THIS MONTHS TOPICS 1 Electric Connection Seivice 2 Electric Meets 3 FF Electric 4 Motor Noise 5 Errata 6 Closing Thought THE ELECTRIC CONNECTION Service opens months column two modelers looking find others area Electrically minded Jim Fox 838A Ronda Sevilla Laguna Hills California 92653 Tel 714/7681635 Jim getting back RC after five year layoff says column has sparked interest Electric contact Jim tell im Bob sent ya Next Bob Botha wrote tell recent relocation address below find no quiet flying vicinity Bob has made arrangements local sod farmer great field Electrics sailplanes has asked invite anyone interested area contact him 1739 Colette Drive N Mankato Minnesota 56003 Tel 507/345-1832 Humxninm-I think feel another club making four Electric meets should know about October First up annual Cape Cod affair Preliminary info has set October fifth sixth E Sandwich High School E Sandwich Massachusetts meet has moved around bit over years has operating annually since 1985 recall Anyway full particulars can Charlie Sylvia CS Flight Systems 31 Perry St Middleboro Massachusetts 02346 October fifth brings Fifth Annual Electric Fun Fly October sixth brings Second Annual Texas Enduro sponsored Dallas Electric Aircraft Flyers DEAF CD Frank Korman can reach him 5834 Goodwin Dallas Texas 75206 Tel 214/821-0393 Frank tells Fun Fly open Electric aircraft trophies smallest longest flight best multi-motor impressive aerobatic addition will drawings wide variety goodies Enduro whole nuther story details involved want request mailer thing will tell youyoull need team participate Now youre curious get letter off Frank October 19th 20th brings us Annual Gulf States Electric Fly-In sponsored Tammany Aero Club held club field Goodbee Louisana mailer available Ben Mathews 101 Mulberry Metairie 32 Model Aviation Electrics Bob Kopski 25 West End Dr Lansdale PA 19446 beautiful Graupner Elndecker right off cover July 91 Model Airplane News Built Clyde Geist Levitown Long island Clyde large active SEFLI contingent Lehigh Valley Pennsylvania meat June Power Speed 600 belt reducer eight cells Prop 11 x 7 up 60 oz dope finish intent gentleman 74-year-old reader Ray Chamberlain Scott City Kansas newly completed Telemaster 40 Plane weighs 6 lb 8 oz 40 cobalt direct 10 x 6 eighteen 1800 SR cells Power control via Jomar SM-4 Ray likes ROG just cruise skiessays plane flies just great way Ray flies off roadway outside townvery little traffic interrupt enjoyment Something old something newthe marriage OT toasys Ace icrorro transmitter Midwests now Vintage Esquire Fifties plane carries re-encoder Mighty MidgetlGalloping Ghost pulse proportional control systemnot unlike decades past Re-encoder published July VRCS Newsletter Esquire 54 oz 05 geared eight 1200s Jomar SM-4 9 x 8 Kyosho prop Louisiana 70005 Tel 504/833-5589 504/366-4511 Boyd OBrien PO Box 7153 Metairie Louisiana 70010 Tel 504/835-5212 will want mailer cause kinds events activities scheduled both days including fun events AMA events plus Cajun cookout swapshop Late news just Westmoreland Electric Soaring Society WESS western Pennsylvania Second Annual Electric Fly will held October 13 field location differs last year sounds like great site full details contact Bob Markle Unit No 3 Sandy Hill Road RD 6 Irwin Pennsylvania 15642 telephone 412/8630103 Im Honorary Member WESS order get out have great time FF Electric picking up following will happy know Dick Gibbs back Flying Models Electric column pursuit subject after lengthy absence Dick friend Bob Afflerback will alternate writing FM column month gentlemen will address different Electric areas interest Along topical area small Electric free flights received interesting mailer/catalog Paul Clark Watts Upa supplier speciality area can get copy Paul PO Box 5702 Hamden Connecticut 06518 Ive interest trying some very small Electrics quite some time Im still gonna itsometime just bought couple Eveready 9V rechargeables sale liberate six 7OmAh cells contain Secee meeeean Motor Noise getting receivers keeps coming up topical area interest Continued page 10 October 1991 33 Rear end bell 05 cobalt has drilled No 43 bit tapped 4-40 thread accept screws sure remove metal chips burrs before reassembling motor Heres what new cobalt looks like out box Single brush-to-brush capacitor rather long leads allows brushes easily removed replaced effec tive approach noise suppression Revised capacitor arrangement reassem bled motor Motor leads removed conve nience clarity will reattached next Note installation solder lug using -in 4-40 ma chine screw lock washer White patch un der center capacitor double stick foam tape keep latter flopping about Approximately hundred people took part special memorial service Johnny Dallas June 19th grand tribute 77 years service others great life around world will miss him Because left memories us recall obviously will forgotten stories jokes will told again again Hell like always enjoyed getting extra laugh old gag several told service Johnny left friends smiles facesa fitting end life left us anotherE Im always happy pass along info may helpful regard month repeat old lesson just got graduate refresher course As result recent interest Electrifying Vintage designs came face face monster problemthat keeping infamous Mighty Midget motor its brush noise clobbering receiver Now doesnt matter know care what Mighty Midget actuator 50s Just accept experience heck noise generator can tell heck struggle noise problem produced Vintage Esquire solved process rediscovered poignant way value properly utilized capacitors brushes As part solution problem MM motor/actuator modified essentially wrapping its plastic housing shield effect put two-piece brass strap way around motor housing installed three capacitors brush brush brush same solder point strap equidistant close brush capacitors used 0001 uFd disc ceramics Radio Shack part number 272-126 made everything work Meaning went just several feet range completely flyable range Nothing short straps caps would allow thisand tried sorts things including inductive networks etc Now lessen new said sort thing has mentioned before other columns Its also interesting European motor suppliers routinely use such capacitor networks motors course flight power system motors plasticthey already have housing made metal So need capacitorsproperly used somehow time either grew lax paid less attention whateverprimarily because planes fly perfectly OK Now subtle significant enlightenment occurs Ive flying Senior Skyvolt over year great plane Yeh Im biased have set up touchy ie controls sensitive plane very responsive has cobalt 40 18 cells plane flies very well its glitchy Ive changed receivers Ive changed transmitters No luck Im sure its speed control sensitivity serve magnify conditionwhereas slower less responsive model would quite bad its glitchyits glitchy special waya way some may experiencing spots both club field ie ground air plane always glitches can taxi right glitchevery timeat certain spot can fly right glitchat certain repeatable spots airevery time glitch zones relatively closeno range problem herethe radio has vastly range always felt glitch zones merely locations signal nulls due signal multipath effect whateverthe sort thing can cause car radio fade briefly few feet car motion come right back up full strength very likely case club field its surrounded steel structureslots places transmitted signals reflect off recombine adversely producing locations signal distortion total signal nulls Ive pretty much accepted 110 Model Aviation RC Electrics/Kopski Continued page 33 SAFE FLYING IS NO ACCIDENT as a given have live reflecting began appreciate obvious signal nulls small sized physical dimension may beare equivalent plane flying very great distanceie flying out range Under conditions no signal receiver AGC relaxes receiver goes full sensitivity Any noiseon board now stands best chance getting has no signal compete witheven though plane may oaly several tens feet away Now true test quality noise suppression motor both radiated conducted brush noise have open shot receiver signal nulls put magnifying glass true performance total Electric installation respect motor noise case speed controls opto-coupling should take care conducted part potential interference Conducted interference follows wires between motor receiver via speed control example Controls having optical coupling have no direct electrical connection between receiver system power system what about radiated part through-the-air partlike radio signal motor receiver Youre familiar radio static household vacuum cleaner electric drill right Same thing folks After Mighty Midget experience began wonder lot about Could actually sufficient brush noise signal faded briefly through null zones noise present sufficient make receiver become erratic could hardly wait pull 40 find out removed single brush-to-brush capacitor supplied original equipment motor installed three Radio Shack 0001 ceramic disks Presto Super Success Ive tried dozens times find favorite glitch holesboth taxiing flightbut effect gone AndI can tell Im lot relaxed flying plane now did another motoran 05 same results Im totally convinced Ive properly assessed problem