Radio Control: Scale

Radio Control Scale Bob & Dolly Wischer WING BALANCING July81 column topic balancing wings explored letter Doug Dahlke informs us didnt complete discussion Doug places end balsa sheet scale opposite end resting suitably placed block sheet level reverses sheet determine end heaviest says feel missed last part What should have added make sure find heavy end balsa sheet RC FF planes heavy end goes toward fuselage CL models goes outboard circle As learns about balsa discovers can significant weight differences 3-ft length sheet Ive seen 50% difference 4-ft length interesting advantages placing heavy sheet leading edge spar trailing edge ends toward fuselage 1 extra strength denser wood goes exactly needed 2 reduction excess tip weight increases strength reduction all-up gross weight balancing weight needed less will required 3 reducing polar moments inertia think thats correct jargon model becomes responsive ailerons 4 disturbed gust wind disturbance less likely severe easily controlled less servo strain could go think get idea Further should hardly ever applied aspects model building example fuselage side called piece 3in x 36-in sheet know end heavier would put Toward nose course avoid tail-heaviness build ing constant-chord wing heavy ribs go toward fuselage lighter ribs toward wing tip Perhaps luck can reduce weight get back building flying model airplanes rather controlled aerial bricks make semi-controlled crashes landings Remember light models need less horsepower therefore same engine runs slower fewer cooling problems Doug lives Oshkosh WI site annual EAA Convention Fly-In laments coincident dates event Nats writes does AMA insist holding Nats during EAA week Believe some modelers fly Scale Now anyone flies Scale RC CL FF knows about EAA Theres no reason Nats cant week earlier later Would like see pick up ball push issue Have readers write 36 Model Aviation Rear view Bill Forresters 1/6-scale 1909 Voisin Power OS60 4-cycle notes flying interesting since CO has about 75% chord get useful effect frontmounted elevator turnbuokles lots homemade Photo Peter Miller Old Warden Scale Day Grumman F9F Pantherducted-fan model designed built British fan expert Marcus Norman Power K&B 65 driving homemade fan uses no pumps other extras Model weighs 7 lb has432 sq wing area flies well Uses Skyleader RC gear Marcus isthe son P E Norman pioneer ducted-fan design Photo Peter Miller atthe AeromodellerAll Scale Day Old Warden Bedfordshire England Luton Minor British home-oummi uesign uarlng srom pre-ww II daysit still being built today Peter Millers 1 /5-scale model 60-in span powered 0-Mark 30 twin weighs 5 lb 4 oz engine has enough powerto enable loops stall-turns rolls turbine-smoothness all-moving fin surprisingly ineffective AMA has sore point wiht some us Scale types long time understand selection Nats dates has result availability sites dormitory facilities Brad Shepherds smoke maker June 81 issue MA featured Scale-like aerobatic model closely resembles Stephens Akro article Brad Shepherd detailed smoke apparatus uses air shows model recent letter writes Dont know aerobatic guys read column bound some Scale buffs like myself playing around smoke thought would worthwhile passed along some info Thanks Olin Brown Beaumont TX marketing engineer Texaco son Control Line modeler have found good smoke juice reasonably priced about $260 gallon furniture polish using $159 pint discount stores getting expensive stuff called Almag put out Texaco local rock hounds use cutting oil works well smoke system Another product family EDM fluid Almag available five-gallon cans Unfor tunately EDM comes 55-gallon drums Nats Notes often wonder what about RC Scale model flying attracts large crowds Nats applause comple tion successful flight particularly model difficult subject leads us bejieve spectators appreciative ajob well done However well know element risk Scale flight could powerful attraction modeler now AMA vice-president heard lament recent Nats enough crashes satisfy lust Admittedly too accidents Nats RC Scale flying Models supposed have flown previously minimize acci dents provide measure safety spectators judges modelers scene Continued page 118 quite dont shrink 2% weve added Flightilne Shirts Expan Prop Wash books towels new shirt designs line One-Liners nicest quality heavyweight footbali Plane Shirts Colorful planes backed Plain Plane Shirts Colorful planes Prop Wash $1050 shirts Sky blue white topstitching OP has thoir hktnrv Mens lMl $725 cloud background Mens Mi Youve inverted Pitts pilot falling midshirt Mens sizes v" S725 Womens WI $825 Kids l( looking years Weve found out nandy aerosol can Cleans PP2 PP2 away oil PPZ PPSB PP38 LightningPPTBunburnt