JUST BEFORE Toledo Show John Gorham called wanted know Id like visit him Calabassas check new GMP ma chine Legend knew John work ing new Helicopter design emphasis aggressive aerobatics didnt think would ready Toledo debut April agreed meet Saturday morning met John son Robert familiar GMP testing ground Robert already new machine airborne though Robert truly outstanding pilot immediately noticed nicely Legend skating across sky saw consecutive loops rolls great Belgi ums groovy straight flight between ma neuvers Robert saw arrived imme diately landed refueling could get some photos As filled tank chatted about Legends characteristics capabili ties Robert very pleased excited think about Legends potential John asked Id like have go think least two three nanoseconds before responding didnt take much longer get transmitter anxious hands seems too easy perhaps little cold say Legend reminds Cobra belt-driven tail faster cyclic responses Hon estly though thats Legend hovers reflection its much insult say Legend reminds Cobra considering family lineage Curtis Youngblood re cently showed world what could particular rotor head really liked rock-solid feel Legend controls well balanced tight Fourpoint pirouettes easy tail centered ex tremely well needed no coaxing perform its task little windy Legend handled gusts very well knew lightweight craft hovered very steadymore like machine lot mass John approached behind told go ahead put Leg end forward flight thinking about excited happy would about visit bounced new machine especially Toledo Show just five days away feeling being home Hel icopter right start pushed nose down came up power Legend lit erally streaked across field machine def initely accelerates Steep turns wing-overs felt very good looped rolled Legend found maneuvers performed eas ily Cyclic response aerobatic prowess second enough flight time overall impres sion landed model got out old note pad started thinking about would describe new machine Legend small light weight tight word performer John Gorham heads up OMP designing machines figuring out get box lucky have help aggres sive R&D team consisting Robert Gorham Dave Davis Steve Vertrees test ing building necessary perfect new de Continued page 144 Left Flybarless rotor head Legend said work well blades weighing 140 grams over Note mixer halfway down yoke imaginable aerobatics can flown headmore text Right tail rotor gear box slop-free allowing exciting performance July 1988 51 Radio Control Helicopters Larry Jolly 5501 W Conto Santa Ana CA p2703 new Legend prototype Gorham Model Products Its aerobatic machine 60-size engines all-out flying Slated come flybarless rotor belt-driven tall lots op tions will possible owing commonality parts GMP line model Helicopters Left General layout shows takeoff belt-driven tail control linkage swashplate Note anti-rotation pin swashplate slides fork Right servos cooling fan en gine unit assemblies good ideas have brought together Hell Larry says Fiberolass Cowlings Canopies Available Plans sent Post-Paid within USA Send 5O Full Catalog Balsa Order E MODELS byNICKZIROLI Jets too line quality trophies plaques reasonable prices AMA clubs Jim has developed line awards designed especially modelers invites clubs request free brochure Write Jennings Trophy Sales #13 Walton Mall PO Box 1121 Henderson TN 37075 phone number 615 822-0857 RC Pylon Racing/Hager Continued page 50 great time Check-in static judging took place hotel Friday night Although room pro vided hotel purpose what promised mission accomplished Fu ture events will use hotel better suited needs Another minor problem hotel located Sun City accus tomed basic rowdiness Pylon crowd sure glad nobody decided test run late Friday night Friday registration will standard Phoenix Formula event plan come early enjoy weather fa cilities Best Finish award went Keith David son beautiful black Pole Cat Unfortu nately plane argument pylon Saturdayand lost Five complete rounds flown Saturday Sunday again provided beautiful weather ideal conditions speed Lee Van DerHey took fast time time 11003 Several others pursuit 1 lOs unable get down Four rounds flown Sunday Golf carts drivers furnished pro vide high-speed delivety contestants starting line occasions next heat arrived before airplanes landed previous heat sure nice have two runways scores tabulated results follows Bob Smith 2 Lee Van Der Hey Best Timell003 