Radio Control Electrics Bob Kopski ELECTRIC EVENTS now planned include following International Electric Fun Fly June 22-23 1985 Ontario Canada Site about 55 miles Niagara Falls Con tact Vic Walpole 102 Admiral Road Ajax Ontario LiS 2P1 Canada Also contact Vic want join Electric association An opening symposium Electric propulsion planning stages Third Annual Boeing Hawks Electric Fly-Ia Saturday June 29 1985 Kent WA Contact Bernard Cawley 210 37th St SE No 43 Auburn WA 98002 Prizes longest flight acrobatic smallest airplane others An Electric Clinic conducted Mitch Poling ten tatively scheduled South Shore RC Club Inc sponsors Electric meet Sunday July 21 1985 Contact Charles Sylvia PO Box 775 Middleboro MA 01246 Houston TX August/September 1985 time frame Electric meet hosted SPARKS Contact Ken Martin 13106 Newbrook Houston TX 77072 call 713 933-1688 Sixth Annual KRC Electric Fly Sep tember 21-22 1985 Hatfield PA information write KRC Electric Fly 140 Hopewell Ln Teldford PA 18960 Once again encourage small groups Electric fliers organize Electric get-together local area doesnt have anything formal fancyjust call Come Fly Us send copy flyer Ill best get columnif get time takes about three months get item print after receive Send info Electric columnists other model magazines too Theyre good guys will Im sure happy assist promoting Electric activity Electric publications supplies Con gratulations Mitch Poling publication Kaimbach new book Building Flying ElectricPowered Model Aircraft Kaimbach PMb lishing Co 11027 North Seventh St Milwaukee WI 53223$995 plus $1 postage book also available hobby shops 76 pages filled photos text covers essential ly everything need know build fly enjoy Electric Its recommended newcomer old pro alike Nice job Mitch similar vein man brings Ampere Flyer month D 3AMP 50V RECTIFIER C 220jiF 35V ELECTROLYTIC SEE TEXT 1 -F IL OUTPUT LEAD FROM SOLDER LUG STRIP ASSY 6REEN LEADTO12 VOLT POWER INPUT IN SWITCH BOX ~~1 -LINE FUSE BLACK LEAD TO -1-12 V POWER UINPUT IN SWITCH BOX K RED 24 V OUTPUT LEAD -DOTTED WIRING IS NEW ADDED CIRCUITRY -SOLID WIRING IS NORMAL VOLTAGE INVERTER SCHEMATIC OF MODIFIED VOLTAGE INVERTER Bob has modification HavyDuty Charging System described last month can now charge battery packs up 20 ceils schematic wiring diagram above shows Radio Shack Voltage inverter must modified build new charger sketch beiow shows wire new DPDT switches switch box MUST things right 16 GUAGE LAMP jJ\WI RENUT CORD PAIR I2 VOLT INPUTNii CLIP ________________________ BLACK LEAD TO VOLTAGE INVERTER ______________________________NEW VOLTAGE INVERTER NOTE VERIFY SWITCH HANDLEOUTPUT WIRE POSITIONS BEFORE LABELING SWITCHES RADIO SHACK NO 275-636 I2 24/36 SWITCHIOR SIMILAR TO STOR BANK IFINE STEPS TO STOR BANK ICOARSE STEPS BOTTOM VIEW OF DOUBLE POLE DOUBLE THROW SWITCHES24/36 SWITCH RED VOLTAGE CLIPINVERTER WIRE _______________________ GREEN VOLTAGE INVERTER WIRE 1112 VOLT INPUT IFROMAUTO BATTERY C 16 GUAGE LAMP CORD PAIR 4 WIRENUT MODIFIED CHARGE SYSTEM Belgiums Peter Blommaart has gathered up fine articles magazine offers Compen dium available $17 postpaid Peter Blommaart Ampere Flyer PO Box 23 B-6200 Gosselies Belgium No serious Electric flier should copy way annual subscription monthly Ampere Flyer goes $25 Among other things Ampere Flyers product supply service includes very nice Unger motors Peter accepts various credit cards write tell him saw MA Former World Champion RC Soaring pilot Dwight Holley has taken up Electric enthused plans get business supplying Electric mer chandise Hes process research ing availability items worldwide intends carry good complete line attractive prices can write Holleys Silent Flight 151 Chestnut Ridge Bethel CT 06801 Video dont know videotapes Electric flying person 1984 KRC Electric Fly video camera recorder might have good tapeif knew per son reading column please drop line Maybe can arrange sharing 52 Model Aviation tape youre able interested Just thinkyou may have first-ever Electric Video possession Thank have sent let tersand especially pictures Most photos get quite good easy candidates inclusion column Unfortunately just have able use ones have received because how-to photos nor mally try publish month Right now have quite backlog both pho tos topics however appreciate inputs will use whatever can space allows Please continue write send photos might tell Editor much love column tell him need space issue Motor versus Radio Heres tip comes some hard experience routine some radios glitch upon turn-on airborne system and/or transmitter well However have servo-activated On-Off motor switch take heed model does have landing gear permitting prop clear ance bench ground pick plane up before turning radio Should happen motor control servo would momentarily twitch hit switch prop free spin Otherwise momentarily-stalled motor can take out system fuse hap pened switch Switch installa tions normally field-serviceable little care can prevent trip back home question comes up now concerns radio range Electrics ground check Electric would ordi narily produce good ol familiar range customary particular radio system antenna orientation until motor started its possible have kinds glitching Continued page 144 Look familiar clue fact HeavyDuty Charger L has modified since presented last month change switch box upper right corner cioseup switch box R shows now has two DPDT switches instead single household 3way wali switch Theyre used select outputs 12 24 36 voits inside Radio Shack Voitage inverter L new component must wire instali Youll have little bit soldering Study photo wiring schematic opposite page see new components connected closeup R new component reveais Its simplicity termInal strip couple diodes electrolytic capacItor coupie hunks wire terminsi strip boited top inverters toroidai coli iocation solely convenience RC Electrics/Kopski Continued page 53 control might impaired motor cant turned off Moving transmitter closer helps restore control What have case motor electrical noise affecting radio both introducing undesired signals same time reducing ability receiver recognize decode trans mitter signal noticeable dur ing range check course because thats exactly find weakest signal can think being similar listening AM radio during electrical stormor perhaps someone using power tool nearby weaker stations hard est hear must settle strong er stations As guideline suggest ground check range reduction up l0%/15% acceptable motor conditions Normally present-day radio performance extremely good such range impairment likely problem situations severe suggest take close look installation Several things can cause unnecessarily high levels radio static include untidy wiring installations perhaps receiver antenna lead dress brings betwixt between motor system wiring Also worn damaged motor brushes commutators can result excessive sparking Another common problem occurs electronic speed controls used Some receivers simply will tolerate being connected motor power system wir ing would case speed con trols optically coupled Most often has nothing speed control per se rather receiver behavior such environment can test temporarily removing speed control operating motor manual switch receiver displays essentially normal range way much hope same speed-control installation can made work would have consider anoth er radio perhaps speed control optical coupling subject speed controls popular units use recent Electric Flys Jomar products Joe Utasis SC-l SC-2 controls based design published Model Aviation about two years ago some com petitive designs products marketand coming along includ ing Im told Joe Anyway use modified SC-2 Eureka its modification want bring attention design Jomar controls allow motor come absence sig nal Thus turn radio motor systems having trans mitter signal present motor will come Onand can become quite testy experience course same thing will happen plane flies through sig nal nulls experiences other glitch conditions can have motor running wide open dont want happen visitors plane transmitter went dead during takeoff taxi uncontrolled plane took off full motor instance no way plane fared pretty well Good fortune strikes again situation can easily corrected addition single resistor did SC-2 immediately upon ana lyzing problem discussing Joe well up matter can help regard Think move safety direction charge system modification Last month column presented simple charge system could assembled nearly anyone would charge systems up 14 cells month gonna look simple addition system will extend its operation up wards 16-cell packs can charged easily 18 cells can charged reduced currents very nicely S 0 II1{1 0] 0 Send $100in Cash Check Stamps 32 Page Tabloid size illustrated DISCOUNT Catalog Sent 1st Class Mail COMET OX FLYLINE FOX GOLDBERG GUELLOWS JETCO K&3- PACIrRA PECK POLYMER PERFECir- SIG STERLING SULLIVAN- TP FLITE & OTHERS PENN VALLEY HOllY CENTER 137 1 Kai St LanudaIs 119441 2251 855 22083080 NOWWORRY FREE STARTING POWER New completely automatic maintenance syatem tar wet gelled cells No run-down batteries xplosive gasses generated undercharged inter storage problems No boiled-dry batterieo ttention required-electronically lonercharged maintains foil charge lUST CONNECr ITTHEN FOAGET IT CaRa Prockacts specify 6 12 or24 volti PO Box 221 $3995Canton SD 57013 9e7-0924 0200 5&H 5AEfr information PRODUCTS FOR THE DISCERNING MODELER Complete Line Exhaust Systems dMuffled Tuned Pipes Headers uri Mufflers Expansion Mufflers copter Ball Mufflers ialized Exhaust Systems Unsurpass Wsk.hi, Pjfomance 144 Model Aviation So much br good newsnow bad modification requires solder ing Youll recall last months charge system solderless designed thai way greatest number people could benefit Any way theres no way around soldering version o youre equipped skilled area find friend can help Thres much involved work must done carefully cor rectly Remember dealing big power youll want absolutely sure corrcct quality assembly job three minor modifications re quired make higher-voltage version simple charge system Radio Shack Voltag Booster fine product makes whole thing work must modified addition two rectifier diodes capacitor extra leadout wire goes warranty shown schematically pho tos assembled small terminal strip simple circuit addition allows Voltage Irverter develop total 36 volts output nominal 12 volt auto battery irput trick being able charge 14 cells second area requiring change switch wiring box case simple household wall