Radio Control: Electrics

Radio Control E lectrics Bob Kopski ELECTRIC RULESa follow up now late May about month since June MA hit streets June column may recall different strayed normal format instead offered thoughts first-time AMA Electric rules Surely thought anything would bring reader response would treading controversial turf Electric rules Now dont get wrong wasnt trying stir controversy Its just seemed like unavoidable risk associated true purposethe development first-time AMA Electric rules everyone can live withinitially Well date Ive seven letters reaction seven very pro suggestions made two names Electric modeldom first feelings toward seemingly small response simply guess really care Also felt because such little show interest maybe really too soon Electric rules first feelings quickly changed despite numerically small re sponse far pro feeling totally dominant cannot ignored course theres age-old question x number people took trouble respond almost took trouble respond Ten times hundred times more What really continues stand out no negative opposing responses rules suggestions Dr John Mountjoy WInston-Salem NC avid Electric flier new Electric Pronto Dave Robelin design originally Gasand favorite Bill Winter Craft uses Keller 25/12 cobalt motor Un known number g50 mAh cells weighs 52 oz files about 51/2 minutes using 8 x 4 Taipan prop Adams motor controller used response positive kind Mitch Poling Model Builders Electric columnist wrote July column summary rules fully endorsing supplementing additional suggestions Pylon ROW activities Add major endorsement further encouragement being least three scheduled meets will past time read using Duration Event rules suggestions can see Im feeling rather gratified far Regarding meets certainly appreciatethe willingness shown give try welcome field tests proposed Duration event naturally Im anxious see well everythingworks Whateverthe case Ill offer follow-up later issue now Thank did take time share feelings trying rules suggestions may fact making major contribution successful installation first-time AMA Electric rules everyone can live way question has come up concern ing suggested Duration rules what case tie suggest flyoffs made using remaining charge course must announced beginning meet Thus pilots doing very well should save little juice just case have deal flyoff situation fun burden deal As aside same June column concluded query asked show interest reprints MA Electric articles yours-mosttruly over past three years query brought grand total six positive responses date practical purposes such under50 Model Aviation Neat convenient conversion connecting battery charger up car battery four-wire automobile trailer light connector local auto-parts store Theres information column Fred Ewing Hatfield PA may seem bit pensive nervous because pride joy Leisure Playboy very firstand yet fiownRC plane Freds old hand small rubber-powered scale models 41 -oz Playboy shows superb craftsmanship Power system plain-bearing Astro 05 ferrIte belt drive swinging 11 xB 11 x 8 prop Battery six 1 2 Ah cells power control isa servo-driven On/Off switch Fred learned fly plane couple weekends taking would considered few hundred reprints needed sincere Thank yes~ respondents looks like no-go now just finished reading editorial Dan Santich July issue Model Airplane News writing Dan reflects years model trade shows what clues future RC aeromodeling offer Dan sees mes sage future big boom aeromodeling residing Electrics particular Dan envisions hobbys current largest modeling growth elementRC electric carsas being stepping stone similar large growth Electric model aircraft reflecting think hes right admit confess have viewed model car enthusiasts light before yes think todays drivers can tomor rows pilots Its natural herein lies invitation bit caution Ill put form plea Please remember frequencies model cars frequencies model alrcraftdont mix em future driver/pilotsa sincere Welcome Electric ARFs Let start off topic making very clear have opportunity fly Electric ARF market Among have flown Etude Several local modelers have shown up field Etudes asked check em out experiences can wholeheartedly unconditionally recommend Etude modelers having some prior RC flight experience suggest model folks have never flown beforethe Etude can bit quick some flight experience