AerobaUcs LAST MONTH looked some cur rent designs stunt planes avail able through reader services however just stubborn enough want try own hand writer will take through crash thats really good word hobby course stunt design appears writer stunt plane design based empirical reason ing rather actual research pure research writer has seen has Al Rabes experiments airfoils series Bill Netzeband published July 1969 through January 1971 MAN did seem practical nor much substantiated Seems rely what worked last plane try couple changes new has pro duced some excellent flying stunt planes however Hold go should first decide what basic Wynn PduI style want classic semi-scale jet pick engine Take look 25 top fliers represented 18 qualifiers 1975 Nationals plus seven others made finals FAT try outs will see ten Supertigre 46s seven OS Max 35s four Fox 35s ST 60 Max 40 K&B 40 HP 40 boils down what like 35 46 power Sting Marty Phillips derives Gierke Novi Max 35 55-in wing Marty third Senior 75 Nab Don Shultz nhntn Next work wing size 35s try 500 550 sq 46s try 600 675 sq Granted see 35-size ships 625 squares 46s 700 often intermediate build er will come out way too heavy large wing reference Nobler kit has 550 sq Akrobat kit has 550 Shark kit has 650 sq next item consider wing aspect ratio defined span squared divided wing area Most recent competitive stunt ships fall category 48 520 1 exam ples Gieseke nobler483 Scorpio 46 483 Werwages USA-l----526 Stiletto 46497 Schaffers Statesman 46490 Since know what wing area what want aspect ratio can find span short article cannot go airfoil design root tip chords attempting should fa miliar stunt airfoils usually range 18 21 percent thick want 35 size copy Nobler ribs want 46 size better get set Scorpio Shark plans use ribs Moving right along force moments far stick tail out behind wing simplicity stunters run around yardsticks like author usually measure front moment distance back face prop leading edge wing fuselage joint rear moment usually defined distance flap horn elevator control horn crack crack Some good combinations have Gieseke 75 FAI Nobler925-14 Shark Pilgrims Sundance 10-17 Werwages USA- 1 10375-17 Genesis 35950-1450 Klapinskis Tempest 35 9125-1375 Schaffers 46 Statesman 9625-1575 Stiletto 4610-175 continued page 91 April 1976 37 Right Bob McDonald 18 years old original Taurus has 53-in wing Max 35 weighs 48 oza ran fourth Senior last Nats W Paul photo Below Dominick DiRiensos Supertigre 46 powered Shark built plans changed tail-dragger Weight 56 ozs wing span 58 New names comma fore Plc Paul THE BEARCAT CORSAIR & SKYRAIDER ARE GREAT ALLAROUND FUN AIRPLANESEXCELLENT COMPETITORS EXTREMELY REALISTIC TREMENDOUS STRENGTH-DURABILITY QUALITY. G-S THE C-S CONTROL SYSTEM IS THE ULTIMATE DEVELOPMENT OF THE FINE SYSTEM THAT MADE NAVY-CARRIER COME ALIVE IT WAS REFINED EXCLUSIVELY FOR THE MODELERTO GIVE HIM RELIABILITY QUALITY AND TOP VALUE FOR HIS INVESTMENT aCS 3-LINE BELLCRANKS$ 495 0 UPEIGITS LONG-SPANHOER ED ORG UPRIGHT SHOETSPONSPANPSVEETEDSOORT-SPON .VALUE. THESE ASSEMBLY MODELS INCLUDE NEW G-S 3-LINE BELLCRANK WITH LEAD-OUT CABLES AT TA C N ED . ALL FINISHED FOR YOU UCTS CORP INTL OUR CLASS OF NEW PRODUCTS WILL STIMULATE MORE FLYING G _____________________________________ CTION WHILE PUOVIDING GREATER SAFETY SUCCESS AND FUN PO BOX 488 LA GRANDE OREGON 97850 US ORDER DIRECTIF NOT AVAILABLE AT YOUR DEALERS CL Aerobatics/Paul continued page 37 lets remember Sea Fury Rabe moments 75-205 Now come what writer calls working areas stabilizer-elevator flaps trend Lhe recent years has toward some very large span stabi lizers up 30 inches 46 Stiletto 24 inches Genesis 35 ob viously amounts area over tailplane An elevator area expressed percentage total wing area includ ing flaps 8 14 percent takes majority competitive stunt planes past few years instance Stunt Machine 35122% stock Nobler88% 46 Stiletto955% Scorpio 4699% Genesis 