Radio Control Helicopters Larry Jolly OLD BUSINESS Last month left hang ing primed Scale fuselage woodwork windows mechanics installed month going detail model have included several photographs use examples have studied Scale documentation have noticed full-size machines clean myriad protuberances breeze Most Scale model Helicopters simply too sanitary what makes look like models So put stuff model way would tackle plenty prior planning Study documentation note exterior details Does full-size machine use rivets round-head flush Note antennas lights Now form outline list details added what order instance Ted Schoonards BK-i 17 prototype has corrugated stiffeners tail boom used Nyrod simulate corrugations building model would add stiffeners just before final spray primer assume Ted did way Since primer fills surface its sprayed want add lot primer after have started detail work else soon fills up disappears So outline good building ald help stay track first Scale project would recommend look through back issues ModelAviation check outthe Scale columns written Bob Dolly Wischer Bill Boss predecessors Dick Byron Mike Gretz contaln wealth information have helped numerous occasions Now have outline have studied up fine arts rivet doorhandle making must decide much final detail will add before paint fuselage Same detail will strong enough withstand rigors masking handling occur painting However small items like door handles antennas will soon become victims masking tape must finished separately attached after painting completed particular machine features flush-head rivets best applied after painting complete gently pressing flame-heated metal tube against fuselage surface As far paint goes pick preference Last month stated use K&B Superpoxy primer what Joigot state use because usually use epoxy palnt finish other paints particularly acrylic lac quer have added advantage quick drying easy repair available virtually color go way recom mend spray final coat clear polyure thane fuel-proof model Ive spent time planned hope has useful someone out Good luck keep Scale Helicopters coming multi-bladed main rotor heads Scale fuselages available Scale should have super future New business Recently Ive calls modelers wanting know such-and-such machine better another should buy Helicopter autorotation clutch often-asked question am learning fly RC Helicopters Should have autoro tation unit machine answer YES before get let describe just what autorotation means Helicopters able land safely unpower ed gliding state because rotor blades tend remain rotation because reverse flow air passing through disc unpowered Helicopter descends say Tends keep rotating means will happen blade pitch reduced its best gliding angle drag rotor-drive-system mechanics doesnt stop rotor turning before autorotation can commence full-size machines spinning rotor sys tem has incredible amount inertia rotor can easily overcome drag trans Continued page 147 See what difference scale details make Both Hind 0 chopperewere made same fuselagebut realism clearlyfavors Mike RobinsToiedo-wlnnerL itsdetaiis Include panel ilnesanda 3-bladedtaii rotor italso placed third atthe85 Nats DontaneeratTom Yantis model R though because made fulfill different purpose works RPV Ford Aerospace must have onlytwo qualities must have accurate outline must fly Thats no scale detail 54 Model Aviation Well full-scale machine model Tea cnoonaras UI-1 1715 everything Scale Helicopter should photos fabulous model June 1986 issue n iurwouTInuI iuni LarryaI riugn leys Wolf made DC Labs Bell 222 fuselage uses Kavan mechanics As Hughs models doorsopento reveal full Interior RC Electrics/Kopski Continued page 138 recommended system trainer machine Wasp configured aero batics ailerons elevator uses NACA 2410 semi-symmetrical airfoil section have prior flight experience want some maneuverability plane Wasp really comes alive cobalt 05 thats out line intent column can upgrade cobalt laterand blow holes skywhen discover nice Electric flying really Leisure Playboy Astro Viking OldTimers very docile easy-to-fly models designed gear-drive systems will also work direct-drive systems suggested above have flown 41-ounce Playboy Astro 2102 direct drive 8 x 4 prop six cells just what Im pro moting its pussycat flyjust cruises gradually along upwardexactly what beginning Electric pilots need given reasonable ground condi tions will easily ROG rise-off-ground total package general whatever model choose please strive keep finished model weight low smaller models should able stay below 36 ounces Larger gliders Old-Timers will finish up 42 oz little less large wings keep wing loading lowa big help higher weights Yes somewhat heavier will fly sorta dont write youre disap pointed results Remember Im pass ing along what has extensively used locally has proven very satisfactory fellow modelers help most-important weight issue consider following Rules Thumb Reference 4 has power system normally comprises about half weight typical Electric An accompa nying photo shows weight rec ommended power system about 19 oz typical model