Radio Control: Electrics

Radio Control Electrics Bob Kopski MORE Electric writing want open column hearty atta boy best wishes Flying Models magazine author Mike Charles introduced new column Electric commencing June 1985 issue addition brings total Electric column count fiveor lOOo popular monthly magazines hobby blessed has personally very interesting witness steady growth Electric interest over decade wherein three magazines including MA have installed dedicated columns less two years Electric OT competition Last months column included short addenda announc ing addition Electric event normal list gas activities annual SAM 76 Old-Timers meet Hatfield PA year scheduled July 14 confused annual KRC Electric Fly also held Hatfield PAthis year September 21 22 must say some considerable personal satisfaction column January 1985 may have helped happen column commented attending affair last year flying some Electric demo also suggested natural mix Electric OT simple approaches may used get OT Electric activity going throughout country Well forward-thinking lead ers SAM Chapter 76 doing just introducing Electric annual schedule very easy encouraging way years event will open SAM-recognized Antique Old-Timer design size Electric power system rules very simple very encouragingnone Entries will able fly out battery charge two flight attempts max flight time will established CD accommodate existing conditions flyoff will held necessary Period Complete utter first-time simplici ty Now thats what call understanding sort come just try Electric best just whats needed help Electric causeOT otherwisethrough out great country established Electric activity does now exist just about everywhere SAM nationally has Electric rules proposal before its membership attitude sense around particular proposals actually put effect first SAM 76 Electric event participation would likely grand total zero Lets look proposed SAM Electric rules clude several seemingly complicated requirements along some straightforward Examples former include such things no direct drive specific gear ratio limits cant see sense maximum prop diameter ditto max rpm measured tachometer can believe minimum wing loadings allowed tach accuracy idently some doesnt realize accuracy spread equivalent approximate 331o power spread Examples normal sounding rules include cell count run time Now someone out can educate value reasoning behind first examplesconvincinglyand pro viding has nothing specific product limitations promotions Ill happy pass word along everyone future column now thing can see happening pro posals near certain slowing down Electric growth within OT As best can ascertain suggested rules originate West know region country rather active Electric competitionsOT otherwiQP Ppr haps attitude modelers can readily accept adapt such rules regimen though still dont know Maybe its case banging ones head against brick wall because feels good stops likely suspect hard-to-believe rules driven part bickering Electric industrysomething also mentioned January 1985 column Anyway best can tell based Another Bill Youngs p lanes Astro Bill Youngs f Inc Scale rendition 05powered flying plank Sal ipiane Photos modified Culver Dart used Keller 50124 Youngs planes T Naccarato 48 Model Aviation Larry Jollys Electricus hauled straight up Astro 40 cobalt motor 21ceii pack 800 mAh NiCds FAI class F3E performancel M Poling photo group 1985 Astro Champs held West Coast Pattern p lane Electric conver sian Magic 20 Steve Neu ARF very acrobatic typical Pattern planes flown Mitch Poling photo Tony Naccarato Dulluer Turner photographer Astro 05powered Acrobatic ship looks lot like Control Line FAI Team Racer Bill Youngs aerobatic Laser 2000 Motiva tion Astro 15 cobalt M Poling personal conversation incoming mail related experience areas country still woefully short Electric fliers Electric meetssomething rules complexity wont help No rules definitely will helpfor starters thats exactly what SAM 76 giving try Personally expect see perhaps handful modelers give event try have plenty fun doing therell watch keen interest curiosityat very same time proclaiming Wait till next year next year participating number will somewhere around twice sure beats zero So much prediction Ill participatingand Ill faithfully report results column see rightor wrongIve called quite conceivable move SAM 76 will put group leadership position Electric OT coast Best wishes SAM 76 World Championships doing thing can encourage first-ever US participation andbetter yetvictory back 1985 Astro Champs Both Bob Model Builders Mitch Pol ing kind enough send photos information about affair year total 90 entries RC 35 FF CL Yes Electric works just great FF CL Just show what can done experienced contest-oriented climate meet seven RC contest categories included Seven-Cell Sailplane Unlimited Saiplane Seven-Cell OldTimer' 'Unlimited Old-Timer' Stand-Off Scale Aerobatics Seven-Cell Pylon Now lets look some seemingly