46111% Gieseke 75 FAI Nobler 98% will note lot elevators 3 inches span root just same sheet size balsa What coincidence area flaps expressed per centage total wing area including flaps again varies 12 17 percent recent competitive airplanes stance look Stunt Machine 35166% Gieseke 75 FAI Nobler13% Scorpio 152% Genesis 4615% Werwages USA-1129% Pauls Pampawagon 46 158% writer purposefully leaving out Bearcat Mustang Al Rabe cause Al warns semi-scale ships present special problems solu tions Better go straight articles plans other similar semiscale airplanes Still us number small yet important items should noted designing stunt job brief bellcrank locationmost plans writer has examined place bellcrank 3 inches back leading edge Some say doesnt matter writer disagrees use 3 safe Use Top Flite Sig 3 bellcrank hook up horns Nobler plans Look local hobby shop dont have framed autographed copy living room like us certain bush horns brass tubing 2 wing sweepbackfrom zero Oriental 2 inches Nobler 2 Werwages USA-I Most com petitive stunt ships have 1 wing panel differencea hot subject some Rabe insists equal panels although notice rebuilt wing 75 Sea Fury has erence ever has load up wing-tip weight 25 oz large 60 powered ship 73 oz Tradition has inch dif ference Nobler Whitelys Miss Kell Hunts Genesis long panel inside circle just combat freaks might reading mis take number fliers trying 1 essfully Stiletto 46 Pilgrims Sundance Genesis 46 Werwage uses 2 no tip weight Lead-out location 4 has touched briefly Netzeband Rabe Charles Mackey initial setting 7 degrees back line through bellcrank par allel trailing edge will give good start Mackey go 10 degrees elliptical wing ship adjustable lead-outs dimension too critical 5 lead-out separation within adjustable fixture can go t stunters using 3/4 1 last two also make easier build fixture may want try Klapinskis Bob Palmer older boys like McFarland Gialdini overand-under style lead-outs theory will get less yawing problems gosh sakes build adjusLable tip weight box though writer has used ones last two Pampawagons whaL heck takes another day build another question answer flying field Gee mister whats thing labeled adjustable tip weight adjustable tip weight Lets see dont forget engine offset 6 writer wants someone tell him actually measure 2-degree engine offset thickness chalk well April 1976 91 THE STRUCTURAL CONCEPT USED IN THIS SERIES OF NEW MODELS IS SO MUCH FUN TO ASSEMBLE WE DONT TERM THEM AS SKITS ASSEMBLY MODELS IS FAR MORE APPROPRIATE SIMPLE AND EASY TO COMPLETE TOUGH DURABLE MODELS--LOOK LIKE THE REAL THING ONCE YOU FINISH ONE YOUVE HAD SO MUCH FUN YOU WILL WANT TO BUILD ANOTHER--AND ANOTHER. EACH PLANE HAS OVER 300 INCHES OF WING AREA SUPER RUGGED DETACHABLE LANDING GEAR DETAILED CLEAR CANOPY FULL SET DECALS PRECISELY SHAPED PARTS AIRFOILED TAIL SURFACES MUCH HARDWARE. INCLUDING SLICK CARRIER-HOOK MECHANISM ETC. FLASH G-S ASSEMBLY MODELS COMING ON STRONG DY RIG FLYERS USING O9-19 ENGINES HANDLE 5995 $ 2495 1 WINGSPAN 38 LENGTH 29 CORSAIR F4U-5 BEARCAT 4% WINGSPAN40$2495 SKYRAIDER AD-6 $2495 WINGSPAN 38LENGTH 29 thats what Art Arfons used garage floor design jet drag car should eliminate small dimension Another item 7 thrust line Thats line running center line propel br hack through entire plane Most stunters line up wing center-line no 1 inch below thrust line OK dihedraled MB-S its lower writer hopes lead-out exit plane within RC Soaring/Pruss continued page 17 book guaranteed help win RC sailplane design contest fur ther guaranteed allow design record-breaking ship above guaranteeing no help whatsoever achieving LSF/Level V book called Great International Paper Airplane Book published Simon Schuster New York mention Just share fun book Seems though back around 1966 politics 551 creating noise plane itself ever could Scientific American thrust line may trouble stabilizer center-lines 1 above thrust line have