Radio Control: Electrics

Radio Control Electrics Bob Kopski ERRORS two errors article Mods DC/DC Super Charger Sep tember 1987 issue MA both occur Circuit Board Pictorial Figure 4 page 83 First labels two wires interchanged wire connected inal capacitor C2 should labeled Green wire charger ckt board wire connected cathode dark band diode Dl should labeled Yellow wire terminal strip wires shown correctly assembled circuit board photograph Schematic Figure 3 both same page page 83 Second BASE EMITTER labels associated transistor reversedbut correct schematic Figure 3 means transistor BASE lead should inserted EMITTER shown pictorial vice versa COLLECTOR location correct shown Most transistors will have leads fall naturally Pattern sure check particular type selection have Failure correct described errors will cause modified charger have high output current independent control knob setting should cause component failures provided youve tried use way Proper operation should commence corrections made anyone needs additional assistance please write Ill best help sincerely regret disappointment inconvenience caused errors Im embarrassed could die checked part manuscript cant stand Im going Acme buy some hemlock juice know wont seem better tomorrow wake up now late June late evening Ive just started putting months column together October dated installment should hands early Septemberjust weeks before Eighth Annual KRC Electric Fly September 19-20and new field location newcomers Electric column meet definitely largest Electric meet East possibly largest country maybe world Attendance Electric Fly recent years has represented 23 states Canada have 135 flyable Electrics flight linehonest cant think single model type has flown except Helicopter Some workmanship piloting have truly out standing atmosphere has always quietiy thrilling still have time plan years meet need info can contact CD Bruce Fenstermacher 636 Schoolhouse Rd Telford PA 18969 telephone number 215 723-0470 youre preparedto fly least come prepared dazzled sightbut no soundof modeldoms future Electric bring some friends too Two Electric clubs should know about located Northwest East first Puget Sound Electric Model Fliers PSEMF special interest group SIG computerese Boeing Hawks RC Fliers can get some particulars writing acting secretary Bernard Cawley 29838 48th Ave South Auburn WA 98001 Membership mere 500 pennies group has nicelooking newsletter entitled Charge Ahead Next Westmoreland Electric Soaring Society has just AMA chartered first Electric club Greater Pittsburgh PA area two principal founders club President Bob Markie Unit 23 Sandy Hill Rd Irwin PA 15642 Vice-President Neil Rossi 3947 Murry Highlands Circle Murrysville PA 15668 As new club group would enjoy hearing other clubs course welcomes newcomers Electric persuasion point Id like encourage Electric clubs/groups around country drop note details pertinent organiza tion Ill pass such good info along right future columns too often get mall Pencil points battery compartment reinforcing strip used BobsCaliph small strip cloth handkerchief dipped slightly thinned water Titebond plastered fourcorners boxafterfirst coating wood glue letting dry Snug fit foam-wrapped battery pack fuselage wont breakthe side/tormergius joints Note absence side doublers fuselage answer requests neres wnas uoos customized Caliph wing tips look like before covering several small pieces Mono Kote Most agree design Just looks better curvaceous tips 46 Model Aviation Bob killed two birds stone motor/battery cooling system air exits through hole also provides easy access servicing pushrods Kyosho 360 PT motor nestles nose Bobs Caliph motors prop-adapter stud too small props having 1/4-in bore suitable bushing made few wraps 1/4in-wide autostriping tape guy anywhere around flying Electric Maybe just doesnt know others nearby Let help loose wires out connect larger circuit Keller motor nomenclature Back July issue made reference Keller 25/12 time asked readers anyone knew what numbers meant Im happy report two fine folks responded very quickly enlighten regard above-referenced Ber nard Cawley other Steve Neu well-known highly regarded West Coast Electric modeler thank both ofthese gentlemen having interest taking time pass along infowhich now pass along everyone else 25 part number short 250 watts Would believe very sort thing advocate motor ratings/specifi cations see MA April 1987 Now 12 part number means something like 12 volts 12 cells almost same thing least something close uncertainty dunno Steve passed info alongI hope Im properly presenting indicating some slight discrepancy area respect some Keller product line July 87 column also lamented 25/12s nice working motors two have made bad initial impression contained some loose metal particles both loose rear ball bearing assem blies Neither nice find such costly motor again Steve kind enough explain loose particles result timing screw hole being drilled after motor fitted together test run particles quickly find home housing magnets after short run motor hes never seen ill come existence OK Iguess thats still nice andthe ball bearing situation good either Whatever again thank responders welcome such inputs readers same column concluded truly enjoy sharing exchanges withyouandthat fact exactly what meant Motor