Radio Control: Electrics

LAST MONTHS COLUMN opened some personal notes included among other things explanation Ive re sponsive letters few months strive get back normal regardwherein nor mal means respond reader mail promptly write late October still have en ormous pile mail desk dating back late summerwith accumulating nearly day put things perspective reader mail given month normally demands significantly time work writing column personal situation still does allow read ily accommodate mail must continue ask indulgence regard Again things normal Ill let know youre wondering what about please review January 91 issue Electric Connection Service now 13 months old having introduced Janu ary 1990 issue Over years period readers have requested listed col umn service attempts connect local Elec tric modelers unaware other ie feel ones flying Electric Because service has proven suc cessful will continue column fea ture long readers continue ask sistance Just let know writing presto Greg Poulos ill Bethpage NY checks out Dads American Eaglet Leisure kit Modified model has ailerons added utilizes Astro geared 05 cobalt seven SR 1800s turn 11 x 7 Graupner prop Ed Berchtold Lambertvllle NJ brought Super Doubler II MA May 87 1990 Bur lIngton Co NJ meet Ed chose use direct-drive Astro 40 18 1 200-mAh Ni-Cds motivate wet design Robart HO 500 speed controller allocates juice 10 x 6 Fok ker Series Master Airacrew Plane design details Include weight 95 oz up 650 sq wing symmetrical section Eds second Electric no longer flies wet power system discussed months column An Electric power installation consists three things motor battery everything else latter item normally made up connectors motor controller switch fuse etc connects first two together Kopskis ongoing mini-series will discuss make own custom Electric installation name will appear right Model Avia tion Remember takes about three months happen month features following folks whod like hear other Electric fliers area Bill Bates 20 Hemlock Drive Glen Mills PA 19342 1-215/459-4882 member Sa lem County R/C Club New Jersey SAM 66 Wilmington Delaware modeler long experience Chris Stratton PO Box 52 Canton Center CT 06020 has special interest home-brew speed controls also acknowledges still flying some fuel-to-noise converters Thats okay Chris theres still enough time right wrongs world including 38 Model Aviation Radio Cono Electrics Bob Kopski 25 West End Dr Lansdale PA l446 THIS MONTHS TOPICS 1 Same personal notes 2 Electric Connection Seivice 3 motor/speed control glitching 4 Reader pref erence question unanswered 5 Vintage RC Electric othenvise 6 Electric installations Whats going bearded man seated middle Larry Sribnick SR Batter lea day 90 KRC meet Larry held battery clinic interested panics drew lot attention can seen addition supporting meet prize material Larry gave prizes anyone won event SR batteries Thank Larry Bob Ortman 631 Sobrato Way Campbell CA 95008 Aside finding locals Electric persuasion Bob would like hear folks interested Electric ducted fans users Keller motors William Dashiell 9405 Gwynndale Drive Clinton MD 20735 new RC Electrics tells local club parts has no problem shared Electric fliers can take forms glitching caused motor noise column has addressed matter times over years offering sug gestions try particular instal lation thing have learned no single solution glitching problems because installation equipment var iables Thus Id normally expect several po tential solutions may have tried find ones work Ive recently heard new glitching story continuing spirit providing Electric help Id like pass along fellow club member has having such problems long time Basically suggestions date have fully successful including chokes Ive mentioned several times way have proven great success readerssee MA December 89 symptoms situation mostly motor changing speed control surface movement air looked sounded just like other glitching situations case however turned Out receiver voltage also powers speed control fluctuated servo moved voltage varia tion turn affected speed control opera tion case radio staticit seemed like several things can come play First course given speed control must sensitive variation re ceiver system voltage Some controls Some much less must actual variation re ceiver system voltage likely occur servo moved because thats largest current demand takes place Such variation could Continued page JSI February 1991 39 Electric fliers Mercy Lets get problem fixed folks EX Rena 250 kit EZ Built Arthur Knowles Woodbridge VA uses direct drive 25 fourteen 1200 mAh Ni-Cd cells Weight 4hz lb wing area 350 sq Plane placed third Saturdays Best