Howard Hughes Spruce Goose has around long time until recently rarely modeled eight OS 25s appeared 1980 Kitchener-Waterloo Scale Rally De cember 6 Meyer brothers Spruce Goose eight K&B 61 s repeated history miniature@ Dale Willoughby UNDER bright sunny California skies Prado Regional Park 1/20th-scale model Howard Hughes H-4 Hercules urged eight K&B 61 engines up step lifted offmuch like cork held under water released popping up rapidly occurred sudenly Built Meyer brothers Darrell Merle Orange CA over 10-month period plans furnished Hughes Aircraft Company huge miniature aircraft wing span 16-ft weight just over 80-lb no problem getting off water Total wing area 2857 sq ft 4752 sq wing loading 448 oz per sq ft model famous flying boat Meyers first Scale model though Darrell flown less sophisticated single-engine trainer aircraft ancient plans some 140 some 160 scale secured through efforts Bill Berry stood behind Howard Hughes full-size Hercules took off flew nearly mile Long Beach har bor November 3 1947 Spruce Goose put air-conditioned hangar kept immaculately clean engines fired up periodically ensure flying condition times models fuselage has conventional ply wood formers skinned plywood topped 3-oz K&B fiberglass resin huge wing stabilizer cut foam capped veneer resin ailerons rudder lighter-weight 3/4-oz glass cloth applied Silver K&B epoxy sprayed final finish Meyer brothers helpful hands assisting marvelous miniature air craft John Brodbeck Bobby Tom John Perry engines used Perry pumps 24 Model Aviation Spruce Goose Juniortakes air true scale fashion flew about 10-ft high around 100 yards landedmuch same prototype did 33 years month before carburetors Chip Conklin C&D Enter prises custom-built on-board glow plug driver using eight printed-circuit boards 6V motorcycle battery Glenn Toma Fu taba custom-built transmitter 7296 MHz four sliding controls shutting down engines plus trim knobs throttles found previous Saturdays flo tation tests two outboard engines too powerful used power turn ing inboard engines used pairs maneuvering water Fiber-filled Master Airscrews balanced used first Continued page 103 Bottom view wing center assume showing eight printed circuits edge C&D Enterprises glow driver March 1981 25 Standard Futaba transmitter used fortlight con trols custom-made unit used controlling throttles trim eight engines Triumphantly miniature Spruce Goose taxis back dock after its short significant flight Engines 3 7 8 killed water spray landing Pictures author nor removaoie riignr oec wirn 1 twin-scale models Howard Hughes floppy hat Dave Grant right seat Bill Berry Darrell Meyer foreground watches Big John Elliott carefully lattertunes engine NO maximum thrust Merle Meyer just behind Elliott Lots guys turned out event Plans Hughes Aircraft Hercules H-4 urnisneu tnrougn tne efforts Bill Berry used Meyer brothers 120-scale model Plans different scales integrated Note Assume use Fourmost Racing Pro ducts Gapless Hinge similar instal lation avoid discussion effect control surface gap significant Control surface deflection angle required pullout dive depends very strongly altitude pullout starts Maximum deflection angle usually chosen basis tlight testing minimum angle reliably produces spin entry Let D case D a Elevator parameters Span nches Chord Area 8 sq V 130 mph D therefore F 588 b Elevator Hinge torque F 130 x 130 x 48 x 2 x 0000588 in-oz 3 Now turn box servos pick likely candidate Try Ace RC Atlas Output wheel radius 325 Stroke half-stroke 1 230 ne D 342 7xL1/L2 325/672 Servo torque required L9T 339 x 955 in-oz Servo torque available in-oz Atlas OK Now can see people get away flying large airplanes small servos use small deflection angles fly level much possible simple static analysis does take account shock vibration factors can increase servo requirements bvfactors four must remember thank flying buddies George Druhak Tom Hunt valuable help developing simplified analysis Next month will take up shock vibration factors will calculate servo size Norm Rosenstocks Waco talk bit about pushrod size strength Later will take up subject larger battery packs required support new