Free Flight DURA TION Bob Meuser SYMPO 82 last call barely time get paper accepted 1982 NFFS Symposium Report Deadline April 1 hardship case perhaps can negotiate Editor Jim Bennett 324 Helfenstein Ave St Louis MO 63119 Laminar-flow airfoils FF7 usually reliable source has three-times FAI FF World Champ Thomas Koster has messing laminar-flow foils FAI Power models Hmnim Normally wed rather have turbulent flow upper surface least keep flow separating least glide climb laminar flow would blessing cut down drag again separation could cause large increases drag could occur both top bottom surfaces though lift essentially zero foil isnt shaped just right anything other classical infinitesimallythin flat plate Laminar flow during glide Perhaps very low lift coefficients means gliding fast isnt way normally play game minimum sink speed criterion glide flattens speed increases virtue lower profile drag coefficient perhaps can win game Lower lift coefficient means lower induced drag perhaps lower aspect ratios order means greater chord hence higher Reynolds number also increased higher flight speed higher Reynolds number gives lower skinfriction drag coefficient Characteristically lam mar flow foils have maximum-thickness point well aft Koster reported have wind tunnel disposal charac teristic thoroughness hes just liable come up new answer old problem Fuse-type engine timer use fuse de thermalizer timei- engine timer well problem past has find fuse material burned fast predict able burning speed Commercial dynamite fuse does exactly Kitco has introduced engine timer utilizing Kitco device simple affair cobbled up music wire aluminum tubing must well-anchored fuselage prevent being torn out being set up device cocked pushing wire spring side inserting stiff fuse hole tube fuse burns past wire wire snaps over pinch surgical-tubing fuel line pinch-off action quite positive fuse lit after engine started means punk consisting length Sig DT fuse Once fuse lit no turning off Pinching pliers dunking water wont little scary obviously potential danger involved can say about lot things especially half-horse power buzz saws put noses Gas models routine using fuse-timer should well rehearsed Installed weight 06 oz save about ver Tatone type timer few grams over modified Tomy Toy motor Price mechanism fuel tubing engine fuse bit DT fuse punk instructions $750 Order Kitco 4327 McDermed Houston TX 77035 Add 10% postage cure common flutter Wing flutter common problem FF competition classes has become severe Towline Gliders zoom-launch speeds have increased Increas ing torsional stiffness wing sheet covering boxed-in leading edge diagonal ribs always helps 56 Model Aviation Guess built Embyro Endurance model Dick Baxter designed it uses pull-pin landing gear retractershown herein December51 Issue Bill Warnerbuilt/photod Bob shouldnt called Embryo Duration event aunn waiter oesigneo hub all-odisa O-n pa bPUIL Ih1UUU nierniony WILfl UUbIfl PIflUIPIUb espoused C H Grant ModelAirplane News during mid-30s Uses Mattel electric motor IIII1F1 ILI7Q before/ / __ /fr -. 7TA /J-______ -— -------------/ __________________________7 I/i / - Lin& fti4sein _EQL22c& way stop wing after flutter Theres column 0 Kitcos new fuse-type engine timer Uses commercial dynamite fuse Bostonian event. nuvhEtze7ifjtn&tI2tn 5topped 3ohnTroIo I--A II/ EEh\\ m U /4 //iU iI i--i #terfrst painting. Confused Wait till read Bobs description paint checkerboard patterns model Its actually simple task U. Prasanta Banerjee India writing Theedges perhaps33 Calcuttan has taken new look some 10- toeven bailast along 15-year-old papers subject has triedthe LE Prasanta out what learned read wingsadded some diago structural mass distribution important thenal ribs forsecond parntit~ structural CGofthewingshouldbeweilforwardward part oldCt means stout leading edges light trailing Continued page 126 Li11tNT April 1982 57 AUEE Look Future Product DeveIopmen Full Command Systems Manufacturers EK Logitrol radios accessories py eai Dealer Inquiries Welcome Full Command Systems 9O8ERo sewood Spokane WA 99207 . 509 487-2122 414 90 1 r CaQtcg213 76 JIceceggoktcgPO BOX R/C GOODIES 192 S VAN NUYS CA 91408I month 3uvdia offering SPECIAL PRICES several accessory items RegularI 1prices shown small tvoe BARGAIN PRICES shown heavy typeI VCAPS$895UNIVERSAL SERVO TRAY Hi Visibility 2Color Caps I match 72 MHz Freq Specify size fits 5289 AIR-FLO HINGES21 tray Bantam Connon N OCE3 CE4 CE5 Futaba Kraft KPS12 Midget servos1 mcMtg hardware included C Q FREQUENCY FLAGS j 051 Golden Bee etc Uses Iron Hinges easy chable holder1 standard 1/432 glow pluginstall Strips 36 Ig polyester ribbons $209SMALL 1iLARGE 1 1/2All Frec colors $169$149 $169I Urn$2500$169$199 VISA ORParts Ship 7 Calif add Soles Tax Catalog 604 MORE US $1 70 Foreign Add 4-1/2% Visor Master Cordj heat desired Saran film may painted inside prior application Most spray paint will work will look like expensive factory-painted -glued Mylar films small fraction cost Scotch Monocoat will exclude moisture better before painting Since F&M Saran Wrap softer Mylar does tend get scuffed up bit making landings hard sufface such spots turn up easily repaired bit 5-mm epoxy smeared bad spot might instead put piece Mylar over spot Conclusions seems ridiculous believe piece flimsy highly-flexible easilysquashed piece foam could stiffened given enough strength addition mere paper glue become competitive model airplane begins cover long thin wing instance first thought handling delicate coat might might well try cover wet noodle once foam has taken its paper clothing undergoes transforma tion unlike metamorphosis David Banner turning Hulk say proof pudding eating What will such model competi tion date foam fleet has won nine trophies five contests using first-generation hardware SFC approach has now used success fully several types FF models including Hand-Launched Gliders P-30 Coupe Un limited Rubber models A-i Towline Gliders catapult gliders well classes AMA Gas 020s through Class D SFC natural CL Combat wings perhaps 45 models built far three RC tremendous potential also especially Quarter Scale beginners FF gas model using reed-valve 049 has built successfully tested almost lost third flight will subject follow-up article soon appear pages have recently discovered inherentlymore-efficient tapered wings can SFC-built slight increase time effort addition several layers silkspan usually required beef-up center thicker wider airfoil doing job instead results lighter overall model efficient well After years research development testing evaluation SFC concepts techniques convinced ever could eventually replace balsa wood long modelers approach open mind relative prices balsa foam reverse detailed SFC data special materials available directly author 3744 E Nye Lane Carson City NV 89701 Please send SASE inquiring FF Duration/Meuser Continued page 57 wing found formerly severe flutter problem virtually disappeared add ing diagonal ribs both increased torsional stiffness wing moved its CG forward difficult say effect turned trick Deluxe flufi~ dispenser use cattail fluffies thermal-detecting aid has become quite standard have habit making mess cute trick get upwind 126 Model Aviation Division B & B Industries Looking Hard Find Soaring Goodies Jfe &i4fane fT/acory o has complete comprehensive line R/G Soaring productstoeverexist North America o Our line products includesthosefrom some respected firms Europe well complete inventory own US manufacturers o We carry complete line Kits Hardware Accessories & Building Supplies have full inventory Launching Equipment & Related Products o We serve serious R/G soaring enthusiast supplies kits other items have sought long Call write today Free product listing & price sheet Sailplane Fcto717 244 4508 PO Box 34 Red Lion PA 173569am- 9pm EST PS Come see displays 1982 WRAMS & TOLEDO shows stripped-to-the-waist sweaty competitor blow fluffies over placebut really isnt very sporting avoid some mess modelers simply wrap cattails individu ally newspaper Rex Hinsons method reported FMA News seems especially neat Start ample supply plastic golf club tubes small waxed-paper cups cattails Cut off sections golf tube bit longer cat tail Poke hole cup put stem cattail through put cattail golf-tube section rubber-band cup over end tube Jubber-band another cup over other end ready use cattail remove second paper cup push part cattail out tube through pull unused part back tube can dropped ground stomped ridden over chase bikes making mess Painting checkerboard patterns Its easier might think easier to describe dont have draw guide lines whole pattern pair perpendicular guide lines anywhere pattern will suffice Youll need supply masking tape having right width cant buy exactly width want make yourself wider stuff using drafting board tee square hobby knife proceed follows 1 First paint background color 2 lay down strips tape horizontally edge edge 3 Remove second strip 4 Repeat steps 2 3 vertical strips tape 5 Paint now half finished 6 Remove vertical strips 7 Re place horizontal strips removed step 3 8 Remove horizontal strips removed step Continued page 130 April 1982 127 GLOWGONTIOLINI TEND PROFILE0COMBA 7RA T lireb PLUGSWIDE & NARROW WEDGE 6 oz C8pa cities UNIFLOW & ITINID S Blow Proof Seal Six Types 3 Heat Ranges Longer Life S Flash Starting Only $120 SWANSON PO Box 1Since 7948 Wayne NJ 07470 Custom Dliii Fish Ingredients detailed brochure send 50 cents CAROLINA TAFFINDER 8345 Delhi Road Charleston Hgts Sc 29405 Sport RIC Design / Distributors & -- Phone NOT JUST ANOTHER CATALOG novice tips experts expert thousands products specifica tions photos help decide make hobby enjoyable everybody interested R/C its standard reference book Will Ever Need Available through local hobby shop use coupon nd copy new RADIO CONTROL BUYERS GUIDE L Enclosed $950 $795 plus $155 postage US & canada dians send US funds VA residents add 4% sales tax EZ charge D Mastercharge D visa charge No_____________________ Exp Date _______________ Name Street city State Zip Return Boynton & Associates Inc clifton House clifton virginia 22024 v33][b248229601919600]] 3 9 Replace vertical strips remove removed step 4 10 Paint 11 Remove remaining tape 12 Admire knew Id manage make seem complicated following applies masking-anddoping job press down edges tape care fully being certain no places dope can seep under Paint coat clear dope seal edges just case previous job wasnt done perfectly apply colored dope Masking tape very sticky might ruin model getting stuff off four cures problent 1 Use drafting tape available artists supply stores instead masking tape 2 use masking tape before applying stick onto some slicksurface thin paper erasable bond paper works cut away leaving about 1/16in edges tape exposed 3 Always remove tape pulling parallel surface never perpendicular 4 Some say clean living helps cant vouch Bostonian events another Indoor event several forms has achieved some popularity rules Bostonian event flown East follows maximum pro jected wingspan 16 maximum chord 3 maximum prop diameter 6 power limited rubber motors minimum weight motors 7 grams maximum overall length prop 14 fuselage must con tain theoretical box measuring 1 Y2 x 2 x 3 larger longerons must support motor no motor-sticks fuselage must have forwardfacing windshield window side must have area least 1 sq landing gear must fixed two wheels least -in diam must rigid enough support model during hand-glide landing ROG takeoffs required Charisma factor judge rates model according model appeals him based construction neatness scalelike details uniqueness design etc 100 110 rating scale used An unlimited number flights allowed score total flight time best three flights multiplied charisma factor East Coasters seem happy 7-gram weight rule although far too light successful modelers build models lighter add ballast San Diego Orbiteers have added some modifications call event Bostonian West Minimum weight 14 grams Chord limit applies wing addition total wing area limit 48 sq makes pretty tough biplanes tandems forward windshield rule clarified projected frontal area counts Open-cockpit models required have side windows must have 1 sq side vision imaginary pilot turns out model made 1/16-square sticks plastic prop double-covered surfaces just about hits weight minimum nose add bit zest Orbiteer Walt Mooney added requirement meets models should carry pre-World War II military insignia maximum charisma factor 11 isnt much incentive add scalelike fea tures would detract flight duration Im saying bad greater factor say 12 would put emphasis scalelike features unusual confignrations full rating scale utilized would nothing everyone got scores between 1 18 120 Per sonally Id rather see length restriction deleted 130 Model Aviation Modelers Choice GMP EPOXIES High Quality Model Construction Jr Kwik Set 6 Minute 5 oz $550 Kwik Set 6 Minute 10 oz $995 Giant Kwik Set 6 Mm 16 oz $1295 Half Fast 10 Minute 10 oz $850 GMP AIRCRAFT INSTRUMENTS 80 3/16 1/4 3/8 1/2 $149 40 3/4 inch$149 TUFF STUFF FUEL LINE Three Feet Latex$ 98 Six Feet Latex$169 EASY OFF PULLER proper tool removing drive washers flywheels $795 net year deaiec erder direct Add $150 fer peateg & handling GAS MODEL PRODUCTS 8773 Russet Drive Cincinnati OH 45239 1513 3857398 another beginners class Well exactly Rather indoor event plastic-prop models maximum dimensions span length 24 Called P-24 event born Great Northwest best time far close five minutes Dave Hagen sent information event suggests better choice beginners event would have dimension limits 15- 20-in range would seem Novice Pennyplane AMA rules would fit bill plastic-prop requirement would bypass biggest hassle beginner However Dave further suggests models required ROG flat-blade sheetbalsa props permitted addition plastic props seems ROG requirement building landing gear pointless hassle permitting anything other plastic prop loses whole point further point favor plastic-prop Novice Pennyplane would once beginner got hang advancement AMA Novice Pennyplane would relatively painless step Indoor winder RMS Tooling has introduced winder having 161 ratio winding Indoor models similar size old metal-case Wilson winder understand no longer made has same ratio isnt smooth 201 winders Bob Wilder used make doesnt have turns counter Wilders did cost fifth much Wilder would have charge make winders today fully guaranteed retail price 1t$*$ INTRODUCTORY PRICE PLUS SHIPPING Tired walking WANT LAUNCH EVERY MINUTE ORDER SAILPLANE LAUNCH LINE RETRIEVAL SYSTEM LIGHTWEIGHT BUT HEAVY-DUTY DESIGN TO RETRIEVE ANY SYSTEM COMPLETE WITHBATTERY POWER CABLES HAND SWITCH CONTROL LINE GUIDE AND 1000 OF BRAIDED LINE DAVEY SYSTEMS April 1982 131 maximum length increased say 20 init would better match snazzylooking canards deltas sometimes build STEARMAN PT- 17 Offered Two Sizes Quadra 60 Quarter Scale Quadra type Engines 96' Span 2 Scale Far 60 Engines 64/ Span 1000 Sq Quarter Scale Plan Set $3250 2 Scale Plan $1850 Please a'ther designs Kits offered CORPORATION Wood Lane Malvern Pa19355 215644-0692 4 Gal Case %One or5GalCan 24 Gal Per Gal 575 650 750 800 825 985 1500 2400 126 Gal Per Gal 525 575 645 725 775 950 1400 2300 30 Gal Drum EA 9700 13300 16100 17800 19000 24200 36500 58200 54 Gal Drum EA 13500 19900 25000 28000 30000 39000 60000 97500 Prices subject change notice Free delivery 1 4 5 24 & 126 gal deals 30 & 54 gal drums freight collect FOB Clover SC Gallon price determined nitro content & total quantity ordered SC orders add 4% sales tax Add $250 COD package $100 maximum charge card & COD orders NEW Power Booster 1/4 scale eng $1 2O0/qt $3800/gal freight included Use 3 os/gal gas mix eAmerican made eSchnuerle ports eDouble ball bearing sPerry carburetor eForged & domed piston Forged & busheu con rod eQ-ring sealed back cover elnvestment cast crankcase Suggested Retail $14600 Muffler Included Kraft Engine Warranty Parts & Repair RJL INDUSTRIES PO sox 5654 PASADENA CA 91107 213 359-0016 795-9821 NEW Performance Fuel Higher RPM & longer runs easier starting good wear characteristics mixture properly set Use RED MAX price plus 10% SILKSPUN COVEPITE exclusive Hi-Lo Temperature Range prevents accidental warping greatest sheeted ft7 surfaces per sq ft i L PA 19044 $1195 dealer discounts five RM S Tooling 11370 ElDorado Ave San Fernando CA 91340 Bob Meuser 42eX Gregory St Oaklan4 CA 94619 FF Scale/Warner Continued page 59 Photos new photo service us like build planes 30s 40s now offering sample WACO 5 x 8 B/W catalog listing 3684 pix for$200 Sendto Hank Clark 7285 May St Ft Edward NY 12828 Yep Hank oaly draws em hes snapped plenty em too Edito Hank Jr now operates photo service Send hints tips especially de warping winders upcoming columns Bill Warner 423-C San VicenteBlvd Santa Monica CA 90402 Kids Petro Continued page 62 up turn climb vertically 45-deg eleva tion level applyfulIdown plane returns completed loop smoothly go full down medium up control plane will break out loop pull Out normal level altitude Practice high outside loop experience importantly determine plane aerodynamically capable tight outside turn may need change balance engine thrust line control linkages Sometimes new plane needed Part reason larger outside turn control handle setup normal sport flying handle set slight down angle like handle pistoL feels comfortable lets plane fly level groove nicely limits much wrist can pivot down set handle upright soup down wrist pivots equal hand no longer comfortable neutral position will have concentrate fly leveL Set up handle trim individual taste requirements grooving maneuvering What needed handle finger-actuated trim change feature Whos going invent Inverted flight youre still may second airplane Thats alright may get rid too next maneuver inverted flight prefer hold handle normally make movements very slowly first can see plane going way its supposed go up handle turns nose ground down handle turns nose top circle have remember up down down up Have helper hold upside down practice ground before attempting air first attempt should keep plane high allow room corrections fly inverted -lap will need Stunttype fuel tank keep engine running inverted Keep practicing until can stay inverted three level laps Pull-outs can made anywhere except windward quadrant circle Join AMA basic Stunt maneuvers low level inside outside loops wing-over inverted will make schoolyard ace 132 Model Aviation Gal 1050 1150 1250 1325 1400 1750 2500 3000 Per Gal 625 695 775 825 850 1025 1600 2600 Tour UlIOli 0 UdLO[ syiiiiiiiu ally UOlliOIlldLlOll 01 UdLOl duo ayuiirniiu oil Nitro 0% 5% 10% 12% 15% 25% 40% 60% Nobody does better Nnhndu dnpq ,hpanprCOMING SOON NEW SMOOTHER RJL K61