Gas De sign Conversion 1990 KRC meet George Lucia Hillsdale NJ sent sign times Its Bergen County NJ Park flying stopped due noise complaints Modelers convinced County Parks Commissioners allow Gli ders Electrics new club Bergen County Silent Flyers created Inter ested joining Contact George 1201/652-1088 Ben Bender 1-201/6643892 ev 1m LET US BUILD YOUR NEXT R/C AIR CRAFT WE WILL BUILD ANY AIR CRAFT INLUDING GIANT SCALE IN THE BONES OR READY TO FLY PROMPT DELIVERY NO DEPOSIT REQUIRED BYRON KITS WELCOME BUILT TO FLY CALL FOR PRICE QUOTE FRANK V PONTERI MODEL AIRCRAFT CO 609 391-1855 Flared landings can executed nicely too airplane will have slowed down less final approach giant return modest investment cant better simple-to-build low-winger Big Bingo has incredible power profile tantalizingly broad per formance envelope thatll take cile pussycatting pull-out-the-stops aero batics Its easy model enjoy RC Electrics/Kopski Continued page 39 take place right battery terminals batter ies best condition ie batter ies relatively high internal resistance could case receiver packs have seen years service may have some abuse However also possible have receiver voltage variationbattery condition notwithstand ingif something receiver wiring resis tive likely suspects would connec tors possibly switch Thus receiver circuit resistance battery and/or wiring cur rent demand moving servo could cause enough voltage variation affect operation speed controls prone act way first place turn motor could react speed change giving clear impression radio static glitching problem isnt really Modern Eleetric system installation what else right after Vintage discussion topic Ini tiated October column planned short continuing series second install ment wasnt expected distant time first idea behind mini-series help get past store-bought packaged systems set about own Electric wiring confidence idea topic came talk given local club meeting lots lots interested folks very eager learn themselves custom instead just store-bought reasons Personally Ive never found ready-made system concept fully satisfied needs interests example like use wide variety products ten makes incompatible connectors deal have chosen use limited number connector styles planes equipped always fuse systems Some manufacturers dont improperly some do improperly insist nor digging planes undoing some system connectors charge always have charge connector right surface model ready accept charger connection addition rarely case packaged wiring harnesses fit right plane seems never enough wire length much too muchwith too bulky connectorsso squeezing can real challenge times mini-series will illustrate discuss cus tom installation wiring techniques work well course personal preferences can dictate particular details custom wir ing installation idea show examplesand easy yourself Electric installations consist three items motor battery everything else #8502 heat sink head reverse pipe Byron type installation #8501 pipe conventional installation Attention Fan Owners OPS now offers two needle bearing 80s use spare parts readily available 5jsPeoPIeof Comfeim 9m 9iec February 1991 151 THE AIRPLANE FACTORY INC 1880 PINEVIEW MANDEVILLE LA 70448 post paid LIST $89 95 1-800-264-7840 T-Shirt $1 295pp Kombat 40 member quick building extremely durable Armadillo series Made aluminum polypropelyne no foam can assembled engine mounted radio installed hour NoThing extra buyl provide 4 channel radio / 25-40 engine supply everything else great spots plane fully aerobatic bolt-on symmetrical wing pre-hinged pre-finished red blue orange yellow compared other almost ready fly designs take 10-12 hours longer complete Kombat 40 true winnerl ORDER YOURS TODAVI Trainer Version available $7495 BOB HOLMAN PLANS beat scale 29 years Plans Englands leading scale modelellers have plans have won everything BEST Show Toledo Woild Scale Meet Masters Plans Brian Taylor Dennis Bryant Thorpe BROS leading British magazinee Catalogs Best Scale $500 Model Aircraft plans Handbook 1990-91 S500 Scale Drawings Plans Handbook $500 RC-Model World Plans Conat Guide $500 Catalogs $400 Ca 3 shipped together order 503 FIOLMAN Kits Call 1714 885-39S9 New 138 pg GERMAN PLANS BOOKS $600 Other Catalogs Please Ad $200 Shipped Separate SCALE PLANS BY BRIAN TAYLOR 6th AT WORLD SCALE MEET PLANS Spliflee IA 6Y$3500 Moaecaito lIla 7t$3500 Kittifranrs4s tA kSS2800 P47 Tlemderbalt 51$2500 Teenpest 5 I5$2800 BT13 Vallaese73552800 14u1COPCSfr......4i1ST$2800 AT4 HarradEaST52a00 P-SIB ad 0 k1S2800 Iwt9O A-4- 6052a00 P510 MsaCaaa3.A9$3500 Si Hoc 7r52a00 rEjNll 5 64$2800 KawuaBleIr Geep..64 $2a00 Cm5a 120-S S2200 BE lOOP65$3000 