoffs for power started with 3 fliers, when you must rely on a mechanical around with Bob White for 2nd and 3rd myself, U.S. team member Roger Simp­ timer wound to its limit, Lee dether- places. The 10th round treated Hugo no son, and our old friend and guest from malized prior to the 7 minutes and was better; damage to his number one Canada, Dave Sugden. The 4:00-minute on the ground at 404 seconds (6 minutes model forced a reserve model into flight narrowed the field to 2 when my and 44 secs) w hile M att continued for his action and once again the max eluded model, which had performed beauti­ full seven minutes. him. Meanwhile Walt Ghio and Joe fully all weekend by making 10 straight Final standings in Nordic were Matt Foster both maxed to move them up into 180’s, responded to my thermal picking Gewain 1st w ith 3120, Lee Hines 2nd w ith 1st and 2nd places respectively, with Bob by giving me my 11th consecutive 180 3104, Gary M edley 3rd w ith 2680, Jose White moving into third. flight, just what I needed. Both Roger Dona 4th w ith 2610, and M ike Fantham, Final standings in Wakefield showed and Dave were successful in the 5- of Great Britain, 5th with 2387. Walt G hio in first w ith 1762, Joe Foster minute round also. The 6-minute flight The trophies presented to the winners 2nd with 1754, Bob White 3rd with 1751, finally produced a winner. Both Roger are reminiscent of the trophies of the George Xenakis 4th w ith 1730 and 5th and Dave missed their intended ther­ old days, beautiful silver bowls on

TWENTY-SEVENTH ANNUAL RADIO CONTROL EXPOSITION Toledo Sports Arena One Main Street Toledo, Ohio

April 10,11 &12, FRIDAY 9 am to 6pm SATURDAY 9 am to 6 pm SUNDAY 9 am to 4:30 pm 1981

presented by Weak Signals R/C Club p.o. box 5772 toledo, Ohio 43613

98 R/C MODEL BUILDER Ace Radio Control. Inc ...... 70 INDEX TO ADVERTISERS Ravan Model Products ...... 90 American R/C Helicopters ___ ...... 73 R /C C o n s u lta n ts ...... 90 A s s o c ia te d E le c tr ic s ...... 65 K & B M fg ...... 1 Rhom Products ...... 81 Barron's Scale C lassics ...... 79 Kimbrough Products ...... 8 9 RJL Industries ...... 6 4 Bavarian Precision Products...... 70 Kraft System s ...... C o v e r 2 R oush M fg ...... 93 G. Bertella ...... 78 K & S Engineering ...... 68 Satellite C ity ...... 91 Blueridge M odels ...... 102 K u s to m K ra fts m a n s h ip ...... 95 Sig Mfg. Co ...... 5 Dave Brown Products ...... 78 K & W Enterprises ...... 91 S m ith P la n s ...... 95 Buzzer Model Airplane Co...... 87 L a u g h in g W hale. T h e ...... 80 S te rlin g M o d e ls ...... 77 Byron Originals ...... 3 MAC'S Model and Craft Show . . . . . 104 S u lliv a n P ro d u c ts ...... 83 C & D Enterprises ...... 75 M ic ro -X M o d e ls ...... 97 Su-Pr-Line ...... 80 Charlies R/C Goodies ...... 7 4 Midway Model...... 87 S venson M o d e ls ...... 82 Circus Hobbies ...... C o v e r 3 M id w e s t M o d e l S u p p ly ...... 84 Tatone-Quarter Headquarters . . . . 102 Vern Clements ...... 98 Model Products Corp ...... 8 6 Toledo Weak Signals ...... 9 8 C o v e r it e ...... 6 7 .7 9 Model Rectifier Corp ...... C o v e r 4 T o p F lite M o d e ls ...... 4 Craft-Air Inc ...... 6 9 W a lt M o o n e y P e a n u ts ...... 91 Uber Skiver Knives ...... 103 Jim Crockett Replicas ...... 96 S id M o rg a n P la n s ...... 9 4 VL Products ...... 9 2 C u ra c a o M o d e lb o u w ...... 9 7 Northrop Real Estate ...... 8 9 P eter W e s tb u rg ...... 96 Du-Bro Products ...... 7 1 Octura Models ...... 75 Williams Bros ...... 95 Dynamic Models ...... 92 P acer In d u s trie s ...... 85 W ilshire Model Center ...... 85 Electronic Model Systems ...... 98 Pacesetter Products ...... 64 77 P r o d u c ts ...... 8 8 FAI Model Supply ...... 95 P e c k -P o ly m e rs ...... 8 9 Flyline Models ...... 8 6 Pierce Aero ...... 8 6 Fox Mfg. Co ...... 76 Playtron, U S A ...... 82 H O U S E A D S G a y lo rd P lastics, In c ...... 7 6 .8 4 John Pond O T . P la n s ...... 9 3 B in d e rs ...... 9 6 Carl Goldberg Models ...... 74 Probar Design ...... 8 8 Classifieds ...... 9 9 G o rh a m M o d e l P r o d u c ts ------...... 83 Proctor Enterprises ...... 102 Oldies but G oodies ...... 6 6 Dick Hanson M odels ...... 90 Radio Control Buyer's Guide ...... 72 P la n s ...... 100.101 H o b b y H o r n ...... 92 RAM Radio Control Models. Inc . . . . 9 4 Subscription Form ...... 102

