Radio Control: Electrics

RADIO CONTROL ELECTRICS U r1 U V11.9 4 THIS MONTHS TOPICS include meet announcements some mdustiy new product info some reader reactions topics past Gordon Wheeler 5 Old Farms Lane Cazenovia NY 13035-9444 Tel [315] 6559068 Fax [315] 655-3824 Voltaires Club Central NY wrote tell us years Annual Electric Fun Fly July 19-20 Last years meet drew attendance six statesits good Ken Myers 1911 Bradshaw Ct Walled Lake MI 48390 Tel [810] 669-8124 E-mail 10257534 l0ompuservecom sent info 1997 Mid-America Electric Fliesback-toback meets July 12-13 really big happy affair day sponsored different cooperating club Electric Flyers Only Inc Ann Arbor Falcons years meet will held Midwest Radio Control Society field Northville Township MI meet format popular low-key fun-fly plus some competitive activity combo weekend features popular pot luck picnic Saturday evening Electric fliers skills welcome Info available Ken Keith Shaw 2756 Elmwood Am Arbor MI 48104-6624 Tel 313 9736309 Chuck Hill 1382 Deerfield Court Concord CA 94521 wrote announce Concord Model Engineers Second Amual Electric Fun Fly September 211997 site Bay Area Radio Control Society BARCS field Last years first-ever meet drew sorts Electrics Speed 400 Astro 90-powered craft plus plenty spectators Chuck sent photos impressive representation looks like mini-KRC meet respect model quality variety 18th KRC Electric Fly September 1921 new Queen City Airport site Allentown PA huge site could readily accommodate twice 224 participants present 1996 Get details Meet Manager Jim Wolstenhoime 211 Colonial Rd Perkiomenville PA 18704 Assistant Manager Anthony Assetto 639 Neshaminy Ave Wamngton PA 18976 Tel 215 491-9419 can also leam KRCs Home page http/ourworldcompuservecom/homepages/ge orgepoos_2 B&T RC Products 508 Lake Winds Trail Rougemont NC 27572 Tel [919] 471-2060 favorite supplier Sanyo cells motor packs pricing service best Ive found recently obtained some new Sanyo 2000 cells B&T am about tiy em out Billy Russell tells eventually old standbys 14 SCRs 17 SCRCs will discontinued 2000 taking place Good news hand overall costly Well see what future pricing brings Physically 2000 almost same longtime favorites slight dimensional variation just made up two new packs SCRCs former 4 ounce heavier Ive mn 2000 pack bench definitely displays capacity other expected small label visible cell B&Ts test-mn data cell test cell matched-cell sets packs can assured Modelair-Tech has new address Box 1467 Lake Grove NY 11755-0898 Tel\Fax 516 981-0372 E-mail thunt95 147@aolcom Along new address some organizational adjustment Bob Aberle former business partner has retired particular pursuit leaving capable hands former partner Tom Hunt wife Eileen Larry Sribnick chief modeler SR Batteries has introduced some new E-modeling goodies Continued page 100 July1997 95 new Sanyo 2000 cell available B&T RC Products Authors adaptor expands use Ace R/O Smartest 5-21 cells destined replace 14s 1 7sdetails/address text higher current Possible future MA article Smartests small size permits convenient use authors fuselage rack Optional external connection line charger output End-of-Charge Beeper See March 1997 column Example wiring technique inline version End-of-Charge Beeper Note lead tie-downs First up publication pair product called RC Techniques other Electric Eight Techniques available individual volumes subscription new volume published month categories altemating Techniques published 8/i x 11 format prepunched standard threering binder beautifully printed highquality paper Thus can compile two books wishone RC general E-flight nice thing about such book does become obsolete continuing flow inserts arranged topically intended update information given subject areas Ive often wished some mechanism doing own columns past 13 years Techniques written knowledgeable contributors speciality fields sizeable growing list authors SR Batteries Inc Box 287 BellportNY 11713 Tel 516 286-0079 Fax 516 286-0919 E mail 7416775lttompuservecom paperware above part expanding SR story What described beginning new product line presently available X440 442-square-inch ARF E sailplane geared motors 400 similar size category Larry prefers call X440 Custom Built model airplane covered ready equipment installation SR also making available complete package version includes radio motor etc new E-airplanes way Ive using relatively new product Ace K/C called Smartest Im very pleased Smartest simple small convenient device intended precisely test capacity receiver transmitter batteriesit does great job E-ffiers may have extra interest because us use 270 mAh receiver packs generally sensitive pack condition bought Smartest reason because over years Ive accumulated sizeable number Electrics its difficult otherwise keep track equipment status Smartest contains no batteries power supplyit powered battery under test has switches set up four- fiveand eight-cell packs three levels load test current choice 125 250 500 mA constant-load current placed battery built-in LED readout displays milliampere-hour capacity discharge done Done pack voltage declines about 11 volts per cell little less shutdown automatic dont have present shuts downthe Smartest remembers what read display can inteuogated whenever get around photo shows Smartest nested fuselage middle fuselage rack Im impressed product found myself getting bit greedyI began imagining bigger better version could use battery cell size cell count motor packs Another photo shows Smartest accessory built built adaptor accommodates packs five 21 cells discharges constant two-Amp rate