system should weigh about 38 oz Also its virtually impossi ble come out lower 32-33 oz suggested items Ive given Heavier too easy achieve almost seems happen itself must reasonably careful during building task overdo Attention paid always gets rewarded betterflying Electric recommended economy power system capable making up excess weight youre starting model design intended Electric youre off easier start youre starting typical glider kit originated Electric may want substitute lighter stuff some kit materials structure Cost As generalization Electric no less costly comparably-sized Gas machines radio model costs essen tially same Electric power system fact may cost similar gas engine fuel essentially free As thing else degrees cost involved thrust article lower end regard Electric model equipment life can significantly longer Gas case because motors batteries can last hun dreds flights no natural death model oil-soaking Also radio generally lives easier lifeminimal vibration Electric darn good 'deal' THE END References 1 Model Aviation February November 1984 2 Model Aviation November 1984 3 RCM February 1986 Kit Electric Model Designs Suite 108 39 West Alexis Road Toledo OH 43612 4 Model Aviation April 1984 Please forward comment questions SASE please Bob Kopski 25 West End Dr Lansdale PA 19446 Please take particular care get finger spinning Electric proparmature inertia can impart far bite same prop suitable Gas engine RC Helicopters/Jolly Continued page 54 mission safely autorotate Miniature Heli copters other hand have much less inertia stored spinning discs have make concessions enhance chances making safe autorotation method concession used model Helicopters addition Torrington bearing supporting main rotor shaft attachment main drive gear Torrington looks somewhat like needle bearing spring-loaded ramps center ramps make unit act act drive rotated directioin freewheeling unit rotated opposite direction unit mounted main reduction gear aliows rotor freewheel engine stops tail-rotor drive siezes Continued page 148 THE LEADER IN COMPETITION NEW 4 CYCLE SERIES 100 THP DESIGN PRICE 299 DIA 379 479 15 6a9 16 gag NEW PRO SERIES 3 p N NEW HIGH TECH AIRFOIL SECTION 10 TO 200/o INCREASE IN THRUST MFG OF SELECT HARD MAPLE WOOD WILL NOT FATIGUE LIKE SYNTHETICS FUEL PROOF HIGH LUSTER FINISH DIAPITCHPRICE 534149 634149 72633/456179 a334s6ai69 645667199 9456677199 1045667209 106W6W209 106EW219 11467777I6229 ii5W229 116EW239 1167239 124W279 125W279 1256279 1356349 1456459 1556659 164/N969 16676969 RC PYLON RACING SERIES 500 DIA PITCHPRICE 7SN 5N279 8l 677a299 SERIES 400C 66V,6777269 97269 August 1986 147 PROPELLERS TAILORED HELICAL PITCH DEVELOPEDTO GIVE MAXIMUM THRUST AT 4 CYCLE ENGINE RPM ALL THE LATEST TECHNIQUES USED ON OUR PRO SERIES 3 SEE BELOW PITCH THP 66/i 77 6 677 6 677 67a GONTIOLINI TINKI PROFILE0COMBArRAT WIDE & NARROW WEDGE UNIFLOW& Custom Dimni Fuels Ingredients Fo detailed bochure50C stamps/check oni CAROLINATAFFINDER 8345 Delhi Road Charleston Hgts SC 29418 803-563-7169 201 SE 12th Street Pompano Beach 1 33080 305-7857978 ENGINEERING THE LANDING GEAR PEOPLE Tired 1 kil filing gsars 1131 dent Ill yoer biggie properly o & 0 Eogioeuring cac solve problems * Culls built coeds & specs geuranleed Ill * Stiseg & durable wilbiloed lIe looghoel loading * 0 & 0 Engineeriog gear sill work & keep biggie Ilgiog * I stock replocOmeol gear hr coil popular models Byroo PIlls Clnslee Eagle CAP 2I Balsa USA J-3 CUB Air Tech Pawoeg aod Eagle Nose Big Slick Champ Cilelno H & N models Soapper Slioger end Soapper Toe W WIDE BLADE EW EXTRA WIDE N 0 0 0 0 C 0 0 0 0 C C 0 0 COMMANOO FOR h/ TEXACO B-70 FREEFLIGHT TAUBE 1/2A RC POTENT 30 lightweight Past Duilding P-SO Pro-Rolled Motor Tube Tisaus Prop Machine Cut Ribs Rubber included Only $1295 0 0 0 0 0 0 0 S 0 0 0 0 $2595 0 1795 2250 0 0 0 S 0 0 0 0 Sitd SASE Par Urochure Add $300 Sllppdng Hafldtlng COD Add $200 Caild Am Add 6% Tax Meeter Card & Visa 116 065-3669 Sat & Sun Phauts Models PO Sax 604 Poleomn CA 96630 0 oeooooOOOeeooe..o Now know take great skill autorotate machine prescribed pad altitude motor out experience has also shown experience engine failure hover drag tail rotor grass damage machine always less freewheel device fitted reason believe mandatory model Helicopter fitted autorotation regardless fliers skill level common crashes beginner occurs has started hovering model turns its nose towards him slightly flier becomes confused former fixed-wing pilot invariably gives Up elevator panic Helicopter promptly backs up drags its tail rotor ground model has autorotation main rotor simply runs away problem usually doesnt stress tall rotor gear box tear teeth out main reduction gear thinking purchasing model Helicopter can afford extra cost autorotation means get think will save time money long run BCNU Larry Jolly 5501 W Coma Santa Ana CA 92703 RC Pylon Racing/Hager Continued page 55 ie separate channel motor cutoff RACE PROCEDURES/SCORING As speci fied current rules Formula except course length shall follow QM Short Course layout 1705 miles 10 laps race shall started simultaneous