FREE SAMPLE COPY .. Used equipment CLASSIFIED ADS bargains! Hundreds of planes, radios, boats, helicopters, engines, etc., etc. Buy or sell, get Non-commercial (personal items) Rate is 25 cents per word with a minimum ol S3 00 one free ad with subscription: $10/year (10 Commercial Rate is 40 cents per word, with a minimum ol $5 00 No advertising agency issues) Write Hobby Swap. P.0 Box 834. d is c o u n ts a llow e d Santa Maria. CA 93456 All ads are payable with order, and may be lor any consecutive insertion period specified WANTED — OLD MODEL ignition engines, Name and address free, phone number counts as two words Send ad and payment to cars. etc. Paying top dollar Bill Simpson. 7413 MODEL BUILDER Magazine. Classified Ads. 621 West 19th St Costa Mesa CA 92627 Via Lorado. Rancho Palos Verdes. CA 90274 (213) 377-3532

PLANS: Great golden age flying models built FOR SALE: "Model Airplane News" maga­ up from world's largest (1300) authentic plans PEANUT SCALE PLANS: Boeing P-26. Fairey zines 1953-75, some annuals, used aviation line 6" to quarter size Send SASE for free Spearfish, Northrop P-61 E, $2.00 ea ppd, or books Send long SASE for list Milton Shep­ master list Cleveland Models, 10307M1 send $1.00 for sample plan and complete list. pard. Box 262 R D 4. Glen Mills. PA 19342: Detroit, Cleveland. OH 44102 David Diels, Box 101. Woodville, OH 43469. (215) 459-4926 hardwood bases and beautiful inscrip­ the poster of the scores on the large sizes: 2 inch scale and 1-1/2 inch scale, tions making sure that each trophy will scoreboard, Kitrick Sorenson, and all of for $16 and $7 respectively (the 2 inch be long cherished. These trophies are the timers who were the wives, children plans were used by Granger Williams, the result of the determination of a and friends of the Sierra Eagles, club includes 8 sheets). model club, the Sierra Eagles, to host members themselves who do not fly FAI, The Gee Bee "Z” is 2 inch scale, $11 one of the finest contests in the world and other council flyers who came to (also used by Granger Williams). and do it with class. Beautifully engraved town, (some from Oregon) just to time Other plans include the Monocoupe glass stemware was given for 4th and 5th and observe. They did a great job. 110 Clip-Wing (2 inch scale), the 1940 place. In addition to the 1st through 5th On the way home, Lynn and I talked of Culver Cadet (1 inch scale), and the 1932 place for each event, there were the how successful this meet has been, how Hall Racer, at 1/2 inch scale, which trophies presented to high time junior we had been blessed with tremendous makes a 13-inch Peanut. These retail for and high time senior. Hugo Sandroni, Jr. weather and how great the turnout had $10, $7, and $3.50 respectively. Newest was the winner of the Jr. trophy for his been. Tired, grimy and eyesore, we are item is the Gee Bee R-2, at 1 inch scale, efforts in Nordic, but the senior trophy looking forward to the 5th annual Sierra for $10. All plans are availáble from Vern went unpresented. Maybe next year Cup in ’81. See ya there. at the above address, postpaid. You add some young flier, encouraged by a (As of this writing, the trophies have your own system for the form of flight parent or friend, will compete at the 5th been bought for the '81 contest. It’s desired: R/C, C/L, F/F gas or rubber. annual Sierra Cup for these high time sanction has been applied for and ★ ★ ★ trophies. approved, through AMA and FAI for Continuing with our write-up on the The last trophy presented was the the 17/18 of October, with the Livotto extensive line of I.M. Products being large perpetual Sierra Cup, presented to invitational approved and scheduled for distributed by Circus Hobbies, which we the country for combined time of its the p rio r weekend in Taft.) · started in the February ’81 issue, our first highest placers in the 3 events. This year item this month is neoprene rubber the trophy was presented to the U.S.A. Counter___ Continued from page 9 tired wheels, ranging in size from 2 (Walt Ohio, Roger Simpson and Matt inches to 2-1/2 inches. Mounted on 6- Cewain), second place went to Canada build as much of the scale detail avail­ spoke black nylon hubs, these wheels and third to Great Britain. able on the plans into the model without are very sturdy, and the neoprene Amidst the goodbyes, celebrating and handicapping its ability to fly. There is should resist the effect of most exotic war stories, the Contest Director, Roger more detail available on the plans than fuels that might get on them. Simpson, thanked the contest admini­ most modelers can cope with! Next are streamlined weights, de­ strators, Lynn Simpson and Inky Davis, The Gee Bee R-1 is available in two signed to be glued to wingtips for

