SCRATCH DESIGNING Like ardent Scale fliers have scratch designed planes number years practice offers real ad vantages can build fly Scale model favorite plane thats never kitted no plans plans have drawn can make exactly way think should best youll have im mense satisfaction having created own jewel Scale fliers would like scratch design build own ships reluctant try what can fascinating satisfying part modeling Ive heard modelers say think takes special skills experience lack answer always same youve built Scale models kits plans several years youll have few problems designing building own Simply draw outline size want proceed basic con struction techniques perhaps adding some embel lishments own work yes really no difficult So no holding backgo Airfoils Ill short sweet complex difficult subject scratch designing own Scale model use same airfoil full-scale plane information available usually some digging Though sounds perfectly logical Scale designers dont some excep tions good reasons duplicating airfoil used full-scale airplane First heightens scale effect Second since designer full-scale plane good reasons using airfoil take advantage work Third change Wing incidence Ill say same thing said airfoils cases adopt wing cidence used full-scale plane Ive always done its always worked fine Some Scale designers go zero degrees wing incidence models apparently reasoning its good Pattern plane its good Scale planes course using 00 inci dence wont foul up flying characteristics Scale airplanes probable excep tions B-47 B-52 will change attitude fuselage straight level flight instance WW II fighters used several degrees positive incidence wing Bearcat exception re move incidence model will likely assume slightly nose-high attitude during fly bys rather sliehtlv nose-low attitude seen full-size warbirds does nose-low position look much better use fidelity scale whenever possible Scale retracts Scale models airoperated retractable landing gears its real problem slow down operation accu rate scale rate Unfortunately attempting ter air using in-line restrictor doesnt work well pinching air line equally effective time youve slowed things down enough gear usually comes up jerksif comes up 48 Model Aviation Radio Conoi Scale Dan Parsons 11909 Fumier Dr Albuquerque NM 87111 Gene Bartons 100-in P-38 taking off gear almost retracted Dan writes about Scale retracts Left Merlyn Graves big F-15 climbing out after takeoff Note main gear already hidden wells nose gear coming up Center Roy Vaillancourts 92-in Jug quickly cleaned up after lift-off Right Bob Freys P-51 just after takeoff wheels coming up As result air-operated gear retracts practically snap up raises havoc realism destroys prettiest sights Scale RCing So what Easy stall air-hydraulic cylinder air line lead ing gear-raising side air cylinder feeds hydraulic oil automatic transmission oil works fine retract gear cylinder oil can easily metered pinching oil line clamp give completely smooth realistically timed gear retraction Since oil must forced back through restricted line during gear extension youll have same smooth realistically timed action bit messier set up straight air sys tem what difference realism real problem obtaining air-hydraulic cyl inder made own theyve worked flaw lessly MB-5 De Havilland Hornet fighters through hundreds flights over period years Lee Robinson Robinaire Florida working design development airhydraulic cylinders use youre inter ested give him call 1-305/439-6965 Flight controls check models have met demise taking off ai lerons reversed Often rather new planes maiden flights victims veteran planes just back repairs servo replace ment pilot probably checked aile rons worked didnt realize controls reversed prevent such catastrophe go step beyond checklist includes making sure control surfaces move correct direction before flight Though may sound like overkill end justifies means Eventually preflight check routine should become grained much like automatic reflex action Ill never have worry about taking off flight control surfaces reversed simple step may someday save favor ite planeand save kicking tail being careless Aborting takeoff Weve seen models sud denly turn fly through pilots line during takeoff run careen through pits scattering people directions wondering pilot didnt throttle back abort takeoff right beginning Despite obvious dangers such out-ofcontrol missile poses little ever said written done about problem Ive seen model ers laugh joke about over PA system have some suggestions pilots greatly reduce serious threat people other models offending model itself Continued page 154 LET WATER FEVER TAKE YOU OVERE LANIER RCs SEA BIRD CAT NO 87206 EXPLORE THE ADVANTAGES OF WATER FLYING WITH THIS SUPER INTERMEDIATE TRAINER Fuselage Length 45 Rec Engine Size 40-60 60-80 4 Stroke Flying Weight 5-6 lbs Wing Span 60 Area 630 sq Radio Channels 4 WRITE TODAY FOR YOUR FREE COLOR CATALOG PC Box 458Oakwood GA 30566404-532-6401 MADE IN THE USA B9* SMITh ZIUDUDWRZRD 7550 Sen Gabeel 5050 cedeo CA 93422 460-1717 January 1990 49 Frank Noll flies authors Havilland Hor net allowing Dan get picture own plane Noll proceeded thoroughly wring out Hornet photos Parsons $975AVAILABLE AT AMERICAS$525 FINEST HOBBY SHOPS DISTRIBUTED BY 1943 vintage 2 Model shall capable ROG rise-off groundEd 3 Powered sailpianes acceptable 4 Although models will judged scale reasonable effort should made real istically simulate color markings 5 Minimum wing loadings 8 oz/sq ft monoplanes 6 oz/sq ft multiwings 6 Model shall powered Cox 049 reed-valve-type engines having maximum fuel tank capacity 8cc No throttles allowed No die sels allowed Maximum prop diameter allowed 8 Only commercially available glow fuel al lowed 7 Model balsa/plywood construc tion Foam can used details 8 No foam ARFs almost-ready-to-fly al lowed 9 Plan three-view needed confirmation 10 The bottom line model must re semble full-scale plane era 11 All flying scoring regulations pertain ing SAM hA Texaco will apply event sounds like fun contact Jack Brown 1446 Red Jacket Rd Grand Island NY 14072 information Personally can see catching like gang busters Consider enlarging classic Stahl Struhl Comet Megow etc designs around 300 sq wing area adding twochannel