hand-launch NOTE six-cell 72 V motor battery size selected permit fast charging 12 V source However goal standardize seven cells 84 V similar events flown other regions country six-cell battery tends equalize performance differences tween various motors also RECOMMENDED EQUIPMENT Aircraft kits Barbarian Hummingbird JM Glascraft Lightning Electric Motor Design Fast Eddy Hobby Horn Wasp Leisure Elec tronics Ohm-My-Gosh Model Builder p1 ans Motors Challenger 05 Super Ferrite 05 Astro Flight LT5O Competition Wind Lei sure Electronics Batteries Sanyo SR rules specifically drafted permit wide variety motors aircraft types flown resultant response event entries will determine final version Kindly take few minutes read over rules submit comments Remember first cut subject change depending comments Dont forget years Nats Lake Charles LA past has perfect site Next month Ill have some helpful tips improve flying See Bill Hager 706 Glen Haven Dr Conroe TX 77385 SARPI/Powel Continued page 57 earphone method can also serve quick reference check system operation after hard-landing incident crash does check servos themselves quickly tested normal stickwaggling inspection sharing flying site other fliers using adjacent RC channels helpful have non-destructive means checking systems sensitivity inter ference Using servos output indi cator can exciting interference pulses received since spurious commands can spin servos wrap pushrods linkages spaghetti safer technique disconnect servos use SARPI instead can experiment freely listening different distances other fliersand transmitter off antenna down up etc no damage can occur equip ment Interference will change steady buzz syncopated beat some static noise may heard Construction circuit requires minimum components can found Radio Shack stores except servo lead must obtained RC dealer Since us equipped make PC boards have shown circuit wired small IC matrix board ease assembly links possible made bare solid wire Note wires must positioned shown pictorial avoid shorts obtained small-gauge bare wire stripping some heavy stranded hookup wire using individual strands Layout criticalexcept avoiding shorts solder bridges components mounted silkscreened face board copper use IC socket observe polarity 10 mfd capacitor IC must inserted its socket correct orientation wiring socket put dab paint marker adjacent Pin 1 both sides board later reference Care must taken establish identity servo leads receiver Although probably worst will hap pen reversed connector wiring loss 4049 4050 IC circuit certainly wont work either sets servo leads color-coded red V black V some other color signal lead battery connector lead similar servo leads try checking battery wiring voltmeter find pin nection World Engines Airtronics leads shown Fig 2 FIG 2 Sq No d Eng ne Sq Aon TYPICAL SERVO PLUG LEADS construction sequence 1 Epoxy -in earphone socket top surface 148 Model Aviation MASTER AIRSCREW ~RAIRSC REW 12x8 Folder1195 15x12 Folder..1295 05 Direct Drive Prop Adapter395 Available thru Dealer WINDSOR PROPELLER CO 384 Tesconi Ct Santa Rosa CA 95401 0 0 0 0 0 0 0 0 0 0 ZO NA SAWS famous line hobby aews Razor #200 Universal #500 P0 Box 3967 Torrance CA 90610 Replacement Blades available dealer FAIModei Supply U GRAPHICS STRIPING TAPE 60 feet3 sizes thein price ofpackage 36 -4---- /16 OETE 420 BbyIon Road Hoshzn, PA
Edition: Model Aviation - 1986/08
Page Numbers: 54, 147, 148
Radio Control Helicopters Larry Jolly OLD BUSINESS Last month left hang ing primed Scale fuselage woodwork windows mechanics installed month going detail model have included several photographs use examples have studied Scale documentation have noticed full-size machines clean myriad protuberances breeze Most Scale model Helicopters simply too sanitary what makes look like models So put stuff model way would tackle plenty prior planning Study documentation note exterior details Does full-size machine use rivets round-head flush Note antennas lights Now form outline list details added what order instance Ted Schoonards BK-i 17 prototype has corrugated stiffeners tail boom used Nyrod simulate corrugations building model would add stiffeners just before final spray primer assume Ted did way Since primer fills surface its sprayed want add lot primer after have started detail work else soon fills up disappears So outline good building ald help stay track first Scale project would recommend look through back issues ModelAviation check outthe Scale columns written Bob Dolly Wischer Bill Boss predecessors Dick Byron Mike Gretz contaln wealth information have helped numerous occasions Now have outline have studied up fine arts rivet doorhandle making must decide much final detail will add before paint fuselage Same detail will strong enough withstand rigors masking handling occur painting However small items like door handles antennas will soon become victims masking tape must finished separately attached after painting completed particular machine features flush-head rivets best applied after painting complete gently pressing flame-heated metal tube against fuselage