Smartest interfaces adaptor thinks its testing fourcell pack A-amp rate adaptor designed whenever 100 Model Aviation 4RC Electrics/Kopski Continued page 95 Concord California Model Engineers first-ever Electric mee years event will held September 21 Chuck Hill photo BRO KEN Aero & Marine Engines Rebuilt ired ted K&B can make engine like new again need send us K&B engine will repaired original parts repairs guaranteed Send engine free estimate 5204533 579 2100 College Drive Lake Havasu City AZ 86403 NOTE Some engine mw noT servioeobie Sue ope cooSSon please 001 esenSog 0 engne pack under test declines 10 volts per cell Smartest thinks pretend four-cell pack has reached its 11 volts per cell shuts down also shuts down adaptor interrogated Smartest will display capacity thinks Ijust multiply reading four get real number actual battery under test Its generally recommended newly assembled motor packs slow-charged discharged times before subjecting high-rate charging methods used flightline tends equalize members pack affords longer pack life Similarly recommended process repeated periodically extend useful life pack Ijust needed convenient way Smartest provided foundation adaptor new Im still nying out continues going well Id consider candidate reader construction future Readers have reacted strongly End Charge Beeper Mareh column Apparenfly EOCB has found welcome sizable number E-flyers Im gratified reaction So far everyone has contacted has built Several readers experienced some confusion information presented assembly drawing schematic correct agree other build assembly drawing schematic EOCB will wo& skilled readers know too much got themselves quandary studying both drawings too hard Because nature LM324 quad op amp several different sets pin numbers will actually work varied combination circuit inadvertently included schematic its particular pin numbering developmental version EOCB never saw because proofread both drawings both correct Im sorry inconvenience still considering project suggest its easiest build assembly drawing one-for-one equivalent column photo just above drawing itself reader misunderstood purpose function EOCB used tell packs have peaked rather alerts charger has stopped SCALE CATALOGS SPPS 160 Supersrale Cmstnicton PIaS$500 SPPS 1200 Documentalim Photm 3Vs$500 ASP Model Araat ConsOuction Hans$500 ASP ScaioArooft DmMngs 3Vs$500 Add $500 Es Air Overseas 1/5 Sc WINNIEMAE 100 2 Pc Wing Plans $3700 Jim Pepinos SCALE PLANS & PHOTO SER VICE 3209 Madison Ave Greensboro NC 27403 AsCPHONE/FAX 910 292-5239 July 1997 101 tries Radio Brushless DC Motors re 01 agO penormance Brushless motors tall line kits have machined cat 4l LA dUb GIC noun USA Anvn hvv vvmnlntn line vi lirnnt nirive geared motors ig low $299 new 20 oz 12 MOSFET Hi Perfermance Hybridrive Microprocessor booed controller Available Special Introductory Price $15995 very limited timel Ave ox Inc 31324 Via Colinas #103 Westlake Village CA 91462 Phone8lB5978915 Pax 8185970817 hltp//wwwaveoxcom info@aveoxcom PRECISION FIB ERGS Hundreds cowls radial cowls & wheelpants Strong lightweight one-piece construction Exact duplicate manufacturers original Phone orders information call 4239840828Send $100 catalog $200 Outside US 9am 6 pm EDTDept 3 ______ 2805 Big Bend Dr ville TN 37803 different reader reaction came about photo top page 110 March column photo illustrated potential danger Deans male connector end dangling near exposed ends motor pack cells reader thought stupid have exposed cell ends first place made realize perhaps other readers also familiar motor battery pack assembly technique cells hundreds have exposed ends airplanes tens assemble own motor packs nearty always arrange cells reference photo shows cooling air freely flows between among cells Almost everyone fly does same thing other hand also routine commercially manufactured packs packaged heat-shrink tubing no electrical exposure dont recall seeing made way electrically safer have such total pack enclosure still prefer cooling opportunity afforded assembly technique Besides its highly unlikely Id sue myself having cells ends exposed unsafeno matter Deans connectors would ever fall upon em about cooling air January 1994 column included discussion graphs LESS HASSLL MOE Nil intlight motor battery temperature Dieselize Davis D1my usual cooling air flow blocked ieseThis actual data acquired flight Its Awesometelemetered ground-based receiver data logged laptop computer 0% Fbwerflightline Easy Sg shows no question low Plugsthat such coohng airflow through aircraft over past motor among llvice Longthrough cells motor batterydoes e Soundhave significant effect component temperatures DAVISSo ends another column Please enclose MOCEL ox 141 Dept MA ord CT 06460 ASE correspondence complete information packet send $400 credit applied first orderlyoud like reply Giants Help Promote Competitive It,go. ying Large RIC Air Craft membership includes quarterly magazineHigh FlightI MEMBERSHIP APPLICAllON IJ NEW l RENEWAL Date 19 I Yearly Dues $1500 USA $2000 US Canada & Mexico $3000 US ElsewhereI Make CHECK MONEY ORDER Payable INTERNATIONAL MINIATURE AIRCRAFT ASSOCIATION INC I Name __________________ Phone ____________ I Street ____________________________________ P0 Box/Route Box ________________ _________________________State/Province __________________Zip 1City IMAA _______ AMA Number________ MAAC _______ Chapter_______ L TO IMAA Secretary DONE VINEYARD 205S HiIIdc Road na KS 67401w inm m 102 Model Aviation FOR PRICES & fr-IFO PKO MUD DUCK AVIATION 7118 Westmoreland Dr Warrenton VA 221 86 5401 347-1134 ION OWEN