switch replaced two double-pole double-throw tog gle switches two switches used combination t select 12 24 36 volt options conjunction resistor bank determine charge current As suggested photos switch selects either 12 volt optionor other switch second switch selects between 24 36 volt options unit shown original switch cover plate has replaced new cover made counter-top materi al Aluminum 1-in plywood can used make new toggle-switch mountand put lid junction box same time other change replace original 8 amp in-line fuse Voltage Inverter having higher value Im using 15 amp instead fully loaded new charge system has out put current 10 amps 12 volt sup ply Id feel better about 12 amp fuse readily available modified charging system easy use last months version suggest review column Either version has maximum output current three amps Please dont try stretch high er Also good idea keep systems out direct sunlight possi blethey will run cooler make sure connections auto battery clean tight impor tant version input current higher before suggest using 12-volt position charge up six cells 24-volt position up 12 cells 36-volt position past 12 cells design will deliver full three amps 16 cells somewhat lower lesscontrolled current 18 cells astute readers may wonder cells cant handled 36 volts because latter configura tion does have good regulation ie 36 volts drops near 30 under load few advisories start car system use use system car running Astro Leisure charger has trickle charge function discussed last month recommend disconnect it36 volts just too much 24 volts pushing Also sure turn current adjustment knob Astro 4005D fully CW until clicks allow charge system output leads come contact auto bodythey can hot respect other Remember normal system run 12 volt source connect edwhether model battery under charge system idling no output current input current very low Voltage Inverter has noticeable whine running perfectly normal wish can add master On-Off switch positive power input line ran new version under stressed conditions bench over two hours continuously no problems course resistor bank gets very hot explained last month Voltage Invert146 Model Aviation Dave Browns ILLUSION WINDY WEATHER FLYER major obstacle consistent 10s paffern flying has always windy weather Dave Brown set out design plane would minimize effect buffety turbulent air result ultra sleek Illusion Refinements include half-hidden pipe easy service yet re duces dragso larger plane flies same speed lower wing loading higher wing location lessens effect turbulence reduced stab anhedral minimizes up down pitching crosswinds higher wing taper ratio improves aileron response Custom kit includes custom made lightweight epoxy fiber glass fuse belly pan Hand picked lightweight balsa sheeting wing stab Dave Brown pushrods OB 80 mount Rocket city aileron links necessary machine cut ed parts Photo illustrated instructions Daves airplane tor reference subtle changes create smooth flying high performance pat tern plane weatherl See dealers today Span 65 Area 750 sq Engine 60 channels 4-5 URSANA LLrNOIS 61S01 217AA7-2O69 er housing also gets hotabout 600 C worth Thats well range properly-designed circuit though uncom fortable hand Military elec tronics often required perform specification temperatures exceeding boiling fact boiling water can used cool some electronic systems point Id like comment earlier Astro 15 25 systems used 16 cells 055 12 Ah capacity respectively perfectly usable systems fact have beltdrive 15 version continuous use six years have worn out three brush sets belt drive Any having systems out service because charging frustrations can now dust off remember large motors discussed two columns ago Use simple charge system charge big battery packs need too recommend following convenient charge currents times packs essentially dead 055 Ah2 amps 15 minutes 08 Ah3 amps 15 minutes 12 Ah3 amps 20 minutes Yet come charging large packs including sophisticated elec tronically-controlled charger no resistor bank demanding skilled readers will based onyou guessed itthe Radio Shack Voltage Inverter Basic Electricity series has back burner temporarily plan resume next month stay us Meanwhile comment question may forwarded author SASE please Happy Electric Landings Bob Kopski 25 West End Dr Lans dale PA 19446 RC Pylon Racing/Hager Continued page 54 ing fast cuts air flow off will find tubing will need completely inside hole order stop air flow Also note no servo strain released flow position fuel tubing pops out hole activated engine running hear quick burp really works hope will give try saves once has paid itself besides make out scrap parts pieces last word Install fifth channel toggle switch Putting sys tem control stick normally used throttle rudder will definitely cause some exciting momentssuch possible engine shutdown after release move rudder stick position mistake shutdown system nownot halfway end servo throw As said before system de signed eliminate problems give try read columns either very interested racing already racing So support group people heartbeat Pylon Racing Join National Minia ture Pylon Racing Association NMPRA Dues $13 per year non-flying members $18 flying members information pay dues write Phil Bussell 4803 Fallon P1 Dallas TX 75227 Want see club get written up column send informa tion about clubs racing about contest Send some black white pic tures too will see what can can use color prints cant write about things dont know exist See next month Bill Hager 706 Glenhaven Dr Conroe TX 77385 Square neres no paiern aesign country tnat sanded pertection instructions can match Tipos long list contest wins hardware packs being improved reason sophisticated design gives Its rare plane can built flown neutral balance kit thats well easily novice t has potential engineered such good instructions win big-time Tipo winner can youre assured having hi performance too See local dealers today planejust like top fliers Great Planes delighted have acquired rights manufacture Tiporare qualily control can assured receiving highest quality fiberglass foam kit available Balsa parts will machine cut and PO BOX 721 URBANA ILLINOIS 61801 217/367-2089 If you want fly success Dont align model guess Lou Roberts
Edition: Model Aviation - 1985/06
Page Numbers: 52, 53, 144, 146, 147
Radio Control Electrics Bob Kopski ELECTRIC EVENTS now planned include following International Electric Fun Fly June 22-23 1985 Ontario Canada Site about 55 miles Niagara Falls Con tact Vic Walpole 102 Admiral Road Ajax Ontario LiS 2P1 Canada Also contact Vic want join Electric association An opening symposium Electric propulsion planning stages Third Annual Boeing Hawks Electric Fly-Ia Saturday June 29 1985 Kent WA Contact Bernard Cawley 210 37th St SE No 43 Auburn WA 98002 Prizes longest flight acrobatic smallest airplane others An Electric Clinic conducted Mitch Poling ten tatively scheduled South Shore RC Club Inc sponsors Electric meet Sunday July 21 1985 Contact Charles Sylvia PO Box 775 Middleboro MA 01246 Houston TX August/September 1985 time frame Electric meet hosted SPARKS Contact Ken Martin 13106 Newbrook Houston TX 77072 call 713 933-1688 Sixth Annual KRC Electric Fly Sep tember 21-22 1985 Hatfield PA information write KRC Electric Fly 140 Hopewell Ln Teldford PA 18960 Once again encourage small groups Electric fliers organize Electric get-together local area doesnt have anything formal fancyjust call Come Fly Us send copy flyer Ill best get columnif get time takes about three months get item print after receive Send info Electric columnists other model magazines too Theyre good guys will Im sure happy assist promoting Electric activity Electric publications supplies Con gratulations Mitch Poling publication Kaimbach new book Building Flying ElectricPowered Model Aircraft Kaimbach PMb lishing Co 11027 North Seventh St Milwaukee WI 53223$995 plus $1 postage book also available hobby shops 76 pages filled photos text covers essential ly everything need know build fly enjoy Electric Its recommended newcomer old pro alike Nice job Mitch similar vein man brings Ampere Flyer month D 3AMP 50V RECTIFIER C 220jiF 35V ELECTROLYTIC SEE TEXT 1 -F IL OUTPUT LEAD FROM SOLDER LUG STRIP ASSY 6REEN LEADTO12 VOLT POWER INPUT IN SWITCH BOX ~~1 -LINE FUSE BLACK LEAD TO -1-12 V POWER UINPUT IN SWITCH BOX K RED 24 V OUTPUT LEAD -DOTTED WIRING IS NEW ADDED CIRCUITRY -SOLID WIRING IS NORMAL VOLTAGE INVERTER SCHEMATIC OF MODIFIED VOLTAGE INVERTER Bob has modification HavyDuty Charging System described last month can now charge battery packs up 20 ceils schematic wiring diagram above shows Radio Shack Voltage inverter must modified build new charger sketch beiow shows wire new DPDT switches switch box MUST things right 16 GUAGE LAMP jJ\WI RENUT CORD PAIR I2 VOLT INPUTNii CLIP ________________________ BLACK LEAD TO VOLTAGE INVERTER ______________________________NEW VOLTAGE INVERTER NOTE VERIFY SWITCH HANDLEOUTPUT WIRE POSITIONS BEFORE LABELING SWITCHES RADIO SHACK NO 275-636 I2 24/36 SWITCHIOR SIMILAR TO STOR BANK IFINE STEPS TO STOR BANK ICOARSE STEPS BOTTOM VIEW OF DOUBLE POLE DOUBLE THROW SWITCHES24/36 SWITCH RED VOLTAGE CLIPINVERTER WIRE _______________________ GREEN VOLTAGE INVERTER WIRE 1112 VOLT INPUT IFROMAUTO BATTERY C 16 GUAGE LAMP CORD PAIR 4 WIRENUT MODIFIED CHARGE SYSTEM Belgiums Peter Blommaart has gathered up fine articles magazine offers Compen dium available $17 postpaid Peter Blommaart Ampere Flyer PO Box 23 B-6200 Gosselies Belgium No serious Electric flier should copy way annual subscription monthly Ampere Flyer goes $25 Among other things Ampere Flyers product supply service includes very nice Unger motors Peter accepts various credit cards write tell him saw MA Former World Champion RC Soaring pilot Dwight Holley has taken up Electric enthused plans get business supplying Electric mer chandise Hes process research ing availability items worldwide intends carry good complete line attractive prices can write Holleys Silent Flight 151 Chestnut Ridge Bethel CT 06801 Video dont know videotapes Electric flying person 1984 KRC Electric Fly video camera recorder might have good tapeif knew per son reading column please drop line Maybe can arrange sharing 52 Model Aviation tape youre able interested Just thinkyou may have first-ever Electric Video possession Thank have sent let tersand especially pictures Most photos get quite good easy candidates inclusion column Unfortunately just have able use ones have received because how-to