solid rudder/fin better put some offset ake adjustable writer strongly suggests ordering foam wing either Arnold Stott 628 West 6th St Mankato Minn 56001 Tel 507 388 2728 Bob Hunt 240 Greenbrook Rd Greenbrook NJ 08812 Tel 201 469 1663 will eliminate lot pain possible trouble warps excessive weight Both manufacturers have decided hold First International Paper Airplane Competition coinci dence ad announcing contest ap peared New York newspaper opposite ad aircraft companys detailed case building SST What effects foregoing could have other unknown con test produced some fun far-out de signed flying machines book contains winning planes full-size plan/planes best nearly 12000 entries book 128 pages pure enter tainment $295 never will have much fun folding wing Available through book stores MORE wrOrfl fl same power YELLOW4 PROPELL ~ eeredB ade -esw Tractor G--3 54 erch z6W3 5--4 304 Blade6-3 64354 lsPusher74 76 78 504 t~eseach84 86 88 654 6-36-435410-4 106 854 8548-685411-411-6 11-81 8-68-89-61061 125RC12-4 9-610-63 Blade Tractor12-5 12-6 150 5-35-4 104 iSO6-3 6-4 ORISIl 3SLADI06 Pusher3 Blade Pusher MtaIlic Aluminum Colee150 6-3 STSR OS INDIANA 46373 several very competitive wings pick both 35 46 sizes have what normally takes about 10 pages maybe ten years con densed few paragraphs some prior knowledge some other plans use guidelines someone ready design plane should able come up reasonably good flier Try get someone experienced stunt look plans before start looking balsa address Wynn Paul 1640 Maywick Dr Lex Ky 40504 FA Team Selection As mentioned couple columns back FAI program select US team underway Pro gram manager Jim Simpson says 17 quarter-finals already scheduled six semi-finals final team selection will take place Labor Day week-end Denver has changed Albuquer que Updated information may found Competition News section magazine shorter lead time will per mit printing last-minute happen ings fund raising chairman John Niel sen through generosity has six EK Logictrol radios newly designed super-lightweight ten-speed Schwinn bicycle plus numerous kits other prizes hardware raffled proceeds help finance US Teams trip support will welcome LSF Short/in es 1975 ended membership 1745 over 1100 aspirant files 1745 258 outside USA el IV mem bers now number 61 hn Baxter LSF/024 Steve Work LSF/571 being members attain Level V plans underway LSF Tournament/ 1976 . fornia site San Francisco area anks Clubs sent proceeds 1975 con tests help support League address Rt 2 Box 490 Plainfield Illinois 60544 92 Model Aviation CL Aerobatics continued
Edition: Model Aviation - 1976/04
Page Numbers: 37, 91, 92
AerobaUcs LAST MONTH looked some cur rent designs stunt planes avail able through reader services however just stubborn enough want try own hand writer will take through crash thats really good word hobby course stunt design appears writer stunt plane design based empirical reason ing rather actual research pure research writer has seen has Al Rabes experiments airfoils series Bill Netzeband published July 1969 through January 1971 MAN did seem practical nor much substantiated Seems rely what worked last plane try couple changes new has pro duced some excellent flying stunt planes however Hold go should first decide what basic Wynn PduI style want classic semi-scale jet pick engine Take look 25 top fliers represented 18 qualifiers 1975 Nationals plus seven others made finals FAT try outs will see ten Supertigre 46s seven OS Max 35s four Fox 35s ST 60 Max 40 K&B 40 HP 40 boils down what like 35 46 power Sting Marty Phillips derives Gierke Novi Max 35 55-in wing Marty third Senior 75 Nab Don Shultz nhntn Next work wing size 35s try 500 550 sq 46s try 600 675 sq Granted see 35-size ships 625 squares 46s 700 often intermediate build er will come out way too heavy large wing reference Nobler kit has 550 sq Akrobat kit has 550 Shark kit has 650 sq next item consider wing aspect