Radio Contml Sport & Aerobatics Ron Van Putte AFTER April column asked revenge Ken Willard correcting about proper definition down wind turn sat back very pleased myself After admitted right deflected letters expected would set up donnybrook would reference situation until letter Ken Willard arrived Now must under stand way view Ken Willard order get feeling what like receive letter him Ken Willard has writing Sun day Flier column Radio Control Model ermagazine decades Ive RC over 30 years have enjoyed reading columns two thirds RC experience have great deal admiration columnist can write column after column quality material long get letter living legend would feel As mentioned earlier writing quality work decided share ex cerpts letter Youve got read first part chuckle mind might get wrong idea Ken wrote April issue MA just arrived Now know didnt write set straight Instead since creative juices dry good half column other half donnybrook about Turnaround As say id kind cheapway get column material Now dont go flying off handle Ron Just joshing bit Actually really enjoyed roasting Besides its first time name column five times Youre gonna make famous Sorry though wont get revenge way suggest received plenty letters tabulated results very surprising Actually four different definitions submitted what constitutes downwind turn Would believe results will appear future column might enjoy Hope dont mind get serious just moment column remark knowsand impor tantly cares have whether like responsibility readers try present factual materi al cares readers look answers Sometimes answers definitive opin ion important Take word guy whos old enough father would feel got let ter Its kind humbling defense what meant knows cares comment impor tant know what correct name particular turn windy conditions long situation understood can call what like its impor tant know what airplane will wind try fly prescribed course Its old rose other name would smell sweet As far writers responsibility present factual material concerned feel Ken correct about too too people will ing accept question material has published newspaper book magazine 10 years Ive written column have always written what Ive believed correct plan continue doing thanks reminder Ken interesting side note got several letters agreeing definition downwind turn after Id admit ted Ken right wrong Before forget againI got letter Suzi Stream Secretary/Treas urer National Society Radio Controlled Aerobatics NSRCA over month ago Suzi asked mention now Secretary/Treasurer NSRCA forgot last month Pattern fliers havent re newed NSRCA membership yet new prospects can write Suzi Stream 3723 Snowden Ave Long Beach CA 90808 enclose $10 1985 NSRCA dues NSRCA dedicated improving Pattern flying good partner AMA besides get monthly newsletter called K-Factor part annual dues 40 Model Aviation Master class f 11cr Roll Shimmer shows off Atlanta Golden Gate Hobbies painted Pactra Formula U spray canal finish good-looking proves fancy spray rigs arent really necessary getting good finishes Steve Roj ecki has given Brushfire design good reputation wherever has flown Now Brushfire Ills availsble Aeroglas Model Developments PO Box 1051 Rockville MD 20850 already has flown first-place win 84 Reno Nets Im subject Pattern fly lug Id like expound favorite subjects other effects wind airplanes keep trying get sport filers have go Pattern flying reason promote often surprise sport fliers Simply said Pattern flying improves flying skills increases enjoy ment sport flying real differ ence between two types flying Pattern flier must particular maneuver specified time sport flier does whatever feels like ing whenever feels like So whats difference Discipline thats what Both types fliers may have same natural talent Pattern flier has produce maneuverswhere theyre supposed done Learning fly Pattern re quires flier concentrate maneu vers way sport fliers seldom long run Pattern flier becomes better flier able what wants airplane wants So enjoys RC flying Isnt what RC about learn fly Pattern really well may get Master class flier receive invitation fly Masters Tournament RC Aerobatics Team Selection Finals other year select three-man team represent United States World Champion ships 1985 Masters Tournament will held June 20-23 1985 Lake Charles LA Lake Charles site 1974 1975 1978 Nats its fine place hold Pattern contest stature Masters Tournament Im looking forward 1985 Masters Tournament 1986 Nats Lake Charles