photos nor mally try publish month Right now have quite backlog both pho tos topics however appreciate inputs will use whatever can space allows Please continue write send photos might tell Editor much love column tell him need space issue Motor versus Radio Heres tip comes some hard experience routine some radios glitch upon turn-on airborne system and/or transmitter well However have servo-activated On-Off motor switch take heed model does have landing gear permitting prop clear ance bench ground pick plane up before turning radio Should happen motor control servo would momentarily twitch hit switch prop free spin Otherwise momentarily-stalled motor can take out system fuse hap pened switch Switch installa tions normally field-serviceable little care can prevent trip back home question comes up now concerns radio range Electrics ground check Electric would ordi narily produce good ol familiar range customary particular radio system antenna orientation until motor started its possible have kinds glitching Continued page 144 Look familiar clue fact HeavyDuty Charger L has modified since presented last month change switch box upper right corner cioseup switch box R shows now has two DPDT switches instead single household 3way wali switch Theyre used select outputs 12 24 36 voits inside Radio Shack Voitage inverter L new component must wire instali Youll have little bit soldering Study photo wiring schematic opposite page see new components connected closeup R new component reveais Its simplicity termInal strip couple diodes electrolytic capacItor coupie hunks wire terminsi strip boited top inverters toroidai coli iocation solely convenience RC Electrics/Kopski Continued page 53 control might impaired motor cant turned off Moving transmitter closer helps restore control What have case motor electrical noise affecting radio both introducing undesired signals same time reducing ability receiver recognize decode trans mitter signal noticeable dur ing range check course because thats exactly find weakest signal can think being similar listening AM radio during electrical stormor perhaps someone using power tool nearby weaker stations hard est hear must settle strong er stations As guideline suggest ground check range reduction up l0%/15% acceptable motor conditions Normally present-day radio performance extremely good such range impairment likely problem situations severe suggest take close look installation Several things can cause unnecessarily high levels radio static include untidy wiring installations perhaps receiver antenna lead dress brings betwixt between motor system wiring Also worn damaged motor brushes commutators can result excessive sparking Another common problem occurs electronic speed controls used Some receivers simply will tolerate being connected motor power system wir ing would case speed con trols optically coupled Most often has nothing speed control per se rather receiver behavior such environment can test temporarily removing speed control operating motor manual switch receiver displays essentially normal range way much hope same speed-control installation can made work would have consider anoth er radio perhaps speed control optical coupling subject speed controls popular units use recent Electric Flys Jomar products Joe Utasis SC-l SC-2 controls based design published Model Aviation about two years ago some com petitive designs products marketand coming along includ ing Im told Joe Anyway use modified SC-2 Eureka its modification want bring attention design Jomar controls allow motor come absence sig nal Thus turn radio motor systems having trans mitter signal present motor will come Onand can become quite testy experience course same thing will happen plane flies through sig nal nulls experiences other glitch conditions can have motor running wide open dont want happen visitors plane transmitter went dead during takeoff taxi uncontrolled plane took off full motor instance no way plane fared pretty well Good fortune strikes again situation can easily corrected addition single resistor did SC-2 immediately upon ana lyzing problem discussing Joe well up matter can help regard Think move safety direction charge system modification Last month column presented simple charge system could assembled nearly anyone would charge systems up 14 cells month gonna look simple addition system will extend its operation up wards 16-cell packs can charged easily 18 cells can charged reduced currents very nicely S 0 II1{1 0] 0 Send $100in Cash Check Stamps 32 Page Tabloid size illustrated DISCOUNT Catalog Sent 1st Class Mail COMET OX FLYLINE FOX GOLDBERG GUELLOWS JETCO K&3- PACIrRA PECK POLYMER PERFECir- SIG STERLING SULLIVAN- TP FLITE & OTHERS PENN VALLEY HOllY CENTER 137 1 Kai St LanudaIs 119441 2251 855 22083080 NOWWORRY FREE STARTING POWER New completely automatic maintenance syatem tar wet gelled cells No run-down batteries xplosive gasses generated undercharged inter storage problems No boiled-dry batterieo ttention required-electronically lonercharged maintains foil charge lUST CONNECr ITTHEN FOAGET IT CaRa Prockacts specify 6 12 or24 volti PO Box 221 $3995Canton SD 57013 9e7-0924 0200 5&H 5AEfr information PRODUCTS FOR THE DISCERNING MODELER Complete Line Exhaust Systems dMuffled Tuned Pipes Headers uri Mufflers Expansion Mufflers copter Ball Mufflers ialized Exhaust Systems Unsurpass Wsk.hi, Pjfomance 144 Model Aviation So much br good newsnow bad modification requires solder ing Youll recall last months charge system solderless designed thai way greatest number people could benefit Any way theres no way around soldering version o youre equipped skilled area find friend can help Thres much involved work must done carefully cor rectly Remember dealing big power youll want absolutely sure corrcct quality assembly job three minor modifications re quired make higher-voltage version simple charge system Radio Shack Voltag Booster fine product makes whole thing work must modified addition two rectifier diodes capacitor extra leadout wire goes warranty shown schematically pho tos assembled small terminal strip simple circuit addition allows Voltage Irverter develop total 36 volts output nominal 12 volt auto battery irput trick being able charge 14 cells second area requiring change switch wiring box case simple household wall switch replaced two double-pole double-throw tog gle switches two switches used combination t select 12 24 36 volt options conjunction resistor bank determine charge current As suggested photos switch selects either 12 volt optionor other switch second switch selects between 24 36 volt options unit shown original switch cover plate has replaced new cover made counter-top materi al Aluminum 1-in plywood can used make new toggle-switch mountand put lid junction box same time other change replace original 8 amp in-line fuse Voltage Inverter having higher value Im using 15 amp instead fully loaded new charge system has out put current 10 amps 12 volt sup ply Id feel better about 12 amp fuse readily available modified charging system easy use last months version suggest review column Either version has maximum output current three amps Please dont try stretch high er Also good idea keep systems out direct sunlight possi blethey will run cooler make sure connections auto battery clean tight impor tant version input current higher before suggest using 12-volt position charge up six cells 24-volt position up 12 cells 36-volt position past 12 cells design will deliver full three amps 16 cells somewhat lower lesscontrolled current 18 cells astute readers may wonder cells cant handled 36 volts because latter configura tion does have good regulation ie 36 volts drops near 30 under load few advisories start car system use use system car running Astro Leisure charger has trickle charge function discussed last month recommend disconnect it36 volts just too much 24 volts pushing Also sure turn current adjustment knob Astro 4005D fully CW until clicks allow charge system output leads come contact auto bodythey can hot respect other Remember normal system run 12 volt source connect edwhether model battery under charge system idling no output current input current very low Voltage Inverter has noticeable whine running perfectly normal wish can add master On-Off switch positive power input line ran new version under stressed conditions bench over two hours continuously no problems course resistor bank gets very hot explained last month Voltage Invert146 Model Aviation Dave Browns ILLUSION WINDY WEATHER FLYER major obstacle consistent 10s paffern flying has always windy weather Dave Brown set out design plane would minimize effect buffety turbulent air result ultra sleek Illusion Refinements include half-hidden pipe easy service yet re duces dragso larger plane flies same speed lower wing loading higher wing location lessens effect turbulence reduced stab anhedral minimizes up down pitching crosswinds higher wing taper ratio improves aileron response Custom kit includes custom made lightweight epoxy fiber glass fuse belly pan Hand picked lightweight balsa sheeting wing stab Dave Brown pushrods OB 80 mount Rocket city aileron links necessary machine cut ed parts Photo illustrated instructions Daves airplane tor reference subtle changes create smooth flying high performance pat tern plane weatherl See dealers today Span 65 Area 750 sq Engine 60 channels 4-5 URSANA LLrNOIS 61S01 217AA7-2O69 er housing also gets hotabout 600 C worth Thats well range properly-designed circuit though uncom fortable hand Military elec tronics often required perform specification temperatures exceeding boiling fact boiling water can used cool some electronic systems point Id like comment earlier Astro 15 25 systems used 16 cells 055 12 Ah capacity respectively perfectly usable systems fact have beltdrive 15 version continuous use six years have worn out three brush sets belt drive Any having systems out service because charging frustrations can now dust off remember large motors discussed two columns ago Use simple charge system charge big battery packs need too recommend following convenient charge currents times packs essentially dead 055 Ah2 amps 15 minutes 08 Ah3 amps 15 minutes 12 Ah3 amps 20 minutes Yet come charging large packs including sophisticated elec tronically-controlled charger no resistor bank demanding skilled readers will based onyou guessed itthe Radio Shack Voltage Inverter Basic Electricity series has back burner temporarily plan resume next month stay us