Free Flight MINI-ELECTRIC new craze sit Id bet will has MRC come out new rig about 35 bucks smaller Scale sport jobs do-it yourselfers making great strides heard rumors about guys like Ed Toner flying Peanuts electric hearing about aint seeingand seeing believing Well have seen Im impressed Vein Carys little Red Devil Bristol M-1 Ferrell Papic telling about great two-minute Peanut model Mile-Square Park near Los Angeles some time will admit curiosity piqued actually saw air overwhelmed After spending some time Art Overn Vein Cary originators mini-marvel Ferrell doing some interesting things can see future couple months back may remember pre-production shot new V-L small motor featured battery pack shoved right onto geared darling off went featured internal ring gear extra battery cell added two came Another look Yarn Cary/Art Overn electric power system L homemade reduction gear drives prop Y2 speed tiny Scale jobs Note right thrust shaft above motor fixed large gear prop rotate around tube Prop blades plastic cottage-cheese-container material Bill Warner has information column Thats really detached aileron Mac McJunkins plane Rl Macs magic touch masking tape airbrush fooled us secret lies overdoing shadow isthis man L smiling just got 90-second testfiight thatswhy Mike MuliigansCranweii CLA-3 wenton awinner Jumbo Rubber Mikes old hand old-time rubber ships Some Avro Avians R came top wing missing Bob Weaterell flew beautifully i986 Scale Staffel Annual Bob isa master using geared rubber motors uses two smooth flight 56 Model Aviation Sport & Scale Vein Carys Bristol Red Devil features neat plug-in package Its miniature electric powersystemthe motor Isfrom toy car Planes allup weight 40 grams consistently gets two-minute flights motortray R holds motor homemade reduction gear Ni-Cd pack dress snap back end holds plane small lever near prop operates homemade knife switch stock would turn rather respectable prop pull 36-in-span model shorter nose betterif leave batteries standard location planes longer noses guys moving batteries back balance installing switch V-L sells $2495 isnt much awell engineered motor homemade numbers offer lot tinkerer though motors Art Ovem has experi menting withone neatly installed Caiy modelcome toy pen-cell-oper ated electric crs available local toy store Stomper car example though Art says ther better ones available 21 gears having holes centers Small motors also available Edmund Scientific Co peanuts no pun intended Radio Shack source small motors end switches too although Bud Vein preferred homemade knife-type switch store-bought kind since can get less current-resistance own handiwork Art flying Radio Shack motor Pacific Ace suggests combining armature No 723-223 motor end cap carbon brushes No 723228 motor toy motors have carbon brushes worth trouble messing Papic took Stomper motor shimmed magnets 010 toward annatore reduce air gap get zip awaits installation 25-in Cub Overn runs prop directly shaft Radio Shack motor Pacific Ace would seem smaller motors profit gearing Finding just right combination can take some experimentation Obviously Bristol about right Id prefer talk about motor drives prop once two turns motor driven gear prop sharing tube rotates around fixed shaft attached motor just right distance allow teeth mesh binding Bristol has thin brass sheet supports soldered Papic able get right clearance Stomper setup filing flat bottom brass tube mounting bearing side motor casing gear prop mounted shaft Props quick-change being easily driven pin gear being held bit shrink tubing glued thread wound around small notch shaft Batteries pose problem now making good small Ni-Cds work well Bristol uses two 70 mAh cells mill-Ampere hours tandem two 100 mAh cells seem work OK too Overn found best cells made Gould Co surplus electronics store Some toy cars have rechargeable batter ies have charger can always use lantern battery used charge old Petit Brochet Mattel Superstar unit way using old car tall-light bulb circuit cut down voltage bulb glowed brightly first got dimmer batteries model filled up got pretty dim Id fly have adjustable charger can charge 100 mAh cells about two minutes ampere really neat innovation Bristol tray used mount whole power setup slides nose model fastens rear dress snap can easily popped I out charging also comes forward crash helps prevent damage use strip Velcro bottom tray real stroke genius Another Velcro strip glued battery pack meshes perfectly enough prevent battery move ment until want move order shift center gravity trim tried Continued page 156 k September1986 57 Tom Arnoids Martin B-26 Marauder Pres Bruning plans iooks great its beginner can certalniy rewarding project expert modeler Alain Parmentier Montreuli France made keen little Potez 36 Peanut Weight mere 55 grams Photo Parmentier Dick Allens fantasy kind reminds us oid question niany eiephants