solved sounds like something youre experiencing take look photos see installed capacitors photos happen 05 cobalt installation very same size What motor size anyway course choose may void applicable warranties Also brush replacement becomes bit difficult since caps have unsoldered before brushes can pulled outbut can have hundreds flights before becomes necessaryso doesnt really matter 5008 SAND BEACH RD / WICHITA FALLS TX 76310 NOR-RAY PRODUCTS INC 817 692 4475 EXHAUST SYSTEMS STOCK OR CUSTOM MADE ST -- SACHS A&M -- OS BGX1 QUADRA -- ZENOAH -- OPS MACHiNED FROM BARSTOCIC DESIG1ED TO FIT INSIDE TIGHT COWLS CALL US FOR YOUR SPECIAL EXHAUST NEEDS CUSTOM VACUUM FORMING CANOPIES -- COWLS -- WHEELPANTS NO JOB TOO BIG OR TOO SMALL Designed Modeler Modelers Cuts Both Sides Same Time Easily Cuts Straight & Tapered Wing Panels Available 30 40 50 60 Still Only $9650 $3OO 5&H Requ1W~ V Power Supply $6250 400 5&H Visa-Mastercard Video Available Send $2 information fine products HANDS OFF CUT TWO Installing capacitors involves disassembly motor hole can drilled tapped rear end bell used permit solder lug screwed placean important step Its easy dojust remove brushes remove case through-bolts remove rear end bell Watch little washers armature shaftthey have tendency slip off get lost Drill No 43 hole shown tap 4-40 tap clean metal fragments out end bell re-assemble motor install solder lug shown reinstall brushes Remove OEM capacitor add new capacitors shown Done Folks winner Again re-discoverybut real eye-opening have acknowledge Europeans really know stuffi noise subject use chokes three speed-control leads go receiver described way back 12/89 continues prove itself invaluable modelers chokesAce No LLlO6impede undesired communication RF frequencies between receiver power systems thus reduce motor noise problemespecially speed controls optically coupled Recently benefit showed up surprising wayspecifically speed control opto-coupler As October 1991 111 best could determine particular control good isolation because opto-couplerjust could hadand showed up think opto coupler doing its basic job due nature physical assembly circuit board sufficient capacitance across opto-coupler pins associated wiring reduce its effectiveness effect conduction path broken appeared radiated path right opto-coupler chokes made noticeable improvement case too Folksdig out back issue see technique wont help have kind motor noise problem Its simple low cost worth try summary between optical coupling chokes speed control/receiver leads good motor capacitor installation motor noise problems should fully controllable Incidentally chokes suggestion has proven useful Im planning update re-run technique some upcoming issue Some Ooops crept July August columns July very minor missing pen strokeBoth sets switch contacts wired parallelthis implicit text notation wiring drawing actual sketch August phototop center page 40 upside-down Rotate minds eye make caption make sense Ohfor perfection us some us seem feel have ads Closing thought Lest forget fun what hobby No No less unless youre hobby business making living whole part providing hobby goodies others enjoy fun still fundamental what no matter what favorite model type no matter what style flying No matter what abilities limitations no matter what resources please resist temptation knock fellow modeler because model flying rnrn u QUALITY FIBERGLASS* FRENCH TR-260 * -Stmke EngineA. KITS II 416 587-3610I TR-260* SPAN71 AREA858sq i ENG 90-120 4 CYCLE K WT APPROX 75-8 5 LBIT FEATURES $18499 USLIGHTWEIGHT FIBERGLASS FUSELAGE COWL CANOPY AND ORDER BY PHONE 7 DAYS WEEKWHEEL PANTS BALSA COVERED FOAM WING WITH L E-TE IN PLACE AND SANDED SELECTED BALSA 416 5204192CUT STAB RUDDER ELEVATORS & AILERONS T6 ALUMINUM IADD $1500 postageLANDING GEARS HARDWARE AND INSTRUCTIONSInfo $200 QUADR@TECHFax 416 283-6538ASose 2 weeks deFeesy 3148 KINGSTON RD STE 202 BOX 158 SCARBOROUGH ONT MiM 1P4 CANADA interests may differ yours Fun excitement satisfaction etc mean different things different people Different strokes say right Please enclose SASE correspondence desire response Happy quiet safe Electric flying everyone responding advertisers mention read about Model Aviation tched ior TOP son rribrito AIrplanAMarine 158 FUELS 158 GLOW PLUGS 9 Blends4 Choices Matched Finish System BEST APPEARANCE K&B FIBERGLASS CLOTH 118 SUPER POXY RESIN Isbn K&B SUPER POSY PRIMER conco P0ev tSINT 112 Model Aviation ADAPTOR ThROW-A-WAY YOUR COUETS CHUCK& WRENCH USE OUR OTO OR &HUcK DREMEL POWER TOOLS RUNS 100% TRUE & CONCENTRIC AT FULL RPM NO501 ADAPTOR ESS CHUCK $1895 DREMEL 850395 DO NOT NEED ADAPTOR TO USE KEYLESS CHUCI STEEL SAW AND ARBOR HARDENED GROUND & POUSHED STEEL USED FOR CUrliNG PLASTIC WOOD SOFT METALS LEXAN PLEXIGLASS & ETC AVAILABLE IN 006 008 010 012 014 016 018 020023 025 NO 502 028 032 THICKNESS 1 OLflSIDE DIAMETER @ $875 EA ARBOR$600 NO 503 014 X 114 SAW $600 OUR SAWS ONLY WORK WITH OUR ARBOR MICRO SELF-STARTING TORCH No nAAd flint matches Jest press Piezo Self-Starting batton micro size adiantahie flame barns 2370 sp 3 hours Operates staodard cigarette gliter bafane refillable Taok comforlahly palm yoor hand aed made high-impact raSher allows safe non sup comfortable grip Sapplied can botane MT770 Blow Torch$3800 Iwitti can butanel MT771 Butane 5 ocsean EASTERN TOOL& SUPPLY CO 149 GRAND ST NYC NY 10013 WRITE FOR CATALOG$300 ORDERS 212-925-1006 WHEN ORDERING PPD ADO $300 OFFICE 212-226-3749 COD ADD $500 FAX212-925-1010
Edition: Model Aviation - 1991/10
Page Numbers: 32, 33, 110, 111, 112
THIS MONTHS TOPICS 1 Electric Connection Seivice 2 Electric Meets 3 FF Electric 4 Motor Noise 5 Errata 6 Closing Thought THE ELECTRIC CONNECTION Service opens months column two modelers looking find others area Electrically minded Jim Fox 838A Ronda Sevilla Laguna Hills California 92653 Tel 714/7681635 Jim getting back RC after five year layoff says column has sparked interest Electric contact Jim tell im Bob sent ya Next Bob Botha wrote tell recent relocation address below find no quiet flying vicinity Bob has made arrangements local sod farmer great field Electrics sailplanes has asked invite anyone interested area contact him 1739 Colette Drive N Mankato Minnesota 56003 Tel 507/345-1832 Humxninm-I think feel another club making four Electric meets should know about October First up annual Cape Cod affair Preliminary info has set October fifth sixth E Sandwich High School E Sandwich Massachusetts meet has moved around bit over years has operating annually since 1985 recall Anyway full particulars can Charlie Sylvia CS Flight Systems 31 Perry St Middleboro Massachusetts 02346 October fifth brings Fifth Annual Electric Fun Fly October sixth brings Second Annual Texas Enduro sponsored Dallas Electric Aircraft Flyers DEAF CD Frank Korman can reach him 5834 Goodwin Dallas Texas 75206 Tel 214/821-0393 Frank tells Fun Fly open Electric aircraft trophies smallest longest flight best multi-motor impressive aerobatic addition will drawings wide variety goodies Enduro whole nuther story details involved want request mailer thing will tell youyoull need team participate Now youre curious get letter off Frank October 19th 20th brings us Annual Gulf States Electric Fly-In sponsored Tammany Aero Club held club field Goodbee Louisana mailer available Ben Mathews 101 Mulberry Metairie 32 Model Aviation Electrics Bob Kopski 25 West End Dr Lansdale PA 19446 beautiful Graupner Elndecker right off cover July 91 Model Airplane News Built Clyde Geist Levitown Long island Clyde large active SEFLI contingent Lehigh Valley Pennsylvania meat June Power Speed 600 belt reducer eight cells Prop 11 x 7 up 60 oz dope finish intent gentleman 74-year-old reader Ray Chamberlain Scott City Kansas newly completed Telemaster 40 Plane weighs 6 lb 8 oz 40 cobalt direct 10 x 6 eighteen 1800 SR cells Power control via Jomar SM-4 Ray likes ROG just cruise skiessays plane flies just great way Ray flies off roadway outside townvery little traffic interrupt enjoyment Something old something newthe marriage OT toasys Ace icrorro transmitter Midwests now Vintage Esquire Fifties plane carries re-encoder Mighty MidgetlGalloping Ghost pulse proportional control systemnot unlike decades past Re-encoder published July VRCS Newsletter Esquire 54 oz 05 geared eight 1200s Jomar SM-4 9 x 8 Kyosho prop Louisiana 70005 Tel 504/833-5589 504/366-4511 Boyd OBrien PO Box 7153 Metairie Louisiana 70010 Tel 504/835-5212 will want mailer cause kinds events activities scheduled both days including fun events AMA events plus Cajun cookout swapshop Late news just Westmoreland Electric Soaring Society WESS western Pennsylvania Second Annual Electric Fly will held October 13 field location differs last year sounds like great site full details contact Bob Markle Unit No 3 Sandy Hill Road RD 6 Irwin Pennsylvania 15642 telephone 412/8630103 Im Honorary Member WESS order get out have great time FF Electric picking up following will happy know Dick Gibbs back Flying Models Electric column pursuit subject after lengthy absence Dick friend Bob Afflerback will alternate writing FM column month gentlemen will address different Electric areas interest Along topical area small Electric free flights received