DEALERS: W rite For Details On How Your Name Can Appear In This Column
JUNE 1983 5 from
Northrop'*
Anita Northrop and Al Novotnik in the Model Builder Magazine booth at the WR AMS Show in workbench White Plains, N. Y. Al made the new booth backdrop. He's also MB's advertising representative, covering all areas, but particularly the east coast. • · · to the instrument board. There was no 5,000. I came down and saw fishing wireless, no special instruments. boats. I thought I was over the Pacific A BIT OF HISTORY Corrigan asked a boy from the hangar Coast. Most every aeronautica buff recalls to swing the propeller, but he couldn’t "A half hour later, I sighted land. It the name Douglas Corrigan, and the get it going. didn't look like what it should look like flight he made that put him into aviation “ Here, you hold the plane throttle. I’ll to me. I hugged the coast, and coasted history books. However, if you’re like swing it," Corrigan instructed, and he around to find an airfield. And here I am, me, the name and the flight may be all got the craft going. After it started, he far from Los Angeles, where I had that’s remembered . . . none of the took a flashlight to check the motor to planned to go.’’ details. The following brief account was see that nothing was coming loose. Despite probing questions from skep published in the January 1983 issue of At 5:17 a.m. on Sunday, the plane left. tical reporters, the American stuck to his the Suburban Aeroclub of Chicago Flares lighted the runway, and a fire story. Few believed him. Corrigan was newsletter, edited by Byron Sauriol and truck and an ambulance stood by. known to have wanted to fly to Ireland Eleanor Craniczny. Though the source Corrigan used 3,000 feet of the 4,200- (he had been denied permission the was not acknowledged, the piece was foot runway before getting his craft year before). And there was that east- credited to James M. Murphy. We airborne. bound takeoff in New York. . . thought you might enjoy this little bit of For some reason, the ship headed Soon nicknamed " Wrong Way,” the aeronautical history. east, and field personnel wondered personable welder-pilot had injected a DOUGLAS CORRIGAN’S why. bright note of levity into the dour, war- STUCK COMPASS A little more than 28 hours later, he shadowed world of 1938. An ex-welder from an aircraft plant in sighted some fishing boats, then found Corrigan and his crate made history. California hopped into his $900 single himself over land; he searched for an And the Burlington, Wisconsin, Liars motor Curtiss Robin plane, and 27-plus airfield, spotted one, and came in for a Club made Douglas Croce Corrigan a hours later. . . on July 9, 1938. .. landed perfect landing. life member. —James M. Murphy at Roosevelt Field in New York. Douglas " I’m Douglas Corrigan,’’ he told some IN SEARCH OF C. Corrigan, a 31-year-old flying buff, field personnel who had gathered Larry Benham, 3536 West Ave., #231, explained he was on a "vacation flight,’’ around his plane (which had no permit San Antonio, TX 78213, has an eight-foot and had made the trip nonstop. to land). "I just got in from New York. span Piper Super Cruiser, built from a For a week, he stayed with a friend. Where am If I intended to fly to Cali Capitol kit. He's rebuilding it, and needs Then, on Saturday, luly 16, he took his fornia. ” a set of the original plans and instruc nine-year-old plane to Floyd Bennett He learned he was at Baldonnel Air tions. Can any of our readers give him a Airfield in Brooklyn, and sought permis field in Dublin, Ireland. hand? sion to take off at 2 a.m. for the return Wearing oil-stained gray pants and a ★ ★ ★ flight home. leather jacket, the flyer was taken to the Our primary potentate, and purveyor "I want to fly by the light of the American Legation, and there he tried to of pretty popular Peanut plans, Walt moon," he told the field manager, "and explain to newsmen what had happened. Mooney, needs to hear from one Milton be over the desert in the cool of the " My compass stuck. It didn't come Patterson, of Crest Industries (or Indus morning. ” He was denied permission to loose ’til the end of the flight. I took a tries Crest), who lives at 143 Dolomite take off . . . “ too dangerous at that wrong turning. . . I headed as I thought Drive .. . somewhere in the world! It hour,” he was told. for California. I had no intention of seems that Walt answered an inquiry At 4 a.m., he was given the go-ahead. flying to Ireland. from Mr. Patterson, but somehow left He had had five new spark plugs put in, “For almost 26 hours, I was at 5,000 to the town and country off of theaddress! paid $62.26 for 218 gallons of gas (the 6,000 feet. . . in the clouds. I came down He’s believed to be located in Canada. If craft now had 320 gallons, plus 16 of oil). to 1,500 feet only when I ran into rain. I A single United States map was pinned glimpsed some water, then rose back to Continued on page 102
6 MODEL BUILDER OVER THE COUNTER
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A ll material published in "Over the Counter" is quoted or paraphrased from press releases furnished by the manufacturers and/or their advertising agencies, unless otherwise speci fied. The review and/or description of any product by R/CMB does not constitute an endorsement o f that product, nor any assur ance as to its safety or performance by R/CMB.
• Model Rectifier Corporation, also known as MRC, has just introduced its new 1/5-scale, ready-to-fly Cessna Sky Hawk kit. The Sky Hawk is an all foam airplane that comes complete with many of the assembly operations factory finished. Control horns, hinges, and pushrods are all pre-assembled so you can get into the air with a minimum of building. In fact, the Sky Hawk only takes one and a half hours to complete. The Sky Hawk is a stable aircraft. Novices will be attracted to its gentle MRC's new 1/5-scale Cessna Sky Hawk, a quick building, complete kit. flight characteristics, and experienced fliers will appreciate its outstanding strength and durability. or MRC at: 2500 Woodbridge Avenue, performance. Four channel control This complete Sky Hawk kit also Edison, N) 08817. includes: steerable nose gear, ailerons, includes a propeller, Enya .35 TV engine, ★ ★ ★ elevator, rudder, and throttle. The six- glow plug, muffler with extension, and a Top Flite Models, Inc. now has an fool main wing surfaces are ribbed just spinner for a total suggested retail price educational video tape available for sale like the prototype, and the wing is of under $225 (radio control system is or rent which covers basic tips for reinforced with wood spars for added extra). Contact your local hobby shop. beginners on how to Monokote: wings, fuselage sides, tail surfaces, fillets, as well Λ as tips on hinging and simple trimming — fm T_ Γ 1 MONOKOTE™11 VIDEO TAPE
’ · I f l I · I m
RLF Products' FAI/F3B winch spool. Top Flite Monokote "How to" video. Leisure Electronics' newest gear motor.
Sidney Cole's five-foot-eight, three-channel R/C submarine which dives just like the full-scale version.
JUNE 1983 7 Bob and Bill Hunter shooting the new Hot Stuff "Video Tips II." Davis Diesel C02 conversion for Cox .020 glow engine. with Super Monokote, Top Flite’s best $39.95 to Top Flite Models, Monokote I venturi, and an anodized muffler. Vibra selling iron-on covering. Proper use of Video Offer, 1901 N. Narragansett, tion is very low, and the engine sounds the Monokote iron, heat gun, and trim Chicago, IL 60639. very realistic. seal iron are carefully shown. ★ ★ ★ For more information and price, write This high-quality, one-hour video Enya Model Engines announces a or call Enya at P.O. Box 286, Fords, N) tape for VHS or BETA format players was major advance in four-cycle engines for 08863, (201) 572-5792. produced exclusively for Top Flite by quarter-scale model builders. The Enya ★ ★ ★ Four Pi, Inc., and sells for $39.95. If you .90 four-stroker has just been released to Attention model boat and ship enthu wish, return your Monokote I Video the modeling public. This new engine siasts! Here is a really unique item that Tape within 30 days for a $20.00 refund. meets all FAI rules for displacement. The will fascinate and thrill you . . . a three- Each video rental includes a coupon for new Enya .90 features technological channel, fully operational, scale, WW-II 12 rolls of Super Monokote worth up to advances which deliver a 50 percent T-Class British submarine. This 68-1/2- 50% off list price (applicable only to U.S. increase in power over .60 size four inch long, two-piece fiberglass sub orders), which could mean a savings of a cycle engines, with just a 30 percent marine features complete hardware whopping $75.60! increase in weight at only 28 ounces. (minus radio and glue!) including: If any of this interests you (maybe you Speed range is from 2,500 to 11,500 rpm. pump and dive motors, pump and dive should check you pulse if it doesn’t), The Enya .90 four-cycle comes with an batteries, all linkages, and all acces send your check or money order for Enya G-8 carburetor, a detachable 7mm sories. The highly detailed fiberglass hull
A&L Distributors, Inc. new ordering catalog.
Roush Manufacturing's new 1.3 ci engine. Roush Manufacturing's improved Cobra 2.3.
Enya .90 new technology four-stroker. Fun Fli 40 from Flite Line Products.
8 MODEL BUILDER New Standoff Scale Stampe SV-4 from Champion Model Aeroplane. New Askant R/C slope glider from Aeronautics, Inc. features all scale cut-outs, and tubing exits clearly marked. This sub can submerge while under power or standing still, it can dive, surface, and steer using a three-channel radio. It’s an ideal model for lakes or swimming pools. Don't worry about accidental submersion or loss of control as there is a built-in safety feature included in the design. The price of this T-Class sub is $425 including shipping in the U.S. (Cali fornia residents add six percent tax). Write to Sidney Cole, 1815 Sweetwater Rd., No. 51, Spring Valley, CA 92077 for more details or ordering information. ★ ★ ★ There’s a new R/C sailplane in the air Tatone Quadra 50 m uffler (No. 12615). Tatone Quadra 50 muffler (No. 12635). these days, and it’s called the Askant. slimmer-than-factory muffler which it for either inverted or upright engines. Intended for serious slope flying or claims will deliver a 200 rpm boost in Model No. 12635 (with side exhaust thermal hunting, the Askant is a 69-inch power. These mufflers are cast alu pipes) can be used on upright, inverted, span, swept wing glider of foam core minum and are designed to accommo or side mounted engines. Price is $26.25 wing and model epoxy-fiberglass fuse date the Tatone Losta Smoke system if each. Each muffler comes with two lage construction. The wings are balsa desired. Model No. 12615 can be used neoprene exhaust extensions and sheeted and can be ordered with an optional ballast-carrying spar which will hold 23 ounces of lead shot. Tail surfaces are also foam core with balsa sheeting for durability. Two or three-channel operation: aileron, rudder, and elevator. The Askant is available direct from the manufacturer at a special introductory price of $89.95 (regularly $119.95). Write to Aeronautics R.C. Sailplanes, 20291 Beam Circle, Huntington Beach, CA 92646. ★ ★ ★ Quadra 50 owners will beinterested in Tatone Products’ new, quiet, and
Oavis Diesel's miniature drill set (left) and drill i use (right). Fits in pocket.
Bantam Precision Products' 2.6 ci engine. T&D Fiberglass Specialties latest cowls, wheel pants, fairings, for Gee Bee R-1 and Snow White.
JUNE 1983 9
PAVE BROWN I
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Sally Brown puts the double whammy on this photographer. That’s Beautifully detailed sailing vessels in the scale boat display area. how Dave wins so many aerobatic contests! Schooner rigs are the prettiest!
Highly detailed rubber powered Boeing F4B-4 from Golden Era, by Morane Saulnier Al by Tom Polapink, Centereach, N.Y. Tom is 17 Golden Age Reproductions. years old. Nicely built and neat finish. void (otherwise known as demand) has social affair. Modeler and manufac many long-time modeling friends from not been created for the product, by turers alike enjoy the opportunity to the days when we were actively engaged trade show exposure or advertising, all rekindle acquaintances that may be in the hobby on the East Coast. It’s truly the distributor or dealer sales in the come alive only that one time each year. like “old home week.” Although the world will do no good, as the product Manufacturers get the chance to trade will back up in warehouse and dealer ideas, to compare notes, and sometimes Continued on page 97 shelves, and "die on the vine.” “ make deals" that are most satisfying. The trade show is important to the Spectators also renew acquaintances, modeler. It gives him, or her, the oppor see new products, get to study all types tunity to meet the manufacturer face-to- of models that fire up their building (and face, to ask questions, to make suggest- purchasing) urge, and can often take tions, to see the new products firsthand, advantage of “ Show specials” that make and then pass the word around .. . and the trip extra worthwhile. as in any special interest hobby or sport, This w riter particularly enjoys the the enthusiast grapevine of information WRAM Show (Westchester Radio Aero is faster than the speed of light! Modelers) in White Plains, New York Straightwing Stinson (SR-5 or 6 ) rubber scale Above all, the trade show is a great because of the opportunity to greet model by Golden Age Reproductions.
S. Newhouse built this Sikorsky US 300 helicopter, based on Kavan Winnie Davis 13-foot Gull Wing, by John Hill, Yonkers, N.Y. Tissue Allouette mechanics. Weighs 7 lbs., Webra 40. and Coverall, 7 lbs., Enya 58.
JUNE 1983 13 w
Bob Boucher, Mr. Astro Flight, hands out nearly Black Sheep Squadron control line entries: D.H. 4. Fournier, P-26, Skyraider, Thunderbolt, $2,000 of goodies . . . something for everybody. Airacobra, P-40, Corsair .. . variety! The D.H. 4 took first, P-51 took 2nd. 9th ANNUAL Astro Electric Championships PART ONE By MITCH POLING . .. Our "Electric Power" columnist reports on the highlights of the entire 9th Annual Astro Championships. For special F/F coverage see Part II on page 62 of this issue.
• Where do you start when you are to R/C quarter scale? It’s like trying to Championships last February 5 and 6, writing about a contest that covers two cover a mini-Nats, and it is exciting! and after much agonizing, narrowed it days, with events ranging from U-control I shot six rolls of film at the Astro '83 all down to a measly 20 photos for the
Bill Young and his Northrop flying wing .. . Mike Charles holds his IBA 26 with which he Larry Jolly lofts his Astro 05 (cobalt) Elec- featured retracts. Future MB article. took 1st place in F3E. Geist 60 cobalt. tric u s (MB plan 3831). First place in 7-cell
14 MODEL BUILDER Larry Jolly demo'ed the Ishimasa Skylark EH1 electric helicopter between events.
Larry Blakely flew this beautiful Commodore Old Timer to second place in Open Class O.T. Geist 40 cobalt. Climbed almost as well as the Playboys, suffered a little in the glide (heavy).
Skylark details: twin 05 motors, eight sub-C cells, lightweight construction. Condor Hobbies.
Larry Blakley with his Commodore, a beautiful old timer with a Geist 40cobalt motor. This model climbed almost as well as the Playboy, and its takeoffs were beautiful, but it was larger and heavier, Larry Jolly and Roger Roth's pit area: two Honda generators, three car batteries, two Astro so it wasn’t as competitive in the glide. Flight AC/DC Auto Chargers . . . serious stuff! Models are Electricus (left) and Whistler (right). For sheer looks, though, the Commo dore is hard to beat. poor editor to try to cram into a few which is a fun sport plane, was not even Overall, I’ll have to admit that the magazine pages. I sure hope he can, vaguely in the running! The Leisure Playboy has performance that I would because that’s what the contest was all Playboy is it for performance. It climbs not have believed if I hadn’t seen it. And about, variety in spades! like a bandit, and glides forever. Larry to think that I had a kit at home waiting This was the best Astro contest yet, Jolly, the winner in both open and to be built! Gee, if only I had built it and I’ve been to most of them. The seven-cell old timer with his Leisure sooner! easiest way for me to tell you about all Playboy, had a beautiful thermal flight The present old timer rules allow a that happened is tostartchronologically, that lasted 20 minutes, and got a round 1-1/2 minute motor run for a seven on Saturday, with the old timers. of applause on the landing. He powered minute max. I think this will have to be The immediate and overwhelming his Playboy with an Astro 05 XL. changed, because the Playboy can easily impression I got from observing the old Mike Charles, who took second place max from this motor run with no thermals timers was that their performance has in the seven-cell class, powered his at all. easily doubled, maybe even tripled, in Playboy with a Leisure LT 05. Seven-cell sailplane was next, and by the last two years. My poor old Brigadier, Second in the open old timer went to this time the threatening clouds over-
Mike Charles took second in 7-cell Old Timer with this Leisure 05 Addie Naccarato's 1/4-scale Cub, modified from a Sig kit, was a very powered Playboy. Jolly took first with Playboy and Astro 05XL. attractive plane, and took second in R/C Scale. Astro 40 powered. JUNE 1983 15 Dave Katagiri flew this Super Suburban to Steve Manganelli raced this twin Leisure 05 to Scott Manning raced this Astro 05 (cobalt) third place in Aerobatics. Leisure 05 powered. 3rd in Pylon and 2nd in Aerobatics. powered Super Rat to first place in Pylon.
tricus is to launch it hard, and get it cobalt motors and the LT 50 motors are moving fast, then go up. Never let it slow special, and are intended for heavy-duty down, or the climb will suffer badly, but use. that shouldn’t be a problem if you lay off There were quite a variety of props the elevator. If you let it go fast, it will used in the direct drive class, from 7x6 to climb fast, and in 1-1/2 minutes, it is 8x4. nearly a thousand feet high. On this day, When the F3E class started its rounds, that meant ducking into cloud base. the skies really opened up, and it The Electricus made a joke out of the poured! F3E was postponed to Sunday, rules, which allows a 1-1/2 minute motor and we finished Saturday with an excel run for a seven minute max. Everyone lent dinner at a smorgasbord restaurant. maxed with it, and then flew stunt While we were at the restaurant, Larry patterns on the way down to get rid of all Jolly proposed the forming of a national the leftover altitude! The event was competition association for electrics. changed to man-on-man, which made it Hopefully this association would orga- a little more reasonable. The Electricus Kim Waddell poses with her third place Junior swept first through fourth! It is available Con tinued on page 88 F/F winner. Truant. Astro 02 powered. as a kit from Wilshire Model Center, for $44.95. If you want a competitive ship, go head had started to do their dirty work. for it. It does like speed, so don’t try to The sailplanes flew anyway despite float it around, and it will reward you occasional rain bursts, and some of them with super performance. nearly disappeared in the clouds! There There are other reasons besides air were some mutterings about "those craft design for the big jump in per Seattle guys and their rain,” as Dave formance, of course. Everyone was using Katagiri and I had come down from Sanyo cells, and they definitely put out Seattle for the occasion, leaving beauti more power, in a moreconstant manner, ful "California weather" behind in than the GE cells. There is no sag under Seattle! In spite of the poor weather, the load, and that is what contest per sailplane performances were fantastic, formance is all about. again, like the old timers, performance This year’s motors were drawing up to has doubled at least. 25 amps, which was unheard of a few The dominant sailplane was the Elec- years ago. The Astro cobalt motors and tricus, Larry Jolly's design, which was the Leisure LT 50 motors can handle this featured in the March issue of Model much current and use it. Don’t try this Builder (plan number 3831). This plane is on regular 05s though! The brushes will POTENT!!! overheat and the motor will never be Mike Charles' I BA on charge from a Modellbau The technique to use with the Elec- the same again. The brushes in the E lectro nic A S I3 charger. See te x t.
Roy Mayes' beautiful Astro 02 powered Dormoy Bathtub took first Jim Ogg poses with his Satellite 320. Took third in Open F/F. place in F/F Scale. Design is still practical for an ultralight. Powered by Astro 035. Thermals well, climbs well.
16 MODEL BUILDER By ERNEST HOUSLANDER, preface by BILL NORTHROP . . . The Plato (pronounced, play-toe) is an interesting flying wing for R/C com bat or just having fun. Plato is as easy to fly as it is to build.
• Here's another interesting and un Crescent pulse boxes! Obviously, a certainly not just another run-of-the- usual R/C model originally published in small-to-medium three-channel mill “ high wing cabin sport model. ” wen the now defunct American Modeler, modern radio will do the job now, along alias American Aircraft Modeler, alias with most any .19 R/C engine. We’ve "Plato” is the third of a series of saucer Hobbies For Young Men, alias Air Trails, indicated suggested hinge lines for designs employing the reflex wing alias etc., etc. rudder and elevator. Other than that, section. I had used the section with About a half dozen Platos were built everything can remain the same. some success on a Wakefield type and flown by members of the Delaware Well, we’d suggest one construction fuselage model "way back when.” But R/C Club shortly after it was published modification that would simplify mat for radio control and “ minus dihedral” in October, I960. All were flown using ters. Instead of trying to install the top this was something else again. In order single-channel Galloping Ghost (pulse and bottom cross-grain planking be to bolster my courage, a series of tests rudder and elevator), with engines tween the sides of the top and bottom were conducted with sheet balsa gliders ranging from K&B .75s, to Cameron and fuselage halves, trim another 1/8-inch of all shapes and sizes. These tests Veco ,79s, to Super Tigre ,23s. Devel from the sides and glue the planking to proved that the reflex section is a oped in an era when most R/C aircraft the outside, as is normally done in remarkably stable method of obtaining flown from grass fields had to be hand- building all-sheet balsa fuselages. lift. Still to be answered, however, were launched, the Plato had outstanding Incidentally, several of us in the the questions of scale effect when ground handling. It looked kinda comi Delaware club may have been among, if enlarged, higher wing loadings, and the cal as it hippity-hopped across the field not the very first, to fly R/C combat, necessity ruggedness for radio control. on takeoff, but it never nosed over or using Platos. With a crepe ribbon tied Plato I was a 24 inch saucer, high wing ground-looped, and landings were on, the model looked like a huge poly- design with the motor mounted above almost impossible to mess up. Always wog “ swimming” through the air. VVe the wing on an extension of the rudder, being dead-stick (Throttle? What’s did manage a few cuts, and fortunately, six inches back from the leading edge. It throttle? In those days, you (lew until the no mid-airs. Combat or no, it’s a fun was underpowered with an .074 diesel, engine quit and then landed. .. simple airplane. .. easy to build, easy to fly, and so an .09 was installed. This proved as that!), landing was just a matter of adequate to get it up "there, but it was aiming the model at the landing area simply too groovey. It would fight a turn and controlling glide speed (and dis and use up about 250 feet in a circle. I’ve tance) with the elevator. Even at full up laid this one aside for future use from my stick, the Plato would just flatten out and rocking chair. land with almost no run-out. About this time the Pee Wee .020 lust one problem .. . with the stick all motor came out and provided the the way back, and the model flying nose inspiration for Plato II, an 18 inch saucer. high, directional control was sluggish at It was a high wing design but this time best, as the rudder was blanketed by the the engine was in its normal position in huge wing platform. But no big deal. . . the fuselage. The weight, 14 oz. overall, let the stick move forward to neutral made the wing loading a little high, but it elevator (slightly up, to follow the was much more nimble than Plato I. normal shape of the reflex airfoil) and The first two designs proved the effi the nose would drop, speed would pick ciency and strength of the reflex section. up, and full directional control would It remained to improve the service return. ability and simplify the construction so The original article is reproduced as that it could be built with the minimum first published, as a matter of historical amount of time and effort. information, but please remember how To achieve this, Plato III was built. The long ago it was written. Don't send wing was lowered and a hatch provided letters asking where to buy Mighty Ernie Houslander, Guelph, Ontario, Canada, Midget motors, ESSCO receivers, and poses with his R/C platter, the "Plato". Continued on page 64
JUNE 1983 17 1/4 SQ. BALSA 1/8" SHEET
1/8" SHEET
TOP DECK
BOTTOM DECK
1/8" PLYWOOD
CANADIAN SAIICII
1/8 PLYWOOD
4» RIGHT THRUST
HARDWOOD ENGINE MOUNTS
REMOVABLE HATCH ^ 1/4"X 3 /8 " HATCH STIFFENERS | / 8 “ SHEET TOP
PLASTIC CANOPY INSTALL DE BOLT FUEL TANK / ^ SLIDE SWITCHES M,M· ACTUATOR .15 CU. IN. ENGINE RECOMMENDED
RECEIVER COMPARTMENT
TOP DECK
BOTTOM DECK II BATTERY c o m p BALSA 4- BLOCKS
3/16 DIA. DOWELS REENFORCE NOSE REMOVABLE WITH CRINOLINE HATCH 1/8" SHEET SIDES 1/8 PLYWOOD 1/8 SHEET BOTTOM 2” 1/2"DIA. WHEELS
18 MODEL BUILDER JUNE 1983 FULL SIZE PLANS AVAILABLE - SEE PAGE 98 19 L.iquna Hills, CA 92653
MISCONCEPTIONS sive” will likely lead readers to the One of the nice things about writing conclusion that explosions do occur this column is that it provides me with an within the cylinder walls. opportunity to pass along information Now, I'm not saying that explosions about misconceptions and such. Mis never occur in thecombustion chamber, conceptions abound in our world. For they sometimes do, but then it’s called example, you’ve undoubtedly heard detonation! As we shall see later, that’s that the moon is made of green cheese. not a very desirable condition. Actually, it’s a slice of a very large, green First, however, it is important to tomato. define our terms so that we can come to Well, in modeling we also have our a clear comprehension of what is hap fair share of misconceptions, and there pening when an engine is running seem to be plenty of them about en normally, and also when detonation gines. A popular one, that came up again occurs. Understanding these things is in two recent conversations, concerns also essential for anyone interested in those so-called “ explosions” in the increasing engine performance. combustion chamber which cause the COMBUSTION During normal operation.glow element initiates power stroke of our engines. The honest Simply stated, combustion is a burn the combustion of fuel mixture. misconception is that an explosion does ing process. More explicitly, it is a occur... Wrong! chemical process that is accompanied by described as the cackle of frying eggs. If Weil, should we point fingersof shame the creation of light and extreme heat. you only like your eggs soft-boiled, you at anyone who believes in the explo Typically, it isa vigorous, but not violent, may never recognize the sound. sion? I don’t think so, especially when I union of substances with oxygen. COMBUSTION/WORK SEQUENCE consider how some "experts” tend to DETONATION Although I don’t have a personal mislead laymen by their often poor or Commonly, detonation is a violent series of photographs, let me assure you imprecise choice of words. For example, explosion. In an engine, it is very irregu that very high speed photography inside consider one popular book, Small Gas lar combustion. More technically, it is of a combustion chamber has been Engines, written by two university pro abnormal, extremely rapid combustion. accomplished. These photographs,com fessors (1978). In the fundamentals It replaces, or happens simultaneously bined with the considerable volume of section of the book, they made state with, normal combustion. It is usually scientific data available in the areas of ments such as, "Atomized fuel exposes a manifested by a loss of power, over temperature and pressure, provide us large area of fuel which, when ignited, heating, and rough running of the with a clear understanding of the com- releases heat energy with an explosive engine. In our automobiles, another bustion/work sequence. With the help force.” Onesection, intended to explain very noticeable, common characteristic of a few illustrations, let’s review it. the conversion of energy to work, was is engine knocking or pinging. In model In the first drawing, a piston is moving even entitled, "Explosion Must Be engines, it is not quite as easy to hear upward and compressing the fuel/air Contained.” The unfortunate choice of detonation. When it is detected, it words such as “ explosion” or “ explo- usually sounds like what has been Continued on page 65
4
C om bustion is alm ost com plete as the piston Increased pressure from combustion pushes Abnormally high compression can lead to de passestop dead center in normal operation. piston downward on the power stroke. tonation before normal burn is complete.
20 MODEL BUILDER A second-story, interior view of the Orly airport near Paris, France reveals large kites suspended from the ceiling, and a Blériot. "Why use a 737 when you can fly by Blériot?" says Ron Moulton.
Claude Weber launches the Eiffel tower! Tether WHAT A WAY TO and bridle lim it altitude of push-puller. RUNAN AERODROME! By BILL HANNAN . . . From the pen of the famous Hangar inhabitant comes this unusual feature about a special exhibition in France, based on a report by Ron Moulton and Georges Chaulet.
• What ever happened to the TOTAL entertainment stars, and a trip to the corridors into a tube as though the AVIATION concept? Back in the "good airport was an exciting experience to be external shape of the aeroplane was an old days," aviation was promoted as a enjoyed by the entire family. embarrassment. . ." package .. . encompassing every pos Today, unfortunately, most airports Happily, there are exceptions to such sible form of interest, including models, operate more like bus terminals, dedi dull airport routines, and at least a few balloons, parachuting, airships, and cated only to the promotion of rapid far-sighted people are trying to reintro gliders, as well as "regular” aircraft. transportation. Think about it . . . while duce aviation’s magic to the public. Stalwarts such as Katherine Stinson, constantly decrying shrinking profits Thanks to reports from Ron Moulton Lawrence Sperry, Charles Lindbergh, and diminishing passenger lists, very and Georges Chaulet, we can gain a and Amelia Earhart left no stone un little is attempted to capitalize on the tantalizing glimpse of one such exposi turned in their constant efforts to glorify marvelous nature of the aircraft them tion. Orly is an international aerodrome aviation in all of its aspects. Pilots were selves. As Ron Moulton so aptly put it, located near Paris, and although it is less treated with awe and respect equal to today’s passengers are "force-fed down familiar by name than Le Bourget to
A showcase full of prop driven airliners carries Construction demonstrations for kites and Another showcase of antique, stamped metal out the international theme of the Orly show. model hot air balloons typified Orly's variety. toy aircraft attracted the attention of collectors.
JUNE 1983 21 Emmanuel Fillon flew these intriguing turbine engined Flying Fools airplanes to first place.
Americans, it has a long and historic background. Emmanuel Fillon, winner of the Wakefield Cup for 1937, now specializes in small models. Here Beginning on December 15, 1982, he poses with two of his "je t" powered aircraft. Georges Chaulet photo. Orly played host to a month-long total aviation presentation, with both of its gines (including a Wright brothers were duration types, Peanut Scale types, terminals devoted to flight in all its design and a WW-I Hispano-Suiza), as and a special “ Fou Volant” (Flying Fools) aspects. For kite enthusiasts, there were well as a profusion of photographs and category which attracted the most out colorful examples from French and posters. rageous of the French unorthodox lapanese collections on view, plus a How about full-size aircraft? On hand models. For instance, Georges Chaulet, ‘‘how to” workshop in action. For were a reproduction Blériot, a Deper- well-known for his sense of humor, philatelists, there were rareand valuable dussin and Latecoere 17, plus an original entered a highly-detailed scale model of stamp and postcard collections. For Spad VII. Of later vintage were the North the historic Breguet-Dorand Gyroplane, modelers, models of every type were on American AT-6, the Beechcraft 18, and a which incorporated contra-rotating view, including free flight, control Soviet 1947 Antonov. rotors. Ron Moulton saw it this way: line, radio control, and even wind Even the airport restaurants and bou “ Georges had the crowd laughing each tunnel specimens. tiques joined in the spirit of the festival, time he released, the fuselage remained For the balloon aficianados, priceless by offering special "Dream of Icarus” on the ground, and the blades went up antique memorabilia such as Napoleon's menus, chocolate balloons, and sugar to the ceiling!” coronation baloon documentation, cubes decorated with Bleriots, Spads And this impression from Georges, movies, and a nacelle in which they and Moranes! himself: “ There were plenty of piques could pose for instant photographs. But the piece de resistance for model (nose dives), wall strikes, and loops. But Bonuses consisted of displays devoted to builders was the 10-hour long indoor eventually we didn’t care, because this is parachutes, helicopters, aircraft en- contest, which took place in the Orly part of the fun. If all of the models would departure hall, much to the satisfaction fly perfectly, the meets would be quite a of the enthusiastic spectators. Flown bore." It was not the ideal place to fly
Monsieur Landeau's Flying Fool entry was this "U-boat" complete with conning tower and This delicate Avro triplane Peanut was regretfully crushed by a trunk (equipment box, not tiny 5-bladed prop. Moulton photo. elephant). Fillon photo.
22 MODEL BUILDER This original Spad V II figured prominently in the display of full-size Here are tw o of Claude Faix's remarkable series of large controlline aircraft shown at Orly. Moulton photograph. scale models. Incredible detail is evident. R. G. Moulton photo. indoor because of the low ceiling, and trestle tipped over, the trunk fell, and demonstration which doubtless created the onlookers on the floor and in the the poor triplane was underneath! a powerful and favorable impression balcony. Every time a model headed Happily, Fillon had manyother models upon the public, the air transport in toward the people, the owner would to fly. and he won First Prize in the Flying dustry, and all participants. shout, "Ne touchez pas a I’avion!” Fools class with his rubber-powered IET How about it, airport managers in (“ Don’t touch the airplane!''). models. These ingenious creations had other parts of the world, isn't there an Happily, most models did survive . . . squirrel-cage type fans for propulsion important message here? · but not one,an English triplane belong which were driven by rubber motors ing to Emmanuel Fillon. He brought a running spanwise along the wing lead large and heavy trunk to Orly in which ing edges. he transported his models and asso We offer our congratulations to or ciated accessories. He had positioned ganizer Phil LePage and the various the trunk on a sort of trestle at a con special interest clubs who combined venient height. Unfortunately, the forces to produce this most memorable
e Georges Chaulet's intermeshing rotor autogyro achieves proper blade separation via a simple This Pottier 100 in Peanut Scale was construc music wire drive system. Photo by G. Chau let. ted by a junior model builder. Moulton photo.
Two more of Claude Faix's C/L scale models which were on display Georges Chaulet's highly detailed 1935 Breguet-Dorand Gyroplane at Orly. Ron Moulton photo. was a crowd pleaser. Rotor flew, body remained on floor!
JUNE 1983 23 Slope combat fliers Alex Bower, Joe Wurtz, and Gary Ittner dice it out over the Malibu Mountains. Indestructible fuselages and inexpensively replaced wings are the keys to a good time. Mid air collisions are part of the fun.
competition. The object here, as with all competitions, is to rack up as many oints as possible. This is accomplished Cy attacking the streamer attached to R /c SOARING your opponent’s glider. One point is By BILL FORREY PHOTOS BY THE AUTHOR earned for each and every “ cut” you make on an opponent’s streamer. What could be more simple? • I think it would be fair to say that for couldn’t be made to move (as in motion Ah, but there’s a twist! If you acci the most part, R/C fliers do not like to fly pictures), because not only would they dentally come too close to an opponent’s their airplanes too close to the airplanes paint thousands of words, they would combat plane and actually touch it or of other R/C fliers. Visions of mid-air excite you and thrill you, perhaps even crash into it, you are awarded a penalty collisions come to mind when two to the point of audible laughter and point . . . one point is taken away from aircraft appear to be occupying nearly cheers. Slope combat is an emotional your running total. So, slope combat is the same airspace at the same time. It sport. not as easy as it might seem. Negative might also be safe to say that avoiding Those who fly slope combat quickly scores are possible in slope combat those situations has become an auto become fanatical promoters of this fast- rounds. matic reaction for most pilots. Normally paced, adrenaline-packed facet of R/C The streamer, which becomes the this is a healthy and safe habit pattern to soaring. The reason for this behavior is center of the pilot’s concentration in the have developed within you . . . except simple . . . second-for-second and min- aerial melee, is actually nothing more when you are flying SLOPE COMBAT! ute-for-minute, slope combat offers exotic than common recording tape If you’ve never heard of slope combat more thrills and excitement for both from a cassette. The rule of thumb is to before, you probably have a pretty good participant and spectator alike than any attach a length of magnetic recording idea of what it's all about from looking at other form of R/C soaring. tape equivalent to seven times the the various pictures on these two pages. WHAT IS SLOPE COMBAT? wingspan of the model it’s being at It’s really too bad that these pictures Slope combat is a type of R/C soaring tached to. This streamer is then fixed to
Mid-airs are seldom fatal to Cheetahs. Just fly The stab may be knocked cock-eyed, the fin Mike Regan makes a perfect "cut" from below 'em out or pick 'em up and throw! may be hanging off, but the Cheetah still flies. Alex Bowerc' Cheetah.
24 MODEL BUILDER Joe Wurtz. flying the big airplane on the right, spoils a perfect setup for Mike Reagan on Gary Ittner's tail. Both airplanes fell to the ground, receiving negative points for their head-on collision, then were picked up and flown immediately.
Jerry Krainock and Gary Ittner measure off seven lengths of recording tape over Alex Bower's Cheetah wing while Alex looks on probably thinking, "Hey, that's too much, guys!" honorary SFVSF member and club receiver are wrapped in foam rubber genius, came up with the idea of making and stuffed into the nose of the fuselage. an inexpensive, almost indestructible, The fuse is canopy-less, so access is aerobatic little slope soarer which could through an opening in the wing saddle. be mass produced, and used specially There is no way for your radio to fall out, for combat. It wouldn’t matter if it was get smashed by a collapsing nose, or get Shouts, laughter, and animated gestures are all part of the fun for spectators. mid-aired, flown directly into the jarred by a hard landing. With this kind ground, or otherwise mistreated, be of protection, you can see how combat the rudder or fin by means of adhesive cause of its durability and relative low fliers can "loosen up” and fly daringly. tape. Believe it or not, thestreamerdoes cost. It was (and is) called, the Cheetah, All flying surfaces are foam core. The not significantly hinder the flying capa and for about $35, you couldn’t go preferred sheeting material is Chrome- bilities of the model: the pilot will hardly wrong. coat which is a thin, glossy, tough, know it’s there. The Cheetah fuselage is made of rota- inexpensive, white cardboard material I first learned of this incredible de tionally molded, cross-link polyethylene that is used in theprintingof postersand parture from the standard, monotonous plastic . . . the same stuff plastic trash other litho art. A similar material called five-minute thermal contest through my cans are made of. This is the most Plasticoat comes in colors. The best involvement with the San Fernando important feature of the Cheetah design method of adhering these two materials Valley Silent Flyers, an innovative, pro because of the very real need to protect to the foam core panel is with Hi John gressive, sometimes controversial club radio equipment from the abuses of this son Supertape. Supertape is a high-tack in the Los Angeles area. Bill Watson, an type of flying. The battery pack and adhesive transfer tape that is very light
JUNE 1983 25 Late info sent to us from Michael Selig indi Cl ______cates that the E-205 was actually the Sagitta 1.0- 900 airfoil which is very close to a true E-205. »•P-\ US \ The MB-253515 is the airfoil used on the Gemini M.T.S. Smoothed out coordinates for Re = 135,000 Cl /Λ the MB are below (rounded to four digits): CL«< \ X: 1.000 .9000 .8000 .7000 .6000 .5000 f turto Y: .0000 -.0107 -.0214 -.0317 -.0404 -.0466 .5 - E -2 0 5 -0.5 us Cm X: .4500 .4000 .3500 .3000 .2500 .2000 0.10- mrb —/ Y: -.0487 -.0500 -.0505 -.0503 -.0489 -.0462 LS / ' CM* \ X: .1500 .1000 .0750 .0500 .0250 .0000 Y: -.0417 -.0347 -.0300 -.0246 -.0180 .0000 oC X: .0250 . 0500 .0750 .1000 .1500 .2000 XJ. Y: .0264 .0407 .0527 .0630 .0784 . 0886 IS ^ ^ .010 \ .015 .020 CD Chord 10 X: .2500 .3000 . 3500 .4000 .4500 .5000 1 - / \ x \ Y: .0947 . 0979 .0990 .0985 .0960 .0917 X: .6000 .7000 .8000 .9000 1.000 Y: .0785 .0608 .0408 .0203 .0000 For additional 32 plot points send SASE to Bill Forrey, c/o Model Builder. NOTE: Theoretical data for airfoils under 250,000 Re are rather inconclusive without supporting wind tunnel data. you’d like to get in touch with him about a Cheetah, write to: Bill Watson, 6736 Aldea St., Van Nuys, CA 91406. If you are a cook 'em yourself type erson, there are other ways to go to get Casically the same thing (however, none weight and very strong. There are other of the Cheetah, be prepared to make are as easy or as inexpensive to make as adhesives that could be used, but this is anti-vortex wing tips and rounded tip the Cheetah). the best. blocks for the tail surfaces. First of all, I would recommend a The wing structure consists of two 1/8 The size of the Cheetah is perfect for fuselage similar to the Cheetah’s for its X 1/4 spruce spar caps (no shear webs, the fast-paced aerobatic nature of com indestructibility. Bob Martin R/C however),a spruce leading edge,a balsa bat flying. I’ll give you thedimensionsof Models produces several unbreakable trailing edge, and 1/4 x 1 tapered trailing the main flying surfaces and fuselage of polyethylene fuselages which are called edge stock for the strip ailerons. the Cheetah to give you an idea of how Duralene replacement fuselages. I The horizontal stab is the essence of big the design is: wingspan, 48 inches; would recommend either a Wanderer simplicity: balsa leading edge, trailing wing chord, nine inches; stabilizer span, or a Katie II fuselage for slope combat. edge, and 1/4 x 1 tapered trailing edge 20 inches; stabilizer chord,5-1/2inches; They are both a little longer than the stock for the elevator . . . all covered fin height, seven inches; and fin average Cheetah fuselage and can accommo with Chromecoat (that is, all except the chord, 4-1/2 inches. The fuselage is 36 date longer wings. elevator which is either painted, covered inches long. The Cheetah airfoil is one of When you have made your choice of with Monokote, or left bare). Bill’s own 12 percent jobs with a little fuselages, I recommend that you order The fin is nothing but foam core with reflex in the trailing edge for improved foam wing and stab cores from Hi an optional balsa leading edge strip. stability. Johnson Model Products. Write to HJMP After shaping the L.E. and lightly sanding The last I heard, Bill Watson was still at 11015 Glenoaks Blvd., Pacoima, CA the foam core, the fin can be covered producing Cheetah kits and parts. The 91311 and ask for their catalog, believe with Chromecoat, and butt glued to the rice has probably changed since I me, the catalog is worth every bit of stab. Cought my Cheetah three years ago, but the $2.50 it costs. It is more than just a If you want the best performance out I don’t suspect it has changed much. If Continued on page 84
26 MODEL BUILDER Ν ELECTRIC POWER By MITCH POLING
• Bruce Klees, who sent the charging circuit for the Leisure digital charger (Model Builder. January 1983), asked me why I hadn't said anything about elec tronic throttles. That was a good ques tion! My answer was a simple one . . . I hardly ever use them. I have been flying two-channel gliders, old timers, and sport planes, and somehow these never seemed to need anything more than on- off. However, there are definitely times when an electronic throttle would be good to have, especially with scale planes or seaplanes. I plan to use them more in the future, especially now that I have the book on electrics done, fin ished, and sent to Kalmbach. (Hooray!! Lyrae Klees poses with her father's first elec Writing books takes twice as much time, Bruce Klees' daughter, Lyrae, holds the High- Lo Evolution. Astro 15 powered. tric, a Wanderer. Still flying at 5 yrs! and twice as much energy than you think you have!) So, some scale projects is hanging in the Anchorage (Alaska) 18 black and orange) go to the motor; will definitely be on the way, as well as House of Hobbies for all to admire! and a third set of three wires (red is +4.8 some scale seaplanes. I will be using Fortunately for me. I have never built volts, black is ground, orange is signal) electronic throttles. that well, so all mine wind up getting goes to the receiver. No connectors are In the meanwhile, I asked Bruce to tell flown! Sometime you ought to fly it supplied for the power wiring, but a me of his experiences with them,and he Bruce, it looks good just standing still,so receiver connector of your choice is was more than kind . . . he sent me a its got to be good in the air. Anyhow, supplied. mini article! Such readers are the joy of here is Bruce’s report on electronic “ The ET-3 will work with any positive every columnist. Before I let Bruce have throttles, which he entitles, “ Fly with ET” pulse radio, and uses a standard one to his word, though, he also sent photos of (electronic throttle). two millisecond pulse width at any his planes, so let's talk about them first. "Five years ago Mitch Poling visited frame rate. Pulse widths less than 1.1 ms The Wanderer, held by Lyrae Klees, is Anchorage and joined our group for turn the throttle off, and pulse widths Bruce's first electric (built five years ago) several building and flying sessions. As greater than 1.8 ms provide full power. powered by an Astro 05, and still actively none of us had ever seen an electric The unit draws nine milliamps regardless flying . . . I know the story, “ electrics last powered airplane before, we were very of throttle position. According to the forever.” I have an incredible assort impressed with his “ Electric Drifter” and instructions, the ET-3 will output over 25 ment of planes (can't bear to let any of the tiny “ Request” (020 old timer). I amps at any motor voltage from 4.8 them go) just for that reason, with no think I was the most impressed because I through 36 volts with a very low voltage vibration, fuel, or oil to deteriorate promptly bought an Astro 05 and a drop. I have used my ET-3 in the Astro 15 them, they are ageless (barring crashes!). Wanderer kit, and began learning about powered Porterfield, an Astro 10 pow The Porterfield, held by Cathy Klees, the wonderful world of electrics. ered Electra Fli, and an 05powered Velie was Bruce’s first scale project, and uses “ About two years ago, I bought my Monocoupe. the electronic throttle. Bruce did a nice first electronic throttle. . . a Vantec ET-3, “ The second unit is currently in an job on the Porterfield (an Astro kit), as to put in a Porterfield that I was building. Astro 25 powered Bushmaster, and will shown in the framework photo. This is a This ET-3 proved to be one of my better soon migrate to my quarter scale Velie good design, it flies well, and is my next purchases and is the subject of this Monocoupe (to be powered by the scale project, too. Maybe I’ll put mine article. same Astro 25 with a speed reducer on floats! "The ET-3 is a small aluminum box turning an 18/10 Top Flite prop). Bruce's masterpiece is the T-tail High- measuring 2 x 2 x 1-1/8 and weighing a "About six months ago I stalled the 25 Low Evolution kitted by Dumas. It was modest 1.8 ounces. It has three sets of by running it wide open into a bush. built to take an Astro 15, but after Bruce wires coming out of its sides: one pair of Besides the structural damage, the ET-3 built it, he decided it was too pretty to fly wires (No. 18 green and white) go to the (the dangers of building too well!), so it motor battery pack; a second pair (No. Con tinued on page 65
Cathy Klees holds the Astro Porterfield. This Astro kit is powered by Lightweight structure is evident on this Astro Porterfield. Looks like Astro 15 motor. Flights are very realistic. this would be an excellent first scale model, very simple.