under belts simply want give Electric trydo consider Etude Etude excellent airplane flies best smallest optional propeller reduc tion gear ratio largest pinion Etude does fly standard radio equipment recommend use lightweight radio systems smallest servos 250 mAh pack Spare parts availablelike propsand plus However everyone far has lamented seemingly rather excessive costs involved structural spares does somewhat dimin ish otherwise total attractiveness Etude just case anyone wondering someone gave try out answer NO purpose simply consistent purpose columnto share Electric Elation everyone Folders sometimes get readers letters inquir ing about folding props like view myself having lot Electric experience have admit area relative experience deficiencyfolding props Stated simplyI havent used However Watts Up column Bob Sliff June MAN has considerable coverage topic interests lie area suggest check out issue column Bob names several folders sources supply Generally folders used Electric-boost ed Sailplanes best L/D lift-to-drag performance glide sought Most often folding props relatively large used gear drives belt drives large blades fold back along against fuselage poweroff state minimize dragthe devilish burden flying machines Folding props unfold whEn power reapplied refold power switched offso Sailplanes OTs too can what bestglide Continued page 151 DISTRIBUTORS INQUIRIES INVITED Call Paul Major 413 525-4110 maor decals Custom decals ManufacturersIII LNORTHEAST SCREEN GRAPHICS 21 FISHER AVE. EAST LONGMEADOW MA 01028 TEL 413-525-4110 IN-COWL FOUR CYCLE MUFFLERS 61 120 engines Designed fit inside cowls limited space UPRIGHT INVERTED SIDE mounted engines Mufflers bolt directly engine Exhaust tube points bottom side cowl Silicone exhaust extension tubing included JT-ENB JT-ENS JT-ERB JT-ERS JT-61B JT-61S JT-MAB JT-MAS JT-M2B JT-M2S JT-S6B JT-56S JT-52B JT-S2S ENYA 60-80-90-120 40 UP/INV ENG ENVA 60-60-90-120 4C UP/IN VSIDE ENG ENVA R 120 P0 UP/INVERTED ENGINE ENYA R 120 PC UP/INVERTED/SIDE ENG MAX PS 61 UPRIGHT/INVERTED ENGINE MX FS 61 UP/INVERTED/SIDE ENGINE MAX FS 60-90 UPRIGHT/INVERTED ENGINE MAX PS 60-90 UP/INVERTED/SIDE ENGINE MAX PS 120 UPRIGHT/INVERTED ENGINE MAX PS 120 UP/INVERTED/SIDE ENGINE SAITO PA 65 UPRIGHT/INVERTED ENGINE SAnD PA 65 UP/INVERTED/SIDE ENGINE SAnD FA 120 UPRIGHT/INVERTED ENGINE SAITO PA 120 UP/INVERTED/SIDE ENGINE 2700 2700 3000 3000 2000 2000 2500 2500 2700 2700 2000 2000 2700 2700 m N E mU m m 164 School St Daly City CA 94014 415 756-3400 September 1986 51 *7 GIant Scale16 Sheets *60 Size38 Sheets *40 Size38 Sheets * Propeller Decals WT 8 Sheets 3 sizes * Kill Markings .. 12 Sheets * Nomenclature Markings 3 Slzes-12 Sheets Black copy * Letters Numbers 1 2-3-4 4-13/16 10 colors * Stars 10 colors 11 SIzes plus Sheet Assorted Sizes Major Decals pass flying colors Sedts/Otk4wc/gate B Bottom Tube 5 Side Tube Easily made produce smoke hrvruedote slnwt cle MO v Mc coo 5 ovoble hobby shop 080611 OSSOT occaptad Add $250 iPa OO C00 ond 6% sm los cf radentameS ~nsuiu \YIi2LJJLii Slowand EasytoFly irs PARACHUTE ITS ULTRAUGH1 ITS Great Camera plane Become aerial photographer pIctures camera mount Included remarkable windbag owes itt exceptional flying handling characteristics patented FlexifoilSoftwingThis aero foil shaped nylon envelope inflates air through leading edge moves forwardThe leading edge supported fiberglass spars mounted softwing beautifully made 12 squar foot wing does require finishing color already Colors Red Yellow Orange wing very strong virtually unbreakable yet will fold down fit pocket THERE CAN BE NO BETTER INTRODUCTION TO RADIO CONTROL wing mounted top king post Windbag has very low center gravity totaly self stabilizing virtually attitude soon realease controls will retum level flight stalled condition full up ne idle aircraft will sink almost vertically like parachute can used get out panic sitituation model will climb loop roll around chute can remove king post race air car can hold windbag pylon races large balloon wheelsfumished give great d clearence EASY TO BUILD EASY TO REPAIR windbag kit completeAII needed complete model engine 40 60 three chanel radio fuel tank has much success using new four stroke engines WIndbag 36 high 331/2 long 91/2from center engine shaft ground 24 between rear wheelsFuse 19 long wing 12 SqFL 2Ft 6Ft IEXXDN PO Box 420496 