Meanwhile comment question may forwarded author SASE please Happy Electric Landings Bob Kopski 25 West End Dr Lans dale PA 19446 RC Pylon Racing/Hager Continued page 54 ing fast cuts air flow off will find tubing will need completely inside hole order stop air flow Also note no servo strain released flow position fuel tubing pops out hole activated engine running hear quick burp really works hope will give try saves once has paid itself besides make out scrap parts pieces last word Install fifth channel toggle switch Putting sys tem control stick normally used throttle rudder will definitely cause some exciting momentssuch possible engine shutdown after release move rudder stick position mistake shutdown system nownot halfway end servo throw As said before system de signed eliminate problems give try read columns either very interested racing already racing So support group people heartbeat Pylon Racing Join National Minia ture Pylon Racing Association NMPRA Dues $13 per year non-flying members $18 flying members information pay dues write Phil Bussell 4803 Fallon P1 Dallas TX 75227 Want see club get written up column send informa tion about clubs racing about contest Send some black white pic tures too will see what can can use color prints cant write about things dont know exist See next month Bill Hager 706 Glenhaven Dr Conroe TX 77385 Square neres no paiern aesign country tnat sanded pertection instructions can match Tipos long list contest wins hardware packs being improved reason sophisticated design gives Its rare plane can built flown neutral balance kit thats well easily novice t has potential engineered such good instructions win big-time Tipo winner can youre assured having hi performance too See local dealers today planejust like top fliers Great Planes delighted have acquired rights manufacture Tiporare qualily control can assured receiving highest quality fiberglass foam kit available Balsa parts will machine cut and PO BOX 721 URBANA ILLINOIS 61801 217/367-2089 If you want fly success Dont align model guess Lou Roberts
Edition: Model Aviation - 1985/06
Page Numbers: 52, 53, 144, 146, 147
Radio Control Electrics Bob Kopski ELECTRIC EVENTS now planned include following International Electric Fun Fly June 22-23 1985 Ontario Canada Site about 55 miles Niagara Falls Con tact Vic Walpole 102 Admiral Road Ajax Ontario LiS 2P1 Canada Also contact Vic want join Electric association An opening symposium Electric propulsion planning stages Third Annual Boeing Hawks Electric Fly-Ia Saturday June 29 1985 Kent WA Contact Bernard Cawley 210 37th St SE No 43 Auburn WA 98002 Prizes longest flight acrobatic smallest airplane others An Electric Clinic conducted Mitch Poling ten tatively scheduled South Shore RC Club Inc sponsors Electric meet Sunday July 21 1985 Contact Charles Sylvia PO Box 775 Middleboro MA 01246 Houston TX August/September 1985 time frame Electric meet hosted SPARKS Contact Ken Martin 13106 Newbrook Houston TX 77072 call 713 933-1688 Sixth Annual KRC Electric Fly Sep tember 21-22 1985 Hatfield PA information write KRC Electric Fly 140 Hopewell Ln Teldford PA 18960 Once again encourage small groups Electric fliers organize Electric get-together local area doesnt have anything formal fancyjust call Come Fly Us send copy flyer Ill best get columnif get time takes about three months get item print after receive Send info Electric columnists other model magazines too Theyre good guys will Im sure happy assist promoting Electric activity Electric publications supplies Con gratulations Mitch Poling publication Kaimbach new book Building Flying ElectricPowered Model Aircraft Kaimbach PMb lishing Co 11027 North Seventh St Milwaukee WI 53223$995 plus $1 postage book also available hobby shops 76 pages filled photos text covers essential ly everything need know build fly enjoy Electric Its recommended newcomer old pro alike Nice job Mitch similar vein man brings Ampere Flyer month D 3AMP 50V RECTIFIER C 220jiF 35V ELECTROLYTIC SEE TEXT 1 -F IL OUTPUT LEAD FROM SOLDER LUG STRIP ASSY 6REEN LEADTO12 VOLT POWER INPUT IN SWITCH BOX ~~1 -LINE FUSE BLACK LEAD TO -1-12 V POWER UINPUT IN SWITCH BOX K RED 24 V OUTPUT LEAD -DOTTED WIRING IS NEW ADDED CIRCUITRY -SOLID WIRING IS NORMAL VOLTAGE INVERTER SCHEMATIC OF MODIFIED VOLTAGE INVERTER Bob has modification HavyDuty Charging System described last month can now charge battery packs up 20 ceils schematic wiring diagram above shows Radio Shack Voltage inverter must modified build new charger sketch beiow shows wire new DPDT switches switch box MUST things right 16 GUAGE LAMP jJ\WI RENUT CORD PAIR I2 VOLT INPUTNii CLIP ________________________ BLACK LEAD TO VOLTAGE INVERTER ______________________________NEW VOLTAGE INVERTER NOTE VERIFY SWITCH HANDLEOUTPUT WIRE POSITIONS BEFORE LABELING SWITCHES RADIO SHACK NO 275-636 I2 24/36 SWITCHIOR SIMILAR TO STOR BANK IFINE STEPS TO STOR BANK ICOARSE STEPS BOTTOM VIEW OF DOUBLE POLE DOUBLE THROW SWITCHES24/36 SWITCH RED VOLTAGE CLIPINVERTER WIRE _______________________ GREEN VOLTAGE INVERTER WIRE 1112 VOLT INPUT IFROMAUTO BATTERY C 16 GUAGE LAMP CORD PAIR 4 WIRENUT MODIFIED CHARGE SYSTEM Belgiums Peter Blommaart has gathered up fine articles magazine offers Compen dium available $17 postpaid Peter Blommaart Ampere Flyer PO Box 23 B-6200 Gosselies Belgium No serious Electric flier should copy way annual subscription monthly Ampere Flyer goes $25 Among other things Ampere Flyers product supply service includes very nice Unger motors Peter accepts various credit cards write tell him saw MA Former World Champion RC Soaring pilot Dwight Holley has taken up Electric enthused plans get business supplying Electric mer chandise Hes process research ing availability items worldwide intends carry good complete line attractive prices can write Holleys Silent Flight 151 Chestnut Ridge Bethel CT 06801 Video dont know videotapes Electric flying person 1984 KRC Electric Fly video camera recorder might have good tapeif knew per son reading column please drop line Maybe can arrange sharing 52 Model Aviation tape youre able interested Just thinkyou may have first-ever Electric Video possession Thank have sent let tersand especially pictures Most photos get quite good easy candidates inclusion column Unfortunately just have able use ones have received because how-to photos nor mally try publish month Right now have quite backlog both pho tos topics however appreciate inputs will use whatever can space allows Please continue write send photos might tell Editor much love column tell him need space issue Motor versus Radio Heres tip comes some hard experience routine some radios glitch upon turn-on airborne system and/or transmitter well However have servo-activated On-Off motor switch take heed model does have landing gear permitting prop clear ance bench ground pick plane up before turning radio Should happen motor control servo would momentarily twitch hit switch prop free spin Otherwise momentarily-stalled motor can take out system fuse hap pened switch Switch installa tions normally field-serviceable little care can prevent trip back home question comes up now concerns radio range Electrics ground check Electric would ordi narily produce good ol familiar range customary particular radio system antenna orientation until motor started its possible have kinds glitching Continued page 144 Look familiar clue fact HeavyDuty Charger L has modified since presented last month change switch box upper right corner cioseup switch box R shows now has two DPDT switches instead single household 3way wali switch Theyre used select outputs 12 24 36 voits inside Radio Shack Voitage inverter L new component must wire instali Youll have little bit soldering Study photo wiring schematic opposite page see new components connected closeup R new component reveais Its simplicity termInal strip couple diodes electrolytic capacItor coupie hunks wire terminsi strip boited top inverters toroidai coli iocation solely convenience RC Electrics/Kopski Continued page 53 control might impaired motor cant turned off Moving transmitter closer helps restore control What have case motor electrical noise affecting radio both introducing undesired signals same time reducing ability receiver recognize decode trans mitter signal noticeable dur ing range check course because thats exactly find weakest signal can think being similar listening AM radio during electrical stormor perhaps someone using power tool nearby weaker stations hard est hear must settle strong er stations As guideline suggest ground check range reduction up l0%/15% acceptable motor conditions Normally present-day radio performance extremely good such range impairment likely problem situations severe suggest take close look installation Several things can cause unnecessarily high levels radio static include untidy wiring installations perhaps receiver antenna lead dress brings betwixt between motor system wiring Also worn damaged motor brushes commutators can result excessive sparking Another common problem occurs electronic speed controls used Some receivers simply will tolerate being connected motor power system wir ing would case speed con trols optically coupled Most often has nothing speed control per se rather receiver behavior such environment can test temporarily removing speed control operating motor manual switch receiver displays essentially normal range way much hope same speed-control installation can made work would have consider anoth er radio perhaps speed control optical coupling subject speed controls popular units use recent Electric Flys Jomar products Joe Utasis SC-l SC-2 controls based design published Model Aviation about two years ago some com petitive designs products marketand coming along includ ing Im told Joe Anyway use modified SC-2 Eureka its modification want bring attention design Jomar controls allow motor come absence sig nal Thus turn radio motor systems having trans mitter signal present motor will come Onand can become quite testy experience course same thing will happen plane flies through sig nal nulls experiences other glitch conditions can have motor running wide open dont want happen visitors plane transmitter went dead during takeoff taxi uncontrolled plane took off full motor instance no way plane fared pretty well Good fortune strikes again situation can easily corrected addition single resistor did SC-2 immediately upon ana lyzing problem discussing Joe well up matter can help regard Think move safety direction charge