Radio Control: Electrics

THIS MONTHS TOPICS 1 Electric Connection Service SEFLI 2 Electric meets CA TX LA PA 3 Electric event poll 4 Reader re action motor specifications Electric basics Sen lorita cut hand 5 little Vintage RC 6 Electric system installation discussion THE ECS begins month thus Three cheers big thank-you words written reader Jay Putt reacting results ECS listing May 90 col umn Jays letter goes say result column new Electric club has formed called Silent Electric Fliers Long land SEFLI Club president Greg Poulos assisted VP Don Mott new organiza tions treasurer non other Larry Sribnick Mr SR Batteries himself Jay club secretary SEFLI initially flying borrowed field ex pects get use some public land very soonthis task being greatly helped quiet Electric fact national organiza tionthe AMAhas insurance program So impressed local government types some local wet-power folks now concerned noise may deemed unnecessary since Electric can just about anything quietly like public large does like noise best wishes SEFLI new officers members can connect group contacting Jay Putt 123 Sheep Pasture Rd Setauket NY 11733 tel 1-516/689-6420 tell im Bob sent ya Inside Caravan stuff charge might get Impression Im serious about Electric can bet Lots modelers have Caravans photo might give Idea get electric stuff out way still within easy reach Wood panel rests floor hangs window ledge lifts out easily Heavy twin cable visible floor #4 welding wire battery jumper ca bles okay runs vans battery New ECS listings month include Bob Keathlcy Rt 14 Box 17-A Gray TN 37615 Dave Harpe 1511 150th Ave #10 San Lean dro CA 94578 Dave Snider 76 Meadowbrook Ave Youngstown OH 44512 folks would like connect others respective areas share enjoyment Electric brings Remember service also available youindividuals clubsbut have write tell Above newly completed Vintage Trixter Beam same airplane design first flew RC 1954 Thrustmaster motor six 800s Jomar SC5 8 x 4 nylon prop provide go version MonoKote provides cover All-up weight 1s41 oz Rudder-only flight control uses original Bonner SN escapement Below Inside spacious cabin Trix ter Theres plenty room locate electric radio stuff Everything see except escapement held place double-sticky Velcro Radio Shack Items Electric meets October rather numerous midcabin include Silver Seven receiver 250-mAh pack original-design escapement de- Boucher wrote tell 16th Ascoder Forward six-cell SOO-mAh pack 5C5 speed control Note arming switch tro Champs held mid-May mounted fuselage side Right Bonner SN escapement circa 1954 rubber went say year will Aspowered device yes model needs rubber winder moves rudder years past tro Winter Nats October 6-7 Sepulveda Ba advanced RC two such devices second either engine highllow elevator 54 Model Aviation Radio Conoi Electrics Bob Kopski 25 West End Dr Lansdale PA 19446 Microcomputer-based peak detector de signed use constant-current realsitive-type chargers former cludes Astor 112 115 big batteries can now peak-charged Originally pub lished RCM unIt now available built burned tested TIm Ahrens Aero ElectronIcs Rt 6 Box 54J Austin TX 78737 tel 1-512/228-4474 Im going add vans power panelsomewhere Prototype Astro speed control has Seniorita quite some time Model 205 has five N-channel MOSFETs motor con trol four P-channel MOSFETs used braking Unit supplied Tamlya con nectorsstandard Astro product line As shown device outfItted Deans connector mate Silver Seven receIver Price availability werent finalized time wrItten sin CA meet will Pattern Scale Py ion Helicopter Free Style demos can get info contacting Bob 13311 Beach Ave Marina Del Rey CA 90292 address looks familiar should course address Astro very same dates except about half way across country fourth annual Dal las Electric Aircraft Fliers DEAF Fun Fly Sat urday will offer Longest Flight Most Aerobatic Best Scale Most Impressive events Sun day something special Sunday will offer some thing new Four-Hour Team Enduro Rules somewhat involved detail sure sounds like fun two days will