micro-sized radio system seeing thing thermal like Texaco turns about San Diego Aeroneersand especially Bob Munnhave also developing Scale Dura tion eventbut limited Space doesnt permit comprehensive review rules However interested should contact Jim Alaback 16634 Diaz Drive San Diego CA 92128 Finally I recently opportunity tour new Boeing Museum Seattle Anyone interest aviation history would enjoy dis plays much did particularly im pressed use largish models complement displays much better little plastic models often seen have no idea might have built work manship coloration impressive have opportunity tour recon structed San Diego Museum understand features display models well large display modeling memorabilia much orga nized SAM Chapter 41 its members Additionally have informed Kal amazoo Michigan Aviation Historical Museum has recently added reproduction Good brothers Guff RC model its display orig inal Guff resides Smithsonian Walter Pompey built replica Good twins residents Kalamazoo time originals construction flights Obviously model also adds considerably museum RC Scale/Parsons Contued page 49 First its own experience abort ing takeoff pulling throttle back things go awry learned reflex some rea son once theyve advanced throttle full power modelers inclined leave through thick thin airplane veers Out control its almost pilot has frozen cant respond urge pilots think problem through teach themselves properly abort takeoff Since always judgment call isnt al ways easy know takes prac tice important pilot should think about before takeoff prepared immediately pull back throttle case trou ble Having flown tail-dragger twins years Ive lots aborting practice fact De Havilland Hornet aborts takeoffs first 50 60 flights Smooth flying other factor fosters illusion full-scale performance trainers sport planes appear au thentic arcing smoothly through air Simulating full-scale flight means maintaining such steady control movements smooth no jerkiness jumping around whether flying straight level doing maneu vers entering exiting turns maneuvers smooth accurate proportional con trol provided todays marvelous radios recently soloed RCer can fly smoothly windy gusty weather excepted takes con stantly think smooth communicate through fingers transmitter make easier hold sticks fingers Ive used neck strap support trans mitter ever since getting first proportional ra dio 1964 saxophone strap available music stores works great Because its quick easy adjust tach transmitter saxophone strap much better strap furnished ra dio sets Its well worth four five dollars youll pay quest smoothest flying possible Sport Aerobatic 55 span 51 length 4 channel 141/20 swept wing Symetrical Airfoil Engine 45 602 cv Kit includes rolled plans cut sanded pans formed landing gear wheel asels steerable tail wheel bracket push rod set other basic hardware Kleen Sweep 87995 $500 P8 HI Check MO 60 804cyVisa MC Write far free cat Other Kits Avail 317 525-9074 CrenshawAeroRR 1 Box 121 ManIlla IN 46150 TKebuIll R/C Idle-Bar Glow Plugs Long Short Also.Only $189 Traditional line non-idle bar Glow Plugs Six Types 3 Heat Ranges High Performance Glow Element Blow Proof Seal Only $149 Swanson Associates PO Box 151 S,s r948 Wayne NJ 07470 154 Model Aviation AIR WOLF EPOXY FIBERGLASS FUSELAGES TAKES MOST 50-60 MECHANICS OTHER MODELS AVAILABLE LARRY JOLLY MODEL PRODUCTS $21000 5501 WCOMO SANTA ANA CALIFORNIA 92703 714 826-6861 some fliers go beyond neck strap use tray support transmitter also pro vides guiding support hands have opportunity see outstanding Scale builder pilot Dennis Crooks flying stable ducted fans note uses transmit ter tray course Hanno Prettner has us ing tray years Enough said RC Electrics/Kopski Continued page 51 Futaba speed control high-rate device dont know plan find out tell next month must say theres high level reader interest high-rate/frame-rate mat ter reaction personal preferences men tioned October column See below So good things Futaba Electric receiver seems have going concerns Yes First question raised reader Harding Orren Rancho Mi rage CA would apply BEC installa tion question concerns fusing power sys tem near batterybefore BEC circuit Yup sure sounds like trouble should fuse blow some reason youre flight did RC would suddenly become Free Flight Frankly despite fact obvious question personally never considered case always fuse right battery its also case dont have BEC de vices use As understand Futaba re ceiver has protection circuitry shut motor down case fault condition occurring However would protect battery RC DESIGNS WEASEL Engine size 40-502 cycle Hardware included Foam Balsa 84 R C DESIGNS 75 Price Dr Wilmington OH 45177 513-382-2158 Hrs 4-8 pm accept 12-8 pm Mon-Fri MasterCard & Visa Saturdays associated wiring ahead receiver should short occur Its something think about now personal preference prefer de termine shut down motor prefer have determined monitor BEC circuit developed preference hard way time someone elses plane out far low BEC circuit did its thing wary folks Keep watch read stopwatch plane good ideaBEC cause youll soon learn its time hang close field Anyway BEC bittersweet very idea having receiver battery weight very appealing independence given simply having supplementary battery pack also very appealing Decisions decisions now heres closing offering Fu taba product As mentioned above designed shut down should overload occur Apparently sensed parameter heat MOS FETS metal-oxide-semiconductor field-effect transistorsEd used speed control circui try get too hot shuts down modeler know running cobalt 05 fairly hard receiver speed control working quite hard motor routinely shut down prematurely corrected situation installing small air scoop near receiver MOSFETS adding corresponding nearby air exit Presto heat consequently shutdown went away speed-control rate matter mentioned October column has brought quite bit reader interestand advance De cember column wont streets about month time January column being written can hardly wait see reader reaction December column Continued January 1990 155 AELECTRIC SEMI-SCALE Radio Control Sport/Trainer Wing span 67 3/4 Length 37 l/2 PAUL K GUILLOW INC WAKEFIELD MA 01880
Edition: Model Aviation - 1990/01