JUNE 1983 27
Beautiful M ultiplex ASW-22 features epoxy fiberglass fuselage, 157-inch wingspan. Robbe-Modellsport Argo is coming to U.S. NURNBERG TOY FAIR FEBRUARY 3-9,1983 By ELOY MAREZ . . . Our "Electronics Corner" columnist takes a short busman's holiday to Germany to cover the world A 1/3.24 scale Diabolo for 15 to 50cc engines, famous phenomenon that the Nuremberg Toy Fair has be from Simprop: span 76.5 in., weight 17 lbs. come. Take a ride on a 747 with Eloy . . . • The Nurnberg Toy and Hobby Fair, Frankfurt. The city is rich in history, with assemblies and gatherings, and here, the described as the world’s largest, can only a still-standing castle which dates back infamous Nurnberg Laws restricting the be further described as the world’s most to the tenth century, and numerous rights of German Jews were enacted. impressive. How else can you speak of ancient cathedrals and buildings non Ironically, it was also the site of the trials an event of this type which takes place in chalantly intermingling with thoroughly at which many of the same Nazis had to twelve separate, interconnecting build modern architecture. The first German answer for their actions. This was my ings, with a total area of 750,000 square railway ran from Nurnberg, to Furth, in second visit to the city, which I have feet (of which 600,000 is display area) any 1835, and what may have been the found to bean interesting one that is full one of which is at least as large as that world’s first watch was invented here of friendly people. It is a place where the housing any U.S. show? How else can about 1500. The city also featured medieval and the modern blend into a you refer to an event, any event, strongly in more modern times, having perfect, most delightful mixture. where 1762 manufacturers display their been the site of many early Nazi party Getting there is half the fun . . . wares, and where 38 countries are Lufthanza, the German Airline, lifts you represented? This then, was the 34th out of Los Angeles in one of its white and International Toy and Hobby Fair; which blue 747s, and only ten hours later, after was attended by 40,000 industry buyers you’ve had dinner, seen the movie, (not open to the public); which was held napped a while, and had breakfast .. . in the Bavarian City of Nurnberg, West ou land 5787 miles away in Frankfurt. I Germany, February 3 to 9, 1983; and now some of you younger Jet Age which was my privilege and pleasure to readers will do a double take on that attend. “ only ten hours” remark, but having Nurnberg (Nuremberg), with its half made the same trip in C-54/DC-4s in the million inhabitants, is the second largest early days of my Air Force career (which city in Bavaria, and is one of the oldest then took four days), ten hours is a cities in Germany. It lies on the Pegnits matter of amazement to me. Frankfurt is River, 92 miles northwest of Munich, the hub of all travel in and out of Aero Model Technik King 100: lOOcc dis Germany. You get to spend two hours in and 120 airline miles southwest of placement, 8 h.p. at 7500 rpm.
JUNE 1983 29 Webra’s new 4-cycle engine, the T4-40. It’s a 6.5, rated for a 10 or Two new HP engines. The VT-21 is available now, the VT-49 later 11x6 prop at 11,000 rpm. Weighs 12.7 oz., power is .8 hp. this year. A V-twin version will be out before too long.
The Jupiter 4-cycle engines come in single and horizontally opposed tw in versions, 37 cc dis Solo HM47LE from Kleinmotorenbau S. placement. The twin turns an 18x 10 prop at 7300 rpm. Miadowitz comes in 35, 47, 81cc versions. its airport terminal, a virtual city in itself: organized it is, to the nth degree. Within which is a Nurnberg specialty. It is all three stories of shops of all kinds includ the fair complex, in addition to the there, including a special room for ing a supermarket, many restaurants, normal admittance, food, and sanitary Mothers-To-Be, of which I didn’t get movie theaters, and even a train station facilities necessary, you will find accom any further details. in the basement. You then catch a modation, banking, and car rental ser The extensive organization and plan Lufthanza 737 for the one-hour flight to vices. You can make airline reservations, ning is further evident in the physical Nurnberg. get your hair done, or buy flowers for arrangements within the fair buildings. The “ Messezentrum” , the Fair Cen any deserving friend you might make. As mentioned, there are twelve separate ter, is located a short distance from the There is a Foreigner’s Meeting Point, buildings, all of which are connected by heart of the city. It is situated close to with free linguistic and writing services, corridors which are clearly marked with federal highways, and is serviced by a and for the press, there is a complete color codes and pointing hands so that subway from the airport, by busses and center with all the facilities. You can mail navigation is not a problem, whatever taxis, and even helicopters. At the center a letter, make a phone call, send a Telex, your mother tongue might be. Displays itself, there are immediately adjacent hire a photographer, get photostats within the fair are divided into seven parking lots for 10,000 cars. made, or talk to a policeman if the need categories, each of which is assigned a The organization of this event is done arises. You can get food of all sorts from color and hall letter. For example, by committee, under the direction this a complete sit-down meal, to a package "Model Construction and Hobby Craft” year of Dr. Benno Korbmacher. And of Lebkuchen, thedeliciousgingerbread were coded brown, and located in Halls
Glow engine off-road racers are very popular in Europe. This one is Baracuda 470 from Dieter Schluter comes in two versions for elec- the Enduro 84 x 4 Competition chassis by Yankee of France. trie outboard up to 8 volts.
30 MODEL BUILDER Lockheed Super 286L helicopter, for Kavan mechanics. Designer Helimax 40 from Graupner, for .40 engines (.60 for experts). Rotor and flyer, Manfred Heid, poses with the wood and plastic kit for .60s. span 45 in., 7 lbs., uses Bell-Hiller system with collective pitch.
This impressive YAK-50 (for 15 to 50cc) is kitted by Topp Modelle. It boasts a wingspan of 80 inches, length of 68 inches, and flying weight of 15.5 lbs. least that many model companies. How Simprop location, we found a smiling, ever, that is not exactly a true picture, as carefree-appearing Hanno Pretner, there is a multi-product area in two halls, different from the business-like flyer we for companies whose products fall into see at Las Vegas, who was telling the more than one category. world about the wonders of the Simprop Then there were some nationalistic radio. Seeing what he has done with it, groupings. For example, there were two there should not be any doubt that it Israeli model companies located within works extremely well. Powermax radial three, 45cc, 4-cycle overhead a group of exhibitors from that country valve glow plug engine. V-twin also. Continued on page 66 whose interests were outside of the L & P. All printed guides, signs, letters, model area. Even Carrera, one of Ger etc., referring to that subject were in that many’s largest hobby manufacturers was color, all easy to understand and easy to located outside the brown area, prob locate. In addition, there was available a ably because of its apparent interests 614-page guide, which listed alpha outside the model field. I’m sure there betically all of the companies present, were over 250 strictly model manufac and pinpointed their location within a turers represented, including many hall, aisle, and stand. Another guide was which are household words here in the available with line drawings of each U.S., like Kavan, Webra, HP. Schluter, individual hall, with each company's OPS, and others. Naturally, all of the location within the hall. My guide shows European big guns were there; Graup 224 "brown” locations, indicating at ner. Multiplex, Robbe, and down at the
GraupnePs 1/5th scale Stolp Starlet for Standoff Scale competition. Power source is .25 2-cycle Would you believe an R/C wind surfer with or .40 4-cycle engine, weight is 4.8 lbs. wetsuited beach boy? Gundert Sportmodelle.
JUNE 1983 31 To order full printssize of this drawing, ad on 87.see page MODEL BUILDER
CM CO CATHODE ENDS F L A T EDGE EPOXY \ F COLOR I P LA S T IC ENVELOPE V 11 HIGH BANDS ENVELOPE λ POWER 1 ZENER OR V EjL I RECTIFIERR /L C A T H O D E \ t ZENER COMMON LED T CERAMIC? u METAL ANODE ANODES DIODE GLASS BEAD CAN ENVELOPE T PHYSICAL APPEARANCE ELECTRONIC SYMBOLS
Diodes come in many shapes and sizes, all of them are polarized and must be properly installed.
using the same features of the Zener diode described. The circuit uses a minimum of parts: use 1.5K for R-1, 680 Electronics Comer for R-2, and a Radio Shack 276-2009 for By ELOY MAREZ the transistor. For D-1, use a Zener with a voltage rating .75 volts lower than the E.S.V., O.M.T. (ONE MORE TIME) the Zener, whose primary function in desired tripping voltage. For example, Mr. John G. Klooz of Haslett, Michi life is to provide voltage regulation at its the 5.1-volt 1N4733 mentioned would gan, writes: rated voltage, within its wattage rating. cause the LED to extinguish when the "I have two boats, one of which has a In order to do so, it will not conduct until applied voltage was reduced to 5.85 GE 12-volt 2.5-amp battery, and the the applied voltage reaches or exceeds volts. other a Dumas six-volt, five-amp battery. said rated voltage, a feature which we The circuit can be left attached to the I think they are both lead acid batteries. use in E.S.V. circuits. Voltages lower than battery continuously, however it will Your circuit for an Expanded Scale the Zener voltage simply do not go draw 15 to 20 mils, depending on the Voltmeter should be perfect for check through, thus no indication on the applied voltage. If this is too much for ing the 12-volt battery, but I would meter. The top end reading is controlled your application, insert a pushbutton greatly appreciate it if you would 'plunk' by the resistances in the circuit, while switch in either leg of the source voltage in the values on my enclosed sketch for the pots compensate for the tolerances which you can activate anytime you wish building an Expanded Scale Voltmeter involved. to test for the proper voltage. for checking the six-volt battery. (Maybe As you mentioned (and which I think DUAL HEAT SOLDERING IRON I could use a switch for changing from is a good idea), a dual range meter could I have previously mentioned the one voltage to the other using the same be assembled, using the same meter importance of using the proper solder meter movement.) movement. Of course, as different ing iron for the extremely small compo "In addition, please send the Popular calibration is required for each range, nents and printed circuit boards we use Electronics charger article you men you have to switch more than just the in R/C equipment. Too much heat can tioned. Zener, and after looking at it, the easiest be disastrous in many ways. For a lot of "I know this is asking a lot but I've thing to do is switch only the meter itself, my work, I use a 12-watt iron, and even never come across anything to check per the enclosed sketch. that is too much sometimes, such as out these batteries so I'd like to take Calibration will be necessary, of when working on small crowded servo advantage of it." course, and here you can use your 12- and receiver boards. John, the P.E. information is in the volt battery, with a 500-ohm pot con If you have an iron that you feel is a bit mail enroute to you, and don’t worry nected across it, as a voltage divider. much for the job, there is a simple and about “ asking a lot” , the idea of the You'll need a voltmeter to read the inexpensive way to tame it down a bit, by whole column is to be a meeting place output voltage, and you must remember about 30 percent. Simply add a diode and an information exchange for us to set the voltage with the E.S.V. con somewhere in the AC line! What hap tinkerers. nected, as the changing load actually pens is that the diode only conducts on Converting the E.S.V.tosix-volt opera determines the output. A similar circuit every other cycle of the alternating tion could not be simpler . .. you have could be used to calibrate the 12-volt supply voltage, which results in an only to substitute a 5.1-volt Zener diode, E.S.V. though in all cases you will need a average effective remaining voltage 70 such as 1N751 or 1N4733 (Radio Shack battery voltage higher than the highest percent of what was applied. No. 276-565) for the one used originally, one you intend to set the E.S.V. to read. The diode should be at least a 200- recalibrate to the new values that you In your case, you could hook up your six volt-unit, and capable of carrying the wish to read using five volts as the and 12-volt batteries in series, and use a necessary current. Remember that cur minimum, and seven or eight as the 1000-ohm pot in place of the 500. rent consumption is equal to the watts maximum. How about an LED monitor for the As you have gathered, the secret is in batteries? It is also relatively easy to do, Continued on page 69
TO VOLTMETER +
T
VARIABLE O U T PU T
This simple variable voltage supply is to be used for calibrating E.S.V. LED battery monitor which can be tailored for different voltages by circuit. See text for valves and instructions. proper selection of the value of the zener diode, D1. JUNE 1983 33
5. This Douglas DC-3 won the control line Standoff Scale event. 6. This is control line at its simplest. Unidentified flying youngster readies his Navy profile racer. seem to delight in looking over the pub . . . what happens but a truckload of Bright and early the next morning we models. This time, I got lucky. It seems my favorite Australian beer (Carlton) all hustled over to City Hall. This had there was a group of cowboys on board drives up. been turned over to the MAAA to use as who were scheduled to put on a western There was nothing else to do but grab a headquarters, an area for indoor show at the first rodeo in Victoria. Of up the nearest and coldest Carlton draft. flying, and several scale judging rooms. course, this group had been granted Photo No. 2 is strictly a gag shot with This writer was greatly surprised at the carte blanche privileges with customs Monty Tyrrell patiently holding the number of names he was able to recall as and were easily passed through. Upon oversize can of Carlton beer for Pond. I he met many old friends. Photo No. 3 disembarkation, I was mistaken for part figure it was about the right size! Inci shows Gordon Burford, Ivor Stowe (calls of the rodeo group as I was wearing my dentally, for you beer lovers, Carlton himself Ivor F), and Josie Burford. This western style hat. Before I could say a actually makes Foster beer, one of the was taken just outside of City Hall, word, the porter had loaded up my two best-known Australian export beers. Horsham. suitcases, and trundled them past the Carlton is not exported at present as the Many modelers will recall the old custom officials and out those swinging home consumption more than meets Burford engines made in Australia doors! Needless to say, despite my the production of Carlton regular, light, which looked somewhat like K&B Tor astonishment, I managed to keep up and draft. Yummy! pedo engines. Burford’s last bunch, the with the porter. Once outside, there was Monty Tyrrell, little changed from four years ago. A series of cheery welcomes en sued as Monty had brought his dear friends (who were in the local pub at the time), Norman Garrett and his son "Mack,” to help with the festivities. Photo No. 1 shows all these characters. Note they have parking meters in Aus tralia. Well, in less time than it takes to tell about it, all three cars promptly took off for Horsham about 100-miles-plus north of Melbourne. Upon arriving at Hor sham, getting settled at the Westender 9. This gorgeous Supermarine Sea Fury built by Norman Bell of the DARCS club failed to place. Motel, and then adjourning to the local Faman photo.
7. Frank Curzon smiles and "mugs" the camera as Pond takes his 8. Tony Faman (left) and son Michael proudly display their O.S. picture with the 1/4-scale, O.S. 90 powered Gypsy Moth. engines in the Farnan showroom. Farnans are O.S. distributors.
JUNE 1983 35 11. What a shame! This beautiful Westland Whirlwind by David Hull 12. This young man is probably the hottest Formula 1 racer in was destroyed on the steel fence posts. Australia. Ranjit Phelan of New South Wales poses for Pond. Taipan series, were fully competitive flying. model plane flying. Naturally, they were with all other engines. Ivor F (as he styles At this time, the local newspaper impressed that this American had come himself with shortened English titles) photogs were taking pictures for their all the way to Horsham (a town of only was the foremost collector of Burford articles which appeared daily on the 12,000 population) to fly models. When engines, even stumping Burford as to when a certain prototype was made, and if it was even made by him! Anyway, to make a long story short, after Burford retired from making en gines, Ivor hit upon the idea of making engines to fill the gap left by Burford. After numerous tries, he has come out with a good engine called the “ Sesqui” (Lord knows what that means). This is now being delivered worldwide to fill those orders that initiated the project. I do note the Sesqui engine is now being 10. Monty Tyrrell's scratch-built de Havilland Hawk Moth as photographed by Tony Farnan. handled by a distributor in England. O.S. power, of course! As an afterthought, Gordon Burford later dropped in to see this columnist at his home in San Jose on his way back from the CIAM meeting in Paris. At that time, Gordon was exploring the possi HORNET bility of producing a small engine, something like a Class A diesel, and was investigating the American market for - f ------f - r sales. The old timers could use a good, -Φ------small diesel! r — " 5/,e'— i We seem to be easily distracted in our report of the Australian Nationals, but it DRAWN βΥ ALLE N POND was only because so much was going on all at once. One thing that made it a bit Ο I 2 difficult to catch all the action was that I ■ I . I ■ I ■ I free flight, control line, and radio SCALE control were on opposite sides of the town. Actually, one could go from one site to the other in 10 minutes, but you never knew exactly when the best flying would take place. To say this writer was made welcome by the Australians would be the under statement of the year. Most Australians pride themselves on ruggedness, but they really have a heart of gold. I never met an Australian I d id n ’t like. (He would have to be pretty obnoxious.) The first day of the Nationals was spent registering, and getting contestant’s events specified. I will say one thing, the Aussies really put out the red carpet treatment for this Yankee. As a matter of fact, I was even enrolled in the MAAA organization to make me legal for Nats
36 MODEL BUILDER 13. Typical Formula 1 racer line up. They look a shade "dated" 14. Vic Dubery, the new chairman of SAM 35 (now 420 members compared to current American types. strong!) launches an O/T Wakefield, Cloud Cruiser. posed with Monty Tyrrell and hisquarter many requests from readers (and mod Hornet engines can be readily recog scale Noorduyn Norseman, they got elers), Lindberg prepared a two part nized even with these superficial their facts wrong and credited the article on how to construct this engine. changes. model to Pond! These articles appeared in the January The Hornet engine (as presented in As can be seen in Photo No. 4, this and February 1940 issues of Popular 1940) was strictly a small type machinery Quadra powered model attracted quite Aviation. job requiring at most, a simple machine a bit of attention. After the newspaper According to Lindberg, over 60 of lathe. Claims were made that material article appeared, the kidding really these engines were produced at that costs to make an engine would not started, asking how I was able to trans time for use in his models and for those exceed $2.50. As Lindberg pointed out in port this huge model by air. Monty was modelers who were associated with his article, the biggest problem was the even more communicative, referring to Lindberg. Nowadays, original Lindberg crankcase casting which would require the reporter as a "Bloody Bak-stud” Hornet engines are to be found only in the making of a pattern. This was care (one of his favorite'invectives). the hands of engine collectors. fully detailed in the drawings. Well, there was nothing else to do but This month we are again indebted to In making the engine, cold rolled steel be Monty's helper as I was scheduled Dave Brodsky for the use of his engine. was specified for the cylin d e r and only for two days of the week’s flying. The engine has made a rather circuitous piston. He stated the denser the material Monty really flew his model in Monster journey, at one time being owned by used the better. I think what he was Scale very well, but was unfortunately Bob Bowen who purchased the Ray trying to say is that the harder or better placed when doing his maneuvers for Bunnel collection. One never knows tempered material would lend itself to the judges. Can’t say we didn’t try, but when one of these engines will surface. better machining and fit, not to mention the wind really plagued everyone. We Naturally, with homebuilts such asthe longer wear. wuz robbed! Hornet, variations will crop up, particu Interestingly enough, the piston was In mentioning the wind, the Nationals larly in the timer design, tank, and were marred by heavy winds on all but needle valve arrangements. However, Continued on page 71 two days, naturally, the opening days of registration! The Evening Bean Feed (an annual occurrence, sometimes called the Steak Fry) was so windy you could not lay your filled plate on the table lest the wind blow it off, steak and all. (Several dogs were really in hog heaven.) This was truly a shame as the location OLD TIMER Model of the Month was ideal . . . a huge park lawn with the Designed by: Carl Hermes river winding through the greenery. Drawn by: Al Patterson Let’s take time off to look at this month’s engine writeup. (Don't worry, Text by: Carl Hermes the MAAA story continues below, wrf) • This model was one of a series that was Paul Lyzak ran the model shop which There used to be a time when this flown from 1938 on, by a small group in consisted mainly of a little store front columnist would leave this portion out the Bridgeport, Connecticut area. It with a circular saw that produced any of his column, but many complaints turned out to be a pretty good team size stick of balsa that you wanted. The about the missing engine drawing forced effort. closest other source of good balsa at that me to conclude this item must be Chester Kowalkowski was an ex time was Frank Zaic’s (Jasco) in New popular. tremely fast builder and could turn out York City. ENGINE OF THE MONTH two or three ships in the time it took the Bill Wargo was a carpenter whose In the May 1982"Plug Sparks” column, rest of us to do one. We capitalized on work took him all over the Connecticut we featured an engine known as the this by talking Chester into building countryside where he was continually Simplex Hornet which was produced by several wings and tails with different scouting for new flying fields. Bill flew John Morrill. The engine we are fea airfoils to try to find the best combina the Hayseed for the longest time. Its last turing this month is the original Hornet tion. Chester also showed us all by contest was in Rocky Hill in 1980 w'here it engine as designed and built by Paul W. winning the 1940 State Champs. was lost. Lindberg, then Model Editor of Popular Carl Cappozi developed the trim Frank Bushey (ex-AMA President) Aviation. adjustments, tuned motors and modi imported the design to Hartford where Lindberg had been producing a series fied props. He also owned a car (Hud he and Jim Grant (later of indoor fame) of gas powered models (one every son) and every evening during the built a few. Jim made the longest official month for three years!! with most of the summer we would all pile in and head flight (57 minutes) at Long Island after designs featuring the Hornet engine as for the flying field in Fairfield. the war. (see plans on next page! · motive power. Finally, in answer to the JUNE 1983 37 38 MODEL BUILDER
• Nowadays most everyone seems to be may I offer you something more abso a self-proclaimed expert of one kind or lute .. . something that gets right down At "BIG Bird" Alman’s business card reflects another. And, as might be expected, to the nitty-gritty and tells exactly what some interesting side line occupations. each and every one of these “ experts” is, and what ain’t . . . and leaves nothing subscribe to IMAA’s un-contest, low- has special stationery with an impressive to the imagination (see the pic of my key, no-judging type of fly-in, I realize logo or letterhead. bonafide, 100% official, "Expert’s Busi there are others who do prefer the gut- Take R/C experts, for example. Their ness Card” )? It stands to reason that wrenching, competitive atmosphere letterheads always include the some anyone who knows exactly where he's found at fun-flys, quickie-races, and what worn, but time-honored title of at. and what he excells in, can be pattern contests. As long as there are “ R/C Consultant” .. . along with other expected to deliver as advertised. Here’s judges, my services will always be a equally vague descriptions of their a rundown of my six very special cate worthwhile investment. abilities which are spaced along the gories of expertise: 3) INFLIGHT WING REMOVALS — bottom of the page. But. with very few 1) GIMBALS HOT STUFFED — Even Much more easily done on smaller, exceptions, you’re left to guess at exactly though the new Hot Shot cyanoacrylate glow-powered craft that use gummies or what that expert really knows, and what accelerator instantly solidifies all gim relatively small nylon bolts. For BIG he can actually do for you . . . because bals in place for eternity, the secret to Birds, a miniscule but potent explosive his proclamation of expertise is so success is in the timing . .. and not device (patent pending) must be se general and non-specific. Certainly not getting caught while doing the dirty creted aboard and timed to rupture the best way to do business . . . deed. hold-down bolts at the worst possible In contrast to these inane letterheads, 2) JUDGES BRIBED — Although I fully time, i.e., at takeoff or just before the
This is Bruce Gale's labor of love, a scratch-built Curtiss Robin. Would you believe that Marv Reese's Mooney (left) is made of card- Bruce got his early stick time in full-size Robin. Quadra 50 powered. board? Keith Penner (right) poses with his Laser.
40 MODEL BUILDER These life-like Latex rubber pilots can be "made-up" with ladies' make-up. See text.
BIG Birds only. One last word: if you're self-conscious and want to avoid any possibility of embarrassment, keep in mind that all communications will be held in the strictest confidence and treated as ‘‘priviledged information” . . . provided plain brown envelopes or wrappers are used. CARDBOARD AEROPLANES They’ve been around for quite a while, but interest in them seems to come and go, because, up until re cently, there really wasn’t any need fora cheaper way to build airplanes. And oh. those early cardboard aircraft were U-G-L-Y!!!! It seems that nobody even tried to make them look good,although the ones I saw flew remarkably well. Those early “ hackers” just didn’t seem interested in advancing the state-of-the- art in cardboard flying machines. But then BIG Bird Lovers started to infiltrate their ranks and, suddenly, cardboard airplanes started to look like real, honest-to-goodness airplanes. Two perfect examples were Marvin Reese’s bottom of a loop. Here, also, timing is of dumbing themselves (inadequate charg Mooneys. I used the past tense because the essence because a wing coming ing time, using a standard charger to both birds havesincegonetothe“ Great loose during straight and level flight is a charge heavy duty packs, or not using a Flying Field In The Sky,” but not because rather mundane happening and garners heavy duty pack in the first place, are the they were unsound or poorly en no points at all. three dumbest reasons for premature gineered. Mooney No. 1 bought the 4) BUDDY CORDS CUT — Very few battery failure). Maximum points are farm because the battery pack came ever come close to succeeding here. The usually awarded to whoever speaks up loose; Mooney No. 2 pranged because name of the game is to be extremely first and claims responsibility for a Marv ran it out of battery juice. How subtle .. . and twice as sneaky. It takes battery failure. ever, in spite of his obsession for de dedication, one helluva lot of practice 6) SCHNUERLE PORTED W IND- structive testing. Marv did have two . . . and an Uber Skiver knife to become STOCKS (SPW) — This one really separ dandy looking and flying BIG Birds, and competent. ates the men from the boys. In fact, you you certainly can’t tell from the pix that 5) BATTERIES DRAINED — This is won’t find anyone else who has any either of those planes were built out of probably the easiest of all categories experience in this category; I have a packing material. So, because Mr. Reese . . . because so many BIG Bird pilots patent pending for SPWs, and although seems to know what he’s doing when he assist me by outsmarting and/or out- they can be used with the (ugh) smaller builds with cardboard, and because so airplanes, SPW’s really come into their own when aligned and operated with Continued on page 74
L.G. HOLD DOWN BLOCK HARDWOOD BLOCK DRILLED TO ACCEPT GEAR PLYWOOD PLATE 1-1/4 " x 9 "
f ON EACH SIDE OF GEAR GLUE IN HARDWOOD 1 /4 " P IA N O O TO MAKE A CHANNEL FOR GEAR. THICKNESS WIRE SAME AS THE CARDBOARD SO IT ENDS UP FLUSH WITH BOTTOM OF WING. CAP IT ALL WITH A PIECE OF TIN OR ALUM. TO HOLD GEAR IN. Marv's first cardboard Mooney. Flew as good as it looks. Died ‘cause battery came loose.
JUNE 1983 41 Ί. Engine is clamped to the workbench with 2. Overall view of the clutch shaft ready for alignment. a large C-clamp. CHOPPER CH By RAY HOSTETLER p h o t
• This month will be of particular in get the starter shaft perfectly aligned. into the exhaust port, or you will instant terest to those of you who presently own Well, nothing has changed since then, ly ruin your engine. a helicopter with a vertical cone for either. The same care with alignment is Remove the glow plug from the starting. I hadn't really thought about all necessary for any helicopter with direct engine. Take the clutch with starting the problems associated with cone cone starting. (Notice how I refer to it as shaft and place it on top of the fan. Place starting until a few weeks ago. Putting “ direct” cone starting. In last month’s Loctite on the two screws that hold the together the CMP Competitor for an column, I detailed the new cone starting clutch to the fan, and lightly screw them up-coming review (in the next few system that will be standard on Ameri in. months) made me think back years ago, can's Ultra-Mantis. With this new Now you’ll have to clamp your engine when I flew the Schulter Heli-Boy . . . method, typical alignment problems are to a solid surface with the fan and clutch and all the pains that were necessary to eliminated.) shaft free to rotate. See Photo No. 1. What I want to do is give you a simple, Once this is done, clamp a screwdriver yet effective way to perfectly align your or a piece of music wire to the table, and starting shaft, then detail the rest of the adjust the clamps so there is a slight gap drive train alignment process. between the tip of the clutch shaft and I will assume that you have your the indicator you use. Refer to Photo engine in hand with cooling fan screwed No. 2. on tight. I would advise blue Loctitetoo. Rotate the fan/clutch assembly slow If you ever have problems loosening the ly, and observe any variation between nut for any reason, simply insert a one- the tip of the clutch shaft and indicator. eighth diameter, wooden dowel into the This gap is technically called "runout” . If exhaust port of the engine. Gently bring the gap remains the same, you have a the piston up to squeeze the dowel, and rare perfect fit of all components. Evenly your prop nut will pop loose with a little tighten the two clutch screws snug, and more pressure. Never insert any metal recheck the runout. For the majority of installations, there will be noticeable runout. Position the clutch shaft at the greatest gap, and then check to see where the two clutch screws are positioned. If they are ap proximately vertical, you may have to shim one or both ends of the clutch with the shims off-center to enable you to pull the shaft into alignment. (See Figure T.) If the screws are approximate ly horizontal (Photo 3), you may have to simply shim one end of the clutch. Then again, with screws horizontal you may be able to differentially tighten the screws to bring the shaft into alignment. Tighten the screw on the inside of the clutch (right screw in Photo 3) a bit 3. With screws horizontal (dotted line) and 4. Detail photo of corner shim along with an more, and recheck for runout. If you max gap at pointer, shim clutch's left side. end shim. 42 MODEL BUILDER be patient. Time well spent here will engine in place first, then force the top save you “ unsolveable” vibration prob bearing between the side frames, the lems later on. clutch shaft will not run true, and it will In the particular example shown, you produce vibration. Most kits have a can see that I needed two shims on the second (upper) bearing and bearing ends, and one shim on the corner of one block that slips over the clutch shaft. end. Detail of the corner shim is shown Install this bearing now. Make sure that in Photo 4. It took me about 20 minutes the mounting bolts slip easily through to do this clutch shaft. The reason it takes the side frames and mounting blocks. If as long as it does is because you just can’t not, enlarge the holes in the side frames put in a shim and forget about it. Shim just enough so the bolts easily slip position is critical, and how far you push through. The reason this is done is that the shim in will vary how much the run even the second bearing block can out changes. Once you sit down and throw things out of line if itYs forced into do a clutch, you’ll find that it’s not nearly place. as difficult to do as it sounds .. . Now if I Once the engine and bearing blocks could only talk WCN into producing a are tightened and in place, the whole videotape magazine, it would be a lot assembly should not be moved again. I easier for all of us! recommend that after the engine is After you get the shims in the correct mounted, you move the main gear spots with screws tightened down, you slightly to set the play between the main can add a drop of Hot Stuff on the shims gear and the engine gear. I realize to insure that they will stay put. This however, that some kits make provision comes in handy of you ever have to for sliding the engine to set the mesh Figure 1. When clutch mounting screws are disassemble the clutch. The shims stay between the engine and main gear. If vertical, shims w ill go off-center as shown. neatly in place so reassembly is simpli this is the case, adjust the engine as fied. When everything is set, trim off the required for proper mesh, then tighten have a very close shaft to start with, this excess shim material with a sharp model the bearing on the clutch shaft first. In may be sufficient to line up everything. ing knife. See Photo 5.) either case, you can use that upper As most installations need shims, Now you can be assured that you bearing to center the engine between you’ll need shim material. Find the won’t get vibration from a misaligned the side frames. thinnest brass shim sheet you can. K&S starter shaft. However . . . if the engine Given that the mesh is set between offers assorted shim stock at any hobby and clutch assembly is improperly in the engine and main gear, you can worry shop that carries the K&S display. Use stalled in the helicopter, you’ll still have about the tail rotor drive gear mesh. I the thinnest sheet from this pack. (You'll vibration, so let’s look at the proper way believe that most people who break tail find the thicker ones will come in handy to set up the entire drive system. I want rotor drive shaft wires set the drive sooner or later.) Cut a few nice-sized to let you know that I am making direct system up “ backwards.” By this I mean pieces (one-quarter by one inch) so the reference to the Competitor in the that they set the tail rotor gear to the shim is easy to handle. The bulk of the following paragraphs, but the theory main gear, then they ram the drive shaft material will be trimmed away at the end can be applied to all side framed heli wire in place and screw it tight with the of the shimming process. copters. set screws. What happens is that the tail In Photo 3 ,1 have set the runout gap at Place the engine with clutch between rotor gear assembly is never aligned its maximum, and I’ve added a shim to the side frames. Loosely install the perfectly parallel to the drive shaft wire. the outside end of the clutch (left side of engine mounting screws (finger tight) to With this condition, each rotation puts clutch in photo) because my screws the L-brackets or side frames as the case unnecessary stress on the drive shaft were horizontal. Earlier, I had to shim may be. Take the bearing that supports wire, which eventually fatigues and fails. with the screws vertical. See Figure 1 for the clutch shaft and slip it over the clutch The way around this potential problem the position of the “ off-center” shims shaft and between the side frames. is to insert the drive shaft wire into the on both ends as I detailed before. Insert the mounting bolts through the front coupler and gradually tighten the It is imperative that both screws be bearing block and tighten the nuts. Now set screws to keep the wire centered in tightened up after inserting each shim. drop down and progressively tighten all the coupler. Once this is done, let the To insert another shim, both screws the engine mounting bolts. tail rotor drive shaft center the tail rotor must be loosened enough to stick the What you have just done is to use the drive bearings and gear. To do this, the new shim in. It will take several tries to top bearing (just above the clutch) to get the shaft shimming straight. Please center the engine. If you tighten the Continued on page 78
5. Trim off excess shim with a modeling knife 6. You can expect to achieve nearly perfect alignment if you take your time and do it right. Photo shows max runout after shimming.
JUNE 1983 43 Here's the new Delta Super Phaser 1/12 car as it looks wearing an MRP body, the new Kremer CK-5, one of those super-clean GTP numbers.
Βγ DAN RUTHERFORD R/C AUTO NEWS PHOTOS BY AUTHOR
THE DELTA SUPER PHASER be little likelihood of them changing of items that were overlooked in doing Yes, we finally offer a get-down, get- now. the plans and instructions. My personal view of the instructions should probably dirty test of the latest race car from The good news is that you -just read most all of the bad news about this race be tempered somewhat in that I have Delta. The car has most impressive car, as what is inside the box is more built a number of Delta race cars, includ credentials, taking the very prestigious important to Delta than the box itself. ing two Phasers, the predecessor to the Modified Class at the World Champs. Delta’s concern for the contents of the Super Phaser. So, when the plans call for You would expect that a race car like box shows in the accurately machined an RP115,1 know what to look for, while this would come wrapped in high-zoot pieces, the basic design, and the overall you may have to run your finger around packaging, right? Wrong, of course. This attention to detail. This is quite evident the plans and through the parts for a is a Delta product; they grab a standard when checking over the plan sheets, as minute or two. Anybody building his size box off the shelf, slap a label on one everything you need to know to build second or third 1/12 race car will have end, wrap the sucker with some red the car is laid out step-by-step, and is no problems, rookies will take an hour tape, and ship it out. Absolutely terrible backed up by excellent blow-up view or so longer to get the car built properly. merchandising. But that’s the way they drawings. Well, almost everything is On a scale of one to ten. Delta gets a have always done it, and there seems to there, a small addendum details acouple solid eight for the instructions. Asso ciated is still tops here with a rating of nine. There are no six or seven ratings. . . As long as Associated’s name has cropped up, it should be mentioned that they supply a couple of important pieces to Delta for the Super Phaser: the best ball-type differential available, and RC12E steering blocks and front wheel axles. Incidental items also supplied by them are the wing tubes and wing buttons. The Phaser and early proto types of the Super Phaser also used Associated wheels, but this particular kit came with some lightweight wheels imported from England (Phil Greeno produced). Shown in the pictures are Delta's own wheels, which are lighter yet, and will be standard equipment in future kits. Hmmm, I almost made a mistake by failing to mention that Art used Asso ciated’s TO) body at the World Champs. In fact. Delta suggests its use; it is a body that handles very well. As you can see, I use MRP’s Kremer CK-5 GTP body (say Overall view of the Super Phaser shows its light, strong construction, and neat layout of radio that three times quickly!) because it components. Note the small Novak receiver.. . easy installation! works and looks bitchen. I have also
44 MODEL BUILDER Bullet-proof resistor installation and single shock absorber show well. Corner marshall's view of Super Phaser. Typical Delta attention to de- Shock is the only piece above pan holding rear end "pod" on. tail seen in nylon tie routing. Allows minimal ground clearance. used MRP’s Ford C-100 GTP body on the one side of the piston to give the proper that Delta is using much lighter springs car and suggest you try this popular damping. The fiddlers are bound to have in the front end. When set properly, the body as well. a field day with this shock, trying dif heavier of the two spring rates offered The most talked about and soon to be ferent rate springs, and all sorts of fluids will actually compress enough to allow a the most copied feature of this car is for shock oil. I am using it stock with 1/16 in. gap between the bottom of the what has come to be known as the Delta’s 90 weight oil, and nave no reason steering blocks and the top of the cross ‘‘broken back” chassis: the rear pod (so far) to try any other combination. bar. As with the broken back idea, look connects to the forward chassis pan by A nice bonus which is a result of using for other manufacturers to follow along. only a T-shaped (and quite flexible) this shock is that the ride height of the Associated already has a conversion kit chunk of black 'glass. To give credit main chassis pan can be varied some for the RC12i, and locally, MRP has been where credit is due, the RC12i was the what by running the adjust nut up and racing cars fitted with a springer front first production car to have this "broken down the shock body. When getting the end. The Parma car, which is based on back” feature, although it is not nearly as car set up "just so” for a particular track, the Lightning 2000, already has a sprung flexible as the Super Phaser, and the this will be a handy feature as the battery front end, but will no doubt soon be movement of the rear pod is dampened pack is heavy, and it can have quite an using springs that are much softer. in a considerably different fashion. effect on the handling. The aluminum cross-bar front end Actually, I do not know the sequence of As mentioned before, isolating the used on the Super Phaser is shared only design steps which led up to the Super rear pod from the main chassis pan, and with Delta's Phaser, and has proven to Phaser, or whether it was even inspired then damping the rear pod’s movement be a strong and lightweight piece. But by the RC12i, I’m just pointing out that somehow is an idea that is seeing rapid where it really comes in handy is when this design is not quite as radical or new acceptance with other manufacturers; you are adjusting caster; all you have to as one might at first suspect. performance of box-stock Super Phasers do is loosen one screw and the clamping The execution of this idea is, how is so good that everybody else is hustling block on the right allows the cross-bar to ever, outstanding in its simplicity and to get caught up in the race to offer pivot freely to any caster setting you effect on the handling of the car. The state-of-the-art chassis. want. Even though the useful range of T-bar gives a lot of flex, effectively Suspension is also used at the front of adjustment is only from zero degrees to suspending the entire rear end of the car the Super Phaser; again, not a new idea, about five degrees (if you need more which includes a rather heavy chunk of the very first 1/12 cars (then gas engine than five degrees caster, what you really metal in the form of the motor. To powered and known as Jerobees) had need are softer front tires) this feature is dampen the considerable movements of springs in the front end, as did MRP’s a great advantage for Delta racers who the rear pod, a slightly modified Delta early electric cars. MRP and most every use it properly. Incidentally, the two shock absorber is used, the same design body else dumped the idea, although blocks that support the cross-bar have that has proven so effective on the 1/8- JoMac (parent company of jerobee) been cut down (compared to the same scale Eagle. The mods include a much hung on to the concept, using it in the lighter spring, and a flat which is filed on Lightning 2000. The difference here is Continued on page 93
Springer front end of Super Phaser uses light springs. Crossbar is Yes, it was a terrible crash.. . Rear pod easily disconnects from easily adjustable for changing caster. Light Delta wheels! chassis. T-bars tie pod to pan, and yield superior handling.