Lake Area Radio Kontrol Society always hosts great contest Inst thing month subject flutter Anyone has RC hobby very long has heard dreaded sound control-surface flutter first full-house RC airplane destroyed flutter back 1964 especially embarrassing because time flutter engineer US Air Force airplane early genera tion Goldberg Senior Falcon turned out early Senior Falcons plagued weak wing spars Senior Falcon wings infamous failing bend ing due flutter Flutter rarely involves single control surface fact purists insist flutter involves least two degrees freedom What sometimes happens wing will oscillate both bending torsion literally feeding other common case modelers involves either wing bending and/or torsion aileron motion Flutter caused aerodynamic forces moments phase motion other words aerodynamic surface being driven direction wants go theres no oscillation phenomenon called divergence Continued page 130 Ready-Built 1/64 Plywood Covered Wing 60 SIZE40 SIZE SUPER LUCKYLITTLE SUPER FLY IILUCKY FLY II REG $13995 REG $11995 SPECIAL S9995SPECIAL 8995 60 Super Lucky Fly ft 40 Little Super Lucky Fly ft both superb air craft sport pattern flyers Prealigned fuselage foam wing 1/64 plywood covering makes either Lucky Fly easy build easy fly THE JC TRAINERS Build half time Jig built balsa fuselage 90% built wing Full size plans Decal forms windshield Excellent instructions first time builder 60 SizeRegular $9995SPECIAL $7995 40 SizeRegular $7995SPECIAL $5995 20 SizeRegular $5495SPECIAL $3995 Ontional Snort Wino VArsions AvaiIhIA t No FrtrR ChRrnA July1985 41 SPECIAL THIS MONTH ONLY! 0 MISS AMERICA Wing Span 84 Inches Wing Chord 12 Inches $6995 Power 30 40 2 Cycle Engine 40 45 4 Cycle Engine Radio 3 Channels DELTA PRIDE 60 Wing Span 58 Inches Wing Chord 14 Inches Power 60 Engine Radio 4 Channels BUCKANEER Wing Span 84 Inches Wing Chord 14 Inches $6995 Power 40 4 Cycle Engine Radio 3 Channels ALL KITS INCLUDE Full size rolled plans Easy-to-follow instructions Machine cut sanded parts Necessary hardware tWPOLD TIMER 11ode/oiaf h#a1y Rt 1 Box 190 a MS 38754 Telephone 601 247-3578 span few F3B kits market still can compete best right hands has already proven great competitor Thermal Duration contests Midway Model Co Hand-launched RC Sailpianes stay number manufacturers getting act being indication its novelty Gnome 60-in-span bird comes fine kit should weigh 12 15 oz built Airfoil Eppler 205 Available Midway Model Co PO Box 9 Midway City CA 92655 Midwest has Lazy Bird Around over year still quite popular Con struction foam wood just right places beef up Features twometer-span model include one-piece bolton wing Its really pleasant departure standard construction Two models have become quite standard around flyingfields Carl Goldbergs Gentle Lady Top Flites Antares products two different companies both models have made marks themselves respec tive categories Gentle Lady Two-Meter class Antares 100-in class Graupuer Robbe two German manufacturers showed popular lines Both companies produce kits include degree prefabrication form ready-to-finish fuselages cov ered foam wings lot models semi-Scale kits complete hardware Hobby Lobby ofBrentwood TN Wilshire Hobbies Los Angeles distribute lines list manufacturers ran Z Z stood Zimbabwe Model Products country same name However company also oper ates out Oak Ridge TN specialty ready-to-fly models However pres ent feature powered planes plans mill pre-built Sailplanes present produce three Sailplane kits Nova 2000 Voyager 2000 Sunbird Wingspans respectively 80 80 110 above list skims surface items oould seen Toledo What ever interests modeling sure get stimulated modified over wacky weekends know went home Phantom Flash Cost $695 RC Aerobatics/Van Putte Continued page 41 wing twists off oscillation called flutter now saying So what Tell avoid flutter out giving sermon its causes Okay Ill problem lot possible solutions flutter no different have to change aerodynamic/mechanical com bination caused flutter first place However thing remem ber flutter always out lurk ing airplane goes fast enough will flutter way another What try make flutter speed higher airplane capable attaining building new airplane make sure aileron linkage strong rigid linkage higher flut ter speed Another way increase flutter speed make leading edge aileron larger wing trailing edge Sealing aileron gap will also delay onset flutter way effectively eliminate aileron flutter balancing ailerons center gravity