Edition: Model Aviation - 1982/04
Page Numbers: 56, 57, 126, 127, 130, 131, 132
Free Flight DURA TION Bob Meuser SYMPO 82 last call barely time get paper accepted 1982 NFFS Symposium Report Deadline April 1 hardship case perhaps can negotiate Editor Jim Bennett 324 Helfenstein Ave St Louis MO 63119 Laminar-flow airfoils FF7 usually reliable source has three-times FAI FF World Champ Thomas Koster has messing laminar-flow foils FAI Power models Hmnim Normally wed rather have turbulent flow upper surface least keep flow separating least glide climb laminar flow would blessing cut down drag again separation could cause large increases drag could occur both top bottom surfaces though lift essentially zero foil isnt shaped just right anything other classical infinitesimallythin flat plate Laminar flow during glide Perhaps very low lift coefficients means gliding fast isnt way normally play game minimum sink speed criterion glide flattens speed increases virtue lower profile drag coefficient perhaps can win game Lower lift coefficient means lower induced drag perhaps lower aspect ratios order means greater chord hence higher Reynolds number also increased higher flight speed higher Reynolds number gives lower skinfriction drag coefficient Characteristically lam mar flow foils have maximum-thickness point well aft Koster reported have wind tunnel disposal charac teristic thoroughness hes just liable come up new answer old problem Fuse-type engine timer use fuse de thermalizer timei- engine timer well problem past has find fuse material burned fast predict able burning speed Commercial dynamite fuse does exactly Kitco has introduced engine timer utilizing Kitco device simple affair cobbled up music wire aluminum tubing must well-anchored fuselage prevent being torn out being set up device cocked pushing wire spring side inserting stiff fuse hole tube fuse burns past wire wire snaps over pinch surgical-tubing fuel line pinch-off action quite positive fuse lit after engine started means punk consisting length Sig DT fuse Once fuse lit no turning off Pinching pliers dunking water wont little scary obviously potential danger involved can say about lot things especially half-horse power buzz saws put noses Gas models routine using fuse-timer should well rehearsed Installed weight 06 oz save about ver Tatone type timer few grams over modified Tomy Toy motor Price mechanism fuel tubing engine fuse bit DT fuse punk instructions $750 Order Kitco 4327 McDermed Houston TX 77035 Add 10% postage cure common flutter Wing flutter common problem FF competition classes has become severe Towline Gliders zoom-launch speeds have increased Increas ing torsional stiffness wing sheet covering boxed-in leading edge diagonal ribs always helps 56 Model Aviation Guess built Embyro Endurance model Dick Baxter designed it uses pull-pin landing gear retractershown herein December51 Issue Bill Warnerbuilt/photod Bob shouldnt called Embryo Duration event aunn waiter oesigneo hub all-odisa O-n pa bPUIL Ih1UUU nierniony WILfl UUbIfl PIflUIPIUb espoused C H Grant ModelAirplane News during mid-30s Uses Mattel electric motor IIII1F1 ILI7Q before/ / __ /fr -. 7TA /J-______ -— -------------/ __________________________7 I/i / - Lin& fti4sein _EQL22c& way stop wing after flutter Theres column 0 Kitcos new fuse-type engine timer Uses commercial dynamite fuse Bostonian event. nuvhEtze7ifjtn&tI2tn 5topped 3ohnTroIo I--A II/ EEh\\ m U /4 //iU iI i--i #terfrst painting. Confused Wait till read Bobs description paint checkerboard patterns model Its actually simple task U. Prasanta Banerjee India writing Theedges perhaps33 Calcuttan has taken new look some 10- toeven bailast along 15-year-old papers subject has triedthe LE Prasanta out what learned read wingsadded some diago structural mass distribution important thenal ribs forsecond parntit~ structural CGofthewingshouldbeweilforwardward part oldCt means stout leading edges light trailing Continued page 126 Li11tNT April 1982 57 AUEE Look Future Product DeveIopmen Full Command Systems Manufacturers EK Logitrol radios accessories py eai Dealer Inquiries Welcome Full Command Systems 9O8ERo sewood Spokane WA 99207 . 509 487-2122 414 90 1 r CaQtcg213 76 JIceceggoktcgPO BOX R/C GOODIES 192 S VAN NUYS CA 91408I month 3uvdia offering SPECIAL PRICES several accessory items RegularI 1prices shown small tvoe BARGAIN PRICES shown heavy typeI VCAPS$895UNIVERSAL SERVO TRAY Hi Visibility 2Color Caps I match 72 MHz Freq Specify size fits 5289 AIR-FLO HINGES21 tray Bantam Connon N OCE3 CE4 CE5 Futaba Kraft KPS12 Midget servos1 mcMtg hardware included C Q FREQUENCY FLAGS j 051 Golden Bee etc Uses Iron Hinges easy chable holder1 standard 1/432 glow pluginstall Strips 36 Ig polyester ribbons $209SMALL 1iLARGE 1 1/2All Frec colors $169$149 $169I Urn$2500$169$199 VISA ORParts Ship 7 Calif add Soles Tax Catalog 604 MORE US $1 70 Foreign Add 4-1/2% Visor Master Cordj heat desired Saran film may painted inside prior application Most spray paint will work will look like expensive factory-painted -glued Mylar films small fraction cost Scotch Monocoat will exclude moisture better before painting Since F&M Saran Wrap softer Mylar does tend get scuffed up bit making landings hard sufface such spots turn up easily repaired bit 5-mm epoxy smeared bad spot might instead put piece Mylar over spot Conclusions seems ridiculous believe piece flimsy highly-flexible easilysquashed piece foam could stiffened given enough strength addition mere paper glue become competitive model airplane begins cover long thin wing instance first thought handling delicate coat might might well try cover wet noodle once foam has taken its paper clothing undergoes transforma tion unlike metamorphosis David Banner turning Hulk say proof pudding eating What will such model competi tion date foam fleet has won nine trophies five contests using first-generation hardware SFC approach has now used success fully several types FF models including Hand-Launched Gliders P-30 Coupe Un limited Rubber models A-i Towline Gliders catapult gliders well classes AMA Gas 020s through Class D SFC natural CL Combat wings perhaps 45 models built far three RC tremendous potential also especially Quarter Scale beginners FF gas model using reed-valve 049 has built successfully tested almost lost third flight will subject follow-up article soon appear pages have recently discovered inherentlymore-efficient tapered wings can SFC-built slight increase time effort addition several layers silkspan usually required beef-up center thicker wider airfoil doing job instead results lighter overall model efficient well After years research development testing evaluation SFC concepts techniques convinced ever could eventually replace balsa wood long modelers approach open mind relative prices balsa foam reverse detailed SFC data special materials available directly author 3744 E Nye Lane Carson City NV 89701 Please send SASE inquiring FF Duration/Meuser Continued page 57 wing found formerly severe flutter problem virtually disappeared add ing diagonal ribs both increased torsional stiffness wing moved its CG forward difficult say effect turned trick Deluxe flufi~ dispenser use cattail fluffies thermal-detecting aid has become quite standard have habit making mess cute trick get upwind 126 Model Aviation Division B & B Industries Looking Hard Find Soaring Goodies Jfe &i4fane fT/acory o has complete comprehensive line R/G Soaring productstoeverexist North America o Our line products includesthosefrom some respected firms Europe well complete inventory own US manufacturers o We carry complete line Kits Hardware Accessories & Building Supplies have full inventory Launching Equipment & Related Products o We serve serious R/G soaring enthusiast supplies kits other items have sought long Call write today Free product listing & price sheet Sailplane Fcto717 244 4508 PO Box 34 Red Lion PA 173569am- 9pm EST PS Come see displays 1982 WRAMS & TOLEDO shows stripped-to-the-waist sweaty competitor blow fluffies over placebut really isnt very sporting avoid some mess modelers simply wrap cattails individu ally newspaper Rex Hinsons method reported FMA News seems especially neat Start ample supply plastic golf club tubes small waxed-paper cups cattails Cut off sections golf tube bit longer cat tail Poke hole cup put stem cattail through put cattail golf-tube section rubber-band cup over end tube Jubber-band another cup over other end ready use cattail remove second paper cup push part cattail out tube through pull unused part back tube can dropped ground stomped ridden over chase bikes making mess Painting checkerboard patterns Its easier might think easier to describe dont have draw guide lines whole pattern pair perpendicular guide lines anywhere pattern will suffice Youll need supply masking tape having right width cant buy exactly width want make yourself wider stuff using drafting board tee square hobby knife proceed follows 1 First paint background color 2 lay down strips tape horizontally edge edge 3 Remove second strip 4 Repeat steps 2 3 vertical strips tape 5 Paint now half finished 6 Remove vertical strips 7 Re place horizontal strips removed step 3 8 Remove horizontal strips removed step Continued page 130 April 1982 127 GLOWGONTIOLINI TEND PROFILE0COMBA 7RA T lireb PLUGSWIDE & NARROW WEDGE 6 oz C8pa cities UNIFLOW & ITINID S Blow Proof Seal Six Types 3 Heat Ranges Longer Life S Flash Starting Only $120 SWANSON PO Box 1Since 7948 Wayne NJ 07470 Custom Dliii Fish Ingredients detailed brochure send 50 cents CAROLINA TAFFINDER 8345 Delhi Road Charleston Hgts Sc 29405 Sport RIC Design / Distributors & -- Phone NOT JUST ANOTHER CATALOG novice tips experts expert thousands products specifica tions photos help decide make hobby enjoyable everybody interested R/C its standard reference book Will Ever Need Available through local hobby shop use coupon nd copy new RADIO CONTROL BUYERS GUIDE L Enclosed $950 $795 plus $155 postage US & canada dians send US funds VA residents add 4% sales tax EZ charge D Mastercharge D visa charge No_____________________ Exp Date _______________ Name Street city State Zip Return Boynton & Associates Inc clifton House clifton virginia 22024 v33][b248229601919600]] 3 9 Replace vertical strips remove removed step 4 10 Paint 11 Remove remaining tape 12 Admire knew Id manage make seem complicated following applies masking-anddoping job press down edges tape care fully being certain no places dope can seep under Paint coat clear dope seal edges just case previous job wasnt done perfectly apply colored dope Masking tape very sticky might ruin model getting stuff off four cures problent 1 Use drafting tape available artists supply stores instead masking tape 2 use masking tape before applying stick onto some slicksurface thin paper erasable bond paper works cut away leaving about 1/16in edges tape exposed 3 Always remove tape pulling parallel surface never perpendicular 4 Some say clean living helps cant vouch Bostonian events another Indoor event several forms has achieved some popularity rules Bostonian event flown East follows maximum pro jected wingspan 16 maximum chord 3 maximum prop diameter 6 power limited rubber motors minimum weight motors 7 grams maximum overall length prop 14 fuselage must con tain theoretical box measuring 1 Y2 x 2 x 3 larger longerons must support motor no motor-sticks fuselage must have forwardfacing windshield window side must have area least 1 sq landing gear must fixed two wheels least -in diam must rigid enough support model during hand-glide landing ROG takeoffs required Charisma factor judge rates model according model appeals him based construction neatness scalelike details uniqueness design etc 100 110 rating scale used An unlimited number flights allowed score total flight time best three flights multiplied charisma factor East Coasters seem happy 7-gram weight rule although far too light successful modelers build models lighter add ballast San Diego Orbiteers have added some modifications call event Bostonian West Minimum weight 14 grams Chord limit applies wing addition total wing area limit 48 sq makes pretty tough biplanes tandems forward windshield rule clarified projected frontal area counts Open-cockpit models required have side windows must have 1 sq side vision imaginary pilot turns out model made 1/16-square sticks plastic prop double-covered surfaces just about hits weight minimum nose add bit zest Orbiteer Walt Mooney added requirement meets models should carry pre-World War II military insignia maximum charisma factor 11 isnt much incentive add scalelike fea tures would detract flight duration Im saying bad greater factor say 12 would put emphasis scalelike features unusual confignrations full rating scale utilized would nothing everyone got scores between 1 18 120 Per sonally Id rather see length restriction deleted 130 Model Aviation Modelers Choice GMP EPOXIES High Quality Model Construction Jr Kwik Set 6 Minute 5 oz $550 Kwik Set 6 Minute 10 oz $995 Giant Kwik Set 6 Mm 16 oz $1295 Half Fast 10 Minute 10 oz $850 GMP AIRCRAFT INSTRUMENTS 80 3/16 1/4 3/8 1/2 $149 40 3/4 inch$149 TUFF STUFF FUEL LINE Three Feet Latex$ 98 Six Feet Latex$169 EASY OFF PULLER proper tool removing drive washers flywheels $795 net year deaiec erder direct Add $150 fer peateg & handling GAS MODEL PRODUCTS 8773 Russet Drive Cincinnati OH 45239 1513 3857398 another beginners class Well exactly Rather indoor event plastic-prop models maximum dimensions span length 24 Called P-24 event born Great Northwest best time far close five minutes Dave Hagen sent information event suggests better choice beginners event would have dimension limits 15- 20-in range would seem Novice Pennyplane AMA rules would fit bill plastic-prop requirement would bypass biggest hassle beginner However Dave further suggests models required ROG flat-blade sheetbalsa props permitted addition plastic props seems ROG requirement building landing gear pointless hassle permitting anything other plastic prop loses whole point further point favor plastic-prop Novice Pennyplane would once beginner got hang advancement AMA Novice Pennyplane would relatively