JUNE 1983 45 Bill Hornell (leh) and Ed Fisher with the The 40-60 Canard looks like something from Star Wars, but is really a down-to-earth racer. Fisher Boats 40-60 Canard . . . all big winners. Canard design breaks away from the outrigger and 3-point hydro concept. R/C POW ER BOATS By JERRY DUNLAP THE FISHER 40-60 CANARD and NAMBA record holding boat in 40 transom plate, included with the basic If any one model boat has caused a and 60 hydroplane oval racing is now boat will be a complete set of instruc controversy lately (at least in (he North available from Fisher Boats, 12001 Marine tions, photos, and full-size drawings American Model Boat Association) it View S.W., Seattle, WA 98146. Everyone showing locations for all needed instal would have to be thecanard hydroplane knows about epoxy fiberglass, but what’s lations. design of Ed Fisher. Issues concerning this “ limited edition” stuff? Limited A hardware package designed espe this design came to a festering sore at the edition means the boat is only available cially for this boat is available for $98. 1982 NAMBA Nationals in Los Angeles through Fisher Boats. Don’t bother This hardware package is all custom when the boat was protested as being looking for it in your local hobby shop made, featuring top quality material illegal to race in the Sport 40 class. In my . .. it won't be there. Each boat will be throughout. All the necessary fasteners column a few months back, I gave an numbered as it is laid up, and the hull are included, and are made of stainless account of this controversy. Basically, certification will be glassed into the hull. steel. there were model boaters who felt that You’re probably thinking, "I bet this )ust in case there is someone reading the canard design didn’t belong in the thing must cost an arm and a leg.” this and saying to himself, "I just gotta Sport 40 class because it didn’t look like a Compared to mass produced fiberglass have one of these things,” here’s what traditional hydroplane. The canard or wooden models, the basic boat cost you're going to need to do. Get out your hydroplane was allowed to race in the of $248 for the Fisher Boats 40-60 Canard checkbook and send Fisher Boats 50 Sport 40 class and was subsequently is higher than other model boats. How percent down. This down payment gets banned from the class beginning this ever, a Porsche is also more expensive you a hull number and an approximate year. than a Chevette. There are a number of date of delivery. The other 50 percent is Did I mention that it won the 1982 features about this boat that make the due on delivery of the boat. “ Wait a NAMBA Sport 40 National Champion price tag not so terribly unreasonable. just a minute," you're probably saying to ship? Besides winning the Sport 40 Epoxy fiberglass contruction is more ex yourself. “ Who does this Fisher fella Championship, the boat also won the 40 pensive than regular fiberglass construc think he is, expecting us good-old boys Hydroplane Championship, and placed tion, but it is also lighter and stronger. to pay in advance?” third in the 60 Hydroplane class. In all The basic hull comes completely joined Having to ask who Ed Fisher is in three classes, the boat had the fastest and includes all the necessary wooden model boating is like having to ask who heat time posted in the class. parts needed for attaching the motor Jack Nicklaus is in golfing. In NAMBA, A limited edition, epoxy fiberglass and hardware. The only gluing neces no one has established more records for version of this national championship sary is affixing the motor mounts and model boating than Ed Fisher. He is
Transom view of the 40-60. This design successfully blends aerodynamic and hydrodynamic Basic 40-60 kit. Epoxy fiberglass construction, principles to produce a record breaking boat. Note lack of turnfin. to p q u a lity hardware. See te x t.
46 MODEL BUILDER The 40-60 at top speed. Not as fast as some in the straights, but Bob Lafayette (Toledo, OH) sends this photo of his Dumas 'glass doesn't slow down in the turns. Fast combination. Hotshot 21. Bob's K&B 3.5 has header pipe added.
K&B 7.5 Marine with reworked K&B carb. Sullivan fuel tanks reside under cowl. rapidly approaching his one-hundredth record. He’s a National Champion in monoplane, hydroplane, deep vee, and Overall view of Bill Homell's Fisher 40-60. K&B engine is mated with Prather Products tuned outboard. pipe and coupler. Kraft radio equipment controls things. Another thing Ed Fisher is for sure . . . he’s controversial. Ed never has been a model hydroplane. I can remember holds any straightaway records. This one to do things in the traditional way. seeing this type of design at the 1969 unique design allows the boat to corner When it comes to designing model boats IMPBA Internationals in San Diego. I at full throttle without any sliding. It this is especially evident. Back in the late think one of the Hawaiians ran the boat. does this without the use of any turnfin. '60s and early 70s the standard mono (Could he possibly have thought up the This means the boat can be turned to the plane design was a semi-scale ski boat. idea while drinking fermented pine left without fear of tripping it on the Ed built and raced the standards and apple juice?) No, Ed wasn’t the first one turnfin which is sometimes a problem figured there had to be a better design. to try a canard model. However, he has with outriggers. I have had the oppor When he first came out with his delta had more success with the design than tunity to drive these canards, and they shaped "Northwind" monoplanes, we any other model boater. In the last five remind me of driving my deep vees, but wondered what they were. Then, Ed years, Ed’s canard hydroplanes have they are much faster. The cornering quickly established records with the established over 20 records in 20, 40, 60 characteristics of the boats are fantastic. new boats and we soon discovered what hydroplane oval racing, and also in 20 You can enter a corner with wide open they were. .. They were fast! outboard hydroplane. throttle in lane one and exit the corner Ed also raced the standard hydroplane The canard design is best suited for designs. At first it was pickle-forked oval racing. I don’t think it currently Continued on page 78 conventional hydroplanes, then it was outriggers. He set records with both of these types of hydroplanes. In 1974. he began developing another concept for model hydroplanes, the canard. He wasn’t the first one to try this concept as
Business end of the 40-60. Octura 1462 for The canard configuration is much different than the outrigger. Note steps on rear sponsons and .40s, Prather m uffler for noise control. strakes on front sponson. Appropriate shark's teeth!
JUNE1983 47 By DICK HANSON
• This past winter season gave us the opportunity to develop some ideas which we think may be of interest to our fellow pattern enthusiasts. The first project was another attempt to achieve lighter wing construction. To make a long story short, wecouldn't find a substitute for one-pound density foam covered with six-pound density balsa using epoxy for bonding. Any necessary wing or aileron strength increases were accomplished using carbon fibers and/or glass cloth and epoxy. Typical weights were: 750 sq. in. wings, 16 oz. without landing gear, and 22 oz. using retract mounting plates; 900 Dave Stuart's C.A.P. 21 is totally finished in Monokote except for cowl and wheel pants which sq. in. wings were 24 oz. with fixed gear are painted. Dry weight works out to 10 pounds. mounting installed. Using Monokote for the covering material, we felt that the working with engines larger than .60- the static thrust to weight is only a little final weights were very satisfactory. size . . . because that’s my favorite size, on the positive side. In zero wind I keep reading about people who and will be until the FAI limit for pattern conditions at 4500 ft. elevation, the construct larger built-up wings to make changes. Neither have I tried building model will take off in approximately 25 gear mounting easier and structure for static wing loadings exceeding 30 ft. and can be pulled immediately into lighter. Frankly, I would like to know ounces per square foot. The gross-size an Immelman. Vertical performance is what techniques and materials they are models using 1 to 1000 cubic inch good, but the four point roll gets soft on talking about. The only lighter tech engines are great, but there is. a certain the last point if you try for long, vertical nique I have found is the all balsa element of absurdity abounding thereat rolls. In our opinion, all of the current stressed skin type of construction (which present. Masters pattern is duck soup for this is weaker). The photos of the C.A.P. 21 are Dave plane. We find that by simply cutting out Stuart’s, his model is finished with The adjustable stab allowed trimming bays (or holes) in the foam core wing, Monokote, including all lettering and for “ rudder only” knife-edge flight. The and leaving wide areas between the bays details. The cowl and pants are painted. amazing thing is the 21’s ability tosustain to simulate wide ribs, we achieve the Dry weight of the C.A.P. 21 is 10 lbs., altitude in knife-edge flight. I suspect best strength to weight ratio. This is which is a result of using some heavy the long wings and considerable dihe because you can gnaw the holes any wood in the tail feathers which in turn dral help here. place you desire with no need to follow necessitated adding some nose weight. Dave showed me a little trick which he spars, ribs, etc. This must be done with The C.A.P. 21's tuned pipe is internal, found the model does easily, an eight caution, however, or the structure could and the engine is a stock O.S. V.F.A-1 turn spin: two left, two right, two collapse under load. The most practical gear box type. The prop is a Zinger 14/8, inverted left, and two inverted right. I places to carve out the holes are on and the fuel used is five to 10 percent have been flying this model every ailerons, rudder, elevators, etc. nitro. chance I get and look forward to testing I must remind you all that I am not Its performance is a little deceptive as the second model which is slightly lighter .. . just nine pounds using a O.S.V.F. C-2 unit running a 16x10 prop. These engines apparently will deliver power equal to popular chain saw engines with much less weight and vibration. Another project this winter has been an attempt to get a new direct drive model that will do the FAI pattern with style. Our trusty 825 Hippo Tippo does it with ease, but we thought another design couldn't hurt! The Dalotel, as flown by Hanno Prett- ner, looked like a good shot, but we wanted to try to improve it by making it look more scale-like. My friend Roger Selander found three photos in some aircraft annuals, and we whomped up a pair of 825 sq. in. models using STx60 engines for power. They both turned out weighing 7 lbs. 10 oz. using Royal retracts and Monokote covering. No Another side view of the C.A.P. 21. Model uses a stock O.S. V.F.A. -1 gear box type engine with internal tuned pipe. Prop is a Zinger 14 x 8. Continued on page 80 48 MODEL BUILDER England's King of the fun-flyers, Ray Malm ström, does it again! Charming "Veebipe" spans 16 inches, weighs 1/2 ounce, and aver ages 45-50 seconds in duration. lubricating rubber suspension shackles, bushings and fittings, as well as for mounting tires. Locally, the lube is priced at $1.83 for an eight fluid-ounce filled plastic bottle. Have any readers tried it for model rubber motors? • This month’s lead-in line is from like to think his splendid publications THAT PERSISTENT P-FACTOR comedian/actor George Burns, and will keep his name alive among builders We had anticipated some reactions to would seem to be a suitable motto for of scale models for many years to come. our mention of the propeller P-factor, builders of scale models. SAINT-EXUPERY which unfortunately appeared in some Our little "Hangar" logo (the drawing According to an Associated Press what garbled form. Don Typond, of New at the top of the page) has attracted a release, a Lockheed P-38 wing has been Jersey, was the sole dissenter, and he variety of comments over the years, but retrieved off the coast of France which feels that a clear distinction exists we particularly enjoyed this one, sent in may offer a clue to the fate of Antoine de between “ One P vibration” and “ P-fac- by Bob Andrews, of Miami, Florida. Saint-Exupery, quite likely one of the tor": "I suggest that P-factor is still very According to Bob, the man in the great most memorable author-aviators of all much alive and well." coat standing by the Nieuport mono time. Fondly remembered for his Night TURNABOUT plane is saying: "Perhaps we should add Flight, The Little Prince, Wind, Sand and From Phil Jarrett's “ Grapevine” in another wing and install a round Stars, as well as other philosophical Aeroplane Monthly, we learn that the engine.. masterpieces, Saint-Exupery vanished Smithsonian Institution has loaned the GOOD QUESTION without a trace during a 1944 reconnais Gossamer Albatross of man-powered Although we feature attractive girls sance mission. It is hoped that the Channel-crossing fame to London’s relatively infrequently in this column, discovery of the Lightning wing may Science Museum. Seems rather poetic, those who do appear are apparently help to resolve the mystery. as that Museum was the repository for so appreciated, as witness this letter from many years of the Wright Flyer, which is Bill Kee, of Idaho: "What I want to know RUBBER LUBE SOURCE? Ken Hannan recently found that some now displayed within the Smithsonian is how come an old geeser like you can automotive accessory stores market a Air and Space Museum. continually have these pleasing-looking product called simply RUBBER LUBE. FOR WANT OF A BLADE young dishes send in their photos? Manufactured by the McKay Mfg. Co., Model builders are an unusually Never mind that they are holding their of Los Angeles, the fluid is intended for discerning group who are reluctant to Pa-Pa's model... Now that is the way to get us other οΓ geezers to chew our nails right down to the quick, through stark green-eyed jealousy. .. Well, some has it, some don’t.” EFFICIENCY? English model builder Denis Fairlie notes: "I find now that I’m retired, work expands to fill time available. Also keep chastisizing myself for making silly errors of building judgment. . . coming to the best solutions only after I’ve made the part(s). I never use a single piece of wood when I can use about seven, it seems.” Well, rest assured you are not alone, Denis! A.J. JACKSON We regret to report the passing of A.). Jackson, well-known English aviation historian. "Jack” is perhaps most famous for his Putnam historical books, includ ing British Civil Aircraft 7979-59, De Havilland Aircaft Since 7975, Avro Air craft Since 1908, and Blackburn Aircraft Since 7909. He was also deeply involved in AIR-Britain, the British Civil Aviation News, and was a long-time contributor to Air Pictorial. Jack had been a model Peter Frostick, of England, proudly displays his Farman Moustique and Lockspeiser canard builder during his earlier years, and we Peanuts. Photo taken by Alan Callaghan.
JUNE 1983 49 If you look closely, you'll see the delightfully whimsical pilot who is flying Andrew Uminski's R/C Vickers Blériot Type 22. Model and builder reside in West Germany. settle for second-best products. Seem steel blades. These were doubtless model products including strippers ingly simple things, such as razor blades, better, for shaving purposes, as they which employ razor blades. He urgently are a good example. These may be featured sharper, hollow-ground edges, felt the need to find a source for the among the most mass-produced items in and were rust resistant. But they lacked “ good old days" double-edge blades. the history of mankind (and womankind the stiffness essential for modeling uses, To say his efforts turned into a monu too, of course!), and are taken pretty and builders were hard-pressed to find mental task would be a masterpiece of much for granted by most people . . . suitable replacements. understatement. Suffice to say, he spent but not by modelers. Although there is a One individual who did more than a bundle on long distance phone calls. profusion of brands and types, few are complain about the situation was Jim suitable for our unique purposes. Jones. Jim manufactures a quality line of Continued on page 80 Single-edge blades are still available in good quantity and at reasonable prices. But don’t count upon this always being true . . . plan ahead. It is the double-edge blades with which we are here concerned. During the 1930s and 1940s, when many of us became involved in the hobby, the common approach to starting any model was to very carefully break a double- edged razor blade in half, and then to break the end of each half at an angle, to produce a sharp point. Model kit com panies of the era routinely suggested this idea right on their construction plans, and the resulting cutting tool simply had no equal for certain tasks in cutting thin balsa and trimming tissue paper from the edges of covered frame works. During the 1950s, these fine blue carbon steel blades went quietly out of David Phillips made these remarkable Peanut Scale trophies using the Lost-wax casting system. production, being displaced by stainless More info about these little gems in the text.
Brass master model of Swedish Saab 92, built by Doug McHard, Milan Kacha of Czechoslovakia constructed this Hawker Hurricane designer of several models in the MB b o o k Flying Models o f WW-U. from Eari Stahl plans. Modela C O j engine, 106 grams total.
50 MODEL BUILDER
8. Unidentified F/F model at Taft World Champs featuring clothespin type springs on double arm V.l.T. Note foam pad under stab. this section holds a great deal of promise. While on the subject of airfoils, I want to thank Carl Schueler, Don Brown, and Gerry Myers for sending me the G-5 coordinates. This airfoil will be featured strapped the wing of a 750 sq. in. FuBar in a future issue. Thanks, guys. on backwards . . . Yes, backwards. He Gerry also sent me a picture of Han fired up the Torp. 35 and let her go. You nan’s Escondido Mosquito to tease our couldn’t tell any difference. That sucker readers — it’s a beaut, so I’ve included it climbed out just perfect . . . hardly any this month. difference in altitude.” Finally, still on the subject of airfoils, So much for science . . . once again the Satellite newsletter mentions an superstition and luck win out! event that will probably destroy all of the So, for those of you who have written energy and effort that has gone into to ask about the exact percentage of the airfoil design. Ralph Prey sez, "How nose radius, or the meaning of some critical do you think our free flight esoteric designation on the airfoil, chew models are?? For example, I can well on Ralph’s statement awhile. Nuff said. remember the day when I was in Okla V.l.T.: VARIABLE INCIDENCE homa City at the FAA Aeronautical TAIL, PART I Center in 1949 learning about jets from What is if? V.l.T. is simply a system that Ray Matthews, who designed the FuBar allows the model flier to fly a F/F power . . . It was when we were flying our model with separate trim settings for FuBars that Ray showed me how tolerant power and glide. Essentially, you set up our free flight models can be. He your model to fly with less incidence
10. Double arm V.l.T. system seen at Taft 9. Rear view of V. I.T. in Photo 8. Pic shows WCs. Features flat head screws at stab T.E. aluminum stab mount/pivot plate, split arms. DARNED GOOD AIRFOIL - RITZ (NACA) 6306
^
STATION 0 1.25 2.5 5 7.5 10 15 20 25 30 40 50 60 70 80 90 95 100
UPPER 0 1.13 1.67 2.48 3.12 3.65 4.5 5.12 5.55 5.81 5.9 5.56 4.9 5 4.08 2.98 1.64 .88 0
LOWER 0 -.76 -.94 -1.07 -1.08 -1.03 -.85 -.6 2 -.39 -.19 .08 .27 .38 .42 .35 .1 9 .08 0
JUNE 1983 55
1/4-x 1" T.E. "DEJA V U '' BY: TOM HUTCHINSON 1981 "NEW CONCEPT" FAI " 2 / 1 - 1 1/32"x 3/16" CAPS 1/16"x 1/4" CAPS 11-1/2" r μ « Ι 1 /8 " SQ. 1 -1 /4 " V IT 10% T H K . 1/8"x 1/4" SPR 1 /3 2 " SHT.
" 8 . . BO TTO M / 8 1 3 0 " 1 /1 6 "x 3/32" SIDES 1 /1 6 " TOP 1/8" TOP, BOTTOM BUILT-UP PYLON & FIN 3 /1 6 ' 0.6 oz. GLASS & EPOXY COVERED X 1 /8 "
5 —1 /2 "
OLOFSSON PROP COX OR ROSSI ON K-H MOUNT 1-3/4 σ> on MODEL BUILDER FIG. 2 SINGLE ARM V.l.T. - TRAPPED SPRING STYLE
S TA B ~------I p
^ 0 ------TO D .T. A R M ------á ______T O V .l. 1. A R M
u
FIG. 3 DOUBLE ARM V.l.T. - TRAPPED SPRING - IN GLIDE POSITION.
(and less drag) during the climb, and theoretically it will have lighter extremi to increase its negative incidence for the more incidence for the glide, thereby ties (at least at the tail end). glide. The change in incidence is timed improving the performance without CON-V.l.T. ARGUEMENT to occur shortly after the engine quits compromising power for glide, or vice The cons against V.l.T. are several as . . . usually about one second, or when versa. As a bonus, models can be made well: ever the model’s speed decreases that will transition quickly from power • Additional gadgetry is needed for a· enough to enter the glide without either to glide phases without loss of altitude. V.l.T. system. This fact means that diving or stalling. All that needs to be That’s the ideal, at least. M urphy’s Law (“ If anything can go done is to rig the model to do so. The PRO-V.l.T. wrong, it will go wrong.” ) is apt to come following examples do not intend to PRO-V.l.T. ARGUEMENT into play. represent the only ways that such rig The pros were pretty much covered in • A special timer is needed. This is ging can occur, but do represent several the preceding paragraph, but some basically correct, however articles in typical installations. others exist: Model Builder (and other sources) have Please refer to Figures 1 and 2, and A model is easier to trim when a VIT is shown how to modify a standard camera Photos 1, 2, and 3. used. The reason is that you can trim the timer for use as a V.l.T. ... so no SINGLE ARM V.l.T. power and the glide phases separately. additional expense or weight should This system uses only one arm. The • More of the model's total surface result. stab is held down against the stab mount area can be placed in the wing, as a large • The technology is beyond the aver by tension from a spring or rubber band stab is not needed to control power. age modeler. This con is generally not loaded line that attaches to the stab and Consequently, the wing can be made true. If you can build a model from goes directly to the V.l.T. arm on the more efficient. plans, you can build a model with a V.l.T. timer . . . much the same as an AMA gas • The balance point can be placed As you can tell, I favor V.l.T. systems, model may have its D.T. line hold the farther forward than on the typical AMA and when you finish reading thisseries, I stab in position. gas model. This forward B.P. has the think you will be able to see why. The At the end of the power run, this line is potential of making the model more pros do outweigh the cons. then released, the stab pops up, and it stable, and thus easier to control. With a HOW TO SET UP A TYPICAL V.l.T comes into contact with the adjustment smaller, more efficient stab, the total The concept is simple. The stab is held weight of the model should be less, and in one position for climb and is allowed Continued on page 83
JUNE 1983 57
M IAM A’s Millard Wells holds his neat Hughes Racer peanut. Wing leading edge and fuselage are hollowed foam. Scene was Opa Locka Hangar in Florida. w ingtip area of the plan. Carefully Marty Schindler holds the beautiful Cox Sub Scout built by Hurst Bowers as Hurst couples its pinhole the outline (make the holes nose to the motor in preparation for an indoor flight. 1/8 in. apart) through the plan and the bond paper. Remove the bond paper and cut the tip outline with sissors. Make the cut as accurately as you can. Next, cut one square inch from the same sheet of bond paper, and weigh the paper on your beam scale. (The scale must be set very accurately.) Then, weigh the tip pattern cut from bond paper. Divide the weight of the sauare inch of paper into HOW TO DETERMINE WING AREA by the dihedral angles of the wing. On the weight of the tip outline and the Have you ever tried to figure out the the plan sketch, modify the tip outlines answer will be the number of square area of a Pennyplane wing? It’s easy if to conform to this projected shape. Now inches in the tip outline. Add to this the outline of the wing is all straight make your square inch drawing over figure the square inch area of the lines. You simply take your handy T- this. Remember, one square inch is one adjoining inner panel and double this square and rule a straight line every inch inch high times one inch across. 3mount for the total area of the wing. If vertically and do the same horizontally. How do you figure the area of the one wing panel is larger, figure the area Then you color in all of the full square wing if it has curved outlines? Well, of each half separately. I believe this is an inch areas with a colored pencil. When some mathematically gifted fellows use accurate way of figuring the area of your you come to the partial squares, match a thing called a planimeter. Most of us, I projected wing. two or more partial squares so that they suspect, don't have one of these lying INTERNATIONAL POSTAL add up to one square inch, and color in around the house. Here is another way ORNITHOPTER MEET those areas. Number each square inch you can compute the area. This method Dave Erbach of Canada has initiated a area so that you can easily count them. does require the use of an indoor beam contest just for flapping wing indoor Remember, some of the rules state that scale, the type of scale which will aircraft. This postal meet runs till the area must be figured as projected measure down to 1/1000 of an ounce. December 1, 1983. The flights must be area. Projected area is how the wing After you have drawn the projected logged either at a contest or a record would look when viewed from above, outline of the wingtip over your plan, trial sanctioned by the Federation Aero- including the shortening effect caused place a sheet of bond paper under the nautique Internationale or by any of its
Gulfhawk peanut built by Junior age modeler, Chris Johnson. Wheels The MIAMA group flies in this Category I boxing gym for time trials. are in the retracted position. Flew very well. Photo by editor. Three new records set: Heather & Mike Arak, and Dave Linstrum.
JUNE 1983 59 George Leffler launches his Hellcat No-Cal rubber model. So much Nice OH-6 peanut built by Bill Warner on display for judging at Paul variety in this indoor hobby of ours! Revere Jr. High in Los Angeles. Bill teaches at this school. affiliated national organization. No FLAPPER FLAK 20 years, and building 132 flappers, you entry fee is required. The aircraft must This editor is disappointed with one would think I should be able to build be rubber band powered, and there is portion of the rules for this contest. Part what I like. no restriction as to size (up to 1000 of the event definition states that the I welcome your comments on the square centimeters for the total support sum of the areas of any supporting above opinions. ing surface). The best single flight wins. surfaces must not exceed one-half the NEWS FROM THE GREAT NORTH Unlimited attempts are allowed. Entrant area of the flapping surfaces. This re Usually your editor doesn't comment must send his or her name and address, striction is not in harmony with the on individual letters, but this one is date of the flight, name of the contest, current AMA rule regarding areas in unique, and an exception. The news is and the ceiling height to Mr. Erbach. A ornithopters. The AMA rule states that that MODEL BUILDER is even read and statement from the contest director is the projected area of the flapping part enjoyed north of the Artie Circle. required varifying the flight time, as well shall not be less than that of the fixed Mr. Andy Anderson commutes (by air, as a scale three-view of the airplane with part. In other words, Mr. Erbach’s rule of course) between Fairbanks and Fort dimensions and rubber size. Include a cuts the ratio of fixed area to flapping Yukon, Alaska. Fort Yukon is 8-1/2 miles photo of your model. area in half. north of the Artie Circle. Only the Mr. Lew G itlow of Indoor Model We flapper designers build our models schools promote an educational pro Supply of Garberville, California has to one formula (or rule), then Mr. gram focused on “ things that fly” . A donated merchandise prizes to add to Meuser comes along and rewrites that community center in Fort Yukon might the awards. The first prize is $80 in cash rule .. . Now Mr. Erbach comes along become available for indoor flying. Its 24 and merchandise. Second prize is $50 in and rewrites that rule again. Now it ft. ceiling would be ample to allow fliers cash and merchandise. A special award seems we must discard our designs and of all ages to learn and enjoy indoor of $35 in merchandise will go to the start all over with new concepts. It would modeling. In this remote area where fun modeler with the highest flight time appear that we are moving toward a no- activities are restricted by the elements, using an Indoor Model Supply orni- fixed-wing machine. Perhaps there indoor model building would be ideal. thopter. should be two ornithopter classes: one Andy is trying to get the concept off the For further information regarding this having unlimited area fixed wings, and ground and into the "indoor air.” postal ornithopter contest, write to: the other with NO fixed area whatso Someone commented that at 40 de David W. Erbach, 1738 St. Mary’s Road, ever . .. then I could build whatever I grees rubber looses one-half its power. I No. 702, Winnipeg, Manitoba R2N 1G8, please with no one putting boundaries Canada. on my creative thinking. After putting in
Whittman Tailwind Peanut built by Butch Hadland (left). Model is held by Peanut Proxy Bob Andrews picture of Opa Locka site. This Chairman Mike Arak at 1980 West Baden Peanut Gran Prix. Lirtstrum photo. is a Cat. II hangar with a 69 ft. ceiling.
60 MODEL BUILDER A cardboard template w ill aid in the making of curved balsa wing tips. Jack McGillivray launches his sensational tw in engined peanut for Accuracy and care taken while constructing the template w ill pay off the TV cameras of a Louisville Kentucky station. Andrews photo. in the final product. can believe this. Wonder how much is like. Maybe the model doesn’t climb, or 2. Someone was fooling around with left at 0 degrees? it flys in a straight line (right into the my model. This 57 year-old educator is seeking wall), spins in, etc. We all know that 3. My clay must have fallen off the magazines and kits for the kids in the feeling. Then, predictably, a bystander nose. area, as well as any club organizing tips strolls over with that question, "What 4. The rubber motor has gone dead you readers can suggest. happened?” "Well it was like this. . on me. Write to Mr. Earl B. (Andy) Anderson, Then comes the excuse, right? If we just 5. My cat chewed up the wingtip, and P.O. Box 323, Fort Yukon, AK 99740. had numbers assigned to the various it hasn't flown the same since. (MODEL BUILDER has decided to excuses we most often use, we could just 6. Someone just went through that help out by giving the Ft. Yukon area say, "No. 6,” or "No. 43,” or whatever. door and disturbed the air. indoor modelers a free subscription, Perhaps it would be less embarrassing. 7. The rubber band must have shifted wrf) Well, here are a few good ones to start to the rear and changed the balance. EXCUSES BY NUMBER off the list. Maybe you have a favorite 8. It must have gotten damaged on Sometimes we launch our models and one you can add to the list. things just don't go as well as we would 1. My downthrust fell out. Continued on page 91
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JUNE 1983 61 Bob Haight's beautiful Handley Page Helena (H.P.42) failed to make its qualifying flight due to rain swelled wheels which prolonged the taxi. This incredible free flight model is powered by four Astro 035 motors. 9th ANNUAL Astro Electric Championships PART TW O By BILL STROMAN . . . The contest director for the 9th Annual Astro Electric Championships reports on the free flight events which he ran. For additional contest coverage, see page 14 for Astro Champs Part I.
• “ Electric free flight sure has come a seconds! We are attracting more juniors flight of over five minutes, just as an long way in a very short time.’’ This was to electric free flight now, which is very example! my most recurrent thought while I was encouraging. Electrics are a good way to The largest turnout was for endur running the F/F portion of the 1983 get started in powered flight, as there is ance, in which we had ten entries. Astro Flight Championships. I remem less mess, no fuel or oil, and onedoesn’t Unlike some R/C pattern events, there ber when (just seven years ago) flying have to flip the prop, just flip a switch were no two models alike. Seems like an electric powered model which could (“ No cut fingers, Mom!” ). everyone has his own method and style gain height from a hand launch was As the contest came between two of of flying this event. Barnaby Wainfan considered a big deal! Now the models our many Southern California rain had a flying wing that scored high, Joe can climb higher than 200 feet in 25 storms, I didn’t think we would get a Tschirgi had a model that reflected his very good turnout. I was more surprised flying of R/C sailplanes, very long and to see twenty modelers show up, some lean. Bob Smith, our only junior in the from as far away as Las Vegas and San event, missed third place by only three Francisco. As it turned out, we had good points with a Country Boy. In fact, the weather, almost no wind, cloudy skies, only scratch flight was my own with a and some light thermals. I did reduce modified Starduster (should have lis the maximum flight times totwominutes tened to Sal and not changed the motor for all except the junior event in case the location). wind came up. but it didn’t. The reason I Besides Barnaby’s original design, Jim left the junior flights at three minutes McDermoth had his original Hummer, was that I didn’t think they would and of course, Tschirgi's had his sail- exceed two minutes. I sure was wrong; plane-like original O.D. The remaining they all got flights of over two minutes, models were from kits or published Bob Haight launches the four-m otor Helena. and in fact, two of them got some three- plans of other designers. As one would Flight lasted only a few seconds. minute flights. Cynde Waddell had one guess, many of these put in flights of
Ferrell Papic's Blériot No. 7 Monoplane took second place in Free First place in Junior was won by Bob Smith who flew an 020 Flight Scale. Model is powered by an Astro 020 motor. powered Country Boy.
62 MODEL BUILDER Roy Mayes entered this jewel-like Dormoy Bathtub. Lots of detail, Jim Ogg flew this Astro 035 powered 320 Satellite very nicely, and flew like the real thing, and took first in Scale. took home third place trophy.
Bill Warner likes to wear his French cap while flying his scale Caudron Barnaby Wainfan loves flying wings. This one is a very stable Astro Simoun. Bill took third place with his Aero-Tropille. 020 powered beauty. Note pusher prop and tw in fins. over two minutes, in fact, Joe Tschirgi broken off on the second flig h t. .. back the design for an Astro 02 motor with maxed out in all three flights. to the drawing board! two Ni-Cad cells. The girls made the Replica 02 is an Old Timer event which The junior event had three entries, planes, and with some help, installed the uses the same planes as the regular .020 but what they lacked in numbers, they motors. Boy are we on to something! glow engine event. The only changes are sure made up in energy. Bob Smith had a Those darn models kept those two girls that we use an Astro 02 electric power great-looking Country Boy, and really running all day! As I insist on the system, a 25-second motor run, and we knew how to fly it. He got the highest modeler naming each model, one of hand launch. Jim McMahon's Power total time of the meet. I have had two them came up with the handle of “ Mc- house took first place in ihis event with young sisters really help me out in D erm othvolt” . The best thing was two maxes and a 76-second flight. Just to contests over the last year or so, Cynde watching Jim McDermoth as these show that the Powerhouse is a good and Kim Waddell. Now, their father, planes were flown, he really got a kick design, Joe Maher got second place with Roy, is a modeler, and between us, we out of them. one. Art Wahlstedt’s Stratostreak fol managed to convince the girls that they As some of you may know, my first lowed with a third, and my Valkyrie should build a model for this event. Roy love in modelling is scale. We had seven finished up the event. It also finished up thought that McDermoth’sTruant would the model for me, as the rear end was be a good design base, so we modified Continued on page 93
Cynde and Kim Waddell took second and third places with these two Joe Tschirgi's F/F Endurance winning airplane, the O.D Joe maxed McDermoth-volt planes. Note prize under wing. out in all three flights.
JUNE 1983 63 the fuselage, wrap it around the edge, pressing it in place with your fingers until the glue oozes through the crino line. Let it dry thoroughly. Now peel back the tape and apply glue for about two inches further along, grasp the free end of the tape and stretch tight around the radius. At the same time smooth out the wrinkles with your fingers and hold fora minute until the glue sticks. Repeat this procedure all the way around using a generous amount of glue so that the tape is well saturated. Apply two addi tional coats of glue all around the edge, allowing each to dry thoroughly. This adds greatly to the strength of the wing and prevents the edge from splitting. In order to save weight, colored silk was used for covering. Silkspan could also be used, but avoid colored dope except for minor trim. Stitch on the rudder and elevator using nylon string for the hinges. The center of gravity location was determined after a considerable amount of experimenting. The balance was achieved using five pen cells and one 30- volt battery in the battery compartment. There is plenty of room in the bottom edge. Double glue all butt joints to deck to move the batteries if necessary. insure strength and a smooth contour Plato...... Continued from page 17 Control is achieved by the Simple- when the sheets are curved. You should Simul system, a Mighty Midget provid now have a panel approximately 30 ing the muscle, still the most control for on the top of the fuselage for easy access inches square. Draw a center line on the least sweat. The ESSCO TRT receiver, to the receiver and actuator. This was both sides running 90 degrees to the and Crescent Puls-Air Pulser provide done with some trepidation as to its grain of the wood and the butt joints. reliable operation. The crank on the effect on stability. There was no need to Inscribe a 30 inch circle from the point torque rod should have a 3/8 throw and worry, however, as it had little effect on marked on the center line. For this the flight characteristics. In addition, be positioned to give 10 degrees down purpose, I made a trammel bar from a and 20 degrees up elevator. ground handling was much improved; piece of 1/4 square balsa just over 15 takeoffs were as straight as an arrow, and Give the radio equipment a final inches long, tied a pencil to one end and check and you are ready for the test “ greased" landings without nose overs, stuck a straight pin through the other at that are typical with low wing designs, glide. With the radio operating, set the a 15 inch center. Crude, but it works pulser going and trim in a little up . . . became routine. fine. Cut out the disk and sand with fine The fuselage is composed of a top and yes, I said up elevator. Now, launch sandpaper on both sides, leaving the bottom deck. The wing, a 30 inch disk of straight out, the plane will assume a nose center line visible for reference. Now 1/8 sheet balsa, is sandwiched between high attitude and land this way. You can sand a radius around the outside edge. the two, giving it its peculiar curve that rear back and toss the high hard one imparts the necessary rigidity in flight. This is the time to do the finish sanding with the same result.. . nostall and dive, on the wing as it is impossible to do a The fuselage sides are made by trans but just a settling to a nice landing. ferring the outline from the plan onto a good job after it is formed. Measure If you are over the shock of seeing a over from the center line 11-1/2 inches sheet of 1/8 balsa, then tracing only the low wing, minus dihedral, glide without each side of the center, and locate the curve which is identified as the top deck cluttering up the landscape, you are lines for the fences on the top and line onto the balsa sheet. This line ready for powered flight. A good .15 bottom of the disk. It is important that extends from the tail end to “ B" and motor provides lots of power so it’s a down to the bottom edge. After cutting these lines are parallel with the center good idea to restrict the intake to cut line of the wing. The wing can now be and sanding the outline, carefully cut down the power on the first few flights glued to the bottom of the top deck, along the top deck line. If this is done until you get the feel of things. You can lining the center line of the wing up with accurately in one continuous cut, the stooge along with the nose up and not 1/8 notch for the wing is provided by a center point on the fuselage. Then, get into trouble. When you gain confi simply cutting 1/8 off the bottom of the glue the bottom deck into position dence, you can open her up, and with a lower deck with a straightedge. Using below the wing. Attach the fences on little down trim, Plato will really bore the two pieces as templates, make two the lines drawn in the exact position along. You can expect a quick response for the other side of the fuselage. This is shown on the plan in order to preserve to the stick in level flight. Full left or right a good time to make the four pieces for the same curve from the fuselage to the will turn Plato on a dime with a vertical the fences out of hard 1/8 sheet balsa wing tips. The remainder of the fuselage bank, but it will straighten out just as is straightforward and should present no using the fuselage sides to draw the wing quickly when the stick is returned to problems. section curves. Shape the bulkheads and neutral. Press the full on button, which assemble the top and bottom decks Before covering, the crinoline is on this system gives full left rudder and separately. Note that the planking along applied to the nose and around the edge full up elevator, and Plato will execute the top deck line is on the inside and of the wing. The following technique for flick rolls at the drop of a hat. Plato flies flush with this edge, and the same around the wing is suggested; Cut out well on rudder only. With escapement applies to the planking along the bottom strips of crinoline 1-1/4 inch wide with a rudder only, reduce the throw of the deck line. straightedge. Fold lengthwise along the crank on the torque rod to 1/4 inch and At this stage it’s a good idea to get on center of the strip and crease to form a set the elevator at the position shown on with the wing. Select the harder balsa "V.” Spread a coating of fast drying glue the plan. sheets that you have for the leading on the first inch of the tape. Starting at So there you have it. A versatile and 64 MODEL BUILDER rugged little performer which will more than repay you for a few hours of careful construction. · A real helper: Once the • Frees hands to work on the model serious modeller • Saves model from damage Fuel Lines . . . Continued from page 20 • Frees bench space has a go at it... • Holds model in any position mixture. As you’ll recall from basic Total versatility: physics, when a gas is compressed, both • Easy attachment, two bolts pressure and temperature increase • Mounts on any workbench proportionately. Furthermore, pressure / τ • Adjustable height and temperature changes are inversely • Work sitting or standing proportional to changes in compressed • 360°rotation horizontally volume. Thus, if the volume is squeezed I he won’t go • 360°rotation cordwise in half, the pressure and temperature • Quickly folded and stored double. As the piston nears the top of without it: the compression stroke, the tempera Multi-purpose: ture of the gas increases, which aids the Master Jig 400' • Radio installation ignition process. In our glow engines, •Patent Pending • Engine installation the element (represented by the small • 360°access for fiberglassing One of a kind: • Provides total access for painting circle at the top of the domed chamber) Master Jig 400 is in a world of its own. initiates combustion. In the drawings, • Covering with plastic film It's the only true utility handler you can • Set incidence the unburnt fuel/air mixture is depicted buy, because no one else builds anything by dots. The absence of dots represents • Check CG like it. • Jig for setting dihedral burnt gases. As the flame front (repre • Straighten warped wings sented by the jagged lines) moves outward, the burning accelerates be Lifetime investment. The Master Jig 400 cause of radiant heating of the rest of the is priced at $129.95. That's the price of a unburnt gas combined with the tem good kit or an engine. But this is an invest perature increase associated with the ment that will last you a “lifetime.'' Here’s final part of compression. Combustion how to order: Direct from Tide Distributors, is just about complete as the piston Inc. (no mark-ups). Your Visa. MasterCard, passes top dead center as shown in the bank check or money order means prompt second drawing. With the end of the delivery. burning, the chemical conversion of TIDE DISTRIBUTORS, INC. mass to heat energy is complete, and the P.O. Box 317/Dept. MBM 683 heat has proportionately increased Minto, ND 58261 pressure to do the work of pushing the (701)248-3001 Days piston downward (third drawing). All (701) 352-2667 Eves very neat and tidy, and our engine Master Jig is priced at $129.95 plus $5 pumps out the horsepower for our For perfect painting, the Master Jig 400 for postage and handling. Please send models! Except . . . sometimes things holds the fuselage with stability. The m e_____ Master Jig(s). Enclosed find can go awry. mount is safe and simple. Master Jig 400 will not allow the model to move or swing a check for $ ______There may be a variety of reasons, but Card No. ______for illustrative purposes let’s just con as you apply paint. In addition, Master Jig sider an example of detonation . . . a 400 offers you the opportunity to paint Exp. Date from a constant light source and runs will most common ailment of high perfor not start since you can rotate the model N am e___ mance engines. In the fourth drawing, while painting. Address _ the combustion chamber is smaller than the first three. That means a higher Multi-mount: State,Zip compression ratio and higher gas tem • Radial or beam mount on fuselage Phone (. .). peratures as the piston approaches top • Fuselage attachment using wing bolt Free Brochure! Want to dead center. When you add to this holes know more? Send self- radiant heating, the gas can reach the • Fuselage cradle addressed, stamped en • Wing mount with wing bolt holes temperature of self-ignition. If it does velope to our office listed • Wing mount with cradle above. reach that temperature, it will explode. That’s a rather rough physical shock to an engine. If detonation continues, could want an explosion in the cylinders This versatile throttle can be used with overheating will soon follow. Under of his engines . .. the same type that any modern radio and any commonly conditions of detonation, the cylinder, likes green cheese. · available flight system, but follow Mitch’s piston, and head are deprived of the advice and fuse the battery pack so that cooling effect of the unburned fuel/air Vantec won’t have to prove how good mixture as it awaits the burning flame Electric...... Continued from page 27 its service department is. front during normal combustion. As you Note: I also use an Astro Flight 4023 can well imagine, overheating really on/off throttle control, and an Astro aggravates things. If it continues, engine no longer worked. I packed it up and Flight 4023R on/off throttle with voltage damage is a sure bet. returned it to Vantec with a check for regulator that eliminates the receiver The above sequences happen rather $15, and two weeks later received the battery pack.” quickly . . . in micro seconds. However, throttle back in time to put it back into Thanks, Bruce, for the excellent re normal internal combustion of a fuel/air the repaired Bushmaster. I was off flying port. Vantec sent Bruce an update on mixture is a relatively slow process their throttles.. .some of the specs have again. compared to the explosive detonation been changed slightly. The case is now "M y overall opinion is that the ET-3 is of it. 3.125 X 1.625 x 1, and the weight is 2.5 Guys, I usually strive for objectivity, a well engineered option for the flyer ounces. It only draws six milliamps at leaving personal opinion aside, but in who wants fully proportional speed idle, and will handle 25 amps continu this instance, only some kind of a nut control for his electric powered aircraft. ously or 50 amps starting surge (wow!).