interesting mailer/catalog Paul Clark Watts Upa supplier speciality area can get copy Paul PO Box 5702 Hamden Connecticut 06518 Ive interest trying some very small Electrics quite some time Im still gonna itsometime just bought couple Eveready 9V rechargeables sale liberate six 7OmAh cells contain Secee meeeean Motor Noise getting receivers keeps coming up topical area interest Continued page 10 October 1991 33 Rear end bell 05 cobalt has drilled No 43 bit tapped 4-40 thread accept screws sure remove metal chips burrs before reassembling motor Heres what new cobalt looks like out box Single brush-to-brush capacitor rather long leads allows brushes easily removed replaced effec tive approach noise suppression Revised capacitor arrangement reassem bled motor Motor leads removed conve nience clarity will reattached next Note installation solder lug using -in 4-40 ma chine screw lock washer White patch un der center capacitor double stick foam tape keep latter flopping about Approximately hundred people took part special memorial service Johnny Dallas June 19th grand tribute 77 years service others great life around world will miss him Because left memories us recall obviously will forgotten stories jokes will told again again Hell like always enjoyed getting extra laugh old gag several told service Johnny left friends smiles facesa fitting end life left us anotherE Im always happy pass along info may helpful regard month repeat old lesson just got graduate refresher course As result recent interest Electrifying Vintage designs came face face monster problemthat keeping infamous Mighty Midget motor its brush noise clobbering receiver Now doesnt matter know care what Mighty Midget actuator 50s Just accept experience heck noise generator can tell heck struggle noise problem produced Vintage Esquire solved process rediscovered poignant way value properly utilized capacitors brushes As part solution problem MM motor/actuator modified essentially wrapping its plastic housing shield effect put two-piece brass strap way around motor housing installed three capacitors brush brush brush same solder point strap equidistant close brush capacitors used 0001 uFd disc ceramics Radio Shack part number 272-126 made everything work Meaning went just several feet range completely flyable range Nothing short straps caps would allow thisand tried sorts things including inductive networks etc Now lessen new said sort thing has mentioned before other columns Its also interesting European motor suppliers routinely use such capacitor networks motors course flight power system motors plasticthey already have housing made metal So need capacitorsproperly used somehow time either grew lax paid less attention whateverprimarily because planes fly perfectly OK Now subtle significant enlightenment occurs Ive flying Senior Skyvolt over year great plane Yeh Im biased have set up touchy ie controls sensitive plane very responsive has cobalt 40 18 cells plane flies very well its glitchy Ive changed receivers Ive changed transmitters No luck Im sure its speed control sensitivity serve magnify conditionwhereas slower less responsive model would quite bad its glitchyits glitchy special waya way some may experiencing spots both club field ie ground air plane always glitches can taxi right glitchevery timeat certain spot can fly right glitchat certain repeatable spots airevery time glitch zones relatively closeno range problem herethe radio has vastly range always felt glitch zones merely locations signal nulls due signal multipath effect whateverthe sort thing can cause car radio fade briefly few feet car motion come right back up full strength very likely case club field its surrounded steel structureslots places transmitted signals reflect off recombine adversely producing locations signal distortion total signal nulls Ive pretty much accepted 110 Model Aviation RC Electrics/Kopski Continued page 33 SAFE FLYING IS NO ACCIDENT as a given have live reflecting began appreciate obvious signal nulls small sized physical dimension may beare equivalent plane flying very great distanceie flying out range Under conditions no signal receiver AGC relaxes receiver goes full sensitivity Any noiseon board now stands best chance getting has no signal compete witheven though plane may oaly several tens feet away Now true test quality noise suppression motor both radiated conducted brush noise have open shot receiver signal nulls put magnifying glass true performance total Electric installation respect motor noise case speed controls opto-coupling should take care conducted part potential interference Conducted interference follows wires between motor receiver via speed control example Controls having optical coupling have no direct electrical connection between receiver system power system what about radiated part through-the-air partlike radio signal motor receiver Youre familiar radio static household vacuum cleaner electric drill right Same thing folks After Mighty Midget experience began wonder lot about Could actually sufficient brush noise signal faded briefly through null zones noise present sufficient make receiver become erratic could hardly wait pull 40 find out removed single brush-to-brush capacitor supplied original equipment motor installed three Radio Shack 0001 ceramic disks Presto Super Success Ive tried dozens times find favorite glitch holesboth taxiing flightbut effect gone AndI can tell Im lot relaxed flying plane now did another motoran 05 same results Im totally convinced Ive properly assessed problem solved sounds like something youre experiencing take look photos see installed capacitors photos happen 05 cobalt installation very same size What motor size anyway course choose may void applicable warranties Also brush replacement becomes bit difficult since caps have unsoldered before brushes can pulled outbut can have hundreds flights before becomes necessaryso doesnt really matter 5008 SAND BEACH RD / WICHITA FALLS TX 76310 NOR-RAY PRODUCTS INC 817 692 4475 EXHAUST SYSTEMS STOCK OR CUSTOM MADE ST -- SACHS A&M -- OS BGX1 QUADRA -- ZENOAH -- OPS MACHiNED FROM BARSTOCIC DESIG1ED TO FIT INSIDE TIGHT COWLS CALL US FOR YOUR SPECIAL EXHAUST NEEDS CUSTOM VACUUM FORMING CANOPIES -- COWLS -- WHEELPANTS NO JOB TOO BIG OR TOO SMALL Designed Modeler Modelers Cuts Both Sides Same Time Easily Cuts Straight & Tapered Wing Panels Available 30 40 50 60 Still Only $9650 $3OO 5&H Requ1W~ V Power Supply $6250 400 5&H Visa-Mastercard Video Available Send $2 information fine products HANDS OFF CUT TWO Installing capacitors involves disassembly motor hole can drilled tapped rear end bell used permit solder lug screwed placean important step Its easy dojust remove brushes remove case through-bolts remove rear end bell Watch little washers armature shaftthey have tendency slip off get lost Drill No 43 hole shown tap 4-40 tap clean metal fragments out end bell re-assemble motor install solder lug shown reinstall brushes Remove OEM capacitor add new capacitors shown Done Folks winner Again re-discoverybut real eye-opening have acknowledge Europeans really know stuffi noise subject use chokes three speed-control leads go receiver described way back 12/89 continues prove itself invaluable modelers chokesAce No LLlO6impede undesired communication RF frequencies between receiver power systems thus reduce motor noise problemespecially speed controls optically coupled Recently benefit showed up surprising wayspecifically speed control opto-coupler As October 1991 111 best could determine particular control good isolation because opto-couplerjust could hadand showed up think opto coupler doing its basic job due nature physical assembly circuit board sufficient capacitance across opto-coupler pins associated wiring reduce its effectiveness effect conduction path broken appeared radiated path right opto-coupler chokes made noticeable improvement case too Folksdig out back issue see technique wont help have kind motor noise problem Its simple low cost worth try summary between optical coupling chokes speed control/receiver leads good motor capacitor installation motor noise problems should fully controllable Incidentally chokes suggestion has proven useful Im planning update re-run technique some upcoming issue Some Ooops crept July August columns July very minor missing pen strokeBoth sets switch contacts wired parallelthis implicit text notation wiring drawing actual sketch August phototop center page 40 upside-down Rotate minds eye make caption make sense Ohfor perfection us some us seem feel have ads Closing thought Lest forget fun what hobby No No less unless youre hobby business making living whole part providing hobby goodies others enjoy fun still fundamental what no matter what favorite model type no matter what style flying No matter what abilities limitations no matter what resources please resist temptation knock fellow modeler because model flying rnrn u QUALITY FIBERGLASS* FRENCH TR-260 * -Stmke EngineA. KITS II 416 587-3610I TR-260* SPAN71 AREA858sq i ENG 90-120 4 CYCLE K WT APPROX 75-8 5 LBIT FEATURES $18499 USLIGHTWEIGHT FIBERGLASS FUSELAGE COWL CANOPY AND ORDER BY PHONE 7 DAYS WEEKWHEEL PANTS BALSA COVERED FOAM WING WITH L E-TE IN PLACE