surface As far paint goes pick preference Last month stated use K&B Superpoxy primer what Joigot state use because usually use epoxy palnt finish other paints particularly acrylic lac quer have added advantage quick drying easy repair available virtually color go way recom mend spray final coat clear polyure thane fuel-proof model Ive spent time planned hope has useful someone out Good luck keep Scale Helicopters coming multi-bladed main rotor heads Scale fuselages available Scale should have super future New business Recently Ive calls modelers wanting know such-and-such machine better another should buy Helicopter autorotation clutch often-asked question am learning fly RC Helicopters Should have autoro tation unit machine answer YES before get let describe just what autorotation means Helicopters able land safely unpower ed gliding state because rotor blades tend remain rotation because reverse flow air passing through disc unpowered Helicopter descends say Tends keep rotating means will happen blade pitch reduced its best gliding angle drag rotor-drive-system mechanics doesnt stop rotor turning before autorotation can commence full-size machines spinning rotor sys tem has incredible amount inertia rotor can easily overcome drag trans Continued page 147 See what difference scale details make Both Hind 0 chopperewere made same fuselagebut realism clearlyfavors Mike RobinsToiedo-wlnnerL itsdetaiis Include panel ilnesanda 3-bladedtaii rotor italso placed third atthe85 Nats DontaneeratTom Yantis model R though because made fulfill different purpose works RPV Ford Aerospace must have onlytwo qualities must have accurate outline must fly Thats no scale detail 54 Model Aviation Well full-scale machine model Tea cnoonaras UI-1 1715 everything Scale Helicopter should photos fabulous model June 1986 issue n iurwouTInuI iuni LarryaI riugn leys Wolf made DC Labs Bell 222 fuselage uses Kavan mechanics As Hughs models doorsopento reveal full Interior RC Electrics/Kopski Continued page 138 recommended system trainer machine Wasp configured aero batics ailerons elevator uses NACA 2410 semi-symmetrical airfoil section have prior flight experience want some maneuverability plane Wasp really comes alive cobalt 05 thats out line intent column can upgrade cobalt laterand blow holes skywhen discover nice Electric flying really Leisure Playboy Astro Viking OldTimers very docile easy-to-fly models designed gear-drive systems will also work direct-drive systems suggested above have flown 41-ounce Playboy Astro 2102 direct drive 8 x 4 prop six cells just what Im pro moting its pussycat flyjust cruises gradually along upwardexactly what beginning Electric pilots need given reasonable ground condi tions will easily ROG rise-off-ground total package general whatever model choose please strive keep finished model weight low smaller models should able stay below 36 ounces Larger gliders Old-Timers will finish up 42 oz little less large wings keep wing loading lowa big help higher weights Yes somewhat heavier will fly sorta dont write youre disap pointed results Remember Im pass ing along what has extensively used locally has proven very satisfactory fellow modelers help most-important weight issue consider following Rules Thumb Reference 4 has power system normally comprises about half weight typical Electric An accompa nying photo shows weight rec ommended power system about 19 oz typical model system should weigh about 38 oz Also its virtually impossi ble come out lower 32-33 oz suggested items Ive given Heavier too easy achieve almost seems happen itself must reasonably careful during building task overdo Attention paid always gets rewarded betterflying Electric recommended economy power system capable making up excess weight youre starting model design intended Electric youre off easier start youre starting typical glider kit originated Electric may want substitute lighter stuff some kit materials structure Cost As generalization Electric no less costly comparably-sized Gas machines radio model costs essen tially same Electric power system fact may cost similar gas engine fuel essentially free As thing else degrees cost involved thrust article lower end regard Electric model equipment life can significantly longer Gas case because motors batteries can last hun dreds flights no natural death model oil-soaking Also radio generally lives easier lifeminimal vibration Electric darn good 'deal' THE END References 1 Model Aviation February November 1984 2 Model Aviation November 1984 3 RCM February 1986 Kit Electric Model Designs Suite 108 39 West Alexis Road Toledo OH 43612 4 Model Aviation April 1984 Please forward comment questions SASE please Bob Kopski 25 West End Dr Lansdale PA 19446 Please take particular care get finger spinning Electric proparmature inertia can impart far bite same prop suitable Gas engine RC Helicopters/Jolly Continued page 54 mission safely autorotate Miniature Heli copters other hand have much less inertia stored spinning discs have make concessions enhance chances making safe autorotation method concession used model Helicopters