system modification Last month column presented simple charge system could assembled nearly anyone would charge systems up 14 cells month gonna look simple addition system will extend its operation up wards 16-cell packs can charged easily 18 cells can charged reduced currents very nicely S 0 II1{1 0] 0 Send $100in Cash Check Stamps 32 Page Tabloid size illustrated DISCOUNT Catalog Sent 1st Class Mail COMET OX FLYLINE FOX GOLDBERG GUELLOWS JETCO K&3- PACIrRA PECK POLYMER PERFECir- SIG STERLING SULLIVAN- TP FLITE & OTHERS PENN VALLEY HOllY CENTER 137 1 Kai St LanudaIs 119441 2251 855 22083080 NOWWORRY FREE STARTING POWER New completely automatic maintenance syatem tar wet gelled cells No run-down batteries xplosive gasses generated undercharged inter storage problems No boiled-dry batterieo ttention required-electronically lonercharged maintains foil charge lUST CONNECr ITTHEN FOAGET IT CaRa Prockacts specify 6 12 or24 volti PO Box 221 $3995Canton SD 57013 9e7-0924 0200 5&H 5AEfr information PRODUCTS FOR THE DISCERNING MODELER Complete Line Exhaust Systems dMuffled Tuned Pipes Headers uri Mufflers Expansion Mufflers copter Ball Mufflers ialized Exhaust Systems Unsurpass Wsk.hi, Pjfomance 144 Model Aviation So much br good newsnow bad modification requires solder ing Youll recall last months charge system solderless designed thai way greatest number people could benefit Any way theres no way around soldering version o youre equipped skilled area find friend can help Thres much involved work must done carefully cor rectly Remember dealing big power youll want absolutely sure corrcct quality assembly job three minor modifications re quired make higher-voltage version simple charge system Radio Shack Voltag Booster fine product makes whole thing work must modified addition two rectifier diodes capacitor extra leadout wire goes warranty shown schematically pho tos assembled small terminal strip simple circuit addition allows Voltage Irverter develop total 36 volts output nominal 12 volt auto battery irput trick being able charge 14 cells second area requiring change switch wiring box case simple household wall switch replaced two double-pole double-throw tog gle switches two switches used combination t select 12 24 36 volt options conjunction resistor bank determine charge current As suggested photos switch selects either 12 volt optionor other switch second switch selects between 24 36 volt options unit shown original switch cover plate has replaced new cover made counter-top materi al Aluminum 1-in plywood can used make new toggle-switch mountand put lid junction box same time other change replace original 8 amp in-line fuse Voltage Inverter having higher value Im using 15 amp instead fully loaded new charge system has out put current 10 amps 12 volt sup ply Id feel better about 12 amp fuse readily available modified charging system easy use last months version suggest review column Either version has maximum output current three amps Please dont try stretch high er Also good idea keep systems out direct sunlight possi blethey will run cooler make sure connections auto battery clean tight impor tant version input current higher before suggest using 12-volt position charge up six cells 24-volt position up 12 cells 36-volt position past 12 cells design will deliver full three amps 16 cells somewhat lower lesscontrolled current 18 cells astute readers may wonder cells cant handled 36 volts because latter configura tion does have good regulation ie 36 volts drops near 30 under load few advisories start car system use use system car running Astro Leisure charger has trickle charge function discussed last month recommend disconnect it36 volts just too much 24 volts pushing Also sure turn current adjustment knob Astro 4005D fully CW until clicks allow charge system output leads come contact auto bodythey can hot respect other Remember normal system run 12 volt source connect edwhether model battery under charge system idling no output current input current very low Voltage Inverter has noticeable whine running perfectly normal wish can add master On-Off switch positive power input line ran new version under stressed conditions bench over two hours continuously no problems course resistor bank gets very hot explained last month Voltage Invert146 Model Aviation Dave Browns ILLUSION WINDY WEATHER FLYER major obstacle consistent 10s paffern flying has always windy weather Dave Brown set out design plane would minimize effect buffety turbulent air result ultra sleek Illusion Refinements include half-hidden pipe easy service yet re duces dragso larger plane flies same speed lower wing loading higher wing location lessens effect turbulence reduced stab anhedral minimizes up down pitching crosswinds higher wing taper ratio improves aileron response Custom kit includes custom made lightweight epoxy fiber glass fuse belly pan Hand picked lightweight balsa sheeting wing stab Dave Brown pushrods OB 80 mount Rocket city aileron links necessary machine cut ed parts Photo illustrated instructions Daves airplane tor reference subtle changes create smooth flying high performance pat tern plane weatherl See dealers today Span 65 Area 750 sq Engine 60 channels 4-5 URSANA LLrNOIS 61S01 217AA7-2O69 er housing also gets hotabout 600 C worth Thats well range properly-designed circuit though uncom fortable hand Military elec tronics often required perform specification temperatures exceeding boiling fact boiling water can used cool some electronic systems point Id like comment earlier Astro 15 25 systems used 16 cells 055 12 Ah capacity respectively perfectly usable systems fact have beltdrive 15 version continuous use six years have worn out three brush sets belt drive Any having systems out service because charging frustrations can now dust off remember large motors discussed two columns ago Use simple charge system charge big battery packs need too recommend following convenient charge currents times packs essentially dead 055 Ah2 amps 15 minutes 08 Ah3 amps 15 minutes 12 Ah3 amps 20 minutes Yet come charging large packs including sophisticated elec tronically-controlled charger no resistor bank demanding skilled readers will based onyou guessed itthe Radio Shack Voltage Inverter Basic Electricity series has back burner temporarily plan resume next month stay us Meanwhile comment question may forwarded author SASE please Happy Electric Landings Bob Kopski 25 West End Dr Lans dale PA 19446 RC Pylon Racing/Hager Continued page 54 ing fast cuts air flow off will find tubing will need completely inside hole order stop air flow Also note no servo strain released flow position fuel tubing pops out hole activated engine running hear quick burp really works hope will give try saves once has paid itself besides make out scrap parts pieces last word Install fifth channel toggle switch Putting sys tem control stick normally used throttle rudder will definitely cause some exciting momentssuch possible engine shutdown after release move rudder stick position mistake shutdown system nownot halfway end servo throw As said before system de signed eliminate problems give try read columns either very interested racing already racing So support group people heartbeat Pylon Racing Join National Minia ture Pylon Racing Association NMPRA Dues $13 per year non-flying members $18 flying members information pay dues write Phil Bussell 4803 Fallon P1 Dallas TX 75227 Want see club get written up column send informa tion about clubs racing about contest Send some black white pic tures too will see what can can use color prints cant write about things dont know exist See next month Bill Hager 706 Glenhaven Dr Conroe TX 77385 Square neres no paiern aesign country tnat sanded pertection instructions can match Tipos long list contest wins hardware packs being improved reason sophisticated design gives Its rare plane can built flown neutral balance kit thats well easily novice t has potential engineered such good instructions win big-time Tipo winner can youre assured having hi performance too See local dealers today planejust like top fliers Great Planes delighted have acquired rights manufacture Tiporare qualily control can assured receiving highest quality fiberglass foam kit available Balsa parts will machine cut and PO BOX 721 URBANA ILLINOIS 61801 217/367-2089 If you want fly success Dont align model guess Lou Roberts
Edition: Model Aviation - 1985/06
Page Numbers: 52, 53, 144, 146, 147
Radio Control Electrics Bob Kopski ELECTRIC EVENTS now planned include following International Electric Fun Fly June 22-23 1985 Ontario Canada Site about 55 miles Niagara Falls Con tact Vic Walpole 102 Admiral Road Ajax Ontario LiS 2P1 Canada Also contact Vic want join Electric association An opening symposium Electric propulsion planning stages Third Annual Boeing Hawks Electric Fly-Ia Saturday June 29 1985 Kent WA Contact Bernard Cawley 210 37th St SE No 43 Auburn WA 98002 Prizes longest flight acrobatic smallest airplane others An Electric Clinic conducted Mitch Poling ten tatively scheduled South Shore RC Club Inc sponsors Electric meet Sunday July 21 1985 Contact Charles Sylvia PO Box 775 Middleboro MA 01246 Houston TX August/September 1985 time frame Electric meet hosted SPARKS Contact Ken Martin 13106 Newbrook Houston TX 77072 call 713 933-1688 Sixth Annual KRC Electric Fly Sep tember 21-22 1985 Hatfield PA information write KRC Electric Fly 140 Hopewell Ln Teldford PA 18960 Once again encourage small groups Electric fliers organize Electric get-together local area doesnt have anything formal fancyjust call Come Fly Us send copy flyer Ill best get columnif get time takes about three months get item print after receive Send info Electric columnists other model magazines too Theyre good guys will Im sure happy assist promoting Electric activity Electric publications supplies Con gratulations Mitch Poling publication Kaimbach new book Building Flying ElectricPowered Model Aircraft Kaimbach PMb lishing Co 11027 North Seventh St Milwaukee WI 53223$995 plus $1 postage book also available hobby shops 76 pages filled photos text covers essential ly everything need know build fly enjoy Electric Its recommended newcomer old pro alike Nice job Mitch similar vein man brings Ampere Flyer month D 3AMP 50V RECTIFIER C 220jiF 35V ELECTROLYTIC SEE TEXT 1 -F IL OUTPUT LEAD FROM SOLDER LUG STRIP ASSY 6REEN LEADTO12 VOLT POWER INPUT IN SWITCH BOX ~~1 -LINE FUSE BLACK LEAD TO -1-12 V POWER UINPUT IN SWITCH BOX K RED 24 V OUTPUT LEAD -DOTTED WIRING