AND SANDED SELECTED BALSA 416 5204192CUT STAB RUDDER ELEVATORS & AILERONS T6 ALUMINUM IADD $1500 postageLANDING GEARS HARDWARE AND INSTRUCTIONSInfo $200 QUADR@TECHFax 416 283-6538ASose 2 weeks deFeesy 3148 KINGSTON RD STE 202 BOX 158 SCARBOROUGH ONT MiM 1P4 CANADA interests may differ yours Fun excitement satisfaction etc mean different things different people Different strokes say right Please enclose SASE correspondence desire response Happy quiet safe Electric flying everyone responding advertisers mention read about Model Aviation tched ior TOP son rribrito AIrplanAMarine 158 FUELS 158 GLOW PLUGS 9 Blends4 Choices Matched Finish System BEST APPEARANCE K&B FIBERGLASS CLOTH 118 SUPER POXY RESIN Isbn K&B SUPER POSY PRIMER conco P0ev tSINT 112 Model Aviation ADAPTOR ThROW-A-WAY YOUR COUETS CHUCK& WRENCH USE OUR OTO OR &HUcK DREMEL POWER TOOLS RUNS 100% TRUE & CONCENTRIC AT FULL RPM NO501 ADAPTOR ESS CHUCK $1895 DREMEL 850395 DO NOT NEED ADAPTOR TO USE KEYLESS CHUCI STEEL SAW AND ARBOR HARDENED GROUND & POUSHED STEEL USED FOR CUrliNG PLASTIC WOOD SOFT METALS LEXAN PLEXIGLASS & ETC AVAILABLE IN 006 008 010 012 014 016 018 020023 025 NO 502 028 032 THICKNESS 1 OLflSIDE DIAMETER @ $875 EA ARBOR$600 NO 503 014 X 114 SAW $600 OUR SAWS ONLY WORK WITH OUR ARBOR MICRO SELF-STARTING TORCH No nAAd flint matches Jest press Piezo Self-Starting batton micro size adiantahie flame barns 2370 sp 3 hours Operates staodard cigarette gliter bafane refillable Taok comforlahly palm yoor hand aed made high-impact raSher allows safe non sup comfortable grip Sapplied can botane MT770 Blow Torch$3800 Iwitti can butanel MT771 Butane 5 ocsean EASTERN TOOL& SUPPLY CO 149 GRAND ST NYC NY 10013 WRITE FOR CATALOG$300 ORDERS 212-925-1006 WHEN ORDERING PPD ADO $300 OFFICE 212-226-3749 COD ADD $500 FAX212-925-1010
Edition: Model Aviation - 1991/10
Page Numbers: 32, 33, 110, 111, 112
THIS MONTHS TOPICS 1 Electric Connection Seivice 2 Electric Meets 3 FF Electric 4 Motor Noise 5 Errata 6 Closing Thought THE ELECTRIC CONNECTION Service opens months column two modelers looking find others area Electrically minded Jim Fox 838A Ronda Sevilla Laguna Hills California 92653 Tel 714/7681635 Jim getting back RC after five year layoff says column has sparked interest Electric contact Jim tell im Bob sent ya Next Bob Botha wrote tell recent relocation address below find no quiet flying vicinity Bob has made arrangements local sod farmer great field Electrics sailplanes has asked invite anyone interested area contact him 1739 Colette Drive N Mankato Minnesota 56003 Tel 507/345-1832 Humxninm-I think feel another club making four Electric meets should know about October First up annual Cape Cod affair Preliminary info has set October fifth sixth E Sandwich High School E Sandwich Massachusetts meet has moved around bit over years has operating annually since 1985 recall Anyway full particulars can Charlie Sylvia CS Flight Systems 31 Perry St Middleboro Massachusetts 02346 October fifth brings Fifth Annual Electric Fun Fly October sixth brings Second Annual Texas Enduro sponsored Dallas Electric Aircraft Flyers DEAF CD Frank Korman can reach him 5834 Goodwin Dallas Texas 75206 Tel 214/821-0393 Frank tells Fun Fly open Electric aircraft trophies smallest longest flight best multi-motor impressive aerobatic addition will drawings wide variety goodies Enduro whole nuther story details involved want request mailer thing will tell youyoull need team participate Now youre curious get letter off Frank October 19th 20th brings us Annual Gulf States Electric Fly-In sponsored Tammany Aero Club held club field Goodbee Louisana mailer available Ben Mathews 101 Mulberry Metairie 32 Model Aviation Electrics Bob Kopski 25 West End Dr Lansdale PA 19446 beautiful Graupner Elndecker right off cover July 91 Model Airplane News Built Clyde Geist Levitown Long island Clyde large active SEFLI contingent Lehigh Valley Pennsylvania meat June Power Speed 600 belt reducer eight cells Prop 11 x 7 up 60 oz dope finish intent gentleman 74-year-old reader Ray Chamberlain Scott City Kansas newly completed Telemaster 40 Plane weighs 6 lb 8 oz 40 cobalt direct 10 x 6 eighteen 1800 SR cells Power control via Jomar SM-4 Ray likes ROG just cruise skiessays plane flies just great way Ray flies off roadway outside townvery little traffic interrupt enjoyment Something old something newthe marriage OT toasys Ace icrorro transmitter Midwests now Vintage Esquire Fifties plane carries re-encoder Mighty MidgetlGalloping Ghost pulse proportional control systemnot unlike decades past Re-encoder published July VRCS Newsletter Esquire 54 oz 05 geared eight 1200s Jomar SM-4 9 x 8 Kyosho prop Louisiana 70005 Tel 504/833-5589 504/366-4511 Boyd OBrien PO Box 7153 Metairie Louisiana 70010 Tel 504/835-5212 will want mailer cause kinds events activities scheduled both days including fun events AMA events plus Cajun cookout swapshop Late news just Westmoreland Electric Soaring Society WESS western Pennsylvania Second Annual Electric Fly will held October 13 field location differs last year sounds like great site full details contact Bob Markle Unit No 3 Sandy Hill Road RD 6 Irwin Pennsylvania 15642 telephone 412/8630103 Im Honorary Member WESS order get out have great time FF Electric picking up following will happy know Dick Gibbs back Flying Models Electric column pursuit subject after lengthy absence Dick friend Bob Afflerback will alternate writing FM column month gentlemen will address different Electric areas interest Along topical area small Electric free flights received interesting mailer/catalog Paul Clark Watts Upa supplier speciality area can get copy Paul PO Box 5702 Hamden Connecticut 06518 Ive interest trying some very small Electrics quite some time Im still gonna itsometime just bought couple Eveready 9V rechargeables sale liberate six 7OmAh cells contain Secee meeeean Motor Noise getting receivers keeps coming up topical area interest Continued page 10 October 1991 33 Rear end bell 05 cobalt has drilled No 43 bit tapped 4-40 thread accept screws sure remove metal chips burrs before reassembling motor Heres what new cobalt looks like out box Single brush-to-brush capacitor rather long leads allows brushes easily removed replaced effec tive approach noise suppression Revised capacitor arrangement reassem bled motor Motor leads removed conve nience clarity will reattached next Note installation solder lug using -in 4-40 ma chine screw lock washer White patch un der center capacitor double stick foam tape keep latter flopping about Approximately hundred people took part special memorial service Johnny Dallas June 19th grand tribute 77 years service others great life around world will miss him Because left memories us recall obviously will forgotten stories jokes will told again again Hell like always enjoyed getting extra laugh old gag several told service Johnny left friends smiles facesa fitting end life left us anotherE Im always happy pass along info may helpful regard month repeat old lesson just got graduate refresher course As result recent interest Electrifying Vintage designs came face face monster problemthat keeping infamous Mighty Midget motor its brush noise clobbering receiver Now doesnt matter know care what Mighty Midget actuator 50s Just accept experience heck noise generator can tell heck struggle noise problem produced Vintage Esquire solved process rediscovered poignant way value properly utilized capacitors brushes As part solution problem MM motor/actuator modified essentially wrapping its plastic housing shield effect put two-piece brass strap way around motor housing installed three capacitors brush brush brush same solder point strap equidistant close brush capacitors used 0001 uFd disc ceramics Radio Shack part number 272-126 made everything work Meaning went just several feet range completely flyable range Nothing short straps caps would allow thisand tried sorts things including inductive networks etc Now lessen new said sort thing has mentioned before other columns Its also interesting European motor suppliers routinely use such capacitor networks motors course flight power system motors plasticthey already have housing made metal So need capacitorsproperly used somehow time either grew lax paid less attention whateverprimarily because planes fly perfectly OK Now subtle significant enlightenment occurs Ive flying Senior Skyvolt over year great plane Yeh Im biased have set up touchy ie controls sensitive plane very responsive has cobalt 40 18 cells plane flies very well its glitchy Ive changed receivers Ive changed transmitters No luck Im sure its speed control sensitivity serve magnify conditionwhereas slower less responsive model would quite bad its glitchyits glitchy special waya way some may experiencing spots both club field ie ground air plane always glitches can taxi right glitchevery timeat certain spot can fly right glitchat certain repeatable spots airevery time glitch zones relatively closeno range problem herethe radio has vastly range always felt glitch zones merely locations signal nulls due signal multipath effect whateverthe sort thing can cause car radio fade briefly few feet car motion come right back up full strength very likely case