Page Numbers: 48, 49, 154, 155
SCRATCH DESIGNING Like ardent Scale fliers have scratch designed planes number years practice offers real ad vantages can build fly Scale model favorite plane thats never kitted no plans plans have drawn can make exactly way think should best youll have im mense satisfaction having created own jewel Scale fliers would like scratch design build own ships reluctant try what can fascinating satisfying part modeling Ive heard modelers say think takes special skills experience lack answer always same youve built Scale models kits plans several years youll have few problems designing building own Simply draw outline size want proceed basic con struction techniques perhaps adding some embel lishments own work yes really no difficult So no holding backgo Airfoils Ill short sweet complex difficult subject scratch designing own Scale model use same airfoil full-scale plane information available usually some digging Though sounds perfectly logical Scale designers dont some excep tions good reasons duplicating airfoil used full-scale airplane First heightens scale effect Second since designer full-scale plane good reasons using airfoil take advantage work Third change Wing incidence Ill say same thing said airfoils cases adopt wing cidence used full-scale plane Ive always done its always worked fine Some Scale designers go zero degrees wing incidence models apparently reasoning its good Pattern plane its good Scale planes course using 00 inci dence wont foul up flying characteristics Scale airplanes probable excep tions B-47 B-52 will change attitude fuselage straight level flight instance WW II fighters used several degrees positive incidence wing Bearcat exception re move incidence model will likely assume slightly nose-high attitude during fly bys rather sliehtlv nose-low attitude seen full-size warbirds does nose-low position look much better use fidelity scale whenever possible Scale retracts Scale models airoperated retractable landing gears its real problem slow down operation accu rate scale rate Unfortunately attempting ter air using in-line restrictor doesnt work well pinching air line equally effective time youve slowed things down enough gear usually comes up jerksif comes up 48 Model Aviation Radio Conoi Scale Dan Parsons 11909 Fumier Dr Albuquerque NM 87111 Gene Bartons 100-in P-38 taking off gear almost retracted Dan writes about Scale retracts Left Merlyn Graves big F-15 climbing out after takeoff Note main gear already hidden wells nose gear coming up Center Roy Vaillancourts 92-in Jug quickly cleaned up after lift-off Right Bob Freys P-51 just after takeoff wheels coming up As result air-operated gear retracts practically snap up raises havoc realism destroys prettiest sights Scale RCing So what Easy stall air-hydraulic cylinder air line lead ing gear-raising side air cylinder feeds hydraulic oil automatic transmission oil works fine retract gear cylinder oil can easily metered pinching oil line clamp give completely smooth realistically timed gear retraction Since oil must forced back through restricted line during gear extension youll have same smooth realistically timed action bit messier set up straight air sys tem what difference realism real problem obtaining air-hydraulic cyl inder made own theyve worked flaw lessly MB-5 De Havilland Hornet fighters through hundreds flights over period years Lee Robinson Robinaire Florida working design development airhydraulic cylinders use youre inter ested give him call 1-305/439-6965 Flight controls check models have met demise taking off ai lerons reversed Often rather new planes maiden flights victims veteran planes just back repairs servo replace ment pilot probably checked aile rons worked didnt realize controls reversed prevent such catastrophe go step beyond checklist includes making sure control surfaces move correct direction before flight Though may sound like overkill end justifies means Eventually preflight check routine should become grained much like automatic reflex action Ill never have worry about taking off flight control surfaces reversed simple step may someday save favor ite planeand save kicking tail being careless Aborting takeoff Weve seen models sud denly turn fly through pilots line during takeoff run careen through pits scattering people directions wondering pilot didnt throttle back abort takeoff right beginning Despite obvious dangers such out-ofcontrol missile poses little ever said written done about problem Ive seen model ers laugh joke about over PA system have some suggestions pilots greatly reduce serious threat people other models offending model itself Continued page 154 LET WATER FEVER TAKE YOU OVERE LANIER RCs SEA BIRD CAT NO 87206 EXPLORE THE ADVANTAGES OF WATER FLYING WITH THIS SUPER INTERMEDIATE TRAINER Fuselage Length 45 Rec Engine Size 40-60 60-80 4 Stroke Flying Weight 5-6 lbs Wing Span 60 Area 630 sq Radio Channels 4 WRITE TODAY FOR YOUR FREE COLOR CATALOG PC Box 458Oakwood GA 30566404-532-6401 MADE IN THE USA B9* SMITh ZIUDUDWRZRD 7550 Sen Gabeel 5050 cedeo CA 93422 460-1717 January 1990 49 Frank Noll flies authors Havilland Hor net allowing Dan get picture own plane Noll proceeded thoroughly wring out Hornet photos Parsons $975AVAILABLE AT AMERICAS$525 FINEST HOBBY SHOPS DISTRIBUTED BY 1943 vintage 2 Model shall capable ROG rise-off groundEd 3 Powered sailpianes acceptable 4 Although models will judged scale reasonable effort should made real istically simulate color markings 5 Minimum wing loadings 8 oz/sq ft monoplanes 6 oz/sq ft multiwings 6 Model shall powered Cox 049 reed-valve-type engines having maximum fuel tank capacity 8cc No throttles allowed No die sels allowed Maximum prop diameter allowed 8 Only commercially available glow fuel al lowed 7 Model balsa/plywood construc tion Foam can used details 8 No foam ARFs almost-ready-to-fly al lowed 9 Plan three-view needed confirmation 10 The bottom line model must re semble full-scale plane era 11 All flying scoring regulations pertain ing SAM hA Texaco will apply event sounds like fun contact Jack Brown 1446 Red Jacket Rd Grand Island NY 14072 information Personally can see catching like gang busters Consider enlarging classic Stahl Struhl Comet Megow etc designs around 300 sq wing area adding