ratio defined span squared divided wing area Most recent competitive stunt ships fall category 48 520 1 exam ples Gieseke nobler483 Scorpio 46 483 Werwages USA-l----526 Stiletto 46497 Schaffers Statesman 46490 Since know what wing area what want aspect ratio can find span short article cannot go airfoil design root tip chords attempting should fa miliar stunt airfoils usually range 18 21 percent thick want 35 size copy Nobler ribs want 46 size better get set Scorpio Shark plans use ribs Moving right along force moments far stick tail out behind wing simplicity stunters run around yardsticks like author usually measure front moment distance back face prop leading edge wing fuselage joint rear moment usually defined distance flap horn elevator control horn crack crack Some good combinations have Gieseke 75 FAI Nobler925-14 Shark Pilgrims Sundance 10-17 Werwages USA- 1 10375-17 Genesis 35950-1450 Klapinskis Tempest 35 9125-1375 Schaffers 46 Statesman 9625-1575 Stiletto 4610-175 continued page 91 April 1976 37 Right Bob McDonald 18 years old original Taurus has 53-in wing Max 35 weighs 48 oza ran fourth Senior last Nats W Paul photo Below Dominick DiRiensos Supertigre 46 powered Shark built plans changed tail-dragger Weight 56 ozs wing span 58 New names comma fore Plc Paul THE BEARCAT CORSAIR & SKYRAIDER ARE GREAT ALLAROUND FUN AIRPLANESEXCELLENT COMPETITORS EXTREMELY REALISTIC TREMENDOUS STRENGTH-DURABILITY QUALITY. G-S THE C-S CONTROL SYSTEM IS THE ULTIMATE DEVELOPMENT OF THE FINE SYSTEM THAT MADE NAVY-CARRIER COME ALIVE IT WAS REFINED EXCLUSIVELY FOR THE MODELERTO GIVE HIM RELIABILITY QUALITY AND TOP VALUE FOR HIS INVESTMENT aCS 3-LINE BELLCRANKS$ 495 0 UPEIGITS LONG-SPANHOER ED ORG UPRIGHT SHOETSPONSPANPSVEETEDSOORT-SPON .VALUE. THESE ASSEMBLY MODELS INCLUDE NEW G-S 3-LINE BELLCRANK WITH LEAD-OUT CABLES AT TA C N ED . ALL FINISHED FOR YOU UCTS CORP INTL OUR CLASS OF NEW PRODUCTS WILL STIMULATE MORE FLYING G _____________________________________ CTION WHILE PUOVIDING GREATER SAFETY SUCCESS AND FUN PO BOX 488 LA GRANDE OREGON 97850 US ORDER DIRECTIF NOT AVAILABLE AT YOUR DEALERS CL Aerobatics/Paul continued page 37 lets remember Sea Fury Rabe moments 75-205 Now come what writer calls working areas stabilizer-elevator flaps trend Lhe recent years has toward some very large span stabi lizers up 30 inches 46 Stiletto 24 inches Genesis 35 ob viously amounts area over tailplane An elevator area expressed percentage total wing area includ ing flaps 8 14 percent takes majority competitive stunt planes past few years instance Stunt Machine 35122% stock Nobler88% 46 Stiletto955% Scorpio 4699% Genesis 46111% Gieseke 75 FAI Nobler 98% will note lot elevators 3 inches span root just same sheet size balsa What coincidence area flaps expressed per centage total wing area including flaps again varies 12 17 percent recent competitive airplanes stance look Stunt Machine 35166% Gieseke 75 FAI Nobler13% Scorpio 152% Genesis 4615% Werwages USA-1129% Pauls Pampawagon 46 158% writer purposefully leaving out Bearcat Mustang Al Rabe cause Al warns semi-scale ships present special problems solu tions Better go straight articles plans other similar semiscale airplanes Still us number small yet important items should noted designing stunt job brief bellcrank locationmost plans writer has examined place bellcrank 3 inches back leading edge Some say doesnt matter writer disagrees use 3 safe Use Top Flite Sig 3 bellcrank hook up horns Nobler plans Look local hobby shop dont have framed autographed copy living room like us certain bush horns brass tubing 2 wing sweepbackfrom zero Oriental 2 inches Nobler 2 Werwages USA-I Most com petitive stunt ships have 1 wing panel differencea hot subject some Rabe insists equal panels although notice rebuilt wing 75 Sea Fury has erence ever has load up wing-tip weight 25 oz large 60 powered ship 73 oz Tradition has inch dif ference Nobler Whitelys