club field its surrounded steel structureslots places transmitted signals reflect off recombine adversely producing locations signal distortion total signal nulls Ive pretty much accepted 110 Model Aviation RC Electrics/Kopski Continued page 33 SAFE FLYING IS NO ACCIDENT as a given have live reflecting began appreciate obvious signal nulls small sized physical dimension may beare equivalent plane flying very great distanceie flying out range Under conditions no signal receiver AGC relaxes receiver goes full sensitivity Any noiseon board now stands best chance getting has no signal compete witheven though plane may oaly several tens feet away Now true test quality noise suppression motor both radiated conducted brush noise have open shot receiver signal nulls put magnifying glass true performance total Electric installation respect motor noise case speed controls opto-coupling should take care conducted part potential interference Conducted interference follows wires between motor receiver via speed control example Controls having optical coupling have no direct electrical connection between receiver system power system what about radiated part through-the-air partlike radio signal motor receiver Youre familiar radio static household vacuum cleaner electric drill right Same thing folks After Mighty Midget experience began wonder lot about Could actually sufficient brush noise signal faded briefly through null zones noise present sufficient make receiver become erratic could hardly wait pull 40 find out removed single brush-to-brush capacitor supplied original equipment motor installed three Radio Shack 0001 ceramic disks Presto Super Success Ive tried dozens times find favorite glitch holesboth taxiing flightbut effect gone AndI can tell Im lot relaxed flying plane now did another motoran 05 same results Im totally convinced Ive properly assessed problem solved sounds like something youre experiencing take look photos see installed capacitors photos happen 05 cobalt installation very same size What motor size anyway course choose may void applicable warranties Also brush replacement becomes bit difficult since caps have unsoldered before brushes can pulled outbut can have hundreds flights before becomes necessaryso doesnt really matter 5008 SAND BEACH RD / WICHITA FALLS TX 76310 NOR-RAY PRODUCTS INC 817 692 4475 EXHAUST SYSTEMS STOCK OR CUSTOM MADE ST -- SACHS A&M -- OS BGX1 QUADRA -- ZENOAH -- OPS MACHiNED FROM BARSTOCIC DESIG1ED TO FIT INSIDE TIGHT COWLS CALL US FOR YOUR SPECIAL EXHAUST NEEDS CUSTOM VACUUM FORMING CANOPIES -- COWLS -- WHEELPANTS NO JOB TOO BIG OR TOO SMALL Designed Modeler Modelers Cuts Both Sides Same Time Easily Cuts Straight & Tapered Wing Panels Available 30 40 50 60 Still Only $9650 $3OO 5&H Requ1W~ V Power Supply $6250 400 5&H Visa-Mastercard Video Available Send $2 information fine products HANDS OFF CUT TWO Installing capacitors involves disassembly motor hole can drilled tapped rear end bell used permit solder lug screwed placean important step Its easy dojust remove brushes remove case through-bolts remove rear end bell Watch little washers armature shaftthey have tendency slip off get lost Drill No 43 hole shown tap 4-40 tap clean metal fragments out end bell re-assemble motor install solder lug shown reinstall brushes Remove OEM capacitor add new capacitors shown Done Folks winner Again re-discoverybut real eye-opening have acknowledge Europeans really know stuffi noise subject use chokes three speed-control leads go receiver described way back 12/89 continues prove itself invaluable modelers chokesAce No LLlO6impede undesired communication RF frequencies between receiver power systems thus reduce motor noise problemespecially speed controls optically coupled Recently benefit showed up surprising wayspecifically speed control opto-coupler As October 1991 111 best could determine particular control good isolation because opto-couplerjust could hadand showed up think opto coupler doing its basic job due nature physical assembly circuit board sufficient capacitance across opto-coupler pins associated wiring reduce its effectiveness effect conduction path broken appeared radiated path right opto-coupler chokes made noticeable improvement case too Folksdig out back issue see technique wont help have kind motor noise problem Its simple low cost worth try summary between optical coupling chokes speed control/receiver leads good motor capacitor installation motor noise problems should fully controllable Incidentally chokes suggestion has proven useful Im planning update re-run technique some upcoming issue Some Ooops crept July August columns July very minor missing pen strokeBoth sets switch contacts wired parallelthis implicit text notation wiring drawing actual sketch August phototop center page 40 upside-down Rotate minds eye make caption make sense Ohfor perfection us some us seem feel have ads Closing thought Lest forget fun what hobby No No less unless youre hobby business making living whole part providing hobby goodies others enjoy fun still fundamental what no matter what favorite model type no matter what style flying No matter what abilities limitations no matter what resources please resist temptation knock fellow modeler because model flying rnrn u QUALITY FIBERGLASS* FRENCH TR-260 * -Stmke EngineA. KITS II 416 587-3610I TR-260* SPAN71 AREA858sq i ENG 90-120 4 CYCLE K WT APPROX 75-8 5 LBIT FEATURES $18499 USLIGHTWEIGHT FIBERGLASS FUSELAGE COWL CANOPY AND ORDER BY PHONE 7 DAYS WEEKWHEEL PANTS BALSA COVERED FOAM WING WITH L E-TE IN PLACE AND SANDED SELECTED BALSA 416 5204192CUT STAB RUDDER ELEVATORS & AILERONS T6 ALUMINUM IADD $1500 postageLANDING GEARS HARDWARE AND INSTRUCTIONSInfo $200 QUADR@TECHFax 416 283-6538ASose 2 weeks deFeesy 3148 KINGSTON RD STE 202 BOX 158 SCARBOROUGH ONT MiM 1P4 CANADA interests may differ yours Fun excitement satisfaction etc mean different things different people Different strokes say right Please enclose SASE correspondence desire response Happy quiet safe Electric flying everyone responding advertisers mention read about Model Aviation tched ior TOP son rribrito AIrplanAMarine 158 FUELS 158 GLOW PLUGS 9 Blends4 Choices Matched Finish System BEST APPEARANCE K&B FIBERGLASS CLOTH 118 SUPER POXY RESIN Isbn K&B SUPER POSY PRIMER conco P0ev tSINT 112 Model Aviation ADAPTOR ThROW-A-WAY YOUR COUETS CHUCK& WRENCH USE OUR OTO OR &HUcK DREMEL POWER TOOLS RUNS 100% TRUE & CONCENTRIC AT FULL RPM NO501 ADAPTOR ESS CHUCK $1895 DREMEL 850395 DO NOT NEED ADAPTOR TO USE KEYLESS CHUCI STEEL SAW AND ARBOR HARDENED GROUND & POUSHED STEEL USED FOR CUrliNG PLASTIC WOOD SOFT METALS LEXAN PLEXIGLASS & ETC AVAILABLE IN 006 008 010 012 014 016 018 020023 025 NO 502 028 032 THICKNESS 1 OLflSIDE DIAMETER @ $875 EA ARBOR$600 NO 503 014 X 114 SAW $600 OUR SAWS ONLY WORK WITH OUR ARBOR MICRO SELF-STARTING TORCH No nAAd flint matches Jest press Piezo Self-Starting batton micro size adiantahie flame barns 2370 sp 3 hours Operates staodard cigarette gliter bafane refillable Taok comforlahly palm yoor hand aed made high-impact raSher allows safe non sup comfortable grip Sapplied can botane MT770 Blow Torch$3800 Iwitti can butanel MT771 Butane 5 ocsean EASTERN TOOL& SUPPLY CO 149 GRAND ST NYC NY 10013 WRITE FOR CATALOG$300 ORDERS 212-925-1006 WHEN ORDERING PPD ADO $300 OFFICE 212-226-3749 COD ADD $500 FAX212-925-1010
Edition: Model Aviation - 1991/10
Page Numbers: 32, 33, 110, 111, 112
THIS MONTHS TOPICS 1 Electric Connection Seivice 2 Electric Meets 3 FF Electric 4 Motor Noise 5 Errata 6 Closing Thought THE ELECTRIC CONNECTION Service opens months column two modelers looking find others area Electrically minded Jim Fox 838A Ronda Sevilla Laguna Hills California 92653 Tel 714/7681635 Jim getting back RC after five year layoff says column has sparked interest Electric contact Jim tell im Bob sent ya Next Bob Botha wrote tell recent relocation address below find no quiet flying vicinity Bob has made arrangements local sod farmer great field Electrics sailplanes has asked invite anyone interested area contact him 1739 Colette Drive N Mankato Minnesota 56003 Tel 507/345-1832 Humxninm-I think feel another club making four Electric meets should know about October First up annual Cape Cod affair Preliminary info has set October fifth sixth E Sandwich High School E Sandwich Massachusetts meet has moved around bit over years has operating annually since 1985 recall Anyway full particulars can Charlie Sylvia CS Flight Systems 31 Perry St Middleboro Massachusetts 02346 October fifth brings Fifth Annual Electric Fun Fly October sixth brings Second Annual Texas Enduro sponsored Dallas Electric Aircraft Flyers DEAF CD Frank Korman can reach him 5834 Goodwin Dallas Texas 75206 Tel 214/821-0393 Frank tells Fun Fly open Electric aircraft trophies smallest longest flight best multi-motor impressive aerobatic addition will drawings wide variety goodies Enduro whole nuther story details involved want request mailer thing will tell youyoull need team participate Now youre curious get letter off Frank October 19th 20th brings us Annual Gulf States Electric Fly-In sponsored Tammany Aero Club held club field Goodbee Louisana mailer available Ben Mathews 101 Mulberry Metairie 32 Model