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Loss at 20 amps is 1/2 volt, quite good. finished in a natural wood finish, with a Championships elsewhere in this issue.)· Moderate air cooling is needed above 24 blue motor hatch. The wing is 424 square volts, 15 amps (again, this is very good, it inches, I used a Keller 30/12 (cobalt), shows little heat generation, and is very total weight was 68 oz. including 14 NUrnberg...... Continued from page 31 efficient). sub-C cells, and landing gear. There is provision for centering the "The loading is 21 oz./sq. ft., which In addition, there were a large num throttle for the various radios with a makes it an easy flier. I added wheelsand ber of smaller companies from through small screwdriver, and you can reverse steerable tail wheel for takeoffs and out Europe, some familiar to those of us the effect of the stick throw by cutting a landings. The plane flies ‘very, very’ well. who have been to Europe or have jumper line if you wish. This means that The ailerons, coupled with the no perused European magazines. Still, if the control stick moved fully up gives dihedral flat bottom wing (I think it is there were many companies completely "off," not "on,” cut the jumper, and semi-symmetrical, mp), make it respon unknown to me, many with interesting fully up will now signal full "on.” Very sive. With the 14-cell pack the motor and worthwhile products. handy! The Vantec address for further turns a 9x6 prop at 10,000 rpm. The plane Even the people were color coded! information is 15445 Ventura Blvd., Suite is fully aerobatic from level flight. The Everyone was given admittance badges 10-281, Sherman Oaks, CA 91413. power duration full-on is three minutes, in different colors, so that you could tell Last month I talked about the IBA 45 seconds, however, it will fly for 11-1/2 at a glance whether the person you were ready to fly planes from Germany im minutes if the motor is used only to haul talking to was another displayer, a ported by Wilshire Model Center. Since it up, then shut off to glide down three German buyer, a Foreign buyer, etc. Us then I have had a chance to see the IBA times. A 9x4 prop on the 14-cell pack will Press folk sported grey/black badges. PB 26 motor glider in action, and I got an turn at 11,200 rpm, and the power lasts, Product-wise, the Europeans are not excellent flight report on the IBA PB 24 full-on, for 4-1/2 minutes. With 12 cells taking a back seat to anybody. Though as well from Scot Clark. the 9x4 will turn 10,200 rpm with a motor somewhat expensive, the general prod The IBA PB26 has to be seen to be duration of 5-1/2 minutes. Take your uct quality is high, often higher than believed. It climbs at better than a 30 pick. that which we see here. Though by far degree angle, and in 1-1/2 minutes it is "The plane did have one major prob the greatest majority of items are made almost out of sight. It has a wide speed lem. It was ‘twitchy’ as purchased. It on the continent, you still see foreign (to range, which is just what the rules for F3E would lose lift when it was nose down them) products which have gained require (half of F3E is duration, half is (i.e., it tended to dive. mp). The hori international acceptance, such as Enya speed around a course). There were two zontal stabilizer leading edge was low and OS engines, and it was like seeing an of them entered in the Astro ’83 champs, ered by 1/8 in. to increase the negative old friend to run across names like and they took first and third respectively. incidence of the stabilizer. This solved Goldberg, TopFlite, Novak Electronics, It was easy to see why these planes hold the problem. The IBA is the best plane I X-acto, and others, when visiting the the European championship in F3E. have ever flown.” booths of some of the general suppliers. Mike Charles, who won first, powered Thanks, Scot, for the report. Hans The hobby has developed along his IBA PB26 with a Geist 60 cobalt Weiss got the same report from Scot, so slightly different lines in Germany, and motor, and Roger Roth, who took third, the "fix” is getting to be widely known. apparently throughout the continent, powered his with an Astro 40 cobalt. The IBA is handmade, and 1/8 inch than it has here in the U.S. Control line is Mike Charles uses 24 Sanyo sub-C’s in could easily represent normal variation still much in evidence, though I didn’t his! The specs on the IBA PB26 are: 2.6 in any plane, so it is good to know how to see a single free flight model, probably meter (10 ft.) span; 1.8 to 2.1 kg flying handle it. due to the lack of flying fields. Sail weight (5 lbs.). The power can be any The IBA PB24 is also available from planes, including some really large thing from the Astro Challenger 25 Wilshire Models for $240. sailplanes, are found in great numbers, (cobalt) to the Geist 60. One last item . . . Hans sent me Wil and seem to be the recommended way The price is $259.95 from Wilshire shire’s latest catalog, and it is a goodie. If to learn to fly over there. Scale, includ Model Center. For that price you get a you want to see what "the latest” is in ing large scale, is very popular, and of plane that is ready to fly, with a fiberglass Europe, this is where you'll find it. It is course, there are numerous sport and fuselage, balsa sheeted wings reinforced illustrated, with very complete descrip trainer designs available from every with fiberglass inside (not a foam core), tions of the planes and their prices. The major manufacturer. Boats are popular, and a clear, smooth sanded resin finish, catalog is $2.50 (less than most maga with much more complicated race which is very attractive. If you want zines) from Wilshire Model Center, 3006 courses than the ones we run on here in quality and the state of the art, this is it. I Wilshire Blvd., Santa Monica, CA 90403; the States. Cars, too, are much in de was very impressed with the perfor (213) 828-9362. I find myself going back mand, with all major companies having mance I saw at Mile Square. to it often, just to browse and dream! them, and many small manufacturers I’ll run Scot Clark's report on the IBA (Be sure to read Mitch Poling’s and Bill devoted strictly to them. In that too, PB24 in Scot’s words: "The plane came Stroman's coverage of the Astro Flight there are some deviations from what is
66 WHEN CONTACTING ADVERTISERS. TELL ’ EM MODEL BUILDER SENT YOU! MODEL BUILDER T O P F U T E
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For our latest catalog and prop chart, send request with $1.00 to Top Flite. brought back some fond memories of time spent in their company, memor able meals, and (hard to find in South ern California) remembrances of a walk It’s What’s Up Front! through one of Germany's hundred- foot-high pine forests in a foot of freshly fallen, clean snow. It was “ Fasching" time in Germany, the pre-Lenten car PUT AN H.B. ENGINE UP FRONT! nival season. I was a guest of some of my new friends at a Fasching costume ball, where, amidst four-hundred-or-so cele brants, I managed to find a young lady sailplane pilot who offered to show me the alps from her ASW-13. Except for the fact that it was two in the morning, and it was snowing so hard that anything with less instruments than a Lufthanza 747 was grounded, I would have taken her up on it. However, that is one date that I intend to keep! In general, the language is not a H.B 61 P.D.P * problem, even though by no stretch of •Perry Directional Porting the imagination can I claim to know TOP PERFORMANCE on F.A.I. FUEL! German. I did increase my vocabulary H.B. Engines offer a full line of model engines, a complete however, enough to know that in choice of accessories and replacement parts. Write for FREE COLOR C ATALO G Bavaria, instead of "Guten Tag" (Good day) as they say in the rest of the country, h b - e n g in e s you say "Gruss Gott” , and an egg is not Madam WGarmary an "e i” , but a “ gagali". Actually, at most BAVARIAN PRECISION PRODUCTS CO. · PO Box 6. Dept C. Ne# Canaan. Connecticut OOEMO H of the booths I visited, and I missed few, I always found at least one person that yet seen here in the U.S. is a plug-in spoke enough English to get me by, and panel which includes and remembers most of the young people have studied it all trims, rates, throws, etc., which are in school. It is not at all uncommon to critical to a particular airplane. This hear two Europeans from different panel is set up as necessary for one countries conversing in English! plane, then, when you change to an Even in Bavaria, in below-zero tem other plane, you also change to another peratures, time, as the saying goes, panel, which of course you’ve preset as marches on, and all too soon it was time necessary for that particular airplane. to start back. First, however, it was back This is great for competition work where to Frankfurt and Rhein Main Air Base for you have a backup model, and where a couple of days for a homecoming of you wish to fly different events with the sorts, as I spent a lot of time there during same transmitter. Some of the systems my Air Force flying days. During the that I saw featured a type of add-on time, I lived in a small town on the decoder which is plugged into the last outskirts named Zeppelinheim, which channel of the receiver, and which was the home of the German Zeppelin divides that channel into a number of industry many years ago. There is a on-off functions. There will be more lighter-than-air museum there now. information about these strictly elec Then, it was back into the 747 for the popular here; a lot of glow engine tronic developments in my “ Electronics trip back home, which is always a little powered, off-road equipment was seen, Corner" column in future issues, in longer due to the winds, and a stop in very sophisticated and complex. There order to save some space here. San Francisco. Even so, I left Frankfurt at were no old timer airplanes to be seen, With the idea of saving space in mind, two in the morning, and was back in Los but there was a large variety of R/C as there is only so much that can be Angeles International at two that same vehicles. I saw operating bulldozers, crammed into the available space, I will afternoon. To the last, my German earth movers, large trucks, a row boat cut down on the words describing friends pampered and spoiled me. with a little man actually rowing away. products, and will show you as many During this flight home, I was a guest of There was an R/C wina-surfer, a rick photographs as possible of the things I Captain Hacke and his crew in the shaw, and even an R/C shark, using the found interesting, though it can only be cockpit of the 747. A most interesting mechanics from a submarine. It moved a small portion. I am not including visit. . . what a fantastic machine, I wish its fins, and very realistically snapped its company addresses, prices, or much it were possible to describe it in detail. jaws shut. information other than what can fit into Enough to say that the degree of sophis Generally, radios are developing a two-line caption, however, all of that tication between it and the early C-54’s along a different line in Europe, with information is here, in my mountain of previously mentioned has to have been much larger transmitters than we see catalogs and brochures. If you are in experienced to be believed. But that is here, all designed to be tray supported. terested in any of the items that you see the way progress has been in aviation, They feature a lot of programmable pictured, or in something else European what we then believed to be the ulti flight buttons, and many more options that you have heard about, drop me a mate is now only a museum piece. are available to the buyer of a basic line, including a business-size SASE and I Comes midnight, the coach turns system than with U.S. sets. Included are will gladly send you copies of what I back into a pumpkin. It was all extremely most of the things we see here, switch- have, or at least an address where you enjoyable, and I will do it again some able servo directions, variable throws, might get further information. day. The Nurnberg Fair is held annually, low rates, exponentials, mixers, etc., It wasn’t all work at Nurmberg (but in early February. I recommend that you many of which are available as a plug-in don't tell WCN), there were some fringe keep it in mind if you have any plans to option which can be added later by the benefits. I made some friendships that travel to Europe around that time. It owner. One feature which we have not w ill last the rest of my days, and I would certainly be worthwhile to in-
68 MODEL BUILDER elude Nurnberg in your plans. When you do, I hope that you have as enjoy able a time as I did, for which I want to s m n m m å arøsbasøg* thank my German friends, with a heart felt “ Danke Schon", and until next time, ilUJHl /LJUM/dULJiba ii3iíJ* "Auf Wiedersehen". · BUILD WITH THE WORLDS' FINEST PARTS FROM DU*BRO Electronics . . . Continued from page 33 HINGES KWIK HINGE SLOTTER consumed, divided by the applied volt SM ALL NYLON HINGES age. So if your iron is rated at say, 40 Easy to install, precision molded, rigid watts, working from 110 volts, it is using nylon hinges are flash free. Each is .36 amperes. Use a one-amp diode. locked together and checked for smoothness at the factory. Ideal for If you wish to install a permanent smaller airplanes. Six holes in each high/low switch on your iron, use one of side give DUBRO hinges maximum those in-line switches as are often found holding power. installed in the cord of table lamps. Cat. No. 118 (6 per pkg.) $1.00 You’ll find that one of the conductors Cat. No. 119 (15 per pkg.) $1.95 goes all the way through the switch, the other is cut and attached to two screws STANDARD NYLON HINGES inside the switch, which then makes or Also easy to install with the DU BRO KwikHinge Slotter or a knife blade. breaks the circuit. Install the switch as (They are as strong, smooth and safe normally intended, then add the diode as the smaller hinges. between the two screws, right inside the switch housing. It works by shorting out Cat. No. 116 (6 per pkg.) $1.10 FOR LARGE Cat. No. 117 (15 per pkg.) $2.49 AND the diode in one position, for high heat, SMALL when the switch is in its normally ON (or HINGES closed) position. In the OFF position, HEAVY DUTY V. scale HINGES which now becomes low heat, the Built to take heavy loads. DU BRO Three hardened steel, black oxided blades switch is open, and the iron is getting its heavy duty hinges are V«” wide by fit neatly in your No. 2 X-ACT0® knife handle reduced power through the diode. *1 3/8" long and .040 thick. They and work in conjunction with our alignment use a 3/64" dia. cotter pin for max. jig that features three interchangeable snap- The same circuit will work with in convenience and strength. on guides. For precise hinge installations. candescent lamps, any resistance-heated Cat. No. 257 (15 per pkg.) $3.75 Cat. No. 216 Complete set $1.95 appliance or tool, DC and universal motors, but not with transformer oper ated devices or fluorescent lights. In this E-Z CONNECTORS SN A P -O N OR PEEN ON application, the polarity of the diode is Connectors. Especially not important, it can be installed either made to hold tight on way. any size control arm. These DU*BR0 “SNAP-ON" A BETTER MOUSETRAP new snap-ons can safely be BALL LINKS I had a note from Paul Maharis, in Kew used over and over again. A Washer is provided for a Bolt on links, threaded links or Gardens, New York, who writes: "Sev permanent installation. links with rivit shafts take care of eral of us flyers have L.R. Taylor and Ace Cat. No. 121 $.98 (pkg of 2) any misalignment. Tough nylon link R/C Ni-Cd chargers and cyclers. They all snaps on and holds tight. Excellent for offset steering, throttle and work fine, but why isn't there a Ni-Cd DUBRO KWIK-LINKS & servo hookups. (5 piece set) charger/cycler that us R/Cers can plug NICKEL PLATED SOLDER LINKS our transmitters and airborne packs into Tried and true spring steel Cat. No. 180 (Bolt On) $.85 Set and forget about them overcharging. A Kwik-Links are ideal for any Cat. No. 181 (Threaded) $.85 Set charger/cycler that will monitor our Ni- control linkage. Nickel plated Cat. No. 182 (Rivlt) $.85 Set solder links will not corrode Cds to full charge, then trickle charge and make an attractive and them indefinitely .. . one week, one easy to solder connector for C ■ B S S S month . . . one year." servo or hom. Lew goes on to remind us that such a Steel-Cat. No. 109 (2) $.75 HEAVY DUTY 4-40 system exists in our automobiles, and Solder-Cat. No. 112 (2 with 2 link BALL LINK that it seems that something similar guards) $.69 could be made available to us R/Cers. Well Paul, something like that is easily NYLON KWIK-LINKS AND MINI-KWIK-UNKS within the reach of our present tech Made for self threading, these nology, but it isn’t within the reach of "sure-lock" links for any throttle Shown actual size, this new hefty, our pocketbooks. You see, one of the hook up. The Mini-Links are only f ball link is perfect for any V« scale features of the Ni-Cd battery which V«" long. application. Four piece set includes makes it so useful to us also creates a Standard-Cat. No. 122 (2)$.39 SOCKET HEA0a new, BOLT heavy duty nylon socket. Cat. No. 259 $1.25 problem when it comes to this type of Mini-Cat. No. 228 (2) $.39 AND BLIND m NUT SETS M charging, and that is the fact that it has PLATED STEEL T-PINS essentially a flat voltage curve through out its useful life, right up until it reaches its critical voltage, at which time its Strong smooth and sharp in three For those who prefer socket head bolts. 11 popular sizes. 100 pins per package. Includes 4 each of Bolts. Flat Washers, Lock voltage drops right off very rapidly. By Washers and Blind Nuts plus one Allen contrast, the wet cell battery, as used in Γ Cat. No. 252 $1.50 Wrench. 17 piece set. Two sizes. High our automobiles has a very gradual 1VT Cat. No. 253 $1.75 strength steel. V /t" Cat. No. 254 $2.00 voltage curve from its discharged up to Cal. No. 129 (4-40 x 1)-$1.10 (4) fully charged state. And it is this voltage Cat. No. 130 (6-32 x 1)-$1.10 (4) which must be measured accurately, and used to trigger a charger into its DU'BRO 480 Bonner Road proper state. PRODUCTS INC. Wauconda, Illinois 60084 JUNE 1983 WHEN CONTACTING ADVERTISERS. TELL ’EM MODEL BUILDER SENT YOU! 69 reversed, there will not be any voltage 63 3/8" Span 1': Scale .60 Engine T6, SNJ, Harvard 8 ' j-é lbs.—Ready to Fly on the opposite side. Diodes are rated as to their P.I.V. (Peak This model has been molded in Inverse Voltage), which is the maximum rigid eurathane foam with a voltage they can withstand, and current white epoxy jell coat surface carrying capacity. Until you get into that picks up a great amount of detail. Fuselage, wings, ailerons, charger circuits, most of our applica fin, rudder, stabilizer, elevator. tions are well within the limitations of ft cowl molded and ready for most diodes. In chargers, obviously, the assembly, installation of diodes must be capable of handling the equipment and painting. All voltage and current requirements of the hardware. including scale circuit. We work with relatively low wheels and struts. Many extras. values, so again, most diodes intended to be used as rectifiers are more than Suggested List: $28 5 F a c to ry D ire c t: $ 2 2 8 adequate, though it is still a good idea to Send SASE for brochure check the ratings. Basically, there are two types of diodes Great Lakes Model & Mold Co. PO Bo, 3bJÄ MI48763 that you will run into, germanium and silicon. These names are in reference to skill and experience, I was able to get it the materials from which they are made, a l l n e w ; going in a matter of minutes. Actually, it which gives them some slightly differ CUSTOM SCHNEURLC. wasn't at all hard to do, and it took only ent characteristics. Silicon diodes are in the application of a couple of basic much greater use, but you should always COX 009 ENGINES! procedures. use the type specified. Racing
70 MODEL BUILDER The C H A N N E L 11 ILLUSTRATED Improved Silver Seven FREQUENCY FLAG SYSTEM To comply with the AM A’s phase-in plan for the the new frequencies, Ace has available the frequency flag system to attach to your antenna to identify the channel you’re using. For each channel used, you'll need a hardware set and the appropriate two flags to match your channel number. Ribbon is furnished with the flag. 6 0 L9 2 0 -Frequency Flag Hardware .7 6 60 L91 0-Frequency Flag 0 /Black .7 6 6 0 L911 - FVequency Flag 1 /Brown .7 6 δ 0L912-Frequency Flag 2/Red .7 6 The Silver Seven System is one o f the finest quality, most sensibly 60L91 3-FVequency Flag 3/Orange .76 designed and engineered, truly economical, personally programmable 60L914-FVequency Flag 4/Yellow -76 radio systems in existence. 60 L91 6-FFequency Flag 5/Green -76 The Silver Seven is now improved even more, along with the Silver 6 0 L916 -Frequency Flag 6 /Blue .7 6 Seven Receiver, it is now available with Ultra Servos. It is housed in 60 L917-Frequency Flag 7 /Violet .76 a new ivory, vinyl-clad aluminum case, with a new o ffset antenna. 6 0 L91 8 -Frequency Flag 8 /Grey .7 6 The Silver Seven is also available on the new frequencies. You can get your Silver Seven as a kit and build it yourself or they come fully assembled, tuned and tested. See our catalog for all configurations, options and prices.
Send 82.00 for our complete catalog. All Ace products are available at your dealer. If you must order direct, add 21.00 handling fee. Box 611 D, Higginsville, Mo 64 037 (816 ) 684-71 21 an inch, foot, etc. is pressed in place. over there is David Axon, the Official The whole process might become Regardless of the foregoing, the Registrar who was acting as the MAAA easier for you if you will only remember Hornet was a good home project for President in the absence of Dr. Bob that a meter, by international standards, learning about internal combustion Allen (who was with his wife during is equivalent to 1.65076373 x 106 wave engines. It’s just a shame that Lindberg childbirth). lengths (in a vacuum) of the radiation didn’t think to provide casting kits for Dave is one of those fellows who corresponding to the transition be this motor. people naturally gravitate to. Directly tween the levels 2pio and 5ds of the As pointed out previously in the after the Annual Steak Fry when the Krypton 86 atom. Bye! · Simplex Hornet article, the Hornet A wind and impending rain were ruining was not truly a Class A engine as its 5/8- the fun, all were invited to his large inch bore and 3/4-inch stroke gave it tent/awning adjoining the trailer. Natu Plug Sparks . . . Continued from page 37 approximately a .22 cu. in. displacement, rally, Monty and I attended this funfest a bit large for Class A with its limitation consisting of jokes, gags, and plenty of ground to five ten-thousandths oversize of .199 cu. in. good beer. and then lapped with the cylinder, Figures on the running ability of the After about an hour, one of the club making sure the piston was of harder engine are quite sparse. Ten-thousand members came in and excitedly an steel than the cylinder. rpm was claimed, but no propeller size nounced that their club banner had Also made of steel are the connecting was indicated. John Morrill, manufac been stolen. It appears that the custom rod and the crankshaft. Lindberg recom turer of the Simplex Hornet claims in the trailer park is for all C/L clubs to mended the crankshaft be hardened better figures than this for his engine. post their club flag prominently at their (after the flats are fitted for the breaker John does indicate that the Hornet as particular trailer(s). The object then is to points) and ground to suit the crankcase. designed would have problems getting try to collect your rival’s flag. Of course, Thecrankpin is simply riveted or screwed up to the 9,000 to 10,000 rpm mark. this assumes that you don’t lose your into the crankshaft counterweight The particular Hornet engine wedrew own in the interim, necessitating an flange. the plans from weighs in at five ounces, a exchange of flags. Probably the biggest problem facing very respectable weight for a small Upon hearing the news, Axon tore out the neophyte machinist was the handling engine. of the tent like a shot. Luckily he was and machining of the crankcase casting. It also might be worth noting that the able to spot the culprits, and in less than Chucking it in the lathe for the initial Hornet articles were among the last 15 minutes the prized club flag was again drilling and back cover work goes fairly done by Paul Lindberg for Popular flying at full-mast. easy. To drill and tap the top of the Aviation. That darn war ruined more Shortly thereafter, another group of crankcase to accept the cylinder would darn good magazines! modelers came over just as the New Year require a method of holding the crank CONTROL LINE AT MAAA NATS arrived. In the course of all the good case. Lindberg recommended using an Here was a great group of fellows, in wishes and hilarity, I raised my eyes to angle plate to bolt to the crankcase spite of the fact that old timer control spot the club flag in place. This would be holes. This portion of the work is ac line stunt has not really caught on as yet the perfect time for them to steal the complished after the crankcase bearing in Australia. The big O/T C/L spark plug flag, I thought. I was offered a beer, and
JUNE 1983 WHEN CONTACTING ADVERTISERS, TELL ’EM MODEL BUILDER SENT YOU! 71 Probably the most fun in this event came from watching Ford Lloyd and his partner, Max NichoTs, set up the models for judging in stand-off scale. No ques tion about it, Ford did a good job in judging, but the gymnastics he went through to get the proper perspective World War I isn’t Quite Over Yet! was highly entertaining. Ford was thor “ EINDECKER" E-Ill oughly ribbed at the Red Lion (local Please Include S2.00 Postage & Handling pub/restaurant) that night. Incidentally, for those modelers who Bolsa & Plywood Construction have never attended a meet in Australia, AT-6 "TEXAN”/ SNJ 55" Wingspan / For .35 to .45 Engines the outlying towns such as Horsham offer meals at extremely reasonable ΙΟ Ι' Wing 1 lo 4 Cu. In. E o g in ., GIANT R/C SCALE Morane “ SAULNIER” N * Beautifully Molded Fiberglass Fuiologo 1.500 Sq. In. Aroo Beautiful new production kits of old favontos You'll like rates. This year, as was at Camperdown * Detoll -Molded Tronsparent Canopy the rugged construction, fit ol the die cut parts. Both have e Rugged Fiberglo*« Molded Engine Cowling Compielo Hit $ 2 7 5 .0 0 a history ot contest wins Easy to build, superb in flight' four years ago. the favorite order of this * V» Plywood Firewall Hardware included plus S10.00 shipping & handling Please Indude $2.00 Postage & Handling * Formed dia. lending Geer leg» (Any excess refunded) writer was pepper steak at $4. Try getting e Rolled Plon* and Instruction» N Y residents odd 7V«% ___ 3-4 Chonnel R/C Systems S37.95 a dinner for that price anywhere!
29 Edgor Drive, Smithtown, New York 11787 Flying Scale is always fun to watch, NICK ZIROLI MODELS particularly Stand-Off which always in less than five minutes, I again looked start and run motors. You can really draws between 30 and 40 entries. If you up and the flag was gone! develop an ear for a motor set too don’t think the O/T flying scale events This time, despite all searches, threats, "lean” . are popular at the SAM Champs, then and cajoling, the flag remained un R/C SCALE you have another guess coming! found. Axon took quite a ribbing from Backing up a bit to Monster Scale For some of the following photos we the rival clubs and from his own club (where Monty Tyrrell flew his Norse are indebted to Tony Farnan who really members. man), Photo No. 7 shows the winner of did attend the Nats and take photos. The Then came the night of the Annual that event, Frank Curzon. Frank did his first is a Supermarine Sea Fury built by Auction (these Australians have some homework for this event as he had Norman Bell of the MARCS Club (Mel thing cooking every night of the Na improved remarkably in his flying tech bourne area). Photo No. 9shows Norm’s tionals). Monty Tyrrell was the auc nique from four years ago. beautiful Sea Fury at the Nats. His static tioneer. Numerous packaged items Despite the heavy wind, Frank was score was a bit low, so he was unable to were sold. Finally, one mysterious pack able to control the model to the extent place in the first three. age was brought out, and Dave Axon that he garnered enough flying points Now we come to the piece de resis was induced to bid on it. Naturally, the (to augment the scale points) to make tance, Photo No. 10 showing Monty fix was on, and Dave “ won" the bidding him a winner. Tyrrell’s scratch-built DH Fox Moth. This for the package. Upon opening it in Note the large crowd in the back model flies exceptionally well, and the front of the assembled group in the hall, ground. The Flying Scale events always wind did not handicap its performance the package contained the long lost club draw large crowds no matter where (in one whit. flag! More darn fun! Dave had actually this case, out in the rural area). The sight Unfortunately, I was unable to "assist” bought back his own flag! of scale replicas of full-size aircraft has Monty Tyrrell during this time as I was Regardless of what anyone else says an amazing magnetic effect on people. competing in the Unlimited Rubber about control line, these boys are a good FOUL-UP NO. 1 Event. However, Monty recounts his group. They have to be, as they are Whadya mean number one? This 10- official flight as follows: always in close contact around the field. day saga was one after another! Tony "Everything was working like a gem Photo No. 5 shows the winning twin Farnan, a well-known Australian mod for a change; the motor started easily, engine Douglas DC-3. Actually, the one eler and now distributor for OSengines, tuned well, and the model taxied well who should have won the multi-engine made a date to be picked up by Monty at under low power. ‘This is going to be it!’ event was Monty Tyrrell and his vener the Horsham airport. I thought. able Boeing B-17 of many years. The arrangement was for Tony to call "The pattern flying went excellently as "Helper" Pond was on hand again to us at the motel and let us know when he the Fox Moth was slightly overpowered, assist (?) Monty start all engines and get was leaving. Monty failed to receive a hence the high winds had only a mar the model into the air. During the message, so he promptly called Farnan ginal effect on its performance. starting of the engines, one appeared to to find out what his status was, only to "I completed the pattern, made a be a little out of “ sync” , so Pond started discover he had already left. Still no super landing, then taxied across the to needle the the recalcitrant engine. word from Farnan. Matter of fact, we field to the judges, brought the model Naturally, a finger got in the way and was never did see him. up to a stop, and killed the motor. Then I badly cut. Did our hero Tyrrell ask if Upon returning to Melbourne after announced, ‘Gentlemen, landing and Pond was all right? No! He simply the Nats, Monty contacted Tony at his taxi maneuver completed’. exclaimed, “ You bloody A! You stopped lace of business. It turned out that Tony “ The judges stared back at me until the engine!” With sympathy the only ad flown up on a charter plane, landing one of the judges gravely nodded his thing you can find in the dictionary, at a different location. Upon arriving at head and said, ‘Very impressive. How nothing to do but wrap up the cut and the Nationals, he claims that he took a ever, your group of judges are down at get the motor started. The grass proved flock of photos and went back to work, the next table.’ ” the undoing of the B17 as it was not cut completely missing the gang. How we What can you say, we wuz robbed close enough to allow the model to gain ever missed him I don’t know, but we again! speed. Then too, one of the tanks sprung sure did suspect he was pulling our leg. Incidentally, if the readers are inter a leak and absolutely refused to stay full Anyway, as can be seen in Photo No. 8, ested in this particular model, the writer long enough for all four engines to get Tony and his son showed us around his has the rough sketches with which to the model airborne. We wuz robbed! establishment. His spare parts setup was base a plan and an article for a possible (again!) just tremendous as was his display room feature in Model Builder. One thing for One thing can be said for control line, where this photo was taken. We all went sure, this size model (about 5 ft. wing it does attract the younger set to it as can to dinner (lunch time to us Americans) span) is not going to require an arm and be seen in Photo No. 6. One unknown and thoroughly enjoyed ourselves for a leg to purchase all building materials. young modeler is about to launch his four hours. Needless to say, the beer Some interesting things were gleaned profile racer. To this writer, control line flowed in copious amounts! from Monty pertaining to the construc flying is the greatest way to learn how to STAND-OFF FLYING SCALE tion of his motor. He reveals that the 72 MODEL BUILDER FMS Hobbies Phone (801) 571-9222
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7FG/K 399.95 246.99 6FG/K 369,95 199 99 FMS SPECIAL WINCH KIT 5FG/K 349.95 184.99 Especially for the fun flyer. 5LK 279.95 168 99 Kit includes: 4 L 3 SERVO 209.95 129.99 Frame, Resistor, Drum, Foot Switch, and all needed wire and acc. ONLY 99.99 FMS Hobbies P O Box 8986 Hours. Mon. - Fri. 10-9 Sat 10-6 Sun (gone flying) VISA - MC Salt Lake City. Utah 84108 Utah residents add 5% sales tax Prices subject to change without notice cylinders were made from wine bottle In talking to Ranjit later on, it came published. No true old timer should be corks. It seems when Monty was build out that he provides a service for re without one! ing the model and casting for methods working engines. Upon asking the price, While we are at it, we are publishing to build the exposed radial engine that it turns out a good hopped-up engine Photo No. 14 which shows the new he noticed the cork in his wine bottle. will cost you $300, a figure very compar Chairman of SAM 35, Vic Dubery, proxy Geez! it was exactly the right diameter. able to USA motors. flying an old time Wakefield model As Monty remarked, "It was a good Photo No. 13 shows a typical lineup of known as the Cloud Clipper. Couldn’t thing I could only put seven of the nine Formula I racers. Inspection of the have picked a better man to fly this cylinders on, as I was having a tough models appears to indicate their designs model as Vic has been a member on time building while drinking all that are a little dated when compared to numerous Wakefield Teams represent wine.” Tyrrell isa very practical modeler! American counterparts. That may be, ing Great Britain. SAM 35 is lucky to have Probably the sadaest thing that hap but the boys were still putting up credit this man! pened later in the afternoon was the end able speeds in that blasted wind. of a superb flight by David Hull of Actually, when you come right down BURFORD ENGINE Victoria, who was flying his twin-motor to it, modelers are modelers, and they True to his promise, Gordon Burford Westland Whirlwind all done up in are always willing to talk about their did send parts to a Deezil. He is propos World War II colors. Dave brought the models, engines, and flying. One can get ing to manufacture an initial lot of 500 model in for a long, “ hot" glide, landed a real education in motors just touring engines. What was received was two smoothly, but did not turn it. The net the other half of modeling (the first half crankcases on a sprue which would result was the model plowed into a steel is old timers, natch!). make an excellent paperweight. (The pole which formed part of the restrain shape is right for standing upright.) See ing cable for the spectators. Photo No. SAM 35 YEARBOOK the April 1982 Model Builder for a write 11 shows the sorry state of the Whirl Although definitely not a part of this up on the Deezil engine. wind. Dave sez he will build another. report on Australian activities, the SAM Those interested in obtaining an 35 Yearbook is now available. Needless engine(s) (especially collectors) should FORMULA I COMPETITION to say, David Baker has outdone himself write to Gordon Burford, 86 Tierney Dr., What! Formula I flying being reported again in producing a softbound book Currembira, Queensland 4223, Australia, in an old timer column?! This columnist very similar in style and presentation to for particulars, possible price, and looks at it from the standpoint that all the old Zaic Yearbooks. ordering instructions. Burford has al model flying is fun, and it is always The price in American exchange is $7 ways made an excellent product, so you interesting to see what the other fellow which includes postage. This desirous will find you are not buying a pig in a is doing. book can be obtained by writing to poke! Photo No. 12 shows Ranjit Phelan of David Baker, 22 Ellington Rd., Muswell Also, for those who are interested in New South Wales who was heavily Hill, London N10, England. the “ Sesqui” engine as produced by Ivor favored to win the Formula I race. For those who are still hesitating, the Stowe (Ivor F), write to Ivor F, Box 11, However, he did get off a lean run book contains numerous old three- Doonside N.S.W. 2767, Australia. Ivor during one of his heats and that effec views, construction drawings, and many will be the first to tell you that he would tively did in his engine. sketches of models heretofore never never have made it without Gordon's
JUNE 1983 WHEN CONTACTING ADVERTISERS, TELL ’EM MODEL BUILDER SENT YOU! 73 FRANCIS SMITH’S SHIP YARD . P A . 19074
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guidance and help. These “ new” en . . . especially the incidence. If you use a again squaring from that line. Except for gines may be just the thing you are six-inch firewall, the Quadra will fit the first line drawn, most of the others looking for to power your favorite old nicely, and for those readers who don’t square off of the last line, or bottom, of timer. know, the Quadra prefers to be mounted the fuse. Now, if you prefer, you can go THE WRAP-UP upside down fas do most other gas ahead and draw in a top . . . but we If you think this description of my engines .. . aa). usually cut it later as one separate piece, escapades in Australia was hilarious, wait “ You also must know what airfoil you and make it fit whatever we end up until you see Part II, the free flight are going to use and have a plywood with. Note the forward part of the fuse section. With the darndest winds you airfoil template already cut out. I recom bottom has to be joined at the center. would ever want to cope with, the flying mend the NACA 2416, which is a nice This is no problem. Just butt them went on unabated. This writer has flown semi-symmetrical section; it allows you together and use white glue or epoxy, as in the wind many times, but everyday!?! to flip upside down and thrill the troops the entire front section will be doubled There were a flock of crackups! Stay without needing a lot of down elevator anyway . . . from the inside. tuned! · (I also like the 2415. aa) . .. and it’s fat "Remembered something you should enough to float in for a very slow, flaired have known from the start .. . that I landing. When making the template, prefer to run the flutes (corrugations) BIG Birds .... Continued from page 41 remember, after you cover the wing lengthwise simply because I think it with cardboard, its thickness will in looks better, but the other way will work many of you guys have asked for this crease to about 16-1/2 to 17 percent.. . fine, too. On drawing No. 3, I’ve shown kind of guidance, here are some which is still on the maximum lift up the location of the doublers with dotted swing. sketches and text that he “ writ by hand.” lines. Basically, you run the flutes per “ We are able to get six by eight foot “ Next, draw off the bottom of the pendicular to those in the fuselage sides. sheets of the stuff from a paper company fuselage as shown in sketch No. 2. Using The entire front half of the fuselage is in Hutchinson . . . a town about 60 miles the bottom rear line of the fuselage side doubled, as well as the tail section. Then from Wichita . . . at a cost of three dollars as reference, square off from that by use 3/8 or 1/2-inch triangular stock a sheet. It’s similar to the stuff most kit using (of all things) a good square. From lengthwise on all folds, top and bottom, manufacturers use in boxing up their the trailing edge of the wing, drop down as well as behind the firewall. This design kits. It is white on one side and brown on about five inches and from that point is nothing classy, just a long ice cream the other . . . that is, until you build it draw a line to the rear of the aircraft. The cone (or baseball bat), but it is strong! into an airplane and wreck it, then it is aft end will be about a half inch wide As with any other model, you have to brown on both sides. . .. or it can be one inch if you prefer. fuel proof the front section all the way “ The first thing you do is draw out a Actually, this width will be determined back to just past the T.E. of the wing. Use side view of the fuselage (I’ll explain the by how wide you want the fuse at the epoxy or resin. Any open flutes around easy-to-build box fuse as in sketch No. firewall. the wing area can be filled with caulk 1). The top of the fuse side should be “ So now you have the bottom (aft end ing. Generally, white glue works pretty used as a zero reference line and every only) drawn. Use the last line drawn as a well for gluing cardboard together. thing should be measured from there reference to establish fuselage No. 2. . . When doubling, I usually punch holes in
74 MODEL BUILDER the mating sides so that the glue will form little nails which really insure CANNON structural integrity. R/C SYSTEMS G-MARK ENGINES I "Oops . . . wait a minute .. . I forgot to THESE SUPERB NEW R/C AND U-CONTROL ENGINES tell you how I fold the darned stuff. At ARE MANUFACTURED IN JAPAN BY A L O N G ESTABLISHED SUBSIDIARY OF the fold lines, I prefer to cut through C ITIZE N 'S WATCH C O M P A N Y . THEIR PRECISION WORK IS EVIDENT IN THE DE (score) the inner paper using an Uber SIGN AND CONSTRUCTION OF THESE ENGINES. U-CONTROL UNITS PRODUCE Skiver and a ruler so the cut is clean and THE HIG H RPM'S EXPECTED FOR TOP PERFORMANCE. THROTTLE-EQUIPPED R/C straight. Only cut the inner side! Then, ENGINES PROVIDE RELIABLE LOW-SPEED ID L IN G , SMOOTH SPEED TRANSITION smush it down hard with the backside of AND GOOD TOP END PERFORMANCE, EVEN WITH MUFFLERS. ALL ENGINES ARE a Stanley knife or the handle of a EASY STARTING; MUFFLERS ARE STANDARD, ALL R/C ENGINES HAVE THROTTLES. screwdriver. This flattens all the flutes in the area of the cut so you get a good, .03 R/C .03 U/C quick, and accurate fold. G E-4011 G E -4017 “ Now, if you want more than a flat (03) top, cut out some rounded formers for (03 RC) $ 32.95 the top. Make a design to your liking, then cut the formers out of either card board or foamboard. The rounded top .061 U/C can be covered with what we call poster- board, which is just plain οΓ regular cardboard that has no flutes . .. like the kind your kids use in school. If this doesn’t appeal to you, use anything you .061 R/C feel comfortable with; both Mooney G E -4013 No. 1 and No. 2 used balsa. (061 RC) 4 f t R/C-C “ For the horizontal and vertical stabs x ' m FOR CARS A N D BOATS we just cut out the desired shape, and then ran a 1/4-inch square spar length wise, top and bottom, about 30 percent back from the leading edge. This will give you a kind of diamond airfoil. Cover the exposed edges with balsa about a 1/4 inch thick by whatever height is neces sary. This gives you wood to stuff the G E -4016 hinges into. Fill in joints between balsa (061RC-C) and cardboard with spackling. The size of the stab, of course, is a $ 38.95 certain percentage of the wing area . . . if you use an 18 inch chord by 90 to 100 inch span, you’ll need a vertical of G E -4019 .122 R /C about 11 inches high by 9 inches wide (3 0 -2F) TWIN (average). The horizontal should be about 9 inches by 30 (again, average $ chord). Make them any ol’ shape that 174.95 pleases you, but try to keep the area. By GLOW PLUGS NOT using the diamond airfoil, you’ll be INCLUDED. GLOW amazed at the torsional rigidity as well as HEAD & PROP the overall strength versus weight that DUAL BALL COME WITH GE-4015 you can achieve. BEARINGS • 03'S. (12-2F) "Okay . . . let’s hit the wing. We’re going to use strip ailerons on your first .15 R/C SCHNEURLE $ 99.95 monster. Make up ribs out of 3/4-inch thick blue insulation foam (first choice), CASH DISCOUNT PRICES SHOWN. Credit Cards 5% higher. or foamboard (second choice), or card In C a lif, add Soles Tax. Shipping $ 3 .0 0 . 20% Deposit on board (third choice). Any will work fine. COD's. Catalog 75ς US, $2.00 Foreign, Std. Discounts avai We will have only one I-beam spar in 13400-26 Saticoy Street North Hollywood, Calif^ 9160^ β β e — each wing panel (1/4 x 1/2 spruce caps) located about a third of the wing chord and for training wh. . . oops, I mean anywhere! Believe it as the gospel, back from the leading edge. Space ribs tricycle gear, they should be about an because over a dozen wings have been about 5 inches apart, except toward the inch aft of the balance point . . . and made this way and have never had a the root where they should be just three don’t forget some toe-in . . . aa) At the wing failure! The spars simply butt inches apart. ends of the L.G. block, and at the ribs, together. You don’t need a dihedral “ If you put the landing gear in the make 1/16 ply gluing plates. Cut out brace! I know that some guys won’t wing, then cut out a piece of 1/4-inch several gluing plates to fit around the believe that . . . so go ahead and make ply about an inch and a quarter wide by L.G. block and next to the ribs. This way your plane heavier by putting in a brace about nine inches long, and notch out you are gaining structural integrity in the with all that epoxy (yuk). the bottom of however many ribs need rib and L.G. block assembly so it won’t Of course, you must run vertical notching to accept it. Install this ply piece twist out of the wing. And if you do it this webbing between all the ribs (with the so that either its front or back butts way . . . it won't. possible exception of the outer two or against the spar, and so that it starts and “ Now you must establish the dihedral. three). Vertical webbing has been made ends on a rib. (However the ply plate is I recommend about three or four inches from plywood, fluted cardboard, and installed in relation to the spar, make under each tip (but whatever looks right foamboard, and all work equally well. sure the mains are angled so that your to you is okay). The most important key Install the webbing so it’s between the wheels are properly positioned: for a to achieving an indestructable wing is to spar caps and makes an I-beam section. taildragger the wheel axles should be get the roots to mate properly; it must Cap off the T.E. at the aileron gap with directly under the wing leading edge. be a perfect butt joint, with no airgaps balsa that is thick enough to hold a JUNE 1983 WHEN CONTACTING ADVERTISERS, TELL ’EM MODEL BUILDER SENT YOU! 75 words of wisdom and his sketches, WILLIAMS anyone should be able to turn out a BROTHERS good-flying cardboard birdie. I’d appre ciate hearing from anyone who does build one using this technique, and so PILOTS would Marvin. And don’t forget some STANDARD · SPORTSMAN pix to go along with the letter! RACING · MILITARY RETURN OF THE HUSTLER ΟΓ flying buddy. Al Willaert (A&M WHEELS ► Aircraft Supply, 1801 S. Crest, Carrollton, VINTAGE · SMOOTH CONTOUR TX 75006) wants everyone to know that BALLOON · GOLDEN AGE he's now taken over the Hustler engine . .. and that besides getting the new "A&M Hustler” on the market by May, his first order of business is to get all of the boxed-up Hustlers back to their proper owners. Most of the engines/ RA.RTS ► boxes had names and addresses . .. but PRATT* & WHITNEY · IE RHONE some did not. So if you haven’t heard from Al by now about your long-lost Hustler, do write or call him so that you and your errant engine can be reunited. DGA DESIGNS These guys do mighty fine work, as VICKERS · SPANDAU · PARABELLUM those of you who’ve bought aset of their "Davis D1K” plans know. Not only are SEND $1 FOR FULLY ILLUSTRATED CATALOG V Ě tu A m BÄOJ me their plans a joy to behold, but so are DEPT. MB 181 ST. SAN MARCOS, CALIFORNIA 92069 their designs as they put quite a bit of airtime on their prototypes to insure that “ When set, take the wing and whack it we get our money’s worth. Well, I just BIG BEAUTIFUL BOAT on the floor by holding onto one tip and received two of their new goodies: the smacking the other tip smartly. If you first being the Kinner Sportster plans.. . hear a ‘crack!’ take it apart, and this time and the second being the real surprise, a make sure the root ribs mate perfectly. great “ BIG Bird" pilot’s bust made out of Next, wrap the joint with fiberglass .. . latex; it’s outstanding. the same weight cloth used to repair Dave Reid’s work on the Kinner was a J-5 PICKLE FORK HYDRO UNLIMITED auto bodies with, taking the fiberglass labor of love, of this there’s no doubt. As 6 loot 5 inch long by 3 loot beam mahogany out about an inch beyond where the he’s had a full-size Kinner to work from, plywood kil A spectacular sight on the water sides of the fuse will mate with the wing. this has allowed him to turn out a very Get in on the giant R/C Boating Fun All wood kit 169.50 “ That's it. It’s all done but the paint, scale aircraft. As you can see from the Above kit c/w J-5 DRIVE-TRAIN 239.50 and you’ve only invested about a month pic, the Kinner is beautiful . . . and she of time, and 5 bucks in material, and flies every bit as good as she looks. If J - 5 ENTERPRISES maybe $20 in glue. you’re searching for a different looking, 256 Schuman Dr.. Newmarket. Alabama. 35761 “ OOPS! I almost forgot about the but excellent flying sport machine, one Phone 1-205-852-2566 P.O. Box 82 Belmont. Ontario NOL 1B0 firewall. The firewall needs to be half that will respond well with a Quadra up Phone 1-519-644-0375 inch ply. Just butt it up against the front front, and one that's got more “ charac and epoxy it on. If you want a cowl, then ter" than most, send for your set of tack glue a block of foam to the firewall, plans, pronto. sand it to shape, cover it with Saran Wrap As for their three inch pilot . . . well, hinge. The ailerons are made from card (extending the wrap onto the fuse), and he’s different from anything I’ve seen so board (fluted) that is doubled over itself then wrap it with fiberglass and resin. far. The pilot, his "leather” jacket, his and glued together. You then sand,and sand, and sand, and flying helmet, his goggles, and his red “ Cover the wing with cardboard, . . . then you prime and sand, and prime baseball cap are all made from latex . .. making sure the flutes run spanwise. Lay and sand, and . . . well. I’m sure you get and the instructions even tell how to out a piece big enough to wrap com the idea. Due to the Saran Wrap and the make "official looking” sunglasses to go pletely around the wing panel. The tack glue joint, the foam block will pop along with the baseball cap when he’s brown side is made from a lesser quality right off the fuse, and the 'glass cowl will flying private aircraft. By adding a small paper, so take a wet rag and dampen the come right off the foam block. piece of white material around his neck entire sheet on this brown side. Get it "If you build one just like this, you’re when he's dressed in his leather jacket, fairly wet, let it sit for a few minutes, and gonna flip your gourd over how great it helmet and goggles, the intrepid latex then try tearing off some of i t . . . which flies with zero-zero incidence . . . well, pilot becomes a WW-I Ace. should come right off. If it doesn’t, then maybe one degree positive in the wing. This guy’s not a shiny-faced, bug- try the opposite end. One corner or the “ Okay, now for your next set of eyed-looking yahoo like the plastic other will peel right off, and you just questions.. .TheTartanTwincameglow pilots we’re all so accustomed to. He’s strip all the brown paper off and throw it and remains glow . . . 1-1/2 to two got some wrinkles and character lines, away. If it gets too wet, or sits too long, ounces per minute fuel consumption and his skin has texture .. . along with a then the whole sheet will come apart...... fuel is methanol and seven percent somewhat large nose. He’s easy to color flutes and all. After you get the brown oil . .. no nitro, so fuel is cheap. I have (he’s already got a great looking flesh paper off, you’ll see just how easily it will had the opportunity to run the single color): just use some of your gal’s liquid wrap around a wing or any other Tartan also. I find it equally as nice to makeup and voila . . . a superb looking surface or form. Glue it down using start as the twin, and it has a ton of power pilot. moderate amounts of epoxy on the ribs; for only 1.3 cubes . .. and it’s smooth! You can position this latex pilot at any get the entire width of the rib coated "After building two cardboard BIG angle inside his jacket so that he doesn’t with glue. After both wing panels are in Birds, I can really appreciate this material have to stare stupidly straight ahead. He this shape and covered, you then epoxy for model construction. .. but I’m not as is not a full-figured pilot (sounds like a them together at the root with slow cure fanatical about it as some.” Jane Russell commercial) . . . he’s just a epoxy. So there it is, guys. Between Marv’s bust (oops), but one helluva good