larger servos Keep letters flowing George M Myers 70 Froehlich Farm Rd Hicks iille NY 11801 Spruce Goose Jr/Willoughby Continued page 25 flight second transmitter 72240 MHz con trolled rudder elevator flaps ailerons fifth sixth channels operated 18 lights included two landing lights wing between engines 3 4 tween 5 6 plus float called taxi lights John Elliott handled flight transmitter Darrell Meyer performed duties flight engineer though feet still dock Other members ground crew started engines synchronized tach checking high low speeds detailed hang onto rud der full-power check What sweet sound eight engines made Throttled back idle huge silver bird carried deposited upon water could just feel excitement 80or-si helpers spectators bystanders taxied out flight Awesome Power 2I3rds Thirst 1980 Features * Improved By-pass Design * Longer Crankshaft/BearIng * Better Balance * Mark X Carburetor $6495 Bushing Schnuerl can lot active flying far less fuel 40 sized engine compared big 60 Probably popular displacement range R/O flying sites Power spare wealth kit designs available Reasonable cost too Hot Line 5011 646-165e MFG CO 5305 TOWSON AVE FORT SMITH ARK 72901 A uthorizecF DQdIO ervice FACTORYAUTHORIZED SERVICE FOR ALL OF THE FOLLOWING BRANDS Ace Aero Sport Cannon Cirrus Kraft World Engines EK Logictrol Micro Avionics Pro Line Orbit Mathes D&D RS Systems Royal Simprop Jerobee ALSO WARRANTY SERVICE EXPERT SER VICE FOR ALL BRANDS Z Don McCarthy Factory trained technicians over 15 years Radio Control Electronics S HOURS Closed Sun & Mon lOam-S pmWedFri lOam-6 pm Sat lOam-2 pm 714 639-8886 941 N MAIN ST ORANGE CALIFORNIA 92667 first flight no length football field approximating flight original Hercules about 10-ft altitude seemed tu mc flew about scale speed descent like Sail plane landinglong protracted did catch pontoon landing spray stop ping three out eight engines did prevent taxiing back point departure waters edge Nearly $5000 has invested un usual project according Meyer broth ers enthusiastic acclaim crowd smiles faces Team Hercu les after first successful flight made well worthwhile Congratulations surely order accomplishment building flying Spruce Goose Junior Aerial Photography/Lodge Continued page 27 screw removed wheel collar attached its set-screw cable servo arm slides freely over cable until presses against wheel collar Position #1 moves Position #2 slides winder its limit servo arm comes back Position #2 Position #1 spring retum camera winder allows wheel collar cable follow servo back takes about 1 slides advance film cable flexible doesnt matter servo goes Position #2 cable will bend upward slider stops half way wind cycle accomplished throttle March 1981 103 THE FOX 4O-RC
Edition: Model Aviation - 1981/03
Page Numbers: 24, 25, 103
Howard Hughes Spruce Goose has around long time until recently rarely modeled eight OS 25s appeared 1980 Kitchener-Waterloo Scale Rally De cember 6 Meyer brothers Spruce Goose eight K&B 61 s repeated history miniature@ Dale Willoughby UNDER bright sunny California skies Prado Regional Park 1/20th-scale model Howard Hughes H-4 Hercules urged eight K&B 61 engines up step lifted offmuch like cork held under water released popping up rapidly occurred sudenly Built Meyer brothers Darrell Merle Orange CA over 10-month period plans furnished Hughes Aircraft Company huge miniature aircraft wing span 16-ft weight just over 80-lb no problem getting off water Total wing area 2857 sq ft 4752 sq wing loading 448 oz per sq ft model famous flying boat Meyers first Scale model though Darrell flown less sophisticated single-engine trainer aircraft ancient plans some 140 some 160 scale secured through efforts Bill Berry stood behind Howard Hughes full-size Hercules took off flew nearly mile Long Beach har bor November 3 1947 Spruce Goose put air-conditioned hangar kept immaculately clean engines fired up periodically ensure flying condition times models fuselage has conventional ply wood formers skinned plywood topped 3-oz K&B fiberglass resin huge wing stabilizer cut foam capped veneer resin ailerons rudder lighter-weight 3/4-oz glass cloth applied Silver K&B