3 Dave Shadel 4 Henry Bartle 5 Mike Helsel Beat FinishKeith Davidson trophies very unique specially made plaque-mounted Arizona auto li cense plates Arizona Department Correc tions sells novelty license plates part its pris industries program ran acroas plates quite some time ago job sher iffs office Phoenix plates make excellent gifts thought would unique inter esting prizes behalf Patrick Stevens Pro Flyers sincerely thank also attend ance hope everyone will make effort tend next event September 24-25 1988 will disappointed lot Racing scheduled year Send write up about club did List top five finishers event entrants showed up Tell racing went plus special happenings Send some pic tures preferably ones showing people competi tion workers spectators will try get column Next mouth Recommended RC frequencies Pylon Racing See races reeponding advertisers mention thatyou read about ModelAviation RC Helicopters/Jolly Continued page 51 sign guys sure helped Legend happen lot sooner otherwise would have Legend designed ship capable contest flyingand especially advanced aerobatics again popular US step evolution GMP line using components common other current mod els Commonality however deter mining factor whether part suitable new model As design evolved weight reduction key goal instance several grams re moved main gear autorotation unit practice applied wherever practical have always found worry about grams ounces will take care themselves certainly true Legend because ready-tofly machine weighs under nine pounds Robert Gorham responsible control layout lot straight runs ser vos well push-pull control rods roll cy clic virtually no slop control sys tem especially appreciate collective fork similar Shuttles makes collective very tight Lets talk about feature probably already have noticed pictures flybarless Bell ro tor system John has done lot work perfecting during last year know some readers will scoff flybarless con trol can assure Legends sys tem works provides stability such would hard pressed tell doesnt have flybarand responds faster powerNEW BLACK BARON IRON ROLL-BARS 144 Model Aviation PRACTICAL SIZED C D-31W Span$4200 F4U CORSAIR2W Span$3000 A6M5ZERO2W pan$3000 CURTISP402W Span$3000 AT-6TEXAN24 Span$3000 FSFBEARCAr2h Span$3000 FOKKER DR-i27 Tripe$2700 Nick Zfroli 29 Edgar Dr Smlthtown NY 11787 USA NEW FLIGHT BOX completely assembled finished kit Carries gallon can bottle Two drawera amall parta Removablelsdluatable fuaelage cradien convertible batterylpower panel compartment Compartments atarterpropaetc Made in USATop Quality wood construction Ergonomically dealgoed handle $125 plus ahippingmoney back guarantee Send $1 specs call 415 363 7732 Flights Fancy aroma dallag PD Box La Honda C. 94020 Exclusive roli-nars roll fillet undetmssbera tOO% Blacketone coating slides almost no adhesive buIldup CTE 420 Babylon Rd Horsham Pa 19044 SYNTHETIC WBRICAN~ CAS7O WBRICAN NITRO AWI1IVES FREE CATALOG lN~FO T Mi 800-242-0489 fully normal Pro-head flybarless system will have make ex cuses should consider what said pre view Legend some details may change before production begins However flew three prototypes am very impressed machines perform ance flexibility As expected come stock kit Legend nine-pound 60-class belt-driven tail flybarless rotor aerobatic rocket ship cause commonalties other GMP ma chines could add other GMP heads 1 1/2-in-longer belt-drive tail stan dard GMP shaft-drive tail could up date Competitor Cobra already own can literally style Legend suit current desires aerobatics Scale FAI competition Pick tail head suit task GMP also working new rotor head us ing proven dampening systembut mid-position underslung flybar way John Gorham works wont take long him fin ish Legend package various acces sories dedicated GMP expects early sum mer release sounds realistic Stay touch GMP dealer further updates So whats new department have apologize readers manufacturers have sent letters and/or products testing have extremely busy last six monthsboth daytime job McDonnell Douglas LIMP am process finishing third three consecutive movies last few months Ive built three fuselage plugs seven Helicoptersnone personal machines though Im doing lot flying havent done Please patient can see day light again really have urge finish up current projects some serious fun fly ing Now spring turning summer Ill bet lot afternoon-evening sport flying go ing over