painless step Indoor winder RMS Tooling has introduced winder having 161 ratio winding Indoor models similar size old metal-case Wilson winder understand no longer made has same ratio isnt smooth 201 winders Bob Wilder used make doesnt have turns counter Wilders did cost fifth much Wilder would have charge make winders today fully guaranteed retail price 1t$*$ INTRODUCTORY PRICE PLUS SHIPPING Tired walking WANT LAUNCH EVERY MINUTE ORDER SAILPLANE LAUNCH LINE RETRIEVAL SYSTEM LIGHTWEIGHT BUT HEAVY-DUTY DESIGN TO RETRIEVE ANY SYSTEM COMPLETE WITHBATTERY POWER CABLES HAND SWITCH CONTROL LINE GUIDE AND 1000 OF BRAIDED LINE DAVEY SYSTEMS April 1982 131 maximum length increased say 20 init would better match snazzylooking canards deltas sometimes build STEARMAN PT- 17 Offered Two Sizes Quadra 60 Quarter Scale Quadra type Engines 96' Span 2 Scale Far 60 Engines 64/ Span 1000 Sq Quarter Scale Plan Set $3250 2 Scale Plan $1850 Please a'ther designs Kits offered CORPORATION Wood Lane Malvern Pa19355 215644-0692 4 Gal Case %One or5GalCan 24 Gal Per Gal 575 650 750 800 825 985 1500 2400 126 Gal Per Gal 525 575 645 725 775 950 1400 2300 30 Gal Drum EA 9700 13300 16100 17800 19000 24200 36500 58200 54 Gal Drum EA 13500 19900 25000 28000 30000 39000 60000 97500 Prices subject change notice Free delivery 1 4 5 24 & 126 gal deals 30 & 54 gal drums freight collect FOB Clover SC Gallon price determined nitro content & total quantity ordered SC orders add 4% sales tax Add $250 COD package $100 maximum charge card & COD orders NEW Power Booster 1/4 scale eng $1 2O0/qt $3800/gal freight included Use 3 os/gal gas mix eAmerican made eSchnuerle ports eDouble ball bearing sPerry carburetor eForged & domed piston Forged & busheu con rod eQ-ring sealed back cover elnvestment cast crankcase Suggested Retail $14600 Muffler Included Kraft Engine Warranty Parts & Repair RJL INDUSTRIES PO sox 5654 PASADENA CA 91107 213 359-0016 795-9821 NEW Performance Fuel Higher RPM & longer runs easier starting good wear characteristics mixture properly set Use RED MAX price plus 10% SILKSPUN COVEPITE exclusive Hi-Lo Temperature Range prevents accidental warping greatest sheeted ft7 surfaces per sq ft i L PA 19044 $1195 dealer discounts five RM S Tooling 11370 ElDorado Ave San Fernando CA 91340 Bob Meuser 42eX Gregory St Oaklan4 CA 94619 FF Scale/Warner Continued page 59 Photos new photo service us like build planes 30s 40s now offering sample WACO 5 x 8 B/W catalog listing 3684 pix for$200 Sendto Hank Clark 7285 May St Ft Edward NY 12828 Yep Hank oaly draws em hes snapped plenty em too Edito Hank Jr now operates photo service Send hints tips especially de warping winders upcoming columns Bill Warner 423-C San VicenteBlvd Santa Monica CA 90402 Kids Petro Continued page 62 up turn climb vertically 45-deg eleva tion level applyfulIdown plane returns completed loop smoothly go full down medium up control plane will break out loop pull Out normal level altitude Practice high outside loop experience importantly determine plane aerodynamically capable tight outside turn may need change balance engine thrust line control linkages Sometimes new plane needed Part reason larger outside turn control handle setup normal sport flying handle set slight down angle like handle pistoL feels comfortable lets plane fly level groove nicely limits much wrist can pivot down set handle upright soup down wrist pivots equal hand no longer comfortable neutral position will have concentrate fly leveL Set up handle trim individual taste requirements grooving maneuvering What needed handle finger-actuated trim change feature Whos going invent Inverted flight youre still may second airplane Thats alright may get rid too next maneuver inverted flight prefer hold handle normally make movements very slowly first can see plane going way its supposed go up handle turns nose ground down handle turns nose top circle have remember up down down up Have helper hold upside down practice ground before attempting air first attempt should keep plane high allow room corrections fly inverted -lap will need Stunttype fuel tank keep engine running inverted Keep practicing until can stay inverted three level laps Pull-outs can made anywhere except windward quadrant circle Join AMA basic Stunt maneuvers low level inside outside loops wing-over inverted will make schoolyard ace 132 Model Aviation Gal 1050 1150 1250 1325 1400 1750 2500 3000 Per Gal 625 695 775 825 850 1025 1600 2600 Tour UlIOli 0 UdLO[ syiiiiiiiu ally UOlliOIlldLlOll 01 UdLOl duo ayuiirniiu oil Nitro 0% 5% 10% 12% 15% 25% 40% 60% Nobody does better Nnhndu dnpq ,hpanprCOMING SOON NEW SMOOTHER RJL K61
Edition: Model Aviation - 1982/04
Page Numbers: 56, 57, 126, 127, 130, 131, 132
Free Flight DURA TION Bob Meuser SYMPO 82 last call barely time get paper accepted 1982 NFFS Symposium Report Deadline April 1 hardship case perhaps can negotiate Editor Jim Bennett 324 Helfenstein Ave St Louis MO 63119 Laminar-flow airfoils FF7 usually reliable source has three-times FAI FF World Champ Thomas Koster has messing laminar-flow foils FAI Power models Hmnim Normally wed rather have turbulent flow upper surface least keep flow separating least glide climb laminar flow would blessing cut down drag again separation could cause large increases drag could occur both top bottom surfaces though lift essentially zero foil isnt shaped just right anything other classical infinitesimallythin flat plate Laminar flow during glide Perhaps very low lift coefficients means gliding fast isnt way normally play game minimum sink speed criterion glide flattens speed increases virtue lower profile drag coefficient perhaps can win game Lower lift coefficient means lower induced drag perhaps lower aspect ratios order means greater chord hence higher Reynolds number also increased higher flight speed higher Reynolds number gives lower skinfriction drag coefficient Characteristically lam mar flow foils have maximum-thickness point well aft Koster reported have wind tunnel disposal charac teristic thoroughness hes just liable come up new answer old problem Fuse-type engine timer use fuse de thermalizer timei- engine timer well problem past has find fuse material burned fast predict able burning speed Commercial dynamite fuse does exactly Kitco has introduced engine timer utilizing Kitco device simple affair cobbled up music wire aluminum tubing must well-anchored fuselage prevent being torn out being set up device cocked pushing wire spring side inserting stiff fuse hole tube fuse burns past wire wire snaps over pinch surgical-tubing fuel line pinch-off action quite positive fuse lit after engine started means punk consisting length Sig DT fuse Once fuse lit no turning off Pinching pliers dunking water wont little scary obviously potential danger involved can say about lot things especially half-horse power buzz saws put noses Gas models routine using fuse-timer should well rehearsed Installed weight 06 oz save about ver Tatone type timer few grams over modified Tomy Toy motor Price mechanism fuel tubing engine fuse bit DT fuse punk instructions $750 Order Kitco 4327 McDermed Houston TX 77035 Add 10% postage cure common flutter Wing flutter common problem FF competition classes has become severe Towline Gliders zoom-launch speeds have increased Increas ing torsional stiffness wing sheet covering boxed-in leading edge diagonal ribs always helps 56 Model Aviation Guess built Embyro Endurance model Dick Baxter designed it uses pull-pin landing gear retractershown herein December51 Issue Bill Warnerbuilt/photod Bob shouldnt called Embryo Duration event aunn waiter oesigneo hub all-odisa O-n pa bPUIL Ih1UUU nierniony WILfl UUbIfl PIflUIPIUb espoused C H Grant ModelAirplane News during mid-30s Uses Mattel electric motor IIII1F1 ILI7Q before/ / __ /fr -. 7TA /J-______ -— -------------/ __________________________7 I/i / - Lin& fti4sein _EQL22c& way stop wing after flutter Theres column 0 Kitcos new fuse-type engine timer Uses commercial dynamite fuse Bostonian event. nuvhEtze7ifjtn&tI2tn 5topped 3ohnTroIo I--A II/ EEh\\ m U /4 //iU iI i--i #terfrst painting. Confused Wait till read Bobs description paint checkerboard patterns model Its actually simple task U. Prasanta Banerjee India writing Theedges perhaps33 Calcuttan has taken new look some 10- toeven bailast along 15-year-old papers subject has triedthe LE Prasanta out what learned read wingsadded some diago structural mass distribution important thenal ribs forsecond parntit~ structural CGofthewingshouldbeweilforwardward part oldCt means stout leading edges light trailing Continued page 126 Li11tNT April 1982 57 AUEE Look Future Product DeveIopmen Full Command Systems Manufacturers EK Logitrol radios accessories py eai Dealer Inquiries Welcome Full Command Systems 9O8ERo sewood Spokane WA 99207 . 509 487-2122 414 90 1 r CaQtcg213 76 JIceceggoktcgPO BOX R/C GOODIES 192 S VAN NUYS CA 91408I month 3uvdia offering SPECIAL PRICES several accessory items RegularI 1prices shown small tvoe BARGAIN PRICES shown heavy typeI VCAPS$895UNIVERSAL SERVO TRAY Hi Visibility 2Color Caps I match 72 MHz Freq Specify size fits 5289 AIR-FLO HINGES21 tray Bantam Connon N OCE3 CE4 CE5 Futaba Kraft KPS12 Midget servos1 mcMtg hardware included C Q FREQUENCY FLAGS j 051 Golden Bee etc Uses Iron Hinges easy chable holder1 standard 1/432 glow pluginstall Strips 36 Ig polyester ribbons $209SMALL 1iLARGE 1 1/2All Frec colors $169$149 $169I Urn$2500$169$199 VISA ORParts Ship 7 Calif add Soles Tax Catalog 604 MORE US $1 70 Foreign Add 4-1/2% Visor Master Cordj heat desired Saran film may painted inside prior application Most spray paint will work will look like expensive factory-painted -glued Mylar films small fraction cost Scotch Monocoat will exclude moisture better before painting Since F&M Saran Wrap softer Mylar does tend get scuffed up bit making landings hard sufface such spots turn up easily repaired bit 5-mm epoxy smeared bad spot might instead put piece Mylar over spot Conclusions seems ridiculous believe piece flimsy highly-flexible easilysquashed piece foam could stiffened given enough strength addition mere paper glue become competitive model airplane begins cover long thin wing instance first thought handling delicate coat might might well try cover wet noodle once foam has taken its paper clothing undergoes transforma tion unlike metamorphosis David Banner turning Hulk say proof pudding eating What will such model competi tion date foam fleet has won nine trophies five contests using first-generation hardware SFC approach has now used success fully several types FF models including Hand-Launched Gliders P-30 Coupe Un limited Rubber models A-i Towline Gliders catapult gliders well classes AMA Gas 020s through Class D SFC natural CL Combat wings perhaps 45 models built far three RC tremendous potential also especially Quarter Scale beginners FF gas model using reed-valve 049 has built successfully tested almost lost third flight will subject follow-up article soon appear pages have recently discovered inherentlymore-efficient tapered wings can SFC-built slight increase time effort addition several layers silkspan usually required beef-up center thicker wider airfoil doing job instead results lighter overall model efficient well After years research development testing evaluation SFC concepts techniques convinced ever could eventually replace balsa wood long modelers approach open mind relative prices balsa foam reverse detailed SFC data special materials available directly author 3744 E Nye Lane Carson City NV 89701 Please send SASE inquiring FF Duration/Meuser Continued page 57 wing found formerly severe flutter problem virtually disappeared add ing diagonal ribs both increased torsional stiffness wing moved its CG forward difficult say effect turned trick Deluxe flufi~ dispenser use cattail fluffies thermal-detecting aid has become quite standard have habit making mess cute trick get upwind 126 Model Aviation Division B & B Industries Looking Hard Find Soaring Goodies Jfe &i4fane fT/acory o has complete comprehensive line R/G Soaring productstoeverexist North America o Our line products includesthosefrom some respected firms Europe well complete inventory own US manufacturers o We carry complete line Kits Hardware Accessories & Building Supplies have full inventory Launching Equipment & Related Products o We serve serious R/G soaring enthusiast supplies kits other items have sought long Call write today Free product listing & price sheet Sailplane Fcto717 244 4508 PO Box 34 Red Lion PA 173569am- 9pm EST PS Come see displays 1982 WRAMS & TOLEDO shows stripped-to-the-waist sweaty competitor blow fluffies over placebut really isnt very sporting avoid some mess modelers simply wrap cattails individu ally newspaper Rex Hinsons method reported FMA News seems especially neat Start ample supply plastic golf club tubes small waxed-paper cups cattails Cut off sections golf tube bit longer cat tail Poke hole cup put stem cattail through put cattail golf-tube section rubber-band cup over end tube Jubber-band another cup over other end ready use cattail remove second paper cup push part cattail out tube through pull unused part back tube can dropped ground stomped ridden over chase bikes making mess Painting checkerboard patterns Its easier might think easier to describe dont have draw guide lines whole pattern pair perpendicular guide lines anywhere pattern will suffice Youll need supply masking tape having right width cant buy exactly width want make yourself wider stuff using drafting board tee square hobby knife proceed follows 1 First paint background color 2 lay down strips tape horizontally edge edge 3 Remove second strip 4 Repeat steps 2 3 vertical strips tape 5 Paint now half finished 6 Remove vertical strips 7 Re place horizontal strips removed step 3 8 Remove horizontal strips removed step Continued page 130 April 1982 127 GLOWGONTIOLINI TEND PROFILE0COMBA 7RA T lireb PLUGSWIDE & NARROW WEDGE 6 oz C8pa cities UNIFLOW & ITINID S Blow Proof Seal Six Types 3 Heat Ranges Longer Life S Flash Starting Only $120 SWANSON PO Box 1Since 7948 Wayne NJ 07470 Custom Dliii Fish Ingredients detailed brochure send 50 cents CAROLINA TAFFINDER 8345 Delhi Road Charleston Hgts Sc 29405 Sport RIC Design / Distributors & -- Phone NOT JUST ANOTHER CATALOG novice tips experts expert thousands products specifica tions photos help decide make hobby enjoyable everybody interested R/C its standard reference book Will Ever Need Available through local hobby shop use coupon nd copy new RADIO CONTROL BUYERS GUIDE L Enclosed $950 $795 plus $155 postage US & canada dians send US funds VA residents add 4% sales tax EZ charge D Mastercharge D visa charge No_____________________ Exp Date _______________ Name Street city State Zip Return Boynton & Associates Inc clifton House clifton virginia 22024 v33][b248229601919600]] 3 9 Replace vertical strips remove removed step 4 10 Paint 11 Remove remaining tape 12 Admire knew Id manage make seem complicated following applies masking-anddoping job press down edges tape care fully being certain no places dope can seep under Paint coat clear dope seal edges just case previous job wasnt done perfectly apply colored dope Masking tape very sticky might ruin model getting stuff off four cures problent 1 Use drafting tape available artists supply stores instead masking tape 2 use masking tape before applying stick onto some slicksurface thin paper erasable bond paper works cut away leaving about 1/16in edges tape exposed 3 Always remove tape pulling parallel surface never perpendicular 4 Some say clean living helps cant vouch Bostonian events another Indoor event several forms has achieved some popularity rules Bostonian event flown East follows maximum pro jected wingspan 16 maximum chord 3 maximum prop diameter 6 power limited rubber motors minimum weight motors 7 grams maximum overall length prop 14 fuselage must con tain theoretical box measuring 1 Y2 x 2 x 3 larger longerons must support motor no motor-sticks fuselage must have forwardfacing windshield window side must have area least 1 sq landing gear must fixed two wheels least -in diam must rigid enough support model during hand-glide landing ROG takeoffs required Charisma factor judge rates model according model appeals him based construction neatness scalelike details uniqueness design etc 100 110 rating scale used An unlimited number flights allowed score total flight time