APRIL 1981 99 FULL SIZE PLANS SERVICE No. 181-O.T. '32 WAKE WINNER $2.00 No. 880 O.T. HAYSEED $4.00 Including reprint of construction artide S uper-light 3 7 " span rubber m odel uses motor stick. Designed by Gordon Light. Hot A/B pylon (no-window cabin) never (if ·η γ ) before published. 4-ft. span. Carl Hermes. No. 1812 PAULHAN-TATIN $1.50 Interesting 1911 streamliner with curved No. 7801 APPRENTICE $5.00 No. 4811 NORTH STAR S4.00 dihedral, in Peanut Scale. By J-F Frugoli. Continually popular genuine R/C trainer Military scale like R/C twin for .15 size for .19·.35 eng., 72" span. Bill Northrop. engines. All wood. By Kalevi Sundquist. No. 12801 OMAC-1 $7.50 R/C Sport Scale pusher-canard executive No. 481-C.P. S TIN S O N 105 $3.00 aircraft. 60 power. By Col. Bob Thacker. Competition quality 50-inch rubber scale STICK 'EM PATTERNS kit plans by Megow. All parts detailed. Complete sets of pressure sensitive patterns No. 12802 AUSTER J-5 $2.00 provide "printed wood” . . on your stock . . No. 481-O.T. POU DU CIEL $3.00 Fine flying, 18" span rubber scale light- fo r selected M O D E L B U IL D E R plans. Press Finely detailed 22-inch span rubber scale, plane. Double for Jumbo. Steve Gardner. all patterns for ribs, bulkheads, tips, etc., on Oct, '36 Flying Aces. By Ken Hamilton. proper thickness sheet balsa or plywood, No. 1280-0.T. STRUCK'S KGS $4.00 and cut 'em out' No tracing, no transferring, So-called because proportions are KG-ish, no plans tearing, no inaccuracies. Just like No. 3811 DORMOY "BATHTUB" $15.00 but the looks are Zipper-like. Class B/C. making up your own kit with printed wood. Unusual 1/3-scale R/C (8" span) early uF tra-light homebuilt, .40-.60. Hank lltzsch. "Stick ’em Pattern" numbers correspond to No. 11801 "MAMA MIA!" $9.50 plan numbers. Order with plans and they'll No. 3812 HANDLEY PAGE 0/400 $4.00 Latest, super-size pattern ship by leading be mailed together . . 3rd Class. Add 504 F/F scale WW-I bomber, 66" span, for 2 f lier/designer/kit manufacturer, Joe Bridi. per set to mail patterns 1st Class. 1/2A's. Major contest winner. B. Dennis. CALIFORNIA RESIDENTS ADD 6% TAX. No. 1180-O.T. FOKKER D-VIII $4.50 No. 381-0.T. SUPER BUCCANEER $7.50 Very stable F/F flying scale ship for .23 No. 11731SP BIG JOHN the FIRST $5.95 Most famous Antique gassie from 1937. ignition engines, 57" span. By Earl Stahl. No. 574 O.T.SP T O COUPE $2.95 Great for R/C, 90" span. Bill Eftinger. No. 6741SP TRIXTER BEAM S2.95 No. 1180-C.P. FAIREY "BATTLE" $3.00 No. 7741SPCURTISSA/12 SHRIKE S3.95 No. 381-C.P. WACO YQC-6 $3.00 Fine proportioned 30" span rubber pow­ No. 874-O.T.SP POWERHOUSE $3.95 Super-detailed plan from Skymasters kit. ered low-wing scale ship from Megow kit. No. 91074-O.T.SP BUHL PUP $4.95 A ll ribs and bulkheads accurately shown. No. 11743 SP "C -Q U E L L " S3.95 No. 980 O.T. DOLPHIN $10.00 No. 5 7 5 -0 .T . SP M E R C U R Y S3.95 No. 2811 LIBERTY SPORT $17.75 Beautiful planked-fuse lage 9' streamliner No. 775-O.T. SP BOMBSHELL S3.25 Mammoth 3-1/4" scale biplane for belt- from 1939 M.A.N. By Thracy Petrides. No. 277-O.T. SP BERLINER JOYCE $5.25 drive 60 on up. Four sheets. Roger Stera No. 577-O.T. SP GLADIATOR $4.75 No. 2812 DYKE DELTA $1.50 No. 8801 FUJAVAK $5.00 Super-light indoor Peanut Scale model. Sharp looking T-tail R/C powered glider Price includes 3rd Class postage and reprint W ill fly 35-45 seconds. By Ken Johnson. for .049-, 15 eng., 80" span. Pavel Bosak. of building instructions (if any). Add 654 PER PLAN for 1 st Class postage. Add $1.00 No. 281-0.T. HERON $3.00 No. 8802 SCHNEIDER CUB $6.50 PER PLAN for overseas orders (except APO A 48" span Class A gassie from Dec. "39 Famous R/C Aircraft No. 5. 3-time Nats and FPO). Complete plans list 354. winner, 6' span. .60 eng. Alex Schneider. Flying Aces. Cabin style. Frank Gagne. CALIFORNIA RESIDENTS ADD 6% TAX.