different fields near Dallas can get info Frank Korman 5834 Goodwin Dallas TX 75206 tel 1-214/821-0393 Sunday October 7 also date Elec tric Fly-In sponsored WESS Westmore land PA Electric Soaring Society Activities will include All-Up/Last-Down Pilots Choice Most Aerobatic Best Scale Best Old-Timer Best Sailplane Largest Smallest Best Original Farthest Traveled CD other Bob Markle RIM site will Blairsville PA about 40 minutes Monroeville exit Pennsylvania Turnpike Bob tells WESS hopes meet can evolve sort western Pennsylvania version KRC Elec tric Fly Now position honorary member WESS Im telling get out help come true info contact Bob Markie Unit #3 Sandy Hill Rd #6 Irwin PA 15642 tel 1-412/863-0103 little later Octoberthe 20th 21st exactis Gulf States Electric Fly-In spon sored Tammany Aero Club Events inContinued page 163 Kraft Midwest Inc 115 E Main Northville Ml 48167 313 348-0085 FAX 313 348-41 Th Ultra Narrow Band AM Receiver Model KMRDC4-7A Years developing worth wait Special Agreement RCD Rxs 50 & 53 Mhz Complete 6m conversion Available Specifications Size 275 70mm x 165 415mm x 825 205mm Weight 165 oz Working Voltage 38 60 VDC Temperature -10 120F 10 Khz spacing Bandwidth 1- 85 khz 60db down 301P 3db Image 60db down B&P Associates Gives Total Flight Line FREEDOM battery needs call write B&P Associates PO Box 22054 Waco TX 76702-2054 817662-5587 new electric starter battery pack cuts cord has always tied starter power panel Discover freedom being able start plane wherever added safety less wire get caught prop charge hefty 4 Amp/hour pack will take through weekend flying power enough spare dont stop have Ni-Cads virtually size imaginable cut experimenter free design whatever takes make yours best setup field October 1990 55 Features Dual conversion AGC Crystal Ceramic Filters 50 53 72 75 Mhz ectors Kraft styles Deans World & specials List Prices Special War p Speed Service Exceeds AM Rx Guidelines 4 Channel$9495 5 Channel$9995 6 Channel$10495 7 Channel$10995 Pro-Line Units Negative Pulse add $1000 Dealers Discounts available Rx Trade $5-Sb LEADER IN SMALL AIRFOIL TECHNOLOGY MAStER AIRSCREW Folding Propellers Greater Thrust Improved Glide Longer Endurance Gain efficiency large propeller disk Master Airserew folding propellers Featuring undercambered blades new 2 lightweight alumi num hub 1/4 mounting hole built-in spinner 12 x8 use 25 1 geared motors 15x12 31 through 45 1 geared motors Made tough glass-filled nylon Replacement blades available Competitively priced $895 12x8 $995 15x12 WINDSOR PROPELLER CO 3219 Monier Circle Rancho Cordova CA 95742 should still attached upper surface trailing edge under conditions detri mental effect thickened trailing edge drag has documented Interestingly enough though Gurney Flap Gurney Lip Gurney Angle Iron etc trailing edge both model airfoils race car airfoils significantly increases lift negative lift down-force case inverted race car wing minor increase drag Gurney Flap vertical surface approxi mately 1-2% chord height trailing edge underside airfoil Gurney Flap likely descendant spoiler found trailing edge upper sur face nonwinged race cars spoiler caused increased local pressure region ahead due formation large separation bubble pressure bubble area increased thereby reducing lift remember race cars want positive lift separated airflow reattaches upper edge spoiler gives additional ad vantage being stable over wide speed range very concerned about strength stability razor-sharp trailing edges Gurney Flap provides another interesting alterna tive Ken noted three good references subject Road Vehicle Aerodynamics AJ Scibor-Rylski Race Car Engineering Mechanics Paul Van Valkenburgh Soartech #8 Selig Donovan Fraser am sure end continuing discussion subject trail ing edges continually try ing find advantage against competition keep up research experimentation RC Electrics/Kopski Continued page 55 dude AMA 627 610 623 plus Longest Flight day All-Up/Last-Down Most Aerobatic Most Impressive Farthest Trav eled Get details Boyd OBrien PO Box 7153 