natural sensible Electric rules used multi-event meet example glider event rules tasks included such things one-minute motor runs sevenminute precision glide duration spot landings Makes sense criteria may too much relatively inexperienced areas small Electric populations attempting first Electric meet no problem locations such out West Astro meet well-established annual affair plenty experienced participants very strongly advocate Continued page 128 Eleventh annual Astro Electric Champi onships Next acknowledge glee Eleventh Anniversary Astro Electric Championships year held multiple February weekends sites sunny California Astros president Bob Boucher pronounced boo-shay has long advocated promotion Electric competition fact Bob very high upcoming 1986 FAI Electric Bob Bouchers Astro Challenger powered geared Astro 05 cobalt seven 800 mAh cells flew East Coasts 1984 KR C Electric fly Photo Ron Black Nominal all-inclusive admission fee Pay door Brought Hobby Industries America 319 East 54th St PO Box 348 Elmxood Pork NJ 07407 201 794-1133 August 1985 49 SUNDAY SEPTEMBER 81985 lOAM 6PM Cob Hall C Detroit Michigan MAKE YOUR PURCHASES ON THE SPOT AND. Marvel championship show teams demonstrating radio control boats planes cars Visit model railroad layout Participate adventure/role playing games Check out rockets die cast miniatures Being held plastic model kits model accessoriesGTatErDetlOit Supe$ ISA0 LEARN TO FLY toundimentais covered door & out entire solo much BEGINNERS PACKAGE OFFER Purchase Basic Con struction program reularricearid receive asic ilight Training 30 otr retail Save $1395 after competition endedand what show thought Ralf might hold back just little knew show right first launch wings extended maxi mum 324 meters Ralf gave bird contest-type launch lift thermal played about three minuteslong enough get good height demonstrate Speed run wing outer panels tele scoped over main panel reducing span 232 meters wingspan reduction over three feet Speed run simulated because sight ing devices removed other flight demonstrations two factors rang out plane fast quiet sign things come Maybe team Decker Pfefferkorn latter claimed arent sure have answers correctmainly because model came out much too heavy However can sure right track Earlier week Pfefferkorn paying compliments Blanchard Calypsos fine design added unlimited laps Distance horizon design trend will Mr Blanchard has taken Herr Pfefferkorn must know what speaks Just compare three views two models months last months issues VIDEO PROGRAMS VHS&BETA PROGRAM USTINGSBUY BASIC CONSTRUCTION FOR BEGINNERS IN RIC -- -107 Mm 4096 BASIC FUGHTTRAINING FOR BEGINNERS IN RIC -66 Mm 4496 Profeasional highly detailed stepby-htep instructIon Z ThE WORLD OF MODEL AVIATION90 Mm 44-96 Expo Scale meets AMA Nate & 4OSHKOSH OVERVIEW56 Mm 3996 Woricahopa Forums Tours Aerobatics Warbirda & Moe. 5AIRPLANE FUNNIES3OMIn 3996 See yox friends others goofing wildest video ever 6US SCALE MASTERS CHAMPIONSHIPS --- -80 Mm 3996 beet scale models pilots competIng top honors 7flJAOSSflO IJ75 Mm 4996 ORDERING INFORMATION P1.. Reed CaewAaUv Avoid DelAll sales final RENTAL DEPOSIT full purchase price EACH program ordered difference refunded RENTAL DURATION 1 week after delivery Reserved dates require 15 day notice PAYMENT Check 10 day clearance money order Sorry no Visa etc CODs available phone SHIPPING 5375Forelgn Canada add 10% TOTAL others add 15% IL res add 8% tax -SEND C ACADEMY OF AVIATION RESEARCH & DEVEI CHICAGO IL 60642 can 312 a74Oi86 Start buildingand good lift Dan Pruss 131 E Pennington Ln Plainfield IL 60544 RC Electrics/Kopski Continued page 49 encourage initial no rules approach Electric participation starters certainly discourage organized competition established environ mentsif done sensibly see cause promoting sharing Elec tric funat level thats appropriate especially start-up level though some column pic tures little shy detailed written info give good idea sort model corresponding modeler Astro meet Mitch Polings overall impression meet definitely year patternTurn around Pattern being excellent Elec trics Also Mitch advises year AREsconverted gas jobs Exceed Magic 20 Quatro 40 flown Also says its year Old-Timer being record number entrants heavy competition dont know what rules particulars surely brief ly described above Finally Mitch advis es everyone good time What else say Thanks Bob Mitch Popular subject May issue presented simple charge system anyone could build easily charge large num bers cells turns out column has among popular ever has considerable reader response suspected would area genuine interestbingo question has surfaced concerns Radio Shack catalog number Volt age Inverter catalog number 22-129just article said However current models Radio Shack stores labeled 22-129B Dont concerned use B merely represents current version Im told yes error sche maticthe resistor ohm 110 ohms shown Most everyone saw through several kind enough bring attention