ELECTRIC electronic control systems CL Scale models have covered some de gree column over past few years couple letters received recently have prompted revisit subject time comments based letters Mike Gretz Monte zuma IA Jeny Blaszczyk Beasalem PA Mikes letter actually copy response Dale Campbell Newton NC Mike outlined history CL electronic systems basics operation Mike thought formation might interest some newer CL Scale modelers letter Jerry about electric relay system uses operating flaps P-68 Victor Italian-made commuter plane First lets cover history basics electronic systems Mike indicated Dale Mike Stott tough CL Scale competitor early Seventies pretty much originator idea using electronics CL 1973 Oshkosh Nats Mike discussed idea passing signals through pair insulated lines Ken Wilson hobby dealer EK Logitrol service man long after both Mike Gretz working systems both flew models equipped new elec tronic systems 1974 World Championships Lakehurst NJ accompanying sketch shows basic de tails Stott system constructed Ken Wilson using EK Logitrol compo nents system composed encoder sec tion standard RC transmitter set insulated lines decoder servos Jerry Blaszczyks Philadelphia PA P-68 Victor Below R has pages before back February 66 time shows us simple way actuates its flaps coupled throttle battery pack DPDT switch control handle send current through insulated control lines pair control relays batteries model turn run servo actuates flaps airborne relay/battery module seen Below L outside model Jerry also makes use balance planel System inexpensive RC receiver six-function control box contains six trim-type slide controls encoder its power supply As slide control moved signal gener ated encoder passed through sulated lines decoder plane interprets signal operates appropriate servo Please note signal generated electrical-impulse type radio frequency RE signal no radio transmitter re ceiver involved must also remember Control Line competition rules Control Line General paragraph 2 strictly prohibit use radio-frequency signals control CL models lines used plastic-coated steel fishing leader cable measuring 030-in thickness 043 overall plastic covering labeled 120-lb test two-line system chosen cause functions including throttle control performed control box Elevator control kept mechanical function using standard bellcrank system Following successful use new system 74 World Championships Stott ar rangement Ken Wilson manufacture systems due relatively small number CL Scale modelers US sales brisk fact appears three units sold Bill Harney Ed Rhoads Dan Osdoba interesting note Scale modelers very slow making use new revolutionary system several foreign countries adopted system hesitation 1976 World Championships Scale modelers England France Russia Continued page 162 NYLON NY LL C R C ON 0 0 RANYL 1A 000005 PLAGDN CONNECTORS 6 FONCYDYN CANYROL ORCODER ANITRAYRITA ENCODER ANDNICAD BATTERIES 550 MA NICAD NATOERY PACK MIKE OTOTTN EEECTRONOC CONTROL SYSTEM Developed Ken WSOson 0973 January 1988 71 Control Line Scale Bill Boss MODEL ~1 INSULATED LINES_ Mike Stott sparked development full-house electronic control system CL models shown sketch 1 back 73 1974 Aerolympics Lakehurst NJ Mike Gretz used sytem modelsthe first time US Mike Gretzs Zlin R seen about take off meet Sorry dont know helper European modelers quick adopt sytem drawing Use Titebond cement prevent warps later Matching assembly simple front view wing post drawn board will ensure post installed correctly dihedral both sides After rear post completely dry wing should attached fuselage rear post bottom tube front post cemented front spar making certain 1 wing 900 motor stick top view 2 right wing has aboauat l/ incidence left Titebond dries ship should ready fly Dont surprised little overweight Quite bit material will removed mo tor stick during flight testing Flying Install prop rubber mo tor made according schedule drawing Put enough winds motor achieve level flight Adjust incidence required get smooth level flight left wing sags down ship resists turning increase left wing incidence about %2 readjusting glue joint front wing post Titebond can softened water joint reglued necessary left circle 30 ft diameter desired use left rudder little left tail tilt left side high viewed rear may added twisting tail boom necessary point youll able put about 1000 turns motor before crabbing stalling begins assert itself Crabbing stalling caused insufficient left wing lift offset increasing motor torque left wing sags down moves ahead left slip opens up left circle flopping ungraceful stall occurs re covery process repeats itself until torque drops down sustainable level point fliers crank left rudder go lower-pitch prop both Dont either Note wing twist governed torsional strength motor stick tween wing posts stick too strong torsionally between posts will re sist twisting bring crabbing/stalling carefully sanding stick between wing posts toward elliptical shape can gradually increase full power wing twist eventually eliminate crabbing stalling After sanding will note ship will accept little torque until finally will take full winds go up like Mulvihill model Also note motor stick too weak start will worthless also find useful sand little front rear stick shown drawing extra downthrust bend tail bend will help keep flying speed up thus minimizing need wing twist fully wound tail will usually tilted wrong direction right side slightly high causes somewhat larg er full-power circle must offset downthrust bend stick bend tail bend stall avoided Eventually some additional left stab tilt may turn out solution Another feature enables Seren dipity offset torque left wing flare steep full-power climb center lift much closer leading edge wing characteristic causes left leading edge bend upward causing flare helps left wing balance torque amount flare depends strength taper left front spar sharp taper causes flare appear out near tip good less tapered spar weaker near wing center will flare evenly over half-span wing will add considerable torque control causing right wing have negative angle attack flaring charac teristics models wing built spar dimensions Keep mind ever additional left wing flare can obtained reducing spar depth near left front wing post successive light sand ings sanding paddle curved block Rubber motor have using old Pirel li Wakefield motors strip down rotary rubber cutter Check around among Free Flight friends see can find some youll have use American-made rubber sold today Indoor suppliers Under low ceilings Easy Bs flown US-made rubber should useful because its flatter torque curve Lowceiling motors should shorter quite lot wider usual high-ceiling motor Level flight should almost achieved last full row knots Such motor should backed off 30 40% until model barely climbs Keep mind completed Easy B really finished After flying anything right can corrected soften ing glue joints water solvent re moving offending part replacing something better Fly model until get best performance out can build better model keeping mind structural integrity aerody namic harmony bit important low weight Finally real high-ceiling secret design its ability climb 180 ft full burst long thin motor spin off nearly winds slow open letdown Under Category II III ceilings has ability fly prop running 85 rpm very low rubber weight Suppliers Sig Manufacturing Co tnc Montezuma IA 50171 Ray Harlan 15 Happy Hollow Rd wayland MA 01778 Micro-X-Products PO Box 1063 Lorain OH 44055 Indoor Model supply Box C Garberville CA 95440 Jim Jones 36631 Ledgestone Dr Mt Clemens MI 48043 Franklin Chemical Industries Columbus OH 43207 CL Scale/Boss Continued page 71 operated nine-volt battery supply course set insulated flying lines re quired Instead using plastic-covered steel fish ing leader material insulated lines Jerry coated standard set flying lines butyrate dope says has used couple years problems White Jerry may have successful insu lating lines manner described believe use fishing leader material safer long run standpoint preventing electric shorts Jerry also noted two bat teries relays mounted fuselage seen photo serve balancing weight model Operation system rather simple required push switch hanContinued page 168 162 Model Aviation WACO UPF-7 I/ SCALE 72 1204COR LARGER SEND $200 FOR COMPLETE CATALOG OF FINE KITS IKON NWST PO Box 566 Auburn WA 98071 2069418248 incorporated system models wasnt until early Eighties CL Scale modelers country really got inter ested use new idea 1983 Clancy Arnold flew P-38 equipped electronic control system featured October 1984 column column gives fairly good de scription basic systems works various types input control can employed Thats reason did spend time months column working details Charles Bauer has