Radio Control E lectrics Bob Kopski MY INCOMING LElTERS often responses recent column writer usually has some questions Sometimes letter will just friendly conversational offering Whatever case appreciate knowing column being read try promptly responsive individual requests help RC Electrics itself often reaction coming mail recent example April column devoted making highcurrent shuntbecause several readers asked measure large motor currents months column another example readers have requested information about get Electric low cost persons have varied reasons asking Some simply cant spend much thats perfectly OK Some can dont want make big investment initially just case theres related requests sim ple docile plane/system recommendation can fly schoolyard down street Finally requests have never flown RC have no equipment faced buying virtually thing once attracted idea Electrics need entry-level economi cal trainerand everything go cluding radio month well take closer look needs Easy economIcal entry-level ElectrIc recommendations follow have timetested local fliers have followed suggestions have no hesitation sharing very same offerings Some modelers have prior RC Gas experience just wanted Electric try Quite few have never built model have learned build fly RC way Vir tually have continued second third Electrics What follows does break traditional preference avoiding specific product recommendations no other way approach matter So interests sound like aboveread motor motor heartily recom mend Astro plain-bearing ferrite 05/075 Its Astro part no 2102 lists $1595 September 85 price list economical motor will blow hole sky sure has brought Electric Elation first-time continuing Electric success fellow modelers recommend motor over others purposes described above cause readily available time-proven economical large enough fly reas onably-sized plane radio combination Yes know 02s 035s cheaper theres much better selection model de signs suited larger motor consider best choice columns purpose Period note clarification due No doubt some readers wondering Whats 05/075 Fair question used both 05 075 products Nowadays same motor does both jobs means battery prop variation No matterjust read As another side point since ask recommend use car motors try Electric flight car motors Ive seen wound such favor high rpm num ber reasons suitable direct-drive props such motors relatively small fast-turning Such motor/prop combination best suited relatively-fast-moving models mostly Out line intent par ticular column As turns out motors can nicely gear belt speed-reducers too apart intent since speed-reducers add cost battery battery recommend six cells Yes know some people use seven recommend six have choice sever al cell sizes cell capacities milliampere hours nearly always recommend 1200 milliampere-hour 12 ampere-hour size Six 50 Model Aviation whole works simple RC car battery charger designed six-cell 12 Ah 1200 mAh battery packs will Charge times must reduced smali-capacity batteries Another option use costly adjustable-current charger want some tips mount motor see recommendations July 1984 Issue ModelAviation components recommended pow er system weigh about 19 oz approxi mately 1/2 weight appropriate model Gas may ilghter Electric fits needs interestsand its quiet Three possible six-ceil configurations Top Simple On/Oft servo-driven motor switch Left 950 mAh ceiis 8 oz Hoileys Smail holes switch lever allow passage Silent Flight Top Right 1200 mAh cells pushrod servo Wheel collar Issetto hit 11 oz Bottom 800 mAh group 7 oz switch near end throwlike Latter two packs Astro Flight throttle trim Switch Astro Flight six Six cells very easy charge well time after time cost less seven harder charge welldespite what may have read job 12 Ah Because largest longest-fly ing cells commonly used weigh lower-capacity examples shown get flight time purposes column flight time im portant flight performance character istics associated little less weight prop prop recommend either 7 x 6 8 x 4 nylon recommend mer sport designs latter glider designs should try both nylon Because recommended motor has relatively thin easily-bent shaft nylon props forgiving circum stance hit something wood next choice recommend avoid possible Glass/fiber-filled props definite no choice chosen model Sailplane design otherwise does have landing gear recommend make prop-stop part installation Reference 1 little extra effort its motor-shaft-saver supreme charger charger have split recommendation cost extreme im portance always recommend Astro 4005D particular charger offers distinct ad vantage having adjustable current some other features making good invest ment likely continue Electric nearly everybody tries adjustment feature used different cell capacities other hand less-costly charger designed six 12 Ah cellsand has 15-minute time switch current meteris quite satisfactory kind charger popular RC car guys normally use such battery Leisure model pictured similar Astro 4005C what need Yes can charging job cheaper such timed metered charger risk battery great opinion worth Furthermore Im gonna tell ya anyway radio suitable radio always recommend using standard digital RC system four channel transmitter least three servos starters sure get smallest servos 250 mAh flight pack Yes can get cheaper two- three-channel systemsand really cheap pulse systems consider such best move smallest servos 250 mAh pack V2ntinapd nn nnu 11* TIGER TAIL 45 DRUIX ALL ALSA KIT An new Tiger Tail 120 four strokes Designed especially F3A Turn sti-ound competition balsa kit machined wood parts Hardware package includes plug-in adjustable stab pets new wing mounts Wing Span 72 inLength 60 Wing Area 860 sq inWeight 8 lb Complete Delux Kit$15995 COMBO DEAL-Tiger Tail 4S Enyal2OR-$3950O PIUS4N ADIUtAULE PAD U NEWi last can optmste stab ncdence fce best fhght chmaCtstlstcs pair glass filled nfon adjusters e ncluded proude ha mcro screuc adiustrnent smater frost tube Mast tube s alamesum ssith matching phenohc socust 695 GP NEWt VANS MOUUINU lET wing mounting system demloped tth Ron chidgey fast neat accurate stays tight Three nylon bracksts screws machined wing blodst e included- $595 See Your Dealer Order Direct Include $1 50 Per Item UPS GATOR R/C PRODUCTS 3713 Pompano DrMe 0 Pensacola FL 325140 Phone 904 476-8639 August 1986 51 New GATOR Typical switch wiring harnesses piusa variety chargeconnectors can servo drive toggie switch too epoxying extension made fiattened siumi num tubing driiilng hoie forthe servo pushrod White Molex connectors wiring harnesses interface motor battery excitement model can brought