aileron hinge line aileron will flutter trick getting aileron center gravity hinge line making unsightly mess job Since ailerons hinged front balancing aided making light possible Some modelers think heavy strong ailerons best avoiding flutter opposite true because aileron center gravity usually long distance hinge line Keep ailerons light nothing else works ailerons can balanced using technique illus trated sketch Pieces A6-in music wire can used small fishing weights /6-in wheel collars Balancing achieved aileron neither drops nor rises released neutral position best place install balancing device outboard part wing ailerons driven torque rod attached inboard end aileron center-driven ailerons balancing device either end satisfac tory outboard end often best prevent balancing device snag ging under airplane Give balancing ailerons tryit works Ron Van Putte 111 Sleepy Oaks Rd Ft Walton Beach FL 32S48 RC Soaring/Pruss Continued page 43 featured February March issues magazine GB provides nice security recommended wher ever long cable extensions required Dave Burt out Peansylvania way comes schematic winch system includes couple not-to-be-overlooked safety features second solenoid wired series other should weld itself closed hap pens occasion other will shut down circuit prevent runaway winch other safety feature simply inexpensive pulsing buzzer sounds off whenever arming switch turned left course prevent 130 Model Aviation $5995
Edition: Model Aviation - 1985/07
Page Numbers: 40, 41, 130
Radio Contml Sport & Aerobatics Ron Van Putte AFTER April column asked revenge Ken Willard correcting about proper definition down wind turn sat back very pleased myself After admitted right deflected letters expected would set up donnybrook would reference situation until letter Ken Willard arrived Now must under stand way view Ken Willard order get feeling what like receive letter him Ken Willard has writing Sun day Flier column Radio Control Model ermagazine decades Ive RC over 30 years have enjoyed reading columns two thirds RC experience have great deal admiration columnist can write column after column quality material long get letter living legend would feel As mentioned earlier writing quality work decided share ex cerpts letter Youve got read first part chuckle mind might get wrong idea Ken wrote April issue MA just arrived Now know didnt write set straight Instead since creative juices dry good half column other half donnybrook about Turnaround As say id kind cheapway get column material Now dont go flying off handle Ron Just joshing bit Actually really enjoyed roasting Besides its first time name column five times Youre gonna make famous Sorry though wont get revenge way suggest received plenty letters tabulated results very surprising Actually four different definitions submitted what constitutes downwind turn Would believe results will appear future column might enjoy Hope dont mind get serious just moment column remark knowsand impor tantly cares have whether like responsibility readers try present factual materi al cares readers look answers Sometimes answers definitive opin ion important Take word guy whos old enough father would feel got let ter Its kind humbling defense what meant knows cares comment impor tant know what correct name particular turn windy conditions long situation understood can call what like its impor tant know what airplane will wind try fly prescribed course Its old rose other name would smell sweet As far writers responsibility present factual material concerned feel Ken correct about too too people will ing accept question material has published newspaper book magazine 10 years Ive written column have always written what Ive believed correct plan continue doing thanks reminder Ken interesting side note got several letters agreeing definition downwind turn after Id admit ted Ken right wrong Before forget againI got letter Suzi Stream Secretary/Treas urer National Society Radio Controlled Aerobatics NSRCA over month ago Suzi asked mention now Secretary/Treasurer NSRCA forgot last month Pattern fliers havent re newed NSRCA membership yet new prospects can write Suzi Stream 3723 Snowden Ave Long Beach CA 90808 enclose $10 1985 NSRCA dues NSRCA dedicated improving Pattern flying good partner AMA besides get monthly newsletter called K-Factor part annual dues 40 Model Aviation Master class f 11cr Roll Shimmer shows off Atlanta Golden Gate Hobbies painted Pactra Formula U spray canal