IS NEW ADDED CIRCUITRY -SOLID WIRING IS NORMAL VOLTAGE INVERTER SCHEMATIC OF MODIFIED VOLTAGE INVERTER Bob has modification HavyDuty Charging System described last month can now charge battery packs up 20 ceils schematic wiring diagram above shows Radio Shack Voltage inverter must modified build new charger sketch beiow shows wire new DPDT switches switch box MUST things right 16 GUAGE LAMP jJ\WI RENUT CORD PAIR I2 VOLT INPUTNii CLIP ________________________ BLACK LEAD TO VOLTAGE INVERTER ______________________________NEW VOLTAGE INVERTER NOTE VERIFY SWITCH HANDLEOUTPUT WIRE POSITIONS BEFORE LABELING SWITCHES RADIO SHACK NO 275-636 I2 24/36 SWITCHIOR SIMILAR TO STOR BANK IFINE STEPS TO STOR BANK ICOARSE STEPS BOTTOM VIEW OF DOUBLE POLE DOUBLE THROW SWITCHES24/36 SWITCH RED VOLTAGE CLIPINVERTER WIRE _______________________ GREEN VOLTAGE INVERTER WIRE 1112 VOLT INPUT IFROMAUTO BATTERY C 16 GUAGE LAMP CORD PAIR 4 WIRENUT MODIFIED CHARGE SYSTEM Belgiums Peter Blommaart has gathered up fine articles magazine offers Compen dium available $17 postpaid Peter Blommaart Ampere Flyer PO Box 23 B-6200 Gosselies Belgium No serious Electric flier should copy way annual subscription monthly Ampere Flyer goes $25 Among other things Ampere Flyers product supply service includes very nice Unger motors Peter accepts various credit cards write tell him saw MA Former World Champion RC Soaring pilot Dwight Holley has taken up Electric enthused plans get business supplying Electric mer chandise Hes process research ing availability items worldwide intends carry good complete line attractive prices can write Holleys Silent Flight 151 Chestnut Ridge Bethel CT 06801 Video dont know videotapes Electric flying person 1984 KRC Electric Fly video camera recorder might have good tapeif knew per son reading column please drop line Maybe can arrange sharing 52 Model Aviation tape youre able interested Just thinkyou may have first-ever Electric Video possession Thank have sent let tersand especially pictures Most photos get quite good easy candidates inclusion column Unfortunately just have able use ones have received because how-to photos nor mally try publish month Right now have quite backlog both pho tos topics however appreciate inputs will use whatever can space allows Please continue write send photos might tell Editor much love column tell him need space issue Motor versus Radio Heres tip comes some hard experience routine some radios glitch upon turn-on airborne system and/or transmitter well However have servo-activated On-Off motor switch take heed model does have landing gear permitting prop clear ance bench ground pick plane up before turning radio Should happen motor control servo would momentarily twitch hit switch prop free spin Otherwise momentarily-stalled motor can take out system fuse hap pened switch Switch installa tions normally field-serviceable little care can prevent trip back home question comes up now concerns radio range Electrics ground check Electric would ordi narily produce good ol familiar range customary particular radio system antenna orientation until motor started its possible have kinds glitching Continued page 144 Look familiar clue fact HeavyDuty Charger L has modified since presented last month change switch box upper right corner cioseup switch box R shows now has two DPDT switches instead single household 3way wali switch Theyre used select outputs 12 24 36 voits inside Radio Shack Voitage inverter L new component must wire instali Youll have little bit soldering Study photo wiring schematic opposite page see new components connected closeup R new component reveais Its simplicity termInal strip couple diodes electrolytic capacItor coupie hunks wire terminsi strip boited top inverters toroidai coli iocation solely convenience RC Electrics/Kopski Continued page 53 control might impaired motor cant turned off Moving transmitter closer helps restore control What have case motor electrical noise affecting radio both introducing undesired signals same time reducing ability receiver recognize decode trans mitter signal noticeable dur ing range check course because thats exactly find weakest signal can think being similar listening AM radio during electrical stormor perhaps someone using power tool nearby weaker stations hard est hear must settle strong er stations As guideline suggest ground check range reduction up l0%/15% acceptable motor conditions Normally present-day radio performance extremely good such range impairment likely problem situations severe suggest take close look installation Several things can cause unnecessarily high levels radio static include untidy wiring installations perhaps receiver antenna lead dress brings betwixt between motor system wiring Also worn damaged motor brushes commutators can result excessive sparking Another common problem occurs electronic speed controls used Some receivers simply will tolerate being connected motor power system wir ing would case speed con trols optically coupled Most often has nothing speed control per se rather receiver behavior such environment can test temporarily removing speed control operating motor manual switch receiver displays essentially normal range way much hope same speed-control installation can made work would have consider anoth er radio perhaps speed control optical coupling subject speed controls popular units use recent Electric Flys Jomar products Joe Utasis SC-l SC-2 controls based design published Model Aviation about two years ago some com petitive designs products marketand coming along includ ing Im told Joe Anyway use modified SC-2 Eureka its modification want bring attention design Jomar controls allow motor come absence sig nal Thus turn radio motor systems having trans mitter signal present motor will come Onand can become quite testy experience course same thing will happen plane flies through sig nal nulls experiences other glitch conditions can have motor running wide open dont want happen visitors plane transmitter went dead during takeoff taxi uncontrolled plane took off full motor instance no way plane fared pretty well Good fortune strikes again situation can easily corrected addition single resistor did SC-2 immediately upon ana lyzing problem discussing Joe well up matter can help regard Think move safety direction charge system modification Last month column presented simple charge system could assembled nearly anyone would charge systems up 14 cells month gonna look simple addition system will extend its operation up wards 16-cell packs can charged easily 18 cells can charged reduced currents very nicely S 0 II1{1 0] 0 Send $100in Cash Check Stamps 32 Page Tabloid size illustrated DISCOUNT Catalog Sent 1st Class Mail COMET OX FLYLINE FOX GOLDBERG GUELLOWS JETCO K&3- PACIrRA PECK POLYMER PERFECir- SIG STERLING SULLIVAN- TP FLITE & OTHERS PENN VALLEY HOllY CENTER 137 1 Kai St LanudaIs 119441 2251 855 22083080 NOWWORRY FREE STARTING POWER New completely automatic maintenance syatem tar wet gelled cells No run-down batteries xplosive gasses generated undercharged inter storage problems No boiled-dry batterieo ttention required-electronically lonercharged maintains foil charge lUST CONNECr ITTHEN FOAGET IT CaRa Prockacts specify 6 12 or24 volti PO Box 221 $3995Canton SD 57013 9e7-0924 0200 5&H 5AEfr information PRODUCTS FOR THE DISCERNING MODELER Complete Line Exhaust Systems dMuffled Tuned Pipes Headers uri Mufflers Expansion Mufflers copter Ball Mufflers ialized Exhaust Systems Unsurpass Wsk.hi, Pjfomance 144 Model Aviation So much br good newsnow bad modification requires solder ing Youll recall last months charge system solderless designed thai way greatest number people could benefit Any way theres no way around soldering version o youre equipped skilled area find friend can help Thres much involved work must done carefully cor rectly Remember dealing big power youll want absolutely sure corrcct quality assembly job three minor modifications re quired make higher-voltage version simple charge system Radio Shack Voltag Booster fine product makes whole thing work must modified addition two rectifier diodes capacitor extra leadout wire goes warranty shown schematically pho tos assembled small terminal strip simple circuit addition allows Voltage Irverter develop total 36 volts output nominal 12 volt auto battery irput trick being able charge 14 cells second area requiring change switch wiring box case simple household wall switch replaced two double-pole double-throw tog gle switches two switches used combination t select 12 24 36 volt options conjunction resistor bank determine charge current As suggested photos switch selects either 12 volt optionor other switch second switch selects between 24 36 volt options unit shown original switch cover plate has replaced new cover made counter-top materi al Aluminum 1-in plywood can used make new toggle-switch mountand put lid junction box same time other change replace original 8 amp in-line fuse Voltage Inverter having higher value Im using 15 amp instead fully loaded new charge system has out put current 10 amps 12 volt sup ply Id feel better about 12 amp fuse readily available modified charging system easy use last months version suggest review column Either version has maximum output current three amps Please dont try stretch high er Also good idea keep systems out direct sunlight possi blethey will run cooler make sure connections auto battery clean tight impor tant version input current higher before suggest using 12-volt position charge up six cells 24-volt position up 12 cells 36-volt position past 12 cells design will deliver full three amps 16 cells somewhat lower lesscontrolled current 18 cells astute readers may wonder cells cant handled 36 volts because latter configura tion does have good regulation ie 36 volts drops near 30 under load few advisories start car system use use system car running Astro Leisure charger has trickle charge function discussed last month recommend disconnect it36 volts just too much 24 volts pushing Also sure turn current adjustment knob Astro 4005D fully CW until clicks allow charge system output leads come contact auto bodythey can hot respect other Remember normal system run 12 volt source connect edwhether model battery under charge system idling no output current input current very low Voltage Inverter has noticeable whine running perfectly normal wish can add master On-Off switch positive power input line ran new version under stressed conditions bench over two