back safe landing However opposite holding Down elevator because insuffi cient down-trim available transmitter controls hazardous skilled pilot Scale modeler insists upon reproducing large angular difference model should move CG far forward first flights progressively move rearward later sug gested Mr Ruley case overall airplane weight will probably substantially increased because volume lead nose As Mr Ruley states angular difference doesnt affect longitudinal stability know anguished experience can lead disaster resulting initial instability Toledo agaIn new Toledo exhibition hall under construction Question Will completed time Toledo Expo 1987 visited site impressed its size located newly restored downtown area city Toledo can proud what has accomplished restore beauty area blight Meanwhile old Sports Arena Weak Signals Club thirty-second annual RC Expo attracted usual overwhelming crowds exhibits manufacturers distribu tors retailers course Scale modelers Models display ranged size small Saito 30-powered Dormoy Bath tub monster Douglas DC-3 pair Quadra engines Two winners Precision Scale class models seen previously First place Best Show-winner Dennis Crooks displayed Grumman Avenger has flown two Scale Masters meets model also placed first Chicago Expo second place Cliff Tacies Savoia-Matchetti Pipistrello bomber will flying World Championships Oslo Norway July Larry Gordons 1-scale Grumman F4F-3 Wildcat Quadra engine placed third Military Scale class winner William Carper Curtiss Hawk P-6E Royal kit second-place Focke Wuif FW 190-D9 Don Parks came Pica kit Its unusual finish technique clear MonoKote Chevron Perfect Paint third place Hal Parentis newest Savoia Marchetti SM-79 Italian bomber fourth series Hal First flights made RC World Florida during March Non-Military Scale surprising entry North American SNJ Mike Barbee model finished civil colors Sky Typers skywriting group Mike used Ziroli kit fiberglass fuselage scratch-built Lake Buccaneer LA4200 amphibian secondplace winner Alvin Osminski Third place awarded Joe Mientkiewicz scratch-built Waco Taperwing year ago Orest Drobey displayed Bellanca Air Cruiser Toledo featured polished aluminum metalwork received great attention Orest returned Toledo Westland Lysander again elegantly finished large areas polished aluminum auto body repairman has neces sary skills work metal compound curves Lysanders wheel coverings produced hammering cookie sheets polishing high gloss model received Directors Award As always Toledo generates episodes within main event Toledo Tabby resi dent official Sports Arena rodent-control cat obviously ready have kittens Tabby proceded have offspring Sig ex hibit Hazel Sig-Hesters lap Hazel made hasty arrangements provide nest card board box Tabby gave birth five scale-model kittens did Tabby know among thou sands Toledo visitors Friday morning Hazel person would help time need family moved days end maintenance quarters Tabby returned through largest crowds crossing wide Arena Saturday pay visit Hazel Anyone has visited Sig estab lishment Montezuma knows Hazels love animals Bob Dolly Wischer S-221 Lapham Peak Rd Delafield WI 53018 RC Electrics/Kopski Continued page 51 important because save important ounces completed model always recommend minimum three-channel installation rud der elevator simple servo-driven ON OFF motor power switch recom mend fewer channels radio installation will weigh approximately six seven ounces Later interest proficiency grow can use leftover fourth channel ailerons some aerobatic Electric model Heres come will want decide what preferences number model types choose among include gliders Old-Timers everything else also called sport sport-trainer Within given type also choices Remember what dis cussing entry-level economy Electric will fly schoolyard down street friendly non-hair-raising way have seen power system recommenda tions above work very well quite range models Im partial own Spectra design Reference 2 offers three wing options such kits Olympic II Drifter II Olympic 650 Gentle Lady similar 2-Meter Sailplanes successful converts Electric Several fellow club members have learned fly such models Jim Zarembskis Sky Knight Reference 3 very good sport-trainer model fellow club members learned fly recommended power system Another Jims designs Wasp Leisure kit will fly comfortably Continued page 147 ATTENTION ERS QUAY BARBER MODELS C14 SHOESTRING SEMI-KiT $11995 KITSi5495 Rivets SEMI-KIT $11995 KIT -$15495 EPOXY/GLASS /FOAM/BALS CONSTRUCTION WITh DRAWINGS AND DATA FOR FORMULA 120 PYLON SPORT OR STANDOFF SCALE FULL OR SEMIKITSCosmic 8 10 lbs wAightWind 790 sq wing area SE511K1T $10995 60 2 stroke 12 4 stroke KIT $14495 kit prices plus shipping credit cards welcome Ohio residents add bi 1216 7774172 27106 8utternut Ridge Nnrth Olmated 081044070 Matched Finish System BEST APPEARANCE K&B FIBERGLASS CLOTH K&B Micra-Balloons FILLER K&B SUPER POXY RESIN K&B SUPER PONY THINNER K&B SUPER POXY PRIMER K&B SUPER PONY PAINT KaB MIXING CUPS 138 Model Aviation 0 Wing Span 52 4 cycle annels Acrobatic docile 6 8 hr rapid-fire essembiy precision pro-cut bale- end plywood complete hardware package Included capable complete AMA pattern Dave Robelens Windbreaker Playmate Featured April 1896 Model Aviation 3 Channel portFun Fly 52-4 cycle Fast assembly hand cut kit $4996 Pronto 48 span 5 2 4 cycle annel hand cut kit Easily converted electric excenent nor aegmn nar can ba sat up challenge expert *3996 50span15-25 Super Pronto2-4 cycle 4 channel Same excellent qualities Pronto acrobatic ailerons$4895 AvaIlable dealer order direct Add $2 shipping additional $2 COD save COD send check money order residents add 4% sales tasI TIDEWATER HOBBY ENTERPRISES Route 1 Box 241 D Lanexa Virginia 23089 804-966-5092 EPOXY GLASS COWLS FOR NOSEN PICA 510 MORGAN BALSA USA PLAiT CONCEPT FLEET HOSTETLER RCM T-cRAFT SHEBER PIUS ScALE SUPER cue FOEKER 0-7 BOEINO P-i 2 P26 F4a2 F4R4 SPARROW HAWK GEE BEE MOO Y MACBRIENS TURBULENT CHRISTEN EAGLE BRISIGHELLAS STAROUSTER II V SCALE J3-BI BABY FLYBARY & OTHERS WHEEL PANTS FOR CITABRIA STARSUSTER II PITTS SKYBOLT LIBERTY SPORT CHRISTEN EAGLE PRE HAWK MULLIGAN & OTHERS LARGE SCALE PLANS AVAILABLE Please send $100 complete list supply Modelers fiberglass parts plans Write call us T & D FIBERGLASS SPECIALTIES 3BR25 eLOCK GARDEN CiTY MI 48135 PHONE 313 421-6358 BRAzED So HEAT-TREATED WIRE GEARS 9 CABANER PHONE 1313261-9064 niuriug rurlurmuluu oyrnurn TOP PERFORMANCE K&B ENGINES AirplaneMarine K&B FUELSK&B GLOW PLUGS 9 Blends4 Choices 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
Edition: Model Aviation - 1986/08