addition Torrington bearing supporting main rotor shaft attachment main drive gear Torrington looks somewhat like needle bearing spring-loaded ramps center ramps make unit act act drive rotated directioin freewheeling unit rotated opposite direction unit mounted main reduction gear aliows rotor freewheel engine stops tail-rotor drive siezes Continued page 148 THE LEADER IN COMPETITION NEW 4 CYCLE SERIES 100 THP DESIGN PRICE 299 DIA 379 479 15 6a9 16 gag NEW PRO SERIES 3 p N NEW HIGH TECH AIRFOIL SECTION 10 TO 200/o INCREASE IN THRUST MFG OF SELECT HARD MAPLE WOOD WILL NOT FATIGUE LIKE SYNTHETICS FUEL PROOF HIGH LUSTER FINISH DIAPITCHPRICE 534149 634149 72633/456179 a334s6ai69 645667199 9456677199 1045667209 106W6W209 106EW219 11467777I6229 ii5W229 116EW239 1167239 124W279 125W279 1256279 1356349 1456459 1556659 164/N969 16676969 RC PYLON RACING SERIES 500 DIA PITCHPRICE 7SN 5N279 8l 677a299 SERIES 400C 66V,6777269 97269 August 1986 147 PROPELLERS TAILORED HELICAL PITCH DEVELOPEDTO GIVE MAXIMUM THRUST AT 4 CYCLE ENGINE RPM ALL THE LATEST TECHNIQUES USED ON OUR PRO SERIES 3 SEE BELOW PITCH THP 66/i 77 6 677 6 677 67a GONTIOLINI TINKI PROFILE0COMBArRAT WIDE & NARROW WEDGE UNIFLOW& Custom Dimni Fuels Ingredients Fo detailed bochure50C stamps/check oni CAROLINATAFFINDER 8345 Delhi Road Charleston Hgts SC 29418 803-563-7169 201 SE 12th Street Pompano Beach 1 33080 305-7857978 ENGINEERING THE LANDING GEAR PEOPLE Tired 1 kil filing gsars 1131 dent Ill yoer biggie properly o & 0 Eogioeuring cac solve problems * Culls built coeds & specs geuranleed Ill * Stiseg & durable wilbiloed lIe looghoel loading * 0 & 0 Engineeriog gear sill work & keep biggie Ilgiog * I stock replocOmeol gear hr coil popular models Byroo PIlls Clnslee Eagle CAP 2I Balsa USA J-3 CUB Air Tech Pawoeg aod Eagle Nose Big Slick Champ Cilelno H & N models Soapper Slioger end Soapper Toe W WIDE BLADE EW EXTRA WIDE N 0 0 0 0 C 0 0 0 0 C C 0 0 COMMANOO FOR h/ TEXACO B-70 FREEFLIGHT TAUBE 1/2A RC POTENT 30 lightweight Past Duilding P-SO Pro-Rolled Motor Tube Tisaus Prop Machine Cut Ribs Rubber included Only $1295 0 0 0 0 0 0 0 S 0 0 0 0 $2595 0 1795 2250 0 0 0 S 0 0 0 0 Sitd SASE Par Urochure Add $300 Sllppdng Hafldtlng COD Add $200 Caild Am Add 6% Tax Meeter Card & Visa 116 065-3669 Sat & Sun Phauts Models PO Sax 604 Poleomn CA 96630 0 oeooooOOOeeooe..o Now know take great skill autorotate machine prescribed pad altitude motor out experience has also shown experience engine failure hover drag tail rotor grass damage machine always less freewheel device fitted reason believe mandatory model Helicopter fitted autorotation regardless fliers skill level common crashes beginner occurs has started hovering model turns its nose towards him slightly flier becomes confused former fixed-wing pilot invariably gives Up elevator panic Helicopter promptly backs up drags its tail rotor ground model has autorotation main rotor simply runs away problem usually doesnt stress tall rotor gear box tear teeth out main reduction gear thinking purchasing model Helicopter can afford extra cost autorotation means get think will save time money long run BCNU Larry Jolly 5501 W Coma Santa Ana CA 92703 RC Pylon Racing/Hager Continued page 55 ie separate channel motor cutoff RACE PROCEDURES/SCORING As speci fied current rules Formula except course length shall follow QM Short Course layout 1705 miles 10 laps race shall started simultaneous hand-launch NOTE six-cell 72 V motor battery size selected permit fast charging 12 V source However goal standardize seven cells 84 V similar events flown other regions country six-cell battery tends equalize performance differences tween various motors also RECOMMENDED EQUIPMENT Aircraft kits Barbarian Hummingbird JM Glascraft Lightning Electric Motor Design Fast Eddy Hobby Horn Wasp Leisure Elec tronics Ohm-My-Gosh Model Builder p1 ans Motors Challenger 05 Super Ferrite 05 Astro Flight LT5O Competition Wind Lei sure Electronics Batteries Sanyo SR rules specifically drafted permit wide variety motors aircraft types flown resultant response event entries will determine final version Kindly take few minutes read over rules submit comments Remember first cut subject change depending comments Dont forget years Nats Lake Charles LA past has perfect site Next month Ill have some helpful tips improve flying See Bill Hager 706 Glen Haven Dr Conroe TX 77385 SARPI/Powel Continued page 57 earphone method can also serve quick reference check system operation after hard-landing incident crash does check servos themselves quickly tested normal stickwaggling inspection sharing flying site other fliers using adjacent RC channels helpful have non-destructive means checking systems sensitivity inter ference Using servos output indi cator can exciting interference pulses received since spurious commands can spin servos wrap pushrods linkages spaghetti safer technique disconnect servos use SARPI instead can experiment freely listening different distances other fliersand transmitter off antenna down up etc no damage can occur equip ment Interference will change steady buzz