country Boy sure look ward joining fun BCNU Larry Canard Stability/Hunt Continued page 56 No matter what little tricks have preventing canard stalling will always stall before wing because its much smaller size air likes big surfaces run over better small onesReynolds effect Rule #2 Larger elevators canard small deflections better small elevators large deflections probably know also works eleva tors aft-tail aircraft control sur face model airplane Rule #3 Wings should have blunt leading edges and/or sufficient twist washout prevent tips stalling Rule #4 canard large span may wish washout canard tips well wing tips help prevent pre mature stall Rule #5 Get used idea flying airplane looks like its going reverse 100 mph biggest complaints airplane educated spectators can never tell way airplane going Perception problems will crash airplane faster design flaws Rule #6 Seal control surface gaps canard increase effectiveness Suggestion #1 using fixed ca nard trailing edge elevator consider using leading edge droop device pre vent premature canard stall see Fig 4 Suggestion #2 after fussing fighting canard design youre happy stability level still cant get turn tight loop small enough give some thought using thrust vectoring assist canard pitch con trol see Fig 5 very few canard kits mar ket choose event youd like run out buy avail able unfortunately have no personal expe rience have refining jet-look canardtype aircraft better six years have much success fly very well can made very stable modified easily very aerobatic stronghearted pilot short discussion hope have given awareness some com plexities involved making canard air plane flyand intrigued enough will investigate Wonderful World Backwards Flight [When responding advertisers mention read about ModelAviation ment first thing apparent No maxed out Korda places sixth Robert Copland Eng land wins nine three-minute maxes made during entire contest assume Category III rules twominute maxes situation changes little Copland still wins max-out Korda fifth oniy 21 maxes made Zaic flying proxy Vincre France fails tie Copland second Now mean no disrespect Mr Korda other participant contest believe present Old-Timer Rubber fliers flying under current rules would score maxes did 1939 using same designs Ev idence such rash statement will found report 1986 SAM Society Antique ModelersEd Champs appeared October 1986 issue magazine meet Rubber Cabin flown two-minute maxes maxing out being allowed flyoff flight Five maxed out using OldTimer Wakefields three being 1939 Kordas 1936 design weather super-good day either would like share thoughts just fliers today get higher performance worlds best did 1939 designs have changed enforce weight rule judgement few underweight models result think fact total weight of todays Old-Timer Rubber models much different byContinued page 149 July1988 145 FF Old-Timers/Baker Continued page 57
Edition: Model Aviation - 1988/07
Page Numbers: 51, 144, 145
JUST BEFORE Toledo Show John Gorham called wanted know Id like visit him Calabassas check new GMP ma chine Legend knew John work ing new Helicopter design emphasis aggressive aerobatics didnt think would ready Toledo debut April agreed meet Saturday morning met John son Robert familiar GMP testing ground Robert already new machine airborne though Robert truly outstanding pilot immediately noticed nicely Legend skating across sky saw consecutive loops rolls great Belgi ums groovy straight flight between ma neuvers Robert saw arrived imme diately landed refueling could get some photos As filled tank chatted about Legends characteristics capabili ties Robert very pleased excited think about Legends potential John asked Id like have go think least two three nanoseconds before responding didnt take much longer get transmitter anxious hands seems too easy perhaps little cold say Legend reminds Cobra belt-driven tail faster cyclic responses Hon estly though thats Legend hovers reflection its much insult say Legend reminds Cobra considering family lineage Curtis Youngblood re cently showed world what could particular rotor head really liked rock-solid feel Legend controls well balanced tight Fourpoint pirouettes easy tail centered ex tremely well needed no coaxing perform its task little windy Legend handled gusts very well knew lightweight craft hovered very steadymore like machine lot mass John approached behind told go ahead put Leg