Page Numbers: 50, 51, 138, 147
Radio Control E lectrics Bob Kopski MY INCOMING LElTERS often responses recent column writer usually has some questions Sometimes letter will just friendly conversational offering Whatever case appreciate knowing column being read try promptly responsive individual requests help RC Electrics itself often reaction coming mail recent example April column devoted making highcurrent shuntbecause several readers asked measure large motor currents months column another example readers have requested information about get Electric low cost persons have varied reasons asking Some simply cant spend much thats perfectly OK Some can dont want make big investment initially just case theres related requests sim ple docile plane/system recommendation can fly schoolyard down street Finally requests have never flown RC have no equipment faced buying virtually thing once attracted idea Electrics need entry-level economi cal trainerand everything go cluding radio month well take closer look needs Easy economIcal entry-level ElectrIc recommendations follow have timetested local fliers have followed suggestions have no hesitation sharing very same offerings Some modelers have prior RC Gas experience just wanted Electric try Quite few have never built model have learned build fly RC way Vir tually have continued second third Electrics What follows does break traditional preference avoiding specific product recommendations no other way approach matter So interests sound like aboveread motor motor heartily recom mend Astro plain-bearing ferrite 05/075 Its Astro part no 2102 lists $1595 September 85 price list economical motor will blow hole sky sure has brought Electric Elation first-time continuing Electric success fellow modelers recommend motor over others purposes described above cause readily available time-proven economical large enough fly reas onably-sized plane radio combination Yes know 02s 035s cheaper theres much better selection model de signs suited larger motor consider best choice columns purpose Period note clarification due No doubt some readers wondering Whats 05/075 Fair question used both 05 075 products Nowadays same motor does both jobs means battery prop variation No matterjust read As another side point since ask recommend use car motors try Electric flight car motors Ive seen wound such favor high rpm num ber reasons suitable direct-drive props such motors relatively small fast-turning Such motor/prop combination best suited relatively-fast-moving models mostly Out line intent par ticular column As turns out motors can nicely gear belt speed-reducers too apart intent since speed-reducers add cost battery battery recommend six cells Yes know some people use seven recommend six have choice sever al cell sizes cell capacities milliampere hours nearly always recommend 1200 milliampere-hour 12 ampere-hour size Six 50 Model Aviation whole works simple RC car battery charger designed six-cell 12 Ah 1200 mAh battery packs will Charge times must reduced smali-capacity batteries Another option use costly adjustable-current charger want some tips mount motor see recommendations July 1984 Issue ModelAviation components recommended pow er system weigh about 19 oz approxi mately 1/2 weight appropriate model Gas may ilghter Electric fits needs interestsand its quiet Three possible six-ceil configurations Top Simple On/Oft servo-driven motor switch Left 950 mAh ceiis 8 oz Hoileys Smail holes switch lever allow passage Silent Flight Top Right 1200 mAh cells pushrod servo Wheel collar Issetto hit 11 oz Bottom 800 mAh group 7 oz switch near end throwlike Latter two packs Astro Flight throttle trim Switch Astro Flight six Six cells very easy charge well time after time cost less seven harder charge welldespite what may have read job 12 Ah Because largest longest-fly ing cells commonly used weigh lower-capacity examples shown get flight time purposes column flight time im portant flight performance character istics associated little less weight prop prop recommend either 7 x 6 8 x 4 nylon recommend mer sport designs latter glider designs should try both nylon Because recommended motor has relatively thin easily-bent shaft nylon props forgiving circum stance hit something wood next choice recommend avoid possible Glass/fiber-filled props definite no choice chosen model Sailplane design otherwise does have landing gear recommend make prop-stop part installation Reference 1 little extra effort its motor-shaft-saver supreme charger charger have split recommendation cost extreme im portance always recommend Astro 4005D particular charger offers distinct ad vantage having adjustable current some other features making good invest ment likely continue Electric nearly everybody tries adjustment feature used different cell capacities other hand less-costly charger designed six 12 Ah cellsand has 15-minute time switch current meteris quite satisfactory kind charger popular RC car guys normally use such battery Leisure model pictured similar Astro 4005C what need Yes can charging job cheaper such timed metered charger risk battery great opinion worth Furthermore Im gonna tell ya anyway radio suitable radio always recommend using standard digital RC system four channel transmitter least three servos starters sure get smallest servos 250 mAh flight pack Yes can get cheaper two- three-channel systemsand really cheap pulse systems consider such best move smallest servos 250 mAh pack V2ntinapd nn nnu 11* TIGER TAIL 45 DRUIX ALL ALSA KIT An new Tiger Tail 120 four strokes Designed especially F3A Turn sti-ound competition balsa kit machined wood parts Hardware package includes plug-in adjustable stab pets new wing mounts Wing Span 72 inLength 60 Wing Area 860 sq inWeight 8 lb Complete Delux Kit$15995 COMBO DEAL-Tiger Tail 4S Enyal2OR-$3950O PIUS4N ADIUtAULE PAD U NEWi last can optmste stab ncdence fce best fhght chmaCtstlstcs pair glass filled nfon adjusters e ncluded proude ha mcro screuc adiustrnent smater frost tube Mast tube s alamesum ssith matching phenohc socust 695 GP NEWt VANS MOUUINU lET wing mounting system demloped tth Ron chidgey fast neat accurate stays tight Three nylon bracksts screws machined wing blodst e included- $595 See Your Dealer Order Direct Include $1 50 Per Item UPS GATOR R/C PRODUCTS 3713 Pompano DrMe 0 Pensacola FL 325140 Phone 904 476-8639 August 1986 51 New GATOR Typical switch wiring harnesses piusa variety chargeconnectors can servo drive toggie switch too epoxying extension made fiattened siumi num tubing driiilng hoie forthe servo pushrod White Molex connectors wiring harnesses interface motor battery excitement model