can get VW Answer Four Two front two back Whatll think next 1429 Fox Dale P1 Sidney OH 45365 clever ruse hinging rudder letting find ____________________________________ felt happiest solve problem FF Duration/Hartill straightened out flights right winners Continued page 59 circle _________________________________________________ Top dog Peanut Clarence Mather Parnall Pixie top Junior Jeff Witt man definitely has knack Tailwind Contester Lacey Ralph Cooke put up fine flights trio Gas jobs Ian Payne slipped fine float-equipped Vultee L-1 third Gas Second Ferrell Papic tried-and-true Astro 02-powered Bleriot 7 taking top honors Bill Stromans Taube CO-2 power Its great flier new one-inch-to-the-foot Bellanca CF four cells takes Astro 02 worked marvelously extra weight really nice thing about electric can always move batteries rearward balance motor prop xeight prop Bristol slotted hub Dick Howards famous cottage-cheese-container plastic blades glued Theyre almost indestruc tible contest scene April May months hard keep up going San Diego Scale Staffel Annual interesting set Otay Mesa about mile Mexican border place alive La Migra US Immigration Naturalization officers well illegals heading north work fields California Just meet got going well moved Navy Seals parachute team could make several drops onto field Still lots great thermals lots neat Scale activity week later off Taft Taft Free Fligliter means space thermals hobnobbing lots people know what doing exactly Memorial Day weekend meet US Free Flight Championships year being number 16 great fun events almost type imaginable both Indoors Out couple non-Free Flight types put evening demonstration precision Quarter-Scale aero batics two Quadra-powered Lasers Both crashed Free Flight planes did year quality flying excellent Scale Taft always fun because have ROG rise off ground great booming thermals can place mediocre models have look fantastic Still models notably mediocre Mike Mulligans Jumbo Rubber Cranwell Parasol Loren Williams Rumpler Bipe Dick Siefrieds 54-inch Me-109 PT-19 making easy flights 1-1/2 two minutes Mulligans ship directionalstability problems last year employed Happy hint Ferrell Papic tells us rubber lube great taking Hot Stuff off fingers took top off bottle Hot Stuff internal pressure built up days heat squirted over placebut luckily eyes rubber-lubing about half hour afterwards Don Srull out spying West Coast secrets DC Maxecuters sald uses baby oil same purpose Ill have try ideas since usually wind up using sanding block 60-grit gamet paper get dang stuff off own bod Just received new Repla-Tech International aircraft catalogs two booklets can get sending $360 company 48500 McKenzie Highway Vida OR 974881 heartily recommend stuff modelers can use way Aeromodeller plans Hirsch raceplane drawings forty-cent black-andwhite snaps Golden Age racers packs color shots covering tons good subjects Tiger Moth pack features ancient brass com passes mahogany instrument panels both cockpits photo packs seem hover around average price 80 cents per snap color some have upwards 40 pictures same plane Some others have five serious about particular plane bargaln catalog descriptions worth trip Send along experiences have tiny Electric Scale jobbies well try keep gang posted Ciao Bill Warner 423 San Vicente Blvd Santa Monica CA 90402 build modern Wakefield go flying us perhaps would alter thinking whether World Competitive Russian Wakefield desIgn features Now lets take look what advanced technology has done FiB design Just remember part competition formula Ron Pol lard Great Britain has written interesting paper describing development Russian Wakefields paper presented SMAE Technical Symposium 1985 Design analysis excerpted follows Note following abbreviations DPR Delayed Prop Release VIT Variable-Incidence Tall AR Auto Rudder VIW Variable-Incidence Wing wish increase climb rate model two options open crease power use power available efficiently power available Wakefield virtually fixed energy-stor age-capacity rubber quality sec ond option open Improved efficiency means reduced drag significance means wing drag Lift drag interrelated given wing section incidence fore lift could reduced zero drag would reduce dramatically trouble theory lift model will climb unless. unless model pointed way wish go upwards steepest angle possibleverti cal practical best climb configuration need look no further designs used Power fliers So get following features WIng airfoil section should have low camber thinfive six percent aspect ratio should range moderate high 121 151 dihedral should rela tively low flat center resist turn Fuselage Short nose long tall moment arm low pylon keep model going straight resist turn Center gravIty Forward location 550/s Continued page 158 156 Model Aviation FF Scale/Warner Continued page 57
Edition: Model Aviation - 1986/09
Page Numbers: 56, 57, 156