end forward flight thinking about excited happy would about visit bounced new machine especially Toledo Show just five days away feeling being home Hel icopter right start pushed nose down came up power Legend lit erally streaked across field machine def initely accelerates Steep turns wing-overs felt very good looped rolled Legend found maneuvers performed eas ily Cyclic response aerobatic prowess second enough flight time overall impres sion landed model got out old note pad started thinking about would describe new machine Legend small light weight tight word performer John Gorham heads up OMP designing machines figuring out get box lucky have help aggres sive R&D team consisting Robert Gorham Dave Davis Steve Vertrees test ing building necessary perfect new de Continued page 144 Left Flybarless rotor head Legend said work well blades weighing 140 grams over Note mixer halfway down yoke imaginable aerobatics can flown headmore text Right tail rotor gear box slop-free allowing exciting performance July 1988 51 Radio Control Helicopters Larry Jolly 5501 W Conto Santa Ana CA p2703 new Legend prototype Gorham Model Products Its aerobatic machine 60-size engines all-out flying Slated come flybarless rotor belt-driven tall lots op tions will possible owing commonality parts GMP line model Helicopters Left General layout shows takeoff belt-driven tail control linkage swashplate Note anti-rotation pin swashplate slides fork Right servos cooling fan en gine unit assemblies good ideas have brought together Hell Larry says Fiberolass Cowlings Canopies Available Plans sent Post-Paid within USA Send 5O Full Catalog Balsa Order E MODELS byNICKZIROLI Jets too line quality trophies plaques reasonable prices AMA clubs Jim has developed line awards designed especially modelers invites clubs request free brochure Write Jennings Trophy Sales #13 Walton Mall PO Box 1121 Henderson TN 37075 phone number 615 822-0857 RC Pylon Racing/Hager Continued page 50 great time Check-in static judging took place hotel Friday night Although room pro vided hotel purpose what promised mission accomplished Fu ture events will use hotel better suited needs Another minor problem hotel located Sun City accus tomed basic rowdiness Pylon crowd sure glad nobody decided test run late Friday night Friday registration will standard Phoenix Formula event plan come early enjoy weather fa cilities Best Finish award went Keith David son beautiful black Pole Cat Unfortu nately plane argument pylon Saturdayand lost Five complete rounds flown Saturday Sunday again provided beautiful weather ideal conditions speed Lee Van DerHey took fast time time 11003 Several others pursuit 1 lOs unable get down Four rounds flown Sunday Golf carts drivers furnished pro vide high-speed delivety contestants starting line occasions next heat arrived before airplanes landed previous heat sure nice have two runways scores tabulated results follows Bob Smith 2 Lee Van Der Hey Best Timell003 3 Dave Shadel 4 Henry Bartle 5 Mike Helsel Beat FinishKeith Davidson trophies very unique specially made plaque-mounted Arizona auto li cense plates Arizona Department Correc tions sells novelty license plates part its pris industries program ran acroas plates quite some time ago job sher iffs office Phoenix plates make excellent gifts thought would unique inter esting prizes behalf Patrick Stevens Pro Flyers sincerely thank also attend ance hope everyone will make effort tend next event September 24-25 1988 will disappointed lot Racing scheduled year Send write up about club did List top five finishers event entrants showed up Tell racing went plus special happenings Send some pic tures preferably ones showing people competi tion workers spectators will try get column Next mouth Recommended RC frequencies Pylon Racing See races reeponding advertisers mention thatyou read about ModelAviation RC Helicopters/Jolly Continued page 51 sign guys sure helped Legend happen lot sooner otherwise would have Legend designed ship capable contest flyingand especially advanced aerobatics again popular US step evolution GMP line using components common other current mod els Commonality however deter mining factor whether part suitable new model As design evolved weight reduction key goal instance several grams re moved main gear autorotation unit practice applied wherever practical have always found worry about grams ounces will take care