Miss Kell Hunts Genesis long panel inside circle just combat freaks might reading mis take number fliers trying 1 essfully Stiletto 46 Pilgrims Sundance Genesis 46 Werwage uses 2 no tip weight Lead-out location 4 has touched briefly Netzeband Rabe Charles Mackey initial setting 7 degrees back line through bellcrank par allel trailing edge will give good start Mackey go 10 degrees elliptical wing ship adjustable lead-outs dimension too critical 5 lead-out separation within adjustable fixture can go t stunters using 3/4 1 last two also make easier build fixture may want try Klapinskis Bob Palmer older boys like McFarland Gialdini overand-under style lead-outs theory will get less yawing problems gosh sakes build adjusLable tip weight box though writer has used ones last two Pampawagons whaL heck takes another day build another question answer flying field Gee mister whats thing labeled adjustable tip weight adjustable tip weight Lets see dont forget engine offset 6 writer wants someone tell him actually measure 2-degree engine offset thickness chalk well April 1976 91 THE STRUCTURAL CONCEPT USED IN THIS SERIES OF NEW MODELS IS SO MUCH FUN TO ASSEMBLE WE DONT TERM THEM AS SKITS ASSEMBLY MODELS IS FAR MORE APPROPRIATE SIMPLE AND EASY TO COMPLETE TOUGH DURABLE MODELS--LOOK LIKE THE REAL THING ONCE YOU FINISH ONE YOUVE HAD SO MUCH FUN YOU WILL WANT TO BUILD ANOTHER--AND ANOTHER. EACH PLANE HAS OVER 300 INCHES OF WING AREA SUPER RUGGED DETACHABLE LANDING GEAR DETAILED CLEAR CANOPY FULL SET DECALS PRECISELY SHAPED PARTS AIRFOILED TAIL SURFACES MUCH HARDWARE. INCLUDING SLICK CARRIER-HOOK MECHANISM ETC. FLASH G-S ASSEMBLY MODELS COMING ON STRONG DY RIG FLYERS USING O9-19 ENGINES HANDLE 5995 $ 2495 1 WINGSPAN 38 LENGTH 29 CORSAIR F4U-5 BEARCAT 4% WINGSPAN40$2495 SKYRAIDER AD-6 $2495 WINGSPAN 38LENGTH 29 thats what Art Arfons used garage floor design jet drag car should eliminate small dimension Another item 7 thrust line Thats line running center line propel br hack through entire plane Most stunters line up wing center-line no 1 inch below thrust line OK dihedraled MB-S its lower writer hopes lead-out exit plane within RC Soaring/Pruss continued page 17 book guaranteed help win RC sailplane design contest fur ther guaranteed allow design record-breaking ship above guaranteeing no help whatsoever achieving LSF/Level V book called Great International Paper Airplane Book published Simon Schuster New York mention Just share fun book Seems though back around 1966 politics 551 creating noise plane itself ever could Scientific American thrust line may trouble stabilizer center-lines 1 above thrust line have solid rudder/fin better put some offset ake adjustable writer strongly suggests ordering foam wing either Arnold Stott 628 West 6th St Mankato Minn 56001 Tel 507 388 2728 Bob Hunt 240 Greenbrook Rd Greenbrook NJ 08812 Tel 201 469 1663 will eliminate lot pain possible trouble warps excessive weight Both manufacturers have decided hold First International Paper Airplane Competition coinci dence ad announcing contest ap peared New York newspaper opposite ad aircraft companys detailed case building SST What effects foregoing could have other unknown con test produced some fun far-out de signed flying machines book contains winning planes full-size plan/planes best nearly 12000 entries book 128 pages pure enter tainment $295 never will have much fun folding wing Available through book stores MORE wrOrfl fl same power YELLOW4 PROPELL ~ eeredB ade -esw Tractor G--3 54 erch z6W3 5--4 304 Blade6-3 64354 lsPusher74 76 78 504 t~eseach84 86 88 654 6-36-435410-4 106 854 8548-685411-411-6 11-81 8-68-89-61061 125RC12-4 9-610-63 Blade Tractor12-5 12-6 150 5-35-4 104 iSO6-3 6-4 ORISIl 3SLADI06 Pusher3 Blade Pusher MtaIlic Aluminum Colee150 6-3 STSR OS INDIANA 46373 several very competitive wings pick both 35 46 sizes have what normally takes about 10 pages maybe ten years con densed few