No. 1811 WACO YKS-6 $6.75 No. 8803 POTTIER P-70-S $3.00 R/C MODEL BUILOER PLANS SERVICE Classic cabin biplane in R/C Sport Scale. F/F scale French homebuilt, 02 electric, Box 335. 621 West 19th St. For .29 - .40 engines. By John Burns. trike gear. 29” span, neat' By E. Fillon. COSTA MESA. CALIFORNIA 92627

balance, but they can be used most improved Coyote features a larger, funded by the "First-Lady of the Model anywhere. Each is identified by weighi, roomier Dura-lene fuselage, which is Industry." Hazel Sigafoose, and will, and includes 6, 10, 15, 20, 25, 30, 40, and also lighter. The new wing has more henceforth, be administered by the 50 grams. sweep to decrease tip stalls and allow AMA. Hazel, quite naturally, wished to Two more radio accessories include a lighter overall weight. In production personally make this first presentation, fuselage switch lever and an antenna and available now, the price is $84.95, and to " unveil” the beautiful perpetual retainer. The switch lever consists of a with full-size plans and photo-illustrated trophy that she had created for the 1/16 wire with a slot at one end for a instructions. Contact Bob at 3058 N. occasion. Mike's name was engraved on retainer Έ'-ring (supplied) and a knob Marengo Ave., Altadena, CA 91001. first of the many blank nameplates which is soldered on to the outside end ★ ★ ★ adorning the trophy which will be on after installation. A rubber fuselage A new, high impact plastic U-control continuous display at AMA Headquar­ guide is also supplied. Best part of the handle is now available. Ii features an ters. Each succeeding year’s Achieve­ antenna retainer (for airborne antenna) adjustable lead-out cable and is safer in ment Award winner’s name will be is the fine 2-inch long spring for ten­ that the wire lead does not come in added in turn. Oh, yes, Mike s "take- sioning the antenna at the rear connec­ contact with the fliers hand. It has a home" goodies included a very excel­ tion. Rubber bands dry out and break comfortable hand-grip and is slanted for lent hand-executed Certificate of Award frequently. Also included is a rubber a more natural feel. For more informa­ . . . plus a very generous cash award . . . fuselage grommet and a piece of vinyl tion, contact Sturdi-Built Model Mfg., these were for take-home evidence tubing which is used instead of a wire­ 4203 S. Cloverdale, Rt. #9, Boise, ID attesting to his demonstrated skills. breaking knot at each end of the hook­ 83705. Phone (208) 362-5205.______· Mike is tne son of /im Clem, of CL Speed up. All items from your hobby dealer, or fame. A few years back, the name contact Circus Hobbies, 1241 E. Glen­ Workbench . . Continued from page 6 "Beasley-Clem Team"struck terror in all dale Ave., Sparks, NV 89431. Phone (702) hearts at the various speed circles across 331-5334. had been selected to be the recipient of this nation . . . not many people remem­ ★ ★ ★ the FIRST presentation o f the newly ber that /im is also a very capable free Never d id a 4-feggerf coyofe look as created annual "GLEN SIGAFOOSE flighter. preffy as this Coyofe . . . unless the 4- MEMORIAL IUNIOR / SENIOR The Planesmen Club is indebted to legged coyote was being looked af by ACHIEVEMENT AWARD," through his AMA's Frank Ehling, who acted as the another 4-legged coyote! Theonewe're outstanding achievements at the 1950 initial contact intermediary in making looking at happens to be a Bob Martin’s AMA National Model Airplane Cham­ this personal presentation memorable. R/C Models “ Coyote,” which is a 72- pionships! Frank is working very closely with Hazel inch span aerobatic R/C sailplane. The This annual award was created and in her efforts to recognize and aid the 100 R/C MODEL BUILDER R/CMB BRINGS YOU

...... OF OUR MOST POPULAR...... CLASSIC OLD TIMER FLANS No. 575-O.T. MERCURY $5.00 SEE PAGE WO FOR ORDERING INSTRUCTIONS. Designed by Ben Shereshaw, kitted by COMPLETE R/CMB PLANS LIST SENT WITH EACH ORDER. Scientific. 72" span. By Phil Bernhardt. No. 1180-O.T. FOKKER D-VIII $4.50 No. 977 O.T. "GUFF" $4.00 No. 475 O.T. G.H.Q. SPORTSTER S5.00 Very stable F/F flying scale ship fo r .23 Walt Good's 1938 Class 'C' gas winner, From July 1936 M A N., also kitted by ignition engines. 57" span. By Earl Stahl. from '40 AT. Span 72". Al Patterson. G.H.Q. By Louis Loutrel. Phil Bernhardt.