both MA myself assured culprit causing problem has fired MAs staff Im told sincerely hope give charge system try will find easily performs billedand some Basic electricity Last installment took good look range electrical sizes associated hobbythe typical values voltage current resistance likely encounter 128 Model Aviation Pill Rentals Si 495 ATTENTION ERS Two TOP QUALITY Canard Kits 1/5 SUAL WINGSPAN 6260 1/4 SCALEa WINGSPAN 48-5 FASTAND SLEEKe ENGINE 40-45cALL BALSAe ENGINE 35-45 FOAM CORE WING NELS 4-5a EASY TO BUILD CHANNELS 4 BALSA FUSELAGE IL $15995AND FLY RETAIL $12995 Now Available Wherever H/C Models Sold. Write ST CROIX MODELS OX 279 PARK FALLS WI 54552 EPOXY GLASS COWLS FOR NOSEN PiCA SiD MORGAN SALSA USA PLAfl CONCEPT PLEET HOSTETLER RCM TCRAPT SHESER PiTTS & E SUPER CUB POKKER 07 BOEING P12 P25 F4e2 P4B4 SPARROW HAWK GEE BEE MOO Y MACBRIENS TURBULENT CHRISTEN EAGLE BRISIGHELLAS STARDUSTER II SCALE J351 BABY FLYBABY & OTHE RS WHEEL PANTS FOR CiTABRiA STAROUSTER II PiErS SKYBOLT LIBERTY SPORT CHRISTEN EAGLE PBE HAWK MULLIGAN & OTHERS LARGE SCALE PLANS AVAILABLE Please send $100 complete list Supply Modelers with fiberglass parts plans Write cSll us T & D FIBERGLASS SPECIALTIES 35525 eiOcK GARDEN CITY Mi 4813B PHONE 1313421-6358 BRAZED & HEAT-TREATED WIRE GEARS & CARANES PHONE 13131261-9064 Available & L PAN AMERICAN INTL GJ HOBBIES SIG MFG RIG AEREO ENGINES P21 SE-Fl P21 RE-Fl P40 SE-Fl P40 PYLON RE-RI P45 SE-FI P60 SE-Fl P60 RE-FI P80 SE-Fl P80 RE-Fl P65 DUCTED FAN-R E -R P80 DUCTED FAN-RE -R $5995 $6995 $6995 $8995 $7195 $10295 $10795 $11595 $11595 $11595 $11795 LPQ7 Imported CONDOR TRADING CO P0 Box 3479 Mission Viejo CA 926901479 Dealer & Distributor Inquiries invited 714 768-5933 Prices subject change notice MICRONO TORI RIG MARINE ENGINES P21 SE-FI P21 RE-Fl P45 RE-RI P65 RE-Rl P80 RE-RI P90 RE-RI R/O CAR-BUGGY-TETHER P21 CAR-DELTA REFI P21 CAR REAR OR S E-F P21 BUGGY REAR OR S E -FI P60 TETHER CAR-R ERI NEW PRICESI $8195 $8195 $9995 $11095 $11795 $14395 CAR ENGINES $7995 $7295 $6995 $11095 look inside box Now its time take look various multime ters pictured March MA onset miniseries Well look classic analog variety first save digital type later First what multimeter bet ter yet what meter Well take second question first meter real ly mean meter movementthe thing pointer number scale basically two kinds meter movements usethe economy iron vane type moving-coil type iron-vane meter usually found con sumer products example meter popular chargers market usually have stationary coil energized test signal causes deflection moving iron part pointer attached Such economy meter movements often have non-linear scalesthe numbers spread evenly meter face Also usually easily influenced exter nal magnetic fields Holding magnetized item nearby can cause deflection pointer multimeters market know use moving-coil type con struction well look type might think moving coil meter movement very tiny motor limited rotational travel pointer affixed shaft effect tiny arma ture multi-turn coil wire having shaft thats free rotate bear ings moving coil assembly resides magnetic field supplied permanent magnets much like magnetic field flight motors key difference tween such movement motor however meter armature spring-loaded rest particular posi tion zero meter use meter used arma ture rotates against spring force new angular position comes rest position electromagnetic force caused applied test signal just equals restoring force spring larg er test signal greater rotation Looking another way signal means magnetic force move centering spring farther zero pointer moved proportion applied test signal thus can used measure unknown input once cali brated addition movement has no brushes commutator Instead put routed m9ving coil through spiral centering springs Moving coil meters usually shielded against exter nal magnetic influences have linear scales However also usually costlyand fragile So should handled care banged around meters armature coil produces its deflecting magnetic force current passed through coil winding Basical ly meter movements current meters Most movements used multimeters require current range 10-100 microamps millionths amps deflect pointer full scale depending product design Radio Shack 22-204 multimeter pictured March 85 MA start miniseries has 18 microamp movement Thats cur rent /2 1 million yes million times less flight motors use coil winding resistance much meters usually few thousand ohms As such stand-alone usefulness such meter movement limited example lets say particular movement has fullscale deflection current rating 50 microamps common cause Lets also say movement has winding resistance 2000 ohms very reasonable previous Ohms law lessons can deter voltage needed cause fullscale meter deflection goes like V IR 000000 x 2000 olts Now taken alone very use ful After folks need A0-volt voltmeter However soon movement combined suitable external resistors becomes extremely useful fact