paragraphs some prior knowledge some other plans use guidelines someone ready design plane should able come up reasonably good flier Try get someone experienced stunt look plans before start looking balsa address Wynn Paul 1640 Maywick Dr Lex Ky 40504 FA Team Selection As mentioned couple columns back FAI program select US team underway Pro gram manager Jim Simpson says 17 quarter-finals already scheduled six semi-finals final team selection will take place Labor Day week-end Denver has changed Albuquer que Updated information may found Competition News section magazine shorter lead time will per mit printing last-minute happen ings fund raising chairman John Niel sen through generosity has six EK Logictrol radios newly designed super-lightweight ten-speed Schwinn bicycle plus numerous kits other prizes hardware raffled proceeds help finance US Teams trip support will welcome LSF Short/in es 1975 ended membership 1745 over 1100 aspirant files 1745 258 outside USA el IV mem bers now number 61 hn Baxter LSF/024 Steve Work LSF/571 being members attain Level V plans underway LSF Tournament/ 1976 . fornia site San Francisco area anks Clubs sent proceeds 1975 con tests help support League address Rt 2 Box 490 Plainfield Illinois 60544 92 Model Aviation CL Aerobatics continued
Edition: Model Aviation - 1976/04
Page Numbers: 37, 91, 92
AerobaUcs LAST MONTH looked some cur rent designs stunt planes avail able through reader services however just stubborn enough want try own hand writer will take through crash thats really good word hobby course stunt design appears writer stunt plane design based empirical reason ing rather actual research pure research writer has seen has Al Rabes experiments airfoils series Bill Netzeband published July 1969 through January 1971 MAN did seem practical nor much substantiated Seems rely what worked last plane try couple changes new has pro duced some excellent flying stunt planes however Hold go should first decide what basic Wynn PduI style want classic semi-scale jet pick engine Take look 25 top fliers represented 18 qualifiers 1975 Nationals plus seven others made finals FAT try outs will see ten Supertigre 46s seven OS Max 35s four Fox 35s ST 60 Max 40 K&B 40 HP 40 boils down what like 35 46 power Sting Marty Phillips derives Gierke Novi Max 35 55-in wing Marty third Senior 75 Nab Don Shultz nhntn Next work wing size 35s try 500 550 sq 46s try 600 675 sq Granted see 35-size ships 625 squares 46s 700 often intermediate build er will come out way too heavy large wing reference Nobler kit has 550 sq Akrobat kit has 550 Shark kit has 650 sq next item consider wing aspect ratio defined span squared divided wing area Most recent competitive stunt ships fall category 48 520 1 exam ples Gieseke nobler483 Scorpio 46 483 Werwages USA-l----526 Stiletto 46497 Schaffers Statesman 46490 Since know what wing area what want aspect ratio can find span short article cannot go airfoil design root tip chords attempting should fa miliar stunt airfoils usually range 18 21 percent thick want 35 size copy Nobler ribs want 46 size better get set Scorpio Shark plans use ribs Moving right along force moments far stick tail out behind wing simplicity stunters run around yardsticks like author usually measure front moment distance back face prop leading edge wing fuselage joint rear moment usually defined distance flap horn elevator control horn crack crack Some good combinations have Gieseke 75 FAI Nobler925-14 Shark Pilgrims Sundance 10-17 Werwages USA- 1 10375-17 Genesis 35950-1450 Klapinskis Tempest 35 9125-1375 Schaffers 46 Statesman 9625-1575 Stiletto 4610-175 continued page 91 April 1976 37 Right Bob McDonald 18 years old original Taurus has 53-in wing Max 35 weighs 48 oza ran fourth Senior last Nats W Paul photo Below Dominick DiRiensos Supertigre 46 powered Shark built plans changed tail-dragger Weight 56 ozs wing span 58 New names comma fore Plc