Aviation Electrics Bob Kopski 25 West End Dr Lansdale PA 19446 beautiful Graupner Elndecker right off cover July 91 Model Airplane News Built Clyde Geist Levitown Long island Clyde large active SEFLI contingent Lehigh Valley Pennsylvania meat June Power Speed 600 belt reducer eight cells Prop 11 x 7 up 60 oz dope finish intent gentleman 74-year-old reader Ray Chamberlain Scott City Kansas newly completed Telemaster 40 Plane weighs 6 lb 8 oz 40 cobalt direct 10 x 6 eighteen 1800 SR cells Power control via Jomar SM-4 Ray likes ROG just cruise skiessays plane flies just great way Ray flies off roadway outside townvery little traffic interrupt enjoyment Something old something newthe marriage OT toasys Ace icrorro transmitter Midwests now Vintage Esquire Fifties plane carries re-encoder Mighty MidgetlGalloping Ghost pulse proportional control systemnot unlike decades past Re-encoder published July VRCS Newsletter Esquire 54 oz 05 geared eight 1200s Jomar SM-4 9 x 8 Kyosho prop Louisiana 70005 Tel 504/833-5589 504/366-4511 Boyd OBrien PO Box 7153 Metairie Louisiana 70010 Tel 504/835-5212 will want mailer cause kinds events activities scheduled both days including fun events AMA events plus Cajun cookout swapshop Late news just Westmoreland Electric Soaring Society WESS western Pennsylvania Second Annual Electric Fly will held October 13 field location differs last year sounds like great site full details contact Bob Markle Unit No 3 Sandy Hill Road RD 6 Irwin Pennsylvania 15642 telephone 412/8630103 Im Honorary Member WESS order get out have great time FF Electric picking up following will happy know Dick Gibbs back Flying Models Electric column pursuit subject after lengthy absence Dick friend Bob Afflerback will alternate writing FM column month gentlemen will address different Electric areas interest Along topical area small Electric free flights received interesting mailer/catalog Paul Clark Watts Upa supplier speciality area can get copy Paul PO Box 5702 Hamden Connecticut 06518 Ive interest trying some very small Electrics quite some time Im still gonna itsometime just bought couple Eveready 9V rechargeables sale liberate six 7OmAh cells contain Secee meeeean Motor Noise getting receivers keeps coming up topical area interest Continued page 10 October 1991 33 Rear end bell 05 cobalt has drilled No 43 bit tapped 4-40 thread accept screws sure remove metal chips burrs before reassembling motor Heres what new cobalt looks like out box Single brush-to-brush capacitor rather long leads allows brushes easily removed replaced effec tive approach noise suppression Revised capacitor arrangement reassem bled motor Motor leads removed conve nience clarity will reattached next Note installation solder lug using -in 4-40 ma chine screw lock washer White patch un der center capacitor double stick foam tape keep latter flopping about Approximately hundred people took part special memorial service Johnny Dallas June 19th grand tribute 77 years service others great life around world will miss him Because left memories us recall obviously will forgotten stories jokes will told again again Hell like always enjoyed getting extra laugh old gag several told service Johnny left friends smiles facesa fitting end life left us anotherE Im always happy pass along info may helpful regard month repeat old lesson just got graduate refresher course As result recent interest Electrifying Vintage designs came face face monster problemthat keeping infamous Mighty Midget motor its brush noise clobbering receiver Now doesnt matter know care what Mighty Midget actuator 50s Just accept experience heck noise generator can tell heck struggle noise problem produced Vintage Esquire solved process rediscovered poignant way value properly utilized capacitors brushes As part solution problem MM motor/actuator modified essentially wrapping its plastic housing shield effect put two-piece brass strap way around motor housing installed three capacitors brush brush brush same solder point strap equidistant close brush capacitors used 0001 uFd disc ceramics Radio Shack part number 272-126 made everything work Meaning went just several feet range completely flyable range Nothing short straps caps would allow thisand tried sorts things including inductive networks etc Now lessen new said sort thing has mentioned before other columns Its also interesting European motor suppliers routinely use such capacitor networks motors course flight power system motors plasticthey already have housing made metal So need capacitorsproperly used somehow time either grew lax paid less attention whateverprimarily because planes fly perfectly OK Now subtle significant enlightenment occurs Ive flying Senior Skyvolt over year great plane Yeh Im biased have set up touchy ie controls sensitive plane very responsive has cobalt 40 18 cells plane flies very well its glitchy Ive changed receivers Ive changed transmitters No luck Im sure its speed control sensitivity serve magnify conditionwhereas slower less responsive model would quite bad its glitchyits glitchy special waya way some may experiencing spots both club field ie ground air plane always glitches can taxi right glitchevery timeat certain spot can fly right glitchat certain repeatable spots airevery time glitch zones relatively closeno range problem herethe radio has vastly range always felt glitch zones merely locations signal nulls due signal multipath effect whateverthe sort thing can cause car radio fade briefly few feet car motion come right back up full strength very likely case club field its surrounded steel structureslots places transmitted signals reflect off recombine adversely producing locations signal distortion total signal nulls Ive pretty much accepted 110 Model Aviation RC Electrics/Kopski Continued page 33 SAFE FLYING IS NO ACCIDENT as a given have live reflecting began appreciate obvious signal nulls small sized physical dimension may beare equivalent plane flying very great distanceie flying out range Under conditions no signal receiver AGC relaxes receiver goes full sensitivity Any noiseon board now stands best chance getting has no signal compete witheven though plane may oaly several tens feet away Now true test quality noise suppression motor both radiated conducted brush noise have open shot receiver signal nulls put magnifying glass true performance total Electric installation respect motor noise case speed controls opto-coupling should take care conducted part potential interference Conducted interference follows wires between motor receiver via speed control example Controls having optical coupling have no direct electrical connection between receiver system power system what about radiated part through-the-air partlike radio signal motor receiver Youre familiar radio static household vacuum cleaner electric drill right Same thing folks After Mighty Midget experience began wonder lot about Could actually sufficient brush noise signal faded briefly through null zones noise present sufficient make receiver become erratic could hardly wait pull 40 find out removed single brush-to-brush capacitor supplied original equipment motor installed three Radio Shack 0001 ceramic disks Presto Super Success Ive tried dozens times find favorite glitch holesboth taxiing flightbut effect gone AndI can tell Im lot relaxed flying plane now did another motoran 05 same results Im totally convinced Ive properly assessed problem solved sounds like something youre experiencing take look photos see installed capacitors photos happen 05 cobalt installation very same size What motor size anyway course choose may void applicable warranties Also brush replacement becomes bit difficult since caps have unsoldered before brushes can pulled outbut can have hundreds flights before becomes necessaryso doesnt really matter 5008 SAND BEACH RD / WICHITA FALLS TX 76310 NOR-RAY PRODUCTS INC 817 692 4475 EXHAUST SYSTEMS STOCK OR CUSTOM MADE ST -- SACHS A&M -- OS BGX1 QUADRA -- ZENOAH -- OPS MACHiNED FROM BARSTOCIC DESIG1ED TO FIT INSIDE TIGHT COWLS CALL US FOR YOUR SPECIAL EXHAUST NEEDS CUSTOM VACUUM FORMING CANOPIES -- COWLS -- WHEELPANTS NO JOB TOO BIG OR TOO SMALL Designed Modeler Modelers Cuts Both Sides Same Time Easily Cuts Straight & Tapered Wing Panels Available 30 40 50 60 Still Only $9650 $3OO 5&H Requ1W~ V Power Supply $6250 400 5&H Visa-Mastercard Video Available Send $2 information fine products HANDS OFF CUT TWO Installing capacitors involves disassembly motor hole can drilled tapped rear end bell used permit solder lug screwed placean important step Its easy dojust remove brushes remove case through-bolts remove rear end bell Watch little washers armature shaftthey have tendency slip off get lost Drill No 43 hole shown tap 4-40 tap clean metal fragments out end bell re-assemble motor install solder lug shown reinstall brushes Remove OEM capacitor add new capacitors shown Done Folks winner Again re-discoverybut real eye-opening have acknowledge Europeans really know stuffi noise subject use chokes three speed-control leads go receiver described way back 12/89 continues prove itself invaluable modelers chokesAce No LLlO6impede undesired communication RF frequencies between receiver power systems thus reduce