syncopated beat some static noise may heard Construction circuit requires minimum components can found Radio Shack stores except servo lead must obtained RC dealer Since us equipped make PC boards have shown circuit wired small IC matrix board ease assembly links possible made bare solid wire Note wires must positioned shown pictorial avoid shorts obtained small-gauge bare wire stripping some heavy stranded hookup wire using individual strands Layout criticalexcept avoiding shorts solder bridges components mounted silkscreened face board copper use IC socket observe polarity 10 mfd capacitor IC must inserted its socket correct orientation wiring socket put dab paint marker adjacent Pin 1 both sides board later reference Care must taken establish identity servo leads receiver Although probably worst will hap pen reversed connector wiring loss 4049 4050 IC circuit certainly wont work either sets servo leads color-coded red V black V some other color signal lead battery connector lead similar servo leads try checking battery wiring voltmeter find pin nection World Engines Airtronics leads shown Fig 2 FIG 2 Sq No d Eng ne Sq Aon TYPICAL SERVO PLUG LEADS construction sequence 1 Epoxy -in earphone socket top surface 148 Model Aviation MASTER AIRSCREW ~RAIRSC REW 12x8 Folder1195 15x12 Folder..1295 05 Direct Drive Prop Adapter395 Available thru Dealer WINDSOR PROPELLER CO 384 Tesconi Ct Santa Rosa CA 95401 0 0 0 0 0 0 0 0 0 0 ZO NA SAWS famous line hobby aews Razor #200 Universal #500 P0 Box 3967 Torrance CA 90610 Replacement Blades available dealer FAIModei Supply U GRAPHICS STRIPING TAPE 60 feet3 sizes thein price ofpackage 36 -4---- /16 OETE 420 BbyIon Road Hoshzn, PA
Edition: Model Aviation - 1986/08
Page Numbers: 54, 147, 148
Radio Control Helicopters Larry Jolly OLD BUSINESS Last month left hang ing primed Scale fuselage woodwork windows mechanics installed month going detail model have included several photographs use examples have studied Scale documentation have noticed full-size machines clean myriad protuberances breeze Most Scale model Helicopters simply too sanitary what makes look like models So put stuff model way would tackle plenty prior planning Study documentation note exterior details Does full-size machine use rivets round-head flush Note antennas lights Now form outline list details added what order instance Ted Schoonards BK-i 17 prototype has corrugated stiffeners tail boom used Nyrod simulate corrugations building model would add stiffeners just before final spray primer assume Ted did way Since primer fills surface its sprayed want add lot primer after have started detail work else soon fills up disappears So outline good building ald help stay track first Scale project would recommend look through back issues ModelAviation check outthe Scale columns written Bob Dolly Wischer Bill Boss predecessors Dick Byron Mike Gretz contaln wealth information have helped numerous occasions Now have outline have studied up fine arts rivet doorhandle making must decide much final detail will add before paint fuselage Same detail will strong enough withstand rigors masking handling occur painting However small items like door handles antennas will soon become victims masking tape must finished separately attached after painting completed particular machine features flush-head rivets best applied after painting complete gently pressing flame-heated metal tube against fuselage surface As far paint goes pick preference Last month stated use K&B Superpoxy primer what Joigot state use because usually use epoxy palnt finish other paints particularly acrylic lac quer have added advantage quick drying easy repair available virtually color go way recom mend spray final coat clear polyure thane fuel-proof model Ive spent time planned hope has useful someone out Good luck keep Scale Helicopters coming multi-bladed main rotor heads Scale fuselages available Scale should have super future New business Recently Ive calls modelers wanting know such-and-such machine better another should buy Helicopter autorotation clutch often-asked question am learning fly RC Helicopters Should have autoro tation unit machine answer YES before get let describe just what autorotation means Helicopters able land safely unpower ed gliding state because rotor blades tend remain rotation because reverse flow air passing through disc unpowered Helicopter descends say Tends keep rotating means will happen blade pitch reduced its best gliding angle drag rotor-drive-system mechanics doesnt stop rotor turning before autorotation can commence full-size machines spinning rotor sys tem has incredible amount inertia rotor can easily overcome drag trans Continued page 147 See what difference scale details make Both Hind 0 chopperewere made same fuselagebut realism clearlyfavors Mike RobinsToiedo-wlnnerL itsdetaiis Include panel ilnesanda 3-bladedtaii rotor italso placed third atthe85 Nats DontaneeratTom Yantis model R though because made fulfill different purpose works RPV Ford Aerospace must have onlytwo qualities must have accurate outline must fly Thats no scale detail 