also user pro moter electronic system has used several models since about 1984 understanding both Clancy unaries trying market systems would too glad send information interested parties Youll find addresses end item Another approach electronic control sys tem used Jeff Perez flying Piper Co manche during recent FAI team trials Lincoln NE Jeff used Circus Hobbies JR radio direct-servo-coupling feature fea ture permits make direct connection via plug-and-cord arrangement between transmit ter receiver test operation RC models servos radio frequency trans mission Perez took advantage feature substi tuting insulated lines test patch cord sup plied radio system Jeff just strapped transmitter box belt sure could accused using radio signals removed frequency module transmitter know Circus Hobbies still advertis es JR radio systems am sure servo test feature still employed type ar rangement interests would good idea check Circus Hobbies first addition modelers mentioned above Mike Gretz also indicated Dick Byron Aus tralia Graves Steve Ashby soon will using electronic systems planes appears finally have some acceptance system permits CL flier incorpor ate operating features modeland al lows him less complicated manner through use servos rather via myr iad pushrods mechanical devices Perhaps things has previously kept CL modeler using type system cost depending number servos used can somewhere between $200 $300 Anyone desiring information Clancy Ar nold Charles Bauer should write di rectly following addresses Clancy Arnold 7536-C Ivywood Drive Indianapolis IN 46250 Charles Bauer 4944 No Orange Norridge IL 60656 flap control used Jerry Blaszczyk Phila delphia PA Italian P-63 Victor may sophisticated electronic system de scribed above operational fea ture desired type system might appropriate accompanying sketch shows wiring Jerrys electrically operated flap servo sys tem consists battery supply doublepole double-throw DPDT momentary switch mounted small chassis box measuring ap proximately 24 x 2 x 1% can either attached control handle strapped belt alrcraft two mini-type single-pole double-throw SPDT relays electric servo battery supply components avail able local Radio Shack store follows four nine-volt battery snap connectors Part No 270-325 DPDT momentary switch chassis box Part No 270-235 two mini-size SPDT relays Part No 275-004 RC servo choice should type can dle direction other have flaps move up down Releasing switch handle automatically allows switch move its Off position thereby stopping servo operation Also note method flap operation rather simple inexpensive method about $20 relays batteries connectors control box meeting new 1988 competition rule states flap operation receive maximum points must independent throttle control would like thank both Mike Gretz Jerry Blaszczyk input months column DIRECTORY OF CL SCALE ITEMS 1987 issues Model Aviation January Comments 1988-89 rules change proposals author Contest report GSCB 10th An nual Scale rally Directory 1986 CL Scale col umn items February Multi-engine starting switch box Art Snowden Club ReportCholla Choppers Tucson AZ Hobbypoxy paint formulas 34102 Light Green FS 34902 Dark Green FS 36081 Dark Gray FS 37038 Black 168 Model Aviation CL Scale/Boss Continued page 162 j Statement Ownership Management Circulation Aecjuired 39 USC 3685 lA Title Publication Model Aviation 1 B Publication No 087930 2 Date Filing September 21 1987 3 Frequency iaaue Monthly A No isauea published annually 12 B Annual subscription price $1800 4 Complete Mailing Addreaa Known Office Pub lication atreet city county atate ZIP code printera 1810 Samuel Morae Dr Reston VA 22090 5 Complete mailing address headquarters general buaineas officea publisher printer 1810 Samuel Morae Dr Reston VA 22090 6 Full namea complete mailing addreaa publisher editor managing editor thia item must left blank Publiaher Carl Wheeley 1810 Samuel Morse Dr Reston VA 22090 Editor Carl Wheeley 1810 Samuel Morae Dr Reaton VA 22090 Managing editor None 7 Owner Academy Model Aeronautica Inc 1810 Samuel Morae Dr Reston VA 22090 8 Known bondholders mortgagees other ae curity holders owning holding 1 percent total amount bonda mortgages oth er aecuritlee None 9 For completion nonprofit organizations author ized mail apecial rates Section 42312 DMM purpoae function nonprofit atatua thia organization exempt atatua Fed eral income tax purposes 1 Haa changed during preceding 12 montha Extent Nature Circulation 10 Actual AverageNo copNo cop-lea lea aingle issue dur- aue pub ing pre- liahed ceding 12 neareat montha filing date ATotal No Copies Net Preaa Run96938105900 BPaid and/or Requested Circulation 1 Salea through dealera carriera atreet vendora counter aales34663696 2 Mail Subacriptions9049799491 CTotal Paid end/or Re quested Circulation Sum lOBi 10B293963103187 DFree Distribution Mail Carrier Other Means Samples Complimentary Other Free Copies21622161 ETotal Distribution Sum C D96125105348 FCopies Distributed 1 Office use left over unaccounted spoiled after printing609544 2Returns News Agents2048 GTotal Sum E Fl 2should equal net press run shown A96938105900 11 certify statements made cor rect complete Carl Wheeley Editor Publisher MarchMaking dummy radial engine dressing up windshields Richard Schneider Use wooden burnishing tools using duct tape Comments FAI team selection trials East Coast modelers AprilBasic rules better performance Scale contests Bob Emmett NASA Newsletter NASAsponsored meet program MayDreamerflight controller rocker arm type Doug Dahlke Use intermediate bellcranks author DocumentationScale Model Re search Club ReportDallas Model Aircraft Association JuneCommcnts CL Scale George Gaydos Scale Documentation source Repla-Tech International JulyReport WRAM Show Scale color Dark Gray informa tion Cam Martin Hobbypoxy color formulas Pale Green Sand Tan Light Gray August Spoke wheelsmake own Bob Furr Scale Documentationbook Great Aircraft Collections World return Profile Publica tions SeptemberScale rules discussion author subject towing gliders banners etc New sanding tools Grate Shapes Bell Rock Industries OctoberP-38 working canopy side win dows George Gaydos Hint workshop Bob FurrUse plastic model instead three-views model documen tatton G-S profile kit survey Cam Martin November1987 Nationals report Mike Pratt DecemberUse overhead projector application panel lines rivet patterns model Charles Bauer Attention control system details makes better operation longer model life John Hall Please send correspondenceand espe cially photosrelating CL Scale Bill Boss 77-06 269th Street New Hyde Park NY 11040 CL Aerobatics/Fancher Continued page 72 Japanese tissue finished two thin coats nitrate dope fuel proofer red airplane Forster 29 power weighed 24 oz yellow model McCoy 19 drop-off landing gear its flying weight mere 19 oz George Aldrich saw models Dallas Nationals year shared motel room says got some ideas No bler Super Chiefs ably alrfoil-shaped vertical tail no rudder offset After Nationals took some time off toured East demonstrating Free Flight GATOR RIC PRODUCTS PLUG-IN ADJUSTABLE STAB KIT last can optimize stab incidence best flight charac teristics pair glass filled nylon adjusters included provide micro screw adjustment smaller front tube Main tube aluminum matching phenolic socket TRANSMITTER CASE An inexpensive rugged molded case protect expensive transmitter both two stick single stick transmitters Srown leather grain aluminum trim locking clasp S 1895 WING TUBE & SOCKETS Aluminum alloy tubing plug-in wings Included pair special slip-fit phenolic sockets build wing structure Now size models 715 dia x 25 895 tdiasiZ5 995 1diax351495 feather Ilte glass cloth 7 oz/sq yd est weave Fastest Filling est Finished Weight Big 3 Sq Yard Pkg Detailed Instructions $895 ENGINE SLEEVE & BEARING PULLER Pull tight sleeves bearings easily Out damage new 6Us 17MM rear bearings Sleeve Puller5 795 Searing Puller5 695 SothForS1395 IVANS MAGIC GADGET protractor device used Ivan Kristensen accurately measure WAUB aileron elevator rudder throw rakes guess work out tool complete instructions Ingtrimming out airplane quality book carrying caseS 795 NEWI WING MOUIrrING SET wing mounting system developed Ron Chidgey fast neat accurate stays tight Three nylon brackets screws machined wood wing blocks included S 595 See Dealer Order Direct Inciude S2 Per Item UPS GATOR RIC PRODUCTS 3713 Pompano Dr acola FL 32514 476-8639 January 1988 171 An new tiger Tail 120 four strokes piped 60 two strokes beautiful performer competition just showing offl balsa kit machined wood parts complete hardware package includes plug-in adjustable stab parts new wing mounts Wing Span -72 inWing Area 860 sq Complete Delus KitS 15995
Edition: Model Aviation - 1988/01
Page Numbers: 71, 162, 168, 171