Edition: Model Aviation - 1986/09
Page Numbers: 56, 57, 156
Free Flight MINI-ELECTRIC new craze sit Id bet will has MRC come out new rig about 35 bucks smaller Scale sport jobs do-it yourselfers making great strides heard rumors about guys like Ed Toner flying Peanuts electric hearing about aint seeingand seeing believing Well have seen Im impressed Vein Carys little Red Devil Bristol M-1 Ferrell Papic telling about great two-minute Peanut model Mile-Square Park near Los Angeles some time will admit curiosity piqued actually saw air overwhelmed After spending some time Art Overn Vein Cary originators mini-marvel Ferrell doing some interesting things can see future couple months back may remember pre-production shot new V-L small motor featured battery pack shoved right onto geared darling off went featured internal ring gear extra battery cell added two came Another look Yarn Cary/Art Overn electric power system L homemade reduction gear drives prop Y2 speed tiny Scale jobs Note right thrust shaft above motor fixed large gear prop rotate around tube Prop blades plastic cottage-cheese-container material Bill Warner has information column Thats really detached aileron Mac McJunkins plane Rl Macs magic touch masking tape airbrush fooled us secret lies overdoing shadow isthis man L smiling just got 90-second testfiight thatswhy Mike MuliigansCranweii CLA-3 wenton awinner Jumbo Rubber Mikes old hand old-time rubber ships Some Avro Avians R came top wing missing Bob Weaterell flew beautifully i986 Scale Staffel Annual Bob isa master using geared rubber motors uses two smooth flight 56 Model Aviation Sport & Scale Vein Carys Bristol Red Devil features neat plug-in package Its miniature electric powersystemthe motor Isfrom toy car Planes allup weight 40 grams consistently gets two-minute flights motortray R holds motor homemade reduction gear Ni-Cd pack dress snap back end holds plane small lever near prop operates homemade knife switch stock would turn rather respectable prop pull 36-in-span model shorter nose betterif leave batteries standard location planes longer noses guys moving batteries back balance installing switch V-L sells $2495 isnt much awell engineered motor homemade numbers offer lot tinkerer though motors Art Ovem has experi menting withone neatly installed Caiy modelcome toy pen-cell-oper ated electric crs available local toy store Stomper car example though Art says ther better ones available 21 gears having holes centers Small motors also available Edmund Scientific Co peanuts no pun intended Radio Shack source small motors end switches too although Bud Vein preferred homemade knife-type switch store-bought kind since can get less current-resistance own handiwork Art flying Radio Shack motor Pacific Ace suggests combining armature No 723-223 motor end cap carbon brushes No 723228 motor toy motors have carbon brushes worth trouble messing Papic took Stomper motor shimmed magnets 010 toward annatore reduce air gap get zip awaits installation 25-in Cub Overn runs prop directly shaft Radio Shack motor Pacific Ace would seem smaller motors profit gearing Finding just right combination can take some experimentation Obviously Bristol about right Id prefer talk about motor drives prop once two turns motor driven gear prop sharing tube rotates around fixed shaft attached motor just right distance allow teeth mesh binding Bristol has thin brass sheet supports soldered Papic able get right clearance Stomper setup filing flat bottom brass tube mounting bearing side motor casing gear prop mounted shaft Props quick-change being easily driven pin gear being held bit shrink tubing glued thread wound around small notch shaft Batteries pose problem now making good small Ni-Cds work well Bristol uses two 70 mAh cells mill-Ampere hours tandem two 100 mAh cells seem work OK too Overn found best cells made Gould Co surplus electronics store Some toy cars have rechargeable batter ies have charger can always use lantern battery used charge old Petit Brochet Mattel Superstar unit way using old car tall-light bulb circuit cut down voltage bulb glowed brightly first got dimmer batteries model filled up got pretty dim Id fly have adjustable charger can charge 100 mAh cells about two minutes ampere really neat innovation Bristol tray used mount whole power setup slides nose model fastens rear dress snap can easily popped I out charging also comes forward crash helps prevent damage use strip Velcro bottom tray real stroke genius Another Velcro strip glued battery pack meshes perfectly enough prevent battery move ment until want move order shift center gravity trim tried Continued page 156 k September1986 57 Tom Arnoids Martin B-26 Marauder Pres Bruning plans iooks great its beginner can certalniy rewarding project expert modeler Alain Parmentier Montreuli France made keen little Potez 36 Peanut Weight mere 55 grams Photo Parmentier Dick