PP47 Thunderbolt PP26 Bzb earauoer PP4O WiawIsPPA2fuel ppsi MustangPPB6 FB6 SabreActually PP6I Black WidowPPM P4 Phantompolishes PP19 Fwl9OPP15 P15 Eagle PPA6 ZeroPPFF PS Freedom Fighter plane PPSP SpitfireFF10 Sf109Order PSI6895 PECIAL ake checks Money Orders payable Flightilne Shirts Etc 1781 Johnmark Circle Grants Pass OR 97526 Mens Sizes 5 32-36 M 38-40 L 42-44 X 46 Ladles Sizes S 8-10 M 12-14 L 16-18 X 20-22 Kids SIzes 56-8 M 10-12 L 14-16 X a Vsa/MasterCharqeIcCeptedWthaCCOUfltflUmSerexPIra~oedaeaF~ sgnature Send SASE brochureADD 10% FOR POSTAGE AND HANDLING December1981 37 Ray DeFrains Stinson bH- Hellaniwas built GS Products kit 8 lb 4 oz floatplane spans 62 uses OS 4OSR finish clear polyurethane over Coverite Al Cooks Gioster UlaOiator IS powered side-mounted Fox Eagle 60 scale exhaust pipes functional Finish Coverite aluminum enamel fuselage No data weight size nal MOCKS 11 aiieruuve IIwu s indicates Action series books $495 Buyashirt matching book deduct $100 theorder listed brochure______________________________________________ EAKL SPECIAL * LEISURE TIME EXTRAGraphics FREE CARDJ Presents Holiday Pleasure I &ENVWI [HI Hobbu Cords A*I 9 *2OCARDS &ENV/BOX ii *ALL CARDS 57 LIST PRICE $1200 BOX 11 * FULL COLOR Special $995 Box I_ II I_ I MAKE CHECK Ol MONEY ORDER PAYABLE TOHOW TO ORDER __I ~t1UR BOX FOR POSTAGE HANDLING AND INSURANCE IflEISURE iTIME Graphics NY STATE ADD 7% TAX STATEN ISLAND NEW YORK 10306I POST OFFICE BOX 108NY CITY ADD 8% TAX LNo Cash Stamps Please YDESCRIPTION 0FYC CC -SKN HPYD IRUN CR C0C GLIDER & SANTA CHASING FREE FLIGHT ON MOTOR BIKE$995 C 50 LAII MIXED BOX 730 735 740 745$995 118 Model Aviation RC Aerobatics/Van Putte Continued page 35 stance pot made worn wiper carbon dust causes false feedback information generated within servo Typical symptoms nervousness poor centering servo Cleaning relubricating pot very easy well within ability of us Paying technician clean servo pots terrible waste time money Im about attempt describe clean servo pot accompanying pictures arrows would much better contact someone club knows ask him teach wont take five 10 minutes learn well enough clean own servo pots teach others few years ago fellow club member brought servo exhibited symptoms described told him pot needed cleaning said hed have send servo back factory because afraid open After spending 10 minutes showing him clean lubricate pot went away gleam eye became evangelist cleaning servo pots offering teach other fliers flying field taught him change servo polarity thats another story jury still out subject contestant judging Most people agree having Expert Master class fliers judge Novice Advanced class fliers seems work reasonably well since usually familiar way maneuvers supposed look However lot resistance having Novice Advanced class fliers judge Expert Master class fliers since unlikely will know details maneuvers should performed particularly Master class Perhaps best way implement contestant judging minimum complaints have Experts Masters judge Novices Advanced have host club provide judges Experts Masters Any comments Ron Van Putte 111 Sleepy Oaks Road Fort Walton Beach FL 32548 RC Scale/Wjschers Continued page 37 suspect models have first flights under ideal conditions no wind gentle breezes straight down runway Realistically some early flights should made under conditions pre vailed Seguin round brisk crosswind gusts severe turbulence four mishaps occurred during round caused fliers inability control models due stalls near ground wind threatening carry model behind runway edge designated safe limit models turned wind too steep angle airspeed Three crashed behind line narrowly missing crowd spectators mushed ground Having share crashes know feeling always tend overemphasize unusual scratch built models write-up number kit airplanes among top places especially Sportsman class Sport Scale first second place winners Continued page 122 Giant Scale 1911 BLERIOT Xl BUILDS FAST FLYS LIKE TRAINER MASTER CRAFT Rt 3 Box 201 lilisnoro UK 97123 1 648 CANTON MODEL PRODUCTS Presents Dip Stick FAST QUICK EASY TO FINISH t DS 40 55 SPAN 560 SQ IN WING LOADING 165-20 OZ 29-45 ENGINE 43 LENGTH 3 OR 4 CHANNEL PRICE 4995 ADD 4 SHIPPING CHARGE DS 60 641/2 SPAN 672 SQ IN WING LOADING 20-22 OZ 46-60 ENGINE 48 LENGTH 3 OR 4 CHANNEL PRICE 5995 EXTREMELYADD 6 SHIPPING RUGGED TRAINER CHARGE WITH SYMMETRICAL AIRFOIL FOR AEROBATIC FLYING HIGHLY PRE-FABRICATED KIT INCLUDES PRE-SHEETED BALSA FOAM WINGS PRE-BUILT JIG ASSEMBLED WOOD FUSELAGE PRE-SHAPED BALSA TAIL ASSEMBLY PRE-FORMED LANDING GEAR TAIL WHEEL AND AILERON WIRES INSTRUCTION SHEET WITH FULLY ILLUSTRATED ASSEMBLY DRAWINGS TO ORDER SEND aANK CHECK OR MONEY ORDER TO CANTON MODEL PRODUCTS PO BOX 6063 