mount revisited Back same July issue two photos illustrated unique very versatile motor mounting system strapped motor mounting plate using two clamps made Sullivan Golden Rod inners time technique new just employed then-new Caliph installa tion no background actual use idea Well thats changed As writing have accumulated 133 flights six different motors clamps work very well indeed Ive motors out repeatedly means screws Golden Rods have removed reinstalled many times put simply stuff works just great heartily recommend motor mounting technique remaining reservation being have yet flown cold winter will happen too soon Caliph most-often-asked ques tion about model concerns pronunciation its name Ive saying Kay-hf Some others insist must Kal-leaf So would know sure Ted Davey DSC course So called Ted order end ongoing flight-line discussion real answer Kal-leaf As item interest name Caliph Middle Eastern title distinction Continued page 141 Now can fly day worrying about low battery control glitches Just plug JOOSE BOOSTER' between flights top-off both transmitter receiver batteries simultaneously JB safe types RIO systems using 96V & 4 8V rechargeable battery packs 95 Shipping FREE $ 95 AZ residents add 65% Jnone anoste ns product aeli Rock Industries jiO~o Great Coverup L JOXTM Dust dirt among engines worst enemies can greatly reduce life prized powerplants So complete modeling accessories hy ordering set MODEL JOX yll protect engines save money Order Yours Today Special circuitry protects overcharging output full sunlight solid 100 ma JB charges cloudy days Joose Boosteri Dont leave flying field track water 90 day warranty Checks Money Orders accepted 10251 N 56th Dr dale Arizona 85302 6029378750 SIONIVCRII8 tO Easily secured model seconds Fuelproot stretch fahric conforms ne/muffler shapes Long life Velcro fasteners Attractive assorted colors 2 1 /3A thra 25 engines $200 40thra 60 engines250 6Othru t2nengines300 COMBO PACKAGE lull three ahosel6486 Hny t79 n 861 Add $100 shipping Sndanu Anan 86316 Arizona residents add 5% tan 421 254tsS RANTEcO *7 Giant Scale18Sheets *60 Size38Sheets *40 Size38Sheets *Propeller Decals inWT 6 Sheets 3 sIzes Ca *Kill Markings12Sheets *Nomenclature Markings 13 Sizea -12 Sheets inBlack white copy * Letters Numbers 1 2 34 413/16 10 colors * Stars 10 Colors 11 Sizes plus Sheet Assorted Sizes Major Decal pass flying colors SedtdssAO6o4wc4ate DISTRIBUTORS INQUIRIES INVITED Call Paul Major 413 525-4110 major decals Custom decals Manufacturers ~4I II LNORThEAST SCREEN GRAPHICS 21 FISHER AVE EAST LONGMEAOOW MA 0102R TEL 413-525-4110 Oof October 1987 47 Arc welded seams Durable lightweight construction Frequency filter Pressure nipple Side mount screws Grooved flange positive grip Stacks different lengths Breakaway straps prevent engine damage case crash Silencers d Pipes Manifolds Complete line high quality exhaust systems Super silent tuned pipeseasily adjustable combining top performance effective noise reduction Manifoldslarge variety difficult installations Tuned exhaust systemsunbelievable selection different gas car systems available Versatile compact silencers easy installation Lightweight durable plus much morel See local dealer STM catalog high performance exhaust systems ULi/M UNITED MODEL PRODUCTSA division united Model Distributors 301 Holbrook Dr Wheeling IL 60090 gaIn Robert E Byrd John Cole Steve Hosner Bill Winter others have bitten infective sting Simitar will bit understanding Maybe youll offer encouragement better yet ask let have turn stick flies just like other aircraft better real issue understand flying wing itself what stands Its changes being offered out flying field Most changes improvements advance sport Too often model aviation life change rejected because attitude hearsay has no basis fact People forget change fulcrum progress Its rewarding find out facts yourself trying something own keep open mind about change both innovations see around today well yet come Join flying 21st century RC Electrics/Kopski Continued page 47 appropriate plane feel guess what Ted himself has acquiesced popular mispronunciation says Kay-hf So take pick Now thats settled lets get some serious aspects same plane Let comment am trying bore saturate Caliph Surely plane world newest contemporary Electric source lots useful information interested readers may working similar planes Caliph test vehicle what may extensive power system/plane study ever done addition just plain like plane really flies great dont know what-all accounts its unusually good flyability sure has got flies well have no qualms about suggesting consideration know two now being built club because fact like much Im planning build second Varied Caliph power systems just men tioned last issue promised coverage very matter month Well didnt quite get flight evaluation different systems completed month Ill limit reporting direct-drive systems save story speed reduced system performance future Anywayjust show what has flown far listing motors battery sizes Battery data given number cells cell size Keller 25/1212/800 Astro 15 cobalt 12/800 Astro 15 cobalt geared 12/800 Astro 05 cobalt geared12/800 Astro 05 cobalt geared9/1200 Astro 05 cobalt geared7/1 200 Astro 15 super fer ritei 2/800 Kyosho 360PT geared9/1 200 Kyosho 3605T7/1 200 Kyosho 3605T RPB gears7/1200 actuality