epoxy sprayed final finish Meyer brothers helpful hands assisting marvelous miniature air craft John Brodbeck Bobby Tom John Perry engines used Perry pumps 24 Model Aviation Spruce Goose Juniortakes air true scale fashion flew about 10-ft high around 100 yards landedmuch same prototype did 33 years month before carburetors Chip Conklin C&D Enter prises custom-built on-board glow plug driver using eight printed-circuit boards 6V motorcycle battery Glenn Toma Fu taba custom-built transmitter 7296 MHz four sliding controls shutting down engines plus trim knobs throttles found previous Saturdays flo tation tests two outboard engines too powerful used power turn ing inboard engines used pairs maneuvering water Fiber-filled Master Airscrews balanced used first Continued page 103 Bottom view wing center assume showing eight printed circuits edge C&D Enterprises glow driver March 1981 25 Standard Futaba transmitter used fortlight con trols custom-made unit used controlling throttles trim eight engines Triumphantly miniature Spruce Goose taxis back dock after its short significant flight Engines 3 7 8 killed water spray landing Pictures author nor removaoie riignr oec wirn 1 twin-scale models Howard Hughes floppy hat Dave Grant right seat Bill Berry Darrell Meyer foreground watches Big John Elliott carefully lattertunes engine NO maximum thrust Merle Meyer just behind Elliott Lots guys turned out event Plans Hughes Aircraft Hercules H-4 urnisneu tnrougn tne efforts Bill Berry used Meyer brothers 120-scale model Plans different scales integrated Note Assume use Fourmost Racing Pro ducts Gapless Hinge similar instal lation avoid discussion effect control surface gap significant Control surface deflection angle required pullout dive depends very strongly altitude pullout starts Maximum deflection angle usually chosen basis tlight testing minimum angle reliably produces spin entry Let D case D a Elevator parameters Span nches Chord Area 8 sq V 130 mph D therefore F 588 b Elevator Hinge torque F 130 x 130 x 48 x 2 x 0000588 in-oz 3 Now turn box servos pick likely candidate Try Ace RC Atlas Output wheel radius 325 Stroke half-stroke 1 230 ne D 342 7xL1/L2 325/672 Servo torque required L9T 339 x 955 in-oz Servo torque available in-oz Atlas OK Now can see people get away flying large airplanes small servos use small deflection angles fly level much possible simple static analysis does take account shock vibration factors can increase servo requirements bvfactors four must remember thank flying buddies George Druhak Tom Hunt valuable help developing simplified analysis Next month will take up shock vibration factors will calculate servo size Norm Rosenstocks Waco talk bit about pushrod size strength Later will take up subject larger battery packs required support new larger servos Keep letters flowing George M Myers 70 Froehlich Farm Rd Hicks iille NY 11801 Spruce Goose Jr/Willoughby Continued page 25 flight second transmitter 72240 MHz con trolled rudder elevator flaps ailerons fifth sixth channels operated 18 lights included two landing lights wing between engines 3 4 tween 5 6 plus float called taxi lights John Elliott handled flight transmitter Darrell Meyer performed duties flight engineer though feet still dock Other members ground crew started engines synchronized tach checking high low speeds detailed hang onto rud der full-power check What sweet sound eight engines made Throttled back idle huge silver bird carried deposited upon water could just feel excitement 80or-si helpers spectators bystanders taxied out flight Awesome Power 2I3rds Thirst 1980 Features * Improved By-pass Design * Longer Crankshaft/BearIng * Better Balance * Mark X Carburetor $6495 Bushing Schnuerl can lot active flying far less fuel 40 sized engine compared big 60 Probably popular displacement range R/O flying sites Power spare wealth kit designs available Reasonable cost too Hot Line 5011 646-165e MFG CO 5305 TOWSON AVE FORT SMITH ARK 72901 A uthorizecF DQdIO ervice FACTORYAUTHORIZED SERVICE FOR ALL OF THE FOLLOWING BRANDS Ace Aero Sport Cannon Cirrus Kraft World Engines EK Logictrol Micro Avionics Pro Line Orbit Mathes D&D RS