twochannel micro-sized radio system seeing thing thermal like Texaco turns about San Diego Aeroneersand especially Bob Munnhave also developing Scale Dura tion eventbut limited Space doesnt permit comprehensive review rules However interested should contact Jim Alaback 16634 Diaz Drive San Diego CA 92128 Finally I recently opportunity tour new Boeing Museum Seattle Anyone interest aviation history would enjoy dis plays much did particularly im pressed use largish models complement displays much better little plastic models often seen have no idea might have built work manship coloration impressive have opportunity tour recon structed San Diego Museum understand features display models well large display modeling memorabilia much orga nized SAM Chapter 41 its members Additionally have informed Kal amazoo Michigan Aviation Historical Museum has recently added reproduction Good brothers Guff RC model its display orig inal Guff resides Smithsonian Walter Pompey built replica Good twins residents Kalamazoo time originals construction flights Obviously model also adds considerably museum RC Scale/Parsons Contued page 49 First its own experience abort ing takeoff pulling throttle back things go awry learned reflex some rea son once theyve advanced throttle full power modelers inclined leave through thick thin airplane veers Out control its almost pilot has frozen cant respond urge pilots think problem through teach themselves properly abort takeoff Since always judgment call isnt al ways easy know takes prac tice important pilot should think about before takeoff prepared immediately pull back throttle case trou ble Having flown tail-dragger twins years Ive lots aborting practice fact De Havilland Hornet aborts takeoffs first 50 60 flights Smooth flying other factor fosters illusion full-scale performance trainers sport planes appear au thentic arcing smoothly through air Simulating full-scale flight means maintaining such steady control movements smooth no jerkiness jumping around whether flying straight level doing maneu vers entering exiting turns maneuvers smooth accurate proportional con trol provided todays marvelous radios recently soloed RCer can fly smoothly windy gusty weather excepted takes con stantly think smooth communicate through fingers transmitter make easier hold sticks fingers Ive used neck strap support trans mitter ever since getting first proportional ra dio 1964 saxophone strap available music stores works great Because its quick easy adjust tach transmitter saxophone strap much better strap furnished ra dio sets Its well worth four five dollars youll pay quest smoothest flying possible Sport Aerobatic 55 span 51 length 4 channel 141/20 swept wing Symetrical Airfoil Engine 45 602 cv Kit includes rolled plans cut sanded pans formed landing gear wheel asels steerable tail wheel bracket push rod set other basic hardware Kleen Sweep 87995 $500 P8 HI Check MO 60 804cyVisa MC Write far free cat Other Kits Avail 317 525-9074 CrenshawAeroRR 1 Box 121 ManIlla IN 46150 TKebuIll R/C Idle-Bar Glow Plugs Long Short Also.Only $189 Traditional line non-idle bar Glow Plugs Six Types 3 Heat Ranges High Performance Glow Element Blow Proof Seal Only $149 Swanson Associates PO Box 151 S,s r948 Wayne NJ 07470 154 Model Aviation AIR WOLF EPOXY FIBERGLASS FUSELAGES TAKES MOST 50-60 MECHANICS OTHER MODELS AVAILABLE LARRY JOLLY MODEL PRODUCTS $21000 5501 WCOMO SANTA ANA CALIFORNIA 92703 714 826-6861 some fliers go beyond neck strap use tray support transmitter also pro vides guiding support hands have opportunity see outstanding Scale builder pilot Dennis Crooks flying stable ducted fans note uses transmit ter tray course Hanno Prettner has us ing tray years Enough said RC Electrics/Kopski Continued page 51 Futaba speed control high-rate device dont know plan find out tell next month must say theres high level reader interest high-rate/frame-rate mat ter reaction personal preferences men tioned October column See below So good things Futaba Electric receiver seems have going concerns Yes First question raised reader Harding Orren Rancho Mi rage CA would apply BEC installa tion question concerns fusing power sys tem near batterybefore BEC circuit Yup sure sounds like trouble should fuse blow some reason youre flight did RC would suddenly become Free Flight Frankly despite fact obvious question personally never considered case always fuse right battery its also case dont have BEC de vices use As understand Futaba re ceiver has protection circuitry shut motor down case fault condition occurring However would protect battery RC DESIGNS WEASEL Engine size 40-502 cycle Hardware included Foam Balsa 84 R C DESIGNS 75 Price Dr Wilmington OH 45177 513-382-2158 Hrs 4-8 pm accept 12-8 pm Mon-Fri MasterCard & Visa Saturdays associated wiring ahead receiver should short occur Its something think about now personal preference prefer de termine shut down motor prefer have determined monitor BEC circuit developed preference hard way time someone elses plane out far low BEC circuit did its thing wary folks Keep watch read stopwatch plane good ideaBEC cause youll soon learn its time hang close field Anyway BEC bittersweet very idea having receiver battery weight very appealing independence given simply having supplementary battery pack also very appealing Decisions decisions now heres closing offering Fu taba product As mentioned above designed shut down should overload occur Apparently sensed parameter heat MOS FETS metal-oxide-semiconductor field-effect transistorsEd used speed control circui try get too hot shuts down modeler know running cobalt 05 fairly hard receiver speed control working quite hard motor routinely shut down prematurely corrected situation installing small air scoop near receiver MOSFETS adding corresponding nearby air exit Presto heat consequently shutdown went away speed-control rate matter mentioned October column has brought quite bit reader interestand advance De cember column wont streets about month time January column being written can hardly wait see reader reaction December column Continued January 1990 155 AELECTRIC SEMI-SCALE Radio Control Sport/Trainer Wing span 67 3/4 Length 37 l/2 PAUL K GUILLOW INC WAKEFIELD MA 01880
Edition: Model Aviation - 1990/01