basic movement assembled together collection several suitable selectible resistor netContinued page 132 OHIO SUPERSTAR PRODUCTS INC 11376 Ridgeway Rd. Kensington OH 44427 23-1950 August1985 129 CURTISS RQj3IN or3-35Ib Models .For3-81bmodels -Available Aug 85 $10 9RALPH 9ECK RT260X131 BELDITWI53511 87l/6SCALEJENNYJN4-O2PLANS 2795 R PD 88 NANSA-BAANDENBURG W-29 SEAPLANE- SOON other tuilwheel usseniblles 49 Ibs$1295 Ohio d for10-13 Ihs$1495 Complete Catalog1935 lbs $1595 % r SWI NGEE ALL YOU NEED anew buHtIncontrolhorni$ 295/pair Meeni Swing. joel like hItge No 1u154. Foe ailenon peas dent nmda lteny toeqe red beta niralahi toohnod toSwtng. pen en KnielcOnka beilorank. mm witi - SIINGEE5 USA *son gene eonfroaem linkage sladeahi sloppy noetnol HARD TO FIND ITEMS coerpintely new generation controihon now anailable onery nodeler Swingee thin onlose denion will henelit onety nodeBLISWQtLtQhIOOS noaring pattern pylon nyontllpeDPteose send e. pa Se opec $ 2 95... Swingee totally bout-in kaoPn i-OThER PRODUCTSIlPlease send __________A $ 29h...... otoitaerottynamlccleanThlnwllloiooarnelm-lt ly include $ 295 handling fee prooehoththeeppesrenceondpetlonnanoeoter'sed wy check lot- $ enety tnodel Swingee eanily Installed Rl9QIflg COUP andllnkeddireotlpnaoinOKwiok-linknandhnll Pasirrod ends yOVmsainetsDMten orenkn Thin redosen notnhentreaded M2 eye 1 mm ~hoct no ___________ Enpdate Na-___________ linkagen thereto$295115 pcodet-ess _________________________________________ Increanen oreninion connidetbde linde Itoh-In irpet-viocs toSteel pipe clampsSeed tauGLlnternatienol AS Ens 3459 tenteratare changes52954pcsS-t6203 VellioghySIIEDEW RC Electrics/Kopski Continued page 129 works becomes multimeter meters having very useful measurement ranges package Later well see some resistors used make dif ferent voltage ranges others used make current ranges insight multimeters work will make using snapsimply because will make sense will add greatly understanding what really goes airborne wiring charger other electrical things well Finally closing impact consider electrical power needed move exam ple movement full-scale can get previous lessons Thus P Xo x 50/1000000 P one-millionths watt about one-half-a-billionth power typical 05 Electric flight motor Heres another new Electric event add calendar Daniel Boone Silent Fliers have scheduled Sixth Annual 2-Meter Sailplane Contest Saturday Sunday September 28 29 year adding Electric event normal activities day indepen dent have two opportunities show Electric stuff Electric event Duration event open Electrics size motor Ni-Cd battery No rules event will flown rounds just like Sailplanes can fly out full charge flight Flight maxes possible tasks will established CD idea promote Electric Sounds familiar information please contact Contest Director Jerry Zeigenfuse 8 Craig Drive Reading PA 19606 tele phone 215 779-3229 Please forward questions SASE author Bob Kopski 25 West End Dr Lansdale PA 19446 may Happy Electric Landings yours RC Old-Timers/Mathews Continued page 51 term dwell something never finds mentioned old articles books subject some thing mystery modelers true old-timers ran things game town Dwell defined length time points closed during 3600 crankshaft rotation Normally dwell between 90 0and 130 little dwell coil saturated long enough deliver strong spark too much planes on-board ignition battery-pack will drained excessively Successful operation miniature model ignition engines depends degree dwell just does automobile lawn mower engines High-speed racing engines McCoy Dooling etc turn over 10000 rpm can use dwells over 1200 draw excessive current however lower-rpm engines should set range 950 1100 ammeter should show battery current engine running about 1A amp less current dwell set too long models onboard battery pack wont last long using quick-box merely clamp favorite old sparker engine onto universal mount slide box behind clip three alligator-clip-equipped wires appropriate places Minus ground preferably right handy spot engine Plus point lead high-tension lead spark plug Its ready fire up drawing wiring dia gram parts list should enable anyone construct extremely handy device few tips using quick box Look circuit notice coil always connected batteries fear bit current will flow until transistors Base connection tickled Dealer Inquiry Invited 3405 Cleveland Ave SW Canton OH 44707 Ssnd$lforCutalog 84-6810 aRoUsH MFG 132 Model Aviation BUILDS QUICK3itukkrr r1FLIES GREAT Au Economical Clange ENGINE __________ 09 15 RADIO CHANNELS .-2 3 TOP WINGSPAN L WING AREA ..460 sqin FLYING WEIGHT_______ 38 oz WING L0ADINGll9 ozsisqf KIT FEATURES ALL 1ST QUALITY BALSA AND PLYWOOD MACHINE CUT RIBS AND HARDWOOD PARTS FORMED COWL AND WIRE PARTS APPLE MODEL PRODUCTS 7241 Kersten StCitrus Hts Ca 95621 TEL #916/722-7035 ONLY $4195 TOORDIN SEND EK se MO ADD 5250 niio coo $500 CA RES ADD 6Z TAX Super sport flier turnaround patternI Balsa & ply construction 70 span 927 sq area 7A -8A lbs139 75-12 co in

