Radio Control Electrics

RADIO CONTROL ELECTRICS THIS COLUMN LISTS two meets describes some new products updates Slow Charger continues recent discussions intended new Electric modelers Michael Stewart 107 Taft Terr Washington NJ 07882 Tel [908] 6896981 E-mail mike@mikes-universecom CD Twelfth Annual Lehigh Valley Radio Control Society LVRCS Electric Funfly scheduled June 12-13 club field Easton PA always great meet two-day affair early season always brings out lots new Winter projects meet features open flying plus some optional simple eventssomething everyoneon enviable field always look forward weekend encourage attendance Great Minnesota/Midwest Area Electric Fly MARCEE99 scheduled June 25 evening 26th 27th day 3MRIC Hyers field Cottage Grove MN can get details Irvin Cooper 5380 Otter Lake Rd White Bear Lake MN 55110 E-mail mmmpc535@isdnet Check out MARCEE home page wwwisdnetlmmmpc535 has lots say show about last years mect 96 Model Aviation r 79th model 30-year wet RC flier Dan Rossman Roswell GA decided something different Senior Kadet Electric conversion Astro 40G Donald Brooks book probably better entitled Everything Les Garbers manual design construction Speed About Props Electric Cant Find Anywhere Else 400-powered autogyro Magnificent beginners Some new publications shown two photos has much offer February 99 column photo Les Garber s excellent-flying 400-powered autogyro have videotape flight photo brought lots reader interest Now Les has put together outstanding 35-page booklet done can duplicate beginning modeler publication very well done $15 plus $5 S&H Les 2324 East 5th St Duluth MN 55812 Tel 218 7286827 E-mail lgarber@dumnedu Les member MARCEE group discussed earlier column Go meet see autogyro fly Donald Brooks has working small propellers several years has published several related articles has released Small Prop book perhaps best described subtitle Understanding Optimizing Propeller Performance Model Electric Aircraft loaded higher usual tech prop stuff written low-key conversational format thats easy understand includes enormous amount proprelated information including variety graphics analysis results 230 props convenient slide-rule-type Field Thrust Calculator Most work based experimental measurements aeromodeling library isnt complete publication can get Prop Talk $1795 plus $250 S&H ARPI 900 Bower Dr Idaho Falls ID 83404 Stuart Pearce head modeler Spirit Yesteryear Model Aircraft Company 40 Holgate St Barrie ON L4N 2T7 CANADA recently wrote told product expansion Stuart took up manufacture several popular Leisure kits several years ago include Playboy Amptique Wasp American Eaglet Lanzo Bomber Since has added former Astro kit line company expanding again Examples include Red Zephyr Feather Merchant Foote Westerner small size Dallaire Sportster Boomer Bus /4-scale Mew Gull Contact Stuart details can buy products him suppliers such New Creations RIC have built flown least four early Leisure products encourage consider Large Pack Slow Charger construction article July 97 MA has reader favorite However did know Radio Shack has discontinued plug-in power module CAT # 2731610 design based find new product CAT # 273-1631 will suitable substitute basic difference between original newer modules latter has switch-selectable output voltage fit different applications Just choose 13volt setting Slow Charger should function intended May June columns presented discussion experienced RC modelers considering just beginning E power RC discussed some aspects early Electric about 25 years ago difficult times early Electric modelers days very few not-sogood E-products near-total absence Electric experience knowledge often failure discouragement tried Electrics Increased modeler interest combined better E-products slowly eroded July1999 97 mid-1998 Dan Rossman advanced E-ambitions scratch C-130 Four Magnetic Mayhems 35 1700s Dan flew full-scale 130s Willow Grove NAS r Worlds Best 1/2-A RIC Laser r J-3 Cub Introducing Series III 30 Wingspan Laser Cut Rubber Powered Flying MQdels Kit #307 Over 110 LASER CUT PARTS 45 Kit #308 Over 90 LASER CUT PARTS Kit #309 Over 110 LASER CUT PARTS expanding line airplanes addition Series III 30 wingspan laser cut kits Like walnut series line geared toward exciting subject matter captures best model aviation has offer Besides offering cleanest laser cuts comprehensive plans free flight kit provide following quality features eHand Selected Balsa sColor Peel & Stick