Edition: Model Aviation - 1988/01
Page Numbers: 71, 162, 168, 171
ELECTRIC electronic control systems CL Scale models have covered some de gree column over past few years couple letters received recently have prompted revisit subject time comments based letters Mike Gretz Monte zuma IA Jeny Blaszczyk Beasalem PA Mikes letter actually copy response Dale Campbell Newton NC Mike outlined history CL electronic systems basics operation Mike thought formation might interest some newer CL Scale modelers letter Jerry about electric relay system uses operating flaps P-68 Victor Italian-made commuter plane First lets cover history basics electronic systems Mike indicated Dale Mike Stott tough CL Scale competitor early Seventies pretty much originator idea using electronics CL 1973 Oshkosh Nats Mike discussed idea passing signals through pair insulated lines Ken Wilson hobby dealer EK Logitrol service man long after both Mike Gretz working systems both flew models equipped new elec tronic systems 1974 World Championships Lakehurst NJ accompanying sketch shows basic de tails Stott system constructed Ken Wilson using EK Logitrol compo nents system composed encoder sec tion standard RC transmitter set insulated lines decoder servos Jerry Blaszczyks Philadelphia PA P-68 Victor Below R has pages before back February 66 time shows us simple way actuates its flaps coupled throttle battery pack DPDT switch control handle send current through insulated control lines pair control relays batteries model turn run servo actuates flaps airborne relay/battery module seen Below L outside model Jerry also makes use balance planel System inexpensive RC receiver six-function control box contains six trim-type slide controls encoder its power supply As slide control moved signal gener ated encoder passed through sulated lines decoder plane interprets signal operates appropriate servo Please note signal generated electrical-impulse type radio frequency RE signal no radio transmitter re ceiver involved must also remember Control Line competition rules Control Line General paragraph 2 strictly prohibit use radio-frequency signals control CL models lines used plastic-coated steel fishing leader cable measuring 030-in thickness 043 overall plastic covering labeled 120-lb test two-line system chosen cause functions including throttle control performed control box Elevator control kept mechanical function using standard bellcrank system Following successful use new system 74 World Championships Stott ar rangement Ken Wilson manufacture systems due relatively small number CL Scale modelers US sales brisk fact appears three units sold Bill Harney Ed Rhoads Dan Osdoba interesting note Scale modelers very slow making use new revolutionary system several foreign countries adopted system hesitation 1976 World Championships Scale modelers England France Russia Continued page 162 NYLON NY LL C R C ON 0 0 RANYL 1A 000005 PLAGDN CONNECTORS 6 FONCYDYN CANYROL ORCODER ANITRAYRITA ENCODER ANDNICAD BATTERIES 550 MA NICAD NATOERY PACK MIKE OTOTTN EEECTRONOC CONTROL SYSTEM Developed Ken WSOson 0973 January 1988 71 Control Line Scale Bill Boss MODEL ~1 INSULATED LINES_ Mike Stott sparked development full-house electronic control system CL models shown sketch 1 back 73 1974 Aerolympics Lakehurst NJ Mike Gretz used sytem modelsthe first time US Mike Gretzs Zlin R seen about take off meet Sorry dont know helper European modelers quick adopt sytem drawing Use Titebond cement prevent warps later Matching assembly simple front view wing post drawn board will ensure post installed correctly dihedral both sides After rear post completely dry wing should attached fuselage rear post bottom tube front post cemented front spar making certain 1 wing 900 motor stick top view 2 right wing has aboauat l/ incidence left Titebond dries ship should ready fly Dont surprised little overweight Quite bit material will removed mo tor stick during flight testing Flying Install prop rubber mo tor made according schedule drawing Put enough winds motor achieve level flight Adjust incidence required get smooth level flight left wing sags down ship resists turning increase left wing incidence about %2 readjusting glue joint front wing post Titebond can softened water joint reglued necessary left circle 30 ft diameter desired use left rudder little left tail tilt left side high viewed rear may added twisting tail boom necessary point youll able put about 1000 turns motor before crabbing stalling begins assert itself Crabbing stalling caused insufficient left wing lift offset increasing motor torque left wing sags down moves ahead left slip opens up left circle flopping ungraceful stall occurs re covery process repeats itself until torque drops down sustainable level point fliers crank left rudder go lower-pitch prop both Dont either Note wing twist governed torsional strength motor stick tween wing posts stick too strong torsionally between posts will re sist twisting bring crabbing/stalling carefully sanding stick between wing posts toward elliptical shape can gradually increase full power wing twist eventually eliminate crabbing stalling After sanding will note ship will accept little torque until finally will take full winds go up like Mulvihill model Also note motor stick too weak start will worthless also find useful sand little front rear stick shown drawing extra downthrust bend tail bend will help keep flying speed up thus minimizing need wing twist fully wound tail will usually tilted wrong direction right side slightly high causes somewhat larg er full-power circle must offset downthrust bend stick bend tail bend stall avoided Eventually some additional left stab tilt may turn out solution Another feature enables Seren dipity offset torque left wing flare steep full-power climb center lift much closer leading edge wing characteristic causes left leading edge bend upward causing flare helps left wing balance torque amount flare depends strength taper left front spar sharp taper causes flare appear out near tip good less tapered spar weaker near wing center will flare evenly over half-span wing will add considerable torque control causing right wing have negative angle attack flaring charac teristics models wing built spar dimensions Keep mind ever additional left wing flare can obtained reducing spar depth near left front wing post successive light sand ings sanding paddle curved block Rubber motor have using old Pirel li Wakefield motors strip down rotary rubber cutter Check around among Free Flight friends see can find some youll have use American-made rubber sold today Indoor suppliers Under low ceilings Easy Bs flown US-made rubber should useful because its flatter torque curve Lowceiling motors should shorter quite lot wider usual high-ceiling motor Level flight should almost achieved last full row knots Such motor should backed off 30 40% until model barely climbs Keep mind completed Easy B really finished After flying anything right can corrected soften ing glue joints water solvent re moving offending part replacing something better Fly model until get best performance out can build better model keeping mind structural integrity aerody namic harmony bit important low weight Finally real high-ceiling secret design its ability climb 180 ft full burst long thin motor spin off nearly winds slow open letdown Under Category II III ceilings has ability fly prop running 85 rpm very low rubber weight Suppliers Sig Manufacturing Co tnc Montezuma IA 50171 Ray Harlan 15 Happy Hollow Rd wayland MA 01778 Micro-X-Products PO Box 1063 Lorain OH 44055 Indoor Model supply Box C Garberville CA 95440 Jim Jones 36631 Ledgestone Dr Mt Clemens MI 48043 Franklin Chemical Industries Columbus OH 43207 CL Scale/Boss Continued page 71 operated nine-volt battery supply course set insulated flying lines re quired Instead using plastic-covered steel fish ing leader material insulated lines Jerry coated standard set flying lines butyrate dope says has used couple years problems White Jerry may have successful insu lating lines manner described believe use fishing leader material safer long run standpoint preventing electric shorts Jerry also noted two bat teries relays mounted fuselage seen photo serve balancing weight model Operation system rather simple required push switch hanContinued page 168 162 Model Aviation WACO UPF-7 I/ SCALE 72 1204COR LARGER SEND $200 FOR COMPLETE CATALOG OF FINE KITS IKON NWST PO Box 566 Auburn WA 98071 2069418248 incorporated system models wasnt until early Eighties CL Scale modelers country really got inter ested use new idea 1983 Clancy Arnold flew P-38 equipped electronic control system featured October 1984 column column gives fairly good de scription basic systems works various types input control can employed Thats reason