finish good-looking proves fancy spray rigs arent really necessary getting good finishes Steve Roj ecki has given Brushfire design good reputation wherever has flown Now Brushfire Ills availsble Aeroglas Model Developments PO Box 1051 Rockville MD 20850 already has flown first-place win 84 Reno Nets Im subject Pattern fly lug Id like expound favorite subjects other effects wind airplanes keep trying get sport filers have go Pattern flying reason promote often surprise sport fliers Simply said Pattern flying improves flying skills increases enjoy ment sport flying real differ ence between two types flying Pattern flier must particular maneuver specified time sport flier does whatever feels like ing whenever feels like So whats difference Discipline thats what Both types fliers may have same natural talent Pattern flier has produce maneuverswhere theyre supposed done Learning fly Pattern re quires flier concentrate maneu vers way sport fliers seldom long run Pattern flier becomes better flier able what wants airplane wants So enjoys RC flying Isnt what RC about learn fly Pattern really well may get Master class flier receive invitation fly Masters Tournament RC Aerobatics Team Selection Finals other year select three-man team represent United States World Champion ships 1985 Masters Tournament will held June 20-23 1985 Lake Charles LA Lake Charles site 1974 1975 1978 Nats its fine place hold Pattern contest stature Masters Tournament Im looking forward 1985 Masters Tournament 1986 Nats Lake Charles Lake Area Radio Kontrol Society always hosts great contest Inst thing month subject flutter Anyone has RC hobby very long has heard dreaded sound control-surface flutter first full-house RC airplane destroyed flutter back 1964 especially embarrassing because time flutter engineer US Air Force airplane early genera tion Goldberg Senior Falcon turned out early Senior Falcons plagued weak wing spars Senior Falcon wings infamous failing bend ing due flutter Flutter rarely involves single control surface fact purists insist flutter involves least two degrees freedom What sometimes happens wing will oscillate both bending torsion literally feeding other common case modelers involves either wing bending and/or torsion aileron motion Flutter caused aerodynamic forces moments phase motion other words aerodynamic surface being driven direction wants go theres no oscillation phenomenon called divergence Continued page 130 Ready-Built 1/64 Plywood Covered Wing 60 SIZE40 SIZE SUPER LUCKYLITTLE SUPER FLY IILUCKY FLY II REG $13995 REG $11995 SPECIAL S9995SPECIAL 8995 60 Super Lucky Fly ft 40 Little Super Lucky Fly ft both superb air craft sport pattern flyers Prealigned fuselage foam wing 1/64 plywood covering makes either Lucky Fly easy build easy fly THE JC TRAINERS Build half time Jig built balsa fuselage 90% built wing Full size plans Decal forms windshield Excellent instructions first time builder 60 SizeRegular $9995SPECIAL $7995 40 SizeRegular $7995SPECIAL $5995 20 SizeRegular $5495SPECIAL $3995 Ontional Snort Wino VArsions AvaiIhIA t No FrtrR ChRrnA July1985 41 SPECIAL THIS MONTH ONLY! 0 MISS AMERICA Wing Span 84 Inches Wing Chord 12 Inches $6995 Power 30 40 2 Cycle Engine 40 45 4 Cycle Engine Radio 3 Channels DELTA PRIDE 60 Wing Span 58 Inches Wing Chord 14 Inches Power 60 Engine Radio 4 Channels BUCKANEER Wing Span 84 Inches Wing Chord 14 Inches $6995 Power 40 4 Cycle Engine Radio 3 Channels ALL KITS INCLUDE Full size rolled plans Easy-to-follow instructions Machine cut sanded parts Necessary hardware tWPOLD TIMER 11ode/oiaf h#a1y Rt 1 Box 190 a MS 38754 Telephone 601 247-3578 span few F3B kits market still can compete best right hands has already proven great competitor Thermal Duration contests Midway Model Co Hand-launched RC Sailpianes stay number manufacturers getting act being indication its novelty Gnome 60-in-span bird comes fine kit should weigh 12 15 oz built Airfoil Eppler 205 Available Midway Model Co PO Box 9 Midway City CA 92655 Midwest has Lazy Bird Around over year still quite popular Con struction foam wood just right places beef up Features twometer-span model include one-piece bolton wing Its really pleasant departure standard construction Two models have become quite standard around flyingfields Carl Goldbergs Gentle Lady Top Flites Antares products two different companies both models have made marks themselves respec tive categories Gentle Lady Two-Meter class Antares 100-in class Graupuer Robbe two