No. 980-0.T. DOLPHIN $10.00 No. 877 O.T. PB 2 $7.00 No. 175-0.T. FLYING QUAKER S5.00 Beautiful planked-fuselage 9" streamliner Payload gas model winner from Aug. '38 First gas model kit by Megow, 1937. from 1939 M.A.N. By Thracy Petrides. M A N Spans 8 feet. By Thracy Petrides. Span 7 ft. Redrawn by Phil Bernhardt.

No. 880-O.T. HAYSEED $4.00 No. 777 O.T. NEW YORKER IV S3.00 No. 1274 O.T. THERM'L THUMBER S4.00 Hot Class A or B pylon type gas model Hot A/B pylon (no-window cabin) never Frank Zaic's 1938 Stout Trophy winner, before published. 4-ft. span. Carl Hermes. also for Wakefield. Patterson & Northrop. Span 48". Redrawn by Phil Bernhardt.

No. 780-0.T. STRATOSPHERE $150 No. 577-O.T. GLADIATOR $5.00 No. 1174-O.T. LANZO STICK $3.50 Streamline cabin rubber ship from May Class C free flight from March 1941 Air Rubber stick winner, '40 Nats. Span 4V4'. 1941 M .A .N ., 36" span. By Henry Cole Trails, 68" span. M. Schoenbrun design. Still good in Unlim. By Phil Bernhardt. No. 380-0.T. FLAMINGO $6.00 No. 477 O.T. CLOUD CHASER $1.50 No. 91074-0.T. BUHL PUP $6.00 Rare old-timer appeared in 1938 JASCO This 3 0 " span stick job from 1938 MAN Semi-scale 8 ft. span model published in catalog, 89" span. By Roger Hammer. is OT, FF trainer. Unlim. Bruno Marchi. 1936 MAN. Redrawn by Phil Bernhardt.

No. 280-O.T. RED RIPPER $5.00 No. 377-O.T. GAS CHAMP $5.00 No. 874 O.T. POWERHOUSE $5.00 Sort of a 'squared off' Zipper, from 7/40 The famous 1940 "Eastern States Champ" Taibi's famous design for Forster 99 ign Flying Aces. 7 2 " span. By Jerry Peeples. by Russell Simmons, span 76". A l Patterson. Great for R/C O. T. By Phil Bernhardt.

No. 180-O.T. SUPER CLODHOPPER $3.00 No. 1276 O.T. RAMBLER $4.00 No. 674 O.T. RED ZEPHYR 55.00 Highly refined version of 1937 Moffet Good 72" span contest gas model trom One of the most famous of early kit gas winner, from 1941 A.T. By Jim Cahill. 1939 Flying Aces. By Gilbert Shurman. models. Redrawn by Phil Bernhardt.

No. 1279-0.T. MISS TINY $4.00 No. 1076-OT CALIFORNIA CHAMP $3.00 No 574 O.T. The T D COUPE $5.00 Well known and sharp little 1938 gassie 1940 Wakefield with retract wheel, twin Classic high wing 1936 'C 'ca b in gas job rudders, anhedral stab. Tom Engleman Span 64” Redrawn by Phil Bernhardt for .19-.23 ignition, 46” . Barney Snyder.

1179-O.T. MISS PHILADELPHIA $8.00 No. 976 OT WINGED VICTORY $5.00 No. 474 O.T. PACEMAKER $5.00 Maxwell Bassett's famed 8-ft. parasol gas Classic and realistic gas model from 1937 J L. Sadler's famous Class C low wing model, kitted by Scientific. By MB staff. M AN. Radial cowl, 5' span. Joe Weathers. gas model Redrawn by Phil Bernhardt

No. 979-0.T. LANZO '37 STICK $8.50 No. 876 O.T. RECORD HOUND $5.00 No.274 OT PACER "C” 54.00 First R/C Nats winner, 4th in Famous Shoulder-wing mono-wheeler with anhed­ Sal Taibi's famous 1941 Nats gas winner. R/C series. Spans 9 ft. By Chet Lanzo. ral stab. Span 72". Hank Struck design. 60“ span. Redrawn by Phil Bernhardt.