Allens fantasy kind reminds us oid question niany eiephants can get VW Answer Four Two front two back Whatll think next 1429 Fox Dale P1 Sidney OH 45365 clever ruse hinging rudder letting find ____________________________________ felt happiest solve problem FF Duration/Hartill straightened out flights right winners Continued page 59 circle _________________________________________________ Top dog Peanut Clarence Mather Parnall Pixie top Junior Jeff Witt man definitely has knack Tailwind Contester Lacey Ralph Cooke put up fine flights trio Gas jobs Ian Payne slipped fine float-equipped Vultee L-1 third Gas Second Ferrell Papic tried-and-true Astro 02-powered Bleriot 7 taking top honors Bill Stromans Taube CO-2 power Its great flier new one-inch-to-the-foot Bellanca CF four cells takes Astro 02 worked marvelously extra weight really nice thing about electric can always move batteries rearward balance motor prop xeight prop Bristol slotted hub Dick Howards famous cottage-cheese-container plastic blades glued Theyre almost indestruc tible contest scene April May months hard keep up going San Diego Scale Staffel Annual interesting set Otay Mesa about mile Mexican border place alive La Migra US Immigration Naturalization officers well illegals heading north work fields California Just meet got going well moved Navy Seals parachute team could make several drops onto field Still lots great thermals lots neat Scale activity week later off Taft Taft Free Fligliter means space thermals hobnobbing lots people know what doing exactly Memorial Day weekend meet US Free Flight Championships year being number 16 great fun events almost type imaginable both Indoors Out couple non-Free Flight types put evening demonstration precision Quarter-Scale aero batics two Quadra-powered Lasers Both crashed Free Flight planes did year quality flying excellent Scale Taft always fun because have ROG rise off ground great booming thermals can place mediocre models have look fantastic Still models notably mediocre Mike Mulligans Jumbo Rubber Cranwell Parasol Loren Williams Rumpler Bipe Dick Siefrieds 54-inch Me-109 PT-19 making easy flights 1-1/2 two minutes Mulligans ship directionalstability problems last year employed Happy hint Ferrell Papic tells us rubber lube great taking Hot Stuff off fingers took top off bottle Hot Stuff internal pressure built up days heat squirted over placebut luckily eyes rubber-lubing about half hour afterwards Don Srull out spying West Coast secrets DC Maxecuters sald uses baby oil same purpose Ill have try ideas since usually wind up using sanding block 60-grit gamet paper get dang stuff off own bod Just received new Repla-Tech International aircraft catalogs two booklets can get sending $360 company 48500 McKenzie Highway Vida OR 974881 heartily recommend stuff modelers can use way Aeromodeller plans Hirsch raceplane drawings forty-cent black-andwhite snaps Golden Age racers packs color shots covering tons good subjects Tiger Moth pack features ancient brass com passes mahogany instrument panels both cockpits photo packs seem hover around average price 80 cents per snap color some have upwards 40 pictures same plane Some others have five serious about particular plane bargaln catalog descriptions worth trip Send along experiences have tiny Electric Scale jobbies well try keep gang posted Ciao Bill Warner 423 San Vicente Blvd Santa Monica CA 90402 build modern Wakefield go flying us perhaps would alter thinking whether World Competitive Russian Wakefield desIgn features Now lets take look what advanced technology has done FiB design Just remember part competition formula Ron Pol lard Great Britain has written interesting paper describing development Russian Wakefields paper presented SMAE Technical Symposium 1985 Design analysis excerpted follows Note following abbreviations DPR Delayed Prop Release VIT Variable-Incidence Tall AR Auto Rudder VIW Variable-Incidence Wing wish increase climb rate model two options open crease power use power available efficiently power available Wakefield virtually fixed energy-stor age-capacity rubber quality sec ond option open Improved efficiency means reduced drag significance means wing drag Lift drag interrelated given wing section incidence fore lift could reduced zero drag would reduce dramatically trouble theory lift model will climb unless. unless model pointed way wish go upwards steepest angle possibleverti cal practical best climb configuration need look no further designs used Power fliers So get following features WIng airfoil section should have low camber thinfive six percent aspect ratio should range moderate high 121 151 dihedral should rela tively low flat center resist turn Fuselage Short nose long tall moment arm low pylon keep model going straight resist turn Center gravIty Forward location 550/s Continued page 158 156 Model Aviation FF Scale/Warner Continued page 57