can brought back safe landing However opposite holding Down elevator because insuffi cient down-trim available transmitter controls hazardous skilled pilot Scale modeler insists upon reproducing large angular difference model should move CG far forward first flights progressively move rearward later sug gested Mr Ruley case overall airplane weight will probably substantially increased because volume lead nose As Mr Ruley states angular difference doesnt affect longitudinal stability know anguished experience can lead disaster resulting initial instability Toledo agaIn new Toledo exhibition hall under construction Question Will completed time Toledo Expo 1987 visited site impressed its size located newly restored downtown area city Toledo can proud what has accomplished restore beauty area blight Meanwhile old Sports Arena Weak Signals Club thirty-second annual RC Expo attracted usual overwhelming crowds exhibits manufacturers distribu tors retailers course Scale modelers Models display ranged size small Saito 30-powered Dormoy Bath tub monster Douglas DC-3 pair Quadra engines Two winners Precision Scale class models seen previously First place Best Show-winner Dennis Crooks displayed Grumman Avenger has flown two Scale Masters meets model also placed first Chicago Expo second place Cliff Tacies Savoia-Matchetti Pipistrello bomber will flying World Championships Oslo Norway July Larry Gordons 1-scale Grumman F4F-3 Wildcat Quadra engine placed third Military Scale class winner William Carper Curtiss Hawk P-6E Royal kit second-place Focke Wuif FW 190-D9 Don Parks came Pica kit Its unusual finish technique clear MonoKote Chevron Perfect Paint third place Hal Parentis newest Savoia Marchetti SM-79 Italian bomber fourth series Hal First flights made RC World Florida during March Non-Military Scale surprising entry North American SNJ Mike Barbee model finished civil colors Sky Typers skywriting group Mike used Ziroli kit fiberglass fuselage scratch-built Lake Buccaneer LA4200 amphibian secondplace winner Alvin Osminski Third place awarded Joe Mientkiewicz scratch-built Waco Taperwing year ago Orest Drobey displayed Bellanca Air Cruiser Toledo featured polished aluminum metalwork received great attention Orest returned Toledo Westland Lysander again elegantly finished large areas polished aluminum auto body repairman has neces sary skills work metal compound curves Lysanders wheel coverings produced hammering cookie sheets polishing high gloss model received Directors Award As always Toledo generates episodes within main event Toledo Tabby resi dent official Sports Arena rodent-control cat obviously ready have kittens Tabby proceded have offspring Sig ex hibit Hazel Sig-Hesters lap Hazel made hasty arrangements provide nest card board box Tabby gave birth five scale-model kittens did Tabby know among thou sands Toledo visitors Friday morning Hazel person would help time need family moved days end maintenance quarters Tabby returned through largest crowds crossing wide Arena Saturday pay visit Hazel Anyone has visited Sig estab lishment Montezuma knows Hazels love animals Bob Dolly Wischer S-221 Lapham Peak Rd Delafield WI 53018 RC Electrics/Kopski Continued page 51 important because save important ounces completed model always recommend minimum three-channel installation rud der elevator simple servo-driven ON OFF motor power switch recom mend fewer channels radio installation will weigh approximately six seven ounces Later interest proficiency grow can use leftover fourth channel ailerons some aerobatic Electric model Heres come will want decide what preferences number model types choose among include gliders Old-Timers everything else also called sport sport-trainer Within given type also choices Remember what dis cussing entry-level economy Electric will fly schoolyard down street friendly non-hair-raising way have seen power system recommenda tions above work very well quite range models Im partial own Spectra design Reference 2 offers three wing options such kits Olympic II Drifter II Olympic 650 Gentle Lady similar 2-Meter Sailplanes successful converts Electric Several fellow club members have learned fly such models Jim Zarembskis Sky Knight Reference 3 very good sport-trainer model fellow club members learned fly recommended power system Another Jims designs Wasp Leisure kit will fly comfortably Continued page 147 ATTENTION ERS QUAY BARBER MODELS C14 SHOESTRING SEMI-KiT $11995 KITSi5495 Rivets SEMI-KIT $11995 KIT -$15495 EPOXY/GLASS /FOAM/BALS CONSTRUCTION WITh DRAWINGS AND DATA FOR FORMULA 120 PYLON SPORT OR STANDOFF SCALE FULL OR SEMIKITSCosmic 8 10 lbs wAightWind 790 sq wing area SE511K1T $10995 60 2 stroke 12 4 stroke KIT $14495 kit prices plus shipping credit cards welcome Ohio residents add bi 1216 7774172 27106 8utternut Ridge Nnrth Olmated 081044070 Matched Finish System BEST APPEARANCE K&B FIBERGLASS CLOTH K&B Micra-Balloons FILLER K&B SUPER POXY RESIN K&B SUPER PONY THINNER K&B SUPER POXY PRIMER K&B SUPER PONY PAINT KaB MIXING CUPS 138 Model Aviation 0 Wing Span 52 4 cycle annels Acrobatic docile 6 8 hr rapid-fire essembiy precision pro-cut bale- end plywood complete hardware package Included capable complete AMA pattern Dave Robelens Windbreaker Playmate Featured April 1896 Model Aviation 3 Channel portFun Fly 52-4 cycle Fast assembly hand cut kit $4996 Pronto 48 span 5 2 4 cycle annel hand cut kit Easily converted electric excenent nor aegmn nar can ba sat up challenge expert *3996 50span15-25 Super Pronto2-4 cycle 4 channel Same excellent qualities Pronto acrobatic ailerons$4895 AvaIlable dealer order direct Add $2 shipping additional $2 COD save COD send check money order residents add 4% sales tasI TIDEWATER HOBBY ENTERPRISES Route 1 Box 241 D Lanexa Virginia 23089 804-966-5092 EPOXY GLASS COWLS FOR NOSEN PICA 510 MORGAN BALSA USA PLAiT CONCEPT FLEET HOSTETLER RCM T-cRAFT SHEBER PIUS ScALE SUPER cue FOEKER 0-7 BOEINO P-i 2 P26 F4a2 F4R4 SPARROW HAWK GEE BEE MOO Y MACBRIENS TURBULENT CHRISTEN EAGLE BRISIGHELLAS STAROUSTER II V SCALE J3-BI BABY FLYBARY & OTHERS WHEEL PANTS FOR CITABRIA STARSUSTER II PITTS SKYBOLT LIBERTY SPORT CHRISTEN EAGLE PRE HAWK MULLIGAN & OTHERS LARGE SCALE PLANS AVAILABLE Please send $100 complete list supply Modelers fiberglass parts plans Write call us T & D FIBERGLASS SPECIALTIES 3BR25 eLOCK GARDEN CiTY MI 48135 PHONE 313 421-6358 BRAzED So HEAT-TREATED WIRE GEARS 9 CABANER PHONE 1313261-9064 niuriug rurlurmuluu oyrnurn TOP PERFORMANCE K&B ENGINES AirplaneMarine K&B FUELSK&B GLOW PLUGS 9 Blends4 Choices 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
Edition: Model Aviation - 1986/08
