FREE FLIGHT SPORT SCALE U nnnrru f1iri-aLzMIrtm rii-u us aniFU a-i variety pendulums can used spiral stability model airplanes Ill give little background pendulums share got knowledge experience have modeling long have 50 years yeow might remember well-known British modeler PE Norman truly exponent pendulum used make models aerobatics Spectators would stand back marvel well Scale subjects flew early pendulum consisted hanging weight swung left right rudder control back forth elevator control sometimes both directions giving rudder elevator control first attempt use pendulum controlled rudder elevator model Sopwith Tabloid floats first time hand-launched aircraft dove ground Fortunately field very tall grass fired up engine again tried another hand launch similar results Finally light came figured out ran give model good heave mass swung back giving down elevator overcome t toss model about 450 angle helped overall flight wasnt satisfactory An ROW rise off-water would have helpful no water available about same time Jack McCracken built beautiful I-inch 1-foot Staggerwing Beechcraft zero dihedral wings vertical pendulum installed rudder control went out field very tall grass test-flew aircraft First model went pretty tight left turn built up speed turn became steeper steeper until spiraled grass no damage model concluded speed increased Staggerwing went tighter turn centrifugal force caused mass swing outside turn giving unwanted turn Saturday morning Jack went nice ride then-new Marquart Charger biplane landed Hemet CA quite bit sailplane activity got out first Jack said hold test bed can get out handed small plywood board three different pendulum arrangements flying Jack held board up against instrument panel watched configuration particularly turn vertical pendulum did nothing turn just hung speak expected coordinated turn other two arrangements Jacks innovation angled back down swung arc left right difference ones axis vertical bulkhead mounted others axis angled back about 100 latter sensitive Jack decided put Staggerwing After couple weeks new pendulum added Staggerwing went field tall grass see going work worked extremely well still rather steep bank turn pendulum kept safe model impressive during glide would go bank pendulum would pull out Rememberno dihedral position mass made difference since pendulum angled downward bank centrifugal force has no effect because would have overcome gravity Jack sharp excellent model builder convinced would never build Scale model pendulum unless Piper Cub type et al first aircraft incorporated pendulum like Jacks Staggerwing Flylines Kinner Sportster low-wing model did give impression would fly very well some kind help flew beautifully pendulum typical flight pattern fly left circle straighten out would repeated during powered portion flight glide flew less wide circle unless wing dropped too much pendulum would pick up low wing marvelous arent pendulum-equipped Scale Free Eight FF models thing dont see too glow-/diesel-powered Scale models England still build diesel-powered Scale FF models British model magazines get month Ive yet see model pendulum control rather unusual since October1998 129 Bob Oslans de Havilland Beaver PAW 19 diesel 60-inch wingspan Shown El Dorado Dry Lake site 1997 SAM Champs 1967 Nationals Nats Los Alamitos Naval Air Station friend entered Whitman Bonzo FF event Vic Harden built model beautiful wings no dihedral tail scale size meant quite small aileron pendulum control weights out wing No knew Vic coupled up make ailerons work flights firstrate won first place Vic passed away rather suddenly method never learned wife still has model original condition Without pendulum control ailerons aircraft never would have flown did hook up rudder instead since would much easier would simpler its yaw usually brings model down its spiral instability have seen model go out ways after hand launch go awful death spiral What horrendous sight What kind models should incorporate pendulum Most want use scale dihedral Piper Cub has enough dihedral problem spiral stability nor other high-wing configured same Scale model excessive dihedral just doesnt look right biplanes have sufficient dihedral would think pendulum would necessary know field has proverbial tall grass guess can trim trim until work everything out Since us West Coast have luxury want have advantage helping models pendulum am rebuilding Avro 504 did originally have pendulum very successful-flying model after failure decided would never build another Scale model pendulum Flightmasters club having Scale contest September 26-27 Judging will British have done pendulums inmyhomeat3pmSaturdayfollowedbya pastcatered Mexican dinner flying will Probably another reason mostMile Square Park Sunday modelers dont have knowledge inally Internet need correctly put pendulum model orany information E-mail address fkramos @ attnet stancea kind way saying being lazyit takes time install pendulum linkages etc dont want put effort build competitive Scale model have works also path least best opportunity fly successfully 130 Model Aviation her outstanding model Tom Haliman weighs 965 gramswow
Edition: Model Aviation - 1998/10
Page Numbers: 129, 130