hours continuously no problems course resistor bank gets very hot explained last month Voltage Invert146 Model Aviation Dave Browns ILLUSION WINDY WEATHER FLYER major obstacle consistent 10s paffern flying has always windy weather Dave Brown set out design plane would minimize effect buffety turbulent air result ultra sleek Illusion Refinements include half-hidden pipe easy service yet re duces dragso larger plane flies same speed lower wing loading higher wing location lessens effect turbulence reduced stab anhedral minimizes up down pitching crosswinds higher wing taper ratio improves aileron response Custom kit includes custom made lightweight epoxy fiber glass fuse belly pan Hand picked lightweight balsa sheeting wing stab Dave Brown pushrods OB 80 mount Rocket city aileron links necessary machine cut ed parts Photo illustrated instructions Daves airplane tor reference subtle changes create smooth flying high performance pat tern plane weatherl See dealers today Span 65 Area 750 sq Engine 60 channels 4-5 URSANA LLrNOIS 61S01 217AA7-2O69 er housing also gets hotabout 600 C worth Thats well range properly-designed circuit though uncom fortable hand Military elec tronics often required perform specification temperatures exceeding boiling fact boiling water can used cool some electronic systems point Id like comment earlier Astro 15 25 systems used 16 cells 055 12 Ah capacity respectively perfectly usable systems fact have beltdrive 15 version continuous use six years have worn out three brush sets belt drive Any having systems out service because charging frustrations can now dust off remember large motors discussed two columns ago Use simple charge system charge big battery packs need too recommend following convenient charge currents times packs essentially dead 055 Ah2 amps 15 minutes 08 Ah3 amps 15 minutes 12 Ah3 amps 20 minutes Yet come charging large packs including sophisticated elec tronically-controlled charger no resistor bank demanding skilled readers will based onyou guessed itthe Radio Shack Voltage Inverter Basic Electricity series has back burner temporarily plan resume next month stay us Meanwhile comment question may forwarded author SASE please Happy Electric Landings Bob Kopski 25 West End Dr Lans dale PA 19446 RC Pylon Racing/Hager Continued page 54 ing fast cuts air flow off will find tubing will need completely inside hole order stop air flow Also note no servo strain released flow position fuel tubing pops out hole activated engine running hear quick burp really works hope will give try saves once has paid itself besides make out scrap parts pieces last word Install fifth channel toggle switch Putting sys tem control stick normally used throttle rudder will definitely cause some exciting momentssuch possible engine shutdown after release move rudder stick position mistake shutdown system nownot halfway end servo throw As said before system de signed eliminate problems give try read columns either very interested racing already racing So support group people heartbeat Pylon Racing Join National Minia ture Pylon Racing Association NMPRA Dues $13 per year non-flying members $18 flying members information pay dues write Phil Bussell 4803 Fallon P1 Dallas TX 75227 Want see club get written up column send informa tion about clubs racing about contest Send some black white pic tures too will see what can can use color prints cant write about things dont know exist See next month Bill Hager 706 Glenhaven Dr Conroe TX 77385 Square neres no paiern aesign country tnat sanded pertection instructions can match Tipos long list contest wins hardware packs being improved reason sophisticated design gives Its rare plane can built flown neutral balance kit thats well easily novice t has potential engineered such good instructions win big-time Tipo winner can youre assured having hi performance too See local dealers today planejust like top fliers Great Planes delighted have acquired rights manufacture Tiporare qualily control can assured receiving highest quality fiberglass foam kit available Balsa parts will machine cut and PO BOX 721 URBANA ILLINOIS 61801 217/367-2089 If you want fly success Dont align model guess Lou Roberts
Edition: Model Aviation - 1985/06
Page Numbers: 52, 53, 144, 146, 147
Radio Control Electrics Bob Kopski ELECTRIC EVENTS now planned include following International Electric Fun Fly June 22-23 1985 Ontario Canada Site about 55 miles Niagara Falls Con tact Vic Walpole 102 Admiral Road Ajax Ontario LiS 2P1 Canada Also contact Vic want join Electric association An opening symposium Electric propulsion planning stages Third Annual Boeing Hawks Electric Fly-Ia Saturday June 29 1985 Kent WA Contact Bernard Cawley 210 37th St SE No 43 Auburn WA 98002 Prizes longest flight acrobatic smallest airplane others An Electric Clinic conducted Mitch Poling ten tatively scheduled South Shore RC Club Inc sponsors Electric meet Sunday July 21 1985 Contact Charles Sylvia PO Box 775 Middleboro MA 01246 Houston TX August/September 1985 time frame Electric meet hosted SPARKS Contact Ken Martin 13106 Newbrook Houston TX 77072 call 713 933-1688 Sixth Annual KRC Electric Fly Sep tember 21-22 1985 Hatfield PA information write KRC Electric Fly 140 Hopewell Ln Teldford PA 18960 Once again encourage small groups Electric fliers organize Electric get-together local area doesnt have anything formal fancyjust call Come Fly Us send copy flyer Ill best get columnif get time takes about three months get item print after receive Send info Electric columnists other model magazines too Theyre good guys will Im sure happy assist promoting Electric activity Electric publications supplies Con gratulations Mitch Poling publication Kaimbach new book Building Flying ElectricPowered Model Aircraft Kaimbach PMb lishing Co 11027 North Seventh St Milwaukee WI 53223$995 plus $1 postage book also available hobby shops 76 pages filled photos text covers essential ly everything need know build fly enjoy Electric Its recommended newcomer old pro alike Nice job Mitch similar vein man brings Ampere Flyer month D 3AMP 50V RECTIFIER C 220jiF 35V ELECTROLYTIC SEE TEXT 1 -F IL OUTPUT LEAD FROM SOLDER LUG STRIP ASSY 6REEN LEADTO12 VOLT POWER INPUT IN SWITCH BOX ~~1 -LINE FUSE BLACK LEAD TO -1-12 V POWER UINPUT IN SWITCH BOX K RED 24 V OUTPUT LEAD -DOTTED WIRING IS NEW ADDED CIRCUITRY -SOLID WIRING IS NORMAL VOLTAGE INVERTER SCHEMATIC OF MODIFIED VOLTAGE INVERTER Bob has modification HavyDuty Charging System described last month can now charge battery packs up 20 ceils schematic wiring diagram above shows Radio Shack Voltage inverter must modified build new charger sketch beiow shows wire new DPDT switches switch box MUST things right 16 GUAGE LAMP jJ\WI RENUT CORD PAIR I2 VOLT INPUTNii CLIP ________________________ BLACK LEAD TO VOLTAGE INVERTER ______________________________NEW VOLTAGE INVERTER NOTE VERIFY SWITCH HANDLEOUTPUT WIRE POSITIONS BEFORE LABELING SWITCHES RADIO SHACK NO 275-636 I2 24/36 SWITCHIOR SIMILAR TO STOR BANK IFINE STEPS TO STOR BANK ICOARSE STEPS BOTTOM VIEW OF DOUBLE POLE DOUBLE THROW SWITCHES24/36 SWITCH RED VOLTAGE CLIPINVERTER WIRE _______________________ GREEN VOLTAGE INVERTER WIRE 1112 VOLT INPUT IFROMAUTO BATTERY C 16 GUAGE LAMP CORD PAIR 4 WIRENUT MODIFIED CHARGE SYSTEM Belgiums Peter Blommaart has gathered up fine articles magazine offers Compen dium available $17 postpaid Peter Blommaart Ampere Flyer PO Box 23 B-6200 Gosselies Belgium No serious Electric flier should copy way annual subscription monthly Ampere Flyer goes $25 Among other things Ampere Flyers product supply service includes very nice Unger motors Peter accepts various credit cards write tell him saw MA Former World Champion RC Soaring pilot Dwight Holley has taken up Electric enthused plans get business supplying Electric mer chandise Hes process research ing availability items worldwide intends carry good complete line attractive prices can write Holleys Silent Flight 151 Chestnut Ridge Bethel CT 06801 Video dont know videotapes Electric flying person 1984 KRC Electric Fly video camera recorder might have good tapeif knew per son reading column please drop line Maybe can arrange sharing 52 Model Aviation tape youre able interested Just thinkyou may have first-ever Electric Video possession Thank have sent let tersand especially pictures Most photos get quite good easy candidates inclusion column Unfortunately just have able use ones have received because how-to photos nor mally try publish month Right now have quite backlog both pho tos topics however appreciate inputs will use whatever can space allows Please continue write send photos might tell Editor much love column tell him need space issue Motor versus Radio Heres tip comes some hard experience routine some radios glitch upon turn-on airborne system and/or transmitter well However have servo-activated On-Off motor switch take heed model does have landing gear permitting prop clear ance bench ground pick plane up before turning radio Should happen motor control servo would momentarily twitch hit switch prop free spin Otherwise momentarily-stalled motor can take out system fuse hap pened switch Switch installa tions normally field-serviceable little care can prevent trip back home question comes up now concerns radio range Electrics ground check Electric would ordi narily produce good ol familiar range customary particular radio system antenna orientation until motor started its possible have kinds glitching Continued page 144 Look familiar clue fact HeavyDuty Charger L has modified since presented last month change switch box upper right corner cioseup switch box R shows now has two DPDT switches instead single household 3way wali switch Theyre used select outputs 12 24 36 voits inside Radio Shack Voitage inverter L new component must wire instali Youll have little bit soldering Study photo wiring schematic opposite page see new components connected closeup R new component reveais Its simplicity termInal strip couple diodes electrolytic capacItor coupie hunks wire terminsi strip boited top inverters toroidai coli iocation solely convenience RC Electrics/Kopski Continued page 53 control might impaired motor cant turned off Moving transmitter closer helps restore control What have case motor electrical noise affecting radio both introducing undesired signals same time reducing ability receiver recognize decode trans mitter signal noticeable dur ing range check course because thats exactly find weakest signal can think being similar listening