Page Numbers: 50, 51, 138, 147
Radio Control E lectrics Bob Kopski MY INCOMING LElTERS often responses recent column writer usually has some questions Sometimes letter will just friendly conversational offering Whatever case appreciate knowing column being read try promptly responsive individual requests help RC Electrics itself often reaction coming mail recent example April column devoted making highcurrent shuntbecause several readers asked measure large motor currents months column another example readers have requested information about get Electric low cost persons have varied reasons asking Some simply cant spend much thats perfectly OK Some can dont want make big investment initially just case theres related requests sim ple docile plane/system recommendation can fly schoolyard down street Finally requests have never flown RC have no equipment faced buying virtually thing once attracted idea Electrics need entry-level economi cal trainerand everything go cluding radio month well take closer look needs Easy economIcal entry-level ElectrIc recommendations follow have timetested local fliers have followed suggestions have no hesitation sharing very same offerings Some modelers have prior RC Gas experience just wanted Electric try Quite few have never built model have learned build fly RC way Vir tually have continued second third Electrics What follows does break traditional preference avoiding specific product recommendations no other way approach matter So interests sound like aboveread motor motor heartily recom mend Astro plain-bearing ferrite 05/075 Its Astro part no 2102 lists $1595 September 85 price list economical motor will blow hole sky sure has brought Electric Elation first-time continuing Electric success fellow modelers recommend motor over others purposes described above cause readily available time-proven economical large enough fly reas onably-sized plane radio combination Yes know 02s 035s cheaper theres much better selection model de signs suited larger motor consider best choice columns purpose Period note clarification due No doubt some readers wondering Whats 05/075 Fair question used both 05 075 products Nowadays same motor does both jobs means battery prop variation No matterjust read As another side point since ask recommend use car motors try Electric flight car motors Ive seen wound such favor high rpm num ber reasons suitable direct-drive props such motors relatively small fast-turning Such motor/prop combination best suited relatively-fast-moving models mostly Out line intent par ticular column As turns out motors can nicely gear belt speed-reducers too apart intent since speed-reducers add cost battery battery recommend six cells Yes know some people use seven recommend six have choice sever al cell sizes cell capacities milliampere hours nearly always recommend 1200 milliampere-hour 12 ampere-hour size Six 50 Model Aviation whole works simple RC car battery charger designed six-cell 12 Ah 1200 mAh battery packs will Charge times must reduced smali-capacity batteries Another option use costly adjustable-current charger want some tips mount motor see recommendations July 1984 Issue ModelAviation components recommended pow er system weigh about 19 oz approxi mately 1/2 weight appropriate model Gas may ilghter Electric fits needs interestsand its quiet Three possible six-ceil configurations Top Simple On/Oft servo-driven motor switch Left 950 mAh ceiis 8 oz Hoileys Smail holes switch lever allow passage Silent Flight Top Right 1200 mAh cells pushrod servo Wheel collar Issetto hit 11 oz Bottom 800 mAh group 7 oz switch near end throwlike Latter two packs Astro Flight throttle trim Switch Astro Flight six Six cells very easy charge well time after time cost less seven harder charge welldespite what may have read job 12 Ah Because largest longest-fly ing cells commonly used weigh lower-capacity examples shown get flight time purposes column flight time im portant flight performance character istics associated little less weight prop prop recommend either 7 x 6 8 x 4 nylon recommend mer sport designs latter glider designs should try both nylon Because recommended motor has relatively thin easily-bent shaft nylon props forgiving circum stance hit something wood next choice recommend avoid possible Glass/fiber-filled props definite no choice chosen model Sailplane design otherwise does have landing gear recommend make prop-stop part installation Reference 1 little extra effort its motor-shaft-saver supreme charger charger have split recommendation cost extreme im portance always recommend Astro 4005D particular charger offers distinct ad vantage having adjustable current some other features making good invest ment likely continue Electric nearly everybody tries adjustment feature used different cell capacities other hand less-costly charger designed six 12 Ah cellsand has 15-minute time switch current meteris quite satisfactory kind charger popular RC car guys normally use such battery Leisure model pictured similar Astro 4005C what need Yes can charging job cheaper such timed metered charger risk battery great opinion worth Furthermore Im gonna tell ya anyway radio suitable radio always recommend using standard digital RC system four channel transmitter least three servos starters sure get smallest servos 250 mAh flight pack Yes can get cheaper two- three-channel systemsand really cheap pulse systems consider such best move smallest servos 250 mAh pack V2ntinapd nn nnu 11* TIGER TAIL 45 DRUIX ALL ALSA KIT An new Tiger Tail 120 four strokes Designed especially F3A Turn sti-ound competition balsa kit machined wood parts Hardware package includes plug-in adjustable stab pets new wing mounts Wing Span 72 inLength 60 Wing Area 860 sq inWeight 8 lb Complete Delux Kit$15995 COMBO DEAL-Tiger Tail 4S Enyal2OR-$3950O PIUS4N ADIUtAULE PAD U NEWi last can optmste stab ncdence fce best fhght chmaCtstlstcs pair glass filled nfon adjusters e ncluded proude ha mcro screuc adiustrnent smater frost tube Mast tube s alamesum ssith matching phenohc socust 695 GP NEWt VANS MOUUINU lET wing mounting system demloped tth Ron chidgey fast neat accurate stays tight Three nylon bracksts screws machined wing blodst e included- $595 See Your Dealer Order Direct Include $1 50 Per Item UPS GATOR R/C PRODUCTS 3713 Pompano DrMe 0 Pensacola FL 325140 Phone 904 476-8639 August 1986 51 New GATOR Typical switch wiring harnesses piusa variety chargeconnectors can servo drive toggie switch too epoxying extension made fiattened siumi num tubing driiilng hoie forthe servo pushrod White Molex connectors wiring harnesses interface motor battery