German manufacturers showed popular lines Both companies produce kits include degree prefabrication form ready-to-finish fuselages cov ered foam wings lot models semi-Scale kits complete hardware Hobby Lobby ofBrentwood TN Wilshire Hobbies Los Angeles distribute lines list manufacturers ran Z Z stood Zimbabwe Model Products country same name However company also oper ates out Oak Ridge TN specialty ready-to-fly models However pres ent feature powered planes plans mill pre-built Sailplanes present produce three Sailplane kits Nova 2000 Voyager 2000 Sunbird Wingspans respectively 80 80 110 above list skims surface items oould seen Toledo What ever interests modeling sure get stimulated modified over wacky weekends know went home Phantom Flash Cost $695 RC Aerobatics/Van Putte Continued page 41 wing twists off oscillation called flutter now saying So what Tell avoid flutter out giving sermon its causes Okay Ill problem lot possible solutions flutter no different have to change aerodynamic/mechanical com bination caused flutter first place However thing remem ber flutter always out lurk ing airplane goes fast enough will flutter way another What try make flutter speed higher airplane capable attaining building new airplane make sure aileron linkage strong rigid linkage higher flut ter speed Another way increase flutter speed make leading edge aileron larger wing trailing edge Sealing aileron gap will also delay onset flutter way effectively eliminate aileron flutter balancing ailerons center gravity aileron hinge line aileron will flutter trick getting aileron center gravity hinge line making unsightly mess job Since ailerons hinged front balancing aided making light possible Some modelers think heavy strong ailerons best avoiding flutter opposite true because aileron center gravity usually long distance hinge line Keep ailerons light nothing else works ailerons can balanced using technique illus trated sketch Pieces A6-in music wire can used small fishing weights /6-in wheel collars Balancing achieved aileron neither drops nor rises released neutral position best place install balancing device outboard part wing ailerons driven torque rod attached inboard end aileron center-driven ailerons balancing device either end satisfac tory outboard end often best prevent balancing device snag ging under airplane Give balancing ailerons tryit works Ron Van Putte 111 Sleepy Oaks Rd Ft Walton Beach FL 32S48 RC Soaring/Pruss Continued page 43 featured February March issues magazine GB provides nice security recommended wher ever long cable extensions required Dave Burt out Peansylvania way comes schematic winch system includes couple not-to-be-overlooked safety features second solenoid wired series other should weld itself closed hap pens occasion other will shut down circuit prevent runaway winch other safety feature simply inexpensive pulsing buzzer sounds off whenever arming switch turned left course prevent 130 Model Aviation $5995
Edition: Model Aviation - 1985/07
Page Numbers: 40, 41, 130
Radio Contml Sport & Aerobatics Ron Van Putte AFTER April column asked revenge Ken Willard correcting about proper definition down wind turn sat back very pleased myself After admitted right deflected letters expected would set up donnybrook would reference situation until letter Ken Willard arrived Now must under stand way view Ken Willard order get feeling what like receive letter him Ken Willard has writing Sun day Flier column Radio Control Model ermagazine decades Ive RC over 30 years have enjoyed reading columns two thirds RC experience have great deal admiration columnist can write column after column quality material long get letter living legend would feel As mentioned earlier writing quality work decided share ex cerpts letter Youve got read first part chuckle mind might get wrong idea Ken wrote April issue MA just arrived Now know didnt write set straight Instead since creative juices dry good half column other half donnybrook about Turnaround As say id kind cheapway get column material Now dont go flying off handle Ron Just joshing bit Actually really enjoyed roasting Besides its first time name column five times Youre gonna make famous Sorry though wont get revenge way suggest received plenty letters tabulated results very surprising Actually four different definitions submitted what constitutes downwind turn Would believe results will appear future column might enjoy Hope dont mind get serious just moment column remark