76 MODEL BUILDER looking one, and will easily be worth the $11.95 DGA plans on marketing it for. At some later date DGA also plans to come out with two and four-inch sizes. Here’s their address: DGA Designs, 135 E. Main St., Phelps, NY 14532. . . and SOUTHERN PRO RETRACTS tell ’em BIG Al sent ya! •SlllfV·'s*F®08H SECOND ANNUAL NORTHWEST MODEL EXPOSITION They’ve needed something to fill the mid-winter void up in this part of the SERVO Formerly. country, and hobby shop owner Bob PRO-LINE Pfieffer knew it. So, Bob and the Mt. ACTUATED Rainier Radio Control Society started FOR and this expo bit. I wasn’t around for the first one back in February ’82, but I’m told it RELIABILITY SOUTHERN R/C started off well, and with the lessons learned in '82, Bob and the Mt. Rainier gang did a great job for 1983. This year there was a 60 percent increase in manu facturer’s displays, and a healthy 35 "IF THE RADIO WORKS THE LANDING GEAR WORKS. percent increase in spectators. The IF THE RADIO OOESN7 WORK, IT DOESN'T MATTER " NME will continue to be held every year SEE YOUR DEALER OR DISTRIBUTOR on the first weekend in February, right here in the Puyallup Fairgrounds, for an DAVE BROWN PRODUCTS indefinite period of time to come. Y’see, Bob has that first weekend reserved till 4560 LAYHIGH RD.. HAMILTON. OHIO 45013 Ph. (513) 738-1576 sometime after the year 2000. Anyhoooo . . . BIG Birds were there in force. I didn't count how many of them were on display, but it was a very your precious fingers to the blade when expected, humongous crowd, pilots impressive number . . . and the work tightening it as you do when tightening MUST pre-register if they want to fly . . . manship was better than ever. It was a “ Brand X.” The Uber has a SAFE, rear and pre-registration closes on August 1. mixed bag of designs, many still being draw-bar clutch that eliminates any So don’t dilly or dally! I have Festival scratch-built, like the Kawasaki-pow possibility of cuts or nicks. Second, in brochures! A request, together with a ered Shoestring (Goldberg had a great addition to this rear clutch, the collet stamped, self-addressed envelope, will kit some years ago; a BIG version, like design really holds the blade in place. get all the forms and info on their way this one by Bob Siegelkoff, should be a With “ Brand X” the blade frequently back to you within 24 hours. fantastic flyer), and the Spinks Akro- wobbles and comes loose, presenting an Here is some good news about the master (which Bob bought after the additional hazard to your fingers. Third, flying. . . Although you still can’t expect show ended). I’ll be sprinkling in pix of and still on the safety kick, the handle’s to fly as often as you might back at your the expo’s BIG Birds in the next few hexagonal cross-section keeps it from home field, the allocation of new fre columns, although you might want to rolling around on the workbench, or off quencies has made two separate flight check last issue’s “ R/C World” for Bill of the workbench and into your foot. lines a reality . . . so, along with the Northrop’s coverage of the big show. Fourth, the blades are about four to five comraderie and socializing, you should When he wasn’t in a corner of the Model thousandths thinner, and are made of be able to get in a fair amount of stick Builder booth falling asleep, Bill was stainless surgical steel; they are sharper time, too. (Some other problem areas busy taking a bunch of pictures. Actually, coming out of their containers, they that cropped up at the last Festival have this was the very first time that he and I strop easier, and they hold that great also been taken care of. We try real had met . .. and now I know why he edge much longer. And fifth, but by no hard!) frequently runs photos of himself back means the least important reason for Remember, you do need current when he was barely past the age of using Ubers is that you have a choice of AMA and FCC tickets to able to fly .. . puberty. bright, easy-to-see colors which helps but you don’t have to bean International Probably the wildest and most unex eliminate lost time while trying to find Miniature Aircraft Association member, pected testimonial I’ve ever heard for the knife on a cluttered tabletop (is although you’ll probably want to join any product came while Bill and I were there any other kind?). I can easily find before this four-day Festival is over in the booth . . . it was for the Uber my violet (passionate purple?) Uber. (August 18-21). Skiver knives. I had planned on a small Your knife and nine, vial-packaged ROC’S FIRST ANNUAL BIG BIRD BASH separate blurb about the Uber because blades (see pic) come neatly packaged in If you live anywhere in the Northwest, it’s turned out to be such a great tool (as a foam padded, guaranteed real wood set aside July 16 and 17 because the those of us who use it know...), but box . . . none of this plastic stuff. Puget Sound Rocs are sponsoring and then I figured I’d just as well include it So, even if you don’t have any pigs to hosting Washington’s very first BIG Bird here. The story goes like this... After neuter, you’ll find that the Uber Skiver Fly-In. I have complete info packages her husband bought some replacement will do the job faster and easier, and that available, so don’t hesitate to send for blades for his Uber Skiver and men intricate work will be much more enjoy one if you’re thinking about, or plan tioned how well he liked the Uber as able. Yeah, I did get mine gratis (it was a ning on coming. compared to “ Brand X" (as most do), this Channukah present), but that’s not the I’m the Fly-In Director, and I know housewife up and tells us: “ This knife of point; it is a superior tool, and, like the that everything possible is being done to yours isabsolutelythegreatest! I haven’t other tools I’ve mentioned, it deserves make this a G-R-E-A-T fly-in. As the Rocs been able to find anything nearly as to be brought to your attention. It’s are an IMAA Chapter, this two day affair sharp and as easy to handle for castrating definitely affordable (see the ad for will be run in accordance with IMAA our pigs. Thanks for making a nasty Uber Skiver in this issue), and most rules and guidelines. In other words, this chore so much easier!” definitely a “ better mousetrap.” will be the typical uncontest, no-prize And she’s right, y’know. This knife IMAA'S ’83 FLY-IN FESTIVAL (except for the flier who comes the does make any job a lot easier, and for a Don’t let time run out for you and farthest), relaxed fly-in that BIG Bird number of reasons. First, it’s a whole lot your chances to be part of this premier People prefer. . . which gives everyone safer because you never have to expose BIG Bird get-together. Because of the a good chance to meet old friends and
JUNE 1983 WHEN CONTACTING ADVERTISERS, TELL ‘EM MODEL BUILDER SENT YOU! 77 and let it set the alignment of the tail rotor coupler and bearings. Notice that the mesh of the tail rotor gear and main N O W ··· gear is of no consequence at this point. (I 4 NEW even drop the main shaft with gear SIZES! down and out of the way so I’m sure that Competition-Proven the gear mesh doesn’t interfere with the drive shaft alignment.) Once the tail rotor drive shaft is aligned with the bearings and gear, I tighten the mount OCTURA ing bolts to lock the assembly in place. The final step is to adjust the main shaft with gear up or down to set the X-SERIES mesh for the tail rotor drive gear. This may require a thin brass shim or two between the main gear and lower main PROPELLERS shaft bearing if the fit is too tight. (See, the extra brass shim material has come in X-tra SpeedL.X-tra Performance! handy already . ..) If you feel just the slightest bit of play between the two gears (when they are set at the tightest FOR PERFORMANCE YOU’LL BE PROUD OF... point on the main gear’s circumfrence) These, as all Octura Propellers, meet the most exact the mesh is correct. Noplaycangenerate ing requirements. Available now in beryllium copper. Fit 3/16" shaft. Check your local progressive hobby vibration and too much play will wear shop. out the gears prematurely. X440/3 RECOMMENDED To recap the whole process so you 3.5 OUTRIGGER X445 APPLICATIONS don’t miss the major points: X447 7 5 OUTBOARD 1) Engine mounting screws finger tight. .75 DEEP VEE X450 2) “ Bottom” clutch bearing in place. X455 3) Tighten engine mounting screws. 7.5 OUTRIGGER X455/3 65 SCALE HYDRO X457 65 DEEP VEE 4) “ Top” clutch bearing in place. X460 5) Set mesh of main gear to engine by X462 .65 OUTRIGGER moving main gear slightly. A 00 for •X467 go DEEP VEE 6) Install tail rotor drive shaft to coupler and let drive shaft set tail rotor drive ’ 7 3' indicates 3-BJaded Propeller gear assembly. 7) Adjust main gear up or down to set “SINCE 1954" proper mesh with tail drive gear. OCTURA MODELS. INC. 7351 N. Hamlin Ave · Skokie, IL 60076 Re-read the whole process again if it didn’t make sense the first time. After make new friends, to see what the other QSAA happening, you’d better get you can visualize what’s happening, I guys are building and flying . . . and to crackin’ because tne fly-in will only be think you’ll agree that each step flows find out how to do some things a lot open to the first 200 airplanes .. . pre into the next, with the whole method better. You’ll be able to fly as much as registration only! A reminder from Pat giving a superbly aligned drive system. you want to, (or not fly at all and just Bunker that, “ Birds must be quarter- In the next few months some interest show your new bird) as our new fre scale or larger, same as in previous years, ing reviews will be coming up: The new quency control board includes all of the and all planes must have been flown gasoline-powered Hughes 300 from newly allotted frequencies. before the fly-in.” California Model Imports will excite Bring as many BIG Birds as you want to WHAT — The 1983 Quarter Scale those of you who have always wanted a . . . the Mt. Rainier Club Field (known to Association of America Fly-In. Kioritz powered helicopter. Shortly many as "H og H ollow ’’) is big and WHEN — October 27, 28, 29 and 30. thereafter a close, in depth look at roomy, and there’s not going In be any Banquet, Saturday night, October 29. GMP’s new flag ship, the Competitor. registration fee! You’ll have a fantastic WHERE — Flying at the dry lake, static Hope to see you then. · view of Mt. Rainier from the field, so display at the Showboat Hotel, Las bring lots of film. We also have on-site, Vegas, Nevada. plug-in capability for a dozen RVs or WHO TO CONTACT — Pat Bunker, R/C Boats . . . . Continued from page 47 campers, and restroom facilities. A six- QSAA Secretary, 6532 Bourbon Way, Las channel radio will be raffled off. and Vegas, NV 89107, (702) 870-6076. in the same lane. It’s a real experience to throughout both days mucho door TIP OF THE MONTH prizes will be awarded to the lucky pilots "Never, ever, eat prunes when you’re drive this type of boat. . .. and we’re gonna have good eats famished!” Besides the boat and'hardware kit, available at my kind of prices. Al Alman, 2713 Alderbrook Court, Fisher Boats is also offering an epoxy You're not going to want to miss this N., Puyallup, WA 98373. Keep up the fiberglass radio box. The box was de ''Rocs First Annual BIG Bird Bash.” You good input, guys . . . I do appreciate it signed to be used in the 40-60 Canard, won’t have to be an IMAA member to . . . and don’t ever forget that. . . FLYING but it could also be used in any type of enjoy yourself, but you are gonna need SAFETY IS NO ACCIDENT. · model boating application calling for a current AMA and FCC licenses because radio box. The cost of the radio box and we are both AMA and IMAA sanc all the necessary fittings, cover, and tioned. Also, please keep in mind that gasket is $28.95. The radio box comes as a every aircraft scheduled to fly will Choppers . . . . Continued from page 43 kit, and it is necessary to glue the lid undergo the IMAA Airworthiness In mount to the box and drill the holes for spection, and that there will be NO test whole tail rotor drive gear and bearing the lid fasteners and pushrod seals. flying of any BIG Bird during those two assembly must be a smooth fit between After reviewing my notes about the days. the side frames. Sliding the assembly in Fisher Boats 40-60 Canard, I see there are Seeya in July... place and inserting the mounting bolts a few things I forgot to mention. The 40- 1983 QSAA FLY-IN without nuts usually works well. powered version can be set up race- If you’re planning on attending the Rotate the tail rotor drive shaft wire, ready for under seven pounds. Ed’s
78 MODEL BUILDER 46 TANK SYSTEMS you can depend on
Get more flight-time out of your models with these full tank systems from Sullivan. The secret to full tank capacity lies in the unique bubble design — just fill the tank to capacity and the bubble on top pockets the right amount of air, with the tube fitting neatly inside. Each NEV-R-LEAK tank is built to last, and impervious to all types of fuel. Choose among capacities of 1 oz. to 16 ozs., and a wide range of shapes, sizes and dimensions that fit any kind of model. (46 to choose from). What's more, all tanks over 4 ozs. include Klapper-Klunk and klunk pick-ups. Now you can choose the better fuel tank system for longer, dependable flight-time. See your dealer today or send for complete catalog describing all styles, sizes and dimen CUTAWAY SHOWING INSTALLATION sions. OF KLAPPER-KLUNK
WARNING to all Modelers: Do Not Fly Near Overhead Power Lines
PRODUCTS 1 North Haven Street. Ρ.Ο. Box 5166, Baltimore. MD 21224 · (301) 732-3500
record holding 40 weighs six pounds, 12 Anyone interested in obtaining a copy ermit using the picture of your boat. I ounces. When he stuffs his OPS 65 in the of this speed chart can send me a ave finally gotten around to painting boat, the weight goes to seven pounds, stamped, self-addressed envelope, and the 20 Coyote, but I haven't yet decided four ounces. Fuel tanks are not pro I’ll gladly send him or her a copy. what to do for a cowl. Concerning the vided, but standard Sullivan tanks can be A READER WRITES props for your 20 deep vee, I think the used in tandem. "Dear Mr. Dunlap. X440/3 from Octura is definitely worth a I’ve had the opportunity to watch the “ Thought I would send you a picture try. I might also recommend the Octura development of the canard model de of my boat, a Dumas 'glass Hotshot 27. / X442 and X445. We are running a slightly sign because Ed Fisher lives in my neck have added a few things to the boat for cut X445 on our 20 deep vee, and it’s of the woods. Regardless of what one better performance. The engine is still making the boat perform very well. The might think about the appearance of the stock, except I added a header pipe to “ slightly cut” means that the trailing boat, the achievements of Ed Fisher's allow it to breathe more freely. I ex edge of the prop has been cut away. canard hydroplanes are documented by tended the cowl to improve its looks and HEY JERRY, YOUR SPONSON EDGES records and national championships. aerodynamics. I have also added Aero- DIDN’T WORK ON MY TUNNEL For the model boater willing to pay the marine trim tabs. The boat uses the K&B This was the message I received at a price for excellence in design and Auto Trim. I have experimented with club contest back in February from one construction, this outstanding model is turnfins, and it is my opinion the boat of the local model boaters. It seems that now available. needs one when riding loose on the this modeler did the things I suggested HOW FAST IS THAT? water. in the article, however, his boat wanted Arlid Melang of the Seattle Model “ I enjoyed your article on the Coyote to hook in the corners as a result. He said Yacht Club, ran out an average speed 21. I hope to see more pictures when it’s he tried different motor settings, but he chart for the NAMBA .9 mile oval. In oval all finished. Have you ever thought of couldn’t eliminate the hooking prob racing, we set records in seconds. It is adding an Atlas Van Lines fin on the back lems. Fie eventually gave up, trimmed interesting to see what the various times to complete the cowl? the edges flush with the sponson sides, average out to in miles per hour. As we " I am interested in 20-class deep vees. and put his turnfin back in place. I were discussing Ed Fisher’s40-60Canard, I built a Prather 21 vee after reading your suppose this could be the case with let’s see how his 40 and 60 NAMBA product review in the August 1980 others who may have tried the sponson records equate in miles per hour. In 40 Model Builder. I have raced the boat, edges after reading my article a few Hydroplane, Ed's record is 1:14 which and I have placed fourth in high points months back. I’d be interested in hear comes out to 43.78 mph average. Ed’s 60 in my club running with 40 and 60-size ing from anyone who has tried the idea, Hydroplane record of 1:11 works out to boats. What props have you run besides as I am curious to find out the results a 45.63 mph average. Many of us 20 the C-22? I have tried j.C. F-22, C-22, they obtained. tunnel racers feel we’ve done well when H-25, and Octura 1240 and 1740. What Jerry Dunlap, 119 Crestwood Dr. S.W., we can get close to the two-minute mark about an Octura X440/3? Tacoma, WA 98498. · with our 20 tunnels. A two-minute “ Bob Lafayette, Toledo, Ohio." clocking on the .9 oval would render a 27 Thanks for the photo and information mph average. about your boat, Bob. I hope space will
JUNE 1983 WHEN CONTACTING ADVERTISERS, TELL ’EM MODEL BUILDER SENT YOU! 79 ^ THE BEGIN-AIR TRAINER ALL HANDOUT ANDMACHINED PARTS Wing Span: 54" Wing Area: 540 Sq. In. Weight: 3W lbs. , 1** Engine: H.B .25 No. Channels: 3 or 4 Flat bottom airfoil for easy stable flight. BUZZ WALTZ R/C DESIGNS 255 North El Cielo Suite 476, A irport Park Plaza VISA Palm Springs, CA 92262-6914
DIRECT SALES ONLY
BEGIN/AIR FLOAT KIT $26.95 & $2.50 handling BEGIN/AIR kit & H.B .25 Engine combo $81.95 & $2.50 Handling Available in Canada through WINDMODEL, P.O Box 23142. Vancouver, AMF. B.C. V7B1V6 Write for Addl. Info.
let you know. straight down. Also, if all goes well, we will have some But the pilot must scarcely feel the good info next month on the 1:9 gear ground. box OS VF in a high performance And one last word the head men say, (souped up) configuration in our num "It’s gotta be finished by yesterday.” ber two C.A.P. If you have any solid data on speeds On second thought there’s one thing . . . low or high speeds recorded for more, pattern models, please let us know and "They’ll have to sell at the 10-centstore." we will pass it on to our readers. · Author unknown, submitted by Dave Shipton of Hobby Hideaway. OHIO, HOT-BED OF AVIATION FI an nan...... Continued from page 50 Frank Scott, of Dayton, favored us with a copy of Ohio magazine. While and wrote dozens of letters before most of us are familiar with that state as seeing any useful results. The difficulties being the home base of Wilbur and he encountered in trying to deal with Orville Wright and the legendary Cleve large U.S. companies as compared to the land Air Races, but did you know about ready cooperation received from a these other claims to fame? Ohio has foreign concern is a sad commentary on been the place where the most aviation the state of attitudes in today's American records were set, and is the home of the Pattern...... Continued from page 48 business world. Wright-Patterson Air Force Museum. But Jim persisted, and finally suc The state has 61 companies producing aircraft or parts today, and boasts 84 paint was used anywhere. ceeded in obtaining a quantity of blue Roger’s model used conventional carbon steel blades. In order to obtain airports featuring hard-surfaced run rounded block wingtips and a rear them, he was required to order a very ways. exhaust engine. It flew great! Mine used large quantity, and it seems unlikely that Among the more renowned aviators the scale-like slashed wingtipsand a side more will be available when these are from Ohio have been Captain Eddie exhaust engine. It flew great, until you gone. The price is $18 per hundred (sold Rickenbacker (WW-I air ace and later hit the rudder. The model would then in lots of 50 each only), postpaid. head of Eastern Airlines); Buck Weaver roll and dive. Changing the rudder to a Also available in limited quantity are (stunt flier and builder of WACO air taller shape did not help. the imported Leopard blades by Wilkin craft); Captain Don Gentile (WW-II air ace); General Curtiss LeMay (father of Finally, I glued some foam blocks to son. These are also carbon steel and very the Strategic Air Command); Colonel the wing tips and carved the blocks to a sharp, but not quite as rigid as the blue John H. Glenn (first American to orbit smooth round shape . . . the problem blades. These are priced at $6.63 per 100, the earth); Donn F. Eisele (Apollo astro ceased immediately. I really never plus 88 cents postage, from: Jim Jones naut); and Neil A. Armstrong (first expected the slash tip design to create ABS, 36631 Ledgestone Dr., Mt. Clemens, person to step on the moon)! that much effective dihedral but appar Ml 48043. Hats off to Ohio and to Editor Robert ently it’s true. I’m not condemning the A SIMPLE PROBLEM B. Smith for tabulating this remarkable slash tip, I just didn’t use it with the "Design a plane” ; the head men say, information. proper dihedral. It must be built in such a way While we were test flying one day, a That the dumbest mug can fly hands-off. MODEL CONTEST, 1910 STYLE friendly radar patrolman offered to Make the hardest landings still feel soft. From reading most Old-Timer reports, clock the models. Using a technique to one might conclude that all the eariy-era reduce possible speed error, we deter Make up for brains that the pilot lacks. models were large, ungainly creations, mined the Dalotel could fly as quickly as Make the seats lean forward and still hampered by lack of modern materials 103 mph and as slowly (and reliably) as 24 lean back. and knowledge. But such was certainly mph! We didn't suspect the model’s top It must be fast and not land hot, not always the case, as is clearly apparent speed would be over 100 mph, but we (What a heckuva job the designers got). from a contest report in The Aero, for did suspect the 24 mph low end speed June 14, 1910, from which we have was really closer to 15 mph. The radar Fast and light and comfortable, too. abstracted the following: "A One- gun said otherwise, and these new guns With a cruising range to Timbuctoo, Ounce Model Competition.” “Those are very accurate when properly used. Of course, this is no common hack, who were present at the impromptu SPEEDERS BEWARE! But must carry the load of a ten-ton meeting held by sundry members of the The C.A.P. was not clocked, but it is no Mack. Aero-Models Association on June 5 slouch . . . I guess 75 to 80 mph tops. I’ll It must climb straight up and land certainly received a very great and 80 MODEL BUILDER agreeable surprise at the performance of the models flown.” • 6 CHANNEL RECEIVER* “ Flights of anything under a hundred • 4 MIDGET SERVOS (NES-1A) yards were practically unnoticed, and the maximum flight was between 270 • 500 MAH SQ. BATT (SANYO) N o v a k and 280 yards.” • AILERON EXTENSION ELECTRONICS “ This meeting was originally intended • MINI SWITCH HARNESS to take place in Richmond Park, but, with the intelligence for which our governing bodies are noted in the country, instructions have been issued LU that the flying of model aeroplanes is Z prohibited in all Royal Parks.” (Some things never change! wch) "Conse OČ quently, the competitors had to adjourn to Ham Common, which is just outside O Richmond Park, where, by taking up a 0 0 position in the middle of the common, they were screened by gorse bushes Oč from the main road, they were able to 7 5 .0 0 carry out their interesting tests com < paratively undisturbed, though the gorse on the ground was not good for the models on landing, and set up most eccentric ground currents.” Futaba/compatible plugs. Matches all modern TX. Plug-in crystal included. ^Specify Frequency. Add SZ50 UPS, Calit. residents, add 6% Allow 3-4 weeks lor Listed were the participants and brief checks Send 954 x tV /i SASE lor tree brochure. descriptions of their entries, including: VISA 2709-C Orange Avenue, Santa Ana, CA 92707, (714) 549-3741 Burge Webb (pusher-puller flying wing); W.C. Aston (contra-rotating prop can any flier to practice takeoff and landing ard); T.W.K. Clarke (three Clarke speed technique, train beginners in R/C and fliers); E.V. Twining (twin-prop mono C/L flying, or test new designs with RUBBER STRIP plane); E.J. Poynter (fore and aft prop greater safety to the model and per FAI RUBBER. Made in U.S.A. models); W.O. Manningand P.K. Turner sonnel." SIZES: 1/4",3/16", 1/8", 3/32" (entries damaged during practice). Gordon is also clearing out some of his These names are intriguing, as most of collection of old modelsand accessories, 1/16", by 1mm thick!. 042"). these individuals went on to gain fame in and a stamped pre-addressed envelope BOXED 16 ounces o f rubber per box. model and/or full-scale aviation. will bring you information on them as PRICE: $12.50 per box, ppd in U.S.A. The article concludes with this sum well as his novel model control system. PIR ELLI 3mm o n ly : $18.00ppd mary: “ Those who spend much money WHAT TEST FLIGHTS! on producing large and expensive John Blagg, of England, opines that KSB TIMERS ;ksb~ models would have been rather sorry for arriving at any scale contest for small FUEL SHUTOFF ai-tfi,. I themselves, we should imagine, if they free flight models with untrimmed 30 SEC. $11.95 had been able to see thesplendid flights models is just part of the program: 6 MIN. DT made by these tiny machines on this "After all, you have two chances, A) in $11.95 occasion. None of them were freak stant success, applause, and amazement SEND 5M FOR 1982/83 CATALOG machines in any way, but were simply from the onlookers; or B) nail-biting F. A .I . M o d e l S u p p ly the outcome of a combination of good agonies, the shakes, and any amount of design frames, motors, and propellers, free advice from the onlookers you wish R O BOX 3957 TORRANCE. CA 90510 all reduced to the minimum weight and weren't there in the first place! At this raised to the highest efficiency.” point it is probably wiser to return your forebody three times on a piece of 1/8th Well, here we are folks, some 70 plus new, untested model to the boot of your sheet balsa. Take your A-23 CO2 engine years later, and still at it! car!" and proceed to bend the tubes into the PEANUT TROPHIES HOW’S THAT AGAIN? shape shown. Get a smooth dowel or piece of tubing to bend theloopsaround Ray Harland was kind enough to send Abstracted from a translation of in us a photo of some custom cast trophies structions for flying a French autogyro so that you do not get any kinks in the made by David Phillips, 88 Winslow model, sent to the Hangar by Georges lines. Make sure the motor, the tank, Ave., Somerville, MA 02144. Made by Chaulet: "A ll this can appear well and the filler will fit in the appropriate employing real peanuts to create molds complicated, but I reassure you here positions. via the lost wax process, the metal that it is. It is more easy, or less difficult in Now, select one of the forebody castings are mounted on turned brass making flights with this type of model." sheets and groove it to allow the tube to bases. David is considering production Ah w e ll... go aft to the engine. Also, cut out a spot for the bottom of the tank, and cut it of more of these classy items, in the SIGN OFF TIME apart to fit the filler. Next, place the event any clubs may be interested. Ed Lockhart and Richard Miller teamed up with these parting thoughts motor in position, and fit the two other RADIO CONTROLINE for model builders: “ As soon as you forebody pieces in position. They will Gordon Codding, 3724 John L. Ave., carefully put a tool away after using it on also have to be slightly modified to Kingman, AZ 86401 has been experi a project, it will be needed again, almost accept the engine components. When menting with a model control system instantly” ; and: “ Model paint causes all three pieces fit together as they which combines features of both R/C seams to crack.” · should, cement the three layers of 1/8th and C/L. The model is tethered in balsa together. Make sure the tank and "G-line” fashion to a central post via a the fillers are securely in place. The suitable swivel, and flies around in a Peanut...... Continued from page 51 motor itself is secured to the forebody circular path. The operator, however, by three bank pins. These are just stands outside this flight circle and area, so the model flies quite well. relatively thick straight pins. The top operates the elevator (and throttle, if So let’s build the Wing Ding! First, find center pin is stuck into the center balsa desired) via a standard R/C transmitter. a soda straw that has the right diameter. lamination. The other two pins are just As Codding puts it: “ The system allows Now, lay out the pattern of the fuselage about flush with the outside of the
JUNE 1983 WHEN CONTACTING ADVERTISERS. TELL ’EM MODEL BUILDER SENT YOU! 81 dacron sailcloth, so plain, white tissue Λ will be OK. White glue, thinned with IRVINE ENGINES water (about 50/50) works well as a of covering cement. Cement the tissue to ENGLAND the leading edge, the root rib, and the wing tip only. When the glue is dry, trim • Schnuerle Ported the tissue. Then, using as little glue as • Dykes Ringed Piston possible, glue the tissue to the thread • Multi-Speed Carburetor trailing edge. When this is dry, the tissue • 8 Airplane,3 Marine,& 1 helicopter/ can be water shrunk and then given a Car Version coat of thin, clear dope. • Parts Available Before assembling the completed AVAILABLE AT YOUR FAVORfTE DEALER wings to the model, cut a small, circular MIDWEST MODEL hole in the tissue of the bottom wings to accept the struts at the proper location. 25R/C W/SILENCER SUPPLY CO. The wing spars should be inserted in the ______$75.95______/ BOX 5111) ROUCOVILLE. ILL (0U 1 J13-7W-19K forebody holes. Start with the bottom “Serving dealer* over 40 year*” wings, and block them up into the \ y w 1 1 1 1 3 ______proper dihedral angle as shown in the forebody; they need a slight notch, and the horizontal tail, the braces are pivot front view. Cement them in place, and must be cemented in place. ing, and no doublers show. let the spar joints dry. Then, install the Drill the 1/16th diameter through- The top and bottom wings are identi top wings. Use the struts to position the holes for the wing spars. Note that they cal. They have a forward and an aft spar top wings for the correct dihedral. must allow for wing dihedral, so they separated by three compression mem Cement the spar joints and the struts in must be drilled halway through from bers and two diagonal members per place. When this assembly is completely each side at the correct dihedral angle. If wing to rigidize the spar positions. At dry, you can add the brace wires. Two- they aren't perfect, they can be enlarged each of the joints there is a segment of a pound test monofilament fishing leader and filled on final assembly. circular, bond paper gusset. Bond paper was used on the model. It can be tight Make a hole in the back of the fore makes perfectly adequate gussets for the ened over a source of heat if the wires body to accept the tailboom. If you have model. Build the spar assemblies direct end up a little slack. Too much heat can a piece of brass tubing the same diameter ly over the plan. It is probably best to make them disappear so care is advised. as the straw, you can simply sharpen the make the upper (or lower) set complete There is an X-shaped, crossover pattern end of the brass tube and push it a short ly before doing the second set of spar of wires in the same plane as the upper way into the forebody. When it is assemblies so that the wing can be and lower forward spars on both sides, removed, the straw can be pushed into completely assembled before the spar and also in the plane of the upper and place. Cut a short piece of aluminum assembly is removed from the work lower rear spars. tubing for the horizontal tail pivot. Now board. Now, cement the 3/32nd square Now, carve the pilot for the Wing squeeze the aft end of the tail boom so balsa leading edge member to the front Ding model. The one in the photos was that it can be bonded to the aluminum of the forward spar. Don't attempt to carved from fine-grained, light blue tube. The boom will have to be slightly shape the leading edge now, leave it styrofoam. His legs go on both sides of notched so there will be a small, over square until later. Make a pattern the the tank, and he needs to be split hanging flap on top and bottom which shape of the wing ribs, andslice them off almost all the way up through his chest will serve as the giving surface. one after another out of a piece of and neck to fit around the CO2 tubing. Bend the main gear wire from 1/32nd 1/32nd sheet balsa. Separate the aft spar The pilot may have feet of clay (ha ha) if diameter music wire to the shape shown from the work board and prop it up more nose weight is required. Clothe in the front view, and cement it in place. slightly while leaving the forward spar the pilot is suitable colors of plastic The tail wheel wire should be as thin as and leading edge members pinned model paint. possible, and is poked up through the down. The correct shim for the rear spar Before flying the model, make sure tailboom at the appropriate place. It can is about an eighth of an inch thick. the center of gravity is at least as far extend up into the vertical tail a short Cement all the rib pieces in place. forward as shown. Check to see that the distance. Laminate the wing tip pieces (one on surfaces do not have any unwanted Cut the tail pieces out of 1/16th sheet top of the other) from two pieces of warps. Now, glide it over something soft. balsa. The balsa grain should be parallel 1/32nd by 1/16th balsa to tne shape Adjust the tail so the model glides in a to the longest dimension of the parts. shown, and cement them in place. straight line, and with a smooth descent. Sand them to the airfoil section shown. Note that there is no trailing edge piece It should neither dive now swoop up The horizontal tail is mounted on the tail on the wings, and at this point in the into a stall. Adjust the A-23 so that it runs boom by means of a length of wire construction sequence the ribs are quite slowly, and try a hand-launched which is run through the pivottube,and somewhat delicate. Carefully add a line flight. If the motor power is low enough, them cemented to the horizontal stab. of sewing thread along the aft ends of it should only extend the glide. Quite The tail will be free to pivot, and can be the ribs to simulate a wire trailing edge possibly, the model will turn under held in one position by two little pieces on the wing. power. Adjust the rudder to counteract of masking tape over the tail and the aft When both sets of wings are com the turn, and try a low power flight again end of the boom. Once the tail has been plete, sand the leading edges to the until the model flys fairly straight. adjusted for flight, a little cement can be contour shown in the side view. Now fit Gradually increase the power until the run into the pivot tube to fix the pivot the wings to the body of the Wing Ding model climbs with the motor running. If wire rigidly, and the tape can be by inserting the root end of the spars increases in power result in shallow removed. into the proper holes in the forebody. It dives, pull the top pin out slightly, and The vertical tail is cemented to the top may be necessary to adjust the holes, shim tne motor so that the thrust line of the boom. The full-size airplane has primarily by enlarging one or the other points higher to the front. As long as the several structural doublers surrounding slightly, to get the spars completely model glides OK power off, do not the tail boom which hold the vertical tail inserted. The struts are made from the change the horizontal tail setting to in place. These are simulated on the same material as the spars. Cut the struts adjust the powered portion of the flight. model by a couple of layers of masking to length and make a trial fit of the Use a thrustline adjustment instead. tape. Near the top of the vertical tail wings. Do not glue them in place yet. If the rudder adjustment (which is there are some oval doublers where the Now cover the wings. The wings required to keep the powered portion tail brace is attached, these are also appear to be unpainted on the full-size of the flight reasonable . .. that is, the simulated with masking tape layers. At Wing Ding and are probably white model has wide enough turns under
82 MODEL BUILDER power so that it does not spiral dive) makes the model turn too tightly in the glide, reduce the rudder offset a little, and put in a little side thrust by adding a Tubing Tools shim at one of the side engine mounting lugs. Cutter handles round brass, copper or alumi Have a great time flying the Peanut num tubing in sizes up Wing Ding! · to 5/8 O.D. A specially designed nylon body re duces grip friction to Free Flight. . . .Continued from page 57 make cutting easier. Cuts without crimping, screw on the arm. This is the glide too. Tubing benders position . . . which can be adjusted handles tubes up to simply by turning the adjustment screw. 3/1 6 O.D. V-block clamp When the model is ready to dether- holds securely for cut ting, drilling, filing, etc. malize, the D.T. timer releases tension Send 25 cents for our on the arm, and it pivots backwards, price list and tubing, allowing the stab to assume a normal shapes, wire and tool detherm alizing angle. The line that catalog. K & S Engineer fastens directly to the stab to hold it in ing, 6917 W. 59th St., place during the power phase (the V.l.T. Chicago, Illinois 60638. line) must have enough slack in it to Telephone: 312/586- allow the stab to pop up to the proper 8503. dethermalizing angle. This setup is probably the simplest, having a minimum of gadgetry. The FULL LINE METAL SPECIALISTS pictures show variations on this theme. SHE The sketch (Figure 1) shows that the arm is loaded against the tension of a spring wire. The arms are made from 1/8 in. to located below the pivot point. Photo 3/16 in. aluminum sheet, and are drilled "ANOTHER GREAT WINDER" No. 4 shows how this system is con and tapped to accept the pivot, the line, structed, although it shows a double arm the springs, and the adjustment screw. IMPROVED system. The 1/8 sheet will necessitate using a 2- SMOOTHER Another variation on this theme can 56 screw, the 3/16 sheet allows the use be seen in Figure 2. In this case, the of the 4-40 size. I use the larger sizes in Lift - $64.95 spring is coiled over the line that goes to my models. Plus shipp ing the timer and is in compression until the The lines from the timer should be line releases. The spring then pushes the stranded control line cable in all cases except when a single arm system is used. arm out of the way of the stab, allowing JOHN MORRILLS"SIDEWINDER" the stab to move to the dethermalizing In this latter case, standard dacron position. Photo No. 5 shows this system fishing line (I use 40 lb. test), or heavy Precision Built Heavy Duty Winder! well. monofilament should be used on the Turn Counter kit - $18.00 Please refer to Figure 3 and Photos 5,6, line that is fastened directly to the stab. $1.00 FOR CATALOG and 7. In the case of the double arm V.l.T. DOUBLE ARM V.l.T system, a spring can be used in the lines JIM CROCKET REPLICAS This system uses two arms. One holds to keep the appropriate tension on the P.O. BOX 12600 the stab in place for the power phase of arms, or the lines can be made the exact FRESNO. CA 93778 the flight and then moves out of the way length to eliminate the necessity of for the glide, as shown in the sketch and springs. I prefer to use springs in the tuned for Part II next month. Photo No. 5. Photo No. 6 shows the same lines as I have never achieved such an NFFS PUBLICATIONS DEAL arrangement but with the Olofsson exact fit. In no case do I advise using I got a letter from Fred Terzian, pro spring system. Photo No. 7 shows both rubber bands . .. unless you are using a prietor of NFFS Publications. He an arms in place. For dethermalizing action, fuse D.T. system (more about this next nounces that all “ NFFS Symposiums” both arms swing back, and the stab pops month). and "Technical Reports” are now on up to a normal dethermalizing angle. To make part of the task easier, Jim sale until August 1,1983; three issues for SOME PERSONAL PREFERENCES Crocket Replicas, P.O. Box 12600, Fresno, $20 and six issues for $35. Surface post I prefer the double arm trapped CA 93778, markets a very slick V.l.T. age is included. Non-members are spring system better than any other type. system for $13.50 that was designed by requested to provide an additional The reasons are that very little tension is Doug Galbreath and others. As usual, $4.00. Also, back issues of "NFFS Digest” placed upon the timer as is the case with this is a high quality casting, and takes are available as a set for $18.00 (mem a single arm system, and the adjust quite a bit of the sawing and filing out of bership not required). Send to NFFS ments to a double arm system are much making your own system. (See Figure 4). Publications, c/o Fred Terzian, 4858 easier to make. The trapped spring Jim’s casting uses a clothespin spring Moorpark Ave., San Jose, CA 95129. allows me to use easily obtainable type arrangement to move the arms out These publications contain priceless springs .. . such as ball point pen springs of the way, but in all other respects, it is information about the current state of or the spring from a Bic butane lighter. similar to the types described earlier. the free flight art (and science). Here’s In addition, all of the components can I have included some pictures taken at your one chance to catch up. Mail your be visually checked to see that every the Taft World F.F. Champs to show check to Fred. thing is in place before the flight. other variations on the V.l.T. theme. SOME DAFFYNITIONS FROM COMPONENTS Next month, I will conclude this V.l.T. THE CIA INFORMER In all cases, the components can be show with some suggestions for starting TURBULENCE: What happens to an made easily. The Olofsson style requires points in trimming your V.l.T. model, a airplane in flight at the very instant that some superstructure that hangs outside description of the now experimental the stewardess begins to pour your the model, and the arms are a bit longer. “ bunt” system, and a couple of ways you coffee... The pivot can be made from a piece of can set your timer u p . . . or make a timer EXPERTISE: Varies directly with the brass tubing, a 4/40 bolt, or some music . . . to accommodate a V.l.T. system. Stay previous number of models you have
JUNE 1983 WHEN CONTACTING ADVERTISERS. TELL ’EM MODEL BUILDER SENT YOU! 83 you, or some of your seasoned friends Can you really afford to use less recommend for beefing up this area than the best battery packs made? without adding tons of weight? “ And how about reinforcing the wing Sf£ spars to get a good, strong wing? Carbon fiber looks good, but how is it best used?