themselves certainly true Legend because ready-tofly machine weighs under nine pounds Robert Gorham responsible control layout lot straight runs ser vos well push-pull control rods roll cy clic virtually no slop control sys tem especially appreciate collective fork similar Shuttles makes collective very tight Lets talk about feature probably already have noticed pictures flybarless Bell ro tor system John has done lot work perfecting during last year know some readers will scoff flybarless con trol can assure Legends sys tem works provides stability such would hard pressed tell doesnt have flybarand responds faster powerNEW BLACK BARON IRON ROLL-BARS 144 Model Aviation PRACTICAL SIZED C D-31W Span$4200 F4U CORSAIR2W Span$3000 A6M5ZERO2W pan$3000 CURTISP402W Span$3000 AT-6TEXAN24 Span$3000 FSFBEARCAr2h Span$3000 FOKKER DR-i27 Tripe$2700 Nick Zfroli 29 Edgar Dr Smlthtown NY 11787 USA NEW FLIGHT BOX completely assembled finished kit Carries gallon can bottle Two drawera amall parta Removablelsdluatable fuaelage cradien convertible batterylpower panel compartment Compartments atarterpropaetc Made in USATop Quality wood construction Ergonomically dealgoed handle $125 plus ahippingmoney back guarantee Send $1 specs call 415 363 7732 Flights Fancy aroma dallag PD Box La Honda C. 94020 Exclusive roli-nars roll fillet undetmssbera tOO% Blacketone coating slides almost no adhesive buIldup CTE 420 Babylon Rd Horsham Pa 19044 SYNTHETIC WBRICAN~ CAS7O WBRICAN NITRO AWI1IVES FREE CATALOG lN~FO T Mi 800-242-0489 fully normal Pro-head flybarless system will have make ex cuses should consider what said pre view Legend some details may change before production begins However flew three prototypes am very impressed machines perform ance flexibility As expected come stock kit Legend nine-pound 60-class belt-driven tail flybarless rotor aerobatic rocket ship cause commonalties other GMP ma chines could add other GMP heads 1 1/2-in-longer belt-drive tail stan dard GMP shaft-drive tail could up date Competitor Cobra already own can literally style Legend suit current desires aerobatics Scale FAI competition Pick tail head suit task GMP also working new rotor head us ing proven dampening systembut mid-position underslung flybar way John Gorham works wont take long him fin ish Legend package various acces sories dedicated GMP expects early sum mer release sounds realistic Stay touch GMP dealer further updates So whats new department have apologize readers manufacturers have sent letters and/or products testing have extremely busy last six monthsboth daytime job McDonnell Douglas LIMP am process finishing third three consecutive movies last few months Ive built three fuselage plugs seven Helicoptersnone personal machines though Im doing lot flying havent done Please patient can see day light again really have urge finish up current projects some serious fun fly ing Now spring turning summer Ill bet lot afternoon-evening sport flying go ing over country Boy sure look ward joining fun BCNU Larry Canard Stability/Hunt Continued page 56 No matter what little tricks have preventing canard stalling will always stall before wing because its much smaller size air likes big surfaces run over better small onesReynolds effect Rule #2 Larger elevators canard small deflections better small elevators large deflections probably know also works eleva tors aft-tail aircraft control sur face model airplane Rule #3 Wings should have blunt leading edges and/or sufficient twist washout prevent tips stalling Rule #4 canard large span may wish washout canard tips well wing tips help prevent pre mature stall Rule #5 Get used idea flying airplane looks like its going reverse 100 mph biggest complaints airplane educated spectators can never tell way airplane going Perception problems will crash airplane faster design flaws Rule #6 Seal control surface gaps canard increase effectiveness Suggestion #1 using fixed ca nard trailing edge elevator consider using leading edge droop device pre vent premature canard stall see Fig 4 Suggestion #2 after fussing fighting canard design youre happy stability level still cant get turn tight loop small enough give some thought using thrust vectoring assist canard pitch con trol see Fig 5 very few canard kits mar ket choose event youd like run out buy avail able unfortunately have no personal expe rience have refining jet-look canardtype aircraft better six years