Spilfie 14 S to69$3300 052U Kle5fiahen5552800 Gladlalce.W$3500 Mel63 Keasnet30$2200 Heencasne IirS3500 Meeqsale P556SV$4500 Sf 1091W$3500 SCIIPISNG $400SQUID everything else Connects first two togetherits stuff in-between specific make-up everything else depends largely personal preference degree nature model example Glider will often use OnOff motor control some kind Scale Aerobatic might incorporate speed control instead What ever its everything else vari ability choice really comes play Electric has motor battery Its mostly whats in-between thats custom territory photos shows complete power sys tem happens Senior Skyvolt Anyway shows motor battery everything else case latter cludes fuse arming switch speed control charge jack three connector types course some wire motor battery suitably outfitted appropriate connectors Lets first look motor easy get Out way personal choice outfit motors Sermos connectors course can make own choice motors come equipped Tamiya connectors popular reason alone Its observa tion however really serious Electric fliers use Sermos connector choice see time KRC meet Incidentally certain situations alternatives preferred example very small power systemssay 50 watts un der models relatively small lightmany folks use Deans connectors per haps two parallel pins per wire maintain small size weight Some attempt homemade connectors thats whole topic itself Whatever Ive pretty much standardized ap proximately three inches wire length motorsnot counting connector length Now lets move over battery pictured chosen purpose illustrate sev eral ideas battery happens consist three six-packs 1 2-Ah ampere-hour cells VEND MOUNTS..4..OI THE VIBRATIoN KILLERprotect EUNEJI Fail fuel proOf tfflfl ace isolation 25 120 enoinsu,.o.e Easytobuildtrdnsmdferbisoes Fit virtually tirCeahl enane/- tacuasa Single double version mounts TypiCal aibatlOfl reduotlon Both sets plans $400 70% Mae C% kit Cofleista send chock money order nounts BaSte toot points resound washers tu5nC instructions Send Sf200 osack eisner ordet* HUDS PLANS * err osa PfiODCCT5 P0 SOC aseas 555AC05d EL 35233 CII PO Boo 47203 377-42s2 FL resiltetrta add ICC BatesDoranille GA 30340 tao ttFORMSTtOC eand CASE Gasoline fueled Produces 3 foot flame will power planes up 228 mph Designed FUN EASY build home shop about 8 hours using materials already have such aerosol spray can combustion chamber Only Simple hand tools needed Both high performance jet engines FUN EASY build STEP BY STEP DETAILED FULL SIZE plan sets complete fuel ignition systems JOIN THE JET AGE sending $995 3hp plan set $1295 7hp plan set both sets $2000 JET ENGINE TECHNOLOGIES 10241 Ridgewood El Paso Texas 79925 ADVANCED AERO CuLL WhITE TOO I5FORtSdTOC PRODUCTS 70ALER isodedES lfndTEO YS 120 TIJFI5D EXHAUST SYSTEMS ros PATIERN AIItcrIAFT ADVAIPZEO 6060 60lJCTS 03 t 5 as-c $506 T3 75003 0141 P24-3940 Six- seven-cell packs very popular batter ies because used RC model cars very large marketplace indeed Typically ready-made packs outfitted Tamiya twopin connectors Obviously order make up 18-cell pack illustrated three such con nevtor pairs lots unnecessary wire would neededand would both bulky lousy pack pictured Ive chosen intercon nect three six-packs short individual wires wire pairs wire nuts very economical small light simple ap proach thing simpler to solderconnect individual six-packs making large 18-cell batteryand fact frequently sort thing Indeed prefer reason intercopnection indi vidual six-packs shown allow changes battery make-up different mo tors experiment example Ive flown Senior Skyvolt 12- 14- 18cell batteries wire nuts easily allow accomplished field See MAr March 90 May 90 discussion exem plify what custom can mean Finally battery output leads shown just like planestwo individual wires wire outfitted vonnector mates system fuse other wire has bare end also wire-nutted its mate system harness course single Sermos connector would work very well right also Im gonna try some timeeasily safely done since Sermos can supply colors con nectors besides black red well pick up next month meantime happy Electric winter flying everyone E RC Soaring/Blakeslee Continued page 41 mendously making possible two three times number launches same time period Cant get stronger testimonial can reach Jim Harger 1911 Wolcott Dr Co lumbia MO 65202 tel 1-314/443-6708 Composite Structures Technology Califor nia company have mentioned before CST run Matt Gewain well known Free Flight 152 Model Aviation Span 72 Plan $3500 $400 PostAccessory Set 10 Cowl Canapy Aluminum Spinner AvaIlable Plana TAYLOR PLANS Are Pictured THE BEST IN SCALE 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