Paul THE BEARCAT CORSAIR & SKYRAIDER ARE GREAT ALLAROUND FUN AIRPLANESEXCELLENT COMPETITORS EXTREMELY REALISTIC TREMENDOUS STRENGTH-DURABILITY QUALITY. G-S THE C-S CONTROL SYSTEM IS THE ULTIMATE DEVELOPMENT OF THE FINE SYSTEM THAT MADE NAVY-CARRIER COME ALIVE IT WAS REFINED EXCLUSIVELY FOR THE MODELERTO GIVE HIM RELIABILITY QUALITY AND TOP VALUE FOR HIS INVESTMENT aCS 3-LINE BELLCRANKS$ 495 0 UPEIGITS LONG-SPANHOER ED ORG UPRIGHT SHOETSPONSPANPSVEETEDSOORT-SPON .VALUE. THESE ASSEMBLY MODELS INCLUDE NEW G-S 3-LINE BELLCRANK WITH LEAD-OUT CABLES AT TA C N ED . ALL FINISHED FOR YOU UCTS CORP INTL OUR CLASS OF NEW PRODUCTS WILL STIMULATE MORE FLYING G _____________________________________ CTION WHILE PUOVIDING GREATER SAFETY SUCCESS AND FUN PO BOX 488 LA GRANDE OREGON 97850 US ORDER DIRECTIF NOT AVAILABLE AT YOUR DEALERS CL Aerobatics/Paul continued page 37 lets remember Sea Fury Rabe moments 75-205 Now come what writer calls working areas stabilizer-elevator flaps trend Lhe recent years has toward some very large span stabi lizers up 30 inches 46 Stiletto 24 inches Genesis 35 ob viously amounts area over tailplane An elevator area expressed percentage total wing area includ ing flaps 8 14 percent takes majority competitive stunt planes past few years instance Stunt Machine 35122% stock Nobler88% 46 Stiletto955% Scorpio 4699% Genesis 46111% Gieseke 75 FAI Nobler 98% will note lot elevators 3 inches span root just same sheet size balsa What coincidence area flaps expressed per centage total wing area including flaps again varies 12 17 percent recent competitive airplanes stance look Stunt Machine 35166% Gieseke 75 FAI Nobler13% Scorpio 152% Genesis 4615% Werwages USA-1129% Pauls Pampawagon 46 158% writer purposefully leaving out Bearcat Mustang Al Rabe cause Al warns semi-scale ships present special problems solu tions Better go straight articles plans other similar semiscale airplanes Still us number small yet important items should noted designing stunt job brief bellcrank locationmost plans writer has examined place bellcrank 3 inches back leading edge Some say doesnt matter writer disagrees use 3 safe Use Top Flite Sig 3 bellcrank hook up horns Nobler plans Look local hobby shop dont have framed autographed copy living room like us certain bush horns brass tubing 2 wing sweepbackfrom zero Oriental 2 inches Nobler 2 Werwages USA-I Most com petitive stunt ships have 1 wing panel differencea hot subject some Rabe insists equal panels although notice rebuilt wing 75 Sea Fury has erence ever has load up wing-tip weight 25 oz large 60 powered ship 73 oz Tradition has inch dif ference Nobler Whitelys Miss Kell Hunts Genesis long panel inside circle just combat freaks might reading mis take number fliers trying 1 essfully Stiletto 46 Pilgrims Sundance Genesis 46 Werwage uses 2 no tip weight Lead-out location 4 has touched briefly Netzeband Rabe Charles Mackey initial setting 7 degrees back line through bellcrank par allel trailing edge will give good start Mackey go 10 degrees elliptical wing ship adjustable lead-outs dimension too critical 5 lead-out separation within adjustable fixture can go t stunters using 3/4 1 last two also make easier build fixture may want try Klapinskis Bob Palmer older boys like McFarland Gialdini overand-under style lead-outs theory will get less yawing problems gosh sakes build adjusLable tip weight box though writer has used ones last two Pampawagons whaL heck takes another day build another question answer flying field Gee mister whats thing labeled adjustable tip weight adjustable tip weight Lets see dont forget engine offset 6 writer wants someone tell him actually measure 2-degree engine offset thickness chalk well April 1976 91 THE STRUCTURAL CONCEPT USED IN THIS SERIES OF NEW MODELS IS SO MUCH FUN TO ASSEMBLE WE DONT TERM THEM AS SKITS ASSEMBLY MODELS IS FAR MORE APPROPRIATE SIMPLE AND EASY TO COMPLETE TOUGH DURABLE MODELS--LOOK