Systems Royal Simprop Jerobee ALSO WARRANTY SERVICE EXPERT SER VICE FOR ALL BRANDS Z Don McCarthy Factory trained technicians over 15 years Radio Control Electronics S HOURS Closed Sun & Mon lOam-S pmWedFri lOam-6 pm Sat lOam-2 pm 714 639-8886 941 N MAIN ST ORANGE CALIFORNIA 92667 first flight no length football field approximating flight original Hercules about 10-ft altitude seemed tu mc flew about scale speed descent like Sail plane landinglong protracted did catch pontoon landing spray stop ping three out eight engines did prevent taxiing back point departure waters edge Nearly $5000 has invested un usual project according Meyer broth ers enthusiastic acclaim crowd smiles faces Team Hercu les after first successful flight made well worthwhile Congratulations surely order accomplishment building flying Spruce Goose Junior Aerial Photography/Lodge Continued page 27 screw removed wheel collar attached its set-screw cable servo arm slides freely over cable until presses against wheel collar Position #1 moves Position #2 slides winder its limit servo arm comes back Position #2 Position #1 spring retum camera winder allows wheel collar cable follow servo back takes about 1 slides advance film cable flexible doesnt matter servo goes Position #2 cable will bend upward slider stops half way wind cycle accomplished throttle March 1981 103 THE FOX 4O-RC
Edition: Model Aviation - 1981/03
Page Numbers: 24, 25, 103
Howard Hughes Spruce Goose has around long time until recently rarely modeled eight OS 25s appeared 1980 Kitchener-Waterloo Scale Rally De cember 6 Meyer brothers Spruce Goose eight K&B 61 s repeated history miniature@ Dale Willoughby UNDER bright sunny California skies Prado Regional Park 1/20th-scale model Howard Hughes H-4 Hercules urged eight K&B 61 engines up step lifted offmuch like cork held under water released popping up rapidly occurred sudenly Built Meyer brothers Darrell Merle Orange CA over 10-month period plans furnished Hughes Aircraft Company huge miniature aircraft wing span 16-ft weight just over 80-lb no problem getting off water Total wing area 2857 sq ft 4752 sq wing loading 448 oz per sq ft model famous flying boat Meyers first Scale model though Darrell flown less sophisticated single-engine trainer aircraft ancient plans some 140 some 160 scale secured through efforts Bill Berry stood behind Howard Hughes full-size Hercules took off flew nearly mile Long Beach har bor November 3 1947 Spruce Goose put air-conditioned hangar kept immaculately clean engines fired up periodically ensure flying condition times models fuselage has conventional ply wood formers skinned plywood topped 3-oz K&B fiberglass resin huge wing stabilizer cut foam capped veneer resin ailerons rudder lighter-weight 3/4-oz glass cloth applied Silver K&B epoxy sprayed final finish Meyer brothers helpful hands assisting marvelous miniature air craft John Brodbeck Bobby Tom John Perry engines used Perry pumps 24 Model Aviation Spruce Goose Juniortakes air true scale fashion flew about 10-ft high around 100 yards landedmuch same prototype did 33 years month before carburetors Chip Conklin C&D Enter prises custom-built on-board glow plug driver using eight printed-circuit boards 6V motorcycle battery Glenn Toma Fu taba custom-built transmitter 7296 MHz four sliding controls shutting down engines plus trim knobs throttles found previous Saturdays flo tation tests two outboard engines too powerful used power turn ing inboard engines used pairs maneuvering water Fiber-filled Master Airscrews balanced used first Continued page 103 Bottom view wing center assume showing eight printed circuits edge C&D Enterprises glow driver March 1981 25 Standard Futaba transmitter used fortlight con trols custom-made unit used controlling throttles trim eight engines Triumphantly miniature Spruce Goose taxis back dock after its short significant flight Engines 3 7 8 killed water spray landing Pictures author nor removaoie riignr oec wirn 1 twin-scale models Howard Hughes floppy hat Dave Grant right seat Bill Berry Darrell Meyer foreground watches Big John Elliott carefully lattertunes engine NO maximum thrust Merle Meyer