best three flights multiplied charisma factor East Coasters seem happy 7-gram weight rule although far too light successful modelers build models lighter add ballast San Diego Orbiteers have added some modifications call event Bostonian West Minimum weight 14 grams Chord limit applies wing addition total wing area limit 48 sq makes pretty tough biplanes tandems forward windshield rule clarified projected frontal area counts Open-cockpit models required have side windows must have 1 sq side vision imaginary pilot turns out model made 1/16-square sticks plastic prop double-covered surfaces just about hits weight minimum nose add bit zest Orbiteer Walt Mooney added requirement meets models should carry pre-World War II military insignia maximum charisma factor 11 isnt much incentive add scalelike fea tures would detract flight duration Im saying bad greater factor say 12 would put emphasis scalelike features unusual confignrations full rating scale utilized would nothing everyone got scores between 1 18 120 Per sonally Id rather see length restriction deleted 130 Model Aviation Modelers Choice GMP EPOXIES High Quality Model Construction Jr Kwik Set 6 Minute 5 oz $550 Kwik Set 6 Minute 10 oz $995 Giant Kwik Set 6 Mm 16 oz $1295 Half Fast 10 Minute 10 oz $850 GMP AIRCRAFT INSTRUMENTS 80 3/16 1/4 3/8 1/2 $149 40 3/4 inch$149 TUFF STUFF FUEL LINE Three Feet Latex$ 98 Six Feet Latex$169 EASY OFF PULLER proper tool removing drive washers flywheels $795 net year deaiec erder direct Add $150 fer peateg & handling GAS MODEL PRODUCTS 8773 Russet Drive Cincinnati OH 45239 1513 3857398 another beginners class Well exactly Rather indoor event plastic-prop models maximum dimensions span length 24 Called P-24 event born Great Northwest best time far close five minutes Dave Hagen sent information event suggests better choice beginners event would have dimension limits 15- 20-in range would seem Novice Pennyplane AMA rules would fit bill plastic-prop requirement would bypass biggest hassle beginner However Dave further suggests models required ROG flat-blade sheetbalsa props permitted addition plastic props seems ROG requirement building landing gear pointless hassle permitting anything other plastic prop loses whole point further point favor plastic-prop Novice Pennyplane would once beginner got hang advancement AMA Novice Pennyplane would relatively painless step Indoor winder RMS Tooling has introduced winder having 161 ratio winding Indoor models similar size old metal-case Wilson winder understand no longer made has same ratio isnt smooth 201 winders Bob Wilder used make doesnt have turns counter Wilders did cost fifth much Wilder would have charge make winders today fully guaranteed retail price 1t$*$ INTRODUCTORY PRICE PLUS SHIPPING Tired walking WANT LAUNCH EVERY MINUTE ORDER SAILPLANE LAUNCH LINE RETRIEVAL SYSTEM LIGHTWEIGHT BUT HEAVY-DUTY DESIGN TO RETRIEVE ANY SYSTEM COMPLETE WITHBATTERY POWER CABLES HAND SWITCH CONTROL LINE GUIDE AND 1000 OF BRAIDED LINE DAVEY SYSTEMS April 1982 131 maximum length increased say 20 init would better match snazzylooking canards deltas sometimes build STEARMAN PT- 17 Offered Two Sizes Quadra 60 Quarter Scale Quadra type Engines 96' Span 2 Scale Far 60 Engines 64/ Span 1000 Sq Quarter Scale Plan Set $3250 2 Scale Plan $1850 Please a'ther designs Kits offered CORPORATION Wood Lane Malvern Pa19355 215644-0692 4 Gal Case %One or5GalCan 24 Gal Per Gal 575 650 750 800 825 985 1500 2400 126 Gal Per Gal 525 575 645 725 775 950 1400 2300 30 Gal Drum EA 9700 13300 16100 17800 19000 24200 36500 58200 54 Gal Drum EA 13500 19900 25000 28000 30000 39000 60000 97500 Prices subject change notice Free delivery 1 4 5 24 & 126 gal deals 30 & 54 gal drums freight collect FOB Clover SC Gallon price determined nitro content & total quantity ordered SC orders add 4% sales tax Add $250 COD package $100 maximum charge card & COD orders NEW Power Booster 1/4 scale eng $1 2O0/qt $3800/gal freight included Use 3 os/gal gas mix eAmerican made eSchnuerle ports eDouble ball bearing sPerry carburetor eForged & domed piston Forged & busheu con rod eQ-ring sealed back cover elnvestment cast crankcase Suggested Retail $14600 Muffler Included Kraft Engine Warranty Parts & Repair RJL INDUSTRIES PO sox 5654 PASADENA CA 91107 213 359-0016 795-9821 NEW Performance Fuel Higher RPM & longer runs easier starting good wear characteristics mixture properly set Use RED MAX price plus 10% SILKSPUN COVEPITE exclusive Hi-Lo Temperature Range prevents accidental warping greatest sheeted ft7 surfaces per sq ft i L PA 19044 $1195 dealer discounts five RM S Tooling 11370 ElDorado Ave San Fernando CA 91340 Bob Meuser 42eX Gregory St Oaklan4 CA 94619 FF Scale/Warner Continued page 59 Photos new photo service us like build planes 30s 40s now offering sample WACO 5 x 8 B/W catalog listing 3684 pix for$200 Sendto Hank Clark 7285 May St Ft Edward NY 12828 Yep Hank oaly draws em hes snapped plenty em too Edito Hank Jr now operates photo service Send hints tips especially de warping winders upcoming columns Bill Warner 423-C San VicenteBlvd Santa Monica CA 90402 Kids Petro Continued page 62 up turn climb vertically 45-deg eleva tion level applyfulIdown plane returns completed loop smoothly go full down medium up control plane will break out loop pull Out normal level altitude Practice high outside loop experience importantly determine plane aerodynamically capable tight outside turn may need change balance engine thrust line control linkages Sometimes new plane needed Part reason larger outside turn control handle setup normal sport flying handle set slight down angle like handle pistoL feels comfortable lets plane fly level groove nicely limits much wrist can pivot down set handle upright soup down wrist pivots equal hand no longer comfortable neutral position will have concentrate fly leveL Set up handle trim individual taste requirements grooving maneuvering What needed handle finger-actuated trim change feature Whos going invent Inverted flight youre still may second airplane Thats alright may get rid too next maneuver inverted flight prefer hold handle normally make movements very slowly first can see plane going way its supposed go up handle turns nose ground down handle turns nose top circle have remember up down down up Have helper hold upside down practice ground before attempting air first attempt should keep plane high allow room corrections fly inverted -lap will need Stunttype fuel tank keep engine running inverted Keep practicing until can stay inverted three level laps Pull-outs can made anywhere except windward quadrant circle Join AMA basic Stunt maneuvers low level inside outside loops wing-over inverted will make schoolyard ace 132 Model Aviation Gal 1050 1150 1250 1325 1400 1750 2500 3000 Per Gal 625 695 775 825 850 1025 1600 2600 Tour UlIOli 0 UdLO[ syiiiiiiiu ally UOlliOIlldLlOll 01 UdLOl duo ayuiirniiu oil Nitro 0% 5% 10% 12% 15% 25% 40% 60% Nobody does better Nnhndu dnpq ,hpanprCOMING SOON NEW SMOOTHER RJL K61
Edition: Model Aviation - 1982/04
Page Numbers: 56, 57, 126, 127, 130, 131, 132
Free Flight DURA TION Bob Meuser SYMPO 82 last call barely time get paper accepted 1982 NFFS Symposium Report Deadline April 1 hardship case perhaps can negotiate Editor Jim Bennett 324 Helfenstein Ave St Louis MO 63119 Laminar-flow airfoils FF7 usually reliable source has three-times FAI FF World Champ Thomas Koster has messing laminar-flow foils FAI Power models Hmnim Normally wed rather have turbulent flow upper surface least keep flow separating least glide climb laminar flow would blessing cut down drag again separation could cause large increases drag could occur both top bottom surfaces though lift essentially zero foil isnt shaped just right anything other classical infinitesimallythin flat plate Laminar flow during glide Perhaps very low lift coefficients means gliding fast isnt way normally play game minimum sink speed criterion glide flattens speed increases virtue lower profile drag coefficient perhaps can win game Lower lift coefficient means lower induced drag perhaps lower aspect ratios order means greater chord hence higher Reynolds number also increased higher flight speed higher Reynolds number gives lower skinfriction drag coefficient Characteristically lam mar flow foils have maximum-thickness point well aft Koster reported have wind tunnel disposal charac teristic thoroughness hes just liable come up new answer old problem Fuse-type engine timer use fuse de thermalizer timei- engine timer well problem past has find fuse material burned fast predict able burning speed Commercial dynamite fuse does exactly Kitco has introduced engine timer utilizing Kitco device simple affair cobbled up music wire aluminum tubing must well-anchored fuselage prevent being torn out being set up device cocked pushing wire spring side inserting stiff fuse hole tube fuse burns past wire wire snaps over pinch surgical-tubing fuel line pinch-off action quite positive fuse lit after engine started means punk consisting length Sig DT fuse Once fuse lit no turning off Pinching pliers dunking water wont little scary obviously potential danger involved can say about lot things especially half-horse power buzz saws put noses Gas models routine using fuse-timer should well rehearsed Installed weight 06 oz save about ver Tatone type timer few grams over modified Tomy Toy motor Price mechanism fuel tubing engine fuse bit DT fuse punk instructions $750 Order Kitco 4327 McDermed Houston TX 77035 Add 10% postage cure common flutter Wing flutter common problem FF competition classes has become severe Towline Gliders zoom-launch speeds have increased Increas ing torsional stiffness wing sheet covering boxed-in leading edge diagonal ribs always helps 56 Model Aviation Guess built Embyro Endurance model Dick Baxter designed it uses pull-pin landing gear retractershown herein December51 Issue Bill Warnerbuilt/photod Bob shouldnt called Embryo Duration event aunn waiter oesigneo hub all-odisa O-n pa bPUIL Ih1UUU nierniony WILfl UUbIfl PIflUIPIUb espoused C H Grant ModelAirplane News during mid-30s Uses Mattel electric motor IIII1F1 ILI7Q before/ / __ /fr -. 7TA /J-______ -— -------------/ __________________________7 I/i / - Lin& fti4sein _EQL22c& way stop wing after flutter Theres column 0 Kitcos new fuse-type engine timer Uses commercial dynamite fuse Bostonian event. nuvhEtze7ifjtn&tI2tn 5topped 3ohnTroIo I--A II/ EEh\\ m U /4 //iU iI i--i #terfrst painting. Confused Wait till read Bobs description paint checkerboard patterns model Its actually simple task U. Prasanta Banerjee India writing Theedges perhaps33 Calcuttan has taken new look some 10- toeven bailast along 15-year-old papers subject has triedthe LE Prasanta out what learned read wingsadded some diago structural mass distribution important thenal ribs forsecond parntit~ structural CGofthewingshouldbeweilforwardward part oldCt means stout leading edges light trailing Continued page 126 Li11tNT April 1982 57 AUEE Look Future Product DeveIopmen Full Command Systems Manufacturers EK Logitrol radios accessories py eai Dealer Inquiries Welcome Full Command Systems 9O8ERo sewood Spokane WA 99207 . 509 487-2122 414 90 1 r CaQtcg213 76 JIceceggoktcgPO BOX R/C GOODIES 192 S VAN NUYS CA 91408I month 3uvdia offering SPECIAL PRICES several accessory items RegularI 1prices shown small tvoe BARGAIN PRICES shown heavy typeI VCAPS$895UNIVERSAL SERVO TRAY Hi Visibility 2Color Caps I match 72 MHz Freq Specify size fits 5289 AIR-FLO HINGES21 tray Bantam Connon N OCE3 CE4 CE5 Futaba Kraft KPS12 Midget servos1 mcMtg hardware included C Q FREQUENCY FLAGS j 051 Golden Bee etc Uses Iron Hinges easy chable holder1 standard 1/432 glow pluginstall Strips 36 Ig polyester ribbons $209SMALL 1iLARGE 1 1/2All Frec colors $169$149 $169I Urn$2500$169$199 VISA ORParts Ship 7 Calif add Soles Tax Catalog 604 MORE US $1 70 Foreign Add 4-1/2% Visor Master Cordj heat desired Saran film may painted inside prior application Most spray paint will work will look like expensive factory-painted -glued Mylar films small fraction cost Scotch Monocoat will exclude moisture better before painting Since F&M Saran Wrap softer Mylar does tend get scuffed up bit making landings hard sufface such spots turn up easily repaired bit 5-mm epoxy smeared bad spot might instead put piece Mylar over spot Conclusions seems ridiculous believe piece flimsy highly-flexible easilysquashed piece foam could stiffened given enough strength addition mere paper glue become competitive model airplane begins cover long thin wing instance first thought handling delicate coat might might well try cover wet noodle once foam has taken its paper clothing undergoes transforma tion unlike metamorphosis David Banner turning Hulk say proof pudding eating What will such model competi tion date foam fleet has won nine trophies five contests using first-generation hardware SFC approach has now used success fully several types FF models including Hand-Launched Gliders P-30 Coupe Un limited Rubber models A-i Towline Gliders catapult gliders well classes AMA Gas 020s through Class D SFC natural CL Combat wings perhaps 45 models built far three RC tremendous potential also especially Quarter Scale beginners FF gas model using reed-valve 049 has built successfully tested almost lost third flight will subject follow-up article soon appear pages have recently discovered inherentlymore-efficient tapered wings can SFC-built slight increase time effort addition several layers silkspan usually required beef-up center thicker wider airfoil doing job instead results lighter overall model efficient well After years research development testing evaluation SFC concepts techniques convinced ever could eventually replace balsa wood long modelers approach open mind relative prices balsa foam reverse detailed SFC data special materials available directly author 3744 E Nye Lane Carson City NV 89701 Please send SASE inquiring FF Duration/Meuser Continued page 57 wing found formerly severe flutter problem virtually disappeared add ing diagonal ribs both increased torsional stiffness wing moved its CG forward difficult say effect turned trick Deluxe flufi~ dispenser use cattail fluffies thermal-detecting aid has become quite standard have habit making mess cute trick get upwind 126 Model Aviation Division B & B Industries Looking Hard Find Soaring Goodies Jfe &i4fane fT/acory o has complete comprehensive line R/G Soaring productstoeverexist North America o Our line products includesthosefrom some respected firms Europe well complete inventory own US manufacturers o We carry complete line Kits Hardware Accessories & Building Supplies have full inventory Launching Equipment & Related Products o We serve serious R/G soaring enthusiast supplies kits other items have sought long Call write today Free product listing & price sheet Sailplane Fcto717 244 4508 PO Box 34 Red Lion PA 173569am- 9pm EST PS Come see displays 1982 WRAMS & TOLEDO shows stripped-to-the-waist sweaty competitor blow fluffies over placebut really isnt very sporting avoid some mess modelers simply wrap cattails individu ally newspaper Rex Hinsons method reported FMA News seems especially neat Start ample supply plastic golf club tubes small waxed-paper cups cattails Cut off sections golf tube bit longer cat tail Poke hole cup put stem cattail through put cattail golf-tube section rubber-band cup over end tube Jubber-band another cup over other end ready use cattail remove second paper cup push part cattail out tube through pull unused part back tube can dropped ground stomped ridden over chase bikes making mess Painting checkerboard patterns Its easier might think easier to describe dont have draw guide lines whole pattern pair perpendicular guide lines anywhere pattern will suffice Youll need supply masking tape having right width cant buy exactly width want make yourself wider stuff using drafting board tee square hobby knife proceed follows 1 First paint background color 2 lay down strips tape horizontally edge edge 3 Remove second strip 4 Repeat steps 2 3 vertical strips tape 5 Paint now half finished 6 Remove vertical strips 7 Re place horizontal strips removed step 3 8 Remove horizontal strips removed step Continued page 130 April 1982 127 GLOWGONTIOLINI TEND PROFILE0COMBA 7RA T lireb PLUGSWIDE & NARROW WEDGE 6 oz C8pa cities UNIFLOW & ITINID S Blow Proof Seal Six Types 3 Heat Ranges Longer Life S Flash Starting Only $120 