did spend time months column working details Charles Bauer has also user pro moter electronic system has used several models since about 1984 understanding both Clancy unaries trying market systems would too glad send information interested parties Youll find addresses end item Another approach electronic control sys tem used Jeff Perez flying Piper Co manche during recent FAI team trials Lincoln NE Jeff used Circus Hobbies JR radio direct-servo-coupling feature fea ture permits make direct connection via plug-and-cord arrangement between transmit ter receiver test operation RC models servos radio frequency trans mission Perez took advantage feature substi tuting insulated lines test patch cord sup plied radio system Jeff just strapped transmitter box belt sure could accused using radio signals removed frequency module transmitter know Circus Hobbies still advertis es JR radio systems am sure servo test feature still employed type ar rangement interests would good idea check Circus Hobbies first addition modelers mentioned above Mike Gretz also indicated Dick Byron Aus tralia Graves Steve Ashby soon will using electronic systems planes appears finally have some acceptance system permits CL flier incorpor ate operating features modeland al lows him less complicated manner through use servos rather via myr iad pushrods mechanical devices Perhaps things has previously kept CL modeler using type system cost depending number servos used can somewhere between $200 $300 Anyone desiring information Clancy Ar nold Charles Bauer should write di rectly following addresses Clancy Arnold 7536-C Ivywood Drive Indianapolis IN 46250 Charles Bauer 4944 No Orange Norridge IL 60656 flap control used Jerry Blaszczyk Phila delphia PA Italian P-63 Victor may sophisticated electronic system de scribed above operational fea ture desired type system might appropriate accompanying sketch shows wiring Jerrys electrically operated flap servo sys tem consists battery supply doublepole double-throw DPDT momentary switch mounted small chassis box measuring ap proximately 24 x 2 x 1% can either attached control handle strapped belt alrcraft two mini-type single-pole double-throw SPDT relays electric servo battery supply components avail able local Radio Shack store follows four nine-volt battery snap connectors Part No 270-325 DPDT momentary switch chassis box Part No 270-235 two mini-size SPDT relays Part No 275-004 RC servo choice should type can dle direction other have flaps move up down Releasing switch handle automatically allows switch move its Off position thereby stopping servo operation Also note method flap operation rather simple inexpensive method about $20 relays batteries connectors control box meeting new 1988 competition rule states flap operation receive maximum points must independent throttle control would like thank both Mike Gretz Jerry Blaszczyk input months column DIRECTORY OF CL SCALE ITEMS 1987 issues Model Aviation January Comments 1988-89 rules change proposals author Contest report GSCB 10th An nual Scale rally Directory 1986 CL Scale col umn items February Multi-engine starting switch box Art Snowden Club ReportCholla Choppers Tucson AZ Hobbypoxy paint formulas 34102 Light Green FS 34902 Dark Green FS 36081 Dark Gray FS 37038 Black 168 Model Aviation CL Scale/Boss Continued page 162 j Statement Ownership Management Circulation Aecjuired 39 USC 3685 lA Title Publication Model Aviation 1 B Publication No 087930 2 Date Filing September 21 1987 3 Frequency iaaue Monthly A No isauea published annually 12 B Annual subscription price $1800 4 Complete Mailing Addreaa Known Office Pub lication atreet city county atate ZIP code printera 1810 Samuel Morae Dr Reston VA 22090 5 Complete mailing address headquarters general buaineas officea publisher printer 1810 Samuel Morae Dr Reston VA 22090 6 Full namea complete mailing addreaa publisher editor managing editor thia item must left blank Publiaher Carl Wheeley 1810 Samuel Morse Dr Reston VA 22090 Editor Carl Wheeley 1810 Samuel Morae Dr Reaton VA 22090 Managing editor None 7 Owner Academy Model Aeronautica Inc 1810 Samuel Morae Dr Reston VA 22090 8 Known bondholders mortgagees other ae curity holders owning holding 1 percent total amount bonda mortgages oth er aecuritlee None 9 For completion nonprofit organizations author ized mail apecial rates Section 42312 DMM purpoae function nonprofit atatua thia organization exempt atatua Fed eral income tax purposes 1 Haa changed during preceding 12 montha Extent Nature Circulation 10 Actual AverageNo copNo cop-lea lea aingle issue dur- aue pub ing pre- liahed ceding 12 neareat montha filing date ATotal No Copies Net Preaa Run96938105900 BPaid and/or Requested Circulation 1 Salea through dealera carriera atreet vendora counter aales34663696 2 Mail Subacriptions9049799491 CTotal Paid end/or Re quested Circulation Sum lOBi 10B293963103187 DFree Distribution Mail Carrier Other Means Samples Complimentary Other Free Copies21622161 ETotal Distribution Sum C D96125105348 FCopies Distributed 1 Office use left over unaccounted spoiled after printing609544 2Returns News Agents2048 GTotal Sum E Fl 2should equal net press run shown A96938105900 11 certify statements made cor rect complete Carl Wheeley Editor Publisher MarchMaking dummy radial engine dressing up windshields Richard Schneider Use wooden burnishing tools using duct tape Comments FAI team selection trials East Coast modelers AprilBasic rules better performance Scale contests Bob Emmett NASA Newsletter NASAsponsored meet program MayDreamerflight controller rocker arm type Doug Dahlke Use intermediate bellcranks author DocumentationScale Model Re search Club ReportDallas Model Aircraft Association JuneCommcnts CL Scale George Gaydos Scale Documentation source Repla-Tech International JulyReport WRAM Show Scale color Dark Gray informa tion Cam Martin Hobbypoxy color formulas Pale Green Sand Tan Light Gray August Spoke wheelsmake own Bob Furr Scale Documentationbook Great Aircraft Collections World return Profile Publica tions SeptemberScale rules discussion author subject towing gliders banners etc New sanding tools Grate Shapes Bell Rock Industries OctoberP-38 working canopy side win dows George Gaydos Hint workshop Bob FurrUse plastic model instead three-views model documen tatton G-S profile kit survey Cam Martin November1987 Nationals report Mike Pratt DecemberUse overhead projector application panel lines rivet patterns model Charles Bauer Attention control system details makes better operation longer model life John Hall Please send correspondenceand espe cially photosrelating CL Scale Bill Boss 77-06 269th Street New Hyde Park NY 11040 CL Aerobatics/Fancher Continued page 72 Japanese tissue finished two thin coats nitrate dope fuel proofer red airplane Forster 29 power weighed 24 oz yellow model McCoy 19 drop-off landing gear its flying weight mere 19 oz George Aldrich saw models Dallas Nationals year shared motel room says got some ideas No bler Super Chiefs ably alrfoil-shaped vertical tail no rudder offset After Nationals took some time off toured East demonstrating Free Flight GATOR RIC PRODUCTS PLUG-IN ADJUSTABLE STAB KIT last can optimize stab incidence best flight charac teristics pair glass filled nylon adjusters included provide micro screw adjustment smaller front tube Main tube aluminum matching phenolic socket TRANSMITTER CASE An inexpensive rugged molded case protect expensive transmitter both two stick single stick transmitters Srown leather grain aluminum trim locking clasp S 1895 WING TUBE & SOCKETS Aluminum alloy tubing plug-in wings Included pair special slip-fit phenolic sockets build wing structure Now size models 715 dia x 25 895 tdiasiZ5 995 1diax351495 feather Ilte glass cloth 7 oz/sq yd est weave Fastest Filling est Finished Weight Big 3 Sq Yard Pkg Detailed Instructions $895 ENGINE SLEEVE & BEARING PULLER Pull tight sleeves bearings easily Out damage new 6Us 17MM rear bearings Sleeve Puller5 795 Searing Puller5 695 SothForS1395 IVANS MAGIC GADGET protractor device used Ivan Kristensen accurately measure WAUB aileron elevator rudder throw rakes guess work out tool complete instructions Ingtrimming out airplane quality book carrying caseS 795 NEWI WING MOUIrrING SET wing mounting system developed Ron Chidgey fast neat accurate stays tight Three nylon brackets screws machined wood wing blocks included S 595 See Dealer Order Direct Inciude S2 Per Item UPS GATOR RIC PRODUCTS 3713 Pompano Dr acola FL 32514 476-8639 January 1988 171 An new tiger Tail 120 four strokes piped 60 two strokes beautiful performer competition just showing offl balsa kit machined wood parts complete hardware package includes plug-in adjustable stab parts new wing mounts Wing Span -72 inWing Area 860 sq Complete Delus KitS 15995