Metairie LA 70010 tel 1-504/8355212 Ben Mathews 101 Mulberry Dr tairie LA 70005 tel 1-504/833-5589 [home] 1-504/366-4511 [office] Electric events often take form fun activities such just men tioned above Some meets include formal AMA Electric events although lesser degree latter events fully described AMA Competition Regulations booklet have place about two years columnist would like know what preferences respect Electric events Are fun event person formal competitor about letting know what like Ill sum marize results future column Reader reaction note month includes some misunderstanding ongoing crusade establishment meaningful useful intel ligent standardized Electric motor specifications/ descriptions want make very clear am push ing purpose determining de fining Electric classes would found competitive events Rather Im encouraging some sanity some maturity way motors described everyone can know what given product capable doingwith little fa miliarization course compares very fa vorably system now usewhich no system Continued page 167 Complete single cylinder system nclud ng throttlecoupled spark advance kit spark spark plug lead25 plug battery pack charger 900 shielded Much kmger up Eta Easy bud sterts-no kickback 1D00-12INIO RPM relile uk 30% mere power en few strokers me uutbm aveldule Lowerpiicedfuebnedtroneeded Shielded spak phg lead uul SF pug cover Ferniatyenpiesfl&up2b4streke siiglsaidtwhicylhders ailvmhactsaVddlh Sperk cais qiuk pligs shielded eke leed & th~m kits avls 1300 RIC BUMPFUN0 FLYRUBBER POWER KITS SUPPLIES NEWPEANUT SCALE RUBBER SPORT 12&13 FT LONG OUTSTANDING CONTAO MORE POWER KIT $35000 ANDREASON PIPER CUB FLYING ACE MOTH p998 MUSTANGZEROBOSTONIAN PUP *895 PRAIRIE BIRD 16*895 NEW GENES/SPIETENPOLLACYROG IS MODEL 8295 RIC FLYING WING GLIDER GIPSY MOTH COUGER 59 INCH WINGSPAN HAND LAUNChNOSE BEARINGS BRASS WASHERS PROPS 4TO 9 CUFF SOAR TARTRUBBER TAN DUMMY CYL CLEAR VINTAGE WHEELS 300 PLANS TISSUEMANY MORE KITS C02 ENGINES KIT $34 NGERFORD SILK S STEEL SPOKED WHEELS 2 3 CHCOMPLETE CATALOG $200 BOX 710399-MASANTEE CA 92072 TEL 619 448-1818FAX 619 448-1833 f-UuyhuI5ff SCALE WHEELS RADIO CONTROL ROL-UNE -FLIGHT VINTAGE 2 3 5, 6% sizes 3/4 1 11/4 1 4 4LLOAU U SOS GOLDEN AGE sizes2 31/i 13% 11443/i 1145 1/a61/ NEW BALLOON 21/41/ 314514 3% SCALE PILOTS- CYUNDERS- ENGINE KITS MACHINE GUN KITS PLASTIC DISPLAY MODELS Send $3 fully illustrated catalog other kIts accessories DEPT MA PAWNEE ST SAN MARCOS CA 9 October 1990 163 Chosen Rien 0riids ThG Mfg aid kM Aircraft Squply fer its outitmubg ralility SMOOTH CONTOUR 2% 1314 114 3% 11444 2514 PIt SON 1492FORREST CITY ARKANSAS 72hh5 RC Electrics/Kopski Continued page 163 Whether motor used sport competi tion paperweight doesnt matter motor motor motor whatever its used case can described few meaning ful words printed right label Anyway personally dont think should ever motor size /competitive-event rela tionship plenty other ways estab lish competition categories use thing things other motor specs will preempt specsmanship game would evitably engulf us Remember hobby happy should apply lessons elsewhere modeldom history avoid such unhappies motor classes would surely bring So continue encourage adoption meaningful motor descriptions remember its simply purpose describing motors anything else information newcomers Bob s col umn hes talking about belief present nomenclature used electric motors OS 40 etc sufficiently descriptive performance capabilities motors thought motor-labeling system [to de scribed moment] would informative prospective purchaser particular motor Bobs labeling system would involve powerhandling capacity motor watts ex pected capacity handle electric current terms amperes recotnmended input volt age output rpm specifi ed power levels can read complete dissertation April 1987 columa beginning page 47 RMcM Onward Some readers have reacted very posi tively comment July column wherein indicated future columns would once again clude some Electric basics no question Electric growingthis course vir tue Electric