Radio Control Electrics Bob Kopski MORE Electric writing want open column hearty atta boy best wishes Flying Models magazine author Mike Charles introduced new column Electric commencing June 1985 issue addition brings total Electric column count fiveor lOOo popular monthly magazines hobby blessed has personally very interesting witness steady growth Electric interest over decade wherein three magazines including MA have installed dedicated columns less two years Electric OT competition Last months column included short addenda announc ing addition Electric event normal list gas activities annual SAM 76 Old-Timers meet Hatfield PA year scheduled July 14 confused annual KRC Electric Fly also held Hatfield PAthis year September 21 22 must say some considerable personal satisfaction column January 1985 may have helped happen column commented attending affair last year flying some Electric demo also suggested natural mix Electric OT simple approaches may used get OT Electric activity going throughout country Well forward-thinking lead ers SAM Chapter 76 doing just introducing Electric annual schedule very easy encouraging way years event will open SAM-recognized Antique Old-Timer design size Electric power system rules very simple very encouragingnone Entries will able fly out battery charge two flight attempts max flight time will established CD accommodate existing conditions flyoff will held necessary Period Complete utter first-time simplici ty Now thats what call understanding sort come just try Electric best just whats needed help Electric causeOT otherwisethrough out great country established Electric activity does now exist just about everywhere SAM nationally has Electric rules proposal before its membership attitude sense around particular proposals actually put effect first SAM 76 Electric event participation would likely grand total zero Lets look proposed SAM Electric rules clude several seemingly complicated requirements along some straightforward Examples former include such things no direct drive specific gear ratio limits cant see sense maximum prop diameter ditto max rpm measured tachometer can believe minimum wing loadings allowed tach accuracy idently some doesnt realize accuracy spread equivalent approximate 331o power spread Examples normal sounding rules include cell count run time Now someone out can educate value reasoning behind first examplesconvincinglyand pro viding has nothing specific product limitations promotions Ill happy pass word along everyone future column now thing can see happening pro posals near certain slowing down Electric growth within OT As best can ascertain suggested rules originate West know region country rather active Electric competitionsOT otherwiQP Ppr haps attitude modelers can readily accept adapt such rules regimen though still dont know Maybe its case banging ones head against brick wall because feels good stops likely suspect hard-to-believe rules driven part bickering Electric industrysomething also mentioned January 1985 column Anyway best can tell based Another Bill Youngs p lanes Astro Bill Youngs f Inc Scale rendition 05powered flying plank Sal ipiane Photos modified Culver Dart used Keller 50124 Youngs planes T Naccarato 48 Model Aviation Larry Jollys Electricus hauled straight up Astro 40 cobalt motor 21ceii pack 800 mAh NiCds FAI class F3E performancel M Poling photo group 1985 Astro Champs held West Coast Pattern p lane Electric conver sian Magic 20 Steve Neu ARF very acrobatic typical Pattern planes flown Mitch Poling photo Tony Naccarato Dulluer Turner photographer Astro 05powered Acrobatic ship looks lot like Control Line FAI Team Racer Bill Youngs aerobatic Laser 2000 Motiva tion Astro 15 cobalt M Poling personal conversation incoming mail related experience areas country still woefully short Electric fliers Electric meetssomething rules complexity wont help No rules definitely will helpfor starters thats exactly what SAM 76 giving try Personally expect see perhaps handful modelers give event try have plenty fun doing therell watch keen interest curiosityat very same time proclaiming Wait till next year next year participating number will somewhere around twice sure beats zero So much prediction Ill participatingand Ill faithfully report results column see rightor wrongIve called quite conceivable move SAM 76 will put group leadership position Electric OT coast Best wishes SAM 76 World Championships doing thing can encourage first-ever US participation andbetter yetvictory back 1985 Astro Champs Both Bob Model Builders Mitch Pol ing kind enough send photos information about affair year total 90 entries RC 35 FF CL Yes Electric works just great FF CL Just show what can done experienced contest-oriented climate meet seven RC contest categories included Seven-Cell Sailplane Unlimited Saiplane Seven-Cell OldTimer' 'Unlimited Old-Timer' Stand-Off Scale Aerobatics Seven-Cell Pylon Now lets look some seemingly natural sensible