SR aerospace grade battery packs How much, where? I hope you can give you answer. Thanks.” • 3 Times the flying time Fuselages often break just ahead of • The ulimate in reliability the horizontal stabilizer. Rough land • 80 Packs to choose from for ings are usually the cause. In a sideways, transmitters, receivers, and cartwheeling, or ground-loop landing, electric powered cars and planes the tail surfaces invariably hit the ground • Send a self-addressed, stamped business size envelope for full . .. hard. Because these surfaces stick details out from the fuselage, they have the ability, through leverage, to magnify the power of the blow to the fuselage. This B A T T E R C S iISjC BOX 207 Β Ε ίΐΡ Ο βΤ NEW YORK 11713 stress often causes the frail structure of the balsa fuselage to split and break at its won't earn you any points however, weakest and thinnest spot, which just unless you get out there and mix it up happens to be the area closest to the occasionally! And you won’t get many source of the stress. kills unless your victims are at your Ideally, we want to increase the altitude or below. strength of the fuselage in direct pro $15.98 HALF A SPACER If an attacker is hot on your tail, there portion to the stress encountered at any are several moves that you can put on point along the fuselage without adding N O S T A L G I A him to shake him off. any more material than necessary. The G A S M O D E L If your opponent’s skill level is inferior best way to accomplish this is by lami ■ ^ FROM THE 50s to yours, don’t worry, just about any nating the building material in extra — m ___ 5 thing you do will shake him off: try a layers where the stress concentration split-S, or a quick series of right and left requires it. MANUFACTURERS OF f T ^ \ RUBBER.GLIDER.AND turns. Most kit airplanes, as I see it, are GAS FREE FLIGHT KITS If your attacker’s skills are on par with designed with sufficient strength if they % (/) J DISTRIBUTOR AND yours, you may have a problem. If you are flown within the range of abuse V o , i v y DEALER INQUIRIES think you have a superior machine, try dished out by the typical intermediate to x ^ T o w J x INVITED. to out maneuver or out climb him to expert flier . . . which is to say the PO. BOX 5998 gain that height advantage, but if slow L A K E W O R T H beginner to intermediate flier could use F L . 3 3 4 6 1 ing down to gain altitude allows your foe to get too close, forget it. If you don’t a beefed-up or reinforced airplane in most cases. Unfortunately, it’s the be "dorked." have a superior ship, try a high speed pass followed by a loop which is big ginner who is not going to know this, That should more than do it for June. and it's the beginner who is most likely If you haven’t done it yet, dust off the enough to place you behind him. If that fails, hide in the pack, go where there going to build poorly in the first place. models . .. the good weather is here, get Kit manufacturers are in business to out and fly . . . and thermals to all. · are other targets for him to kill, and get a few in for yourself. Your options are make money. In order to do this they unlimited! Above all, have fun! have to keep the cost of their kits down to a level that is competitive with others. Soaring...... Continued from page 26 OTHER GUIDELINES TO FOLLOW Kits that have a lot of materials or labor The time limit for one round is usually going into them tend to be more expen list of wares, it is an instruction guide for five or six minutes. During that time a sive, which is one reason why you see so foam wing construction and all kinds of pilot can relaunch as many times as he many boxy-looking fuselages and open other stuff . . . get it now, you won’t needs to. Intentional landing and re structured wings. Similarly, expense is regret it later. launching is forbidden. Repairs to dam one of the reasons why they are only Of course, there’s nothing that says aged ships are allowed within the work marginally strong. Spruce and plywood you need a special slope machine to fly ing time of the round. The minimum are expensive. Exotic materials like combat. Anything that flies and is ex number of planes in a round should be carbon fiber or Kevlar are out of the pendable will do. It is nice, however, to three, unless there is no other choice question. know that the plane is inexpensively and but to have only two in a round. Ob Which leaves us with the task at hand easily rebuilt after a serious crash or viously, the more planes up the better. . .. fixing that broken tail boom. Now mid-air, and this is where the Cheetah Each pilot needs a spotter who is in that you have discovered a weakness in really comes into its own. charge of keeping track of his points. the fuselage, you have the opportunity TACTICS FOR COMBAT Scoring is best done on a man-on-man to not only repair it, but make it stronger. The biggest single tactical advantage a basis. Three rounds with a fly-off for tie By far the easiest way to do this is to use slope combat pilot can have is altitude. scores is about right timewise, any more fiberglass. Yes, that's going to add As long as you are higher than your and you can't trust the weather, any less weight, but any other method will too, opponent, he will have a very hard time and the contest is over too quickly. and it won't look as nice when you’re attacking you. You, however, have the That’s about i t . . . keep it as simple as done. advantage of a higher level of stored you possibly can, but above all, TRY IT! Begin the repair by stripping away the energy (potential energy), and thus the Q & A FORUM: FUSELAGE AND covering from the area of the break. advantage of greater speed and maneu WING BEEF-UP Save all of the little broken pieces as you verability. I recently received a short letter from will need them to fill in all those holes in Another good tactic is to hug the Ed Depue, of Long Beach, California, in the jigsaw puzzle that is now your slope until your victim is within striking which he states: “ Your idea of a Q & A fuselage. (Don’t be discouraged, it’s distance, and then go out and get him. section sounds great. Here's a question never as bad as it first seems.) If you have Chances are he won’t try to flush you out for you. I’ve built a few gliders, and all of wooden pushrods inside the fuselage, from the hill, or play cat and mouse with ’em have broken just in front of the stab check to see that they have not been you, for fear of crashing into the hill. This sooner or later, mostly sooner. What can damaged in the crash (or whatever it was 84 MODEL BUILDER that broke it). If they are only cracked, a drop of Hot Stuff will make them almost as good as new, and in some cases even better. If the pushrods are broken in two, it’s best to simply replace them. The next part isthe one that can be the most dreaded for the inexperienced SWINGEE model builder: reassembling thebroken pieces into a fuselage again. If you have A New Goncepf For Model Builders access to an extra pair of hands, this can be a real help to you, if not, don’t sweat it. Have your helper (or friendly bean bag assortment with shims) hold the fuselage in the exact position required to get things lined up again, then take that bottle of Hot Stuff or similar cyano acrylate adhesive and glue any joints that are perfect just as they are. Some In-line control device has built-in for sample, technical information joints will require a little poking here bellcrank, controlhorn and hinge. and price list. Include $3.50 for and tugging there to get them back into Made of Delrin — the space age postage and handling. shape before you can glue them too. material that is impervious to tempera Wholesalers/dealers welcome! ture changes and age brittling. Carefully replace any chunks or pieces The testing period is over ... the For more information see your local SWINGEE is now available for youl of balsa that may have fallen out or been hobby shop or write direct to ScanAm pulled out since the crash. The fuselage probably won’t look too pretty at this point, but take heart, it’ll look better in scan am the end. M m iNTIfiNAItOiAt tRADtNG INCOfiPORAIlO Now that the basic fuselage has been 1000 Quail, Suite 290, Newport Beach, CA 92660 * 714/833*9098 put back together, it needs to be sanded to eliminate high spots, and filled in with material is still Monokote. It’s strong, Pactra Plastic Balsa then sanded smooth light, and looks just like a professional to eliminate low spots. I would use a paint job when applied correctly. fairly coarse sandpaper, such as 150 grit, Now ... if you are about to build a "f l e x - o f f " to save time. You are now ready to ’glass model that you suspect is going to be too FLEXIBLE METAL EXHAUST TUBING the fractured area. weak for your kind of flying, then your
I have found that the best way to course of action is much simpler. (Refer • LIGHT WEIGHT GALVANIΖΕ0 STEEL repair small areas of model airplanes to the sketches.) Here you can see two ■ EASILY SENT, WILL HOLD IT"S SKATE ■ FUEL PROOF-NOT EFFECTE0 BY HOT using fiberglass is to use Super T Hot methods (there are many variations) of EXHAUST 0« MOT FUELS Stuff instead of epoxy. This method is beefing up the inside of a fuselage ■ W0AH DRIVE CLAMP INCLUDED ■WEIGHS ONLY SLIGHTLY HORE THAN practically as strong, and much lighter. where it doesn’t show. The first way is to RUBBER OR PLASTIC TUBING W What you have todo though,because of cut a pair of doublers out of 1/64th ply. the speed at which the Super Ύ cures, is Design them to extend at least two -SIZES TO FIT HOST MUFFLERS- work in small areas. inches beyond the leading edges of the Ho. IO6F0 1/2·· d t · . * 12" 5.75 Begin by cutting a patch of two-ounce tail surfaces, and have them either taper No. I07F0 5/8" d lx .x 12" 6.00 No. I08F0 3 / V d la .x 12" 6.25 (2 oz./sq. yd.) fiberglass cloth big enough off in an angle or in a rounded fork as Ho. ID9F0 7/8" d la .x 12" 6.50 to cover the broken area and extend a shown in the sketch. The second way, little beyond it in all directions (remem and the simpler of the two, is to eat two TATONE PRODUCTS CORP. 1209 Geneva Awe. San F rancisco. C a.94112 ber, you want this area to be stronger popsicles (yummie), and use the four 415-334-7189 than before). Turn the fuselage on its sticks as the doublers in place of the back and center the cloth over it. Tack plywood. This way is probably not as increase the width of the spar cap. You glue the cloth in place on the bottom strong as the first, but it is lighter and it might also add more shear webbing surface using the thick CA adhesive. does the job. This is the method that Ed and/or more wing joiner material de When this has kicked off, generously Slobod (Pierce Aero Co.) recommends pending on what’s in the kit. In the case apply the adhesive to the cloth and rub to beef up the tail of the Paragon. of a Pierce Aero Gemini M.T.S., the in briefly with a fingertip protected by a A third method, in the case of a "cross your heart” wing joiner is plenty sheet of waxed paper. Stop rubbing fuselage with internal longerons, is to strong enough, but for the model with a before the glue cures and leave it alone simply add longerons in the area of die cut 1/16th ply joiner, you’d better till it does. Continue applying thick CA desired extra strength. This is light, make a second one. glue until the bottom of the fuse is done. simple and effective. Carbon fiber and epoxy spars are not Rotate the fuse to its side and repeat the I would not recommend using carbon really necessary unless you plan toreally process. Do the other fuselage side next. fiber and epoxy to beef up the fuselage if be tough on a wing. But, in case this When you get to the top, you may have the receiver antenna is to run down the turns you on, the best way to do it is to to trim the cloth to get it to go around inside where it can be blanked-off or follow the idea outlined in my Novem horizontal and vertical stabilizers. You shielded from the transmitter’s signal. ber 1982 "R/C Soaring” column. In that will have to trim it so that it will overlap Wings are also very simple to beef up. article, I detailed one method of mold only a small amount across the top as it If a wing is going to fail under flight or ing C/F-spruce spar caps in extruded will have to be sanded smooth later. launch loads, it will invariably fail near aluminum sliding window channel. Take some 320 grit sandpaper and the root (provided it was built right to Another way to go is to write to Twinn-K smooth out any rough spots on the begin with). If the wing is one piece, or it (P.O. Box 31228, Indianapolis, IN 46231), fiberglass cloth. Carefully feather out has a one piece center section, the job is and ask to see their catalog of carbon any rough edges so that there will not be a little easier than that of a plug-in two fiber reinforcement materials which are any lumps in the covering to give your piece wing. In the sketch, I have shown preimpregnated and cured with epoxy, repair job away. That's it! All there is left the basic method: glue on extra spar ready to epoxy to anything, be it spar to do is cover or, in the case of a paint material. If the spar in the kit is 1/8 x 1/4 caps, fuselage sides, etc. Another source finished model: fill, sand, prime, and or 3/8 spruce, then add another 1/8 of precured C/F is Aerolite (1325 Miller- paint. My personal favorite covering square cap piece (top and bottom) to sport Hwy., Buffalo, NY 14221), again,
JUNE 1983 WHEN CONTACTING ADVERTISERS, TELL ’EM MODEL BUILDER SENT YOU! 85 sity of Illinois ...” At this point, Michael explains how to “W haťs New at Wilshire ?" figure out where the air flow turbulates ------2200 mm------1- and separates at any given angle of attack (a) of lift coefficient (Cl) using the BL D-7954 graphs for both the MB-253515 and the E-205. He begins with a definition of terms: us is upper surface; Is is lower surface; turb is turbulent transition point; sep is separation point; 5 is length ϋ of arc as measured from the trailing 4- -1110mm- edge (this measurement is always given Molded foam wings with spar as a decimal fraction of one chord o b ř i inserted — just cover with sup length). Cry C a r r e r a / plied silkspan and brush on He takes the example of a equals four thinned white glue — a strong, degrees and gives the us and the Is $ 9 9 95 ASW19 tough surface! position of Swrb (0.5870 for us, 0.2398 for Another of the famous almost- •Specs: 2 cha n ne l · 86.6" span Is), Ssep (0.0859 for us, 0.0000 for Is), and ready-to-fly sailplanes from • 35 oz. · W ing Area 544.5 sq. In. Co (coefficient of drag 0.0107 for us, Germany. Semi scale, beauti • Wing Loading 10 oz./tt. 0.0035 for Is, 0.0142 total Co). He also ful T-tail, super flyer! German/Engllsh instructions gives the C l (0.588) and C m (pitching Send $2.00 for Wilshire "Hi Tech" model info pak! j moment coefficient at 1/4 chord, -0.0454). All of the foregoing informa wilshire model center tion was obtained from a numerical 3006 Wilshire Blvd · Santa Monica. CA · rintout, not a graph, but it could have 90403 · Phone (213) 828-9362 een taken from the graph with a little RC Sailplane and Electric Power specialists tor the U S A less accuracy (one decimal point less). “ . . . The points are clearly seen on the graphs at Cl of 0.6 (which corresponds to ( BROWN CO-2 ENGINES Ϊ Λ it. I may not know all the answers, but I a of four degrees, wrf). Draw a line along LOWER PRICES and NEW ENGINES g can get a hold of those who may (within C l = 0.6, it will intersect the boundary N E W C AM PUS BEE - $24 95 a reason!). A 23 PEANUT $34 95 MJ-TWIN $49.95 J ^ layer curves at the points drawn above. SODA CHARGER $β.95 CYRO DYNE CHARGER $7.95 U- MB-253515 vs E-205 AIRFOIL "Now look at Cl = 0.16; the transition C0MPLÍTÍ CATALOG $1.00 DEBATE CONTINUES point for both profiles is the same. As I recently received a very interesting O ) Peck-Polymers C l become smaller, the transition point BOX 2498-MB______LA MESA. CA 92041 J package in the mail from Michael Selig, on the lower surface of the E-205 moves a student at the University of Illinois. In forward much faster than the MB. This write for prices and details. The idea the package were a number of computer results in the E-205 having more drag on here is to use the spruce cap as a stiffener printouts including L/D, pitching mo the lower surface relative to the MB at for the C/F lamination(s) because C/F ment, coefficient of lift vs. angle of negative angles of attack. From the drag loses most of its strength if it is twisted or attack, velocity distribution, and upper polar, the MB has less drag than the warped in any way while under load. D- and lower surface turbulent flow and E-205 at Cl less than or equal to 0.1. So, in tube construction is a must if you are separation graphs for both the Eppler the speed run the MB has less drag (at planning to use C/F. Anything less is 205 and M ike Bame 253515 airfoils. these Cl, but in duration the MB pays asking for trouble. Along with the prints outs, Michael the price of more drag for a given Cl As for the correct amount of C/F to wrote a brief synopsis which sum Possibly, the drag of the MB could be use ... well, that’s a little like saying, marized his findings. I showed this data improved by adding a turbulator of "When are we going to get there. to Mike Bame and a few others in the some type ahead of the transition point Daddy?" .. . it depends. It depends on San Fernando Valley Silent Flyers club for a given Cl This could delay this how much of a load you are planning to where the MB airfoils have been tested separation, thus decreasing the drag. put on the wing, how thick the section of in various designs and L/D trials (at How about a retractable turbulator? the wing is (for spar depth), and prob 5:00 a.m.) over the past three years or so. "Well, the work is still going on here, ably a few other factors. I have never Their comments ran along the lines of, I’m going to run the Eppler with the MB really heard of any precise method of "We told you so.” and, "This only proves and E-205 at a Reynolds Number of calculating ‘‘How much is enough?” But what we’ve been saying all along.” 260,000, add a turbulator to the MB, and I would say that in the case of a beef-up, I thought it would be interesting to run some other airfoils for comparison. no more than one 10 to 12 thousandths- reproduce Mr. Selig’s findings this “ . .. I’ll tell you, to run the MB*and inch layer is ever warranted. Carbon is month in place of a new “ Airfoil of the E-205 through the Eppler was a real strong stuff. In the case of a purely C/F Month” as is the usual practice in this chore. First I had to scale up the airfoil spar, things such as wing span, wing column. As you may recall, Alex Bower using the 20 or so top and bottom points area, spar depth, planned wing loading, flew the MB-253515 airfoil to the fastest that I have (probably from points pub and maximum G-loading must be known time ever in U.S. F3B speed at Joliet last lished in the S.O.A.R. newsletter, wrf) before the calculations can be made to summer. He is planning to fly the MB Then I have to draw a smooth curve determine the answer. . . even then I’d section again at the World Champion through them and get 20 top and bottom probably add a few thousandths just as a ships in York, England this summer as a more. So, now I have 40 top and bottom safety factor to account for defects and member of the U.S. team. Anyway, on points . . . accurate? Not at all. At least imperfections. If you are interested in with what Michael Selig has to say: not good enough for Eppler. I tried it this type of info, it can be provided here “ Dear Bill, with those raw, inaccurate points and in "R/C Soaring” if anyone is interested. "E-205 vs. MB-253515 Debate Over! Write to me and let me know. "I doubt that really, but now it is my the velocity distribution looked like the Write to R/C Soaring, Q & A Forum, turn to get my two-cents-worth in. Rockies. This screws up the boundary P.O. Box 10335, Costa Mesa, CA 92627. "Enclosed, you will find some goodies, layer curves. So, what I did with the 40 Any questions related to soaring are that is, graphs. These graphs were top and bottom raw points was run them welcome .. . please, no personal prob generated by the Eppler and Somers through a NASA smoothing program, lems, or matters of finance! Seriously, I’d computer program for the design and and boy are they smooth (to the sixth like to help the soaring community if analysis of airfoils at low Reynolds decimal point)! From here they went possible, and this is one way for me to do Numbers which I ran here at the Univer into the Eppler, and Eppler smoothed
86 MODEL BUILDER Peter W est burg's SCALE VIEWS
SUPER-ACCURATE AIRCRAFT DRAWINGS. USE FOR SCALE DOCUMENTATION AND/OR FOR DEVELOPING MODEL CONSTRUCTION PLANS. ALL DRAWINGS ARE 28 X 40 INCHES BORDER- TO-BORDER, AND ARE SCALED AS LISTED BELOW.
1 /24th scale: W = 1 ft. Shts $ Czech Avia B-534 2 8 Waco ATO Taperwing 2 8 Douglas 0-35/B-7 1 4 Davis D-1K 2 8 Douglas XO-36-XB-7 1 4 Douglas 0-25C 3 12 1/10 scale: 1.2" = 1 ft. S hts $ Douglas 0-31A/0-31B 3 12 Berliner/Joyce P-16 4 16 1/12th scale: 1" = 1 ft. Douglas 0-38/0-38B 2 8 Curtiss BFC-2 Goshawk 4 16 Boeing F4B-4/-3 4 16 Douglas 0-43A 3 12 Curtiss F9C-2 Sparrowhawk 4 16 Boeing P-12E 3 12 Douglas 0-31C/Y10-43 3 12 Curtiss P-6E Hawk 4 16 Curtiss A-8 Shrike 3 12 Douglas 0-46A 3 12 Fiat CR-32 3 12 Curtiss Gulfhawk IA 2 8 Fokker D-17 3 12 Great Lakes Trainer 4 16 Curtiss N2C-2 Fledgling 4 16 General Western Meteor 1 4 Hawker Fury Mk I 4 16 Curtiss 0-1B/A-3 Falcon 3 12 Grumman F2F-1 3 12 Hawker High Speed Fury 3 12 Curtiss P-1B Hawk 3 12 Grumman F3F-2 3 12 Hawker Persian Fury 3 12 Curtiss XP/YP-23 3 12 Stearman 4E Mailplane 2 8 Monocoupe 90A 2 8 Curtiss SBC-4 Helldiver 4 16 Travel Air 2000 2 8 Swedish Sparmann P-1 2 8
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JUNE 1983 WHEN CONTACTING ADVERTISERS, TELL ‘EM MODEL BUILDER SENT YOU! 87 STRUCKS 1940 Charles had one at the contest. It is a W “SERIES 5 0 ” Old Timer R/C S! “ smart” charger, just plug it in, and it NEW RULER does the rest. The photo shows Mike’s AIR TRAILS IBA PB26 F3E motorglider on charge. It Partial Kit has 24 cells, so the charger must have a SPORTSTER ® e $39.95 $33.00 voltage doubler or tripler in it as well! It senses when the batteries have peaked, 1938 .3 6 ( .«401 G lo w "D" Ignition and turns itself off. The charger is about In addition to the Just Released New Ruler, the $200, and is available from H&H Lippert, POWERHOUSE following partial kits are also available. 9 $39,95 The 1936 FLYING QUAKER (Megow’s) 89·* $21.50 Postfach 1245, D-5067, Kurten, West 5σ7 SPAN 380 SQ. IN. 32-38 OZ.' The 1937 QUAKER FLASH (Megow's) 67"span $17.50 Germany. The 1937 "LONG" CABIN. 78" span S20.00 3 CHANNEL, .09 TO 15 POWER The 1937 AIR CHIEF (Ideal's). 61" span $20.00 The F3E events were flown concur "SERIES 50" Kits are Full Kits wltn Machine Cut 6 Partial kits are Rib, Tip, and Former kits, i ney rently with the non-R/C events. Sanded Parts. Formed Landing Gear, Partial R/C feature Machine Cut and Sanded Parts. Full Size Hardware, Detailed Full Size Plans, and Printed Construction Plans, and building notes. They It was soon clear that the IBA PB26 was ssembty Instructions. |2 or 3 Ch R/C Gear Reqd.) meet SAM FF and R/C requirements. the plane that couldn’t be beaten. It is a COMING 5*" Quaker. 98" Flybaby; *18" Miss America COMING 120" KG-2; 8«" Miss Deleware. 96" Lanzo RB 18" Cleveland Viking; 50" Cleveland Cloudster. ready-to-fly plane from Germany, beau At your Dealer or tifully made, and available from Wilshire a d d $2.00 per order for UPS. Ca. Res*»· Model Center, 3006 Wilshire Blvd., Santa P.O Box #9. Midway City. Ca 9?655 a d d 6% f o r T a x Monica, CA 90403, (213) 828-9362, for $259.95. Sunday was a three ring circus, with Mike Charles took first, and Roger everything happening at once. Larry Roth took third flying IBA PB26s. Mike VINTAGE R-C FLANS Jolly started it off with a demonstration had a Geist 60 (cobalt) in his, and Roger of electric helicopter flying. That was had an Astro 40 Challenger (cobalt) in impressive! The helicopter that he flew his. These planes climb at a 30 degree was the Skylark EH-1, which is sold here angle or better, and in 1-1/2 minutes in the U.S. by Condor Hobbies (17835 they are almost out of sight. They have a 9 FT. WING SPAN Sky Park Circle, Suite F, Irvine,CA92714, wide speed range, which is needed in ALL RIBS β FULL FORMFRS SHOWN ON PLANS 11 714/556-1888). It flies very well, much F3E, which combines duration with PLASTIC ENG.COWLS $ 9.90 PR. CIFAR GUN BLISTERS % 6 . 6 0 PR like the Cricket. In fact, Larry recom speed. In fact, the IBA PB26 holds the mends learning on the Cricket first, European F3E championship . .. pretty A LARGE PLAN SHEETS — Plans $1695 before flying the Skylark. impressive for a ready-to-fly! 6 f t . WING SPAN MODEL PBY-5A Larry Jolly took second with his de ENGINE COWLS t 6 . 5 0 P R . PldílS $12 95 Larry put the helicopter into hover GUN BLISTERS Í4.50P R ADD $2.50 POSTAGE right away, then skated it around a little, sign, the Olympian, which was flown
CATALOG-OVER 50 PLANS JlOO DEALERS WRITE “ walking the dog” , and then flew cir with a Ceist 40 cobalt motor. This design _____ /T i ------cuits of the field at about 20 to 80 feet up. is also very impressive, and is available as WORLD » 1 WIDE He had Roger Roth timing, as there is a kit from Wilshire Model Center for SID MORGAN only about two minutes of run time on $129.95. 13157 ORMOND,BELLEVILLE , MICH.48III u .S -A . the eight sub-C cells. In R/C scale, Addie Naccarato’s quar them again! It is never happy with what After a few circuits, he brought it ter-scale Cub was the dominant entry, it gets . . . it wants more.” down for a low hover, then walked it not just because of its size, but because Thanks for the excellent work that you back to the pits. A thoroughly com of its attractiveness and overall finish. It have done, Michael. Well, add another petent job of flying, both by the pilot flew very well with an Astro 40 Chal chapter in the ongoing debate of Eppler and the helicopter. I would not have lenger (cobalt) motor turning a Top 205 vs. MB-253515.1 would only add that guessed the helicopter was electric Flight 16 X 8 on a 2 to 1 belt drive. It only the differences in drag that we are talking except for the lack of noise. And, to weighed 10 pounds, which is light about are very small, and are probably think, a few years ago an electric heli compared to even the gas powered not very significant in the real world of copter was considered barely possible! quarter-scale Cub. Addie modified the model sailplanes where six-decimal Larry also flew it on a power cord Sig kit extensively to get it so light. airfoil accuracy is impossible, and han hooked up to a 12-volt car battery. It Unfortunately, Addie encountered gar rash, errors in construction, and just flew well this way too, and can fly for an some radio interference (a non-im- plain old wear and tear cause deteriora hour off of a ground based battery. That pounded transmitter was suspected), so tion of efficiency at very significant rates. is the ideal setup for learning how to fly the flight had to be cut short. It looked Eppler 205 or MB-253515? Take your helicopters because you can fly in your so real in the air, and the landing and pick! own backyard. takeoff runs were so pretty, that I’ve That about wraps it up for another I have the kit, and I am impressed by decided that I just have to try quarter- month. Good luck with your next sail the quality of the workmanship, it is well scale electric myself. Dream on! plane project, and happy flying with the laid out and well made. The price, Another beautiful scale entry was ones you have already! $169.95, is quite reasonable com Dave Katagiri’s Super Suburban, a Bra The correct address for any mail pared with other helicopters. The two 05 zilian design, which he entered in coming my way is: Bill Forrey, Model motors needed to power the Skylark are pattern! Furthermore, he took third Builder, P.O. Box 10335, Costa Mesa, CA included in the kit along with the power with it! Dave was entered in so many 92627. Thank you. · cord (you do have to buy batteries events that he couldn’t keep up, so he separately). Larry feels that the flight didn’t enter it in scale. I think it would time can probably be doubled if coball have placed if he had. The Super Subur ban is powered by a Leisure LT 05. Astro Part I . . . Continued from page 16 motors are used, I think he will be trying it soon. Good job, Larry! The Northrop flying wing entered by nize some international competition, (Now that the book is done, I’m going Bill Young is incredible. It uses twin and select a U.S. team. Larry even talked to learn how to fly the Skylark!) cobalt 05s, and even has retracts! The about having an international meet here Take a look at the photo of Larry’s detailing had to be seen to be believed! in the U.S. in 1984! (Perhaps in conjunc charging station: Two Honda genera Unfortunately, there were radio prob tion with the 1984 Olympics to be held in tors, three car batteries, two Astro Flight lems with it, so its flight was short (it Los Angeles? wrf) Larry may be the one AC/DC Auto Chargers . . . wow! Larry suffered minimal damage though). to pull it off if anyone does, judging by believes in doing it right! Roger Roth won first with a very nicely the feats he performed at the Astro Speaking of superchargers, the ASI 3 is done Porterfield (an Astro kit) with an Champs! really impressive; both Larry and Mike Astro 25 cobalt motor. The Porterfield
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Prices subject to change w ithout notice. flies so well that it can win on flight float overhead, “ Why didn't I make this points alone. an official?!'’ Perhaps Jim is unfamiliar The seven-cell pylon racing was fast, with one of Murphy’s Laws: “ The demo my guesstimate was over 60 mph, easily, flight will be perfect, but just fry to do it with times around 2:15 on a 330x60x330 on an official flight!" Jim did take third foot course. Scott Manning won with his in open though. Free flight forever, Jim! “Matched Performance System” super-clean Super Rat, using an Astro 05 In free flight junior, Cynde Waddell for TOP PERFORMANCE cobalt motor. Steve Manganelli took took second, and her sister Kim took K&B ENGINES third with his unique twin Leisure 05 third. Their planes were particularly 16 Airplane - 4 Marine κ&θ fuels k&b glow plugs powered racer (this one was really last). interesting, as they both flew the Truant, 7 B'ends 4 cnotces Dave Katagiri took second with his designed by Jim M cDerm outh, and “Matched Finish System” original design using an Astro 05 cobalt. available as a plan No. 366 ($2.25) from for BEST APPEARANCE The cobalt motors have moved pylon Mode] Aviation. This is a simple all sheet K&B FIBERGLASS CLOTH K&B Micro-Bai oons FILLER racing into a new bracket, you have to balsa plane, and is delightful in the air. It K&B SUPER POXY RESIN K&B SUPER POXY THINNER be a good pilot to keep up with the high was published as a gas 020, but it is K&B SUPER POXY PRIMER K&B SUPER POXY PAINT speeds. perfect for the Astro 020 F/F unit. I K&B MIXING CUPS While all the R/C events were going recommend it to anyone starting out in K&B MANUFACTURING on, the U-control people were having free flight. Kim and Cynde had a blast 12152 WoodruM Avenue - Downey. California 90241 their event. Eleven planes were entered with theirs, Kim got a beautiful thermal in the scale event. These planes are very flight that ended by skimming over the Thanks, Bob, for the best contest ever. well done, most of them were con cars to a perfect landing on the pave Electrics have come a long way, and it structed from Guillows kits, and pow ment, amid applause! was dramatic to see the new “ state-of- ered by the Astro 020. There was every Last, but not least, came the awards the-art’’. RESULTS thing from a D.H.4 biplane to a folding and prizes. Bob Boucher sponsored the F3E SAILPLANE wing Corsair! contest, and came up with nearly $2000 1. M ike Charles, IBA PB26 Geist 60cobalt In free flight scale, Roy Mayes’ Dor- worth of prizes ranging from Astro 15 2. Larry Jolly. Olympian Geist 40 cobalt moy Bathtub powered by an Astro 020 3. Roger Roth, IBA PB26 Astro40cobalt cobalt motors, to books on electric took a well deserved first. The work SEVEN-CELL SAILPLANE flight. Everybody got something. The 1. Larry Jolly, Electricus Astro 05 cobalt manship was lovely. I got to talking with prizes were done on a drawing basis, 2. Steve Neu, Electricus Leisure 05 Roy, and discovered that he spent many while plaques with solar cells from the 3. Rick Schrameck, Electricus Astro 05 cobalt years teaching full-scale aerobatics! He Solar Challenger were given for first OLD TIMER OPEN nas quite a range of talent! through third places. Dave Katagiri and I 1. Larry Jolly, Leisure Playboy Astro 05XL 2. Larry Blakley, Commodore Geist 40 cobalt Jim Ogg entertained me with a beauti got Quiet Revolution books, which 3. Bruce MacAenue, Long Cabin Astro 15 ful thermal flight with his Satellite 320 explain how to get started in electrics! OLD TIMER SEVEN-CELL powered by an Astro 035. Funny thing, (We are the local Seattle experts!) Come 1. Larry Jolly, Leisure Playboy Astro 05XL Jim kept muttering to himself as we on guys, we really didn’t plan to bring 2. Mike Charles, Leisure Playboy Leisure 05 watched his perfectly trimmed plane the rain! 3. Mitch Poling, Brigadier Astro 05 JUNE 1983 WHEN CONTACTING ADVERTISERS, TELL ‘EM MODEL BUILDER SENT YOU! 89 nitrate dope. Believe me, that’s all a OVER 50 CONSECUTIVE STARTS WITHOUT RECHARGING model will require if his methods are INTRODUCING THE employed. NI-STARTER “ What can be done when special PAT PINO INC insignias or company logos are part of A new and completely revolutionary concept ol p ow er for glow plugs in model cars, boats, air the overall paint scheme? Again, George planes. helicopters, anything using the 1 .5 vt. has a clever idea here, and you don’t S tan d ard plug for glow engines Rechargable. (up to 1000 times) Fits in your pocket. Works have to be an artist to do it. Ninety-nine sideways or inverted. Fitsthrouoh cowlings. Uses percent of George’s building comes H e a d Lo ck ™ plug adapter. Stays on the not in the propeller Inci charger & instructions. from plans he has enlarged himself, 9 0 day guarantee After that, if anything fails naturally these insignias and logos are (norm al usage) w e will repair or replace it for only S6. for up to one (1) full year!! S E E Y O U R enlarged as well. Let’s say for example, DEALER OR CALL US - BANK CARDS OK. COD OK. YOU PAY SHIPPING that the overall color of his model is $21.95 yellow. He will then take a piece of See Your Dealer yellow tissue (store bought) or a piece of 13506 Glendundee Dr. white tissue which he has "dyed” yellow, Herndon. VA 22071 and lay it over the enlargement. The logo is then pencil drawn onto the SERVICE (703) 435-5805 tissue. He has brushes which resemble very expensive sable art brushes, and which F F Scale . . . Continued from page 58 are fairly thick in the middle but end in a fine point. The width of a line made by red can then be sprayed as mentioned his brushes can go from very fine to wide before. The masks can be removed depending on how much pressure is leaving nice, crisp lettering. The advan applied. These sell in good art stores for tage of using dyes is that the finish gives under two dollars. George uses a high the same appearance as regular colored quality water soluble poster paint, and tissue. This is the way to go for those who with these brushes, paints the logo or don't like the opaque look. whatever, onto the tissue. When this has SCALE ■ ' / 5 STAND-OFF SCALE Another interesting twist. What do WINGSPAN · 94” ENG.-2.1 to 4.2 cu.m. dried thoroughly, the logo is trimmed; 50 SQ. FT. ROLLED PLANS (2 SHEETS) you do about the small letters and leaving a bit of an edge. It is then applied (NO SPECIAL COWL) $30.M P.P. U.S.A. numbers on the vertical stabilizer? to the model using a coat of clear dope. Send Check or Money Order to: Unless you are quite talented, it is very As the paints used are water soluble, the C.J. WASSERMAN difficult to cut out tiny letters out of dope has no affect on the paints. The 13640 S, W ALL LAK E D ELTO N . Ml 49046 vellum to use as masks. Fortunately, overall affect is sensational. It is a lot there is an alternative. Use dry transfers, easier painting designs on a flat surface C.J.M . PLANS and I don’t mean as a final product. than on a fuselage, wing, etc. These will be used as a mask, as in the One other item I want to mention is PYLON SEVEN-CELL previous example. The technique is a bit that George likes to try different color 1. Scott Manning, Super Rat Astro 05 cobalt 2. Dave Katagiri, Uno Astro 05 cobalt different because it is quite difficult to paints and dyes over colored tissue. In 3. Steve Mangenelli, transfer (rub) them off their sheet onto other words, he might cover a model all Twin Racer Leisure 05 twin the open areas of the tissue between yellow, then spray it with orange or AEROBATICS structure. George applies them ahead of green dye, or whatever. Naturally, the 1. Larry Jolly. Shoestring Leisure 05 time by taking a piece of tissue and results are different than just spraying 2. Steve Manganelli, taping it down on a clean, flat surface. over plain, white tissue. Twin Racer Leisure 05 twin This is done to keep the tissue taut and Now you have no excuses for finishing 3. Dave Katagiri, Super Suburban Leisure 05 immobile while transferring the letters. a model the way you’ve always wanted! R /C SCALE When this step is completed, he care At the last Jum bo-Peanut-M ulti- 1. Roger Roth, Porterfield Astro 25cobalt fully white-glues the tissue onto the Engine Contest held by the Flightmas- 2. Addie Naccarato, Sig Cub Astro 40 3. Bob Sliff, Rearwin Speedster Astro 15 structure, making certain that the letter- ters in December, I saw something that I IR. F/F ing is lined up properly. The water know will be of interest to all you rubber 1. Bob Smith, Country Boy Astro 035 shrinking and the spraying of the scale buffs. Dick Howard, former P-38 2. Cynde Waddell, Truant Astro 020 thinned-out white glue is done in the pilot and model builder extraordinaire, 3. Kim Waddell, Truant Astro 020 normal manner. Next, the color is has come up with the classiest, easiest, F/F SCALE sprayed on. most novel way to make props. Dick had 1. Roy Mayes, Dormoy Bathtub Astro 020 When the color coat is dry, the re several multi-engine models there in 2. Farell Papic, Blériot A7 Astro 020 moval of the dry transfer letters is easily cluding (naturally) a P-38, and a Douglas 3. Bill Warner, Aerotorpille Astro 020 accomplished by placing the sticky side B-26. The third model he had was a very OLD TIMER F/F 1. )im McMahon, Powerhouse Astro 020 of masking tape over each letter. They familiar German job, but one I can never 2. joe Maher, Powerhouse Astro 020 are then peeled off one-by-one. The seem to remember the name of. Each of 3. Art Walispeth.Strato Streak Astro 020 results are very gratifying. Remember, if these flying beauties had landing gear in OPEN F/F you need red, yellow, or whatever color the retracted position. Flying models 1. Joe Tschirgi, Olive Drab Astro 020 for the letters, spray the area with the this way is definitely hard on propellers. 2. jim McDermouth, Hummer Astro 020 appropriate color, let it dry, and then Dick has overcome this problem with his 3. jim Ogg.Satellite320 Astro035 place the dry transfers in place. The ingenuity. I might add that all of these JR. C O N T R O L LINE excess color can be removed with the models had three-bladed props, and 1. Frank Godeil, DH 4 Astro 020 each had a set of right- and left-hand 2. Eddy Paz, P-51 Astro 020 bleach as mentioned before. If the 3. John Godeil, F6F Astro 020 letters are to be black, some of you rotating props! So, you know he wasn't CONTROL LINE OPEN might just want to leave the black using commercially made plastic props. 1. Lon Tardiff, F4U Corsair Astro 020 lettering in place. I wouldn’t, the effect Dairy products, such as cottage 2. Addie Naccarato, is just not right, plus, the addition of the cheese, are being packed into plastic Bell Airabonita Astro 035 thinned-out white glue and the dye may containers instead of the old waxed 3. CarloCodel,Schweitzer 1-30 Astro020 alter its appearance. paper type. Dick consumes a brand that When all of the detail work has been comes in plastic. From these he cuts out accomplished, then Georgecomes props with scissors, any blade shape or along with a single coat of thinned-out size. What’s really exciting about all this, 90 MODEL BUILDER
------X— would have it, time ran out, and I didn’t PEANUT SCALE MODELS Kit. $5.95 Λ k U u get it built. The airplane had a lot of / ZERO MILES M-18 !i* Π o b b y 1 1 o r n / PIETENPOL DRUINE potential as a scale subject. The surfaces ’ PIPER CUB C O UG AR are all straight lines, and the structure is ANDRESO N GIPSY MOTH very light. The pilot sits under the wing, Wing Span- 78i* MUSTANG LACEY M-10 GANAGOBIE Wing Area--568 Sq" and his whole body is visible. The wings Rubber Powered SPORT MODELS ace wire braced. I think it would make a j v s r w \ BABY ACE $6.49 ONE NITE 28 $695 good indoor peanut model. — ONE NITE 16 $5.95 Three-view drawings and a photo can PRAIRIE BIRD ♦ STHINGLESS $4.95 be found in Ultralight Aircraft, a rather The SENSOAR glider KIT $5.95 PECK R.O.G. $1 95 new book on ultralights by Michael A. BLIMPS CONTROLLED Markowski. This 288 page book is A HOBBY HORN Exclusive!' A HOBBY HORN Kit! The SENSOAR Glider Kit is a high quality kit with 11 and 13 FOOT LO N G .KITS OR crammed full of the new breed of Machine cut t sanded parts. Select quality balsa READY TO FLY N O W IN THREE and spruce. Detailed plans, and written instructions. COLORS GRAY. ORANGE and machines. Plans, photos, engine details, For THERMAL or SLOPE or 05 ELECTRIC POWER. YELLOW. LO W PRICES and every thing you need to know to fly VALUE PRICED at £16.00 HARD TO FIND ITEMS CATALOG FI.00 one. The publisher is Ultralight Publica tions, Post Office Box 234, Hummels- Peck-Polymers •"“røSffir town, PA 17036. p t W Semi-Kite Combined with full stnpwood B OX 2498 -M B LA MESA. CA 92041 and plan. (Sow Incl. Wire. Window, etc. Mat.) Similar aircraft which would be good (Note: These may be purchased just as semi- k its . o r with plans - -w rite or call for prices.) that the room is category I, II, III, or IV, for indoor scale and peanut are: the 1936 Buccaneer-84"-$51; 1938 Clipper MK I-72"--$39 then you can look for the current record Eagle, the Birdman RB-1, the Goldwing 1937 D e lia !re S p ts 'e r-1 0 8 " -$ 6 1 . 1940 R a n g e r - 4 6 "- $27 1939 Mercury-72"—$56; 1935 Misa America-84"---$59 times for that room. This list is printed (a canard), and the Weedhopper. I’m 1941 P la y b o y J r .- 5 4 " — $29; 1941 P la y b o y S r-8 0 "-$ 4 6 1938 Power House-84" —$43; 1940 Sailplane-78"— $74 about four times a year in that AMA sure there are many more. 1940 So Long-50"—$28: 1938 Trenton Terror-77·-$32 magazine, Model Aviation. PLANS AVAILABLE 1939 Z iD P e r- 54" — $ 48; 1939 Korda Wakefield- 44" - $17 ~ in____ mMOPtL CO. Semi-kits Combined w /strip GETTING STARTED IN F.A.I. INDOOR David Aronstein now has two ultra 1936 Flying Quaker-84"-$49: 1937 Quuker Flash-67"$38 1937 L o n g C a b in -7 8 "-$ 4 2 ; 1937 A ir C h le f- 6 1 " ------$40 Modelers are sometimes reluctant to light plans which will costs you $1.00 STRUCK’ S 1ΛΛΟ 74" Span, 835 Sq. in. jump into building F.A.I. duration each. A 22-inch Cloudbuster peanut that ■ . ■ ■ l o w SEMI KIT (Plan Incl.)- $33.00 models. They look so delicate. Maybe has flown for one minute 56 second. This llE W I ill B I Combo (Full) Kit ------$ 6 3 .0 0 SCALE PLANS end DRAWINGS you have wanted to try it, but the is a very complete plan . . . two sheets. S 50 HEINKEL HE 100D. 62". .60s $10.00 microfilm is difficult to pour at first, and The second model is the canard Gold SHIPPING AND HANDLING: π the wings look hard to build. First, let’s wing. An 18-inch peanut with enclosed Up to $8.00 add $1.50. $2.00 PP/lst Class $8.01 to $20.00 add $2.25. A copy will be sent talk about building the wing and stabi fuselage. Write; David Aronstein, 50 $20.01 to $45.00 add $3.00. freo—whon requeated- lizer with templates. Pasture Lane, Poughkeepsie, NY 12603. $45.01 to $70.00 add $3.50. with an order. ______and over $70.00 add $4.00. HOBBY HORN When constructing heavy outdoor Add 20 percent for postage when CA Addressees add 6% tax. ••hobby specialties·· models, pins can be inserted through ordering. Send MO. Visa/MC( f♦Exp. ) 15173 Moran Street |B | or Check (allow up to 30 P.O. Box 2212 the wood and into the plan. The pins will WEST BADEN days for check clearance.) W estminster. Ca 92683 not usually damage the wood. This is not COD Exact Charges + $1.50 1714) 893 8311 Q Remember that INDOOR WEEK is Hdl. (Cash O nly)(All UPSJ 1714) 899-1203 so with indoor duration models. The scheduled for June 11 through June 18, wood is fragile and narrow in width. A 1983 at West Baden, Indiana. pin will split the wing spar. The tech Here's the schedule of events: 12. A guywire snapped on the left nique when building indoor is to cut a Sat., June 11: Check in . . . all day wing and changed the trim. 1/32 in. thick cardboard template to the practice. None of the above excuses could be shape of the wing or stab, and draw Sun., June 12: Practice till noon. Easy B, considered your fault. That’s why they lateral lines to mark the rib positions. A and Paper Stick till 6:00 p.m. FID prac are so great to use. V-shaped notch (1/2 in. x 1/2 in) is cut tice afterwards. FIGURING CEILING HEIGHTS out of the cardboard where the rib Mon., June 13: Handlaunch glider How high is the ceiling in the room touches the leading and trailing edge of 8:00 a.m. till noon. Indoor stick and FID where you fly your models? Do you the template. After the wing spars are noon till 8:00 p.m. (four two-hour know for sure? Many times we will ask stripped, the wing tip outlines are rounds). the custodiam at the gym or the rec wrapped around a form and baked to Tues., June 14: Manhattan and Boston center this question, and he will usually shape in the oven. The wing template is Cabin 7:00 a.m. till 10:30 a.m. (turn in all say something like, “ It’s 34 feet.” But pinned down to the building board over scale models by 9:00 a.m.). Pennyplane suppose you are planning a record trials, a sheet of waxed paper. The wing spars and Novice Pennyplane 10:30 a.m. till and you must know exactly. What do are laid against the edge of the template, 3:00 p.m. Two FID rounds, ROG Cabin you do? and a pin is inserted alongside the spar. 3:00p.m. till 7:00 p.m. Banquet :7:30 p.m. Many rooms are constructed with This pin gently wedges the spar against Wed., June 15: AMA Scale, Peanut concrete or cinder blocks. It’s fairly easy the edge of the template. The ribs are Scale (51 -A) 8:00 a.m. till 1:00 p.m. to measure one of these blocks (plus the cut (along the edge of an aluminum Peanut Speed, Unlimited Speed, Kit Plan mortar joint), and then count the num template) and cemented to the leading Scale. Start of ENART 1:00 p.m. till 9:00 ber of blocks to the ceiling. and trailing edge of the wing. These ribs p.m. All “ Heavy” models— Manhattan, I’ve also seen some modelers who will fit in the V-shaped notches in the Boston, Pennyplane and Novice Penny- have used a small optic device to mea template. Position and cement the wing plane. sure this distance. They lay on the floor, tip outlines. Thurs., June 16: All light models 7:00 sight through the device, and come up If you need some practice pouring a.m. till 7:00 p.m. FID, HL Stick, Paper with a height in feet. However, I’m not microfilm, but want to fly right away, Stick, Paper Stick, “ A” and Cabin R.O.G., sure just how accurate this method is. why not cover your F.A.I. model with Helicopter, Autogiro, Ornithopter (turn I think the most accurate method is to Microlite or Absolite, and fly it that way in all scale by 10 a.m.). ENART Banquet send a gas filled balloon (tied to a string, till you master the microfilm? Flying a 8:00 p.m. of course) up to the ceiling. When the model of that size will help you gain the Fri., June 17: Glider and Scale day. 7:00 balloon is just touching, mark the string touch necessary to move into the super a.m. till 9:00 a.m. (see Wed. above at floor level, and bring down the lightweights. events.) Start of 24 hour World Peanut balloon. Disconnect the string and lay it ULTRALIGHT SCALE MODELS Grand Prix 7:00 p.m. out across the floor. A carpenter’s tape Have you indoor scale modelers con Sat., June 18: End of Grand Prix 7:00 measure laid along the string, plus the sidered going after the Fikes and Laceys p.m. Peanut Banquet 8:00 p.m. height of the balloon, will give an with ultralight aircraft? Last summer I Get those models built and trimmed. accurate measure of the room height. drew up the Kimberley Sky Rider for Fly with the best in the United States. Check your AMA rule book to verify Jumbo outdoor rubber scale. As fate You’ll never forget it. See you there.