Edition: Model Aviation - 1988/01
Page Numbers: 71, 162, 168, 171
ELECTRIC electronic control systems CL Scale models have covered some de gree column over past few years couple letters received recently have prompted revisit subject time comments based letters Mike Gretz Monte zuma IA Jeny Blaszczyk Beasalem PA Mikes letter actually copy response Dale Campbell Newton NC Mike outlined history CL electronic systems basics operation Mike thought formation might interest some newer CL Scale modelers letter Jerry about electric relay system uses operating flaps P-68 Victor Italian-made commuter plane First lets cover history basics electronic systems Mike indicated Dale Mike Stott tough CL Scale competitor early Seventies pretty much originator idea using electronics CL 1973 Oshkosh Nats Mike discussed idea passing signals through pair insulated lines Ken Wilson hobby dealer EK Logitrol service man long after both Mike Gretz working systems both flew models equipped new elec tronic systems 1974 World Championships Lakehurst NJ accompanying sketch shows basic de tails Stott system constructed Ken Wilson using EK Logitrol compo nents system composed encoder sec tion standard RC transmitter set insulated lines decoder servos Jerry Blaszczyks Philadelphia PA P-68 Victor Below R has pages before back February 66 time shows us simple way actuates its flaps coupled throttle battery pack DPDT switch control handle send current through insulated control lines pair control relays batteries model turn run servo actuates flaps airborne relay/battery module seen Below L outside model Jerry also makes use balance planel System inexpensive RC receiver six-function control box contains six trim-type slide controls encoder its power supply As slide control moved signal gener ated encoder passed through sulated lines decoder plane interprets signal operates appropriate servo Please note signal generated electrical-impulse type radio frequency RE signal no radio transmitter re ceiver involved must also remember Control Line competition rules Control Line General paragraph 2 strictly prohibit use radio-frequency signals control CL models lines used plastic-coated steel fishing leader cable measuring 030-in thickness 043 overall plastic covering labeled 120-lb test two-line system chosen cause functions including throttle control performed control box Elevator control kept mechanical function using standard bellcrank system Following successful use new system 74 World Championships Stott ar rangement Ken Wilson manufacture systems due relatively small number CL Scale modelers US sales brisk fact appears three units sold Bill Harney Ed Rhoads Dan Osdoba interesting note Scale modelers very slow making use new revolutionary system several foreign countries adopted system hesitation 1976 World Championships Scale modelers England France Russia Continued page 162 NYLON NY LL C R C ON 0 0 RANYL 1A 000005 PLAGDN CONNECTORS 6 FONCYDYN CANYROL ORCODER ANITRAYRITA ENCODER ANDNICAD BATTERIES 550 MA NICAD NATOERY PACK MIKE OTOTTN EEECTRONOC CONTROL SYSTEM Developed Ken WSOson 0973 January 1988 71 Control Line Scale Bill Boss MODEL ~1 INSULATED LINES_ Mike Stott sparked development full-house electronic control system CL models shown sketch 1 back 73 1974 Aerolympics Lakehurst NJ Mike Gretz used sytem modelsthe first time US Mike Gretzs Zlin R seen about take off meet Sorry dont know helper European modelers quick adopt sytem drawing Use Titebond cement prevent warps later Matching assembly simple front view wing post drawn board will ensure post installed correctly dihedral both sides After rear post completely dry wing should attached fuselage rear post bottom tube front post cemented front spar making certain 1 wing 900 motor stick top view 2 right wing has aboauat l/ incidence left Titebond dries ship should ready fly Dont surprised little overweight Quite bit material will removed mo tor stick during flight testing Flying Install prop rubber mo tor made according schedule drawing Put enough winds motor achieve level flight Adjust incidence required get smooth level flight left wing sags down ship resists turning increase left wing incidence about %2 readjusting glue joint front wing post Titebond can softened water joint reglued necessary left circle 30 ft diameter desired use left rudder little left tail tilt left side high viewed rear may added twisting tail boom necessary point youll able put about 1000 turns motor before crabbing stalling begins assert itself Crabbing stalling caused insufficient left wing lift offset increasing motor torque left wing sags down moves ahead left slip opens up left circle flopping ungraceful stall occurs re covery process repeats itself until torque drops down sustainable level point fliers crank left rudder go lower-pitch prop both Dont either Note wing twist governed torsional strength motor stick tween wing posts stick too strong torsionally between posts will re sist twisting bring crabbing/stalling carefully sanding stick between wing posts toward elliptical shape can gradually increase full power wing twist eventually eliminate crabbing stalling After sanding will note ship will accept little torque until finally will take full winds go up like Mulvihill model Also note motor stick too weak start will worthless also find useful sand little front rear stick shown drawing extra downthrust bend tail bend will help keep flying speed up thus minimizing need wing twist fully wound tail will usually tilted wrong direction right side slightly high causes somewhat larg er full-power circle must offset downthrust bend stick bend tail bend stall avoided Eventually some additional left stab tilt may turn out solution Another feature enables Seren dipity offset torque left wing flare steep full-power climb center lift much closer leading edge wing characteristic causes left leading edge bend upward causing flare helps left wing balance torque amount flare depends strength taper left front spar sharp taper causes flare appear out near tip good less tapered spar weaker near wing center will flare evenly over half-span wing will add considerable torque control causing right wing have negative angle attack flaring charac teristics models wing built spar dimensions Keep mind ever additional left wing flare can obtained reducing spar depth near left front wing post successive light sand ings sanding paddle curved block Rubber motor have using old Pirel li Wakefield motors strip down rotary rubber cutter Check around among Free Flight friends see can find some youll have use American-made rubber sold today Indoor suppliers Under low ceilings Easy Bs flown US-made rubber should useful because its flatter torque curve Lowceiling motors should shorter quite lot wider usual high-ceiling motor Level flight should almost achieved last full row knots Such motor should backed off 30 40% until model barely climbs Keep mind completed Easy B really finished After flying anything right can corrected soften ing glue joints water solvent re moving offending part replacing something better Fly model until get best performance out can build better model keeping mind structural integrity aerody namic harmony bit important low weight Finally real high-ceiling secret design its ability climb 180 ft full burst long thin motor spin off nearly winds slow open letdown Under Category II III ceilings has ability fly prop running 85 rpm very low rubber weight Suppliers Sig Manufacturing Co tnc Montezuma IA 50171 Ray Harlan 15 Happy Hollow Rd wayland MA 01778 Micro-X-Products PO Box 1063 Lorain OH 44055 Indoor Model supply Box C Garberville CA 95440 Jim Jones 36631 Ledgestone Dr Mt Clemens MI 48043 Franklin Chemical Industries Columbus OH 43207 CL Scale/Boss Continued page 71 operated nine-volt battery supply course set insulated flying lines re quired Instead using plastic-covered steel fish ing leader material insulated lines Jerry coated standard set flying lines butyrate dope says has used couple years problems White Jerry may have successful insu lating lines manner described believe use fishing leader material safer long run standpoint preventing electric shorts Jerry also noted two bat teries relays mounted fuselage seen photo serve balancing weight model Operation system rather simple required push switch hanContinued page 168 162 Model Aviation WACO UPF-7 I/ SCALE 72 1204COR LARGER SEND $200 FOR COMPLETE CATALOG OF FINE KITS IKON NWST PO Box 566 Auburn WA 98071 2069418248 incorporated system models wasnt until early Eighties CL Scale modelers country really got inter ested use new idea 1983 Clancy Arnold flew P-38 equipped electronic control system featured October 1984 column column gives fairly good de scription basic systems works various types input control can employed Thats reason