Electric rules used multi-event meet example glider event rules tasks included such things one-minute motor runs sevenminute precision glide duration spot landings Makes sense criteria may too much relatively inexperienced areas small Electric populations attempting first Electric meet no problem locations such out West Astro meet well-established annual affair plenty experienced participants very strongly advocate Continued page 128 Eleventh annual Astro Electric Champi onships Next acknowledge glee Eleventh Anniversary Astro Electric Championships year held multiple February weekends sites sunny California Astros president Bob Boucher pronounced boo-shay has long advocated promotion Electric competition fact Bob very high upcoming 1986 FAI Electric Bob Bouchers Astro Challenger powered geared Astro 05 cobalt seven 800 mAh cells flew East Coasts 1984 KR C Electric fly Photo Ron Black Nominal all-inclusive admission fee Pay door Brought Hobby Industries America 319 East 54th St PO Box 348 Elmxood Pork NJ 07407 201 794-1133 August 1985 49 SUNDAY SEPTEMBER 81985 lOAM 6PM Cob Hall C Detroit Michigan MAKE YOUR PURCHASES ON THE SPOT AND. Marvel championship show teams demonstrating radio control boats planes cars Visit model railroad layout Participate adventure/role playing games Check out rockets die cast miniatures Being held plastic model kits model accessoriesGTatErDetlOit Supe$ ISA0 LEARN TO FLY toundimentais covered door & out entire solo much BEGINNERS PACKAGE OFFER Purchase Basic Con struction program reularricearid receive asic ilight Training 30 otr retail Save $1395 after competition endedand what show thought Ralf might hold back just little knew show right first launch wings extended maxi mum 324 meters Ralf gave bird contest-type launch lift thermal played about three minuteslong enough get good height demonstrate Speed run wing outer panels tele scoped over main panel reducing span 232 meters wingspan reduction over three feet Speed run simulated because sight ing devices removed other flight demonstrations two factors rang out plane fast quiet sign things come Maybe team Decker Pfefferkorn latter claimed arent sure have answers correctmainly because model came out much too heavy However can sure right track Earlier week Pfefferkorn paying compliments Blanchard Calypsos fine design added unlimited laps Distance horizon design trend will Mr Blanchard has taken Herr Pfefferkorn must know what speaks Just compare three views two models months last months issues VIDEO PROGRAMS VHS&BETA PROGRAM USTINGSBUY BASIC CONSTRUCTION FOR BEGINNERS IN RIC -- -107 Mm 4096 BASIC FUGHTTRAINING FOR BEGINNERS IN RIC -66 Mm 4496 Profeasional highly detailed stepby-htep instructIon Z ThE WORLD OF MODEL AVIATION90 Mm 44-96 Expo Scale meets AMA Nate & 4OSHKOSH OVERVIEW56 Mm 3996 Woricahopa Forums Tours Aerobatics Warbirda & Moe. 5AIRPLANE FUNNIES3OMIn 3996 See yox friends others goofing wildest video ever 6US SCALE MASTERS CHAMPIONSHIPS --- -80 Mm 3996 beet scale models pilots competIng top honors 7flJAOSSflO IJ75 Mm 4996 ORDERING INFORMATION P1.. Reed CaewAaUv Avoid DelAll sales final RENTAL DEPOSIT full purchase price EACH program ordered difference refunded RENTAL DURATION 1 week after delivery Reserved dates require 15 day notice PAYMENT Check 10 day clearance money order Sorry no Visa etc CODs available phone SHIPPING 5375Forelgn Canada add 10% TOTAL others add 15% IL res add 8% tax -SEND C ACADEMY OF AVIATION RESEARCH & DEVEI CHICAGO IL 60642 can 312 a74Oi86 Start buildingand good lift Dan Pruss 131 E Pennington Ln Plainfield IL 60544 RC Electrics/Kopski Continued page 49 encourage initial no rules approach Electric participation starters certainly discourage organized competition established environ mentsif done sensibly see cause promoting sharing Elec tric funat level thats appropriate especially start-up level though some column pic tures little shy detailed written info give good idea sort model corresponding modeler Astro meet Mitch Polings overall impression meet definitely year patternTurn around Pattern being excellent Elec trics Also Mitch advises year AREsconverted gas jobs Exceed Magic 20 Quatro 40 flown Also says its year Old-Timer being record number entrants heavy competition dont know what rules particulars surely brief ly described above Finally Mitch advis es everyone good time What else say Thanks Bob Mitch Popular subject May issue presented simple charge system anyone could build easily charge large num bers cells turns out column has among popular ever has considerable reader response suspected would area genuine interestbingo question has surfaced concerns Radio Shack catalog number Volt age Inverter catalog number 22-129just article said However current models Radio Shack stores labeled 22-129B Dont concerned use B merely represents current version Im told yes error sche maticthe resistor ohm 110 ohms shown Most everyone saw through several kind enough bring attention both MA myself