No. 879-O.T.-2 CHALLENGER $4.00 No. 576-0.T. SCRAM $5.00 No. 174 OT EHLING'37 GAS JOB $5.00 Easily-built Class B gassie w ith 50" span Clean Class C cabin job from July 1938 Frank Ehling's 8 ft. span 1937 gas model from May '41 A ir Trails. H.A. Thomas. Flying Aces. Span 83". Heit/Patterson. Stil! winning1 Drawn by Phil Bernhardt.

No. 579-0.T. TAYLORCRAFT $12.00 No. 476 O.T. CABRULER S4.00 No. 1273 OT INTERCEPTER $2 00 Quarter-scale in 1941! Famous 9-foot de­ Never-before published Class A cabin m o­ An .020 Replica of popular Goldberg de­ sign kitted by M iniature A ircra ft Corp. del New Ruler, by designer Hank Struck sign, kitted by Comet By Wayne Cain

No. 379-O.T. PRIVATEER $6.00 No. 276 O.T. "LONG CABIN" $5.00 No. 1073-OT GOLDBERG ZIPPER $4.00 Very clean cabin design from Sept. '38 Good looking, stable cabin gas model of Most famous of all OT gas models, ended M .A.N., 8 7 " span. By Thracy Petrides. the 1937 era Span 78” Phil Bernhardt cabin era. Redrawn by Phil Bernhardt No. 878-0.T. .020 RECORD HOUND $2.50 No. 176 O.T. KORDA WAKEFIELD $2.50 No. 973 OT SPOOK 48 $4.00 Classic Henry Struck design. Could dom ­ The classic of all rubber powered comp­ Well-known gull wing design qualifies for inate .020 Replica class. Dave Sweeney. etition free flights. By Phil Bernhardt. Antique Old Timers. By Snyder & Muir.

No. 778-0.T. CURTISS ROBIN $6.00 No 1175 O.T. FOO 2-U-2 S3.00 No 773 OT LANZO 8' GAS MODEL $6.00 A 1937 Sport Scale ship1 From Comet A pre-Zipper design by Dick Obaiski, re Chet Lanzo's famous "Record Breaker " k it, 72” span. Designed by Joe Konefes. duced to .020 Replica, by Ron Sharpton Two large plan sheets By Phil Bernhardt

No. 678-O.T. MISS DELAWARE $5.00 No. 875 O.T. '38 MOFFETT CHAMP $3.00 No 673 OT ALBATROSS $4.50 Steve Kowalik's 1937 Junior Motors Con­ Canadian Roy Nelder's beautiful rubber Class C gas ship designed by George sistency winner. Easy to build. 7' span. ship A real classic By Phil Bernhardt Reich Redrawn by Phil Berhardt

No. 1277 O.T. HURRICANE $2.50 No. 775-O.T. BOMBSHELL $4.00 No 573 OT 1 AERBO 020 $3.00 Earl Stahl's 33" span 1940 rubber pow­ Famous winner o f Class C gas at the ‘40 Replica of 1941 Class A Nats winner ered low winger. Northrop & Patterson. Nats, by Joe Konefes. Phil Bernhardt. Siian 30” Redesigned by Phil Bernhardt