CANTON OHIO 44706 OR CALL 1216 4541535 FOR IMMEDIATE COD SHIPMENT Low P sos Cannot 0 scoco Deal kit planes Bill Coombes used Jemco kit Grumman F6F-3 Hellcat However extensively modified kit changing built-up stab fin borrowed model railroad hobby using Floquil Poly-S paint finish Another highly-modified kit Sig Citabria entry Cliff Tacie Some ot modifications fiberglass cowl made female mold rugged landing gear made doubled S/32-in music wire coated resin built-up wheel pants windshield formed 060-in acetate sheet Fourth place good enough give Cliff Citabria place next years international Sport Scale team Marvin Saulters smooth Ifying North American B-25 Mitchell twin modified Royal kit Several modelers entered two models separ ate classes Fourth place Giant Scale won John Pagan Platt kit model -scale Bucker Jungmeister John also entered Sport Scale miniature version same plane based Flyline kit modified tail surfaces cowl turtledeck set apart others Nats its Davis diesel conversion 10 engine second consecutive year diesel has appeared Nats RC Scale gathering information models usually examine documentation presented static judging search bits data would interest readers Too often see presentations woefully inadequate certainly caliber required national competition Much appears gathered after model built Lack proof color worst offender Poorly drawn three-views absence clear photos showing overall pro portions prototype also sore spots wide variation presentation quality Really excellent booklets rare approach worthlessness rule book gives good description what needed common complaint fliers caller working pilot forgotten maneuver resulting zeros flight score sheets became easier understand saw scrap ofpaper used caller reminder maneuver sequence use 4-in x 6-in piece heavy white cardboard maneuvers lettered bold black felttipped pen finger run down list exact order flight sequence makes certain nothing omitted Dolly also reminds repeat name maneuver call Out its start call its completion though recognized flight must terminate landing some judges will score zeros landing called out have made practice stand close some better fliers will keep up constant stream chatter AVAILABLE NOW PRECISION SCALE beautiful smooth flying1 machine 80 span 15 lbs using 91 engines up Special Edition kit 00 De Luxe version. $37500 Super De Luxe .. $42000 Pius shipping judges informing intentions through out flight fellows seem relaxed contestants may good therapy contest nerves Lincoln Nats 1979 twin-engined models problems crashes caused loss engine six years twins successful flighL Precision airwork highest quality twins First second fifth places Sport Scale Expert class twins Twin Mus tang F-82 Art Johnson Domier Do23G Leonard McCoy Shrike Commander Roger Geers Tom Cook received NASA Flight Achieve ment Award spectacular F4 Phantom ducted-fan twin remaining two twins Lock heed Lightning P38 George Rose Mitchell B-25 Marvin Saulter excellent trouble-free flights Until met stiff Nats competition Marvs B-25 never less first place contest lacked refine ment retracting landing gear really serious fault remember last years winner twin retracts pleasure watch Roger Geers takeoff landing followed painted centerline markings runway well use wheel brakes simulate ground handling proce dures Scale Category Director Bob Underwood manpower problem static judging use some contestants job static display area air-conditioned Seguin Coliseum models judged outdoors 90 1000 temperatures order use natural light judging finish color heard no complaints about judging flight judges recruited San Antonio area As 1977 Riverside Nats expected strong competition Scale enthusiasts Southwest traditional hotbed Scale activity Again 77 team members selected came eastern US Only two airplanes Focke WuIf Howard Ike Earl Thompson western candidates team selection make certain team models met FAI 6kg weight limit Monty Groves weighed team members models flight line model found have gained couple pounds between static flight judging eliminated competition team place brought Charlie Chambers team making him happiest man field Bob Dolly Wischer Rt 2 S-22JLap ham Peak Road Delafield WI 53018 read about Model Aviation writing advertises mention RIC Free-Flight Assist Friendly Giant SUPER BUCCANEER Plan Set 88 Win1poe 5 Ee In1795 Wgt 79 W/G radio 25 chan Original design dates 1937 F/F era#RCFF1 Prices Complete Plans Sub Assembly Detailed Parts Lists Add $200 Mailing Tube Send Brochure Details new designs & great thin9s come Send $100 refundablel information S Model Aviation 1/4 SCALE 1918 NIEUPORT 28 c-i additional infomiatlon WW 1 Ciassic Catalogue sendS200 PROCTOR ENTERPRISES CORP PO Box 9641 San Diego CA 92109