did spend time months column working details Charles Bauer has also user pro moter electronic system has used several models since about 1984 understanding both Clancy unaries trying market systems would too glad send information interested parties Youll find addresses end item Another approach electronic control sys tem used Jeff Perez flying Piper Co manche during recent FAI team trials Lincoln NE Jeff used Circus Hobbies JR radio direct-servo-coupling feature fea ture permits make direct connection via plug-and-cord arrangement between transmit ter receiver test operation RC models servos radio frequency trans mission Perez took advantage feature substi tuting insulated lines test patch cord sup plied radio system Jeff just strapped transmitter box belt sure could accused using radio signals removed frequency module transmitter know Circus Hobbies still advertis es JR radio systems am sure servo test feature still employed type ar rangement interests would good idea check Circus Hobbies first addition modelers mentioned above Mike Gretz also indicated Dick Byron Aus tralia Graves Steve Ashby soon will using electronic systems planes appears finally have some acceptance system permits CL flier incorpor ate operating features modeland al lows him less complicated manner through use servos rather via myr iad pushrods mechanical devices Perhaps things has previously kept CL modeler using type system cost depending number servos used can somewhere between $200 $300 Anyone desiring information Clancy Ar nold Charles Bauer should write di rectly following addresses Clancy Arnold 7536-C Ivywood Drive Indianapolis IN 46250 Charles Bauer 4944 No Orange Norridge IL 60656 flap control used Jerry Blaszczyk Phila delphia PA Italian P-63 Victor may sophisticated electronic system de scribed above operational fea ture desired type system might appropriate accompanying sketch shows wiring Jerrys electrically operated flap servo sys tem consists battery supply doublepole double-throw DPDT momentary switch mounted small chassis box measuring ap proximately 24 x 2 x 1% can either attached control handle strapped belt alrcraft two mini-type single-pole double-throw SPDT relays electric servo battery supply components avail able local Radio Shack store follows four nine-volt battery snap connectors Part No 270-325 DPDT momentary switch chassis box Part No 270-235 two mini-size SPDT relays Part No 275-004 RC servo choice should type can dle direction other have flaps move up down Releasing switch handle automatically allows switch move its Off position thereby stopping servo operation Also note method flap operation rather simple inexpensive method about $20 relays batteries connectors control box meeting new 1988 competition rule states flap operation receive maximum points must independent throttle control would like thank both Mike Gretz Jerry Blaszczyk input months column DIRECTORY OF CL SCALE ITEMS 1987 issues Model Aviation January Comments 1988-89 rules change proposals author Contest report GSCB 10th An nual Scale rally Directory 1986 CL Scale col umn items February Multi-engine starting switch box Art Snowden Club ReportCholla Choppers Tucson AZ Hobbypoxy paint formulas 34102 Light Green FS 34902 Dark Green FS 36081 Dark Gray FS 37038 Black 168 Model Aviation CL Scale/Boss Continued page 162 j Statement Ownership Management Circulation Aecjuired 39 USC 3685 lA Title Publication Model Aviation 1 B Publication No 087930 2 Date Filing September 21 1987 3 Frequency iaaue Monthly A No isauea published annually 12 B Annual subscription price $1800 4 Complete Mailing Addreaa Known Office Pub lication atreet city county atate ZIP code printera 1810 Samuel Morae Dr Reston VA 22090 5 Complete mailing address headquarters general buaineas officea publisher printer 1810 Samuel Morae Dr Reston VA 22090 6 Full namea complete mailing addreaa publisher editor managing editor thia item must left blank Publiaher Carl Wheeley 1810 Samuel Morse Dr Reston VA 22090 Editor Carl Wheeley 1810 Samuel Morae Dr Reaton VA 22090 Managing editor None 7 Owner Academy Model Aeronautica Inc 1810 Samuel Morae Dr Reston VA 22090 8 Known bondholders mortgagees other ae curity holders owning holding 1 percent total amount bonda mortgages oth er aecuritlee None 9 For completion nonprofit organizations author ized mail apecial rates Section 42312 DMM purpoae function nonprofit atatua thia organization exempt atatua Fed eral income tax purposes 1 Haa changed during preceding 12 montha Extent Nature Circulation 10 Actual AverageNo copNo cop-lea lea aingle issue dur- aue pub ing pre- liahed ceding 12 neareat montha filing date ATotal No Copies Net Preaa Run96938105900 BPaid and/or Requested Circulation 1 Salea through dealera carriera atreet vendora counter aales34663696 2 Mail Subacriptions9049799491 CTotal Paid end/or Re quested Circulation Sum lOBi 10B293963103187 DFree Distribution Mail Carrier Other Means Samples Complimentary Other Free Copies21622161 ETotal Distribution Sum C D96125105348 FCopies Distributed 1 Office use left over unaccounted spoiled after printing609544 2Returns News Agents2048 GTotal Sum E Fl 2should equal net press run shown A96938105900 11 certify statements made cor rect complete Carl Wheeley Editor Publisher MarchMaking dummy radial engine dressing up windshields Richard Schneider Use wooden burnishing tools using duct tape Comments FAI team selection trials East Coast modelers AprilBasic rules better performance Scale contests Bob Emmett NASA Newsletter NASAsponsored meet program MayDreamerflight controller rocker arm type Doug Dahlke Use intermediate bellcranks author DocumentationScale Model Re search Club ReportDallas Model Aircraft Association JuneCommcnts CL Scale George Gaydos Scale Documentation source Repla-Tech International JulyReport WRAM Show Scale color Dark Gray informa tion Cam Martin Hobbypoxy color formulas Pale Green Sand Tan Light Gray August Spoke wheelsmake own Bob Furr Scale Documentationbook Great Aircraft Collections World return Profile Publica tions SeptemberScale rules discussion author subject towing gliders banners etc New sanding tools Grate Shapes Bell Rock Industries OctoberP-38 working canopy side win dows George Gaydos Hint workshop Bob FurrUse plastic model instead three-views model documen tatton G-S profile kit survey Cam Martin November1987 Nationals report Mike Pratt DecemberUse overhead projector application panel lines rivet patterns model Charles Bauer Attention control system details makes better operation longer model life John Hall Please send correspondenceand espe cially photosrelating CL Scale Bill Boss 77-06 269th Street New Hyde Park NY 11040 CL Aerobatics/Fancher Continued page 72 Japanese tissue finished two thin coats nitrate dope fuel proofer red airplane Forster 29 power weighed 24 oz yellow model McCoy 19 drop-off landing gear its flying weight mere 19 oz George Aldrich saw models Dallas Nationals year shared motel room says got some ideas No bler Super Chiefs ably alrfoil-shaped vertical tail no rudder offset After Nationals took some time off toured East demonstrating Free Flight GATOR RIC PRODUCTS PLUG-IN ADJUSTABLE STAB KIT last can optimize stab incidence best flight charac teristics pair glass filled nylon adjusters included provide micro screw adjustment smaller front tube Main tube aluminum matching phenolic socket TRANSMITTER CASE An inexpensive rugged molded case protect expensive transmitter both two stick single stick transmitters Srown leather grain aluminum trim locking clasp S 1895 WING TUBE & SOCKETS Aluminum alloy tubing plug-in wings Included pair special slip-fit phenolic sockets build wing structure Now size models 715 dia x 25 895 tdiasiZ5 995 1diax351495 feather Ilte glass cloth 7 oz/sq yd est weave Fastest Filling est Finished Weight Big 3 Sq Yard Pkg Detailed Instructions $895 ENGINE SLEEVE & BEARING PULLER Pull tight sleeves bearings easily Out damage new 6Us 17MM rear bearings Sleeve Puller5 795 Searing Puller5 695 SothForS1395 IVANS MAGIC GADGET protractor device used Ivan Kristensen accurately measure WAUB aileron elevator rudder throw rakes guess work out tool complete instructions Ingtrimming out airplane quality book carrying caseS 795 NEWI WING MOUIrrING SET wing mounting system developed Ron Chidgey fast neat accurate stays tight Three nylon brackets screws machined wood wing blocks included S 595 See Dealer Order Direct Inciude S2 Per Item UPS GATOR RIC PRODUCTS 3713 Pompano Dr acola FL 32514 476-8639 January 1988 171 An new tiger Tail 120 four strokes piped 60 two strokes beautiful performer competition just showing offl balsa kit machined wood parts complete hardware package includes plug-in adjustable stab parts new wing mounts Wing Span -72 inWing Area 860 sq Complete Delus KitS 15995