assured culprit causing problem has fired MAs staff Im told sincerely hope give charge system try will find easily performs billedand some Basic electricity Last installment took good look range electrical sizes associated hobbythe typical values voltage current resistance likely encounter 128 Model Aviation Pill Rentals Si 495 ATTENTION ERS Two TOP QUALITY Canard Kits 1/5 SUAL WINGSPAN 6260 1/4 SCALEa WINGSPAN 48-5 FASTAND SLEEKe ENGINE 40-45cALL BALSAe ENGINE 35-45 FOAM CORE WING NELS 4-5a EASY TO BUILD CHANNELS 4 BALSA FUSELAGE IL $15995AND FLY RETAIL $12995 Now Available Wherever H/C Models Sold. Write ST CROIX MODELS OX 279 PARK FALLS WI 54552 EPOXY GLASS COWLS FOR NOSEN PiCA SiD MORGAN SALSA USA PLAfl CONCEPT PLEET HOSTETLER RCM TCRAPT SHESER PiTTS & E SUPER CUB POKKER 07 BOEING P12 P25 F4e2 P4B4 SPARROW HAWK GEE BEE MOO Y MACBRIENS TURBULENT CHRISTEN EAGLE BRISIGHELLAS STARDUSTER II SCALE J351 BABY FLYBABY & OTHE RS WHEEL PANTS FOR CiTABRiA STAROUSTER II PiErS SKYBOLT LIBERTY SPORT CHRISTEN EAGLE PBE HAWK MULLIGAN & OTHERS LARGE SCALE PLANS AVAILABLE Please send $100 complete list Supply Modelers with fiberglass parts plans Write cSll us T & D FIBERGLASS SPECIALTIES 35525 eiOcK GARDEN CITY Mi 4813B PHONE 1313421-6358 BRAZED & HEAT-TREATED WIRE GEARS & CARANES PHONE 13131261-9064 Available & L PAN AMERICAN INTL GJ HOBBIES SIG MFG RIG AEREO ENGINES P21 SE-Fl P21 RE-Fl P40 SE-Fl P40 PYLON RE-RI P45 SE-FI P60 SE-Fl P60 RE-FI P80 SE-Fl P80 RE-Fl P65 DUCTED FAN-R E -R P80 DUCTED FAN-RE -R $5995 $6995 $6995 $8995 $7195 $10295 $10795 $11595 $11595 $11595 $11795 LPQ7 Imported CONDOR TRADING CO P0 Box 3479 Mission Viejo CA 926901479 Dealer & Distributor Inquiries invited 714 768-5933 Prices subject change notice MICRONO TORI RIG MARINE ENGINES P21 SE-FI P21 RE-Fl P45 RE-RI P65 RE-Rl P80 RE-RI P90 RE-RI R/O CAR-BUGGY-TETHER P21 CAR-DELTA REFI P21 CAR REAR OR S E-F P21 BUGGY REAR OR S E -FI P60 TETHER CAR-R ERI NEW PRICESI $8195 $8195 $9995 $11095 $11795 $14395 CAR ENGINES $7995 $7295 $6995 $11095 look inside box Now its time take look various multime ters pictured March MA onset miniseries Well look classic analog variety first save digital type later First what multimeter bet ter yet what meter Well take second question first meter real ly mean meter movementthe thing pointer number scale basically two kinds meter movements usethe economy iron vane type moving-coil type iron-vane meter usually found con sumer products example meter popular chargers market usually have stationary coil energized test signal causes deflection moving iron part pointer attached Such economy meter movements often have non-linear scalesthe numbers spread evenly meter face Also usually easily influenced exter nal magnetic fields Holding magnetized item nearby can cause deflection pointer multimeters market know use moving-coil type con struction well look type might think moving coil meter movement very tiny motor limited rotational travel pointer affixed shaft effect tiny arma ture multi-turn coil wire having shaft thats free rotate bear ings moving coil assembly resides magnetic field supplied permanent magnets much like magnetic field flight motors key difference tween such movement motor however meter armature spring-loaded rest particular posi tion zero meter use meter used arma ture rotates against spring force new angular position comes rest position electromagnetic force caused applied test signal just equals restoring force spring larg er test signal greater rotation Looking another way signal means magnetic force move centering spring farther zero pointer moved proportion applied test signal thus can used measure unknown input once cali brated addition movement has no brushes commutator Instead put routed m9ving coil through spiral centering springs Moving coil meters usually shielded against exter nal magnetic influences have linear scales However also usually costlyand fragile So should handled care banged around meters armature coil produces its deflecting magnetic force current passed through coil winding Basical ly meter movements current meters Most movements used multimeters require current range 10-100 microamps millionths amps deflect pointer full scale depending product design Radio Shack 22-204 multimeter pictured March 85 MA start miniseries has 18 microamp movement Thats cur rent /2 1 million yes million times less flight motors use coil winding resistance much meters usually few thousand ohms As such stand-alone usefulness such meter movement limited example lets say particular movement has fullscale deflection current rating 50 microamps common cause Lets also say movement has winding resistance 2000 ohms very reasonable previous Ohms law lessons can deter voltage needed cause fullscale meter deflection goes like V IR 000000 x 2000 olts Now taken alone very use ful After folks need A0-volt voltmeter However soon movement combined suitable external resistors becomes extremely useful fact basic movement