excitement model can brought back safe landing However opposite holding Down elevator because insuffi cient down-trim available transmitter controls hazardous skilled pilot Scale modeler insists upon reproducing large angular difference model should move CG far forward first flights progressively move rearward later sug gested Mr Ruley case overall airplane weight will probably substantially increased because volume lead nose As Mr Ruley states angular difference doesnt affect longitudinal stability know anguished experience can lead disaster resulting initial instability Toledo agaIn new Toledo exhibition hall under construction Question Will completed time Toledo Expo 1987 visited site impressed its size located newly restored downtown area city Toledo can proud what has accomplished restore beauty area blight Meanwhile old Sports Arena Weak Signals Club thirty-second annual RC Expo attracted usual overwhelming crowds exhibits manufacturers distribu tors retailers course Scale modelers Models display ranged size small Saito 30-powered Dormoy Bath tub monster Douglas DC-3 pair Quadra engines Two winners Precision Scale class models seen previously First place Best Show-winner Dennis Crooks displayed Grumman Avenger has flown two Scale Masters meets model also placed first Chicago Expo second place Cliff Tacies Savoia-Matchetti Pipistrello bomber will flying World Championships Oslo Norway July Larry Gordons 1-scale Grumman F4F-3 Wildcat Quadra engine placed third Military Scale class winner William Carper Curtiss Hawk P-6E Royal kit second-place Focke Wuif FW 190-D9 Don Parks came Pica kit Its unusual finish technique clear MonoKote Chevron Perfect Paint third place Hal Parentis newest Savoia Marchetti SM-79 Italian bomber fourth series Hal First flights made RC World Florida during March Non-Military Scale surprising entry North American SNJ Mike Barbee model finished civil colors Sky Typers skywriting group Mike used Ziroli kit fiberglass fuselage scratch-built Lake Buccaneer LA4200 amphibian secondplace winner Alvin Osminski Third place awarded Joe Mientkiewicz scratch-built Waco Taperwing year ago Orest Drobey displayed Bellanca Air Cruiser Toledo featured polished aluminum metalwork received great attention Orest returned Toledo Westland Lysander again elegantly finished large areas polished aluminum auto body repairman has neces sary skills work metal compound curves Lysanders wheel coverings produced hammering cookie sheets polishing high gloss model received Directors Award As always Toledo generates episodes within main event Toledo Tabby resi dent official Sports Arena rodent-control cat obviously ready have kittens Tabby proceded have offspring Sig ex hibit Hazel Sig-Hesters lap Hazel made hasty arrangements provide nest card board box Tabby gave birth five scale-model kittens did Tabby know among thou sands Toledo visitors Friday morning Hazel person would help time need family moved days end maintenance quarters Tabby returned through largest crowds crossing wide Arena Saturday pay visit Hazel Anyone has visited Sig estab lishment Montezuma knows Hazels love animals Bob Dolly Wischer S-221 Lapham Peak Rd Delafield WI 53018 RC Electrics/Kopski Continued page 51 important because save important ounces completed model always recommend minimum three-channel installation rud der elevator simple servo-driven ON OFF motor power switch recom mend fewer channels radio installation will weigh approximately six seven ounces Later interest proficiency grow can use leftover fourth channel ailerons some aerobatic Electric model Heres come will want decide what preferences number model types choose among include gliders Old-Timers everything else also called sport sport-trainer Within given type also choices Remember what dis cussing entry-level economy Electric will fly schoolyard down street friendly non-hair-raising way have seen power system recommenda tions above work very well quite range models Im partial own Spectra design Reference 2 offers three wing options such kits Olympic II Drifter II Olympic 650 Gentle Lady similar 2-Meter Sailplanes successful converts Electric Several fellow club members have learned fly such models Jim Zarembskis Sky Knight Reference 3 very good sport-trainer model fellow club members learned fly recommended power system Another Jims designs Wasp Leisure kit will fly comfortably Continued page 147 ATTENTION ERS QUAY BARBER MODELS C14 SHOESTRING SEMI-KiT $11995 KITSi5495 Rivets SEMI-KIT $11995 KIT -$15495 EPOXY/GLASS /FOAM/BALS CONSTRUCTION WITh DRAWINGS AND DATA FOR FORMULA 120 PYLON SPORT OR STANDOFF SCALE FULL OR SEMIKITSCosmic 8 10 lbs wAightWind 790 sq wing area SE511K1T $10995 60 2 stroke 12 4 stroke KIT $14495 kit prices plus shipping credit cards welcome Ohio residents add bi 1216 7774172 27106 8utternut Ridge Nnrth Olmated 081044070 Matched Finish System BEST APPEARANCE K&B FIBERGLASS CLOTH K&B Micra-Balloons FILLER K&B SUPER POXY RESIN K&B SUPER PONY THINNER K&B SUPER POXY PRIMER K&B SUPER PONY PAINT KaB MIXING CUPS 138 Model Aviation 0 Wing Span 52 4 cycle annels Acrobatic docile 6 8 hr rapid-fire essembiy precision pro-cut bale- end plywood complete hardware package Included capable complete AMA pattern Dave Robelens Windbreaker Playmate Featured April 1896 Model Aviation 3 Channel portFun Fly 52-4 cycle Fast assembly hand cut kit $4996 Pronto 48 span 5 2 4 cycle annel hand cut kit Easily converted electric excenent nor aegmn nar can ba sat up challenge expert *3996 50span15-25 Super Pronto2-4 cycle 4 channel Same excellent qualities Pronto acrobatic ailerons$4895 AvaIlable dealer order direct Add $2 shipping additional $2 COD save COD send check money order residents add 4% sales tasI TIDEWATER HOBBY ENTERPRISES Route 1 Box 241 D Lanexa Virginia 23089 804-966-5092 EPOXY GLASS COWLS FOR NOSEN PICA 510 MORGAN BALSA USA PLAiT CONCEPT FLEET HOSTETLER RCM T-cRAFT SHEBER PIUS ScALE SUPER cue FOEKER 0-7 BOEINO P-i 2 P26 F4a2 F4R4 SPARROW HAWK GEE BEE MOO Y MACBRIENS TURBULENT CHRISTEN EAGLE BRISIGHELLAS STAROUSTER II V SCALE J3-BI BABY FLYBARY & OTHERS WHEEL PANTS FOR CITABRIA STARSUSTER II PITTS SKYBOLT LIBERTY SPORT CHRISTEN EAGLE PRE HAWK MULLIGAN & OTHERS LARGE SCALE PLANS AVAILABLE Please send $100 complete list supply Modelers fiberglass parts plans Write call us T & D FIBERGLASS SPECIALTIES 3BR25 eLOCK GARDEN CiTY MI 48135 PHONE 313 421-6358 BRAzED So HEAT-TREATED WIRE GEARS 9 CABANER PHONE 1313261-9064 niuriug rurlurmuluu oyrnurn TOP PERFORMANCE K&B ENGINES AirplaneMarine K&B FUELSK&B GLOW PLUGS 9 Blends4 Choices 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