MIAMI FLORIDA 33242 PHONE 305 634 3630 RC ScalefWischers Continued page 142 will set up quite slowly shock struts solid aluminum bored Out accept spring Springs wound lathe over mandrel using back gears slowest speed support weight li-or 12-pound model calculated springs should have about 10 turns 046-in-diameter music wire hobby shop size 312-in outside diameter Extra turns close-wound spring ends length can adjusted compensate varia tions model weight small inaccura cies strut lengths extra turns can cut away small increments using Dremel grind er cutoff discs Tuf-Grind wheel word caution about large-diameter grinding wheels new largest diameter wheels impose quite load grinder motor Prolonged usage causes overheating can lead motor burnout smaller Dremel cutoff discs dont impose load vulnerable breakage due brittleness Choose own risk Wear safety glasses Tuf-Grind wheels worn smaller diameter risk overheating Dremel motor reduced Wood portion struts treated good filler sanded simulate ap pearance steel struts used prototype Hobbypoxys new Fast Fill does good job filling grain joints provide metal-like appearance Note rear struts bent inserted brass fittings lower end music wire threaded assembly nuts described July 86 column Weldon Smith advises threading job made much easier annealing wire end places wire vise used heat sink end threaded protruding heats wire red white heat lets cool slowly wire soft threading use landing gear shown photo will deflect due landing loads top end adjacent nut plates fasten models wing portion wire encased wood will bend great amount gear legs shrouded wood music wire would bend same point because stress concentrated due leverage Bob Dolly Wischer 5-221 Lapham Peak Rd Delafield WI 53018 RC Aerobatics/Van Putte Continued page 49 stand 30cm above ground line motor third also about noise con clusion flight judge will independ ently score model in-flight noise level indicating model too noisy average very quiet majority judges score model too noisy flight score will penal ized 5 points counting judge ma jority judges score model very quiet flight score will receive five point bonus counting judge sound good especially theyre enforced several years Pattern wane days big contests seemed over gas crunch hit back 1979 contests folded lack entries several struggled along 20 entrants Now Im hearing reports 71 contest 60 another last contest Coonass Na tionals Lafayette LA hoping theyd get no 50 contestants because can have two flight lines flying site 51 would have managed 5 rounds weather hadnt balked during fifth round causing early end Pattern back Ron Van Putte 111 Sleepy Oaks Rd Fort Walton Beach FL 32548 RC Electrics/Kopski Continued page 51 Excessive elation photos local rubber modeler Fred Ewing Fred has long history Peanut FAC Flying Aces Club rubber participation excellent craftsman Being local convenient him attend last years Electric Fly spectator Being used quiet flying Fred immediately took interest Electric Never having flown RC before Fred start scratch Sometime during winter called described what thought wanted try Something easy fly flew slow sounded like Fred needed Playboy Since expert rubber modeler knew sticks excellent Old-Timer would no problem knew firsthand experience Leisure kit would fit flying needs So Fred got kit radio power system showed up field April Saturday morning Everything worked perfectly Straight off September 1986 151 Dealer Inquiries Invited IDEAL FOR SPORT FLYING AND COMPETITION UCoiioILineHandW board say nothing trim out handed box Fred no trouble getting hang third weekend first-ever RC flying Fred green sticker local language means passed flight test able fly instructor assist fastest Ive seen anyone accomplish green sticker done about slowest Electrics Ive seen Ordinarily wouldnt devote sever al picture captions such story this particular has lot tell First follows nicely last months column wherein made certaln specific recommendations first-time Electric fliers can see what extent story supports last column Also its another specific case someone learning fly RC scratch Electricwe have several such modelers locally OT like Playboy may bit construction challenge inexperienced builders docile dream pussycat first-time RC pilots Finally non-blow-a-hole-in-the-sky moderate capabil ity moderate cost power system extremelywell