92 MODEL BUILDER Write to Ken Johnson, 16052 Tulsa ENDURANCE Street, Granada Hills, CA 91344. · 1 Joe Tschirgi O.D. FOX 45 BB RC 2 Jim McDermoth Hummer WE’VE MADE IT 320 Satellite 3 Jim Ogg BETTER THAN EVER! Astro Part II .. .Continued from page 63 02 REPLICA 1 Jim McMahon Powerhouse entries in that event (I didn't enter as I 2 Joe Maher Powerhouse had to judge, or we would have had 3 Art Wahlstedt Stratostreak more). Although it didn’t qualify, Bob JUNIOR Haight’s four-engine Handley Page HP 1 Bob Smith Country Boy 42 "Helena” was a real crowd pleaser. 2 Cynde Waddell McDermothvolt This five-foot span model was re 3 Kim Waddell McDermothvolt engined with Astro 035 motors instead the 02 motors used before. It seemed to have much more power, but it was R/C Autos. . . . Continued from page 45 found that the wheels had swelled from the moisture and were dragging on the pieces on the original Phaser) to allow axle. Bob did get one really long taxi starting that big main event on tires that which took the whole width of the are just barely over the legal minimum The Fox 45 BBRC has been further refined runway. After the long taxi, it managed and modified to meet today's flying needs and to size. operate on economy fuels. It now features an to rise off the ground for a little while, The only problem 1 can find with the Improved head button, nitrided steel cylinder, and but not long enough. Speaking of long front end is that as caster is changed, a con rod bushed both ends. The crankshaft has taxis, Carlo Godel won the prize for that larger throw and more counterweight. The cast toe-in varies also. Fortunately, this is aluminum piston is fitted with a freely rotating with his 1-30 monoplane. It must have easily reset with the Du-Bro ball links high tension ring. The carburetor Is the highly taxied 500 feet down the runway,straight used in the steering linkage. Speaking of acclaimed Mark X B size. The beefier than average as an arrow. crankcase resists crashes exceptionally well. this linkage, it is worth copying no Powerwise, the Fox 45 BBRC Is still unsurpassed. Roy Mayes got top scale points with matter what kind of car you race. The It will nicely handle most airplanes designed for a his Dormoy Bathtub. This model was ball links, of course, are Du-Bro parts, 60. really something to see, it featured hand and the main pushrod is nothing more 24500 Fox 45 RC with Bushing Main S54.95 made spoke wheels, working landing than the inner rod taken from Sullivan 24600 Fox 45 B B R C ...... 74.95 gear, a nicely detailing engine, and (Pylon) GR5F tube-in-a-tube pushrod 90252 Fox 45 M uffler...... 12.95 delicate rigging. This was the first time sets commonly used in R/C model 50404 Motor M o u n t...... 9.00 Roy had ever tried an R.O.G. with this aircraft. Studs having 2-56 threads are model, and as the Bathtub is rather short screwed into the ends of the tube, and coupled, I was more than a little worried. then the ball links screw onto the studs. F O X MFG. CO. I shouldn’t have been though, it took off Neat, light, easily adjustable, and no 5305 T0WS0N AVE FORT SMITH. ARK. 72901 very well, and flew well in the bargain. soldering! I’ll have to admit to having Our Hot line: (501) 646-1656 Flightmaster President Ferrell Papic used these Sullivan pushrod sets in many flew his Blériot No. 7 Monoplane. He an R/C model, yet I never thought of had top flying points in scale, in fact, he using the inner rod for steering linkage! The steering servo is firmly bolted in got top score in two out of three flights. Do be careful with the ball link setup, place using simple, nylon posts.... light, As Ferrell is a real scale modeler, he flew however. The main thing to be concern effective, and strong. The receiver, his model during the rest of the meet ed with is that the balls don’t fit the ball located immediately to the rear of the just for fun. sockets properly, at least for this appli steering servo, is stuck in place with Nyle Nagle came down from Las Vegas cation. What you should do is chuck the servo tape. Here we are using the new to fly a P-47. The wing loading was rather ball thingies in a drill, and sand the balls (and very small) Novak NER-25 receiver, high, and it didn't do too well in flight, down some with fine sandpaper or but there is room for most any other but he sure is a fine builder. As he won crocus cloth. Keep at it until a brand- brand of receiver, in fact, the car was first the book The Quiet Revolution, I’m sure new ball link will swing freely on the run using an older model Futuba. he will have better luck next year. ball. If you don’t do this, you will find From the receiver to the rear of the Bill Warner flew his Aero-Tropille, that the slight amount of friction present car, things get a little complicated. Not which is a pusher monoplane with in the ball links will keep the steering from a parts-count standpoint, but eliptical dihedral of about 1913 vintage. from centering . . . most unhandy. because most of the pieces do double This also flew well, but lost points as Bill I assume the ROAR rules have been and triple-duty. For instance, the post wouldn’t R.O.G. the model. I can’t say I bent far enough by now allowing the that anchors the roll-over antenna also blame himthough.asit had small wheels front of the chassis pan to be legal as a clamps the forward end of the T-bar to and the runway would have damaged "bumper” . At least that is the assump the chassis pan, as well as providing a the model if it had ground looped. tion, as few of the top racers are using a mount for the forward side of the We did something different this year. separate bumper, and the Super Phaser throttle servo. The thin ’glass piece that Bob Boucher donated motors and other kit doesn’t even contain one. Personally, appears to be just a mount for the goodies as prizes. Contestant’s names I am using bumpers from the Phaser, resistor, is also a clamp to securely locate were put in an Astro Flight charger box, although they are cut down a little. the throttle servo. The post which is and then drawn by Lonnie Cope (who Clamping bumpers down, or in the case located just in front of the motor, clamps didn’t fly, but helped out in the contest). of a stock Super Phaser, standing alone the T-bar to the pan, is a mount for the Everybody who entered the contest on the pan are the neatest body posts rear of the servo, and acts as a pivot for received something. As we did this at the you'll ever see this side of the numbers the forward end of the shock. By now, end of the contest, it sure kept the fliers used on Delta’s 1/8 Super J and Eagle most of you have heard that this car is from leaving early! cars. These posts are machined from light in its stock condition (sorry I forgot Well, that’s about it, except that many aluminum barstock, tapped 8-32 in the to weigh mine, and the scales are out on thanks should go to the people who lower end, and then drilled through to loan). Now you know at least part of the timed and helped me with the contest. make then very light, yet much more reason: one part is made to do as many Hope to see you all next year. durable and long lasting than the more jobs as possible. RESULTS OF CONTEST common nylon posts. Two sizes of these The rear pod is aluminum, and it does SCALE aluminum posts are available. Fine all the obvious things in addition to 1 Roy Mayes Dormoy Bathtub adjustments to body height are done acting as a heat-sink. I’m not sure if this is 2 Ferrell Papic Blériot No.7 with the body support collars seen in the a positive feature or not. It certainly 3 Bill Warner Aero-Tropille pics. can’t hurt, yet a number of other cars use JUNE 1983 WHEN CONTACTING ADVERTISERS, TELL ’EM MODEL BUILDER SENT YOU! 93 40 and/or suntan lotion traction addi tives, offers really super bite. Having only one decent four-cell pack to my name, I raced on six-cell packs. This indoor track is definitely a track for BEECHCRAFT SKIPPER: Quarter-Scale. four-cell cars running Modified Class 90” wingspan, 1,200 sq. in. area, .90 or motors . . . It is a very tight track. I had larger engines. Plans, $18.50 never raced on this track before, and O t h e r plans: after two practice runs (which were BEECHCRAFT BARON MODEL 58: 2 V Scale 85 interrupted by my having to get the w ingspan-1000 sq in (3) 3 x6 sheels $15 00 Beechcrafl Fin Insignia S2 00 tweak out of the car), I was far from BEECHCRAFT BONANZA A36: 2*» Scale-86 dialed-in, although the car was pretty wingspan-1300 sq in (3) 3 x6V/ sheets S17 50 close. Never did get the tweak just perf, Add $2.00 postage inside U.S. & C a n a d a Include $2.00 for plan rolled In tube and I ended up "cheating” on that by Overseas orders add $10.00 postage putting a Kraft staple-gun transmitter to Alabama residents add 6% sales tax good use, setting it for equal left and BUD CADDELL right turns. This is not suggested prac 1525 Badham Dr Dept. M. Birmingham. AL 35216 tice; the car should be set flat first. 205 822-4312 DEALER INQUIRIES INVITED______The first heat netted me 39.5 laps, several laps off the pace shown later by a unplugged. I could have wired the pack couple of really smooth racers who have so that the crossing leads were at the this track, and their cars, really dialed. I front of the resistor, thus avoiding any was a little down about that . . . until possible loosening and unplugging, but later when it was let slip that Dave Clark, I prefer to keep as many leads as pos a racer who regularly bucks heads with sible away from the Rx. me in both 1/12 and 1/8, was in the 36- Setup of the car is straightforward, lap bracket for his first several visits to even though it is somewhat different this track. than most other cars. Toe-in can be set at In ths second heat, I went to “ A” rears zero degrees. I set mine so that there is (1241 series), and the car turned a little just a very slight amount of toe-in, tighter. However, this heat turned into mainly so I'm absolutely certain there one of those let’s-all-crash-our-brains- isn’t any tow-out. Any tweak in the out heats, and I dropped a lap in the chassis should be shimmed out at the process. For the last heat, I slipped in the forward end of the rear pod, not at the four-cell pack and a Delta modified front cross-bar. This car took .033-worth motor. The more controllable power of of shim at the right hand screw location this combination brought the laps up to a to get it all squared up. 39.9 total in the eight-minutes-and-stop Caster should probably be initially set scheme of things. This put me in the B at zero degrees and increased only if you Main where I got second or third, this need more power-on steering. Most of time with the four-cell pack, hot Delta Delta’s own Team Cars are running zero motor, “ A” rubber out back, and a degrees to two degrees caster, any caster switch to “ A " in the front for even more in excess of five degress indicates a need steering. for softer front tires. Well, usually that is Throughout the day's racing, the car the case, harder rear tires w ill also was very smooth, and even with six-cell increase power-on turning, as well power was easily controllable. All ad running a flatter wing, pulling the wing justments had a predictable affect on the nylon parts out back and don't seem to altogether, trimming the rear air dam on handling of the car, no tricks at all, which suffer from it. the body, and so on. For the first time is a trademark of all Delta race cars. The T-bar feature has probably been out, run on the stock, kit tires ("B” fronts SO, HOW DOES IT STACK UP? discussed adequately, but it has been and “ A” rears). For some real soft, sticky Well now, things change quickly in suggested to me (not by Delta, but by an tires try Delta’s new TR1241 series, racing, all the manufacturers are out to independent racer all excited and giggly available in “ AA” , "A ” , and “ B” com have the hot tip in chassis, but at this about his new Super Phaser) that be pounds (TR1240 series tires are supplied point in time, they are all trying to get cause this part is so small compared to with the kit). The 1241 tires have been their cars up to the state-of-the-art and the main chassis, that in severe crashes, working great on this car with the "A ” the Super Phaser presently determines this easily replaced and inexpensive part grade being the best for our tracks, and where that is in 1/12 racing. If you just will break first. Could be, but after they have only been used as rear tires so have to have the best, and are willing to looking at the car closely, my feeling is far in conjunction with TR1240 "A ” pay some extra money for it (Delta that a lot of the impact’s force would compound front tires. I never thought I products are nearly always more money), simply be absorbed by the shock ab would see the day when we could use the Delta Super Phaser is theonly choice sorber, and I would be very surprised to that soft a front tire and still able to as of this writing. · see either the pan or the T-bar break. I actually control the car, but the Super haven’t broken anything on the car Phaser loves it. pictured, but then I have only broken RACING IT ... Counter...... Continued from page 10 one 1/12 in all of my 1/12 racing, If the truth be known. I’m not super- including the nasty and fast, gas- enthused about racing indoors, but at 603B). powered cars. the time, that was the only show in town A good application for this combina Even though access to the motor . . . so it was off to Tacoma to race with tion of motor, gear drive, and battery is appears to be limited, actually there is the T.E.A.R. group (Tacoma Electric an “ 05" Open Class electric sailplane no problem. Loosening a single set Auto Racers). T.E.A.R. is a really out such as: the Ultra IV as featured in screw at the forward end of the shock standing bunch of racers who keep Model Builder, January, 1983; theElectra allows slipping the locating pin out, and absolutely no secrets when it comes to Lite; any lightweight, 100-inch sailplane; then the shock can be folded up out of helping new racers get their cars setup or any stretched-wing two-meter. Per the way. Same deal for changing battery for their track, which is the usual indoor/ formance is rated at: climb, up to 1,500 packs, except that the motor needs to be outdoor stuff that, combined with WD- feet in 90 seconds. Three 90-second
94 MODEL BUILDER climb out (per single charge) yield up to'20-minute flights each. Eliminates GLITCH problems associated with long servo leads. Write or call Leisure Electronics for any further information or ordering Eliminates need lor voltage robbing chokes and other devices with instructions: 11 Deerspring, Irvine, CA leads over 15" long ^ _____ 92714, (714) 552-4540. Modern CMOS IC technology ^ ^ ★ ★ ★ Uses less than 0.5 milliamps at 4.8 volts J-5 Enterprises is announcing its relo STOP Power lines are capacitor filtered cation to 256 Schuman Drive, New Available in 4 versions with connector installed: market, AL 35761, with new phone $10.95- Single Channel, single servo drive (Single) GS- number (205) 852-2566. The relocation $12.95- Single Channel, two servo drive (Wye) GS-1Y was necessary due to the tremendous $14.95- Two Channel, two independent servo drive (Twin) GS-2 response from the United States, EMS $l7.95-Two Channel, two servos per channel drive (Twin Wye) GS-2Y Canada, and European countries for its • Overall lead length is approximately 6" to 8” line of boat and airplane kits. The new • Modeler must furnish own longer extensions as required ____ production facility will provide faster SDecifv Radio ®1.00 Shipping and Handling on Pre-Paid orders, add service, and C.O.D. orders can now be μ ' 6% for California residents. Mastercharge and Visa accepted from anywhere in the U.S. 6175 PALO ALTO DR.. ANAHEIM, CALIF. 92807 (714) 637-2161 ($3.00 service charge on C.O.D. orders). Shipping is included for orders larger than $25.00 (under $25, add $3.00 ship military and civilian aircraft. A 16-page ping and handling). catalog is available, write to Scale Plans J-5 presently is developing a drive and Photo Service, 3209 Madison Ave., train accessory which will allow the new Greensboro, NC 27403, (919) 292-5239. Quadra Q-50 engine to be used in ★ ★ ★ model boats. Watch for future The Champion Model Aeroplane Co., announcements. Inc. announces its latest scale airplane, ★ ★ ★ the Stampe SV-4 Standoff Scale French David Diesel Development, Inc. now primary trainer. This 56-inch span bi has a really nifty converted Cox-020 plane kit is superbly hand-crafted with glow engine which runs on CO2 . No “ Super-Kit” prefabrication. Outstand other details were provided, so if this ing features include: preformed and idea turns you on, write to Davis Diesel, brazed cabane strut assembly; machine P.O. Box 141, Milford, CT06460. You can cut formers; and machine shaped, VL -102 order the conversion for $39.95 plus notched, and grooved lending edges. ELECTRIC $2.00 postage and handling. This kit will satisfy the most critical PROPULSION Another new product in the Davis builder. Diesel line-up is a very handy little set of SYSTEM For more information and prices, Send y “ 12 pocket-sized drills sizes 50 through 70 write to Champion Model Aeroplane 50c for for only $10.00 plus $2.00 postage and complete Company, Inc., P.O. Box 891, Wood- illustrated handling. (Extra sets of drill bits are bridge, NJ 07095. Í CATALOG ^ FAST M $4.00.) Now you can drill tiny holes in ★ ★ ★ CHARGE inaccessible places without electricity Striegler’s R.C. Supply, 5831 McKnight, CONSISTENT wherever you go! Houston, TX 77035, (713) 729-5652, has a PERFORMANCE ★ ★ ★ couple of interesting engines to sell. St. Croix of Park Falls, Ltd., P.O. Box Immediately available are the Magnum QUIET OPERATION - permits Hying most anywhere- 279, Highway 13 North, Park Falls, Wl 91 four-stroke, and the replica, 1945- city parks, front yards, etc. 54552, (715) 762-3226, has released vintage, Mechanair ignition engine. LIGHT WEIGHT - 2VŽ O z - but powerful enough for information on a brand-new complete The Magnum 91 is imported from models weighing up to 10 o z kit which it is producing, called the England. This 31-ounce engine is ideal INSTANT STARTING - 110 priming, no continuous Golden Falcon. The Golden Falcon is for scale applications. It can be made to flipping of prop to start designed to be the ideal beginner's R/C run backwards by simply switching the airplane. It’s super-stable flight charac pushrods! The Magnum 91 is a strong MORE EFFICIENT - lower rpm - lower running cost teristics take the trauma out of R/C flight brute of an engine which will turn a 16x6 CLEANER - no fuel to mess up your plane. training; yet, the full four-channel prop at 7300 rpm on five percent nitro, control and semi-symmetrical 58-inch 10 percent oil, glow fuel, and do it PRODUCTS wing make it capable of performing quietly. Watch for V-twin and three- 7B71 ALABAMA AVENUE . »16 many aerobatic maneuvers when the cylinder radial versions, coming soon. CANOGA PARK . CALIF 91304 pilot is ready to try them. The Mechanair replica is based on the III, Miss Budweiser, Atlas Van Lines, Pay Excluding the four-channel radio and pre-WW-ll Astral 5.9cc ignition engine 'n Pak, and many others, are available in .19 to .25 glow engine, this kit contains which was marketed as the Mechanair 1-1/2-inch-to-the-foot scale. All boat everything needed to build a complete between 1945 and '46. It has an increased plans are for built-up wood frame flying airplane, including glues and displacement of 6.9cc (or about ,42ci), Monokote! Jig-assisted assembly en construction, and conform to both 10mm Champion plug, top quality mate IMPBA and NAMBA guidelines. For sures easy, accurate construction. En rials and workmanship, and will turn a gine mount permits easy removal of further info and free catalog, send a Top Flite 12x6 prop at 6500 rpm. SASE to: Newton Marine, 14518 167th engine and tank. Write for free bro Write to Striegler's R.C. Supply for chure and prices. Factory direct sales. PI. S.E., Renton, WA 98056. details. ★ ★ ★ ★ ★ ★ ★ ★ ★ For those scale modelers looking for Scale Unlim ited Class hydroplane Jet model Products announces the scale plans and documentation, we enthusiasts will want to know about release of Tom Cook's legendary F-4 hereby inform you of a relatively new Newton Marine’s plan service which has Phantom II kit in two versions. scale service known as Scale Plans and a 300-plus selection of scale plans for The Deluxe kit includes: F/G fuselage Photo Service. This service features kit competition hydros which raced be and inlets; foam wing and stab cores; type plans, factory or best-source draw tween the 1950’s through present-day. two Turb-Ax fans with two (2) modified ings (enlargements), and both B&W and Famous hydros such as: Slo-Mo-Shun- K&B 7.5 engines; OS 7DV carburetors color prints of literally hundreds of IV, Miss Tnriftway, Shanty-I, Hawaii Kai and tuned pipes; assembled and tested JUNE 1983 WHEN CONTACTING ADVERTISERS, TELL 'EM MODEL BUILDER SENT YOU! 95 items of over 225 manufacturers . . . This catalog has one of the largest selections YES-SIR.YES-SIR, THREE BAOS FULL ! of sophisticated modeling and train hobby products to be found anywhere. 4 -™ A v a il a b l e fi/o yj Available in three versions: Models (only), Trains (only), and a combination of both. 5 > A ! ^ i a Contact A&L Dist., Inc., at P.O. Box t 7147, Van Nuys, CA 91409. ★ ★ ★ 3 Λ /Τ ϊ £ Λ/1/Λ13Γ« or tLAAfS-SømZ P*./c£ / Flite Line Products, 3207 34th St., Lubbock, TX 79410, introduces its newest walt mooney now offers 4-bags of peanut scale plans product, the Fun Fli 40. This sport flier is all well testeo designs, at only fsoo each a good machine for fun flies, club racing, EACH BAG FEATURES FOURTEEN PEANUT PLANS, one-design events, and pattern practice. ONE OTHER, PLUS PHOTOS AND INFORMATION Light wing loading and wide perfor mance envelope are two of its strong SENO * 1 0 0 FOR COMPLETE LISTING AND SAMPLE PLAN TO: points. Some basic stats are: wingspan, WALT MOONEY, 2»l2 CARRILLO MESA OR 51 inches; wing area, 510 sq. in.; four SAN DIEGO, CALIFORNIA «2123 - channel operation; length over all, 40 inches; weight, 3-1/2 to 4-1/4 lbs.; lane launching equipment, they now engine, .19 to .40. For more info on this NO TIME TO BUILD? fast-building, complete kit, write to Flite TRY OUR "OLD TIME" F/F-R/C AIRCRAFT ave available a new F3B style winch FULLY ASSEMBLED COMPONENTS spool designed specifically for high Line, and tell ’em Model Builder sent ya. speed “ zoom” launching techniques. ★ ★ ★ The all aluminum reel features a four- Oh-my-gosh! That’s a big ’un! Would inch diameter by four-inch wide (plate- you believe a 2.6 cubic inch, Schnuerle to-plate) center hub, and two 10-inch ported, rear rotary disc valve, chrome diameter, 1/4-inch thick end plates plated cylinder, rear exhaust, transis which are securely bolted to the hub. torized ignition, dual piston ringed, The hub is bored for a 5/8 shaft, but muffler and mount equipped, 4.6 lb., other sizes may be special ordered. Two GIANT Scale engine? The Bantam 2.6 is a new, designed-from-the-ground-up- IDEAL FOR BEGINNERS A EXPERTS 1/4-inch steel pins attach the spool to 72" Span - 29 to .40 Engine Size (Less Wheels) the shaft. Write for more facts and stats: for-modelers, Ben Shereshaw type 2-3 Channel Operation, or F/F biggie . .. and if that doesn’t get your Quality Built Components of Balsa. Spruce & Ply. RLF Products, R-3 Box 360, Paoli, IN Formed Spring Steel Landing Gear/Tail Wheoi Assembly 47454. attention real fast. . . well, you probably FULLY FRAMED - UNCOVERED $149.95 Add *800 ★ ★ ★ aren’t “ into” big model aircraft anyway. NEWI NOW IN KIT FORM WITH If you are interested in this BIG Bird type FUSELAGE SIDES PRE BUILT $89.95 Two engines from Roush Manufac Th» « « to · l i t · AS cow» on—it» p'»rmt /rrvtofl of this “ Over the Counter" section of Oakridge, NJ 07438, they’ll be happy to the mag. send you more facts and details. engine/fan units; custom made Air The first one is the new Cobra Jr. 1.3 ci ★ ★ ★ Command MK 20 landing gear with engine, the first of "a new breed of Pettit Paint Company, manufacturers scale aluminum struts and tires; canopy engines from Zenoah in Japan.” The of Hobbypoxy products, announces the with complete interior; stab actuating new Cobra Jr. has been designed by a addition of four new colors to its line of mechanism; drogue chute and hard Hallograph Computer to achieve the epoxy enamels. The new colors . . . ware; hand-cut balsa and ply bulkheads; ultimate in weight reduction, perfor Bright Orange, Sky Blue, Cream, and and the list goes on! mance, and quality. It weighs a scant 2.5 Maroon .. . are blended to precisely The Semi-Kit includes: F/G parts; lbs. (barely more than a .90), and pro match Super Monokote covering film, foam wing and stab cores; canopy; duces a rated 1.5 hp at 8000 rpm. Will fit allowing the modeler to paint or trim exhaust ducts; stab mechanism; plans; .90 powered models. areas that are d ifficu lt to cover. Six and instruction booklet. The improved engine is the popular others are available to match Monokote For more inform ation and prices, Cobra 2.3. What’s improved is the new colors: Bright Yellow, Bright Red, Dark write: Jet Model Products. 304 Silvertop version cylinder head with better com Blue, Silver, Black, and White. Addi Rd., Raymore. MO 64083. bustion chamber and porting. Perfor tional Hobbypoxy colors are: Cub ★ ★ ★ mance is up, the price is the same . . . Yellow, Dark Red, Stinson Green, light It seems that every month T and D which is your cue to write for more Blue, Gray, and International Orange Fiberglass Specialties comes out with information at the following address: . . . for a grand total of 16 colors. That’s another F/G cowl (or two, or three.. .). Roush Manufacturing, Rear 3405 Cleve. more than any other two-part epoxy Well, this time it’s a Gee Bee R-1 cowl, Ave. S.W., Canton, OH 44707. paint manufacturer. Write to Pettit Paint landing gear fairings, and wheel pants in ★ ★ ★ Company, Inc., 36 Pine St., P.O. Box 378, quarter-scale! That’s the big of it Okay all you FAI/F1A glider fliers, Borough of Rockaway, NJ 07866. the small of it is the wheel pant (one listen up! The Koster Digital F1A Glider ★ ★ ★ piece) and cowl for Bill Effinger’s “ Snow Timer is now available. If you want the Squadron/Signal Publications, pub White” 20. Also worthy of note here is ultimate in reliability, extreme accuracy, lishers of scores of historical aviation that T and D has available 1/4-in. wire fail-safe operation, and lightweight D/T books, has just released three new gear (brazed and reheated) for the Gee devices, you must take a look at this little books, A-20 Havoc in Action, Messer- Bee R-1. An SASE will bring to your mail beauty. schmitt Bf 109 in Action, and Air War box more info, as well as complete list of Write to Koster Digital, P.O. Box 54, Over Southeast Asia. These books are F/G parts. The address is: T&D Fiber DK-3400 Hillerod, Denmark for addi very valuable to scale enthusiasts who glass Specialties, 30925 Block, Garden tional stats and info. are looking for scale documentation for City, Ml 48135. ★ ★ ★ their latest project. For a list of all of ★ ★ ★ Squadron/Signal Publications books, RLF Products was rather pleased to A note to hobby dealers. A&L Distri send a large SASE to: 1115 Crowley Dr., make the recent announcement that in butors, Inc. proudly presents its all new Carrollton, TX 75011, and ask for it. addition to their existing line of sail- Dealer Sales Catalog containing 20,000 ★ ★ ★
96 MODEL BUILDER Argus Books Limited, P.O. Box 35, Hemel Hempstead, Herts HP2 4SS, Eng land, also has some very interesting books with self-explanatory titles: Intro C.A.P. 21 for F.A.I. ducing Radio Control Model Aircraft, COMPETITIVE AIRFRAMES FOR THE PATTERN and Introducing Radio Control Model ENTHUSIASTS IS OUR BUSINESS. Boats. Each book is about 94 pages of Also We now offer a very scale-like C.A.P. 21, designed specif text, photographs, and illustrations ically for the new F.A.I. "Turnaround" pattern. Here are covering all aspects of introductory- TIPO 750 the design specs: level modeling. There’s a lot of good WING - 925 sq. in., 80 in, span. STAB - 239 sq. in., 29 in. span. Construction - Solid foam & balsa. FUSELAGE - "How to” information to be read in HIPPO TIPO Balsa/ply/foam, epoxy laminated. Epoxy cowl & wheel- these books. Write to Argus Books pants. Recommended engine - OS Gear Reduction. (No Limited for prices and information. FORMULA 750 'chainsaws' please!) Recommended finish - Monokote ★ ★ ★ (except wheelpants& cowl). Fly ing Weight - ± 9 lbs. Built by Although performance is the real design criteria, the model For those modelers considering entry doubles as an excellent Stand-Off 1/4-scale bird. into the world of homebuilt ultralight aircraft, or for those already into it who DICK HANSON MODELS Please write or call for prices and availability. would like to fill out their ultralight 5269 LUCKY CLOVER LANE knowledge, here are two books (num MURRAY, UTAH 84107 Phone: (801) 261 1402 bers three and four of a series) which will do the trick: Ultralight Flight and Ultra light Propulsion. Ultralight Flight covers everything from history, to aerodynamics, to 0^ JOHN POND handling, and performance of ultralight aircraft. Ultralight Propulsion covers all as Old Time Plan Service pects of ultralight engine design, main The largest selection of plans in the world at the most tenance, trouble-shooting, modifica reasonable prices. Each list $1.00 tions, and accessories. All 4 for $3.00 There is even a monthly tabloid style newspaper called the "Ultralight Times” No. 13 OLD TIMER F/F GAS which will keep you informed of news No. 13 OLD TIMER RUBBER/TOWLINE worthy items of a timely nature. No. 13 OLD TIMER FLYING SCALE A through K Write to Ultralight Publications, P.O. No. 13 OLD TIMER FLYING SCALE L through Z Box 234, Hummelstown, PA 17036, and ask for their brochure. · New plans prices effective Nov., 1982 - Nov., 1983 P. O. Box 3215 San Jose, Calif. 95156 R/C World .... Continued from page 13 Phone (408) 292-3382 Southern California at the time!) with rear driveshaft extension of a large gas sunshine and mild temperatures. Next engine, the generator, about an inch in show may have the least floor space of year’s show is scheduled for February 25 diameter and three inches long, was the major shows around the country, it and 26. Incidentally, Nick Ziroli, kit wired through two voltage regulators to certainly isn't the smallest in number of manufacturer and model designer was a dual, back-up battery system for the exhibitors or spectators. At no other the recipient of the annual Howard airborne radio. A digital voltmeter show will you find yourself coming to a McEntee Memorial Award. display gave visual proof of the genera complete involuntary standstill in the We’ll reserve our review of new tor’s ability to maintain constant peak spectator isles, literally packed in like roducts for the Toledo show report, battery voltage. vertical sardines. Cut one item really caught our attention, We’d like to congratulate Frank This year, over 100 exhibitors were which we’ll mention here. Don Harris, Devore and the rest of the WRAMS exposed to between 13,000 and 14,000 of Northern California, demonstrated a members on another great show. Next spectators in the two-day show at the neat little onboard generator, aimed month, we’ll report on the Toledo Show, Westchester County Center. The primarily at the gas powered, large scale the big one, and concentrate on new, or weather was ideal (a lot better than model. Mounted to, and driven off the improved, products. · . ... EASTERN U.S. FREEFLIGHT CHAMPIONSHIPS Fifth Place QALEVILLE ARMY FIELD-JUNE 25th and 26th 8 A.M. — 4:30 RM. BOTH DAYS VzA, A, B, C G A S - F A I POWER— Al, A-2 NORDIC HL GLIDER. P-30, COUPE— WAKEFIELD — MULVIHILL RUBBER .SCALE: PEANUT, RUBBER, P O W E R -EA R LY SUNDAY A.M. UNLIM ITED RUBBER JUNIOR, SENIOR, OPEN-OVER $2500 IN TROPHIES and MERCHANDISE
- „ „ . . „ Η hv 1Hp WRITE F0R FLYER WITH MAP and INSTRUCTIONS Eastern Freeflight Contest Director: Tom Kerr, 7824 Lexington Ave., Philadelphia, PA 19152 a m a — AAA Conference PR Director/CD: Joe Wagner, 12 Cook St., Rowayton, CT 06853 s a n c t i o n # 1 0 3
JUNE 1983 WHEN CONTACTING ADVERTISERS, TELL ’EM MODEL BUILDER SENT YOU! 97 FULL-SIZE PLANS SERVICE 98 o 13 FI 3.50 $3 R E G G A R D IN F 1832 No. 1.00 $1 P-43 LIC B U P E R 2831 No. o 13 ULTRA Mk V $ .75 $5 .00 $3 IV k M A R T L U 1331 No. P-60 K R A H S .T. -0 3 8 2 No. o 23CP COMET 3. 0 .0 $3 E N A L P O N O M T E M O C 283-C.P. No. ilchri G ill B radio. 3-channel r fo plane o 23 BUNKER BOAT $ .00 $6 T A O B R E K N U B 2832 No. $1.50 II K M $9.00 N O T LE P M E T 2 3 48 No. SPORT $9.00 IN L K N A R F 4831 No. RT SPO IN L K N A R F 4831 No. o 483- T BELLANCA $3.50 O G R A C A C N A L L E B .T. -0 3 8 4 No. o 3 3 $3.00 V 6 9 r A O D A R A 33 38 No. 0.. I O - $4.00 S-3 PO $4.00 RIM H S .T. -0 3 8 5 α Ν R E AS LE P 5831 α Ν 0.. BRI $4.00 I R IB L O C .T. $3.50 -0 3 8 3 α Ν $5.75 II S S TLA U C 3832 α Ν S U IC R T C LE E 3831 α Ν 82 C COME CLPPE $5.00 ER P LIP C ET M O C /C R 5832 α Ν o 63 PL $4.00 O T LA P 6831 No. building instructions were part of the article. the of if part were article, instructions construction thebuilding of reprint a Magazine include o 683- T CAS HAYSEED $6.95 D E E S Y A H C CLASS .T. -0 3 8 6 No. net nni lre cl, r- -ll W pre-W scale, large , g in n in w ontest C disk g in fly /C R 3-channel balsa, sheet ll A fun ship. Inve rted fin . B y B ruce Tharpe. ruce B y B . fin rted Inve ship. fun Johnson. t r A ol. C er. pow Quadra r. te h fig Hermes. Carl y B . now Contest and ship. then, Cabin r C Cl. inne w ance dlr. M . i-perform m H A 0 '6 rom F engines. .15-.25 r fo R /C .04 9 tra in e r or .1 0 pow ered aerobat ered pow 0 .1 or r e in tra 9 .04 /C R f o One ship. in cab rubber span ” 6 3 A G- ne" eis 2” sa. c Stanzel. ic V span. 24” series, " e in -L "G Bishop. ill B r e d n u fo By earliest. et's om C or erd drc die Mie Charles. ike M sailplane drive. ctric direct ele r o /C R geared 3-ch. r fo Cl. tandard S be pwee vrin te a ous fam the f o version ered pow ubber R rc pwe, LOA. ahk ith. m S & Lashek . A O L elec " 6 , 3 /C R r, er, le w pow tra tric fishing sea-going Scale ilchrist. G ill B radio. 3-channel r fo plane 37 M. N. 32" pn By oeh Kovel. Joseph y B span. " 2 3 ., .N .A M 7 '3 alln, or tr. y ary Jolly. rry La By otors. m 5 0 r fo sailplane, eln fi . sa. y o Houle. Tom By span. " 8 1 r. flie cellent i b classic scale 2-inch powered, lectric E i b scale 2-inch ered, pow lectric E be sae ai Aicr ser r July m fro r e is ru irc A cabin scale ubber R ild u B racer. one sport ie m k u fro A o /2 1 tw Inexpensive ft ra irc a /C R sport span ” 6 4 simple, ry e V wi fnned A gs ob b Lus Garami. Louis by b jo gas A d e n -fin in tw ex an Is ter. figh ing w w lo scale ubber Renger. R rry a L By ter. figh carrier Navy on r o. 97 A. Macl Abzug. alcolm M . .N odel .A m gas M cabin 1937 span Nov. “ /2 m -1 4 fro 4 ond. little ichm Sharp R Stu . R/C 5 .1 - scaled .09 lipper r C fo ered ", 4 pow 5 ilson. to W rubber Stan oldberg's G By er. pow electric 05 r fo rm Sp. 39 M. N. asnl wheeled, single a ., .N .A M 9 '3 Sept. From n titio e p m o c r ete o-m tw ered pow lectric E m-ul fyi n R/ ldr based glider, /C R ing w g in fly -built am o F All Full Size plans purchased from MODEL BUILDER BUILDER plans SizeMODEL purchased Full from All ED O MDL ULE PAS SERVICE PLANS BUILDER MODEL TO: SEND BO X 10335, C O S TA M ESA, C A L IF O R N IA 92627-0132 IA N R O IF L A C ESA, M TA S O C 10335, X BO R E D L I U B 0 L E D O M 1/4x4 h. ae rtin. a M James sht.