just behind Elliott Lots guys turned out event Plans Hughes Aircraft Hercules H-4 urnisneu tnrougn tne efforts Bill Berry used Meyer brothers 120-scale model Plans different scales integrated Note Assume use Fourmost Racing Pro ducts Gapless Hinge similar instal lation avoid discussion effect control surface gap significant Control surface deflection angle required pullout dive depends very strongly altitude pullout starts Maximum deflection angle usually chosen basis tlight testing minimum angle reliably produces spin entry Let D case D a Elevator parameters Span nches Chord Area 8 sq V 130 mph D therefore F 588 b Elevator Hinge torque F 130 x 130 x 48 x 2 x 0000588 in-oz 3 Now turn box servos pick likely candidate Try Ace RC Atlas Output wheel radius 325 Stroke half-stroke 1 230 ne D 342 7xL1/L2 325/672 Servo torque required L9T 339 x 955 in-oz Servo torque available in-oz Atlas OK Now can see people get away flying large airplanes small servos use small deflection angles fly level much possible simple static analysis does take account shock vibration factors can increase servo requirements bvfactors four must remember thank flying buddies George Druhak Tom Hunt valuable help developing simplified analysis Next month will take up shock vibration factors will calculate servo size Norm Rosenstocks Waco talk bit about pushrod size strength Later will take up subject larger battery packs required support new larger servos Keep letters flowing George M Myers 70 Froehlich Farm Rd Hicks iille NY 11801 Spruce Goose Jr/Willoughby Continued page 25 flight second transmitter 72240 MHz con trolled rudder elevator flaps ailerons fifth sixth channels operated 18 lights included two landing lights wing between engines 3 4 tween 5 6 plus float called taxi lights John Elliott handled flight transmitter Darrell Meyer performed duties flight engineer though feet still dock Other members ground crew started engines synchronized tach checking high low speeds detailed hang onto rud der full-power check What sweet sound eight engines made Throttled back idle huge silver bird carried deposited upon water could just feel excitement 80or-si helpers spectators bystanders taxied out flight Awesome Power 2I3rds Thirst 1980 Features * Improved By-pass Design * Longer Crankshaft/BearIng * Better Balance * Mark X Carburetor $6495 Bushing Schnuerl can lot active flying far less fuel 40 sized engine compared big 60 Probably popular displacement range R/O flying sites Power spare wealth kit designs available Reasonable cost too Hot Line 5011 646-165e MFG CO 5305 TOWSON AVE FORT SMITH ARK 72901 A uthorizecF DQdIO ervice FACTORYAUTHORIZED SERVICE FOR ALL OF THE FOLLOWING BRANDS Ace Aero Sport Cannon Cirrus Kraft World Engines EK Logictrol Micro Avionics Pro Line Orbit Mathes D&D RS Systems Royal Simprop Jerobee ALSO WARRANTY SERVICE EXPERT SER VICE FOR ALL BRANDS Z Don McCarthy Factory trained technicians over 15 years Radio Control Electronics S HOURS Closed Sun & Mon lOam-S pmWedFri lOam-6 pm Sat lOam-2 pm 714 639-8886 941 N MAIN ST ORANGE CALIFORNIA 92667 first flight no length football field approximating flight original Hercules about 10-ft altitude seemed tu mc flew about scale speed descent like Sail plane landinglong protracted did catch pontoon landing spray stop ping three out eight engines did prevent taxiing back point departure waters edge Nearly $5000 has invested un usual project according Meyer broth ers enthusiastic acclaim crowd smiles faces Team Hercu les after first successful flight made well worthwhile Congratulations surely order accomplishment building flying Spruce Goose Junior Aerial Photography/Lodge Continued page 27 screw removed wheel collar attached its set-screw cable servo arm slides freely over cable until presses against wheel collar Position #1 moves Position #2 slides winder its limit servo arm comes back Position #2 Position #1 spring retum camera winder allows wheel collar cable follow servo back takes about 1 slides advance film cable flexible doesnt matter servo goes Position #2 cable will bend upward slider stops half way wind cycle accomplished throttle March 1981 103 THE FOX 4O-RC