Edition: Model Aviation - 1986/08
Page Numbers: 50, 51, 138, 147
Radio Control E lectrics Bob Kopski MY INCOMING LElTERS often responses recent column writer usually has some questions Sometimes letter will just friendly conversational offering Whatever case appreciate knowing column being read try promptly responsive individual requests help RC Electrics itself often reaction coming mail recent example April column devoted making highcurrent shuntbecause several readers asked measure large motor currents months column another example readers have requested information about get Electric low cost persons have varied reasons asking Some simply cant spend much thats perfectly OK Some can dont want make big investment initially just case theres related requests sim ple docile plane/system recommendation can fly schoolyard down street Finally requests have never flown RC have no equipment faced buying virtually thing once attracted idea Electrics need entry-level economi cal trainerand everything go cluding radio month well take closer look needs Easy economIcal entry-level ElectrIc recommendations follow have timetested local fliers have followed suggestions have no hesitation sharing very same offerings Some modelers have prior RC Gas experience just wanted Electric try Quite few have never built model have learned build fly RC way Vir tually have continued second third Electrics What follows does break traditional preference avoiding specific product recommendations no other way approach matter So interests sound like aboveread motor motor heartily recom mend Astro plain-bearing ferrite 05/075 Its Astro part no 2102 lists $1595 September 85 price list economical motor will blow hole sky sure has brought Electric Elation first-time continuing Electric success fellow modelers recommend motor over others purposes described above cause readily available time-proven economical large enough fly reas onably-sized plane radio combination Yes know 02s 035s cheaper theres much better selection model de signs suited larger motor consider best choice columns purpose Period note clarification due No doubt some readers wondering Whats 05/075 Fair question used both 05 075 products Nowadays same motor does both jobs means battery prop variation No matterjust read As another side point since ask recommend use car motors try Electric flight car motors Ive seen wound such favor high rpm num ber reasons suitable direct-drive props such motors relatively small fast-turning Such motor/prop combination best suited relatively-fast-moving models mostly Out line intent par ticular column As turns out motors can nicely gear belt speed-reducers too apart intent since speed-reducers add cost battery battery recommend six cells Yes know some people use seven recommend six have choice sever al cell sizes cell capacities milliampere hours nearly always recommend 1200 milliampere-hour 12 ampere-hour size Six 50 Model Aviation whole works simple RC car battery charger designed six-cell 12 Ah 1200 mAh battery packs will Charge times must reduced smali-capacity batteries Another option use costly adjustable-current charger want some tips mount motor see recommendations July 1984 Issue ModelAviation components recommended pow er system weigh about 19 oz approxi mately 1/2 weight appropriate model Gas may ilghter Electric fits needs interestsand its quiet Three possible six-ceil configurations Top Simple On/Oft servo-driven motor switch Left 950 mAh ceiis 8 oz Hoileys Smail holes switch lever allow passage Silent Flight Top Right 1200 mAh cells pushrod servo Wheel collar Issetto hit 11 oz Bottom 800 mAh group 7 oz switch near end throwlike Latter two packs Astro Flight throttle trim Switch Astro Flight six Six cells very easy charge well time after time cost less seven harder charge welldespite what may have read job 12 Ah Because largest longest-fly ing cells commonly used weigh lower-capacity examples shown get flight time purposes column flight time im portant flight performance character istics associated little less weight prop prop recommend either 7 x 6 8 x 4 nylon recommend mer sport designs latter glider designs should try both nylon Because recommended motor has relatively thin easily-bent shaft nylon props forgiving circum stance hit something wood next choice recommend avoid possible Glass/fiber-filled props definite no choice chosen model Sailplane design otherwise does have landing gear recommend make prop-stop part installation Reference 1 little extra effort its motor-shaft-saver supreme charger charger have split recommendation cost extreme im portance always recommend Astro 4005D particular charger offers distinct ad vantage having adjustable current some other features making good invest ment likely continue Electric nearly everybody tries adjustment feature used different cell capacities other hand less-costly charger designed six 12 Ah cellsand has 15-minute time switch current meteris quite satisfactory kind charger popular RC car guys normally use such battery Leisure model pictured similar Astro 4005C what need Yes can charging job cheaper such timed metered charger risk battery great opinion worth Furthermore Im gonna tell ya anyway radio suitable radio always recommend using standard digital RC system four channel transmitter least three servos starters sure get smallest servos 250 mAh flight pack Yes can get cheaper two- three-channel systemsand really cheap pulse systems consider such best move smallest servos 250 mAh pack V2ntinapd nn nnu 11* TIGER TAIL 45 DRUIX ALL ALSA KIT An new Tiger Tail 120 four strokes Designed especially F3A Turn sti-ound competition balsa kit machined wood parts Hardware package includes plug-in adjustable stab pets new wing mounts Wing Span 72 inLength 60 Wing Area 860 sq inWeight 8 lb Complete Delux Kit$15995 COMBO DEAL-Tiger Tail 4S Enyal2OR-$3950O PIUS4N ADIUtAULE PAD U NEWi last can optmste stab ncdence fce best fhght chmaCtstlstcs pair glass filled nfon adjusters e ncluded proude ha mcro screuc adiustrnent smater frost tube Mast tube s alamesum ssith matching phenohc socust 695 GP NEWt VANS MOUUINU lET wing mounting system demloped tth Ron chidgey fast neat accurate stays tight Three nylon bracksts screws machined wing blodst e included- $595 See Your Dealer Order Direct Include $1 50 Per Item UPS GATOR R/C PRODUCTS 3713 Pompano DrMe 0 Pensacola FL 325140 Phone 904 476-8639 August 1986 51 New GATOR Typical switch wiring harnesses piusa variety chargeconnectors can servo drive toggie switch too epoxying extension made fiattened siumi num tubing driiilng hoie forthe servo pushrod White Molex connectors wiring harnesses interface