Page Numbers: 48, 49, 154, 155
SCRATCH DESIGNING Like ardent Scale fliers have scratch designed planes number years practice offers real ad vantages can build fly Scale model favorite plane thats never kitted no plans plans have drawn can make exactly way think should best youll have im mense satisfaction having created own jewel Scale fliers would like scratch design build own ships reluctant try what can fascinating satisfying part modeling Ive heard modelers say think takes special skills experience lack answer always same youve built Scale models kits plans several years youll have few problems designing building own Simply draw outline size want proceed basic con struction techniques perhaps adding some embel lishments own work yes really no difficult So no holding backgo Airfoils Ill short sweet complex difficult subject scratch designing own Scale model use same airfoil full-scale plane information available usually some digging Though sounds perfectly logical Scale designers dont some excep tions good reasons duplicating airfoil used full-scale airplane First heightens scale effect Second since designer full-scale plane good reasons using airfoil take advantage work Third change Wing incidence Ill say same thing said airfoils cases adopt wing cidence used full-scale plane Ive always done its always worked fine Some Scale designers go zero degrees wing incidence models apparently reasoning its good Pattern plane its good Scale planes course using 00 inci dence wont foul up flying characteristics Scale airplanes probable excep tions B-47 B-52 will change attitude fuselage straight level flight instance WW II fighters used several degrees positive incidence wing Bearcat exception re move incidence model will likely assume slightly nose-high attitude during fly bys rather sliehtlv nose-low attitude seen full-size warbirds does nose-low position look much better use fidelity scale whenever possible Scale retracts Scale models airoperated retractable landing gears its real problem slow down operation accu rate scale rate Unfortunately attempting ter air using in-line restrictor doesnt work well pinching air line equally effective time youve slowed things down enough gear usually comes up jerksif comes up 48 Model Aviation Radio Conoi Scale Dan Parsons 11909 Fumier Dr Albuquerque NM 87111 Gene Bartons 100-in P-38 taking off gear almost retracted Dan writes about Scale retracts Left Merlyn Graves big F-15 climbing out after takeoff Note main gear already hidden wells nose gear coming up Center Roy Vaillancourts 92-in Jug quickly cleaned up after lift-off Right Bob Freys P-51 just after takeoff wheels coming up As result air-operated gear retracts practically snap up raises havoc realism destroys prettiest sights Scale RCing So what Easy stall air-hydraulic cylinder air line lead ing gear-raising side air cylinder feeds hydraulic oil automatic transmission oil works fine retract gear cylinder oil can easily metered pinching oil line clamp give completely smooth realistically timed gear retraction Since oil must forced back through restricted line during gear extension youll have same smooth realistically timed action bit messier set up straight air sys tem what difference realism real problem obtaining air-hydraulic cyl inder made own theyve worked flaw lessly MB-5 De Havilland Hornet fighters through hundreds flights over period years Lee Robinson Robinaire Florida working design development airhydraulic cylinders use youre inter ested give him call 1-305/439-6965 Flight controls check models have met demise taking off ai lerons reversed Often rather new planes maiden flights victims veteran planes just back repairs servo replace ment pilot probably checked aile rons worked didnt realize controls reversed prevent such catastrophe go step beyond checklist includes making sure control surfaces move correct direction before flight Though may sound like overkill end justifies means Eventually preflight check routine should become grained much like automatic reflex action Ill never have worry about taking off flight control surfaces reversed simple step may someday save favor ite planeand save kicking tail being careless Aborting takeoff Weve seen models sud denly turn fly through pilots line during takeoff run careen through pits scattering people directions wondering pilot didnt throttle back abort takeoff right beginning Despite obvious dangers such out-ofcontrol missile poses little ever said written done about problem Ive seen model ers laugh joke about over PA system have some suggestions pilots greatly reduce serious threat people other models offending model itself Continued page 154 LET WATER FEVER TAKE YOU OVERE LANIER RCs SEA BIRD CAT NO 87206 EXPLORE THE ADVANTAGES OF WATER FLYING WITH THIS SUPER INTERMEDIATE TRAINER Fuselage Length 45 Rec Engine Size 40-60 60-80 4 Stroke Flying Weight 5-6 lbs Wing Span 60 Area 630 sq Radio Channels 4 WRITE TODAY FOR YOUR FREE COLOR CATALOG PC Box 458Oakwood GA 30566404-532-6401 MADE IN THE USA B9* SMITh ZIUDUDWRZRD 7550 Sen Gabeel 5050 cedeo CA 93422 460-1717 January 1990 49 Frank Noll flies authors Havilland Hor net allowing Dan get picture own plane Noll proceeded thoroughly wring out Hornet photos Parsons $975AVAILABLE AT AMERICAS$525 FINEST HOBBY SHOPS DISTRIBUTED BY 1943 vintage 2 Model shall capable ROG rise-off groundEd 3 Powered sailpianes acceptable 4 Although models will judged scale reasonable effort should made real istically simulate color markings 5 Minimum wing loadings 8 oz/sq ft monoplanes 6 oz/sq ft multiwings 6 Model shall powered Cox 049 reed-valve-type engines having maximum fuel tank capacity 8cc No throttles allowed No die sels allowed Maximum prop diameter allowed 8 Only commercially available glow fuel al lowed 7 Model balsa/plywood construc tion Foam can used details 8 No foam ARFs almost-ready-to-fly al lowed 9 Plan three-view needed confirmation 10 The bottom line model must re semble full-scale plane era 11 All flying scoring regulations pertain ing SAM hA Texaco will apply event sounds like fun contact Jack Brown 1446 Red Jacket Rd Grand Island NY 14072 information Personally can see catching like gang busters Consider enlarging classic Stahl Struhl Comet Megow etc designs around 300 sq