SWANSON PO Box 1Since 7948 Wayne NJ 07470 Custom Dliii Fish Ingredients detailed brochure send 50 cents CAROLINA TAFFINDER 8345 Delhi Road Charleston Hgts Sc 29405 Sport RIC Design / Distributors & -- Phone NOT JUST ANOTHER CATALOG novice tips experts expert thousands products specifica tions photos help decide make hobby enjoyable everybody interested R/C its standard reference book Will Ever Need Available through local hobby shop use coupon nd copy new RADIO CONTROL BUYERS GUIDE L Enclosed $950 $795 plus $155 postage US & canada dians send US funds VA residents add 4% sales tax EZ charge D Mastercharge D visa charge No_____________________ Exp Date _______________ Name Street city State Zip Return Boynton & Associates Inc clifton House clifton virginia 22024 v33][b248229601919600]] 3 9 Replace vertical strips remove removed step 4 10 Paint 11 Remove remaining tape 12 Admire knew Id manage make seem complicated following applies masking-anddoping job press down edges tape care fully being certain no places dope can seep under Paint coat clear dope seal edges just case previous job wasnt done perfectly apply colored dope Masking tape very sticky might ruin model getting stuff off four cures problent 1 Use drafting tape available artists supply stores instead masking tape 2 use masking tape before applying stick onto some slicksurface thin paper erasable bond paper works cut away leaving about 1/16in edges tape exposed 3 Always remove tape pulling parallel surface never perpendicular 4 Some say clean living helps cant vouch Bostonian events another Indoor event several forms has achieved some popularity rules Bostonian event flown East follows maximum pro jected wingspan 16 maximum chord 3 maximum prop diameter 6 power limited rubber motors minimum weight motors 7 grams maximum overall length prop 14 fuselage must con tain theoretical box measuring 1 Y2 x 2 x 3 larger longerons must support motor no motor-sticks fuselage must have forwardfacing windshield window side must have area least 1 sq landing gear must fixed two wheels least -in diam must rigid enough support model during hand-glide landing ROG takeoffs required Charisma factor judge rates model according model appeals him based construction neatness scalelike details uniqueness design etc 100 110 rating scale used An unlimited number flights allowed score total flight time best three flights multiplied charisma factor East Coasters seem happy 7-gram weight rule although far too light successful modelers build models lighter add ballast San Diego Orbiteers have added some modifications call event Bostonian West Minimum weight 14 grams Chord limit applies wing addition total wing area limit 48 sq makes pretty tough biplanes tandems forward windshield rule clarified projected frontal area counts Open-cockpit models required have side windows must have 1 sq side vision imaginary pilot turns out model made 1/16-square sticks plastic prop double-covered surfaces just about hits weight minimum nose add bit zest Orbiteer Walt Mooney added requirement meets models should carry pre-World War II military insignia maximum charisma factor 11 isnt much incentive add scalelike fea tures would detract flight duration Im saying bad greater factor say 12 would put emphasis scalelike features unusual confignrations full rating scale utilized would nothing everyone got scores between 1 18 120 Per sonally Id rather see length restriction deleted 130 Model Aviation Modelers Choice GMP EPOXIES High Quality Model Construction Jr Kwik Set 6 Minute 5 oz $550 Kwik Set 6 Minute 10 oz $995 Giant Kwik Set 6 Mm 16 oz $1295 Half Fast 10 Minute 10 oz $850 GMP AIRCRAFT INSTRUMENTS 80 3/16 1/4 3/8 1/2 $149 40 3/4 inch$149 TUFF STUFF FUEL LINE Three Feet Latex$ 98 Six Feet Latex$169 EASY OFF PULLER proper tool removing drive washers flywheels $795 net year deaiec erder direct Add $150 fer peateg & handling GAS MODEL PRODUCTS 8773 Russet Drive Cincinnati OH 45239 1513 3857398 another beginners class Well exactly Rather indoor event plastic-prop models maximum dimensions span length 24 Called P-24 event born Great Northwest best time far close five minutes Dave Hagen sent information event suggests better choice beginners event would have dimension limits 15- 20-in range would seem Novice Pennyplane AMA rules would fit bill plastic-prop requirement would bypass biggest hassle beginner However Dave further suggests models required ROG flat-blade sheetbalsa props permitted addition plastic props seems ROG requirement building landing gear pointless hassle permitting anything other plastic prop loses whole point further point favor plastic-prop Novice Pennyplane would once beginner got hang advancement AMA Novice Pennyplane would relatively painless step Indoor winder RMS Tooling has introduced winder having 161 ratio winding Indoor models similar size old metal-case Wilson winder understand no longer made has same ratio isnt smooth 201 winders Bob Wilder used make doesnt have turns counter Wilders did cost fifth much Wilder would have charge make winders today fully guaranteed retail price 1t$*$ INTRODUCTORY PRICE PLUS SHIPPING Tired walking WANT LAUNCH EVERY MINUTE ORDER SAILPLANE LAUNCH LINE RETRIEVAL SYSTEM LIGHTWEIGHT BUT HEAVY-DUTY DESIGN TO RETRIEVE ANY SYSTEM COMPLETE WITHBATTERY POWER CABLES HAND SWITCH CONTROL LINE GUIDE AND 1000 OF BRAIDED LINE DAVEY SYSTEMS April 1982 131 maximum length increased say 20 init would better match snazzylooking canards deltas sometimes build STEARMAN PT- 17 Offered Two Sizes Quadra 60 Quarter Scale Quadra type Engines 96' Span 2 Scale Far 60 Engines 64/ Span 1000 Sq Quarter Scale Plan Set $3250 2 Scale Plan $1850 Please a'ther designs Kits offered CORPORATION Wood Lane Malvern Pa19355 215644-0692 4 Gal Case %One or5GalCan 24 Gal Per Gal 575 650 750 800 825 985 1500 2400 126 Gal Per Gal 525 575 645 725 775 950 1400 2300 30 Gal Drum EA 9700 13300 16100 17800 19000 24200 36500 58200 54 Gal Drum EA 13500 19900 25000 28000 30000 39000 60000 97500 Prices subject change notice Free delivery 1 4 5 24 & 126 gal deals 30 & 54 gal drums freight collect FOB Clover SC Gallon price determined nitro content & total quantity ordered SC orders add 4% sales tax Add $250 COD package $100 maximum charge card & COD orders NEW Power Booster 1/4 scale eng $1 2O0/qt $3800/gal freight included Use 3 os/gal gas mix eAmerican made eSchnuerle ports eDouble ball bearing sPerry carburetor eForged & domed piston Forged & busheu con rod eQ-ring sealed back cover elnvestment cast crankcase Suggested Retail $14600 Muffler Included Kraft Engine Warranty Parts & Repair RJL INDUSTRIES PO sox 5654 PASADENA CA 91107 213 359-0016 795-9821 NEW Performance Fuel Higher RPM & longer runs easier starting good wear characteristics mixture properly set Use RED MAX price plus 10% SILKSPUN COVEPITE exclusive Hi-Lo Temperature Range prevents accidental warping greatest sheeted ft7 surfaces per sq ft i L PA 19044 $1195 dealer discounts five RM S Tooling 11370 ElDorado Ave San Fernando CA 91340 Bob Meuser 42eX Gregory St Oaklan4 CA 94619 FF Scale/Warner Continued page 59 Photos new photo service us like build planes 30s 40s now offering sample WACO 5 x 8 B/W catalog listing 3684 pix for$200 Sendto Hank Clark 7285 May St Ft Edward NY 12828 Yep Hank oaly draws em hes snapped plenty em too Edito Hank Jr now operates photo service Send hints tips especially de warping winders upcoming columns Bill Warner 423-C San VicenteBlvd Santa Monica CA 90402 Kids Petro Continued page 62 up turn climb vertically 45-deg eleva tion level applyfulIdown plane returns completed loop smoothly go full down medium up control plane will break out loop pull Out normal level altitude Practice high outside loop experience importantly determine plane aerodynamically capable tight outside turn may need change balance engine thrust line control linkages Sometimes new plane needed Part reason larger outside turn control handle setup normal sport flying handle set slight down angle like handle pistoL feels comfortable lets plane fly level groove nicely limits much wrist can pivot down set handle upright soup down wrist pivots equal hand no longer comfortable neutral position will have concentrate fly leveL Set up handle trim individual taste requirements grooving maneuvering What needed handle finger-actuated trim change feature Whos going invent Inverted flight youre still may second airplane Thats alright may get rid too next maneuver inverted flight prefer hold handle normally make movements very slowly first can see plane going way its supposed go up handle turns nose ground down handle turns nose top circle have remember up down down up Have helper hold upside down practice ground before attempting air first attempt should keep plane high allow room corrections fly inverted -lap will need Stunttype fuel tank keep engine running inverted Keep practicing until can stay inverted three level laps Pull-outs can made anywhere except windward quadrant circle Join AMA basic Stunt maneuvers low level inside outside loops wing-over inverted will make schoolyard ace 132 Model Aviation Gal 1050 1150 1250 1325 1400 1750 2500 3000 Per Gal 625 695 775 825 850 1025 1600 2600 Tour UlIOli 0 UdLO[ syiiiiiiiu ally UOlliOIlldLlOll 01 UdLOl duo ayuiirniiu oil Nitro 0% 5% 10% 12% 15% 25% 40% 60% Nobody does better Nnhndu dnpq ,hpanprCOMING SOON NEW SMOOTHER RJL K61
Edition: Model Aviation - 1982/04
Page Numbers: 56, 57, 126, 127, 130, 131, 132
Free Flight DURA TION Bob Meuser SYMPO 82 last call barely time get paper accepted 1982 NFFS Symposium Report Deadline April 1 hardship case perhaps can negotiate Editor Jim Bennett 324 Helfenstein Ave St Louis MO 63119 Laminar-flow airfoils FF7 usually reliable source has three-times FAI FF World Champ Thomas Koster has messing laminar-flow foils FAI Power models Hmnim Normally wed rather have turbulent flow upper surface least keep flow separating least glide climb laminar flow would blessing cut down drag again separation could cause large increases drag could occur both top bottom surfaces though lift essentially zero foil isnt shaped just right anything other classical infinitesimallythin flat plate Laminar flow during glide Perhaps very low lift coefficients means gliding fast isnt way normally play game minimum sink speed criterion glide flattens speed increases virtue lower profile drag coefficient perhaps can win game Lower lift coefficient means lower induced drag perhaps lower aspect ratios order means greater chord hence higher Reynolds number also increased higher flight speed higher Reynolds number gives lower skinfriction drag coefficient Characteristically lam mar flow foils have maximum-thickness point well aft Koster reported have wind tunnel disposal charac teristic thoroughness hes just liable come up new answer old problem Fuse-type engine timer use fuse de thermalizer timei- engine timer well problem past has find fuse material burned fast predict able burning speed Commercial dynamite fuse does exactly Kitco has introduced engine timer utilizing Kitco device simple affair cobbled up music wire aluminum tubing must well-anchored fuselage prevent being torn out being set up device cocked pushing wire spring side inserting stiff fuse hole tube fuse burns past wire wire snaps over pinch surgical-tubing fuel line pinch-off action quite positive fuse lit after engine started means punk consisting length Sig DT fuse Once fuse lit no turning off Pinching pliers dunking water wont little scary obviously potential danger involved can say about lot things especially half-horse power buzz saws put noses Gas models routine using fuse-timer should well rehearsed Installed weight 06 oz save about ver Tatone type timer few grams over modified Tomy Toy motor Price mechanism fuel tubing engine fuse bit DT fuse punk instructions $750 Order Kitco 4327 McDermed Houston TX 77035 Add 10% postage cure common flutter Wing flutter common problem FF competition classes has become severe Towline Gliders zoom-launch speeds have increased Increas ing torsional stiffness wing sheet covering boxed-in leading edge diagonal ribs always helps 56 Model Aviation Guess built Embyro Endurance model Dick Baxter designed it uses pull-pin landing gear retractershown herein December51 Issue Bill Warnerbuilt/photod Bob shouldnt called Embryo Duration event aunn waiter oesigneo hub all-odisa O-n pa bPUIL Ih1UUU nierniony WILfl UUbIfl PIflUIPIUb espoused C H Grant ModelAirplane News during mid-30s Uses Mattel electric motor IIII1F1 ILI7Q before/ / __ /fr -. 7TA /J-______ -— -------------/ __________________________7 I/i / - Lin& fti4sein _EQL22c& way stop wing after flutter Theres column 0 Kitcos new fuse-type engine timer Uses commercial dynamite fuse Bostonian event. nuvhEtze7ifjtn&tI2tn 5topped 3ohnTroIo I--A II/ EEh\\ m U /4 //iU iI i--i #terfrst painting. Confused Wait till read Bobs description paint checkerboard patterns model Its actually simple task U. Prasanta Banerjee India writing Theedges perhaps33 Calcuttan has taken new look some 10- toeven bailast along 15-year-old papers subject has triedthe LE Prasanta out what learned read wingsadded some diago structural mass distribution important thenal ribs forsecond parntit~ structural CGofthewingshouldbeweilforwardward part oldCt means stout leading edges light trailing Continued page 126 Li11tNT April 1982 57 AUEE Look Future Product DeveIopmen Full Command Systems Manufacturers EK Logitrol radios accessories py eai Dealer Inquiries Welcome Full Command Systems 9O8ERo sewood Spokane WA 99207 . 509 487-2122 414 90 1 r CaQtcg213 76 JIceceggoktcgPO BOX R/C GOODIES 192 S VAN NUYS CA 91408I month 3uvdia offering SPECIAL PRICES several accessory items RegularI 1prices shown small tvoe BARGAIN PRICES shown heavy typeI VCAPS$895UNIVERSAL SERVO TRAY Hi Visibility 2Color Caps I match 72 MHz Freq Specify size fits 5289 AIR-FLO HINGES21 tray Bantam Connon N OCE3 CE4 CE5 Futaba Kraft KPS12 Midget servos1 mcMtg hardware included C Q FREQUENCY FLAGS j 051 Golden Bee etc Uses Iron Hinges easy chable holder1 standard 1/432 glow pluginstall Strips 36 Ig polyester ribbons $209SMALL 1iLARGE 1 1/2All Frec colors $169$149 $169I Urn$2500$169$199 VISA ORParts Ship 7 Calif add Soles Tax Catalog 604 MORE US $1 70 Foreign Add 4-1/2% Visor Master Cordj heat desired Saran film may painted inside prior application Most spray paint will work will look like expensive factory-painted -glued Mylar films small fraction cost Scotch Monocoat will exclude moisture better before painting Since F&M Saran Wrap softer Mylar does tend get scuffed up bit making landings hard sufface such spots turn up easily repaired bit 5-mm epoxy smeared bad spot might instead put piece Mylar over spot Conclusions seems ridiculous believe piece flimsy highly-flexible easilysquashed piece foam could stiffened given enough strength addition mere paper glue become competitive model airplane begins cover long thin wing instance first thought handling delicate coat might might well try cover wet noodle once foam has taken its paper clothing undergoes transforma tion unlike metamorphosis David Banner turning Hulk say proof pudding eating What will such model competi tion date foam fleet has won nine trophies five contests using first-generation hardware SFC approach has now used success fully several types FF models including Hand-Launched Gliders P-30 Coupe Un limited Rubber models A-i Towline Gliders catapult gliders well classes AMA Gas 020s through Class D SFC natural CL Combat wings perhaps 45 models built far three RC tremendous potential also especially Quarter Scale beginners FF gas model using reed-valve 049 has built successfully tested almost lost third flight will subject follow-up article soon appear pages have recently discovered inherentlymore-efficient tapered wings can SFC-built slight increase time effort addition several layers silkspan usually required beef-up center thicker wider airfoil doing job instead results lighter overall model efficient well After years research development testing evaluation SFC concepts techniques convinced ever could eventually replace balsa wood long modelers approach open mind relative prices balsa foam reverse detailed SFC data special materials available directly author 3744 E Nye Lane Carson City NV 89701 Please send SASE inquiring FF Duration/Meuser Continued page 57 wing found formerly severe flutter problem virtually disappeared add ing diagonal ribs both increased