motor noise problemespecially speed controls optically coupled Recently benefit showed up surprising wayspecifically speed control opto-coupler As October 1991 111 best could determine particular control good isolation because opto-couplerjust could hadand showed up think opto coupler doing its basic job due nature physical assembly circuit board sufficient capacitance across opto-coupler pins associated wiring reduce its effectiveness effect conduction path broken appeared radiated path right opto-coupler chokes made noticeable improvement case too Folksdig out back issue see technique wont help have kind motor noise problem Its simple low cost worth try summary between optical coupling chokes speed control/receiver leads good motor capacitor installation motor noise problems should fully controllable Incidentally chokes suggestion has proven useful Im planning update re-run technique some upcoming issue Some Ooops crept July August columns July very minor missing pen strokeBoth sets switch contacts wired parallelthis implicit text notation wiring drawing actual sketch August phototop center page 40 upside-down Rotate minds eye make caption make sense Ohfor perfection us some us seem feel have ads Closing thought Lest forget fun what hobby No No less unless youre hobby business making living whole part providing hobby goodies others enjoy fun still fundamental what no matter what favorite model type no matter what style flying No matter what abilities limitations no matter what resources please resist temptation knock fellow modeler because model flying rnrn u QUALITY FIBERGLASS* FRENCH TR-260 * -Stmke EngineA. KITS II 416 587-3610I TR-260* SPAN71 AREA858sq i ENG 90-120 4 CYCLE K WT APPROX 75-8 5 LBIT FEATURES $18499 USLIGHTWEIGHT FIBERGLASS FUSELAGE COWL CANOPY AND ORDER BY PHONE 7 DAYS WEEKWHEEL PANTS BALSA COVERED FOAM WING WITH L E-TE IN PLACE AND SANDED SELECTED BALSA 416 5204192CUT STAB RUDDER ELEVATORS & AILERONS T6 ALUMINUM IADD $1500 postageLANDING GEARS HARDWARE AND INSTRUCTIONSInfo $200 QUADR@TECHFax 416 283-6538ASose 2 weeks deFeesy 3148 KINGSTON RD STE 202 BOX 158 SCARBOROUGH ONT MiM 1P4 CANADA interests may differ yours Fun excitement satisfaction etc mean different things different people Different strokes say right Please enclose SASE correspondence desire response Happy quiet safe Electric flying everyone responding advertisers mention read about Model Aviation tched ior TOP son rribrito AIrplanAMarine 158 FUELS 158 GLOW PLUGS 9 Blends4 Choices Matched Finish System BEST APPEARANCE K&B FIBERGLASS CLOTH 118 SUPER POXY RESIN Isbn K&B SUPER POSY PRIMER conco P0ev tSINT 112 Model Aviation ADAPTOR ThROW-A-WAY YOUR COUETS CHUCK& WRENCH USE OUR OTO OR &HUcK DREMEL POWER TOOLS RUNS 100% TRUE & CONCENTRIC AT FULL RPM NO501 ADAPTOR ESS CHUCK $1895 DREMEL 850395 DO NOT NEED ADAPTOR TO USE KEYLESS CHUCI STEEL SAW AND ARBOR HARDENED GROUND & POUSHED STEEL USED FOR CUrliNG PLASTIC WOOD SOFT METALS LEXAN PLEXIGLASS & ETC AVAILABLE IN 006 008 010 012 014 016 018 020023 025 NO 502 028 032 THICKNESS 1 OLflSIDE DIAMETER @ $875 EA ARBOR$600 NO 503 014 X 114 SAW $600 OUR SAWS ONLY WORK WITH OUR ARBOR MICRO SELF-STARTING TORCH No nAAd flint matches Jest press Piezo Self-Starting batton micro size adiantahie flame barns 2370 sp 3 hours Operates staodard cigarette gliter bafane refillable Taok comforlahly palm yoor hand aed made high-impact raSher allows safe non sup comfortable grip Sapplied can botane MT770 Blow Torch$3800 Iwitti can butanel MT771 Butane 5 ocsean EASTERN TOOL& SUPPLY CO 149 GRAND ST NYC NY 10013 WRITE FOR CATALOG$300 ORDERS 212-925-1006 WHEN ORDERING PPD ADO $300 OFFICE 212-226-3749 COD ADD $500 FAX212-925-1010
Edition: Model Aviation - 1991/10
Page Numbers: 32, 33, 110, 111, 112
THIS MONTHS TOPICS 1 Electric Connection Seivice 2 Electric Meets 3 FF Electric 4 Motor Noise 5 Errata 6 Closing Thought THE ELECTRIC CONNECTION Service opens months column two modelers looking find others area Electrically minded Jim Fox 838A Ronda Sevilla Laguna Hills California 92653 Tel 714/7681635 Jim getting back RC after five year layoff says column has sparked interest Electric contact Jim tell im Bob sent ya Next Bob Botha wrote tell recent relocation address below find no quiet flying vicinity Bob has made arrangements local sod farmer great field Electrics sailplanes has asked invite anyone interested area contact him 1739 Colette Drive N Mankato Minnesota 56003 Tel 507/345-1832 Humxninm-I think feel another club making four Electric meets should know about October First up annual Cape Cod affair Preliminary info has set October fifth sixth E Sandwich High School E Sandwich Massachusetts meet has moved around bit over years has operating annually since 1985 recall Anyway full particulars can Charlie Sylvia CS Flight Systems 31 Perry St Middleboro Massachusetts 02346 October fifth brings Fifth Annual Electric Fun Fly October sixth brings Second Annual Texas Enduro sponsored Dallas Electric Aircraft Flyers DEAF CD Frank Korman can reach him 5834 Goodwin Dallas Texas 75206 Tel 214/821-0393 Frank tells Fun Fly open Electric aircraft trophies smallest longest flight best multi-motor impressive aerobatic addition will drawings wide variety goodies Enduro whole nuther story details involved want request mailer thing will tell youyoull need team participate Now youre curious get letter off Frank October 19th 20th brings us Annual Gulf States Electric Fly-In sponsored Tammany Aero Club held club field Goodbee Louisana mailer available Ben Mathews 101 Mulberry Metairie 32 Model Aviation Electrics Bob Kopski 25 West End Dr Lansdale PA 19446 beautiful Graupner Elndecker right off cover July 91 Model Airplane News Built Clyde Geist Levitown Long island Clyde large active SEFLI contingent Lehigh Valley Pennsylvania meat June Power Speed 600 belt reducer eight cells Prop 11 x 7 up 60 oz dope finish intent gentleman 74-year-old reader Ray Chamberlain Scott City Kansas newly completed Telemaster 40 Plane weighs 6 lb 8 oz 40 cobalt direct 10 x 6 eighteen 1800 SR cells Power control via Jomar SM-4 Ray likes ROG just cruise skiessays plane flies just great way Ray flies off roadway outside townvery little traffic interrupt enjoyment Something old something newthe marriage OT toasys Ace icrorro transmitter Midwests now Vintage Esquire Fifties plane carries re-encoder Mighty MidgetlGalloping Ghost pulse proportional control systemnot unlike decades past Re-encoder published July VRCS Newsletter Esquire 54 oz 05 geared eight 1200s Jomar SM-4 9 x 8 Kyosho prop Louisiana 70005 Tel 504/833-5589 504/366-4511 Boyd OBrien PO Box 7153 Metairie Louisiana 70010 Tel 504/835-5212 will want mailer cause kinds events activities scheduled both days including fun events AMA events plus Cajun cookout swapshop Late news just Westmoreland Electric Soaring Society WESS western Pennsylvania Second Annual Electric Fly will held October 13 field location differs last year sounds like great site full details contact Bob Markle Unit No 3 Sandy Hill Road RD 6 Irwin Pennsylvania 15642 telephone 412/8630103 Im Honorary Member WESS order get out have great time FF Electric picking up following will happy know Dick Gibbs back Flying Models Electric column pursuit subject after lengthy absence Dick friend Bob Afflerback will alternate writing FM column month gentlemen will address different Electric areas interest Along topical area small Electric free flights received interesting mailer/catalog Paul Clark Watts Upa supplier speciality area can get copy Paul PO Box 5702 Hamden Connecticut 06518 Ive interest trying some very small Electrics quite some time Im still gonna itsometime just bought couple Eveready 9V rechargeables sale liberate six 7OmAh cells contain Secee meeeean Motor Noise getting receivers keeps coming up topical area interest Continued page 10 October 1991 33 Rear end bell 05 cobalt has drilled No 43 bit tapped 4-40 thread accept screws sure remove metal chips burrs before reassembling motor Heres what new cobalt looks like out box Single brush-to-brush capacitor rather long leads allows brushes easily removed replaced effec tive approach noise suppression Revised capacitor arrangement reassem bled motor Motor leads removed conve nience clarity will reattached next Note installation solder lug using -in 4-40 ma chine screw lock washer White patch un der center capacitor double stick foam tape keep latter flopping about Approximately hundred people took part special memorial service Johnny Dallas June 19th grand tribute 77 years service others great life around world will miss him Because left memories us recall obviously will forgotten stories jokes will told again again Hell like always enjoyed getting extra laugh old gag several told service Johnny left friends smiles facesa fitting end life left us anotherE Im always happy pass along info may helpful regard month repeat old lesson just got graduate refresher course As result recent interest Electrifying Vintage designs came face face monster problemthat keeping infamous Mighty Midget motor its brush noise clobbering receiver Now doesnt matter know care what Mighty Midget actuator 50s Just accept experience heck noise generator can tell heck struggle noise problem produced