54 Model Aviation Well full-scale machine model Tea cnoonaras UI-1 1715 everything Scale Helicopter should photos fabulous model June 1986 issue n iurwouTInuI iuni LarryaI riugn leys Wolf made DC Labs Bell 222 fuselage uses Kavan mechanics As Hughs models doorsopento reveal full Interior RC Electrics/Kopski Continued page 138 recommended system trainer machine Wasp configured aero batics ailerons elevator uses NACA 2410 semi-symmetrical airfoil section have prior flight experience want some maneuverability plane Wasp really comes alive cobalt 05 thats out line intent column can upgrade cobalt laterand blow holes skywhen discover nice Electric flying really Leisure Playboy Astro Viking OldTimers very docile easy-to-fly models designed gear-drive systems will also work direct-drive systems suggested above have flown 41-ounce Playboy Astro 2102 direct drive 8 x 4 prop six cells just what Im pro moting its pussycat flyjust cruises gradually along upwardexactly what beginning Electric pilots need given reasonable ground condi tions will easily ROG rise-off-ground total package general whatever model choose please strive keep finished model weight low smaller models should able stay below 36 ounces Larger gliders Old-Timers will finish up 42 oz little less large wings keep wing loading lowa big help higher weights Yes somewhat heavier will fly sorta dont write youre disap pointed results Remember Im pass ing along what has extensively used locally has proven very satisfactory fellow modelers help most-important weight issue consider following Rules Thumb Reference 4 has power system normally comprises about half weight typical Electric An accompa nying photo shows weight rec ommended power system about 19 oz typical model system should weigh about 38 oz Also its virtually impossi ble come out lower 32-33 oz suggested items Ive given Heavier too easy achieve almost seems happen itself must reasonably careful during building task overdo Attention paid always gets rewarded betterflying Electric recommended economy power system capable making up excess weight youre starting model design intended Electric youre off easier start youre starting typical glider kit originated Electric may want substitute lighter stuff some kit materials structure Cost As generalization Electric no less costly comparably-sized Gas machines radio model costs essen tially same Electric power system fact may cost similar gas engine fuel essentially free As thing else degrees cost involved thrust article lower end regard Electric model equipment life can significantly longer Gas case because motors batteries can last hun dreds flights no natural death model oil-soaking Also radio generally lives easier lifeminimal vibration Electric darn good 'deal' THE END References 1 Model Aviation February November 1984 2 Model Aviation November 1984 3 RCM February 1986 Kit Electric Model Designs Suite 108 39 West Alexis Road Toledo OH 43612 4 Model Aviation April 1984 Please forward comment questions SASE please Bob Kopski 25 West End Dr Lansdale PA 19446 Please take particular care get finger spinning Electric proparmature inertia can impart far bite same prop suitable Gas engine RC Helicopters/Jolly Continued page 54 mission safely autorotate Miniature Heli copters other hand have much less inertia stored spinning discs have make concessions enhance chances making safe autorotation method concession used model Helicopters addition Torrington bearing supporting main rotor shaft attachment main drive gear Torrington looks somewhat like needle bearing spring-loaded ramps center ramps make unit act act drive rotated directioin freewheeling unit rotated opposite direction unit mounted main reduction gear aliows rotor freewheel engine stops tail-rotor drive siezes Continued page 148 THE LEADER IN COMPETITION NEW 4 CYCLE SERIES 100 THP DESIGN PRICE 299 DIA 379 479 15 6a9 16 gag NEW PRO SERIES 3 p N NEW HIGH TECH AIRFOIL SECTION 10 TO 200/o INCREASE IN THRUST MFG OF SELECT HARD MAPLE WOOD WILL NOT FATIGUE LIKE SYNTHETICS FUEL PROOF HIGH LUSTER FINISH DIAPITCHPRICE 534149 634149 72633/456179 a334s6ai69 645667199 9456677199 1045667209 106W6W209 106EW219 11467777I6229 ii5W229 116EW239 1167239 124W279 125W279 1256279 1356349 1456459 1556659 164/N969 16676969 RC PYLON RACING SERIES 500 DIA PITCHPRICE 7SN 5N279 8l 677a299 SERIES 400C 66V,6777269 97269 August 1986 147 PROPELLERS TAILORED HELICAL PITCH DEVELOPEDTO GIVE MAXIMUM THRUST AT 4 CYCLE ENGINE RPM ALL THE LATEST TECHNIQUES USED ON OUR PRO SERIES 3 SEE BELOW PITCH THP 66/i 77 6 677 6 677 67a GONTIOLINI TINKI PROFILE0COMBArRAT WIDE & NARROW WEDGE UNIFLOW& Custom Dimni Fuels Ingredients Fo detailed bochure50C stamps/check oni CAROLINATAFFINDER 8345 Delhi Road Charleston Hgts SC 29418 803-563-7169 201 SE 12th Street Pompano Beach 1 33080 305-7857978 ENGINEERING THE LANDING GEAR PEOPLE Tired 1 kil filing gsars 1131 dent Ill yoer biggie properly o & 0 Eogioeuring cac solve problems * Culls built coeds & specs geuranleed Ill * Stiseg & durable wilbiloed lIe looghoel loading * 0 & 0 Engineeriog gear sill work & keep biggie Ilgiog * I