torsional stiffness wing moved its CG forward difficult say effect turned trick Deluxe flufi~ dispenser use cattail fluffies thermal-detecting aid has become quite standard have habit making mess cute trick get upwind 126 Model Aviation Division B & B Industries Looking Hard Find Soaring Goodies Jfe &i4fane fT/acory o has complete comprehensive line R/G Soaring productstoeverexist North America o Our line products includesthosefrom some respected firms Europe well complete inventory own US manufacturers o We carry complete line Kits Hardware Accessories & Building Supplies have full inventory Launching Equipment & Related Products o We serve serious R/G soaring enthusiast supplies kits other items have sought long Call write today Free product listing & price sheet Sailplane Fcto717 244 4508 PO Box 34 Red Lion PA 173569am- 9pm EST PS Come see displays 1982 WRAMS & TOLEDO shows stripped-to-the-waist sweaty competitor blow fluffies over placebut really isnt very sporting avoid some mess modelers simply wrap cattails individu ally newspaper Rex Hinsons method reported FMA News seems especially neat Start ample supply plastic golf club tubes small waxed-paper cups cattails Cut off sections golf tube bit longer cat tail Poke hole cup put stem cattail through put cattail golf-tube section rubber-band cup over end tube Jubber-band another cup over other end ready use cattail remove second paper cup push part cattail out tube through pull unused part back tube can dropped ground stomped ridden over chase bikes making mess Painting checkerboard patterns Its easier might think easier to describe dont have draw guide lines whole pattern pair perpendicular guide lines anywhere pattern will suffice Youll need supply masking tape having right width cant buy exactly width want make yourself wider stuff using drafting board tee square hobby knife proceed follows 1 First paint background color 2 lay down strips tape horizontally edge edge 3 Remove second strip 4 Repeat steps 2 3 vertical strips tape 5 Paint now half finished 6 Remove vertical strips 7 Re place horizontal strips removed step 3 8 Remove horizontal strips removed step Continued page 130 April 1982 127 GLOWGONTIOLINI TEND PROFILE0COMBA 7RA T lireb PLUGSWIDE & NARROW WEDGE 6 oz C8pa cities UNIFLOW & ITINID S Blow Proof Seal Six Types 3 Heat Ranges Longer Life S Flash Starting Only $120 SWANSON PO Box 1Since 7948 Wayne NJ 07470 Custom Dliii Fish Ingredients detailed brochure send 50 cents CAROLINA TAFFINDER 8345 Delhi Road Charleston Hgts Sc 29405 Sport RIC Design / Distributors & -- Phone NOT JUST ANOTHER CATALOG novice tips experts expert thousands products specifica tions photos help decide make hobby enjoyable everybody interested R/C its standard reference book Will Ever Need Available through local hobby shop use coupon nd copy new RADIO CONTROL BUYERS GUIDE L Enclosed $950 $795 plus $155 postage US & canada dians send US funds VA residents add 4% sales tax EZ charge D Mastercharge D visa charge No_____________________ Exp Date _______________ Name Street city State Zip Return Boynton & Associates Inc clifton House clifton virginia 22024 v33][b248229601919600]] 3 9 Replace vertical strips remove removed step 4 10 Paint 11 Remove remaining tape 12 Admire knew Id manage make seem complicated following applies masking-anddoping job press down edges tape care fully being certain no places dope can seep under Paint coat clear dope seal edges just case previous job wasnt done perfectly apply colored dope Masking tape very sticky might ruin model getting stuff off four cures problent 1 Use drafting tape available artists supply stores instead masking tape 2 use masking tape before applying stick onto some slicksurface thin paper erasable bond paper works cut away leaving about 1/16in edges tape exposed 3 Always remove tape pulling parallel surface never perpendicular 4 Some say clean living helps cant vouch Bostonian events another Indoor event several forms has achieved some popularity rules Bostonian event flown East follows maximum pro jected wingspan 16 maximum chord 3 maximum prop diameter 6 power limited rubber motors minimum weight motors 7 grams maximum overall length prop 14 fuselage must con tain theoretical box measuring 1 Y2 x 2 x 3 larger longerons must support motor no motor-sticks fuselage must have forwardfacing windshield window side must have area least 1 sq landing gear must fixed two wheels least -in diam must rigid enough support model during hand-glide landing ROG takeoffs required Charisma factor judge rates model according model appeals him based construction neatness scalelike details uniqueness design etc 100 110 rating scale used An unlimited number flights allowed score total flight time best three flights multiplied charisma factor East Coasters seem happy 7-gram weight rule although far too light successful modelers build models lighter add ballast San Diego Orbiteers have added some modifications call event Bostonian West Minimum weight 14 grams Chord limit applies wing addition total wing area limit 48 sq makes pretty tough biplanes tandems forward windshield rule clarified projected frontal area counts Open-cockpit models required have side windows must have 1 sq side vision imaginary pilot turns out model made 1/16-square sticks plastic prop double-covered surfaces just about hits weight minimum nose add bit zest Orbiteer Walt Mooney added requirement meets models should carry pre-World War II military insignia maximum charisma factor 11 isnt much incentive add scalelike fea tures would detract flight duration Im saying bad greater factor say 12 would put emphasis scalelike features unusual confignrations full rating scale utilized would nothing everyone got scores between 1 18 120 Per sonally Id rather see length restriction deleted 130 Model Aviation Modelers Choice GMP EPOXIES High Quality Model Construction Jr Kwik Set 6 Minute 5 oz $550 Kwik Set 6 Minute 10 oz $995 Giant Kwik Set 6 Mm 16 oz $1295 Half Fast 10 Minute 10 oz $850 GMP AIRCRAFT INSTRUMENTS 80 3/16 1/4 3/8 1/2 $149 40 3/4 inch$149 TUFF STUFF FUEL LINE Three Feet Latex$ 98 Six Feet Latex$169 EASY OFF PULLER proper tool removing drive washers flywheels $795 net year deaiec erder direct Add $150 fer peateg & handling GAS MODEL PRODUCTS 8773 Russet Drive Cincinnati OH 45239 1513 3857398 another beginners class Well exactly Rather indoor event plastic-prop models maximum dimensions span length 24 Called P-24 event born Great Northwest best time far close five minutes Dave Hagen sent information event suggests better choice beginners event would have dimension limits 15- 20-in range would seem Novice Pennyplane AMA rules would fit bill plastic-prop requirement would bypass biggest hassle beginner However Dave further suggests models required ROG flat-blade sheetbalsa props permitted addition plastic props seems ROG requirement building landing gear pointless hassle permitting anything other plastic prop loses whole point further point favor plastic-prop Novice Pennyplane would once beginner got hang advancement AMA Novice Pennyplane would relatively painless step Indoor winder RMS Tooling has introduced winder having 161 ratio winding Indoor models similar size old metal-case Wilson winder understand no longer made has same ratio isnt smooth 201 winders Bob Wilder used make doesnt have turns counter Wilders did cost fifth much Wilder would have charge make winders today fully guaranteed retail price 1t$*$ INTRODUCTORY PRICE PLUS SHIPPING Tired walking WANT LAUNCH EVERY MINUTE ORDER SAILPLANE LAUNCH LINE RETRIEVAL SYSTEM LIGHTWEIGHT BUT HEAVY-DUTY DESIGN TO RETRIEVE ANY SYSTEM COMPLETE WITHBATTERY POWER CABLES HAND SWITCH CONTROL LINE GUIDE AND 1000 OF BRAIDED LINE DAVEY SYSTEMS April 1982 131 maximum length increased say 20 init would better match snazzylooking canards deltas sometimes build STEARMAN PT- 17 Offered Two Sizes Quadra 60 Quarter Scale Quadra type Engines 96' Span 2 Scale Far 60 Engines 64/ Span 1000 Sq Quarter Scale Plan Set $3250 2 Scale Plan $1850 Please a'ther designs Kits offered CORPORATION Wood Lane Malvern Pa19355 215644-0692 4 Gal Case %One or5GalCan 24 Gal Per Gal 575 650 750 800 825 985 1500 2400 126 Gal Per Gal 525 575 645 725 775 950 1400 2300 30 Gal Drum EA 9700 13300 16100 17800 19000 24200 36500 58200 54 Gal Drum EA 13500 19900 25000 28000 30000 39000 60000 97500 Prices subject change notice Free delivery 1 4 5 24 & 126 gal deals 30 & 54 gal drums freight collect FOB Clover SC Gallon price determined nitro content & total quantity ordered SC orders add 4% sales tax Add $250 COD package $100 maximum charge card & COD orders NEW Power Booster 1/4 scale eng $1 2O0/qt $3800/gal freight included Use 3 os/gal gas mix eAmerican made eSchnuerle ports eDouble ball bearing sPerry carburetor eForged & domed piston Forged & busheu con rod eQ-ring sealed back cover elnvestment cast crankcase Suggested Retail $14600 Muffler Included Kraft Engine Warranty Parts & Repair RJL INDUSTRIES PO sox 5654 PASADENA CA 91107 213 359-0016 795-9821 NEW Performance Fuel Higher RPM & longer runs easier starting good wear characteristics mixture properly set Use RED MAX price plus 10% SILKSPUN COVEPITE exclusive Hi-Lo Temperature Range prevents accidental warping greatest sheeted ft7 surfaces per sq ft i L PA 19044 $1195 dealer discounts five RM S Tooling 11370 ElDorado Ave San Fernando CA 91340 Bob Meuser 42eX Gregory St Oaklan4 CA 94619 FF Scale/Warner Continued page 59 Photos new photo service us like build planes 30s 40s now offering sample WACO 5 x 8 B/W catalog listing 3684 pix for$200 Sendto Hank Clark 7285 May St Ft Edward NY 12828 Yep Hank oaly draws em hes snapped plenty em too Edito Hank Jr now operates photo service Send hints tips especially de warping winders upcoming columns Bill Warner 423-C San VicenteBlvd Santa Monica CA 90402 Kids Petro Continued page 62 up turn climb vertically 45-deg eleva tion level applyfulIdown plane returns completed loop smoothly go full down medium up control plane will break out loop pull Out normal level altitude Practice high outside loop experience importantly determine plane aerodynamically capable tight outside turn may need change balance engine thrust line control linkages Sometimes new plane needed Part reason larger outside turn control handle setup normal sport flying handle set slight down angle like handle pistoL feels comfortable lets plane fly level groove nicely limits much wrist can pivot down set handle upright soup down wrist pivots equal hand no longer comfortable neutral position will have concentrate fly leveL Set up handle trim individual taste requirements grooving maneuvering What needed handle finger-actuated trim change feature Whos going invent Inverted flight youre still may second airplane Thats alright may get rid too next maneuver inverted flight prefer hold handle normally make movements very slowly first can see plane going way its supposed go up handle turns nose ground down handle turns nose top circle have remember up down down up Have helper hold upside down practice ground before attempting air first attempt should keep plane high allow room corrections fly inverted -lap will need Stunttype fuel tank keep engine running inverted Keep practicing until can stay inverted three level laps Pull-outs can made anywhere except windward quadrant circle Join AMA basic Stunt maneuvers low level inside outside loops wing-over inverted will make schoolyard ace 132 Model Aviation Gal 1050 1150 1250 1325 1400 1750 2500 3000 Per Gal 625 695 775 825 850 1025 1600 2600 Tour UlIOli 0 UdLO[ syiiiiiiiu ally UOlliOIlldLlOll 01 UdLOl duo ayuiirniiu oil Nitro 0% 5% 10% 12% 15% 25% 40% 60% Nobody does better Nnhndu dnpq ,hpanprCOMING SOON NEW SMOOTHER RJL K61
Edition: Model Aviation - 1982/04
Page Numbers: 56, 57, 126, 127, 130, 131, 132
Free Flight DURA TION Bob Meuser SYMPO 82 last call barely time get paper accepted 1982 NFFS Symposium Report Deadline April 1 hardship case perhaps can negotiate Editor Jim Bennett 324 Helfenstein Ave St Louis MO 63119 Laminar-flow airfoils FF7 usually reliable source has three-times FAI FF World Champ Thomas Koster has messing laminar-flow foils FAI Power models Hmnim Normally wed rather have turbulent flow upper surface least keep flow separating least glide climb laminar flow would blessing cut down drag again separation could cause large increases drag could occur both top bottom surfaces though lift essentially zero foil isnt shaped just right anything other classical infinitesimallythin flat plate Laminar flow during glide Perhaps very low lift coefficients means gliding fast isnt way normally play game minimum sink speed criterion glide flattens speed increases virtue lower profile drag coefficient perhaps can win game Lower lift coefficient means lower induced drag perhaps lower aspect ratios order means greater chord hence higher Reynolds number also increased higher flight speed higher Reynolds number gives lower skinfriction drag coefficient Characteristically lam mar flow foils have maximum-thickness point well aft Koster reported have wind tunnel disposal charac teristic thoroughness hes just liable come up new answer old problem Fuse-type engine timer use fuse de thermalizer timei- engine timer well problem past has find fuse material burned fast predict able burning speed Commercial dynamite fuse does exactly Kitco has introduced engine timer utilizing Kitco device simple affair cobbled up music wire aluminum tubing must well-anchored fuselage prevent being torn out being set up device cocked pushing wire spring side inserting stiff fuse hole tube fuse burns past wire wire snaps over pinch surgical-tubing fuel line pinch-off action quite positive fuse lit after engine started means punk consisting length Sig DT fuse Once fuse lit no turning off Pinching pliers dunking water wont little scary obviously potential danger involved can say about lot things especially half-horse power buzz saws put noses Gas models routine using fuse-timer should well rehearsed Installed weight 06 oz save about ver Tatone type timer few grams over modified Tomy Toy motor Price mechanism fuel tubing engine fuse bit DT fuse punk instructions $750 Order Kitco 4327 McDermed Houston TX 77035 Add 10% postage cure common flutter Wing flutter common problem FF competition classes has become severe Towline Gliders zoom-launch speeds have increased Increas ing torsional stiffness wing sheet covering boxed-in leading edge diagonal ribs always helps 56 Model Aviation Guess built Embyro Endurance model Dick Baxter designed it uses pull-pin landing gear retractershown herein December51 Issue Bill Warnerbuilt/photod Bob shouldnt called Embryo Duration event aunn waiter oesigneo hub all-odisa O-n pa bPUIL Ih1UUU nierniony WILfl UUbIfl PIflUIPIUb espoused C H Grant ModelAirplane News during mid-30s Uses Mattel electric motor IIII1F1 ILI7Q before/ / __ /fr -. 7TA /J-______ -— -------------/ __________________________7 I/i / - Lin& fti4sein _EQL22c& way stop wing after flutter Theres column 0 Kitcos new fuse-type engine timer Uses commercial dynamite fuse Bostonian event. nuvhEtze7ifjtn&tI2tn 5topped 3ohnTroIo I--A II/ EEh\\ m U /4 //iU iI i--i #terfrst painting. Confused Wait till read Bobs description paint checkerboard patterns model Its actually simple task U. Prasanta Banerjee India writing Theedges perhaps33 Calcuttan has taken new look some 10- toeven bailast along 15-year-old papers subject has triedthe LE Prasanta out what learned read wingsadded some diago structural mass distribution important thenal ribs forsecond parntit~ structural CGofthewingshouldbeweilforwardward part oldCt means stout leading edges light trailing Continued page 126 Li11tNT April 1982 57 AUEE Look Future Product DeveIopmen Full Command Systems Manufacturers EK Logitrol radios accessories py eai Dealer Inquiries Welcome Full Command Systems 9O8ERo sewood Spokane WA 99207 . 