Vintage Esquire solved process rediscovered poignant way value properly utilized capacitors brushes As part solution problem MM motor/actuator modified essentially wrapping its plastic housing shield effect put two-piece brass strap way around motor housing installed three capacitors brush brush brush same solder point strap equidistant close brush capacitors used 0001 uFd disc ceramics Radio Shack part number 272-126 made everything work Meaning went just several feet range completely flyable range Nothing short straps caps would allow thisand tried sorts things including inductive networks etc Now lessen new said sort thing has mentioned before other columns Its also interesting European motor suppliers routinely use such capacitor networks motors course flight power system motors plasticthey already have housing made metal So need capacitorsproperly used somehow time either grew lax paid less attention whateverprimarily because planes fly perfectly OK Now subtle significant enlightenment occurs Ive flying Senior Skyvolt over year great plane Yeh Im biased have set up touchy ie controls sensitive plane very responsive has cobalt 40 18 cells plane flies very well its glitchy Ive changed receivers Ive changed transmitters No luck Im sure its speed control sensitivity serve magnify conditionwhereas slower less responsive model would quite bad its glitchyits glitchy special waya way some may experiencing spots both club field ie ground air plane always glitches can taxi right glitchevery timeat certain spot can fly right glitchat certain repeatable spots airevery time glitch zones relatively closeno range problem herethe radio has vastly range always felt glitch zones merely locations signal nulls due signal multipath effect whateverthe sort thing can cause car radio fade briefly few feet car motion come right back up full strength very likely case club field its surrounded steel structureslots places transmitted signals reflect off recombine adversely producing locations signal distortion total signal nulls Ive pretty much accepted 110 Model Aviation RC Electrics/Kopski Continued page 33 SAFE FLYING IS NO ACCIDENT as a given have live reflecting began appreciate obvious signal nulls small sized physical dimension may beare equivalent plane flying very great distanceie flying out range Under conditions no signal receiver AGC relaxes receiver goes full sensitivity Any noiseon board now stands best chance getting has no signal compete witheven though plane may oaly several tens feet away Now true test quality noise suppression motor both radiated conducted brush noise have open shot receiver signal nulls put magnifying glass true performance total Electric installation respect motor noise case speed controls opto-coupling should take care conducted part potential interference Conducted interference follows wires between motor receiver via speed control example Controls having optical coupling have no direct electrical connection between receiver system power system what about radiated part through-the-air partlike radio signal motor receiver Youre familiar radio static household vacuum cleaner electric drill right Same thing folks After Mighty Midget experience began wonder lot about Could actually sufficient brush noise signal faded briefly through null zones noise present sufficient make receiver become erratic could hardly wait pull 40 find out removed single brush-to-brush capacitor supplied original equipment motor installed three Radio Shack 0001 ceramic disks Presto Super Success Ive tried dozens times find favorite glitch holesboth taxiing flightbut effect gone AndI can tell Im lot relaxed flying plane now did another motoran 05 same results Im totally convinced Ive properly assessed problem solved sounds like something youre experiencing take look photos see installed capacitors photos happen 05 cobalt installation very same size What motor size anyway course choose may void applicable warranties Also brush replacement becomes bit difficult since caps have unsoldered before brushes can pulled outbut can have hundreds flights before becomes necessaryso doesnt really matter 5008 SAND BEACH RD / WICHITA FALLS TX 76310 NOR-RAY PRODUCTS INC 817 692 4475 EXHAUST SYSTEMS STOCK OR CUSTOM MADE ST -- SACHS A&M -- OS BGX1 QUADRA -- ZENOAH -- OPS MACHiNED FROM BARSTOCIC DESIG1ED TO FIT INSIDE TIGHT COWLS CALL US FOR YOUR SPECIAL EXHAUST NEEDS CUSTOM VACUUM FORMING CANOPIES -- COWLS -- WHEELPANTS NO JOB TOO BIG OR TOO SMALL Designed Modeler Modelers Cuts Both Sides Same Time Easily Cuts Straight & Tapered Wing Panels Available 30 40 50 60 Still Only $9650 $3OO 5&H Requ1W~ V Power Supply $6250 400 5&H Visa-Mastercard Video Available Send $2 information fine products HANDS OFF CUT TWO Installing capacitors involves disassembly motor hole can drilled tapped rear end bell used permit solder lug screwed placean important step Its easy dojust remove brushes remove case through-bolts remove rear end bell Watch little washers armature shaftthey have tendency slip off get lost Drill No 43 hole shown tap 4-40 tap clean metal fragments out end bell re-assemble motor install solder lug shown reinstall brushes Remove OEM capacitor add new capacitors shown Done Folks winner Again re-discoverybut real eye-opening have acknowledge Europeans really know stuffi noise subject use chokes three speed-control leads go receiver described way back 12/89 continues prove itself invaluable modelers chokesAce No LLlO6impede undesired communication RF frequencies between receiver power systems thus reduce motor noise problemespecially speed controls optically coupled Recently benefit showed up surprising wayspecifically speed control opto-coupler As October 1991 111 best could determine particular control good isolation because opto-couplerjust could hadand showed up think opto coupler doing its basic job due nature physical assembly circuit board sufficient capacitance across opto-coupler pins associated wiring reduce its effectiveness effect conduction path broken appeared radiated path right opto-coupler chokes made noticeable improvement case too Folksdig out back issue see technique wont help have kind motor noise problem Its simple low cost worth try summary between optical coupling chokes speed control/receiver leads good motor capacitor installation motor noise problems should fully controllable Incidentally chokes suggestion has proven useful Im planning update re-run technique some upcoming issue Some Ooops crept July August columns July very minor missing pen strokeBoth sets switch contacts wired parallelthis implicit text notation wiring drawing actual sketch August phototop center page 40 upside-down Rotate minds eye make caption make sense Ohfor perfection us some us seem feel have ads Closing thought Lest forget fun what hobby No No less unless youre hobby business making living whole part providing hobby goodies others enjoy fun still fundamental what no matter what favorite model type no matter what style flying No matter what abilities limitations no matter what resources please resist temptation knock fellow modeler because model flying rnrn u QUALITY FIBERGLASS* FRENCH TR-260 * -Stmke EngineA. KITS II 416 587-3610I TR-260* SPAN71 AREA858sq i ENG 90-120 4 CYCLE K WT APPROX 75-8 5 LBIT FEATURES $18499 USLIGHTWEIGHT FIBERGLASS FUSELAGE COWL CANOPY AND ORDER BY PHONE 7 DAYS WEEKWHEEL PANTS BALSA COVERED FOAM WING WITH L E-TE IN PLACE AND SANDED SELECTED BALSA 416 5204192CUT STAB RUDDER ELEVATORS & AILERONS T6 ALUMINUM IADD $1500 postageLANDING GEARS HARDWARE AND INSTRUCTIONSInfo $200 QUADR@TECHFax 416 283-6538ASose 2 weeks deFeesy 3148 KINGSTON RD STE 202 BOX 158 SCARBOROUGH ONT MiM 1P4 CANADA interests may differ yours Fun excitement satisfaction etc mean different things different people Different strokes say right Please enclose SASE correspondence desire response Happy quiet safe Electric flying everyone responding advertisers mention read about Model Aviation tched ior TOP son rribrito AIrplanAMarine 158 FUELS 158 GLOW PLUGS 9 Blends4 Choices Matched Finish System BEST APPEARANCE K&B FIBERGLASS CLOTH 118 SUPER POXY RESIN Isbn K&B SUPER POSY PRIMER conco P0ev tSINT 112 Model Aviation ADAPTOR ThROW-A-WAY YOUR COUETS CHUCK& WRENCH USE OUR OTO OR &HUcK DREMEL POWER TOOLS RUNS 100% TRUE & CONCENTRIC AT FULL RPM NO501 ADAPTOR ESS CHUCK $1895 DREMEL 850395 DO NOT NEED ADAPTOR TO USE KEYLESS CHUCI STEEL SAW AND ARBOR HARDENED GROUND & POUSHED STEEL USED FOR CUrliNG PLASTIC WOOD SOFT METALS LEXAN PLEXIGLASS & ETC AVAILABLE IN 006 008 010 012 014 016 018 020023 025 NO 502 028 032 THICKNESS 1 OLflSIDE DIAMETER @ $875 EA ARBOR$600 NO 503 014 X 114 SAW $600 OUR SAWS ONLY WORK WITH OUR ARBOR MICRO SELF-STARTING TORCH No nAAd flint matches Jest press Piezo Self-Starting batton micro size adiantahie flame barns 2370 sp 3 hours Operates staodard cigarette gliter bafane refillable Taok comforlahly palm yoor hand aed made high-impact raSher allows safe non sup comfortable grip Sapplied can botane MT770 Blow Torch$3800 Iwitti can butanel MT771 Butane 5 ocsean EASTERN TOOL& SUPPLY CO 149 GRAND ST NYC NY 10013 WRITE FOR CATALOG$300 ORDERS 212-925-1006 WHEN ORDERING PPD ADO $300 OFFICE 212-226-3749 COD ADD $500 FAX212-925-1010