motor battery excitement model can brought back safe landing However opposite holding Down elevator because insuffi cient down-trim available transmitter controls hazardous skilled pilot Scale modeler insists upon reproducing large angular difference model should move CG far forward first flights progressively move rearward later sug gested Mr Ruley case overall airplane weight will probably substantially increased because volume lead nose As Mr Ruley states angular difference doesnt affect longitudinal stability know anguished experience can lead disaster resulting initial instability Toledo agaIn new Toledo exhibition hall under construction Question Will completed time Toledo Expo 1987 visited site impressed its size located newly restored downtown area city Toledo can proud what has accomplished restore beauty area blight Meanwhile old Sports Arena Weak Signals Club thirty-second annual RC Expo attracted usual overwhelming crowds exhibits manufacturers distribu tors retailers course Scale modelers Models display ranged size small Saito 30-powered Dormoy Bath tub monster Douglas DC-3 pair Quadra engines Two winners Precision Scale class models seen previously First place Best Show-winner Dennis Crooks displayed Grumman Avenger has flown two Scale Masters meets model also placed first Chicago Expo second place Cliff Tacies Savoia-Matchetti Pipistrello bomber will flying World Championships Oslo Norway July Larry Gordons 1-scale Grumman F4F-3 Wildcat Quadra engine placed third Military Scale class winner William Carper Curtiss Hawk P-6E Royal kit second-place Focke Wuif FW 190-D9 Don Parks came Pica kit Its unusual finish technique clear MonoKote Chevron Perfect Paint third place Hal Parentis newest Savoia Marchetti SM-79 Italian bomber fourth series Hal First flights made RC World Florida during March Non-Military Scale surprising entry North American SNJ Mike Barbee model finished civil colors Sky Typers skywriting group Mike used Ziroli kit fiberglass fuselage scratch-built Lake Buccaneer LA4200 amphibian secondplace winner Alvin Osminski Third place awarded Joe Mientkiewicz scratch-built Waco Taperwing year ago Orest Drobey displayed Bellanca Air Cruiser Toledo featured polished aluminum metalwork received great attention Orest returned Toledo Westland Lysander again elegantly finished large areas polished aluminum auto body repairman has neces sary skills work metal compound curves Lysanders wheel coverings produced hammering cookie sheets polishing high gloss model received Directors Award As always Toledo generates episodes within main event Toledo Tabby resi dent official Sports Arena rodent-control cat obviously ready have kittens Tabby proceded have offspring Sig ex hibit Hazel Sig-Hesters lap Hazel made hasty arrangements provide nest card board box Tabby gave birth five scale-model kittens did Tabby know among thou sands Toledo visitors Friday morning Hazel person would help time need family moved days end maintenance quarters Tabby returned through largest crowds crossing wide Arena Saturday pay visit Hazel Anyone has visited Sig estab lishment Montezuma knows Hazels love animals Bob Dolly Wischer S-221 Lapham Peak Rd Delafield WI 53018 RC Electrics/Kopski Continued page 51 important because save important ounces completed model always recommend minimum three-channel installation rud der elevator simple servo-driven ON OFF motor power switch recom mend fewer channels radio installation will weigh approximately six seven ounces Later interest proficiency grow can use leftover fourth channel ailerons some aerobatic Electric model Heres come will want decide what preferences number model types choose among include gliders Old-Timers everything else also called sport sport-trainer Within given type also choices Remember what dis cussing entry-level economy Electric will fly schoolyard down street friendly non-hair-raising way have seen power system recommenda tions above work very well quite range models Im partial own Spectra design Reference 2 offers three wing options such kits Olympic II Drifter II Olympic 650 Gentle Lady similar 2-Meter Sailplanes successful converts Electric Several fellow club members have learned fly such models Jim Zarembskis Sky Knight Reference 3 very good sport-trainer model fellow club members learned fly recommended power system Another Jims designs Wasp Leisure kit will fly comfortably Continued page 147 ATTENTION ERS QUAY BARBER MODELS C14 SHOESTRING SEMI-KiT $11995 KITSi5495 Rivets SEMI-KIT $11995 KIT -$15495 EPOXY/GLASS /FOAM/BALS CONSTRUCTION WITh DRAWINGS AND DATA FOR FORMULA 120 PYLON SPORT OR STANDOFF SCALE FULL OR SEMIKITSCosmic 8 10 lbs wAightWind 790 sq wing area SE511K1T $10995 60 2 stroke 12 4 stroke KIT $14495 kit prices plus shipping credit cards welcome Ohio residents add bi 1216 7774172 27106 8utternut Ridge Nnrth Olmated 081044070 Matched Finish System BEST APPEARANCE K&B FIBERGLASS CLOTH K&B Micra-Balloons FILLER K&B SUPER POXY RESIN K&B SUPER PONY THINNER K&B SUPER POXY PRIMER K&B SUPER PONY PAINT KaB MIXING CUPS 138 Model Aviation 0 Wing Span 52 4 cycle annels Acrobatic docile 6 8 hr rapid-fire essembiy precision pro-cut bale- end plywood complete hardware package Included capable complete AMA pattern Dave Robelens Windbreaker Playmate Featured April 1896 Model Aviation 3 Channel portFun Fly 52-4 cycle Fast assembly hand cut kit $4996 Pronto 48 span 5 2 4 cycle annel hand cut kit Easily converted electric excenent nor aegmn nar can ba sat up challenge expert *3996 50span15-25 Super Pronto2-4 cycle 4 channel Same excellent qualities Pronto acrobatic ailerons$4895 AvaIlable dealer order direct Add $2 shipping additional $2 COD save COD send check money order residents add 4% sales tasI TIDEWATER HOBBY ENTERPRISES Route 1 Box 241 D Lanexa Virginia 23089 804-966-5092 EPOXY GLASS COWLS FOR NOSEN PICA 510 MORGAN BALSA USA PLAiT CONCEPT FLEET HOSTETLER RCM T-cRAFT SHEBER PIUS ScALE SUPER cue FOEKER 0-7 BOEINO P-i 2 P26 F4a2 F4R4 SPARROW HAWK GEE BEE MOO Y MACBRIENS TURBULENT CHRISTEN EAGLE BRISIGHELLAS STAROUSTER II V SCALE J3-BI BABY FLYBARY & OTHERS WHEEL PANTS FOR CITABRIA STARSUSTER II PITTS SKYBOLT LIBERTY SPORT CHRISTEN EAGLE PRE HAWK MULLIGAN & OTHERS LARGE SCALE PLANS AVAILABLE Please send $100 complete list supply Modelers fiberglass parts plans Write call us T & D FIBERGLASS SPECIALTIES 3BR25 eLOCK GARDEN CiTY MI 48135 PHONE 313 421-6358 BRAzED So HEAT-TREATED WIRE GEARS 9 CABANER PHONE 1313261-9064 niuriug rurlurmuluu oyrnurn TOP PERFORMANCE K&B ENGINES AirplaneMarine K&B FUELSK&B GLOW PLUGS 9 Blends4 Choices 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