Edition: Model Aviation - 1988/01
Page Numbers: 71, 162, 168, 171
ELECTRIC electronic control systems CL Scale models have covered some de gree column over past few years couple letters received recently have prompted revisit subject time comments based letters Mike Gretz Monte zuma IA Jeny Blaszczyk Beasalem PA Mikes letter actually copy response Dale Campbell Newton NC Mike outlined history CL electronic systems basics operation Mike thought formation might interest some newer CL Scale modelers letter Jerry about electric relay system uses operating flaps P-68 Victor Italian-made commuter plane First lets cover history basics electronic systems Mike indicated Dale Mike Stott tough CL Scale competitor early Seventies pretty much originator idea using electronics CL 1973 Oshkosh Nats Mike discussed idea passing signals through pair insulated lines Ken Wilson hobby dealer EK Logitrol service man long after both Mike Gretz working systems both flew models equipped new elec tronic systems 1974 World Championships Lakehurst NJ accompanying sketch shows basic de tails Stott system constructed Ken Wilson using EK Logitrol compo nents system composed encoder sec tion standard RC transmitter set insulated lines decoder servos Jerry Blaszczyks Philadelphia PA P-68 Victor Below R has pages before back February 66 time shows us simple way actuates its flaps coupled throttle battery pack DPDT switch control handle send current through insulated control lines pair control relays batteries model turn run servo actuates flaps airborne relay/battery module seen Below L outside model Jerry also makes use balance planel System inexpensive RC receiver six-function control box contains six trim-type slide controls encoder its power supply As slide control moved signal gener ated encoder passed through sulated lines decoder plane interprets signal operates appropriate servo Please note signal generated electrical-impulse type radio frequency RE signal no radio transmitter re ceiver involved must also remember Control Line competition rules Control Line General paragraph 2 strictly prohibit use radio-frequency signals control CL models lines used plastic-coated steel fishing leader cable measuring 030-in thickness 043 overall plastic covering labeled 120-lb test two-line system chosen cause functions including throttle control performed control box Elevator control kept mechanical function using standard bellcrank system Following successful use new system 74 World Championships Stott ar rangement Ken Wilson manufacture systems due relatively small number CL Scale modelers US sales brisk fact appears three units sold Bill Harney Ed Rhoads Dan Osdoba interesting note Scale modelers very slow making use new revolutionary system several foreign countries adopted system hesitation 1976 World Championships Scale modelers England France Russia Continued page 162 NYLON NY LL C R C ON 0 0 RANYL 1A 000005 PLAGDN CONNECTORS 6 FONCYDYN CANYROL ORCODER ANITRAYRITA ENCODER ANDNICAD BATTERIES 550 MA NICAD NATOERY PACK MIKE OTOTTN EEECTRONOC CONTROL SYSTEM Developed Ken WSOson 0973 January 1988 71 Control Line Scale Bill Boss MODEL ~1 INSULATED LINES_ Mike Stott sparked development full-house electronic control system CL models shown sketch 1 back 73 1974 Aerolympics Lakehurst NJ Mike Gretz used sytem modelsthe first time US Mike Gretzs Zlin R seen about take off meet Sorry dont know helper European modelers quick adopt sytem drawing Use Titebond cement prevent warps later Matching assembly simple front view wing post drawn board will ensure post installed correctly dihedral both sides After rear post completely dry wing should attached fuselage rear post bottom tube front post cemented front spar making certain 1 wing 900 motor stick top view 2 right wing has aboauat l/ incidence left Titebond dries ship should ready fly Dont surprised little overweight Quite bit material will removed mo tor stick during flight testing Flying Install prop rubber mo tor made according schedule drawing Put enough winds motor achieve level flight Adjust incidence required get smooth level flight left wing sags down ship resists turning increase left wing incidence about %2 readjusting glue joint front wing post Titebond can softened water joint reglued necessary left circle 30 ft diameter desired use left rudder little left tail tilt left side high viewed rear may added twisting tail boom necessary point youll able put about 1000 turns motor before crabbing stalling begins assert itself Crabbing stalling caused insufficient left wing lift offset increasing motor torque left wing sags down moves ahead left slip opens up left circle flopping ungraceful stall occurs re covery process repeats itself until torque drops down sustainable level point fliers crank left rudder go lower-pitch prop both Dont either Note wing twist governed torsional strength motor stick tween wing posts stick too strong torsionally between posts will re sist twisting bring crabbing/stalling carefully sanding stick between wing posts toward elliptical shape can gradually increase full power wing twist eventually eliminate crabbing stalling After sanding will note ship will accept little torque until finally will take full winds go up like Mulvihill model Also note motor stick too weak start will worthless also find useful sand little front rear stick shown drawing extra downthrust bend tail bend will help keep flying speed up thus minimizing need wing twist fully wound tail will usually tilted wrong direction right side slightly high causes somewhat larg er full-power circle must offset downthrust bend stick bend tail bend stall avoided Eventually some additional left stab tilt may turn out solution Another feature enables Seren dipity offset torque left wing flare steep full-power climb center lift much closer leading edge wing characteristic causes left leading edge bend upward causing flare helps left wing balance torque amount flare depends strength taper left front spar sharp taper causes flare appear out near tip good less tapered spar weaker near wing center will flare evenly over half-span wing will add considerable torque control causing right wing have negative angle attack flaring charac teristics models wing built spar dimensions Keep mind ever additional left wing flare can obtained reducing spar depth near left front wing post successive light sand ings sanding paddle curved block Rubber motor have using old Pirel li Wakefield motors strip down rotary rubber cutter Check around among Free Flight friends see can find some youll have use American-made rubber sold today Indoor suppliers Under low ceilings Easy Bs flown US-made rubber should useful because its flatter torque curve Lowceiling motors should shorter quite lot wider usual high-ceiling motor Level flight should almost achieved last full row knots Such motor should backed off 30 40% until model barely climbs Keep mind completed Easy B really finished After flying anything right can corrected soften ing glue joints water solvent re moving offending part replacing something better Fly model until get best performance out can build better model keeping mind structural integrity aerody namic harmony bit important low weight Finally real high-ceiling secret design its ability climb 180 ft full burst long thin motor spin off nearly winds slow open letdown Under Category II III ceilings has ability fly prop running 85 rpm very low rubber weight Suppliers Sig Manufacturing Co tnc Montezuma IA 50171 Ray Harlan 15 Happy Hollow Rd wayland MA 01778 Micro-X-Products PO Box 1063 Lorain OH 44055 Indoor Model supply Box C Garberville CA 95440 Jim Jones 36631 Ledgestone Dr Mt Clemens MI 48043 Franklin Chemical Industries Columbus OH 43207 CL Scale/Boss Continued page 71 operated nine-volt battery supply course set insulated flying lines re quired Instead using plastic-covered steel fish ing leader material insulated lines Jerry coated standard set flying lines butyrate dope says has used couple years problems White Jerry may have successful insu lating lines manner described believe use fishing leader material safer long run standpoint preventing electric shorts Jerry also noted two bat teries relays mounted fuselage seen photo serve balancing weight model Operation system rather simple required push switch hanContinued page 168 162 Model Aviation WACO UPF-7 I/ SCALE 72 1204COR LARGER SEND $200 FOR COMPLETE CATALOG OF FINE KITS IKON NWST PO Box 566 Auburn WA 98071 2069418248 incorporated system models wasnt until early Eighties CL Scale modelers country really got inter ested use new idea 1983 Clancy Arnold flew P-38 equipped electronic control system featured October 1984 column column gives fairly good de scription basic systems works various types input control can employed Thats reason