knowsand impor tantly cares have whether like responsibility readers try present factual materi al cares readers look answers Sometimes answers definitive opin ion important Take word guy whos old enough father would feel got let ter Its kind humbling defense what meant knows cares comment impor tant know what correct name particular turn windy conditions long situation understood can call what like its impor tant know what airplane will wind try fly prescribed course Its old rose other name would smell sweet As far writers responsibility present factual material concerned feel Ken correct about too too people will ing accept question material has published newspaper book magazine 10 years Ive written column have always written what Ive believed correct plan continue doing thanks reminder Ken interesting side note got several letters agreeing definition downwind turn after Id admit ted Ken right wrong Before forget againI got letter Suzi Stream Secretary/Treas urer National Society Radio Controlled Aerobatics NSRCA over month ago Suzi asked mention now Secretary/Treasurer NSRCA forgot last month Pattern fliers havent re newed NSRCA membership yet new prospects can write Suzi Stream 3723 Snowden Ave Long Beach CA 90808 enclose $10 1985 NSRCA dues NSRCA dedicated improving Pattern flying good partner AMA besides get monthly newsletter called K-Factor part annual dues 40 Model Aviation Master class f 11cr Roll Shimmer shows off Atlanta Golden Gate Hobbies painted Pactra Formula U spray canal finish good-looking proves fancy spray rigs arent really necessary getting good finishes Steve Roj ecki has given Brushfire design good reputation wherever has flown Now Brushfire Ills availsble Aeroglas Model Developments PO Box 1051 Rockville MD 20850 already has flown first-place win 84 Reno Nets Im subject Pattern fly lug Id like expound favorite subjects other effects wind airplanes keep trying get sport filers have go Pattern flying reason promote often surprise sport fliers Simply said Pattern flying improves flying skills increases enjoy ment sport flying real differ ence between two types flying Pattern flier must particular maneuver specified time sport flier does whatever feels like ing whenever feels like So whats difference Discipline thats what Both types fliers may have same natural talent Pattern flier has produce maneuverswhere theyre supposed done Learning fly Pattern re quires flier concentrate maneu vers way sport fliers seldom long run Pattern flier becomes better flier able what wants airplane wants So enjoys RC flying Isnt what RC about learn fly Pattern really well may get Master class flier receive invitation fly Masters Tournament RC Aerobatics Team Selection Finals other year select three-man team represent United States World Champion ships 1985 Masters Tournament will held June 20-23 1985 Lake Charles LA Lake Charles site 1974 1975 1978 Nats its fine place hold Pattern contest stature Masters Tournament Im looking forward 1985 Masters Tournament 1986 Nats Lake Charles Lake Area Radio Kontrol Society always hosts great contest Inst thing month subject flutter Anyone has RC hobby very long has heard dreaded sound control-surface flutter first full-house RC airplane destroyed flutter back 1964 especially embarrassing because time flutter engineer US Air Force airplane early genera tion Goldberg Senior Falcon turned out early Senior Falcons plagued weak wing spars Senior Falcon wings infamous failing bend ing due flutter Flutter rarely involves single control surface fact purists insist flutter involves least two degrees freedom What sometimes happens wing will oscillate both bending torsion literally feeding other common case modelers involves either wing bending and/or torsion aileron motion Flutter caused aerodynamic forces moments phase motion other words aerodynamic surface being driven direction wants go theres no oscillation phenomenon called divergence Continued page 130 Ready-Built 1/64 Plywood Covered Wing 60 SIZE40 SIZE SUPER LUCKYLITTLE SUPER FLY IILUCKY FLY II REG $13995 REG $11995 SPECIAL S9995SPECIAL 8995 60 Super Lucky Fly ft 40 Little Super Lucky Fly ft both superb air craft sport pattern flyers Prealigned fuselage foam wing 1/64 plywood covering makes either Lucky Fly easy build easy fly THE JC TRAINERS Build half time Jig built balsa fuselage 90% built wing Full size plans Decal forms windshield Excellent instructions first time builder 60 SizeRegular $9995SPECIAL $7995 40 