suited described need Its now about five weeks since Freds first flights last evening flying session two days ago Fred muttered some comment after at-his-feet landing like just dont know much pleasure can stand Well well find outif Fred survives joy overdose cause hes now building Astro cobalt-powered Astro Viking hes Olympic 650 conversion hes buying another radio Charger connectionsagain Most modelers use familiar specially-designed Electric chargers faced chore connecting clip leads auto battery terminals Frequently latter terminals large bulky making difficult get small charger alligator clips place too battery terminals often quite dirty corroded taking away purity Electric power What Some months photos show ap proach problem Local modeler Herb Dirks concerns mentioned above plus two cars overall solution purchase two sets four-conductor male/female auto trailer connector sets local auto supply store particular connectors came outfitted II BRASS CLAMP FOR CABLE ADJUSTMENT Hi-Tech Design ComfortableCompact Engineered Long Life HIGH-STRENGTHMultiple Line Spacing sitivity Control 9 Manufactured Sagan Induatnes Inc 3614 35th St LIC NY 11106 16-gauge wires Herb arranged four wires two sets two wiring female connec tors battery vehicle pictured Hethen used remalning male connec tors replace familiar charger clips agaln using two sets two wires connecting charger cord place clips result small effort big reward Electric convenience connectors always place under hood always ready accept matching mate charger four connector pins two parallel sets two make excellent electrical connection no need mess auto battery posts directly removinganunpleasant aspect Besides Herbs motto Gas guys must shower after flying Electric guys may shower before cost few bucks hour effort Gee Could really Bee call last week established Grand Master Electric ModelerKeith Shaw Ann Arbor MI year Keith seems outdo last word accomplishment year previous 1985 Keith dazzled Toledo KC Electric Fly overwhelming majesty modeling piloting DeHavilland Comet racer year Toledo-goers saw Keiths latest secret weapon has special purpose behind itto demonstrate Electric can fly anything Gas will Keith called question whether could guess what unlikely scale monoplane Electric since Toledo pondered got first time cause everyone knows Bees cant fly Well Keith flew Gee Bee R-1 first time day tells over-five-pound 10-indiameter fuselage 30-oz-per-sq-ft-wing-loading model hauled off about 50 feet its 14 cells connected via wide open Jomar 5C4 speed controller geared Astro Cobalt 25 14 x 8 fanand rest flight just great too dont think theres much sayfor Keith says something thats way doubt itcome 86 Electric Fly satisfy yourselves fact thats reason Im including photo get come out Besides hasnt sent yet Another endingfriends Pleaseforward com ment question SASE please Bob Kopski 25 West End Dr Lansdale PA 19446 please very careful risk mental physical well-being overpleasuring yourselves Electrics Excessiveous Elation itisjust imagine what such occurrences would already tenuous AMA insurance situation CL Combat/Johnson Continued page 68 possible de-tune engines lowering cylinders installing special cylinders modified intake exhaust timing glows will still lot faster diesels will disadvantage pulling around heavier models general handling Except cold-starting diesels have glows beat ease handling No battery no need refuelsince two ounces fuel will last whole match dry weight almost 16 oz offset glows need fuel board make full match ready-to-fly diesel may weigh ounce less glow No need throw Nelsons awayjust install tank smaller venturi some experimenting next column might able find out optimum venturi size According FAd Team Selection Committee Chairman Paul Smith next trials will run using current rules summer 1987 Since appears 1988 World Championships will run using new rules might good idea run trials using same ruleseven though people may have some old models left over World Champs just around corner well see what happens get everyones thoughts trials should run personal thought subject may have accidentally gotten event everyone can fly 152 Model Aviation CORRECTION Last month let piece misinforma ton slip through page 138 Olympic II should have included list easy-to-convert-to-Electric Two-Meter Sail plane kits since Two-Meter plane Apologies all