Edition: Model Aviation - 1986/09
Page Numbers: 56, 57, 156
Free Flight MINI-ELECTRIC new craze sit Id bet will has MRC come out new rig about 35 bucks smaller Scale sport jobs do-it yourselfers making great strides heard rumors about guys like Ed Toner flying Peanuts electric hearing about aint seeingand seeing believing Well have seen Im impressed Vein Carys little Red Devil Bristol M-1 Ferrell Papic telling about great two-minute Peanut model Mile-Square Park near Los Angeles some time will admit curiosity piqued actually saw air overwhelmed After spending some time Art Overn Vein Cary originators mini-marvel Ferrell doing some interesting things can see future couple months back may remember pre-production shot new V-L small motor featured battery pack shoved right onto geared darling off went featured internal ring gear extra battery cell added two came Another look Yarn Cary/Art Overn electric power system L homemade reduction gear drives prop Y2 speed tiny Scale jobs Note right thrust shaft above motor fixed large gear prop rotate around tube Prop blades plastic cottage-cheese-container material Bill Warner has information column Thats really detached aileron Mac McJunkins plane Rl Macs magic touch masking tape airbrush fooled us secret lies overdoing shadow isthis man L smiling just got 90-second testfiight thatswhy Mike MuliigansCranweii CLA-3 wenton awinner Jumbo Rubber Mikes old hand old-time rubber ships Some Avro Avians R came top wing missing Bob Weaterell flew beautifully i986 Scale Staffel Annual Bob isa master using geared rubber motors uses two smooth flight 56 Model Aviation Sport & Scale Vein Carys Bristol Red Devil features neat plug-in package Its miniature electric powersystemthe motor Isfrom toy car Planes allup weight 40 grams consistently gets two-minute flights motortray R holds motor homemade reduction gear Ni-Cd pack dress snap back end holds plane small lever near prop operates homemade knife switch stock would turn rather respectable prop pull 36-in-span model shorter nose betterif leave batteries standard location planes longer noses guys moving batteries back balance installing switch V-L sells $2495 isnt much awell engineered motor homemade numbers offer lot tinkerer though motors Art Ovem has experi menting withone neatly installed Caiy modelcome toy pen-cell-oper ated electric crs available local toy store Stomper car example though Art says ther better ones available 21 gears having holes centers Small motors also available Edmund Scientific Co peanuts no pun intended Radio Shack source small motors end switches too although Bud Vein preferred homemade knife-type switch store-bought kind since can get less current-resistance own handiwork Art flying Radio Shack motor Pacific Ace suggests combining armature No 723-223 motor end cap carbon brushes No 723228 motor toy motors have carbon brushes worth trouble messing Papic took Stomper motor shimmed magnets 010 toward annatore reduce air gap get zip awaits installation 25-in Cub Overn runs prop directly shaft Radio Shack motor Pacific Ace would seem smaller motors profit gearing Finding just right combination can take some experimentation Obviously Bristol about right Id prefer talk about motor drives prop once two turns motor driven gear prop sharing tube rotates around fixed shaft attached motor just right distance allow teeth mesh binding Bristol has thin brass sheet supports soldered Papic able get right clearance Stomper setup filing flat bottom brass tube mounting bearing side motor casing gear prop mounted shaft Props quick-change being easily driven pin gear being held bit shrink tubing glued thread wound around small notch shaft Batteries pose problem now making good small Ni-Cds work well Bristol uses two 70 mAh cells mill-Ampere hours tandem two 100 mAh cells seem work OK too Overn found best cells made Gould Co surplus electronics store Some toy cars have rechargeable batter ies have charger can always use lantern battery used charge old Petit Brochet Mattel Superstar unit way using old car tall-light bulb circuit cut down voltage bulb glowed brightly first got dimmer batteries model filled up got pretty dim Id fly have adjustable charger can charge 100 mAh cells about two minutes ampere really neat innovation Bristol tray used mount whole power setup slides nose model fastens rear dress snap can easily popped I out charging also comes forward crash helps prevent damage use strip Velcro bottom tray real stroke genius Another Velcro strip glued battery pack meshes perfectly enough prevent battery move ment until want move order shift center gravity trim tried Continued page 156 k September1986 57 Tom Arnoids Martin B-26 Marauder Pres Bruning plans iooks great its beginner can certalniy rewarding project expert modeler Alain Parmentier Montreuli France made keen little Potez 36 Peanut Weight mere 55 grams Photo Parmentier Dick