beginners joining demonstrates implicit ongoing need basic information Lots readers have reacted photo same issue new electrified Seniorita have written did ues tions Well can tell fully descriptive article covering model similar ones will appear future MAI just dont know Anyway will plenty text photos telling think too can have sort model Incidentally writing July 1 134 flights logged Seniorita other persons have flown part total fellow flew immediately asked bor row plans very friendly very flyable model would encourage interested docile low-key fun flier consider model choice same July issue very personal JERRYS PUMP MOUNT Provides frrm ncnslrp platform attach fuel pump round square jugs spring ten sionsed sand easy transfer jug jug model fit cans also Model J Jug 5495 Model C Gal Can 54 ss Model u Cliv Gal Can $495 Shipping $200 per orde PHONE 5011 6333101 touch John Prestons Safety Comes First column very own prop-chopped right hand readers wrote indicate con cern hope its now OK Well indeed Scarred perfectly OK Luckily Im really very lucky two ways first way respect relative superficiality injury second having caring con cerned reader/friends Thank dem onstrated interest concern Vintage RC mentioned last month along intent build again very first RCa Trixter Beam Some photos follow up new plane built same plans used 1954 represents blend old new Motivation 1954 K&B Green Head 15 no engine control Now its Electric speed control safety con trol system combination modern radio equipment vintage representation two made work together some specially de veloped circuitry vintage part very same Bonner SN escapement used original Beam rubber-powered device upon receipt signal permits partial rotation torque rod latter moves rudder fully direc tion Release signal permits surface re turn neutral next signal command repeats first action except case rud der now moves full opposite direction next signal repeats first rudder direction on other words Left Right sequential pilot has remember what did last Reread preceding think about Yes thats what really said special circuit mentioned allows chan nel five output Ace R/C Silver Seven re ceiver drive escapement installed push button switch transmitters channel five put changes normally transmitted 1millisecond pulse 2-millisecond pulsenot unlike retract switch except hold ton signal effect airborne decoder circuit similar electronic On/Off switch motor often used Electric Sailplanes fact first used just such product Beam too glitchy often allowed escapement cycle mess up mental count command given last made new Beam real thrill everyone flight line fly new circuit fixes has never skipped Anyway except motor control new Beam flies just like old days RC rudder full Left neutral full Right plane sort Free Flight course inter rupted sudden flight path changes Im hav ing great Electric time Modern Electric system installationand particular system wiringwas subject talk recent club meeting well re HAND MADE IN THE USA Pit spec lal Holds props 18 Accepts cans ju s Enclosed Storage Smallest Size Youll LOVE IT! Two drawers plus big p storage compartment Panel & Battery corn partment P rop cornpartment Opens TOP FRO Lightweight sturdy attractive KITS IASSEMBLED ITM FUEL OOF FINISM INSIDE & OUTS ASSMFINISHED .... $7995 Oliws available SASE fry info Superbly Engineered Hand Crafted Flight Support Unts Assembled units include gal METAL CAN Attractive Durable Oak 1/4 Ply Construction Measures 19 xlOs 135 Holds youd thinkl Protektor ISmIIIBr Topqualtyconstruction sttractive& durableoakplywiththick black textured foam protect ~jr valuable nent ot dual ransmitter unts rhe very bestl Dual Unite PERFECT emitter & chargera BhtL Padw Tad & onlal Complete Kit completely assembled & finIshed SINGLE KIT .