have much success fly very well can made very stable modified easily very aerobatic stronghearted pilot short discussion hope have given awareness some com plexities involved making canard air plane flyand intrigued enough will investigate Wonderful World Backwards Flight [When responding advertisers mention read about ModelAviation ment first thing apparent No maxed out Korda places sixth Robert Copland Eng land wins nine three-minute maxes made during entire contest assume Category III rules twominute maxes situation changes little Copland still wins max-out Korda fifth oniy 21 maxes made Zaic flying proxy Vincre France fails tie Copland second Now mean no disrespect Mr Korda other participant contest believe present Old-Timer Rubber fliers flying under current rules would score maxes did 1939 using same designs Ev idence such rash statement will found report 1986 SAM Society Antique ModelersEd Champs appeared October 1986 issue magazine meet Rubber Cabin flown two-minute maxes maxing out being allowed flyoff flight Five maxed out using OldTimer Wakefields three being 1939 Kordas 1936 design weather super-good day either would like share thoughts just fliers today get higher performance worlds best did 1939 designs have changed enforce weight rule judgement few underweight models result think fact total weight of todays Old-Timer Rubber models much different byContinued page 149 July1988 145 FF Old-Timers/Baker Continued page 57
Edition: Model Aviation - 1988/07
Page Numbers: 51, 144, 145
JUST BEFORE Toledo Show John Gorham called wanted know Id like visit him Calabassas check new GMP ma chine Legend knew John work ing new Helicopter design emphasis aggressive aerobatics didnt think would ready Toledo debut April agreed meet Saturday morning met John son Robert familiar GMP testing ground Robert already new machine airborne though Robert truly outstanding pilot immediately noticed nicely Legend skating across sky saw consecutive loops rolls great Belgi ums groovy straight flight between ma neuvers Robert saw arrived imme diately landed refueling could get some photos As filled tank chatted about Legends characteristics capabili ties Robert very pleased excited think about Legends potential John asked Id like have go think least two three nanoseconds before responding didnt take much longer get transmitter anxious hands seems too easy perhaps little cold say Legend reminds Cobra belt-driven tail faster cyclic responses Hon estly though thats Legend hovers reflection its much insult say Legend reminds Cobra considering family lineage Curtis Youngblood re cently showed world what could particular rotor head really liked rock-solid feel Legend controls well balanced tight Fourpoint pirouettes easy tail centered ex tremely well needed no coaxing perform its task little windy Legend handled gusts very well knew lightweight craft hovered very steadymore like machine lot mass John approached behind told go ahead put Leg end forward flight thinking about excited happy would about visit bounced new machine especially Toledo Show just five days away feeling being home Hel icopter right start pushed nose down came up power Legend lit erally streaked across field machine def initely accelerates Steep turns wing-overs felt very good looped rolled Legend found maneuvers performed eas ily Cyclic response aerobatic prowess second enough flight time overall impres sion landed model got out old note pad started thinking about would describe new machine Legend small light weight tight word performer John Gorham heads up OMP designing machines figuring out get box lucky have help aggres sive R&D team consisting Robert Gorham Dave Davis Steve Vertrees test ing building necessary perfect new de Continued page 144 Left Flybarless rotor head Legend said work well blades weighing 140 grams over Note mixer halfway down yoke imaginable aerobatics can flown headmore text Right tail rotor gear box slop-free allowing exciting performance July 1988 51 Radio Control Helicopters Larry Jolly 5501 W Conto Santa Ana CA p2703 new Legend prototype Gorham Model Products Its aerobatic machine 60-size engines all-out flying Slated come flybarless rotor belt-driven tall lots op tions will possible owing commonality parts GMP line model Helicopters Left General layout shows takeoff belt-driven tail control linkage swashplate Note anti-rotation pin swashplate slides fork Right servos