APRIL 1981 101 Drone Squadron, Inc.) of Lansing, MAMMOTH SCALERS Michigan is sponsoring a “ Monster Airplane Rally" on Saturday and Sunday, )une 27 and 28, 1981, at the Michigan Trapshooters Association campgrounds, near Mason, Michigan. The site features camping facilities for up to 100 camper units, overnight hangar facility with electrical outlets for charging, conces­ sion stand, and outdoor commercial MINI-ANTIC display area. Outside of minimum air­ COMPACT CAR SIZE-.29 to 40 ENGINES 56" craft sizes specified (5-foot span for biplanes, 7-foot span for monoplanes) SPAN A REAL PLEASURE TO BUILD & FLY. no details are given as to the activities NOW AVAILABLE FROM r? D C lO r ENT CORP planned. PO BOX 9641 SAN DIEGO CALIFORNIA, 92109 Hmmm . .. trapshooters. Better put Write or call h r catalog and price into. SEND * 1 0 0 FOR COMPLETE CATALOG OF armor plating around the radios. .. AIRCRAFT. HARDWARE. & ACCESSORIES.PLUS SOME VERY OLD BUSINESS QUARTER HEADQUARTERS A DESCRIPTIVE «M IN I * BROCHURE ______A d:v .·■ ■' Titer:** Pr.-duc·' ______We had several comments from read­ |M . H I » H l tai Iraaclic». Ca. M1H <«■») ers who noted in late 1979, when we Dallas area, feel very privileged and published an article about our last Parcel honored to have been invited to share Post Proxy Peanut contest, that the l i p * # with Hazel in the spirit, respect and love Grand Peanut, Sherman Gillespie’s involved in the creation and presenta­ “ Gadfly,” appeared in our photos with­ tion of these memorial awards. Our out a pilot. How come this plane could hearty congratulations to Mike Clem, be the winner without meeting one of both for earning the award and for the most important rules of the contest, making this memorable gathering pos­ a pilot in the cockpit? sible in our area. . . Recently, when discussing with Sher­ INDUSTRY NOTE man some details of a future construc­ The SQUARE EAGLE P-30 Cosmocon Ltd., R.R. No. 2, Uxbridge, tion article, we asked him about the First, Open 19Θ0 Nats First, Open 1979 U5"C Ontario, Canada L0C 1K0, is offering a missing pilot. Had we really goofed by IT ÚIINS! $15 rebate, plus a colored jacket em­ overlooking this pilot requirement, one 110.00 plus SI.75 shipping. blem, to present and prospective own­ which this editor has been strong about Some of the finest hand crafted free ers of its Quadra-Charger unit. To for all scale models for many years? Well, flight kits you'll ewer see, for qualify for the cash rebate and the sighs of relief, the Gadfly d id have a Deginners and experts. emblem, owners must send photo­ profile pilot in the cockpit (sufficient by Catalog the rules) during static judging, as 25* graphs of their plane or boat, showing details of the Quadra-Charger installa­ revealed in photos taken by Bill Hannan xBLUE RIDGE MODELS«. tion, together with a performance de­ during that period. Also, Sherman found BOX429. SKYLAND. N.C. 28776 scription, including weight and prop the pilot in the bottom of the shipping younger model builders and fliers . . . size. container when the model was returned the aid in the form of a second and The main purpose of the rebate pro­ after the contest. Obviously, the pilot separate annual award(s) to wit: The gram is the building of an Information bailed out sometime during the rigors of "GLEN SICAFOOSE MEMORIAL Data Bank to assist other modelers and the competition flying, and was “ boxed” SCHOLARSHIP AWARD." I would sug­ to provide data for futuredevelopments. by the proxy flier. gest that inquiries concerning the Send your photos and information to The close-up photos which we pub­ Scholarship Award be directed to Frank the attention of Klaus Nowak. lished were taken after the Gadfly had Ehling of AM A Headquarters. MONSTER AIRPLANE RALLY come back to the office from the flying We, the modelers of the Fort Worth- The C.A.R.D.S. (Capital Area Radio site, and were thus “ sans pilot.” · SPECIAL R/C MODEL BUILDER SUBSCRIPTION OFFER

W ITH YOUR MONEY SAVING SUBSCRIPTION OR RENEWAL ■ FREE TO R/C MODEL BUILDER MAGAZINE. THE BOOK CONTAINS ARTICLES ABOUT BUILDING. COVERING. FINISHING. AND THIS $6 95 BOOK FLIGHT ADJUSTMENT . PLUS FULL SIZE PLANS FOR 12 1/2-INCH SCALE. FREE FLIGHT. WWII FIGHTER PLANES. PROTECT YOUR SUBSCRIPTION IN Name AN ENVELOPE . . (pleas« print clearly) SEE BELOW Address IMPORTANT'! IsthrsaNEWI ) or RENEWED! ) sub’ SEND ME: Expiration date:------City ___ S ta te . Z ip □ 1? ISSUES FOR $25.00 □ 24 ISSUES FOR $47.00 VISA ( ) Master Charge I ) No. (17%OFF Newsstand Cost) (22% OFF Newsstand Con) Rales apply to the U S . its possessions Elsewhere add Expiration Date $3 50 per year. ( I Credit Card ( I Check Enclosed To have your subscription mailed in a protective envelope, add $3.00 per year to the above rates, Signature------and check here ( ). R/C MODEL BU ILD E R . Box 335, 621 West 19th St. Costa Mesa. California 92627

NO NEED TO CUT YOUR MAGAZINE. DUPLICA TE THE FORM. OR JUST SEND US 102 THE INFORMATION REQUESTED ON A SEPARATE PIECE OF PAPER. R/C MODEL BUILDER IN THE BEST CIRCLES, IT’S titoer v«*·''

A PRECISION INSTRUMENT FOR THE DISCRIMINATING MODELER

Safe, Rear Draw-Bar Clutch Available in seven satin anodized handle colors: silver, blue, red, green, gold, copper, violet. Precision, Instrument-Quality Materials 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 ...... S14.95 Deeply Knurled, Non-Slip Grip Individual handles (specify color) $5.95 Long-Life, Stainless, Vial of 6 blades (No. 10, 11, or 15) $2.10 Surgical Steel Blades (No. 12 or 20) $3.30 20