LIKE THE REAL THING ONCE YOU FINISH ONE YOUVE HAD SO MUCH FUN YOU WILL WANT TO BUILD ANOTHER--AND ANOTHER. EACH PLANE HAS OVER 300 INCHES OF WING AREA SUPER RUGGED DETACHABLE LANDING GEAR DETAILED CLEAR CANOPY FULL SET DECALS PRECISELY SHAPED PARTS AIRFOILED TAIL SURFACES MUCH HARDWARE. INCLUDING SLICK CARRIER-HOOK MECHANISM ETC. FLASH G-S ASSEMBLY MODELS COMING ON STRONG DY RIG FLYERS USING O9-19 ENGINES HANDLE 5995 $ 2495 1 WINGSPAN 38 LENGTH 29 CORSAIR F4U-5 BEARCAT 4% WINGSPAN40$2495 SKYRAIDER AD-6 $2495 WINGSPAN 38LENGTH 29 thats what Art Arfons used garage floor design jet drag car should eliminate small dimension Another item 7 thrust line Thats line running center line propel br hack through entire plane Most stunters line up wing center-line no 1 inch below thrust line OK dihedraled MB-S its lower writer hopes lead-out exit plane within RC Soaring/Pruss continued page 17 book guaranteed help win RC sailplane design contest fur ther guaranteed allow design record-breaking ship above guaranteeing no help whatsoever achieving LSF/Level V book called Great International Paper Airplane Book published Simon Schuster New York mention Just share fun book Seems though back around 1966 politics 551 creating noise plane itself ever could Scientific American thrust line may trouble stabilizer center-lines 1 above thrust line have solid rudder/fin better put some offset ake adjustable writer strongly suggests ordering foam wing either Arnold Stott 628 West 6th St Mankato Minn 56001 Tel 507 388 2728 Bob Hunt 240 Greenbrook Rd Greenbrook NJ 08812 Tel 201 469 1663 will eliminate lot pain possible trouble warps excessive weight Both manufacturers have decided hold First International Paper Airplane Competition coinci dence ad announcing contest ap peared New York newspaper opposite ad aircraft companys detailed case building SST What effects foregoing could have other unknown con test produced some fun far-out de signed flying machines book contains winning planes full-size plan/planes best nearly 12000 entries book 128 pages pure enter tainment $295 never will have much fun folding wing Available through book stores MORE wrOrfl fl same power YELLOW4 PROPELL ~ eeredB ade -esw Tractor G--3 54 erch z6W3 5--4 304 Blade6-3 64354 lsPusher74 76 78 504 t~eseach84 86 88 654 6-36-435410-4 106 854 8548-685411-411-6 11-81 8-68-89-61061 125RC12-4 9-610-63 Blade Tractor12-5 12-6 150 5-35-4 104 iSO6-3 6-4 ORISIl 3SLADI06 Pusher3 Blade Pusher MtaIlic Aluminum Colee150 6-3 STSR OS INDIANA 46373 several very competitive wings pick both 35 46 sizes have what normally takes about 10 pages maybe ten years con densed few paragraphs some prior knowledge some other plans use guidelines someone ready design plane should able come up reasonably good flier Try get someone experienced stunt look plans before start looking balsa address Wynn Paul 1640 Maywick Dr Lex Ky 40504 FA Team Selection As mentioned couple columns back FAI program select US team underway Pro gram manager Jim Simpson says 17 quarter-finals already scheduled six semi-finals final team selection will take place Labor Day week-end Denver has changed Albuquer que Updated information may found Competition News section magazine shorter lead time will per mit printing last-minute happen ings fund raising chairman John Niel sen through generosity has six EK Logictrol radios newly designed super-lightweight ten-speed Schwinn bicycle plus numerous kits other prizes hardware raffled proceeds help finance US Teams trip support will welcome LSF Short/in es 1975 ended membership 1745 over 1100 aspirant files 1745 258 outside USA el IV mem bers now number 61 hn Baxter LSF/024 Steve Work LSF/571 being members attain Level V plans underway LSF Tournament/ 1976 . fornia site San Francisco area anks Clubs sent proceeds 1975 con tests help support League address Rt 2 Box 490 Plainfield Illinois 60544 92 Model Aviation CL Aerobatics continued