SizeRegular $7995SPECIAL $5995 20 SizeRegular $5495SPECIAL $3995 Ontional Snort Wino VArsions AvaiIhIA t No FrtrR ChRrnA July1985 41 SPECIAL THIS MONTH ONLY! 0 MISS AMERICA Wing Span 84 Inches Wing Chord 12 Inches $6995 Power 30 40 2 Cycle Engine 40 45 4 Cycle Engine Radio 3 Channels DELTA PRIDE 60 Wing Span 58 Inches Wing Chord 14 Inches Power 60 Engine Radio 4 Channels BUCKANEER Wing Span 84 Inches Wing Chord 14 Inches $6995 Power 40 4 Cycle Engine Radio 3 Channels ALL KITS INCLUDE Full size rolled plans Easy-to-follow instructions Machine cut sanded parts Necessary hardware tWPOLD TIMER 11ode/oiaf h#a1y Rt 1 Box 190 a MS 38754 Telephone 601 247-3578 span few F3B kits market still can compete best right hands has already proven great competitor Thermal Duration contests Midway Model Co Hand-launched RC Sailpianes stay number manufacturers getting act being indication its novelty Gnome 60-in-span bird comes fine kit should weigh 12 15 oz built Airfoil Eppler 205 Available Midway Model Co PO Box 9 Midway City CA 92655 Midwest has Lazy Bird Around over year still quite popular Con struction foam wood just right places beef up Features twometer-span model include one-piece bolton wing Its really pleasant departure standard construction Two models have become quite standard around flyingfields Carl Goldbergs Gentle Lady Top Flites Antares products two different companies both models have made marks themselves respec tive categories Gentle Lady Two-Meter class Antares 100-in class Graupuer Robbe two German manufacturers showed popular lines Both companies produce kits include degree prefabrication form ready-to-finish fuselages cov ered foam wings lot models semi-Scale kits complete hardware Hobby Lobby ofBrentwood TN Wilshire Hobbies Los Angeles distribute lines list manufacturers ran Z Z stood Zimbabwe Model Products country same name However company also oper ates out Oak Ridge TN specialty ready-to-fly models However pres ent feature powered planes plans mill pre-built Sailplanes present produce three Sailplane kits Nova 2000 Voyager 2000 Sunbird Wingspans respectively 80 80 110 above list skims surface items oould seen Toledo What ever interests modeling sure get stimulated modified over wacky weekends know went home Phantom Flash Cost $695 RC Aerobatics/Van Putte Continued page 41 wing twists off oscillation called flutter now saying So what Tell avoid flutter out giving sermon its causes Okay Ill problem lot possible solutions flutter no different have to change aerodynamic/mechanical com bination caused flutter first place However thing remem ber flutter always out lurk ing airplane goes fast enough will flutter way another What try make flutter speed higher airplane capable attaining building new airplane make sure aileron linkage strong rigid linkage higher flut ter speed Another way increase flutter speed make leading edge aileron larger wing trailing edge Sealing aileron gap will also delay onset flutter way effectively eliminate aileron flutter balancing ailerons center gravity aileron hinge line aileron will flutter trick getting aileron center gravity hinge line making unsightly mess job Since ailerons hinged front balancing aided making light possible Some modelers think heavy strong ailerons best avoiding flutter opposite true because aileron center gravity usually long distance hinge line Keep ailerons light nothing else works ailerons can balanced using technique illus trated sketch Pieces A6-in music wire can used small fishing weights /6-in wheel collars Balancing achieved aileron neither drops nor rises released neutral position best place install balancing device outboard part wing ailerons driven torque rod attached inboard end aileron center-driven ailerons balancing device either end satisfac tory outboard end often best prevent balancing device snag ging under airplane Give balancing ailerons tryit works Ron Van Putte 111 Sleepy Oaks Rd Ft Walton Beach FL 32S48 RC Soaring/Pruss Continued page 43 featured February March issues magazine GB provides nice security recommended wher ever long cable extensions required Dave Burt out Peansylvania way comes schematic winch system includes couple not-to-be-overlooked safety features second solenoid wired series other should weld itself closed hap pens occasion other will shut down circuit prevent runaway winch other safety feature simply inexpensive pulsing buzzer sounds off whenever arming switch turned left course prevent 130 Model Aviation $5995