See your dealer, or order direct. Dealer inquiries are invited. PRODUCTS All direct orders sent postpaid in U.S. MODEL BUILDER California residents add 6% sales tax. 621 West Nineteenth St., Costa Mesa, California 92627 FEATURING RADIO CONTROL PLANE, BOAT, CAR AND HELICOPTER DEMONSTRATIONS · DOLL HOUSE MINIATURES · HUGE MODEL RAILROAD LAYOUTS IN ACTION · NEEDLECRAFT, CERAMICS, MACRAMÉ, AND OTHER CRAFTS · FREE SHOWS · FREE MOVIES · FREE PRIZES MODEL AND CRAFT SHOW APRIL 25-26 LONG BEACH CONVENTION CENTER LONG BEACH, CALIFORNIA EXHIBIT AND TICKET INFORMATION CALL: 714-891-9559

104 R/C MODEL BUILDER ř «fCUS C '* ^

DUANCED R/C TECHNOLOGY SETS EXCITING NEW STANDAR

ECTRA SERIES Meet the challenger in the R/C field, JR's SPECTRA SERIES A composite of advanced electronic R/C design and engineering utilizing the latest knowledge and experience from space age electronics. Modern in­ tegrated components as well as mechanical engineer­ ing features never before offered to the hobbiest. JR's and CIRCUS HOBBIES' dedication to quality and service {make the SPECTRA SERIES the logical choice for cham­ pions and champions to be

STEM 7C-4SH (Transmitter illustrated) Dual aileron and elevator rates. 2 auxiliary trim func- [tions located on top of transmitter. Retract function. rNET-127 Transmitter NER-227 Receiver 3 NES-101 (Servos. 1 NES-102 Servo Ireverse). 500 MAH Receiver {{Battery Pack Charger Aileron Extension Cord “ Yfc {Harness Servo Trays Necessary hardware. 1TURES JR Transmitters: Dustproof open gimbals Adjustable stick length and angle Double Trim (adjustable). Rugged aluminum case Bright LED "on" lamp (visible in bright sunlight). "On Off switch lock Cross checked side panels to SPECTRA SERIES- assure firm but relaxed handgrip. JR Receivers: Unique and exclusive "3H" system assures high selec­ tivity, high sensitivity and high stability without com­ promising quality of any individual factor Decreased interference 6 to 10 decibel increase in signal to noise SPECTRA SERIES SYSTEMS are available in 2. 4. 5. 6 and 7 channel models ratio. 50% range increase JR Servos: Powerful (45 67 oz in torque). Extra long life servo potentiometer. Miniature size, (1.5 x .7 x 1.75 w/o mounting lugs) Light weight. (1.5 oz.). Watertight. Gold CIRCUS IIOBBII plated NASA quality 3 point connectors. Splined output CIRCUS HOBBIES INCORPORATED A subsidiary of CIRCUS CIRCUS HOTELS, shaft for mechanical neutral adjustment. Special PO Box 5215 Reno, Nevada 89513 moulded rubber mounting cushions. MRC TAMIYA'S BAJA RACING BUGGIES wail Through Water, Sizzle Through Sand, Plow Through Mud Like No Other R/c Electric Car Kits Ever Made. THERE'S NO MATCH FOR THEIR STRENCTH AND lightweight, strong die-cast aluminum front STAB!; ... one look will tell you there has never suspension with a double trailing arm assures been anything like them. They're built like trucks, positive control over any terrain. The ball joints run like cheetahs, and can take anything off-the- are even connected to the tie rod for simple road competition can dish out. adjustment. And because you build these brutes Designed to conquer the treacherous Baja, these from kit form, you'll be able to adjust, fix and 1/10 scale racing buggies take punishment and modify. You’ll know your machine . . . you can give all out pleasure. No R/C car has ever been so conquer the world. innovatively engineered to give you such com­ WE’VE GOT YOU COVERED... On the underside you plete control and roadability on every terrain. will find a sealed metal transmission box to keep ROAD TAMING FEATURES FOUND ONLY IN FULL the mud and elements o ff the guts. Two special SIZE RACING BUGGIES ... Two forward and reverse rubber boots protect the steering cage and switch speeds propelled by a massive .05 electric motor harness, and a waterproof radio/battery box with provide the power. Four adjustable, heavy duty, cam locks keeps your system dry and clean. No shock absorbers that are actually filled with oil one has ever taken such design care with an R/C give you stability for all four semi-pneumatic tires. car before. Each buggy has deep ribbed front tires for stable it's all here, from the thick reinforced fiberglass tracking. The Sand Scorcher boasts special sand main frame to the specially constructed front tires in the rear, while the Rough Rider uses thick, bumper. The only vehicles that come close to block pattern rear tires for super traction. A pre­ these revolutionary mean machines are the full cisely operating independent 4-wheel suspension size buggies. See these at your hobby dealer and system smooths the jolts, flattens the bumps. A get moving o ff the road. Model Rectifier corporation · 2500 Woodbridge Avenue · Edison, N.J. 08817 MRC φ Γ’ TAMIYA