509 487-2122 414 90 1 r CaQtcg213 76 JIceceggoktcgPO BOX R/C GOODIES 192 S VAN NUYS CA 91408I month 3uvdia offering SPECIAL PRICES several accessory items RegularI 1prices shown small tvoe BARGAIN PRICES shown heavy typeI VCAPS$895UNIVERSAL SERVO TRAY Hi Visibility 2Color Caps I match 72 MHz Freq Specify size fits 5289 AIR-FLO HINGES21 tray Bantam Connon N OCE3 CE4 CE5 Futaba Kraft KPS12 Midget servos1 mcMtg hardware included C Q FREQUENCY FLAGS j 051 Golden Bee etc Uses Iron Hinges easy chable holder1 standard 1/432 glow pluginstall Strips 36 Ig polyester ribbons $209SMALL 1iLARGE 1 1/2All Frec colors $169$149 $169I Urn$2500$169$199 VISA ORParts Ship 7 Calif add Soles Tax Catalog 604 MORE US $1 70 Foreign Add 4-1/2% Visor Master Cordj heat desired Saran film may painted inside prior application Most spray paint will work will look like expensive factory-painted -glued Mylar films small fraction cost Scotch Monocoat will exclude moisture better before painting Since F&M Saran Wrap softer Mylar does tend get scuffed up bit making landings hard sufface such spots turn up easily repaired bit 5-mm epoxy smeared bad spot might instead put piece Mylar over spot Conclusions seems ridiculous believe piece flimsy highly-flexible easilysquashed piece foam could stiffened given enough strength addition mere paper glue become competitive model airplane begins cover long thin wing instance first thought handling delicate coat might might well try cover wet noodle once foam has taken its paper clothing undergoes transforma tion unlike metamorphosis David Banner turning Hulk say proof pudding eating What will such model competi tion date foam fleet has won nine trophies five contests using first-generation hardware SFC approach has now used success fully several types FF models including Hand-Launched Gliders P-30 Coupe Un limited Rubber models A-i Towline Gliders catapult gliders well classes AMA Gas 020s through Class D SFC natural CL Combat wings perhaps 45 models built far three RC tremendous potential also especially Quarter Scale beginners FF gas model using reed-valve 049 has built successfully tested almost lost third flight will subject follow-up article soon appear pages have recently discovered inherentlymore-efficient tapered wings can SFC-built slight increase time effort addition several layers silkspan usually required beef-up center thicker wider airfoil doing job instead results lighter overall model efficient well After years research development testing evaluation SFC concepts techniques convinced ever could eventually replace balsa wood long modelers approach open mind relative prices balsa foam reverse detailed SFC data special materials available directly author 3744 E Nye Lane Carson City NV 89701 Please send SASE inquiring FF Duration/Meuser Continued page 57 wing found formerly severe flutter problem virtually disappeared add ing diagonal ribs both increased torsional stiffness wing moved its CG forward difficult say effect turned trick Deluxe flufi~ dispenser use cattail fluffies thermal-detecting aid has become quite standard have habit making mess cute trick get upwind 126 Model Aviation Division B & B Industries Looking Hard Find Soaring Goodies Jfe &i4fane fT/acory o has complete comprehensive line R/G Soaring productstoeverexist North America o Our line products includesthosefrom some respected firms Europe well complete inventory own US manufacturers o We carry complete line Kits Hardware Accessories & Building Supplies have full inventory Launching Equipment & Related Products o We serve serious R/G soaring enthusiast supplies kits other items have sought long Call write today Free product listing & price sheet Sailplane Fcto717 244 4508 PO Box 34 Red Lion PA 173569am- 9pm EST PS Come see displays 1982 WRAMS & TOLEDO shows stripped-to-the-waist sweaty competitor blow fluffies over placebut really isnt very sporting avoid some mess modelers simply wrap cattails individu ally newspaper Rex Hinsons method reported FMA News seems especially neat Start ample supply plastic golf club tubes small waxed-paper cups cattails Cut off sections golf tube bit longer cat tail Poke hole cup put stem cattail through put cattail golf-tube section rubber-band cup over end tube Jubber-band another cup over other end ready use cattail remove second paper cup push part cattail out tube through pull unused part back tube can dropped ground stomped ridden over chase bikes making mess Painting checkerboard patterns Its easier might think easier to describe dont have draw guide lines whole pattern pair perpendicular guide lines anywhere pattern will suffice Youll need supply masking tape having right width cant buy exactly width want make yourself wider stuff using drafting board tee square hobby knife proceed follows 1 First paint background color 2 lay down strips tape horizontally edge edge 3 Remove second strip 4 Repeat steps 2 3 vertical strips tape 5 Paint now half finished 6 Remove vertical strips 7 Re place horizontal strips removed step 3 8 Remove horizontal strips removed step Continued page 130 April 1982 127 GLOWGONTIOLINI TEND PROFILE0COMBA 7RA T lireb PLUGSWIDE & NARROW WEDGE 6 oz C8pa cities UNIFLOW & ITINID S Blow Proof Seal Six Types 3 Heat Ranges Longer Life S Flash Starting Only $120 SWANSON PO Box 1Since 7948 Wayne NJ 07470 Custom Dliii Fish Ingredients detailed brochure send 50 cents CAROLINA TAFFINDER 8345 Delhi Road Charleston Hgts Sc 29405 Sport RIC Design / Distributors & -- Phone NOT JUST ANOTHER CATALOG novice tips experts expert thousands products specifica tions photos help decide make hobby enjoyable everybody interested R/C its standard reference book Will Ever Need Available through local hobby shop use coupon nd copy new RADIO CONTROL BUYERS GUIDE L Enclosed $950 $795 plus $155 postage US & canada dians send US funds VA residents add 4% sales tax EZ charge D Mastercharge D visa charge No_____________________ Exp Date _______________ Name Street city State Zip Return Boynton & Associates Inc clifton House clifton virginia 22024 v33][b248229601919600]] 3 9 Replace vertical strips remove removed step 4 10 Paint 11 Remove remaining tape 12 Admire knew Id manage make seem complicated following applies masking-anddoping job press down edges tape care fully being certain no places dope can seep under Paint coat clear dope seal edges just case previous job wasnt done perfectly apply colored dope Masking tape very sticky might ruin model getting stuff off four cures problent 1 Use drafting tape available artists supply stores instead masking tape 2 use masking tape before applying stick onto some slicksurface thin paper erasable bond paper works cut away leaving about 1/16in edges tape exposed 3 Always remove tape pulling parallel surface never perpendicular 4 Some say clean living helps cant vouch Bostonian events another Indoor event several forms has achieved some popularity rules Bostonian event flown East follows maximum pro jected wingspan 16 maximum chord 3 maximum prop diameter 6 power limited rubber motors minimum weight motors 7 grams maximum overall length prop 14 fuselage must con tain theoretical box measuring 1 Y2 x 2 x 3 larger longerons must support motor no motor-sticks fuselage must have forwardfacing windshield window side must have area least 1 sq landing gear must fixed two wheels least -in diam must rigid enough support model during hand-glide landing ROG takeoffs required Charisma factor judge rates model according model appeals him based construction neatness scalelike details uniqueness design etc 100 110 rating scale used An unlimited number flights allowed score total flight time best three flights multiplied charisma factor East Coasters seem happy 7-gram weight rule although far too light successful modelers build models lighter add ballast San Diego Orbiteers have added some modifications call event Bostonian West Minimum weight 14 grams Chord limit applies wing addition total wing area limit 48 sq makes pretty tough biplanes tandems forward windshield rule clarified projected frontal area counts Open-cockpit models required have side windows must have 1 sq side vision imaginary pilot turns out model made 1/16-square sticks plastic prop double-covered surfaces just about hits weight minimum nose add bit zest Orbiteer Walt Mooney added requirement meets models should carry pre-World War II military insignia maximum charisma factor 11 isnt much incentive add scalelike fea tures would detract flight duration Im saying bad greater factor say 12 would put emphasis scalelike features unusual confignrations full rating scale utilized would nothing everyone got scores between 1 18 120 Per sonally Id rather see length restriction deleted 130 Model Aviation Modelers Choice GMP EPOXIES High Quality Model Construction Jr Kwik Set 6 Minute 5 oz $550 Kwik Set 6 Minute 10 oz $995 Giant Kwik Set 6 Mm 16 oz $1295 Half Fast 10 Minute 10 oz $850 GMP AIRCRAFT INSTRUMENTS 80 3/16 1/4 3/8 1/2 $149 40 3/4 inch$149 TUFF STUFF FUEL LINE Three Feet Latex$ 98 Six Feet Latex$169 EASY OFF PULLER proper tool removing drive washers flywheels $795 net year deaiec erder direct Add $150 fer peateg & handling GAS MODEL PRODUCTS 8773 Russet Drive Cincinnati OH 45239 1513 3857398 another beginners class Well exactly Rather indoor event plastic-prop models maximum dimensions span length 24 Called P-24 event born Great Northwest best time far close five minutes Dave Hagen sent information event suggests better choice beginners event would have dimension limits 15- 20-in range would seem Novice Pennyplane AMA rules would fit bill plastic-prop requirement would bypass biggest hassle beginner However Dave further suggests models required ROG flat-blade sheetbalsa props permitted addition plastic props seems ROG requirement building landing gear pointless hassle permitting anything other plastic prop loses whole point further point favor plastic-prop Novice Pennyplane would once beginner got hang advancement AMA Novice Pennyplane would relatively painless step Indoor winder RMS Tooling has introduced winder having 161 ratio winding Indoor models similar size old metal-case Wilson winder understand no longer made has same ratio isnt smooth 201 winders Bob Wilder used make doesnt have turns counter Wilders did cost fifth much Wilder would have charge make winders today fully guaranteed retail price 1t$*$ INTRODUCTORY PRICE PLUS SHIPPING Tired walking WANT LAUNCH EVERY MINUTE ORDER SAILPLANE LAUNCH LINE RETRIEVAL SYSTEM LIGHTWEIGHT BUT HEAVY-DUTY DESIGN TO RETRIEVE ANY SYSTEM COMPLETE WITHBATTERY POWER CABLES HAND SWITCH CONTROL LINE GUIDE AND 1000 OF BRAIDED LINE DAVEY SYSTEMS April 1982 131 maximum length increased say 20 init would better match snazzylooking canards deltas sometimes build STEARMAN PT- 17 Offered Two Sizes Quadra 60 Quarter Scale Quadra type Engines 96' Span 2 Scale Far 60 Engines 64/ Span 1000 Sq Quarter Scale Plan Set $3250 2 Scale Plan $1850 Please a'ther designs Kits offered CORPORATION Wood Lane Malvern Pa19355 215644-0692 4 Gal Case %One or5GalCan 24 Gal Per Gal 575 650 750 800 825 985 1500 2400 126 Gal Per Gal 525 575 645 725 775 950 1400 2300 30 Gal Drum EA 9700 13300 16100 17800 19000 24200 36500 58200 54 Gal Drum EA 13500 19900 25000 28000 30000 39000 60000 97500 Prices subject change notice Free delivery 1 4 5 24 & 126 gal deals 30 & 54 gal drums freight collect FOB Clover SC Gallon price determined nitro content & total quantity ordered SC orders add 4% sales tax Add $250 COD package $100 maximum charge card & COD orders NEW Power Booster 1/4 scale eng $1 2O0/qt $3800/gal freight included Use 3 os/gal gas mix eAmerican made eSchnuerle ports eDouble ball bearing sPerry carburetor eForged & domed piston Forged & busheu con rod eQ-ring sealed back cover elnvestment cast crankcase Suggested Retail $14600 Muffler Included Kraft Engine Warranty Parts & Repair RJL INDUSTRIES PO sox 5654 PASADENA CA 91107 213 359-0016 795-9821 NEW Performance Fuel Higher RPM & longer runs easier starting good wear characteristics mixture properly set Use RED MAX price plus 10% SILKSPUN COVEPITE exclusive Hi-Lo Temperature Range prevents accidental warping greatest sheeted ft7 surfaces per sq ft i L PA 19044 $1195 dealer discounts five RM S Tooling 11370 ElDorado Ave San Fernando CA 91340 Bob Meuser 42eX Gregory St Oaklan4 CA 94619 FF Scale/Warner Continued page 59 Photos new photo service us like build planes 30s 40s now offering sample WACO 5 x 8 B/W catalog listing 3684 pix for$200 Sendto Hank Clark 7285 May St Ft Edward NY 12828 Yep Hank oaly draws em hes snapped plenty em too Edito Hank Jr now operates photo service Send hints tips especially de warping winders upcoming columns Bill Warner 423-C San VicenteBlvd Santa Monica CA 90402 Kids Petro Continued page 62 up turn climb vertically 45-deg eleva tion level applyfulIdown plane returns completed loop smoothly go full down medium up control plane will break out loop pull Out normal level altitude Practice high outside loop experience importantly determine plane aerodynamically capable tight outside turn may need change balance engine thrust line control linkages Sometimes new plane needed Part reason larger outside turn control handle setup normal sport flying handle set slight down angle like handle pistoL feels comfortable lets plane fly level groove nicely limits much wrist can pivot down set handle upright soup down wrist pivots equal hand no longer comfortable neutral position will have concentrate fly leveL Set up handle trim individual taste requirements grooving maneuvering What needed handle finger-actuated trim change feature Whos going invent Inverted flight youre still may second airplane Thats alright may get rid too next maneuver inverted flight prefer hold handle normally make movements very slowly first can see plane going way its supposed go up handle turns nose ground down handle turns nose top circle have remember up down down up Have helper hold upside down practice ground before attempting air first attempt should keep plane high allow room corrections fly inverted -lap will need Stunttype fuel tank keep engine running inverted Keep practicing until can stay inverted three level laps Pull-outs can made anywhere except windward quadrant circle Join AMA basic Stunt maneuvers low level inside outside loops wing-over inverted will make schoolyard ace 132 Model Aviation Gal 1050 1150 1250 1325 1400 1750 2500 3000 Per Gal 625 695 775 825 850 1025 1600 2600 Tour UlIOli 0 UdLO[ syiiiiiiiu ally UOlliOIlldLlOll 01 UdLOl duo ayuiirniiu oil Nitro 0% 5% 10% 12% 15% 25% 40% 60% Nobody does better Nnhndu dnpq ,hpanprCOMING SOON NEW SMOOTHER RJL K61
Edition: Model Aviation - 1982/04
Page Numbers: 56, 57, 126, 127, 130, 131, 132