cooling fan en gine unit assemblies good ideas have brought together Hell Larry says Fiberolass Cowlings Canopies Available Plans sent Post-Paid within USA Send 5O Full Catalog Balsa Order E MODELS byNICKZIROLI Jets too line quality trophies plaques reasonable prices AMA clubs Jim has developed line awards designed especially modelers invites clubs request free brochure Write Jennings Trophy Sales #13 Walton Mall PO Box 1121 Henderson TN 37075 phone number 615 822-0857 RC Pylon Racing/Hager Continued page 50 great time Check-in static judging took place hotel Friday night Although room pro vided hotel purpose what promised mission accomplished Fu ture events will use hotel better suited needs Another minor problem hotel located Sun City accus tomed basic rowdiness Pylon crowd sure glad nobody decided test run late Friday night Friday registration will standard Phoenix Formula event plan come early enjoy weather fa cilities Best Finish award went Keith David son beautiful black Pole Cat Unfortu nately plane argument pylon Saturdayand lost Five complete rounds flown Saturday Sunday again provided beautiful weather ideal conditions speed Lee Van DerHey took fast time time 11003 Several others pursuit 1 lOs unable get down Four rounds flown Sunday Golf carts drivers furnished pro vide high-speed delivety contestants starting line occasions next heat arrived before airplanes landed previous heat sure nice have two runways scores tabulated results follows Bob Smith 2 Lee Van Der Hey Best Timell003 3 Dave Shadel 4 Henry Bartle 5 Mike Helsel Beat FinishKeith Davidson trophies very unique specially made plaque-mounted Arizona auto li cense plates Arizona Department Correc tions sells novelty license plates part its pris industries program ran acroas plates quite some time ago job sher iffs office Phoenix plates make excellent gifts thought would unique inter esting prizes behalf Patrick Stevens Pro Flyers sincerely thank also attend ance hope everyone will make effort tend next event September 24-25 1988 will disappointed lot Racing scheduled year Send write up about club did List top five finishers event entrants showed up Tell racing went plus special happenings Send some pic tures preferably ones showing people competi tion workers spectators will try get column Next mouth Recommended RC frequencies Pylon Racing See races reeponding advertisers mention thatyou read about ModelAviation RC Helicopters/Jolly Continued page 51 sign guys sure helped Legend happen lot sooner otherwise would have Legend designed ship capable contest flyingand especially advanced aerobatics again popular US step evolution GMP line using components common other current mod els Commonality however deter mining factor whether part suitable new model As design evolved weight reduction key goal instance several grams re moved main gear autorotation unit practice applied wherever practical have always found worry about grams ounces will take care themselves certainly true Legend because ready-tofly machine weighs under nine pounds Robert Gorham responsible control layout lot straight runs ser vos well push-pull control rods roll cy clic virtually no slop control sys tem especially appreciate collective fork similar Shuttles makes collective very tight Lets talk about feature probably already have noticed pictures flybarless Bell ro tor system John has done lot work perfecting during last year know some readers will scoff flybarless con trol can assure Legends sys tem works provides stability such would hard pressed tell doesnt have flybarand responds faster powerNEW BLACK BARON IRON ROLL-BARS 144 Model Aviation PRACTICAL SIZED C D-31W Span$4200 F4U CORSAIR2W Span$3000 A6M5ZERO2W pan$3000 CURTISP402W Span$3000 AT-6TEXAN24 Span$3000 FSFBEARCAr2h Span$3000 FOKKER DR-i27 Tripe$2700 Nick Zfroli 29 Edgar Dr Smlthtown NY 11787 USA NEW FLIGHT BOX completely assembled finished kit Carries gallon can bottle Two drawera amall parta Removablelsdluatable fuaelage cradien convertible batterylpower panel compartment Compartments atarterpropaetc Made in USATop Quality wood construction Ergonomically dealgoed handle $125 plus ahippingmoney back guarantee Send $1 specs call 415 363 7732 Flights Fancy aroma dallag PD Box La Honda C. 94020 Exclusive roli-nars roll fillet undetmssbera tOO% Blacketone coating slides almost no adhesive buIldup CTE 420 Babylon Rd Horsham Pa 19044 SYNTHETIC WBRICAN~ CAS7O WBRICAN NITRO AWI1IVES FREE CATALOG lN~FO T Mi 800-242-0489 fully normal Pro-head flybarless system will have make ex cuses should consider what said pre view Legend some details may change before production begins However flew three prototypes am very impressed machines perform ance flexibility As expected come stock kit Legend nine-pound 60-class belt-driven tail flybarless rotor aerobatic rocket ship cause commonalties other GMP ma chines could add other GMP heads 1 1/2-in-longer belt-drive tail stan dard GMP shaft-drive tail could up date Competitor Cobra already own can literally style Legend suit current desires aerobatics Scale FAI competition Pick tail head suit task GMP also working new rotor head us ing proven dampening systembut mid-position underslung flybar way John Gorham works wont take long him fin ish Legend package various acces sories dedicated GMP expects early sum mer release sounds realistic Stay touch GMP dealer further updates So whats new department have apologize readers manufacturers have sent letters and/or products testing have extremely busy last six monthsboth daytime job McDonnell Douglas LIMP am process finishing third three consecutive movies last few months Ive built three fuselage plugs seven Helicoptersnone personal machines though Im doing lot flying havent done Please patient can see day light again really have urge finish up current projects some serious fun fly ing Now spring turning summer Ill bet lot afternoon-evening sport flying go ing over country Boy sure look ward joining fun BCNU Larry Canard Stability/Hunt Continued page 56 No matter what little tricks have preventing canard stalling will always stall before wing because its much smaller size air likes big surfaces run over better small onesReynolds effect Rule #2 Larger elevators canard small deflections better small elevators large deflections probably know also works eleva tors aft-tail aircraft control sur face model airplane Rule #3 Wings should have blunt leading edges and/or sufficient twist washout prevent tips stalling Rule #4 canard large span may wish washout canard tips well wing tips help prevent pre mature stall Rule #5 Get used idea flying airplane looks like its going reverse 100 mph biggest complaints airplane educated spectators can never tell way airplane going Perception problems will crash airplane faster design flaws Rule #6 Seal control surface gaps canard increase effectiveness Suggestion #1 using fixed ca nard trailing edge elevator consider using leading edge droop device pre vent premature canard stall see Fig 4 Suggestion #2 after fussing fighting canard design youre happy stability level still cant get turn tight loop small enough give some thought using thrust vectoring assist canard pitch con trol see Fig 5 very few canard kits mar ket choose event youd like run out buy avail able unfortunately have no personal expe rience have refining jet-look canardtype aircraft better six years have much success fly very well can made very stable modified easily very aerobatic stronghearted pilot short discussion hope have given awareness some com plexities involved making canard air plane flyand intrigued enough will investigate Wonderful World Backwards Flight [When responding advertisers mention read about ModelAviation ment first thing apparent No maxed out Korda places sixth Robert Copland Eng land wins nine three-minute maxes made during entire contest assume Category III rules twominute maxes situation changes little Copland still wins max-out Korda fifth oniy 21 maxes made Zaic flying proxy Vincre France fails tie Copland second Now mean no disrespect Mr Korda other participant contest believe present Old-Timer Rubber fliers flying under current rules would score maxes did 1939 using same designs Ev idence such rash statement will found report 1986 SAM Society Antique ModelersEd Champs appeared October 1986 issue magazine meet Rubber Cabin flown two-minute maxes maxing out being allowed flyoff flight Five maxed out using OldTimer Wakefields three being 1939 Kordas 1936 design weather super-good day either would like share thoughts just fliers today get higher performance worlds best did 1939 designs have changed enforce weight rule judgement few underweight models result think fact total weight of todays Old-Timer Rubber models much different byContinued page 149 July1988 145 FF Old-Timers/Baker Continued page 57