assembled together collection several suitable selectible resistor netContinued page 132 OHIO SUPERSTAR PRODUCTS INC 11376 Ridgeway Rd. Kensington OH 44427 23-1950 August1985 129 CURTISS RQj3IN or3-35Ib Models .For3-81bmodels -Available Aug 85 $10 9RALPH 9ECK RT260X131 BELDITWI53511 87l/6SCALEJENNYJN4-O2PLANS 2795 R PD 88 NANSA-BAANDENBURG W-29 SEAPLANE- SOON other tuilwheel usseniblles 49 Ibs$1295 Ohio d for10-13 Ihs$1495 Complete Catalog1935 lbs $1595 % r SWI NGEE ALL YOU NEED anew buHtIncontrolhorni$ 295/pair Meeni Swing. joel like hItge No 1u154. Foe ailenon peas dent nmda lteny toeqe red beta niralahi toohnod toSwtng. pen en KnielcOnka beilorank. mm witi - SIINGEE5 USA *son gene eonfroaem linkage sladeahi sloppy noetnol HARD TO FIND ITEMS coerpintely new generation controihon now anailable onery nodeler Swingee thin onlose denion will henelit onety nodeBLISWQtLtQhIOOS noaring pattern pylon nyontllpeDPteose send e. pa Se opec $ 2 95... Swingee totally bout-in kaoPn i-OThER PRODUCTSIlPlease send __________A $ 29h...... otoitaerottynamlccleanThlnwllloiooarnelm-lt ly include $ 295 handling fee prooehoththeeppesrenceondpetlonnanoeoter'sed wy check lot- $ enety tnodel Swingee eanily Installed Rl9QIflg COUP andllnkeddireotlpnaoinOKwiok-linknandhnll Pasirrod ends yOVmsainetsDMten orenkn Thin redosen notnhentreaded M2 eye 1 mm ~hoct no ___________ Enpdate Na-___________ linkagen thereto$295115 pcodet-ess _________________________________________ Increanen oreninion connidetbde linde Itoh-In irpet-viocs toSteel pipe clampsSeed tauGLlnternatienol AS Ens 3459 tenteratare changes52954pcsS-t6203 VellioghySIIEDEW RC Electrics/Kopski Continued page 129 works becomes multimeter meters having very useful measurement ranges package Later well see some resistors used make dif ferent voltage ranges others used make current ranges insight multimeters work will make using snapsimply because will make sense will add greatly understanding what really goes airborne wiring charger other electrical things well Finally closing impact consider electrical power needed move exam ple movement full-scale can get previous lessons Thus P Xo x 50/1000000 P one-millionths watt about one-half-a-billionth power typical 05 Electric flight motor Heres another new Electric event add calendar Daniel Boone Silent Fliers have scheduled Sixth Annual 2-Meter Sailplane Contest Saturday Sunday September 28 29 year adding Electric event normal activities day indepen dent have two opportunities show Electric stuff Electric event Duration event open Electrics size motor Ni-Cd battery No rules event will flown rounds just like Sailplanes can fly out full charge flight Flight maxes possible tasks will established CD idea promote Electric Sounds familiar information please contact Contest Director Jerry Zeigenfuse 8 Craig Drive Reading PA 19606 tele phone 215 779-3229 Please forward questions SASE author Bob Kopski 25 West End Dr Lansdale PA 19446 may Happy Electric Landings yours RC Old-Timers/Mathews Continued page 51 term dwell something never finds mentioned old articles books subject some thing mystery modelers true old-timers ran things game town Dwell defined length time points closed during 3600 crankshaft rotation Normally dwell between 90 0and 130 little dwell coil saturated long enough deliver strong spark too much planes on-board ignition battery-pack will drained excessively Successful operation miniature model ignition engines depends degree dwell just does automobile lawn mower engines High-speed racing engines McCoy Dooling etc turn over 10000 rpm can use dwells over 1200 draw excessive current however lower-rpm engines should set range 950 1100 ammeter should show battery current engine running about 1A amp less current dwell set too long models onboard battery pack wont last long using quick-box merely clamp favorite old sparker engine onto universal mount slide box behind clip three alligator-clip-equipped wires appropriate places Minus ground preferably right handy spot engine Plus point lead high-tension lead spark plug Its ready fire up drawing wiring dia gram parts list should enable anyone construct extremely handy device few tips using quick box Look circuit notice coil always connected batteries fear bit current will flow until transistors Base connection tickled Dealer Inquiry Invited 3405 Cleveland Ave SW Canton OH 44707 Ssnd$lforCutalog 84-6810 aRoUsH MFG 132 Model Aviation BUILDS QUICK3itukkrr r1FLIES GREAT Au Economical Clange ENGINE __________ 09 15 RADIO CHANNELS .-2 3 TOP WINGSPAN L WING AREA ..460 sqin FLYING WEIGHT_______ 38 oz WING L0ADINGll9 ozsisqf KIT FEATURES ALL 1ST QUALITY BALSA AND PLYWOOD MACHINE CUT RIBS AND HARDWOOD PARTS FORMED COWL AND WIRE PARTS APPLE MODEL PRODUCTS 7241 Kersten StCitrus Hts Ca 95621 TEL #916/722-7035 ONLY $4195 TOORDIN SEND EK se MO ADD 5250 niio coo $500 CA RES ADD 6Z TAX Super sport flier turnaround patternI Balsa & ply construction 70 span 927 sq area 7A -8A lbs139 75-12 co in