Edition: Model Aviation - 1998/10
Page Numbers: 129, 130
FREE FLIGHT SPORT SCALE U nnnrru f1iri-aLzMIrtm rii-u us aniFU a-i variety pendulums can used spiral stability model airplanes Ill give little background pendulums share got knowledge experience have modeling long have 50 years yeow might remember well-known British modeler PE Norman truly exponent pendulum used make models aerobatics Spectators would stand back marvel well Scale subjects flew early pendulum consisted hanging weight swung left right rudder control back forth elevator control sometimes both directions giving rudder elevator control first attempt use pendulum controlled rudder elevator model Sopwith Tabloid floats first time hand-launched aircraft dove ground Fortunately field very tall grass fired up engine again tried another hand launch similar results Finally light came figured out ran give model good heave mass swung back giving down elevator overcome t toss model about 450 angle helped overall flight wasnt satisfactory An ROW rise off-water would have helpful no water available about same time Jack McCracken built beautiful I-inch 1-foot Staggerwing Beechcraft zero dihedral wings vertical pendulum installed rudder control went out field very tall grass test-flew aircraft First model went pretty tight left turn built up speed turn became steeper steeper until spiraled grass no damage model concluded speed increased Staggerwing went tighter turn centrifugal force caused mass swing outside turn giving unwanted turn Saturday morning Jack went nice ride then-new Marquart Charger biplane landed Hemet CA quite bit sailplane activity got out first Jack said hold test bed can get out handed small plywood board three different pendulum arrangements flying Jack held board up against instrument panel watched configuration particularly turn vertical pendulum did nothing turn just hung speak expected coordinated turn other two arrangements Jacks innovation angled back down swung arc left right difference ones axis vertical bulkhead mounted others axis angled back about 100 latter sensitive Jack decided put Staggerwing After couple weeks new pendulum added Staggerwing went field tall grass see going work worked extremely well still rather steep bank turn pendulum kept safe model impressive during glide would go bank pendulum would pull out Rememberno dihedral position mass made difference since pendulum angled downward bank centrifugal force has no effect because would have overcome gravity Jack sharp excellent model builder convinced would never build Scale model pendulum unless Piper Cub type et al first aircraft incorporated pendulum like Jacks Staggerwing Flylines Kinner Sportster low-wing model did give impression would fly very well some kind help flew beautifully pendulum typical flight pattern fly left circle straighten out would repeated during powered portion flight glide flew less wide circle unless wing dropped too much pendulum would pick up low wing marvelous arent pendulum-equipped Scale Free Eight FF models thing dont see too glow-/diesel-powered Scale models England still build diesel-powered Scale FF models British model magazines get month Ive yet see model pendulum control rather unusual since October1998 129 Bob Oslans de Havilland Beaver PAW 19 diesel 60-inch wingspan Shown El Dorado Dry Lake site 1997 SAM Champs 1967 Nationals Nats Los Alamitos Naval Air Station friend entered Whitman Bonzo FF event Vic Harden built model beautiful wings no dihedral tail scale size meant quite small aileron pendulum control weights out wing No knew Vic coupled up make ailerons work flights firstrate won first place Vic passed away rather suddenly method never learned wife still has model original condition Without pendulum control ailerons aircraft never would have flown did hook up rudder instead since would much easier would simpler its yaw usually brings model down its spiral instability have seen model go out ways after hand launch go awful death spiral What horrendous sight What kind models should incorporate pendulum Most want use scale dihedral Piper Cub has enough dihedral problem spiral stability nor other high-wing configured same Scale model excessive dihedral just doesnt look right biplanes have sufficient dihedral would think pendulum would necessary know field has proverbial tall grass guess can trim trim until work everything out Since us West Coast have luxury want have advantage helping models pendulum am rebuilding Avro 504 did originally have pendulum very successful-flying model after failure decided would never build another Scale model pendulum Flightmasters club having Scale contest September 26-27 Judging will British have done pendulums inmyhomeat3pmSaturdayfollowedbya pastcatered Mexican dinner flying will Probably another reason mostMile Square Park Sunday modelers dont have knowledge inally Internet need correctly put pendulum model orany information E-mail address fkramos @ attnet stancea kind way saying being lazyit takes time install pendulum linkages etc dont want put effort build competitive Scale model have works also path least best opportunity fly successfully 130 Model Aviation her outstanding model Tom Haliman weighs 965 gramswow