stock replocOmeol gear hr coil popular models Byroo PIlls Clnslee Eagle CAP 2I Balsa USA J-3 CUB Air Tech Pawoeg aod Eagle Nose Big Slick Champ Cilelno H & N models Soapper Slioger end Soapper Toe W WIDE BLADE EW EXTRA WIDE N 0 0 0 0 C 0 0 0 0 C C 0 0 COMMANOO FOR h/ TEXACO B-70 FREEFLIGHT TAUBE 1/2A RC POTENT 30 lightweight Past Duilding P-SO Pro-Rolled Motor Tube Tisaus Prop Machine Cut Ribs Rubber included Only $1295 0 0 0 0 0 0 0 S 0 0 0 0 $2595 0 1795 2250 0 0 0 S 0 0 0 0 Sitd SASE Par Urochure Add $300 Sllppdng Hafldtlng COD Add $200 Caild Am Add 6% Tax Meeter Card & Visa 116 065-3669 Sat & Sun Phauts Models PO Sax 604 Poleomn CA 96630 0 oeooooOOOeeooe..o Now know take great skill autorotate machine prescribed pad altitude motor out experience has also shown experience engine failure hover drag tail rotor grass damage machine always less freewheel device fitted reason believe mandatory model Helicopter fitted autorotation regardless fliers skill level common crashes beginner occurs has started hovering model turns its nose towards him slightly flier becomes confused former fixed-wing pilot invariably gives Up elevator panic Helicopter promptly backs up drags its tail rotor ground model has autorotation main rotor simply runs away problem usually doesnt stress tall rotor gear box tear teeth out main reduction gear thinking purchasing model Helicopter can afford extra cost autorotation means get think will save time money long run BCNU Larry Jolly 5501 W Coma Santa Ana CA 92703 RC Pylon Racing/Hager Continued page 55 ie separate channel motor cutoff RACE PROCEDURES/SCORING As speci fied current rules Formula except course length shall follow QM Short Course layout 1705 miles 10 laps race shall started simultaneous hand-launch NOTE six-cell 72 V motor battery size selected permit fast charging 12 V source However goal standardize seven cells 84 V similar events flown other regions country six-cell battery tends equalize performance differences tween various motors also RECOMMENDED EQUIPMENT Aircraft kits Barbarian Hummingbird JM Glascraft Lightning Electric Motor Design Fast Eddy Hobby Horn Wasp Leisure Elec tronics Ohm-My-Gosh Model Builder p1 ans Motors Challenger 05 Super Ferrite 05 Astro Flight LT5O Competition Wind Lei sure Electronics Batteries Sanyo SR rules specifically drafted permit wide variety motors aircraft types flown resultant response event entries will determine final version Kindly take few minutes read over rules submit comments Remember first cut subject change depending comments Dont forget years Nats Lake Charles LA past has perfect site Next month Ill have some helpful tips improve flying See Bill Hager 706 Glen Haven Dr Conroe TX 77385 SARPI/Powel Continued page 57 earphone method can also serve quick reference check system operation after hard-landing incident crash does check servos themselves quickly tested normal stickwaggling inspection sharing flying site other fliers using adjacent RC channels helpful have non-destructive means checking systems sensitivity inter ference Using servos output indi cator can exciting interference pulses received since spurious commands can spin servos wrap pushrods linkages spaghetti safer technique disconnect servos use SARPI instead can experiment freely listening different distances other fliersand transmitter off antenna down up etc no damage can occur equip ment Interference will change steady buzz syncopated beat some static noise may heard Construction circuit requires minimum components can found Radio Shack stores except servo lead must obtained RC dealer Since us equipped make PC boards have shown circuit wired small IC matrix board ease assembly links possible made bare solid wire Note wires must positioned shown pictorial avoid shorts obtained small-gauge bare wire stripping some heavy stranded hookup wire using individual strands Layout criticalexcept avoiding shorts solder bridges components mounted silkscreened face board copper use IC socket observe polarity 10 mfd capacitor IC must inserted its socket correct orientation wiring socket put dab paint marker adjacent Pin 1 both sides board later reference Care must taken establish identity servo leads receiver Although probably worst will hap pen reversed connector wiring loss 4049 4050 IC circuit certainly wont work either sets servo leads color-coded red V black V some other color signal lead battery connector lead similar servo leads try checking battery wiring voltmeter find pin nection World Engines Airtronics leads shown Fig 2 FIG 2 Sq No d Eng ne Sq Aon TYPICAL SERVO PLUG LEADS construction sequence 1 Epoxy -in earphone socket top surface 148 Model Aviation MASTER AIRSCREW ~RAIRSC REW 12x8 Folder1195 15x12 Folder..1295 05 Direct Drive Prop Adapter395 Available thru Dealer WINDSOR PROPELLER CO 384 Tesconi Ct Santa Rosa CA 95401 0 0 0 0 0 0 0 0 0 0 ZO NA SAWS famous line hobby aews Razor #200 Universal #500 P0 Box 3967 Torrance CA 90610 Replacement Blades available dealer FAIModei Supply U GRAPHICS STRIPING TAPE 60 feet3 sizes thein price ofpackage 36 -4---- /16 OETE 420 BbyIon Road Hoshzn, PA