wing area adding twochannel micro-sized radio system seeing thing thermal like Texaco turns about San Diego Aeroneersand especially Bob Munnhave also developing Scale Dura tion eventbut limited Space doesnt permit comprehensive review rules However interested should contact Jim Alaback 16634 Diaz Drive San Diego CA 92128 Finally I recently opportunity tour new Boeing Museum Seattle Anyone interest aviation history would enjoy dis plays much did particularly im pressed use largish models complement displays much better little plastic models often seen have no idea might have built work manship coloration impressive have opportunity tour recon structed San Diego Museum understand features display models well large display modeling memorabilia much orga nized SAM Chapter 41 its members Additionally have informed Kal amazoo Michigan Aviation Historical Museum has recently added reproduction Good brothers Guff RC model its display orig inal Guff resides Smithsonian Walter Pompey built replica Good twins residents Kalamazoo time originals construction flights Obviously model also adds considerably museum RC Scale/Parsons Contued page 49 First its own experience abort ing takeoff pulling throttle back things go awry learned reflex some rea son once theyve advanced throttle full power modelers inclined leave through thick thin airplane veers Out control its almost pilot has frozen cant respond urge pilots think problem through teach themselves properly abort takeoff Since always judgment call isnt al ways easy know takes prac tice important pilot should think about before takeoff prepared immediately pull back throttle case trou ble Having flown tail-dragger twins years Ive lots aborting practice fact De Havilland Hornet aborts takeoffs first 50 60 flights Smooth flying other factor fosters illusion full-scale performance trainers sport planes appear au thentic arcing smoothly through air Simulating full-scale flight means maintaining such steady control movements smooth no jerkiness jumping around whether flying straight level doing maneu vers entering exiting turns maneuvers smooth accurate proportional con trol provided todays marvelous radios recently soloed RCer can fly smoothly windy gusty weather excepted takes con stantly think smooth communicate through fingers transmitter make easier hold sticks fingers Ive used neck strap support trans mitter ever since getting first proportional ra dio 1964 saxophone strap available music stores works great Because its quick easy adjust tach transmitter saxophone strap much better strap furnished ra dio sets Its well worth four five dollars youll pay quest smoothest flying possible Sport Aerobatic 55 span 51 length 4 channel 141/20 swept wing Symetrical Airfoil Engine 45 602 cv Kit includes rolled plans cut sanded pans formed landing gear wheel asels steerable tail wheel bracket push rod set other basic hardware Kleen Sweep 87995 $500 P8 HI Check MO 60 804cyVisa MC Write far free cat Other Kits Avail 317 525-9074 CrenshawAeroRR 1 Box 121 ManIlla IN 46150 TKebuIll R/C Idle-Bar Glow Plugs Long Short Also.Only $189 Traditional line non-idle bar Glow Plugs Six Types 3 Heat Ranges High Performance Glow Element Blow Proof Seal Only $149 Swanson Associates PO Box 151 S,s r948 Wayne NJ 07470 154 Model Aviation AIR WOLF EPOXY FIBERGLASS FUSELAGES TAKES MOST 50-60 MECHANICS OTHER MODELS AVAILABLE LARRY JOLLY MODEL PRODUCTS $21000 5501 WCOMO SANTA ANA CALIFORNIA 92703 714 826-6861 some fliers go beyond neck strap use tray support transmitter also pro vides guiding support hands have opportunity see outstanding Scale builder pilot Dennis Crooks flying stable ducted fans note uses transmit ter tray course Hanno Prettner has us ing tray years Enough said RC Electrics/Kopski Continued page 51 Futaba speed control high-rate device dont know plan find out tell next month must say theres high level reader interest high-rate/frame-rate mat ter reaction personal preferences men tioned October column See below So good things Futaba Electric receiver seems have going concerns Yes First question raised reader Harding Orren Rancho Mi rage CA would apply BEC installa tion question concerns fusing power sys tem near batterybefore BEC circuit Yup sure sounds like trouble should fuse blow some reason youre flight did RC would suddenly become Free Flight Frankly despite fact obvious question personally never considered case always fuse right battery its also case dont have BEC de vices use As understand Futaba re ceiver has protection circuitry shut motor down case fault condition occurring However would protect battery RC DESIGNS WEASEL Engine size 40-502 cycle Hardware included Foam Balsa 84 R C DESIGNS 75 Price Dr Wilmington OH 45177 513-382-2158 Hrs 4-8 pm accept 12-8 pm Mon-Fri MasterCard & Visa Saturdays associated wiring ahead receiver should short occur Its something think about now personal preference prefer de termine shut down motor prefer have determined monitor BEC circuit developed preference hard way time someone elses plane out far low BEC circuit did its thing wary folks Keep watch read stopwatch plane good ideaBEC cause youll soon learn its time hang close field Anyway BEC bittersweet very idea having receiver battery weight very appealing independence given simply having supplementary battery pack also very appealing Decisions decisions now heres closing offering Fu taba product As mentioned above designed shut down should overload occur Apparently sensed parameter heat MOS FETS metal-oxide-semiconductor field-effect transistorsEd used speed control circui try get too hot shuts down modeler know running cobalt 05 fairly hard receiver speed control working quite hard motor routinely shut down prematurely corrected situation installing small air scoop near receiver MOSFETS adding corresponding nearby air exit Presto heat consequently shutdown went away speed-control rate matter mentioned October column has brought quite bit reader interestand advance De cember column wont streets about month time January column being written can hardly wait see reader reaction December column Continued January 1990 155 AELECTRIC SEMI-SCALE Radio Control Sport/Trainer Wing span 67 3/4 Length 37 l/2 PAUL K GUILLOW INC WAKEFIELD MA 01880