real list combinations extensive because entry above will flown prop addition combination first bench run voltage/current/rprn/prop/ power information Folks no small project Caliph direct drive recommendations Before getting details let first describe typical flight three good power systems flight nearly consisted taxi grass field including just cut needs cut conditions taxi followed convincing takeoff climbout fol lowed few high- low-speed flybys touch-and-goes Mixed some just cruisin around some climbs altitude spindowns some inside loopsincluding inside loops level flight after full five minutes flight Typical flight duration exceeded six minutes After many such flights can now strongly recommend Caliph direct drive Astro 15 cobalt Astro 15 super ferrite Keller 25/12all 12/800 batteries can recommend Tornado nylon Top Elite wood 8 x 4 Top Elite 7 x 6 wood like 9 x 5 or9 x 6 TopFlitewoods onthe25/12 latter combination producing highest peak power/climb rate does necessarily exclude other props/brands situation just ones have therefore have used interestingpointthat came out both bench air two Astros indistinguishable performance Physically super ferrite larger heavier cobalt its cheaper Decisions decisions again both work very well Caliph either power easily flies regimen described previously can also say some geared systems worked quite well fact Id quite comfortable flying plane However far can match flyability ofthe direct drives plane Continued page 144 October 1987 141 RC Electrics/Kopski Continued page 141 As fate planned happen very day brought letter John Mountjoy WinstonSalem NC John has flying Pronto design 25/12 see photo page 50 September 1986 issue MA has recently tried speed reduced installation Pronto ways similar Caliph Guess what John reports direct drive works better As aside John first after modify Astro DC/DC Super Charger see MA September 1987 did rough sketches some photos sent him last December same letter reports dification works very well indeed Thanks timely info John Back subject hand combinations above capable performance excess 150 watts full throttle mention because about three pounds all-up translates 50 watts/pound friends number recommended Rule Thumb Number Two April 1984 issue MA good Electric ROG performance however just power level involvednot takeoff in-flight well have two immediate examples mentioned geared systems varied combinations tried far operated about same power levels direct drive combinations offered takeoff perform ance direct drives despite careful attempts prop pitch selection aimed getting right speed another case RC car motor turning 6 x 4 over 16000 rpm comparable power input just barely made off ground thereafter flew very unimpressively So power alone whole storybut necessary part Properly utilized power adequate level means whole lot theme will discussed later Other notes considerations Last months column included some Caliph photos illustrating steerable tall wheel also noted rear cooling air exit part photo showing hole somewhat unclear Im including another photo month shows detail clearly Im making point because flight testing described above has really put screws motor batteries constant flight-charge-flight-charge rou tine typical data gathering flying session turns out airflow through model together running power system fullbore throughout entire flight always resulted batteries cool enough landing allow immediate recharge have always favoredgood air-cooling practice especially long flight sport flyingthe sort thing readers seem favor New heavy gauge wire Todays mail also brought another goodya sample some new high flexibility 12-gauge wire Jomar very reliable supplier experience wire has 665 strands very fine wire made up seven bundles 95 strands carefully twisted wire fits Sermos connectors just right wire packaged five-foot length red black two pieces total $6 plus another $1 shipping new product supplements existing 16-gauge high-flex wire priced same six-foot lengths Write Jomar 2028 Knights Bridge Drive Cincinnati OH 45244 Tell Joe Bob sent ya matter thoughtful responsibility enjoyable conversation John Sermos Ser mos RC Snap Connectors few days ago John commenting amazing growth day daythat Electric enjoying noted particular real advantages Electric surely accounts significant part growth could easily become gross disadvantage Electric model aviation general advantage referring ease Electric can flown just about anywhere schoolyard local park company parking lot church grounds etc Yes Electric flies very easily such places thoughduI act responsibly Dont just trespass Go whomever appropriate explain what youd like request pennission Dont let Electric anything else give model aviation black eye Electric can open up multitude field opportunitiesif donepmperly always flywhatever flycarefully Thanks John Sermos sensitive insight Please send comment question SASE please Bob Kopski 25 West End Dr Lansdale PA 19446 See ya KRC Electric Fly responding advertisers mention read about Model Aviation PRODUCTS FOR ThE DISCERNING MODELER Complete Line Exhaust Systems * Tuned Pipes led Tuned Pipes Headers uri Mufflers Expansion Mufflers Helicopter Ball Mufflers ialized Exhaust Systems Unsurpassed Workmanshia 8 Performance GOIITIOLIIN TANKS 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