Free Flight DURA TION Bob Meuser SYMPO 82 last call barely time get paper accepted 1982 NFFS Symposium Report Deadline April 1 hardship case perhaps can negotiate Editor Jim Bennett 324 Helfenstein Ave St Louis MO 63119 Laminar-flow airfoils FF7 usually reliable source has three-times FAI FF World Champ Thomas Koster has messing laminar-flow foils FAI Power models Hmnim Normally wed rather have turbulent flow upper surface least keep flow separating least glide climb laminar flow would blessing cut down drag again separation could cause large increases drag could occur both top bottom surfaces though lift essentially zero foil isnt shaped just right anything other classical infinitesimallythin flat plate Laminar flow during glide Perhaps very low lift coefficients means gliding fast isnt way normally play game minimum sink speed criterion glide flattens speed increases virtue lower profile drag coefficient perhaps can win game Lower lift coefficient means lower induced drag perhaps lower aspect ratios order means greater chord hence higher Reynolds number also increased higher flight speed higher Reynolds number gives lower skinfriction drag coefficient Characteristically lam mar flow foils have maximum-thickness point well aft Koster reported have wind tunnel disposal charac teristic thoroughness hes just liable come up new answer old problem Fuse-type engine timer use fuse de thermalizer timei- engine timer well problem past has find fuse material burned fast predict able burning speed Commercial dynamite fuse does exactly Kitco has introduced engine timer utilizing Kitco device simple affair cobbled up music wire aluminum tubing must well-anchored fuselage prevent being torn out being set up device cocked pushing wire spring side inserting stiff fuse hole tube fuse burns past wire wire snaps over pinch surgical-tubing fuel line pinch-off action quite positive fuse lit after engine started means punk consisting length Sig DT fuse Once fuse lit no turning off Pinching pliers dunking water wont little scary obviously potential danger involved can say about lot things especially half-horse power buzz saws put noses Gas models routine using fuse-timer should well rehearsed Installed weight 06 oz save about ver Tatone type timer few grams over modified Tomy Toy motor Price mechanism fuel tubing engine fuse bit DT fuse punk instructions $750 Order Kitco 4327 McDermed Houston TX 77035 Add 10% postage cure common flutter Wing flutter common problem FF competition classes has become severe Towline Gliders zoom-launch speeds have increased Increas ing torsional stiffness wing sheet covering boxed-in leading edge diagonal ribs always helps 56 Model Aviation Guess built Embyro Endurance model Dick Baxter designed it uses pull-pin landing gear retractershown herein December51 Issue Bill Warnerbuilt/photod Bob shouldnt called Embryo Duration event aunn waiter oesigneo hub all-odisa O-n pa bPUIL Ih1UUU nierniony WILfl UUbIfl PIflUIPIUb espoused C H Grant ModelAirplane News during mid-30s Uses Mattel electric motor IIII1F1 ILI7Q before/ / __ /fr -. 7TA /J-______ -— -------------/ __________________________7 I/i / - Lin& fti4sein _EQL22c& way stop wing after flutter Theres column 0 Kitcos new fuse-type engine timer Uses commercial dynamite fuse Bostonian event. nuvhEtze7ifjtn&tI2tn 5topped 3ohnTroIo I--A II/ EEh\\ m U /4 //iU iI i--i #terfrst painting. Confused Wait till read Bobs description paint checkerboard patterns model Its actually simple task U. Prasanta Banerjee India writing Theedges perhaps33 Calcuttan has taken new look some 10- toeven bailast along 15-year-old papers subject has triedthe LE Prasanta out what learned read wingsadded some diago structural mass distribution important thenal ribs forsecond parntit~ structural CGofthewingshouldbeweilforwardward part oldCt means stout leading edges light trailing Continued page 126 Li11tNT April 1982 57 AUEE Look Future Product DeveIopmen Full Command Systems Manufacturers EK Logitrol radios accessories py eai Dealer Inquiries Welcome Full Command Systems 9O8ERo sewood Spokane WA 99207 . 509 487-2122 414 90 1 r CaQtcg213 76 JIceceggoktcgPO BOX R/C GOODIES 192 S VAN NUYS CA 91408I month 3uvdia offering SPECIAL PRICES several accessory items RegularI 1prices shown small tvoe BARGAIN PRICES shown heavy typeI VCAPS$895UNIVERSAL SERVO TRAY Hi Visibility 2Color Caps I match 72 MHz Freq Specify size fits 5289 AIR-FLO HINGES21 tray Bantam Connon N OCE3 CE4 CE5 Futaba Kraft KPS12 Midget servos1 mcMtg hardware included C Q FREQUENCY FLAGS j 051 Golden Bee etc Uses Iron Hinges easy chable holder1 standard 1/432 glow pluginstall Strips 36 Ig polyester ribbons $209SMALL 1iLARGE 1 1/2All Frec colors $169$149 $169I Urn$2500$169$199 VISA ORParts Ship 7 Calif add Soles Tax Catalog 604 MORE US $1 70 Foreign Add 4-1/2% Visor Master Cordj heat desired Saran film may painted inside prior application Most spray paint will work will look like expensive factory-painted -glued Mylar films small fraction cost Scotch Monocoat will exclude moisture better before painting Since F&M Saran Wrap softer Mylar does tend get scuffed up bit making landings hard sufface such spots turn up easily repaired bit 5-mm epoxy smeared bad spot might instead put piece Mylar over spot Conclusions seems ridiculous believe piece flimsy highly-flexible easilysquashed piece foam could stiffened given enough strength addition mere paper glue become competitive model airplane begins cover long thin wing instance first thought handling delicate coat might might well try cover wet noodle once foam has taken its paper clothing undergoes transforma tion unlike metamorphosis David Banner turning Hulk say proof pudding eating What will such model competi tion date foam fleet has won nine trophies five contests using first-generation hardware SFC approach has now used success fully several types FF models including Hand-Launched Gliders P-30 Coupe Un limited Rubber models A-i Towline Gliders catapult gliders well classes AMA Gas 020s through Class D SFC natural CL Combat wings perhaps 45 models built far three RC tremendous potential also especially Quarter Scale beginners FF gas model using reed-valve 049 has built successfully tested almost lost third flight will subject follow-up article soon appear pages have recently discovered inherentlymore-efficient tapered wings can SFC-built slight increase time effort addition several layers silkspan usually required beef-up center thicker wider airfoil doing job instead results lighter overall model efficient well After years research development testing evaluation SFC concepts techniques convinced ever could eventually replace balsa wood long modelers approach open mind relative prices balsa foam reverse detailed SFC data special materials available directly author 3744 E Nye Lane Carson City NV 89701 Please send SASE inquiring FF Duration/Meuser Continued page 57 wing found formerly severe flutter problem virtually disappeared add ing diagonal ribs both increased torsional stiffness wing moved its CG forward difficult say effect turned trick Deluxe flufi~ dispenser use cattail fluffies thermal-detecting aid has become quite standard have habit making mess cute trick get upwind 126 Model Aviation Division B & B Industries Looking Hard Find Soaring Goodies Jfe &i4fane fT/acory o has complete comprehensive line R/G Soaring productstoeverexist North America o Our line products includesthosefrom some respected firms Europe well complete inventory own US manufacturers o We carry complete line Kits Hardware Accessories & Building Supplies have full inventory Launching Equipment & Related Products o We serve serious R/G soaring enthusiast supplies kits other items have sought long Call write today Free product listing & price sheet Sailplane Fcto717 244 4508 PO Box 34 Red Lion PA 173569am- 9pm EST PS Come see displays 1982 WRAMS & TOLEDO shows stripped-to-the-waist sweaty competitor blow fluffies over placebut really isnt very sporting avoid some mess modelers simply wrap cattails individu ally newspaper Rex Hinsons method reported FMA News seems especially neat Start ample supply plastic golf club tubes small waxed-paper cups cattails Cut off sections golf tube bit longer cat tail Poke hole cup put stem cattail through put cattail golf-tube section rubber-band cup over end tube Jubber-band another cup over other end ready use cattail remove second paper cup push part cattail out tube through pull unused part back tube can dropped ground stomped ridden over chase bikes making mess Painting checkerboard patterns Its easier might think easier to describe dont have draw guide lines whole pattern pair perpendicular guide lines anywhere pattern will suffice Youll need supply masking tape having right width cant buy exactly width want make yourself wider stuff using drafting board tee square hobby knife proceed follows 1 First paint background color 2 lay down strips tape horizontally edge edge 3 Remove second strip 4 Repeat steps 2 3 vertical strips tape 5 Paint now half finished 6 Remove vertical strips 7 Re place horizontal strips removed step 3 8 Remove horizontal strips removed step Continued page 130 April 1982 127 GLOWGONTIOLINI TEND PROFILE0COMBA 7RA T lireb PLUGSWIDE & NARROW WEDGE 6 oz C8pa cities UNIFLOW & ITINID S Blow Proof Seal Six Types 3 Heat Ranges Longer Life S Flash Starting Only $120 SWANSON PO Box 1Since 7948 Wayne NJ 07470 Custom Dliii Fish Ingredients detailed brochure send 50 cents CAROLINA TAFFINDER 8345 Delhi Road Charleston Hgts Sc 29405 Sport RIC Design / Distributors & -- Phone NOT JUST ANOTHER CATALOG novice tips experts expert thousands products specifica tions photos help decide make hobby enjoyable everybody interested R/C its standard reference book Will Ever Need Available through local hobby shop use coupon nd copy new RADIO CONTROL BUYERS GUIDE L Enclosed $950 $795 plus $155 postage US & canada dians send US funds VA residents add 4% sales tax EZ charge D Mastercharge D visa charge No_____________________ Exp Date _______________ Name Street city State Zip Return Boynton & Associates Inc clifton House clifton virginia 22024 v33][b248229601919600]] 3 9 Replace vertical strips remove removed step 4 10 Paint 11 Remove remaining tape 12 Admire knew Id manage make seem complicated following applies masking-anddoping job press down edges tape care fully being certain no places dope can seep under Paint coat clear dope seal edges just case previous job wasnt done perfectly apply colored dope Masking tape very sticky might ruin model getting stuff off four cures problent 1 Use drafting tape available artists supply stores instead masking tape 2 use masking tape before applying stick onto some slicksurface thin paper erasable bond paper works cut away leaving about 1/16in edges tape exposed 3 Always remove tape pulling parallel surface never perpendicular 4 Some say clean living helps cant vouch Bostonian events another Indoor event several forms has achieved some popularity rules Bostonian event flown East follows maximum pro jected wingspan 16 maximum chord 3 maximum prop diameter 6 power limited rubber motors minimum weight motors 7 grams maximum overall length prop 14 fuselage must con tain theoretical box measuring 1 Y2 x 2 x 3 larger longerons must support motor no motor-sticks fuselage must have forwardfacing windshield window side must have area least 1 sq landing gear must fixed two wheels least -in diam must rigid enough support model during hand-glide landing ROG takeoffs required Charisma factor judge rates model according model appeals him based construction neatness scalelike details uniqueness design etc 100 110 rating scale used An unlimited number flights allowed score total flight time best three flights multiplied charisma factor East Coasters seem happy 7-gram weight rule although far too light successful modelers build models lighter add ballast San Diego Orbiteers have added some modifications call event Bostonian West Minimum weight 14 grams Chord limit applies wing addition total wing area limit 48 sq makes pretty tough biplanes tandems forward windshield rule clarified projected frontal area counts Open-cockpit models required have side windows must have 1 sq side vision imaginary pilot turns out model made 1/16-square sticks plastic prop double-covered surfaces just about hits weight minimum nose add bit zest Orbiteer Walt Mooney added requirement meets models should carry pre-World War II military insignia maximum charisma factor 11 isnt much incentive add scalelike fea tures would detract flight duration Im saying bad greater factor say 12 would put emphasis scalelike features unusual confignrations full rating scale utilized would nothing everyone got scores between 1 18 120 Per sonally Id rather see length restriction deleted 130 Model Aviation Modelers Choice GMP EPOXIES High Quality Model Construction Jr Kwik Set 6 Minute 5 oz $550 Kwik Set 6 Minute 10 oz $995 Giant Kwik Set 6 Mm 16 oz $1295 Half Fast 10 Minute 10 oz $850 GMP AIRCRAFT INSTRUMENTS 80 3/16 1/4 3/8 1/2 $149 40 3/4 inch$149 TUFF STUFF FUEL LINE Three Feet Latex$ 98 Six Feet Latex$169 EASY OFF PULLER proper tool removing drive washers flywheels $795 net year deaiec erder direct Add $150 fer peateg & handling GAS MODEL PRODUCTS 8773 Russet Drive Cincinnati OH 45239 1513 3857398 another beginners class Well exactly Rather indoor event plastic-prop models maximum dimensions span length 24 Called P-24 event born Great Northwest best time far close five minutes Dave Hagen sent information event suggests better choice beginners event would have dimension limits 15- 20-in range would seem Novice Pennyplane AMA rules would fit bill plastic-prop requirement would bypass biggest hassle beginner However Dave further suggests models required ROG flat-blade sheetbalsa props permitted addition plastic props seems ROG requirement building landing gear pointless hassle permitting anything other plastic prop loses whole point further point favor plastic-prop Novice Pennyplane would once beginner got hang advancement AMA Novice Pennyplane would relatively painless step Indoor winder RMS Tooling has introduced winder having 161 ratio winding Indoor models similar size old metal-case Wilson winder understand no longer made has same ratio isnt smooth 201 winders Bob Wilder used make doesnt have turns counter Wilders did cost fifth much Wilder would have charge make winders today fully guaranteed retail price 1t$*$ INTRODUCTORY PRICE PLUS SHIPPING Tired walking WANT LAUNCH EVERY MINUTE ORDER SAILPLANE LAUNCH LINE RETRIEVAL SYSTEM LIGHTWEIGHT BUT HEAVY-DUTY DESIGN TO RETRIEVE ANY SYSTEM COMPLETE WITHBATTERY POWER CABLES HAND SWITCH CONTROL LINE GUIDE AND 1000 OF BRAIDED LINE DAVEY SYSTEMS April 1982 131 maximum length increased say 20 init would better match snazzylooking canards deltas sometimes build STEARMAN PT- 17 Offered Two Sizes Quadra 60 Quarter Scale Quadra type Engines 96' Span 2 Scale Far 60 Engines 64/ Span 1000 Sq Quarter Scale Plan Set $3250 2 Scale Plan $1850 Please a'ther designs Kits offered CORPORATION Wood Lane Malvern Pa19355 215644-0692 4 Gal Case %One or5GalCan 24 Gal Per Gal 575 650 750 800 825 985 1500 2400 126 Gal Per Gal 525 575 645 725 775 950 1400 2300 30 Gal Drum EA 9700 13300 16100 17800 19000 24200 36500 58200 54 Gal Drum EA 13500 19900 25000 28000 30000 39000 60000 97500 Prices subject change notice Free delivery 1 4 5 24 & 126 gal deals 30 & 54 gal drums freight collect FOB Clover SC Gallon price determined nitro content & total quantity ordered SC orders add 4% sales tax Add $250 COD package $100 maximum charge card & COD orders NEW Power Booster 1/4 scale eng $1 2O0/qt $3800/gal freight included Use 3 os/gal gas mix eAmerican made eSchnuerle ports eDouble ball bearing sPerry carburetor eForged & domed piston Forged & busheu con rod eQ-ring sealed back cover elnvestment cast crankcase Suggested Retail $14600 Muffler Included Kraft Engine Warranty Parts & Repair RJL INDUSTRIES PO sox 5654 PASADENA CA 91107 213 359-0016 795-9821 NEW Performance Fuel Higher RPM & longer runs easier starting good wear characteristics mixture properly set Use RED MAX price plus 10% SILKSPUN COVEPITE exclusive Hi-Lo Temperature Range prevents accidental warping greatest sheeted ft7 surfaces per sq ft i L PA 19044 $1195 dealer discounts five RM S Tooling 11370 ElDorado Ave San Fernando CA 91340 Bob Meuser 42eX Gregory St Oaklan4 CA 94619 FF Scale/Warner Continued page 59 Photos new photo service us like build planes 30s 40s now offering sample WACO 5 x 8 B/W catalog listing 3684 pix for$200 Sendto Hank Clark 7285 May St Ft Edward NY 12828 Yep Hank oaly draws em hes snapped plenty em too Edito Hank Jr now operates photo service Send hints tips especially de warping winders upcoming columns Bill Warner 423-C San VicenteBlvd Santa Monica CA 90402 Kids Petro Continued page 62 up turn climb vertically 45-deg eleva tion level applyfulIdown plane returns completed loop smoothly go full down medium up control plane will break out loop pull Out normal level altitude Practice high outside loop experience importantly determine plane aerodynamically capable tight outside turn may need change balance engine thrust line control linkages Sometimes new plane needed Part reason larger outside turn control handle setup normal sport flying handle set slight down angle like handle pistoL feels comfortable lets plane fly level groove nicely limits much wrist can pivot down set handle upright soup down wrist pivots equal hand no longer comfortable neutral position will have concentrate fly leveL Set up handle trim individual taste requirements grooving maneuvering What needed handle finger-actuated trim change feature Whos going invent Inverted flight youre still may second airplane Thats alright may get rid too next maneuver inverted flight prefer hold handle normally make movements very slowly first can see plane going way its supposed go up handle turns nose ground down handle turns nose top circle have remember up down down up Have helper hold upside down practice ground before attempting air first attempt should keep plane high allow room corrections fly inverted -lap will need Stunttype fuel tank keep engine running inverted Keep practicing until can stay inverted three level laps Pull-outs can made anywhere except windward quadrant circle Join AMA basic Stunt maneuvers low level inside outside loops wing-over inverted will make schoolyard ace 132 Model Aviation Gal 1050 1150 1250 1325 1400 1750 2500 3000 Per Gal 625 695 775 825 850 1025 1600 2600 Tour UlIOli 0 UdLO[ syiiiiiiiu ally UOlliOIlldLlOll 01 UdLOl duo ayuiirniiu oil Nitro 0% 5% 10% 12% 15% 25% 40% 60% Nobody does better Nnhndu dnpq ,hpanprCOMING SOON NEW SMOOTHER RJL K61