AM radio during electrical stormor perhaps someone using power tool nearby weaker stations hard est hear must settle strong er stations As guideline suggest ground check range reduction up l0%/15% acceptable motor conditions Normally present-day radio performance extremely good such range impairment likely problem situations severe suggest take close look installation Several things can cause unnecessarily high levels radio static include untidy wiring installations perhaps receiver antenna lead dress brings betwixt between motor system wiring Also worn damaged motor brushes commutators can result excessive sparking Another common problem occurs electronic speed controls used Some receivers simply will tolerate being connected motor power system wir ing would case speed con trols optically coupled Most often has nothing speed control per se rather receiver behavior such environment can test temporarily removing speed control operating motor manual switch receiver displays essentially normal range way much hope same speed-control installation can made work would have consider anoth er radio perhaps speed control optical coupling subject speed controls popular units use recent Electric Flys Jomar products Joe Utasis SC-l SC-2 controls based design published Model Aviation about two years ago some com petitive designs products marketand coming along includ ing Im told Joe Anyway use modified SC-2 Eureka its modification want bring attention design Jomar controls allow motor come absence sig nal Thus turn radio motor systems having trans mitter signal present motor will come Onand can become quite testy experience course same thing will happen plane flies through sig nal nulls experiences other glitch conditions can have motor running wide open dont want happen visitors plane transmitter went dead during takeoff taxi uncontrolled plane took off full motor instance no way plane fared pretty well Good fortune strikes again situation can easily corrected addition single resistor did SC-2 immediately upon ana lyzing problem discussing Joe well up matter can help regard Think move safety direction charge system modification Last month column presented simple charge system could assembled nearly anyone would charge systems up 14 cells month gonna look simple addition system will extend its operation up wards 16-cell packs can charged easily 18 cells can charged reduced currents very nicely S 0 II1{1 0] 0 Send $100in Cash Check Stamps 32 Page Tabloid size illustrated DISCOUNT Catalog Sent 1st Class Mail COMET OX FLYLINE FOX GOLDBERG GUELLOWS JETCO K&3- PACIrRA PECK POLYMER PERFECir- SIG STERLING SULLIVAN- TP FLITE & OTHERS PENN VALLEY HOllY CENTER 137 1 Kai St LanudaIs 119441 2251 855 22083080 NOWWORRY FREE STARTING POWER New completely automatic maintenance syatem tar wet gelled cells No run-down batteries xplosive gasses generated undercharged inter storage problems No boiled-dry batterieo ttention required-electronically lonercharged maintains foil charge lUST CONNECr ITTHEN FOAGET IT CaRa Prockacts specify 6 12 or24 volti PO Box 221 $3995Canton SD 57013 9e7-0924 0200 5&H 5AEfr information PRODUCTS FOR THE DISCERNING MODELER Complete Line Exhaust Systems dMuffled Tuned Pipes Headers uri Mufflers Expansion Mufflers copter Ball Mufflers ialized Exhaust Systems Unsurpass Wsk.hi, Pjfomance 144 Model Aviation So much br good newsnow bad modification requires solder ing Youll recall last months charge system solderless designed thai way greatest number people could benefit Any way theres no way around soldering version o youre equipped skilled area find friend can help Thres much involved work must done carefully cor rectly Remember dealing big power youll want absolutely sure corrcct quality assembly job three minor modifications re quired make higher-voltage version simple charge system Radio Shack Voltag Booster fine product makes whole thing work must modified addition two rectifier diodes capacitor extra leadout wire goes warranty shown schematically pho tos assembled small terminal strip simple circuit addition allows Voltage Irverter develop total 36 volts output nominal 12 volt auto battery irput trick being able charge 14 cells second area requiring change switch wiring box case simple household wall switch replaced two double-pole double-throw tog gle switches two switches used combination t select 12 24 36 volt options conjunction resistor bank determine charge current As suggested photos switch selects either 12 volt optionor other switch second switch selects between 24 36 volt options unit shown original switch cover plate has replaced new cover made counter-top materi al Aluminum 1-in plywood can used make new toggle-switch mountand put lid junction box same time other change replace original 8 amp in-line fuse Voltage Inverter having higher value Im using 15 amp instead fully loaded new charge system has out put current 10 amps 12 volt sup ply Id feel better about 12 amp fuse readily available modified charging system easy use last months version suggest review column Either version has maximum output current three amps Please dont try stretch high er Also good idea keep systems out direct sunlight possi blethey will run cooler make sure connections auto battery clean tight impor tant version input current higher before suggest using 12-volt position charge up six cells 24-volt position up 12 cells 36-volt position past 12 cells design will deliver full three amps 16 cells somewhat lower lesscontrolled current 18 cells astute readers may wonder cells cant handled 36 volts because latter configura tion does have good regulation ie 36 volts drops near 30 under load few advisories start car system use use system car running Astro Leisure charger has trickle charge function discussed last month recommend disconnect it36 volts just too much 24 volts pushing Also sure turn current adjustment knob Astro 4005D fully CW until clicks allow charge system output leads come contact auto bodythey can hot respect other Remember normal system run 12 volt source connect edwhether model battery under charge system idling no output current input current very low Voltage Inverter has noticeable whine running perfectly normal wish can add master On-Off switch positive power input line ran new version under stressed conditions bench over two hours continuously no problems course resistor bank gets very hot explained last month Voltage Invert146 Model Aviation Dave Browns ILLUSION WINDY WEATHER FLYER major obstacle consistent 10s paffern flying has always windy weather Dave Brown set out design plane would minimize effect buffety turbulent air result ultra sleek Illusion Refinements include half-hidden pipe easy service yet re duces dragso larger plane flies same speed lower wing loading higher wing location lessens effect turbulence reduced stab anhedral minimizes up down pitching crosswinds higher wing taper ratio improves aileron response Custom kit includes custom made lightweight epoxy fiber glass fuse belly pan Hand picked lightweight balsa sheeting wing stab Dave Brown pushrods OB 80 mount Rocket city aileron links necessary machine cut ed parts Photo illustrated instructions Daves airplane tor reference subtle changes create smooth flying high performance pat tern plane weatherl See dealers today Span 65 Area 750 sq Engine 60 channels 4-5 URSANA LLrNOIS 61S01 217AA7-2O69 er housing also gets hotabout 600 C worth Thats well range properly-designed circuit though uncom fortable hand Military elec tronics often required perform specification temperatures exceeding boiling fact boiling water can used cool some electronic systems point Id like comment earlier Astro 15 25 systems used 16 cells 055 12 Ah capacity respectively perfectly usable systems fact have beltdrive 15 version continuous use six years have worn out three brush sets belt drive Any having systems out service because charging frustrations can now dust off remember large motors discussed two columns ago Use simple charge system charge big battery packs need too recommend following convenient charge currents times packs essentially dead 055 Ah2 amps 15 minutes 08 Ah3 amps 15 minutes 12 Ah3 amps 20 minutes Yet come charging large packs including sophisticated elec tronically-controlled charger no resistor bank demanding skilled readers will based onyou guessed itthe Radio Shack Voltage Inverter Basic Electricity series has back burner temporarily plan resume next month stay us Meanwhile comment question may forwarded author SASE please Happy Electric Landings Bob Kopski 25 West End Dr Lans dale PA 19446 RC Pylon Racing/Hager Continued page 54 ing fast cuts air flow off will find tubing will need completely inside hole order stop air flow Also note no servo strain released flow position fuel tubing pops out hole activated engine running hear quick burp really works hope will give try saves once has paid itself besides make out scrap parts pieces last word Install fifth channel toggle switch Putting sys tem control stick normally used throttle rudder will definitely cause some exciting momentssuch possible engine shutdown after release move rudder stick position mistake shutdown system nownot halfway end servo throw As said before system de signed eliminate problems give try read columns either very interested racing already racing So support group people heartbeat Pylon Racing Join National Minia ture Pylon Racing Association NMPRA Dues $13 per year non-flying members $18 flying members information pay dues write Phil Bussell 4803 Fallon P1 Dallas TX 75227 Want see club get written up column send informa tion about clubs racing about contest Send some black white pic tures too will see what can can use color prints cant write about things dont know exist See next month Bill Hager 706 Glenhaven Dr Conroe TX 77385 Square neres no paiern aesign country tnat sanded pertection instructions can match Tipos long list contest wins hardware packs being improved reason sophisticated design gives Its rare plane can built flown neutral balance kit thats well easily novice t has potential engineered such good instructions win big-time Tipo winner can youre assured having hi performance too See local dealers today planejust like top fliers Great Planes delighted have acquired rights manufacture Tiporare qualily control can assured receiving highest quality fiberglass foam kit available Balsa parts will machine cut and PO BOX 721 URBANA ILLINOIS 61801 217/367-2089 If you want fly success Dont align model guess Lou Roberts