o 982- T ARROW $4. 0 .5 4 $ W O R R A .T. -0 2 8 9 No. o 92 SAND FLI 00 .0 4 $ I L F D N A S 9821 No. o 82 BOTHORNE $1. 0 .5 1 $ E N R O H T O B 8821 No. 0 .0 $4 R IE D A IG R B IC R T C E L E 22 98 No. o 82 T SO TE $ 8.95 $1 E IT H W SNOW .T. O 882 No. .50 $2 0 .0 2 $ N PAW E H T 24 98 No. E N H P A D 23 98 No. 0 .0 6 $ R E L U R NEW .T. -0 2 8 0 1 No. o 183 OS ALBATROSS S2.00 S S O R T A B L A GOSS. 12823 No. o 181 ER GREAT T 0 A .0 E 5 $ R G R IE R K 10821 No. " 4 2 " D IL H C IR A F 1182-CP 0 .50 .5 No. 2 $2 S L E D O M K IC T S P AM H C T 1182-O No. -3 R C A ESSN C 11821 No. 0 .0 5 $ SPTSTR E IR A L L A D .T. 1282-O No. o 182 FFI $4. 0 .0 4 $ I V IN F IF R G 12822 No. .50 $3 E L K IC S 1833 No. o 181 FFI II $ .75 $3 I II IN F IF R G 12821 No. o 183- T THERMALEER $ .00 $6 R E E L A M .00 R $3 E H T .T. -0 3 8 1 No. T F A R C R O L Y A T 183-C.P. No. ales ube si f Botn bn or abin C oston B r fo ship bber ru ibson. G ill B Tailless setter. . s n tio c record tru s in and d r ile inne eta w D Nats ylon. P 0 '4 A Cl. un a 0 eecrc C. t Poling. h itc M . re /C R design it ctric k ele 05 erkeley B as -II W W turns post arly E ner Pas r t r i nal odel. m l a in rig Beauty o span m fro ct ft ire d 8 Plans ed r. fam inne w Raspante's ainfan. Joe B.W rules. ing W g in ly F rne tho aw H ith. m n S co Paul y B lf-A a H achine. m ing w bat com foam line l tro ontest-proven, C odel m scale rubber span " 0 2 little Sharp incl. rticle a onstr. C . .T A 0 '4 y a ril/M p A nie Une 2 ls B L r Scott. S rry La By lbs. 20 nder U engine. a ai homebuit B Pry Peterson. Perry By ilt. u b e m o h cabin a f o Banka. Bob By t-like a o b g biplane. in fly sport ered /C R pow .049 2-ch. ilt, u m b fro Easy gassies, truck S ank H best f o One rubber span " 8 2 version. Ranger Classic n w o n k little of scale rubber n titio e p m o C Johnson. Ken plane. ered an-pow m , ric to he-nh cl a is et For uadra Q r o F best. its at scale Three-inch cl,fom c iman t Two sheets. o w T it. k n a hitm W Ace m fro scale, his f o odel m span " 4 3 Nokes. ered, pow on R ubber By R r. e -tim ld o -fl. 9 popular ni ulhue C sor aicr t only n o Cannon. ft, ill 8 ra irc By a er. rt pow spo 6 .0 /C R span, 36-inch full-house i in M y 40 su Ai ris b Al Casano. l A the by m fro Trails, ir ship A f o issue rubber C 0 Class '4 ay span M " 8 3 an. A Finem rk a M ber em m . .C .A F by racer, of version /C R span) 181-1/2" educed R ni ulhos R/ pr aicr t only n o ft, ra irc a sport /C R ouse full-h i in M u f or d scin See Fauble. Steve section. rd a rw fo m a fo cut 8ic sa, 0 o r B Bil Cannon. ill B By er. pow .03 span, 28-inch " 0 3 r bulkheads. fo and plans s rib it k Shows ft ra scale. irc A odel rubber M l apito C isngl t wig By Dn Veronica. Dan y B ing. w e p ty gull tinson S Co a wepn Cre wig with w ing, w Curved eapon. w bat om C I A F iulsra ie l C a sae, " 6 7 soarer, gas C Cl. line stream l tifu u a e B
LAKES Add 5% to credit card orders.card credit 5%to Add or U.S. funds on Overseas orders. Postage paid for accepted. for PostageVISA Master Overseas orders. FPO paid or Card orders. on and APO funds U.S. or nld cr nme, xiain ae ad signature. and date, expiration number, card Include Order Money International by Remit order. total of 50% add Canada Mexico), (includes and seas Airmail First Class in U.S., add 25% of total order. For Over For or order. total Airmail 25%of For add U.S., Class Class mail. in First 4th or 3rd includes Price FORNI DENTS ADD 6 ES TAX A T S LE A S 6% D D A S T N E ID S E R IA N R O IF L A C E ODRN INSTRUCTIONS ORDERING NEW 95 .9 6 1 $
. 82 MSERSCHMI 3 S2.00 33 M T IT M H C S R MESSE 22 28 o. N o 52 BUCKER J $15.75 N A M G N JU R E K C U B 5821 No. . 81 NG $3.50 G IN L K C U D 6821 o. N o 4823 SCHNI R $2.50 $1.50 IR A D IE N H C S 3 2 8 4 No. " R E N O L Y "P X X IR A 2 2 8 4 No. . S4.00 R E D N E C S A 2 2 8 6 o. N $3.50 R E N IN W T T E F F O M .T. -0 2 8 7 No. o 22 ACRO SP ST $6.00 0 4 R TE TS R PO S O R C A 2821 No. $6.00 3821 No. K R A H S R E IG T .T. -0 2 8 4 No. S7.50 A G E V D E E H K C LO 4821 No. $3.00 A IT N A M A L A T S Y R C 22 58 o. N o 382- T TWI US R $3.50 ER SH PU IN W T .T. -0 2 8 3 No. $3.00 R E N IN W T S TE N O C .T. -0 2 8 5 No. .50 $4 D L A R E H E TH .T. -0 2 8 6 No. o 72CP J3 U $ .00 $2 CUB J-3 782-C.P. No. o 7 TEHEAD N 2 $4.00 .00 $5 21 . NO D A E H E IT H W 2 2 78 No. H C R A N O M 7821 No. o 3 3 CANARY $ .00 $2 Y R A N A C T O H T U N A E P 23 38 No. eisae "bat ub" sye CO C style, " b tu th a b " Semi-scale, d p t re lght B Jc Headley. Jack By t. h flig free rt spo ed ai dagr . o rd Ptr Neuer. Peter it, ckp o c ered. pow open 0 r, .4 inge w w dragger, lo il rn ta tte a rt/p o p S Comyns. k n ra F sheets. 3 . e ip b ra E Classic rac up C chneider S l a ic p ty f o osite p om C of ubber) R r o o Ind e u tiq n A ” 0 (2 X X IR A geared r fo odel m quarter-scale tic a b ro e A tne G-i . pn Haol Lanser. ld aro H span. " 1 6 r. e -lin G Stanzel ln or sa rbe sae odel. m scale rubber span " 5 2 r fo plan f t C sae dl p pular po f o odel m scale /C R rth u -fo e n O O C r fo er. Musciano. alt W span. " 0 5 Vega, 's rn tte a M l he wood R/ l ng b t or ni in m r fo at bo g in fly /C R d o o w sheet ll A Corp. ft ra irc A Piper 1942 l ia ffic o n A dl r af Bule. lh u er. m Kum alph R uilder. B ft ra irc A odel M Johnson. Ken y B odel. m gas . .T O l a ic p ty ie m Jim f o odel m scale /C R truck. S " /4 enry -1 H 1 Trails. xact E ir A 8 '3 m fro ship Parker. e n ro y T y B levels. ill k s all r fo /L C Pond. Gene y B uadra. Q r o t, c ire d 1.2 90, can r to c tra geared, e trik , g in fly th oo m S ase r y 91 Gn Chaille. Gene . T A 1941 ay M m fro gassie ado n . 049 egn. e Wil rd. illa W Ken engine. 9 4 .0 2 .0 and dio ra l tifu u a e b lly a n tio c n fu ost m r's elde N y o R cr etng ubr hpfom Ag ' 6 '3 Aug. m fro ship rubber g settin ecord R rubber fuselage d n o m ia d g in b lim c High sport A /2 1 ood balsaw and bass sheet ll A ff. u R kip S .15-.25. wings, m a fo Ace ard. nagd R/ eso of otli ct r to ic V nostalgic f o version /C R Enlarged, osbe r- ih Bo, l i rubber in r e fly Bros, right pre-W Possible dbom, wi udrd Cas on lo y p B Class ruddered. in tw , oom od/b P 1940 w inne r, fro m N ov. 1940 A ir Trails. ir A 1940 ov. N m fro r, inne w 1940 t ueae fn/udder By l Young. ill B glider y B ing w r. e g d d in /ru fly fin ept, sw fuselage, span ith ft. w 6 /C R F, pn I fis By e Johnson. Ken y B flies! It span. ” 0 4 , /F F Sharp staggerwing biplane racer, big fo r a r fo big racer, biplane staggerwing Sharp ent es ue. Bo weitzer. Sw ob B y B rules. eets m t u b Peanut GREAT LAKES 2 rbe. yWat inberg. W alt W By rubber. r o ni re, 00 .0 5 $ order, m u im in M MODELBUILDER T1 $ 7.95 $1 2T-1E 2 o er pow
No. 282-0.T. VIR G IN IA CHAMP S5.00 No. 10812 NAVY PT BOAT $3.00 No. 7812 BIG PROP CHARTS $1.50 Little-known, but sharp Class C pylon, Built on Dynamic's 1/2" scale, 39" fiber Charts for determining best engine and April '40 F.A., 60" span. By Bob Little. glass hull. Gas or electric. By Art Bauer. prop sizes for the "biggies". John Burns.
No. 1821 Model Builder RAVEN $5.75 No. 10813 BUTTERFLY ONE $1.00 No. 7813 GREAT EXPECTATIONS $1.50 Latest in a long line of tailless R/C sail This little rubber powered ornithopter West Coast/Mooney Bostonian design for planes, span 110", 2-ch. By Dave Jones. looks like a big butterfly. Ken Johnson. beginner or expert. By Ernie Wrisley.
No. 182-C.P. SUPER G SHARK $a 00 No. 1081-C.P. N. AMERICAN B-25 $4,00 No. 781-0.T. BERRYLOID WINNER $5.00 An historic two-line controlled model of Miniature Aircraft Corp. 1/2"-scale kit Winner of the coveted best finish trophy classic lines; one of many by Vic Stanzel. plans. All printwood parts duplicated. at the 1938 Nationals. Harold Coovert.
No. 182-0.T. HI-HO $3.50 No. 1081-O.T. OLD SQUARE SIDES $4.50 No. 6811 CURTISS P-40 $10.00 A 1940 convertible stick/Wakef ield; uses Very realistic sport cabin from July '40 Exact-outline giant/sport R/C scale for demountable cabin/pod. By Ed Lidgard. Air Trails. Nice for R/C. John Sprague. .90 power, 80" span. By A rt Johnson. Ν α 12811 XINGU $4.00 No. 9811 SCALE EDO FLOATS $3.50 High performance F38 type sailplane of Designed for Sig Cub, these floats fit any No. 6812 LETTERS & NUMBERS $1.50 contemporary construction. Ken Stuhr. two-inch scale model. By George Wilson. Letters/numbers in round/square block, plus proportional guide to make any size. Να 12812 A.J. INTERCEPTOR $1.00 No. 9812 STINSON VOYAGER $2.50 Replica of the famous Jim Walker folding One-inch scale rubber model of classic Ν α 681-0.T. ROCKETEER $4.50 wing catapult glider. By Dave Thornburg. design. Span 34". A.P. 'Speed' Wilson. High-climbing Class C gassie from Nov. '38 Air Trails. By Maurice Schoenbrun. No. 12813 SUNDAY FLYER $2.50 No. 981-O.T. BOOMER BUS $4.00 Easy beginner's 1/2A sport F/F. One-day Another Henry Struck classic, from Feb. No. 5811 BLANÍK L-13& L-13J $9.50 assembly. Ace foam wings. Ken Willard. 1941 Air Trails. For .19 to .29 ignition. Czech 2-place sailplane in 1/5 R/C scala Optional power. Span 126". L. Houha. No. 1281-O.T. FOLLY II $4.00 No. 8811 MINI BIRD $4.00 Beautiful aerodynamic lines on this 6-ft. Two-meter version of Dave Thornburg's No. 5812 C 02 BANSHEE $1.50 gas job. Pic in July '37 MAN. Rod Doyle. well known Bird of Tima Mark Smith. A 40% reduction of Leon Shulman'sCI. A post-war gassie, for CO2. By Ed Toner. No. 11811 WACO TAPERWING $17.95 No. 881-C.P. SEVERSKY P-35 $4.00 Sensational 1/4-scale R/C model of Bob Miniature Aircraft Corp. 3/4"-scale kit No. 581-O.T. MY SPARKY $2.00 Lyjack's Waco. 2.5-3.5 eng. Larry Scott. plans. All printwood parts duplicated. Original design of longest running kit by Comet. Many building hints. Ed Lidgard. No. 1181-0.T. HALF-PINT $2.50 No. 881-O.T. TAIBI'S HORNET $7.50 Tiny (24-3/4" span) pylon free flight gas No. 4811 NORTH STAR S4.00 Sal Taibi's 1940 design for Forster 99 en Military scale-like R/C twin for .15 size model for Atom or .020. Louis Garami. gine. Span 88", chord 16". 1300 sq. in. engines. All wood. By Kalevi Sundquist.
No. 10811 HEATH PARASOL $7.50 No. 7811 SPINE-TAILED SWIFT $3.50 No. 481-C.P. STINSON 105 $3.00 Lightweight quarter-scale for .60 power. Contemporary 1/2A pylon racer designed Competition quality 50-inch rubber scale Span 94", two-piece wing. Bob Kitson. to win. Easy glass fusa Jim Gilgenbach. kit plans by Megow. All parts detailed.
'ELECTRIC POWER RADIO CONTROL HELICOPTER By Ishimasa. Japan
THE WORLD S FIRST PRODUCTION ELECTRIC R/C HELICOPTER1 ■ ir Now you can enpy the lascmalion and challenge ot R/C helicoptering in your own backyard! This whisper-quiel all-electric makes no mess and costs |ust pennies to lly Semi-assembled tor minimum construction time includes SPECS: 39" Rotor. 33" 0/A 2 powerful 05 motors. H-0 speed controller, pitch Weight: 2.5 lb tethered. 3.5 lb. w/Airborne pack wrenches and 22 It electric tether cord Motors: RS 540 S X 2 Hook the tether cord to your 12V car battery lor about t hr Radio: 4 Channel ot trimming and training before recharge When you're Power: Tethered 12V 40AH car battery ready strap on the optional airborne powerpack and Free 8 cell (9.6V) NI-CAD pack electric-tan it into the sky1 9 RETAIL CONDOR EH-t semi-assm kit 249 95 189 00 Airborne mead powerpack 45 00 36 00 115VAC overnight charger 17 95 14 35 I2VDC 15-mm quick-charger 69 95 49.95 Optional Beii-Hiller Assy 45.00 36 00 HANDLING CHARGES: Prepaid Orders $2.50 COD Orders / $4-75 Credit Cards f il 11 ii ujmi» /ssfcJ4.75
Shop By MaH. Phone or Visit wá CONDOR HOBBIES Showroom at __ 17835 Sky Park Circle · Sle. E · Irvine. CA 92714 ■Phone 714/556-1888 · TELEX 68-1490 · EXTRONIC IRIN
JUNE 1983 99 INDEX TO ADVERTISERS
Ace R/C, Inc...... 71 Indoor Model Supply ...... 94 Francis Smith's Ship Y ard ...... 74 Astro Flight...... 64 J-5 Manufacturing...... 76 Southern Sailplanes...... 66 Bavaran Precision Products ...... 68 K&B Manufacturing...... 89 SR Batteries...... 84 Beehive R/C Model Aircraft Co...... 96 K&S Engineering...... 83 Sullivan P rod ucts...... 79 Dave Brown P rod ucts...... 77 Kraft Systems...... Cover 3 Tatone Products...... 85 Byron Originals ...... Cover 2 Kustom Kraftsmanship...... 70 Taylor-Craft ...... 80 Bud Caddell Plans ...... 94 Lehmberg Enterprises ...... 91 Top Flite ...... 67 Campbell's Custom K its ...... 84 McDaniel R/C Service...... 90 Tide Mfg. Co...... 65 C.J.M. Plans ...... 90 Midway Model...... 88 Uber S k iv e r...... 103 Cannon R/C S yste m s...... 75 Midwest Model Supply...... 88 VL Products...... 95 Condor H obbies...... 99 Model Rectifier Corp. (MRC) .. Cover 4 Buzz W a ltz ...... 80 Coverite ...... 91 Walt Mooney Peanuts...... 96 Westburg Plans ...... 87 Jim Crocket Replicas ...... 83 Sid Morgan ...... 88 Williams Bros...... 76 Du-Bro Products ...... 69 Novak Electronics...... 81 W ilshire Model C e n te r...... 86 Electronic Model Systems...... 95 Octura Models ...... 78 Nick Ziroli ...... 72 F.A.I. Model S u p p ly...... 81 Peck Polymers...... 86&92 FMS Hobbies...... 73 John Pond O.T. Plans...... 97 Fox Manufacturing Co...... 93 Proctor Enterprises...... 68 HOUSE ADS Futuba ...... 3 Rhinebeck Classics Fly-In...... 104 Binders ...... 102 Great Lakes Model and Mold Co...... 70 Scan Am...... 85 Classic Old Timer Plans...... 101 Dick Hanson M od els...... 97 Satellite City ...... 1 Full Size Plans...... 98 Hobby H o rn ...... 92 Sig Mfg. Co. Inc...... 4,5 The Modeler's C h o ice ...... 89
ORIGINAL COMET 78-inch Sailplane kit, CLASSIFIED ADS bought 1948, never built. Price $60 delivered. Send stamped, self-addressed envelope (no Non-commercial (personal items) rate is 25 cents per word, with a minimum of $3.00. money) to: George Wise, 815 Lakewood D r. Commercial rate is 40 cents per word, w ith a minimum of $5.00. No advertising agency La Grange, GA 30240. discounts allowed. A ll ads are payable with order, and may be for any consecutive insertion period specified. Name and address free, phone number counts as two words. Send ad and payment to· SCALE SAILPLANES kits, plans, documen MODEL BUILDER, Classified Ads, Box 10335, Costa Mesa, CA 92627. tation and supplies Send $2 for illustrated catalogue Archaeopteryx Avion Associates Box 120 Pottstown. PA 19464
RAS-STICK 19· 40 Fun Flyer, 51" foam wing MODEL AIRPLANES and the AMERICAN WANTED - OLD MODEL IGNITION EN balsa fuselage Complete kits. $49.95. Send BOY: Magazine size book (160 pages) of GINES Paying top dollar Don Chapton, 1252 money order, we pay UPS Send stamp for 1927-34 era "An important segment of Bennington Santa Ana CA. (714) 838-5469 picture sheet Dealer inquiries invited GT American History." Photos. Over 40 Plans. MODELS. PO Box 869. Rantoul. IL 61866. Ten day refund $9 50 postpaid MODEL phone (217) 893-4136 AERO PUBN , Box 135, Northridge, CA JIM WALKER'S INTERCEPTOR, Sky-Diver, 91328 and Ceiling Walker Helicopter, limited repro duction. Fireball plans, all factory versions. TISSUE PAPER (Domestic) 20'x30" sheets, For information, send $2 and large SASE sixteen colors. 20Φ sheet S A S E brings (37-cent stamp). A-J Fun-Pak. P.O. Box 548, sample of all colors. Contact Bill Wilson, Box THREE NEW AIRCRAFT COLORING Oregon City, OR 97045. 8489. Lumberlon. TX 77711. (713) 246-4177 BOOKS. "Antique Airplanes", "Airplanes of World War One", "Airplanes of Second World War" Each book 48. 8-1/4x11 pages, and UNIQUE CARD MODELS. Popular in Europe FORSTER IGNITION ENGINES. English & contains over 40 authentic illustrations with for centuries Tools needed: scissors or an Chinese diesels: Parts and Supplies Send descriptions of each craft's history and X-acto knife, a dull knife for folding, and white SASE to M&G ENGINES. P O Box 6026. original coloring scheme. Price, only $4.98 craft type glue Get the ' Spirit of St. Louis," a Denver. CO 80206 each. Special, all three books $13.50. All catalog and price list for $5.50 postpaid Send postpaid, guaranteed. Craft-Mark Products. cash, check, or money order to: The Perky Box 399, Dept MB1, Syosset. NY 11791 Corp., P.O. Box 214A. Pomfret Center. CT WANTED — OLD MODEL ignition engines, 06259 cars, etc Paying top dollar Bill Simpson 7413 Via Lorado Rancho Palos Verdes. CA 90274 (213) 377-3532 OLD TIMER MODELS — Everything for the BUILD A 1 /3-SCALE WW-I FIGHTER for your rubber modeler Pirrelli, balsa, tissue, absolite children to play in. Fokker triplane or SE5 film Over 300 plans. Too much to list Send $1 biplane plans $9.50. Russell Patterson. 2955 WANTED Spark ignition model airplane for catalog to: Old Timer Models, P O. Box South 3145 West. Salt Lake City. UT 84119 . motors parts race cars. Circa 1930-1950 913. Westminster. CA 92683 Russell Stokes Rt 1 Box 520 Keller TX 76248 ROTARY ENGINED AND WW-I FIGHTERS. CUSTOM MACHINE WORKS: Sketch with Factory or best-source drawing enlarge WANTED - OLD MODEL AIRPLANE EN SASE for quote. Retracts, adapters, mounts, ments. Experienced scratch builders only. GINES, spark ignition, glow, and diesel Any etc. Roy B. Stewart. 514 Zimmerman Dr . 72-inch span $26. 80-inch span $36. Photo related items Doug Beardsworth. Apt 228-D, Princeton, IN 47670 packs 500 aircraft Catalog $3. Scale Plans Oakville Ave, Waterbury, CT 06708; (203) and Photo Service. 3209 Madison Ave.. 756-3450 Greensboro, NC 27403. FOR SALE: IGNITION ENGINES One Morton RAZOR BLADES, single edge industrial first M-5 (1948). two Bunch Mighty Midgets "MOLDMAKING FOR THE MODELER. quality — extra sharp. 100/S4 25.200/S8.00. (1940), one Anderson Spitfire (1950). All are CRAFTSMAN. HOBBIEST " How to booklet 300/$ 11 75. 500/$ 19 25, 1000/$37 50, complete and in excellent condition. In group with instructions and illustrations. Send $4 50 postpaid in U S Cobble's Gifts, Postbox 2. only, $2600 R.B McKenna. 1620 Artesia to Placer Publications. PO Box 7252-A, Deal. NJ 07223; (201) 531 -6842 Blvd., Redondo Beach, CA 90278. Orlando, FL 32854.
100 MODEL BUILDER ...... OF OUR MOST POPULAR...... i CLASSIC OLD TIMER PLANS i • ••••••••••••••••••••••••••••••«••v „ ______No. 575-O.T. MERCURY S5.00 SEE PAGE 98 FOR ORDERING INSTRUCTIONS Designed by Ben Shereshaw. kitted by COMPLETE M B PLANS LIST SENT WITH EACH ORDER. Scientific. 72" span. By Phil Bernhardt.
No. 118CVO.T. FOKKER D-VIII S4.50 No. 977 O.T. "G U FF" $4.00 No. 475 O.T. G.H.Q. SPORTSTER $5.00 Very stablét F/F flying scale ship fo r .23 Walt Good's 1938 Class 'C' gas winner, From July 1936 M A N , also kitied by ignition engines, 57" span. By Earl Stahl. from '40 AT Span 72” . Al Patterson. G.H Q. By Louis Loutrel. P h il BernhartJi.
No. 980-O.T. DOLPHIN $10.00 No. 877 O.T. PB 2 $7.00 No. 175-0.T. FLYING QUAKER $5.00 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 Petr ides. M A N Spans 8 feet. By Thracy Petrides. Span 7 ft. Redrawn by Phil Bernhardt. No. 880-0.T. HAYSEED $4.00 No. 777 O.T. NEW YORKER IV S3.00 No. 1274 O.T. THERM'L THUMBER S4.00 Hot A/B pylon (no-window cabin) never Frank Zaic's 1938 Stout Trophy winner, Hot Class A or B pylon lype gas model beforepublished, 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 4'A‘. 1941 M.A.N., 36" span. By Henry Cole Trails. 68" span. M. Schoenbrun design. Still good in Unlim. By Phil Bernhardt. No. 380-O.T. FLAMINGO $6.00 No. 477 O.T. CLOUD CHASER $150 No. 91074-O.T. BUHL PUP S6.00 Rare old-timer appeared in 1938 JASCO This 30" 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. 377-0.T. GAS CHAMP $5.00 No. 874 O.T. POWERHOUSE $5.00 Sort of a ‘squared o ff' Zipper, from 7/40 The famous 1940 "Eastern States Champ" Taibi's famous design for Forster 99 ign Flying Aces. 72" span. By Jerry Peeples. by Russell Simmons, span 76" Al Patterson. Great for R/C O. T. By Phil Bernhardt.
No. 180-O.T. SUPER CLODHOPPER $3.00 No. 1276 O.T. RAMBLER S4.00 No. 674 O.T RED ZEPHYR S5.00 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 TIN Y $4.00 No. 1076 OT CALIFORNIA CHAMP $3.00 No. 574 O.T. The T O COUPE S5.00 Well known and sharp little 1938 gassie 1940 Wakefield with retract wheel, twin Classic high wing 1936 'C cabin gas job Span 64" Redrawn by Phil Bernhardt for .19-.23 ignition, 46". Barney Snyder. rudders, anhedral stab. Tom Engleman 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 lew wing model, kitted by Scientific. By MB staff. MAN. Radial cowl. 5' span Joe Weathers. gas model Redrawn by Phil Bernhardt No. 979-O.T. LANZO '37 STICK $8.50 No. 876 O.T. RECORD HOUND $5.00 No. 274 OT PACER "C " S4.00 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-O.T. SCRAM $5.00 No. 174 OT EHLING '37 GAS JOB S5.00 Easily-built Class B gassie with 50" span Clean Class C cabin job from July 1938 Frank Ehling's 8 ft span 1937 gas model from May '41 Air Trails. H.A. Thomas. Flying Aces. Span 83". Heit/Patterson. Still winning' 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 mo An .020 Replica of popular Goldberg de sign kitted by Miniature Aircraft Corp. del New Ruler, by designer Hank Struck sign, kitted by Comet By Wayne Cam
No. 379-O.T. PRIVATEER $6.00 No 276 O.T. LONG C ABIN " $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., 87" span. By Thracy Petrides. Ihe 1937 era Span 78 ' Phil Bernhardt cabin era Redrawn by Phil Bernhardt. No. 878 O.T. .020 RECORD HOUND $2.50 No. 176 O.T. KORDA WAKEFIELD $2.50 No. 973 OT SPOOK 48 S4.00 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, 8y Snyder & Muir.
No. 778 O.T. CURTISS ROBIN $6.00 No. 1175 O.T. FOO 2 U 2 $3.00 No 773 OT LANZO 8' GAS MODEL $6.00 A 1937 Sport Scale ship! From Comet A pre Zippei design by Dick Ob.uski. re Chet Lanzo's f»nous "Record Breaker " kit, 72" span. Designed by Joe Konefes. duced to .020 Replica, by Ron Sh>irpton 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. 1277-0.T. HURRICANE $2.50 No. 775-O.T. BOMBSHELL $4.00 No 573 OT 1 AERBO 020 S3.00 Earl Stahl's 33" span 1940 rubber pow- Famous winner of Class C gas at the '40 Repina of 1941 Class A Nats winner ered low winger Northrop & Patterson.______Nats, by Joe Konefes. Phil Bernhardt Span 30 Redesigned by Pbil Bernhardt
JUNE 1983 101 too nice. Workbench .... Continued from page 6 THINGS TO DO Mr. Patterson is tuned in, please contact Hosted by the Barons Model Club of COVERUP! Walt at 2912 Camarillo Mesa Dr., San Spokane, the Spokane Scale Internats is Sturdy, high quality, rich dark Diego, CA 92123. scheduled for June 10,11, and 12, 1983, green vinyl-covered binders for STEAMROLLED and you’ll never guess where. Events will your valued copies of MODEL From time to time, modelers ask for include Expert, Sportsman, Team Scale, BUILDER Magazine. Gold let rolled prints when ordering plans. While and Giant Scale. Fees are $17 per event, on the surface it may not seem ail that with an additional $3 for Scale Masters tering on spine and fro nt cover. difficult to offer a choice of rolled or finals. Pre-registration is required by folded prints, take a look at the facts. June 1, or pay an additional $5. For more When the paper on which a plan has info, call C.D. Joe Fox (509/456-0500) or been printed comes out of the copy Assistant C.D. Bruce Nelson (509/ machine, the paper is limp, almost like 484-5631). For information and registra cloth. It can easily be rolled into a tube tion requests, write to Marcie Nelson, E or folded. Once the paper dries out, 807 Vicksburg, Spokane, WA 99208. however, it becomes stiff and takes a set. ★ ★ ★ Everyone has experienced the exaspera The Fourth Annual Keystone R/C tion of trying to unroll a plan in order to Club Electric Fly will take place on examine it. The stubborn thing will roll August 20 and 21, 1983, in Hatfield, back up, taking everything with it but a Pennsylvania. This event is intended to heavy book placed at each corner! promote electric flying. It’s a fun-fly Folded prints, on the other hand, have where all electric R/C models are wel annoying creases when opened up, are come, including: scale,sport, aerobatics, sometimes difficult to fold back into the old timer, powered glider... you name ------1 original shape (like road maps), and it! In addition, the KRC offers an Elec when building over the plans, the tric Fly Clinic during the fun-fly, includ creased paper tries to push the wood ing: seminars, static displays, product One Binder ...... $5.95 away from the construction surface. information, flight demonstrations, Three Binders . . . $15.95 When studying a plan and/or “ men parts and supplies, and personalized Five Binders .... $25.95 tally building” a model, a folded print is technical assistance. For further in the handiest. When actually assembling formation, contact John Hickey, 1624 (For more than 5, include a model structure over a plan, a rolled Maple Ave., Hatfield, PA 19440. $5.00 for each additional print is handiest. ★ ★ ★ binder.) From the marketing point of view, For eastern freeflighters who want to Shipping: Binders shipped in U S. folded plans have it all over rolled plans. tune up for the first East Coast Nats in 14 Imagine storing approximately 2000 by UPS only. For one binder, add years, the Eastern Freeflight Conference rolled plans (wetry to stock three or four and Minneapolis Honeywell isco-spon- 52 00. For each additional binder; copies of every one of our more than 500 soring the Eastern U.S. Freeflight Cham add 75c. For binders shipped out model plans). Not only that, we would pionships (triple-A sanction) at Galeville side U.S.. add S3.50 for one bind have to keep hundreds of mailing tubes Army Field, above West Point, New er. For each additional binder, add in stock . . . in various lengths to suit York, on June 24 and 25, 1983. S i.50. For A ir Mail rates overseas, various plan sizes. On the other hand, Classes to be flown include 1/2A, A, B, 2000 folded prints can be cataloged and please inquire. C, and FAI Gas; A/1 and A/2 Nordic; stored in three normal size file cabinets H/L Glider; P-30, Coupe, Wakefield, PLEASE All payments must be in U.S. . . . and regardless of plan size, they are funds, drawn on a U.S. bank. and M ulvihill rubber; and Peanut, all folded to the same dimension . . . 8V2 rubber, and power scale. AMA rules. California residents add 6% Sales Tax X 11 to fit in 9 X 12 envelopes. Category 2, three-minute max. If the plan buyer has only a few prints Trophies and merchandise awards will MODELS on hand, it shouldn't be too difficult to total over $2500, with most events being store them in the corner of a closet. trophied through fifth place. BUILDER However, if you’re storing quite a few For further information, contact Box 10335 plans for those models you’re going to Overall C.D. Tom Kerr, 7484 Lexington Costa Mesa, California 92627-0132 build “ some rainy day” , folded is the Ave., Philadelphia, PA 19152, (215) only way to go. 331-4890, or C.D. Joe Wagner, 12 Cook When it comes time to build, or if a St., Rowayton, CT 06853, (203) 866-2426 collector really insists on rolled draw home, or (203) 853-7654 (office. ings, the folded plan buyer can “ have his T W O BITS cake, and eat it too.” If the household While we’re talking freeflight, a new doesn’t happen to possess a steam iron, OT rubber event is being offered by the now is the time to buy a nice “ gift” for Southern California Ignition Fliers the chief troner in the family! Lay the (SCIF), and it seems worth describing. unfolded plan on the ironing board and 1. To provide the beginning modeler, make sure the iron is ready to make or new OT recruit, with a simple, but steam. Press the steam trigger and give competitive, event as an inexpensive one of the creases a healthy shot, and interesting introduction into the followed by direct application of the spirit and practice of Old Timer model iron. Pretty soon you’ll have a smooth ing fun. drawing which can be rolled into a tube 2. To provide the experienced OT . . . Steam Rolled .. get it? flyer with a simple, but challenging, fun By the way, store your prints in a dark event that will not interfere with the area (another point in favor of folding pursuit of regular OT events. " I don't know whether· to enter and enclosing in an envelope). Long DESIGN RULES: exposure to normal light will turn the 1. For published or kitted OT rubber the RM program or not. ) already exposed area of a print yellowish- models with a maximum (projected) have a. career." brown. It's still usable, but doesn’t look wingspan not exceeding 25 inches.
102 MODEL BUILDER IN THE BEST CIRCLES, IT’S ttber skiver
A PRECISION INSTRUMENT FOR THE DISCRIMINATING MODELER
NEW PRICES AS OF APRIL 1. 1983 Safe, Rear Draw-Bar Clutch Available in seven satin anodized handle colors: Precision, Instrument-Quality Materials silver, blue, red, green, gold, black, & violet. Strong-Holding Advanced Collet Design Complete set in fitted hardwood case, includes uber Skiver, together with two vials containing Non-Rolling Hex Cross-Section four No. 11, and one each of Nos. 10, 12, 15, Deeply Knurled, Non-Slip Grip and 2 0 ...... S16.50 Long-Life, Stainless, Individual handles (specify color) $6.95 Vial of 6 blades (No. 10, 11, or 15) $3.00 Surgical Steel Blades (No. 12 or 20) $4.00 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 RHINEBECK CLASSICS FLY-IN WORLD FAMOUS OLD RHINEBECK AERODROME Rhinebeck, N.Y.
A SCALE, SPORT SCALE, & GIANT SCALE FLY-IN June 25 & 26,1983 FOR ALL ERAS
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For more information contact: I Vance Sutton 21 Greenvale Farms Poughkeepsie, NY 12603 914/452-0985 Rhinebeck Craft Ft Same Weekend
SPONSORED BY MID-HUDSON R/C SOCIETY
2. Original design must show a land future. WHO OWNS WHAT ing gear. NEW BOOKS If it doesn’t have wings, and won’t fly 3. Any type of design is permitted Paul Matt's Historical Aviation Album without needing motive power, our which meets Rules 1 and 2 above: (i.e., offers two new items, the Ninth Air assistant editor and R/C Soaring colum “ Commercials” , Scales, ROGs, Indoor/ Force Story ($7.95) and Cobra in the nist, Bill Forrey, may not know its origin. Outdoor types, etc.). Clouds ($6.50). In writing about the new chrome plated 4. Propellers: Original prop design Ken Rust has written the new, revised, wheels for off-road R/C cars by Kraft must be used. If no prop plan is pro and condensed story of the Ninth, Systems (in the March 1983 “ Over the vided, a classic OT design must be used taking it from its first combat action in Counter” ), Bill said, "Kraft Systems is (i.e., diameter not exceeding 36 percent the North African desert, to Sicily and spinning circles around its Rough Rider of wingspan, and layout to “ X” blank, or Italy, and to England, for the D-Day and Sand Scorcher R/C cars . . . etc.” basic “ 4-quarters’’ blank). "M odern” invasion and joining with the 8th Air Our apologies to MRC for inadvertently rops (i.e., plastic, molded, foam, dowel Force for the final European operations. "transferring ownership” of these excit ubs, etc.) are not permitted. Folding The 39th Fighter Squadron, attached ing R/C vehicles by Tamiya of Japan, props are not permitted, but freewheel to the 35th Fighter Group, was one of the which are marketed in the U.S. by MRC. ing is OK. DTs are permitted. first to see combat in the Southwest LIMITED EDITION PRINTS FLYING RULES: Pacific in '42, and got its "C obra’’ As mentioned in a late 1982 issue, 1. Model must ROG. Official flight: nickname because its first aircraft were limited edition, full size (22 x 28 inches) 20-sec's minimum, 2-min. maximum! P-400 (P-39) Airacobras. John Stanaway litho prints of Bob Benjamin's painting 2. Unlimited attempts to make 3 Offi wrote Cobra in the Clouds, covering its for our October 1982 cover (Harold cials. A second, and third model may be history from 1942 and WW-II, through K rier’s Great Lakes Special) w ill be used for lost (but not broken) model(s) Korea and beyond. Based mainly on available by the time this information to complete Officials. pilot reports, it describes the 39th reaches the newsstands. Only 500 prints 3. All fly-offs to break ties are 2-min. operations with P-39s, then the P-38, will be made, each numbered and maximums. followed by the P-47, and finally the signed by the artist. These large, full- Incidentally, while chatting with P-51, which it continued to use when color reproductions, when suitably Henry Struck at the 1983 WRAM show in called back to Korea, until the jet age mounted and/or framed, will make an White Plains, New York a few weeks ago, came along with the P-80 and then the outstanding decoration for your home, I mentioned my comment in the May F-86. office, or workshop. Price will be $50 issue about the possibility of limiting Both books are 8-1/2 x 11, on high plus handling and shipping charges. All some beginners and/or OT rubber quality coated paper, heavy card stock prints will travel in sturdy mailing tubes. events for small models, to hand-wind four-color covers, and loaded with By the way, other limited edition prints ing .. . the real grass roots early modeler photos. Write to Historical Aviation will become available at suitable inter method of winding. . . He thought it was Album, Box 33, Temple City, CA 91780, vals. However, if you want the Great a great idea. By the way, his never- and send 50 cents in stamps or coin for Lakes print, get your order in early. before-published, 1937 Wakefield latest illustrated catalog. Tell Paul that Estimated handling andshipping charges model, will appear in MB in the near Model Builder sent ya. should not exceed $5. ·
104 MODEL BUILDER The K-Line KP5K Confidence for his first solo
mínith. responsive control slicks and high technology single integrated circuit encoder send clean strong signals finally lands. You're confident he': to the highly sensitive, interference resistant nnd com able equipment; a reliable K-line pact receiver. Our stands rd K-lhie series radio from Kraft Systems. servos deserve special mention. K-line radio control systems ______Unlike other standard economy from Kraft are the imported R/C sys servos, ours are fast, low current tems with a big difference; the Kraft drain servos that feature sealed puts label. K-line R/C systems arc the re with carbon wipers (not metal) and sult of Kraft’s efiorts to bring you an 5 pole motors with carbon brushes inexpensive imported radio witli for high torque and long life. the same solid record of reliability There’s a variety of K-line as those made at the Kraft plant in radio control systems just suited Vista, California. Because K-line a · · · to your particular needs includ R/C systems are designed, ing our innovative championship manufactured and tested Λ KP3KW/B pistol grip wheel radio to strict Kraft Systems stan- .■ for R/C cars and boats. See your dards, they will perform re- ■ favorite R/C hobby dealer or write liablv for years, and you can \ · for our detailed brochure on the purchase them at a competi- f l -----■ complete line of Kraft radios and tive price. the Kraft quality difference. The KP5K is the K-line V ■ Kraft Systems Co„ P.O. Box 5 channel R/C system. v— ^ 1268, Vista California 92083 This system features (619) 724-7146. adjustable dual rates oil tin· transmitter with plug-in radio frequency sections available for I a * - Receiver II II Your next R/C project ***** Γ1* ■** 1 II is worth it. L WILLY W ILD W
KIT SPECS Body off trom Wtllys M38 military vehicle Length 13W Width W Height 10W
Power Mabuchi - RS-540 Electric Motor road (2 channel R/C and 6 or 7 2 volt S BUGGY G G U B T N U ST
Talk about wild... Willy is it. Talk about iun... Willy's the one. It's MRC-Tamiya's stunt buggy kit. Its been geared for everyone ... whether you're into R/C off-road or ready to take the plunge. ■ To begin with it looks like tun. From Willy in the driver's seat to its oversize sand tires and rugged jeep-like chassis, through its spring loaded front bumper that soaks up shocks and bounces Willy back into actioa Willy was m ade for stunting. Its wide track and short wheelbase m ake it perfect for wheelies. spinouts, donuts, figure eights, and uphill climbs... Wild Willy was engineered to do it all. From asphalt to m ud from sand dunes to rocky slopes. Wild Willy takes them in stride, i STUNTABILITY... It's all in the engin eering ... technology that only MRC-Tamiya could create. We've given Wild Willy an ability for super, quick acceleration beyond conventional off-road cars. And we've coupled this with a front wheel independent suspensioa four ball bearings, long trailing arms and differential gear on the rear axle. It adds up to stunt- ability you're going to love. Then, to m ake sure this wild buggy keeps its balance, we engin eered spring wheelie casters to keep it right side up while it's hotdogging through the boonies. But just in case, we had a strong roll bar built into the rugged chassis to keep Willy in one piece. ■ Wild Willy... engin eered conceived and built to MRC© an be the first, high performance, Model Rectifier Corporation off-road stunt buggy ever made. 2500 Woodbride Avenue It's pure pleasure. Go for it. Edison New Jersey 08817