did spend time months column working details Charles Bauer has also user pro moter electronic system has used several models since about 1984 understanding both Clancy unaries trying market systems would too glad send information interested parties Youll find addresses end item Another approach electronic control sys tem used Jeff Perez flying Piper Co manche during recent FAI team trials Lincoln NE Jeff used Circus Hobbies JR radio direct-servo-coupling feature fea ture permits make direct connection via plug-and-cord arrangement between transmit ter receiver test operation RC models servos radio frequency trans mission Perez took advantage feature substi tuting insulated lines test patch cord sup plied radio system Jeff just strapped transmitter box belt sure could accused using radio signals removed frequency module transmitter know Circus Hobbies still advertis es JR radio systems am sure servo test feature still employed type ar rangement interests would good idea check Circus Hobbies first addition modelers mentioned above Mike Gretz also indicated Dick Byron Aus tralia Graves Steve Ashby soon will using electronic systems planes appears finally have some acceptance system permits CL flier incorpor ate operating features modeland al lows him less complicated manner through use servos rather via myr iad pushrods mechanical devices Perhaps things has previously kept CL modeler using type system cost depending number servos used can somewhere between $200 $300 Anyone desiring information Clancy Ar nold Charles Bauer should write di rectly following addresses Clancy Arnold 7536-C Ivywood Drive Indianapolis IN 46250 Charles Bauer 4944 No Orange Norridge IL 60656 flap control used Jerry Blaszczyk Phila delphia PA Italian P-63 Victor may sophisticated electronic system de scribed above operational fea ture desired type system might appropriate accompanying sketch shows wiring Jerrys electrically operated flap servo sys tem consists battery supply doublepole double-throw DPDT momentary switch mounted small chassis box measuring ap proximately 24 x 2 x 1% can either attached control handle strapped belt alrcraft two mini-type single-pole double-throw SPDT relays electric servo battery supply components avail able local Radio Shack store follows four nine-volt battery snap connectors Part No 270-325 DPDT momentary switch chassis box Part No 270-235 two mini-size SPDT relays Part No 275-004 RC servo choice should type can dle direction other have flaps move up down Releasing switch handle automatically allows switch move its Off position thereby stopping servo operation Also note method flap operation rather simple inexpensive method about $20 relays batteries connectors control box meeting new 1988 competition rule states flap operation receive maximum points must independent throttle control would like thank both Mike Gretz Jerry Blaszczyk input months column DIRECTORY OF CL SCALE ITEMS 1987 issues Model Aviation January Comments 1988-89 rules change proposals author Contest report GSCB 10th An nual Scale rally Directory 1986 CL Scale col umn items February Multi-engine starting switch box Art Snowden Club ReportCholla Choppers Tucson AZ Hobbypoxy paint formulas 34102 Light Green FS 34902 Dark Green FS 36081 Dark Gray FS 37038 Black 168 Model Aviation CL Scale/Boss Continued page 162 j Statement Ownership Management Circulation Aecjuired 39 USC 3685 lA Title Publication Model Aviation 1 B Publication No 087930 2 Date Filing September 21 1987 3 Frequency iaaue Monthly A No isauea published annually 12 B Annual subscription price $1800 4 Complete Mailing Addreaa Known Office Pub lication atreet city county atate ZIP code printera 1810 Samuel Morae Dr Reston VA 22090 5 Complete mailing address headquarters general buaineas officea publisher printer 1810 Samuel Morae Dr Reston VA 22090 6 Full namea complete mailing addreaa publisher editor managing editor thia item must left blank Publiaher Carl Wheeley 1810 Samuel Morse Dr Reston VA 22090 Editor Carl Wheeley 1810 Samuel Morae Dr Reaton VA 22090 Managing editor None 7 Owner Academy Model Aeronautica Inc 1810 Samuel Morae Dr Reston VA 22090 8 Known bondholders mortgagees other ae curity holders owning holding 1 percent total amount bonda mortgages oth er aecuritlee None 9 For completion nonprofit organizations author ized mail apecial rates Section 42312 DMM purpoae function nonprofit atatua thia organization exempt atatua Fed eral income tax purposes 1 Haa changed during preceding 12 montha Extent Nature Circulation 10 Actual AverageNo copNo cop-lea lea aingle issue dur- aue pub ing pre- liahed ceding 12 neareat montha filing date ATotal No Copies Net Preaa Run96938105900 BPaid and/or Requested Circulation 1 Salea through dealera carriera atreet vendora counter aales34663696 2 Mail Subacriptions9049799491 CTotal Paid end/or Re quested Circulation Sum lOBi 10B293963103187 DFree Distribution Mail Carrier Other Means Samples Complimentary Other Free Copies21622161 ETotal Distribution Sum C D96125105348 FCopies Distributed 1 Office use left over unaccounted spoiled after printing609544 2Returns News Agents2048 GTotal Sum E Fl 2should equal net press run shown A96938105900 11 certify statements made cor rect complete Carl Wheeley Editor Publisher MarchMaking dummy radial engine dressing up windshields Richard Schneider Use wooden burnishing tools using duct tape Comments FAI team selection trials East Coast modelers AprilBasic rules better performance Scale contests Bob Emmett NASA Newsletter NASAsponsored meet program MayDreamerflight controller rocker arm type Doug Dahlke Use intermediate bellcranks author DocumentationScale Model Re search Club ReportDallas Model Aircraft Association JuneCommcnts CL Scale George Gaydos Scale Documentation source Repla-Tech International JulyReport WRAM Show Scale color Dark Gray informa tion Cam Martin Hobbypoxy color formulas Pale Green Sand Tan Light Gray August Spoke wheelsmake own Bob Furr Scale Documentationbook Great Aircraft Collections World return Profile Publica tions SeptemberScale rules discussion author subject towing gliders banners etc New sanding tools Grate Shapes Bell Rock Industries OctoberP-38 working canopy side win dows George Gaydos Hint workshop Bob FurrUse plastic model instead three-views model documen tatton G-S profile kit survey Cam Martin November1987 Nationals report Mike Pratt DecemberUse overhead projector application panel lines rivet patterns model Charles Bauer Attention control system details makes better operation longer model life John Hall Please send correspondenceand espe cially photosrelating CL Scale Bill Boss 77-06 269th Street New Hyde Park NY 11040 CL Aerobatics/Fancher Continued page 72 Japanese tissue finished two thin coats nitrate dope fuel proofer red airplane Forster 29 power weighed 24 oz yellow model McCoy 19 drop-off landing gear its flying weight mere 19 oz George Aldrich saw models Dallas Nationals year shared motel room says got some ideas No bler Super Chiefs ably alrfoil-shaped vertical tail no rudder offset After Nationals took some time off toured East demonstrating Free Flight GATOR RIC PRODUCTS PLUG-IN ADJUSTABLE STAB KIT last can optimize stab incidence best flight charac teristics pair glass filled nylon adjusters included provide micro screw adjustment smaller front tube Main tube aluminum matching phenolic socket TRANSMITTER CASE An inexpensive rugged molded case protect expensive transmitter both two stick single stick transmitters Srown leather grain aluminum trim locking clasp S 1895 WING TUBE & SOCKETS Aluminum alloy tubing plug-in wings Included pair special slip-fit phenolic sockets build wing structure Now size models 715 dia x 25 895 tdiasiZ5 995 1diax351495 feather Ilte glass cloth 7 oz/sq yd est weave Fastest Filling est Finished Weight Big 3 Sq Yard Pkg Detailed Instructions $895 ENGINE SLEEVE & BEARING PULLER Pull tight sleeves bearings easily Out damage new 6Us 17MM rear bearings Sleeve Puller5 795 Searing Puller5 695 SothForS1395 IVANS MAGIC GADGET protractor device used Ivan Kristensen accurately measure WAUB aileron elevator rudder throw rakes guess work out tool complete instructions Ingtrimming out airplane quality book carrying caseS 795 NEWI WING MOUIrrING SET wing mounting system developed Ron Chidgey fast neat accurate stays tight Three nylon brackets screws machined wood wing blocks included S 595 See Dealer Order Direct Inciude S2 Per Item UPS GATOR RIC PRODUCTS 3713 Pompano Dr acola FL 32514 476-8639 January 1988 171 An new tiger Tail 120 four strokes piped 60 two strokes beautiful performer competition just showing offl balsa kit machined wood parts complete hardware package includes plug-in adjustable stab parts new wing mounts Wing Span -72 inWing Area 860 sq Complete Delus KitS 15995