Allens fantasy kind reminds us oid question niany eiephants can get VW Answer Four Two front two back Whatll think next 1429 Fox Dale P1 Sidney OH 45365 clever ruse hinging rudder letting find ____________________________________ felt happiest solve problem FF Duration/Hartill straightened out flights right winners Continued page 59 circle _________________________________________________ Top dog Peanut Clarence Mather Parnall Pixie top Junior Jeff Witt man definitely has knack Tailwind Contester Lacey Ralph Cooke put up fine flights trio Gas jobs Ian Payne slipped fine float-equipped Vultee L-1 third Gas Second Ferrell Papic tried-and-true Astro 02-powered Bleriot 7 taking top honors Bill Stromans Taube CO-2 power Its great flier new one-inch-to-the-foot Bellanca CF four cells takes Astro 02 worked marvelously extra weight really nice thing about electric can always move batteries rearward balance motor prop xeight prop Bristol slotted hub Dick Howards famous cottage-cheese-container plastic blades glued Theyre almost indestruc tible contest scene April May months hard keep up going San Diego Scale Staffel Annual interesting set Otay Mesa about mile Mexican border place alive La Migra US Immigration Naturalization officers well illegals heading north work fields California Just meet got going well moved Navy Seals parachute team could make several drops onto field Still lots great thermals lots neat Scale activity week later off Taft Taft Free Fligliter means space thermals hobnobbing lots people know what doing exactly Memorial Day weekend meet US Free Flight Championships year being number 16 great fun events almost type imaginable both Indoors Out couple non-Free Flight types put evening demonstration precision Quarter-Scale aero batics two Quadra-powered Lasers Both crashed Free Flight planes did year quality flying excellent Scale Taft always fun because have ROG rise off ground great booming thermals can place mediocre models have look fantastic Still models notably mediocre Mike Mulligans Jumbo Rubber Cranwell Parasol Loren Williams Rumpler Bipe Dick Siefrieds 54-inch Me-109 PT-19 making easy flights 1-1/2 two minutes Mulligans ship directionalstability problems last year employed Happy hint Ferrell Papic tells us rubber lube great taking Hot Stuff off fingers took top off bottle Hot Stuff internal pressure built up days heat squirted over placebut luckily eyes rubber-lubing about half hour afterwards Don Srull out spying West Coast secrets DC Maxecuters sald uses baby oil same purpose Ill have try ideas since usually wind up using sanding block 60-grit gamet paper get dang stuff off own bod Just received new Repla-Tech International aircraft catalogs two booklets can get sending $360 company 48500 McKenzie Highway Vida OR 974881 heartily recommend stuff modelers can use way Aeromodeller plans Hirsch raceplane drawings forty-cent black-andwhite snaps Golden Age racers packs color shots covering tons good subjects Tiger Moth pack features ancient brass com passes mahogany instrument panels both cockpits photo packs seem hover around average price 80 cents per snap color some have upwards 40 pictures same plane Some others have five serious about particular plane bargaln catalog descriptions worth trip Send along experiences have tiny Electric Scale jobbies well try keep gang posted Ciao Bill Warner 423 San Vicente Blvd Santa Monica CA 90402 build modern Wakefield go flying us perhaps would alter thinking whether World Competitive Russian Wakefield desIgn features Now lets take look what advanced technology has done FiB design Just remember part competition formula Ron Pol lard Great Britain has written interesting paper describing development Russian Wakefields paper presented SMAE Technical Symposium 1985 Design analysis excerpted follows Note following abbreviations DPR Delayed Prop Release VIT Variable-Incidence Tall AR Auto Rudder VIW Variable-Incidence Wing wish increase climb rate model two options open crease power use power available efficiently power available Wakefield virtually fixed energy-stor age-capacity rubber quality sec ond option open Improved efficiency means reduced drag significance means wing drag Lift drag interrelated given wing section incidence fore lift could reduced zero drag would reduce dramatically trouble theory lift model will climb unless. unless model pointed way wish go upwards steepest angle possibleverti cal practical best climb configuration need look no further designs used Power fliers So get following features WIng airfoil section should have low camber thinfive six percent aspect ratio should range moderate high 121 151 dihedral should rela tively low flat center resist turn Fuselage Short nose long tall moment arm low pylon keep model going straight resist turn Center gravIty Forward location 550/s Continued page 158 156 Model Aviation FF Scale/Warner Continued page 57