Edition: Model Aviation - 1990/01
Page Numbers: 48, 49, 154, 155
SCRATCH DESIGNING Like ardent Scale fliers have scratch designed planes number years practice offers real ad vantages can build fly Scale model favorite plane thats never kitted no plans plans have drawn can make exactly way think should best youll have im mense satisfaction having created own jewel Scale fliers would like scratch design build own ships reluctant try what can fascinating satisfying part modeling Ive heard modelers say think takes special skills experience lack answer always same youve built Scale models kits plans several years youll have few problems designing building own Simply draw outline size want proceed basic con struction techniques perhaps adding some embel lishments own work yes really no difficult So no holding backgo Airfoils Ill short sweet complex difficult subject scratch designing own Scale model use same airfoil full-scale plane information available usually some digging Though sounds perfectly logical Scale designers dont some excep tions good reasons duplicating airfoil used full-scale airplane First heightens scale effect Second since designer full-scale plane good reasons using airfoil take advantage work Third change Wing incidence Ill say same thing said airfoils cases adopt wing cidence used full-scale plane Ive always done its always worked fine Some Scale designers go zero degrees wing incidence models apparently reasoning its good Pattern plane its good Scale planes course using 00 inci dence wont foul up flying characteristics Scale airplanes probable excep tions B-47 B-52 will change attitude fuselage straight level flight instance WW II fighters used several degrees positive incidence wing Bearcat exception re move incidence model will likely assume slightly nose-high attitude during fly bys rather sliehtlv nose-low attitude seen full-size warbirds does nose-low position look much better use fidelity scale whenever possible Scale retracts Scale models airoperated retractable landing gears its real problem slow down operation accu rate scale rate Unfortunately attempting ter air using in-line restrictor doesnt work well pinching air line equally effective time youve slowed things down enough gear usually comes up jerksif comes up 48 Model Aviation Radio Conoi Scale Dan Parsons 11909 Fumier Dr Albuquerque NM 87111 Gene Bartons 100-in P-38 taking off gear almost retracted Dan writes about Scale retracts Left Merlyn Graves big F-15 climbing out after takeoff Note main gear already hidden wells nose gear coming up Center Roy Vaillancourts 92-in Jug quickly cleaned up after lift-off Right Bob Freys P-51 just after takeoff wheels coming up As result air-operated gear retracts practically snap up raises havoc realism destroys prettiest sights Scale RCing So what Easy stall air-hydraulic cylinder air line lead ing gear-raising side air cylinder feeds hydraulic oil automatic transmission oil works fine retract gear cylinder oil can easily metered pinching oil line clamp give completely smooth realistically timed gear retraction Since oil must forced back through restricted line during gear extension youll have same smooth realistically timed action bit messier set up straight air sys tem what difference realism real problem obtaining air-hydraulic cyl inder made own theyve worked flaw lessly MB-5 De Havilland Hornet fighters through hundreds flights over period years Lee Robinson Robinaire Florida working design development airhydraulic cylinders use youre inter ested give him call 1-305/439-6965 Flight controls check models have met demise taking off ai lerons reversed Often rather new planes maiden flights victims veteran planes just back repairs servo replace ment pilot probably checked aile rons worked didnt realize controls reversed prevent such catastrophe go step beyond checklist includes making sure control surfaces move correct direction before flight Though may sound like overkill end justifies means Eventually preflight check routine should become grained much like automatic reflex action Ill never have worry about taking off flight control surfaces reversed simple step may someday save favor ite planeand save kicking tail being careless Aborting takeoff Weve seen models sud denly turn fly through pilots line during takeoff run careen through pits scattering people directions wondering pilot didnt throttle back abort takeoff right beginning Despite obvious dangers such out-ofcontrol missile poses little ever said written done about problem Ive seen model ers laugh joke about over PA system have some suggestions pilots greatly reduce serious threat people other models offending model itself Continued page 154 LET WATER FEVER TAKE YOU OVERE LANIER RCs SEA BIRD CAT NO 87206 EXPLORE THE ADVANTAGES OF WATER FLYING WITH THIS SUPER INTERMEDIATE TRAINER Fuselage Length 45 Rec Engine Size 40-60 60-80 4 Stroke Flying Weight 5-6 lbs Wing Span 60 Area 630 sq Radio Channels 4 WRITE TODAY FOR YOUR FREE COLOR CATALOG PC Box 458Oakwood GA 30566404-532-6401 MADE IN THE USA B9* SMITh ZIUDUDWRZRD 7550 Sen Gabeel 5050 cedeo CA 93422 460-1717 January 1990 49 Frank Noll flies authors Havilland Hor net allowing Dan get picture own plane Noll proceeded thoroughly wring out Hornet photos Parsons $975AVAILABLE AT AMERICAS$525 FINEST HOBBY SHOPS DISTRIBUTED BY 1943 vintage 2 Model shall capable ROG rise-off groundEd 3 Powered sailpianes acceptable 4 Although models will judged scale reasonable effort should made real istically simulate color markings 5 Minimum wing loadings 8 oz/sq ft monoplanes 6 oz/sq ft multiwings 6 Model shall powered Cox 049 reed-valve-type engines having maximum fuel tank capacity 8cc No throttles allowed No die sels allowed Maximum prop diameter allowed 8 Only commercially available glow fuel al lowed 7 Model balsa/plywood construc tion Foam can used details 8 No foam ARFs almost-ready-to-fly al lowed 9 Plan three-view needed confirmation 10 The bottom line model must re semble full-scale plane era 11 All flying scoring regulations pertain ing SAM hA Texaco will apply event sounds like fun contact Jack Brown 1446 Red Jacket Rd Grand Island NY 14072 information Personally can see catching like gang busters Consider enlarging classic Stahl Struhl Comet Megow etc designs