Decal Set 9 Plastic Propeller eFull Size Plan FAI Tan II Rubber Step Step Instructions Vacuum Molded Parts eLight Weight Colored Tissue Call today 1-800458-2828 Ext 800 ask information packet Dumas line Rubber Powered Flying Models dumas aircraft DUMAS PRODUCTS INC 9O9AMA E 17th St Tucson AZ 85719 Phone 520623-3742 Fax 520-620-1329 wwwdumasproductscom early image allowed Electric emerge viable power source became clear Electric can work very well has distinct appeal offers certain advantages Electric growth became self-feeding columns discussed simplistic makeup E-power system Electric language might heard flightline what meant good Electric flight ways E-power different wet power some discussion power wet conversions promise come topic Also mentioned thought E power like rubber gas everyones interest liking like other power options just fun choice also cautioned important understand expectations E-power choose appropriate project Perhaps important part last two columns encouragement gather possible model magazines past few years magazines represent vast resource Electric information does writing offer much info about aspects Electric also shows typical successful E-models kinds built others Its really quite easy identify some pictured airplane relate compares own E-wish Another valuable source information inspiration E-meet like two announced above maintain cannot leave good E-meet unimpressed uninspired can almost guarantee such attendance will demonstrate what held years flies can flown Electric Witness autogyro discussed earlier needs know go about what use Isnt same scenario early days wet-powered RC Lets look some Electric Rules Thumb can apply model Back 80s introduced some early Rules Thumb Model Aviations About Electrics series have pretty much held up some have adjusted little some have added Given durability guidelines feel can accept safely typical RC nodel electric system makes up about half ofthe models total weight Reasonable tolerance 40/60 spread either way power system motor gears battery speed control wiring etc will 40-60% weight finished airplane Everything elsethe airframe radio etc will make up balance aircrafts flying weight good way stan out planning project think 50% deviate intentions planning refine Things influence final weight distribution include what flight intention airplane built example might interested speed Pylon flight time might relatively short fast selected battery might small side lower capacity save battery weightconsistent short flight might interested long leisurely flying around case such converted Old-Timer design like REVOLT might opt highercapacity read heavier battery packmore fuel percentagewise Underneath model weight itself Overbuilt structuresas feel wet designs arecost Electric flier ounce airplane structure means another ounce power system content maintain 50/50 guideline strongly encourage building light Note light does mean fragile Build light strong build smart Its little like using 2 x 4 stud material make picture frame /2 X moulding will nicely youre scratch-building Electrics doing wet conversion pay attention structure needed Electric fliers have made very successful conversions modifying kit content Most plywood needed some more-dense balsa may warranted perhaps some planking doubling block dictated either Examples smart construction contained magazines mentioned earlier See others have approached particular building task Think light timeit will grow become way life Another Rule Thumb typical motor battery about /3 finished models total weight reasonable range 25-40% comes largely considerations already discussed decided put own airplanes test shown accompanying table Aircraft Sig Wonder REVOLT Sr Skyvolt Emotion Emotion II Comment Wet cony E-design E-design E-design E-design Tot Wt 551 675 726 435 528 Baft Wt 216 216 259 129 216 39 32 36 30 41 average battery pack weight percentage group 356% little higher guideline airplanes array intended longer sport flight fuel tank heavier side constructed table pulling airplanes Im currently flying weighing selectivity would have major project pull power systems completely verify 50% guideline airplane/power system makeup have no reason feel actual test results would fit description given previously Well continue discussion new wannabe E-aeromodelers next month Please include SASE correspondence youd like reply try attend some E-meets take some wet-flying friends alongyou will impressed odel Aviation