around 300 sq wing area adding twochannel micro-sized radio system seeing thing thermal like Texaco turns about San Diego Aeroneersand especially Bob Munnhave also developing Scale Dura tion eventbut limited Space doesnt permit comprehensive review rules However interested should contact Jim Alaback 16634 Diaz Drive San Diego CA 92128 Finally I recently opportunity tour new Boeing Museum Seattle Anyone interest aviation history would enjoy dis plays much did particularly im pressed use largish models complement displays much better little plastic models often seen have no idea might have built work manship coloration impressive have opportunity tour recon structed San Diego Museum understand features display models well large display modeling memorabilia much orga nized SAM Chapter 41 its members Additionally have informed Kal amazoo Michigan Aviation Historical Museum has recently added reproduction Good brothers Guff RC model its display orig inal Guff resides Smithsonian Walter Pompey built replica Good twins residents Kalamazoo time originals construction flights Obviously model also adds considerably museum RC Scale/Parsons Contued page 49 First its own experience abort ing takeoff pulling throttle back things go awry learned reflex some rea son once theyve advanced throttle full power modelers inclined leave through thick thin airplane veers Out control its almost pilot has frozen cant respond urge pilots think problem through teach themselves properly abort takeoff Since always judgment call isnt al ways easy know takes prac tice important pilot should think about before takeoff prepared immediately pull back throttle case trou ble Having flown tail-dragger twins years Ive lots aborting practice fact De Havilland Hornet aborts takeoffs first 50 60 flights Smooth flying other factor fosters illusion full-scale performance trainers sport planes appear au thentic arcing smoothly through air Simulating full-scale flight means maintaining such steady control movements smooth no jerkiness jumping around whether flying straight level doing maneu vers entering exiting turns maneuvers smooth accurate proportional con trol provided todays marvelous radios recently soloed RCer can fly smoothly windy gusty weather excepted takes con stantly think smooth communicate through fingers transmitter make easier hold sticks fingers Ive used neck strap support trans mitter ever since getting first proportional ra dio 1964 saxophone strap available music stores works great Because its quick easy adjust tach transmitter saxophone strap much better strap furnished ra dio sets Its well worth four five dollars youll pay quest smoothest flying possible Sport Aerobatic 55 span 51 length 4 channel 141/20 swept wing Symetrical Airfoil Engine 45 602 cv Kit includes rolled plans cut sanded pans formed landing gear wheel asels steerable tail wheel bracket push rod set other basic hardware Kleen Sweep 87995 $500 P8 HI Check MO 60 804cyVisa MC Write far free cat Other Kits Avail 317 525-9074 CrenshawAeroRR 1 Box 121 ManIlla IN 46150 TKebuIll R/C Idle-Bar Glow Plugs Long Short Also.Only $189 Traditional line non-idle bar Glow Plugs Six Types 3 Heat Ranges High Performance Glow Element Blow Proof Seal Only $149 Swanson Associates PO Box 151 S,s r948 Wayne NJ 07470 154 Model Aviation AIR WOLF EPOXY FIBERGLASS FUSELAGES TAKES MOST 50-60 MECHANICS OTHER MODELS AVAILABLE LARRY JOLLY MODEL PRODUCTS $21000 5501 WCOMO SANTA ANA CALIFORNIA 92703 714 826-6861 some fliers go beyond neck strap use tray support transmitter also pro vides guiding support hands have opportunity see outstanding Scale builder pilot Dennis Crooks flying stable ducted fans note uses transmit ter tray course Hanno Prettner has us ing tray years Enough said RC Electrics/Kopski Continued page 51 Futaba speed control high-rate device dont know plan find out tell next month must say theres high level reader interest high-rate/frame-rate mat ter reaction personal preferences men tioned October column See below So good things Futaba Electric receiver seems have going concerns Yes First question raised reader Harding Orren Rancho Mi rage CA would apply BEC installa tion question concerns fusing power sys tem near batterybefore BEC circuit Yup sure sounds like trouble should fuse blow some reason youre flight did RC would suddenly become Free Flight Frankly despite fact obvious question personally never considered case always fuse right battery its also case dont have BEC de vices use As understand Futaba re ceiver has protection circuitry shut motor down case fault condition occurring However would protect battery RC DESIGNS WEASEL Engine size 40-502 cycle Hardware included Foam Balsa 84 R C DESIGNS 75 Price Dr Wilmington OH 45177 513-382-2158 Hrs 4-8 pm accept 12-8 pm Mon-Fri MasterCard & Visa Saturdays associated wiring ahead receiver should short occur Its something think about now personal preference prefer de termine shut down motor prefer have determined monitor BEC circuit developed preference hard way time someone elses plane out far low BEC circuit did its thing wary folks Keep watch read stopwatch plane good ideaBEC cause youll soon learn its time hang close field Anyway BEC bittersweet very idea having receiver battery weight very appealing independence given simply having supplementary battery pack also very appealing Decisions decisions now heres closing offering Fu taba product As mentioned above designed shut down should overload occur Apparently sensed parameter heat MOS FETS metal-oxide-semiconductor field-effect transistorsEd used speed control circui try get too hot shuts down modeler know running cobalt 05 fairly hard receiver speed control working quite hard motor routinely shut down prematurely corrected situation installing small air scoop near receiver MOSFETS adding corresponding nearby air exit Presto heat consequently shutdown went away speed-control rate matter mentioned October column has brought quite bit reader interestand advance De cember column wont streets about month time January column being written can hardly wait see reader reaction December column Continued January 1990 155 AELECTRIC SEMI-SCALE Radio Control Sport/Trainer Wing span 67 3/4 Length 37 l/2 PAUL K GUILLOW INC WAKEFIELD MA 01880