$2995 SGL FinfAssn..... $3995 DUAL KIT.... $3495 DUAL Fin/ Assrn 4695 SASE FREE BROCHURE SEE YOUR LOCAL DEALER OR CALL US 11i Continental U S Sat 8-5 MST ORmoney od NEAT STUFF 45 16th Street West Billings MT 59102 III pani ul ngIne YOt 2cyc veiny Area 1100 sqin 1218 4cyc Machine Cut Wood Kit including wire landing gear & wing joining hdwe VtSA & MC accepted $120 Add 500 post & handling Add 300 COD Ohio residents add 60% tax free Catalog send SASE Air Flair1-513-878-7487 PO Box 2075 Fairborn Ohio 45324 October 1990 167 J & L ENTERPRISES C c $ $ $ $ $ $ % Home Video Buffs 4 video used will receive $50 tape content used becomes property RC Funnies formats accepted Send orginal tape no copies will return tape enclose $5 postage handling Set tape proper segment brief written explanation Send video anything funny new interesting nes4 3493 Scottwood Dr. Green Bay WI 54311 ceived got idea some similar discus sion would again appropriate basics topic topical area has covered piece meal fashion throughout past years col umn However its time review/update some old some new ideas examples necessity will require col umn month well look some generalities begin detailed discussion next De cember column intent help transition store-bought custom wiring/installa tionseven now feel such beyond ability normally think Electric stuff model comprised three things motor battery everything else simplest view everything else basically what connects first two together makes everything work However everything else can include quite variety components wiring options example control choices include speed controls electronic On/Off switches servo-driven switches no control recommended choices further expanded existence products several competing manufacturers theres problem connector variety its frequent occurrence competing products dont readily interconnect questions Does fuse go before speed control after should arming switch goor need now Which wire cut Red black much goes well questions will answered Before detail beginssome preaching Electric installations fused will fly fuse Period strongly recommend system does include fuse get Well see Personally Id like see AMA require properly installed system fuse part con ditions insurance no excuse having fuse distinct safety consideration please dont anyone tell works better Power loss associated prop erly installed fuse peanuts dont care youre competition next chapter verse concerns arming switches view another sys tem safety item also downright practical re quirement well arming switch mas ter control Electric power system Its unlike main circuit breaker wiring sys tem home switch never driven servo servos have known glitch stall always mounted surface model ready ac cessibility makes everything workor can shut everything down easily overrides thing else power system including con trol radio may have over system operation Its last thing turn before takeoff first thing turn off right after landing dont have plane should Well see another column concludes Remem ber next November issue annual cov erage AMA Nats wont regular columns except Prestons Safety col umn until December issue Please send mail author address shown header respond correspon dence accompamed self-addressed stamped envelope SASE meantime always Happy Electric Landings Everyone RC Scale/Troy Continued page 57 event can own pace too Naturally must first read rules event AMA 1990-91 Competition Regulations hand book order understand what will ex pected contest after spending few minutes rules youll see detailed documentation package youve fearing long isnt required Fun Scale like can replaced some thing simple picture model box top kit youve built top Scale meets have begun offer Fun Scale added attraction Attend Once youve made commitment enter few such contests can usually count being able rub elbows best bestthe big-name Scale flierswithout intimidation having battle Instead can simply enjoy meeting watching work learning Display best manners contest scene dont overly shy Just like Scale modelers love talk about airplanes first few Scale meets will best opportunlty make friends mentors experienced fliers Approach youll soon find no different or other RC modelers anywhere else Ask let see documentation packages talk about static presentations Ask handled neat little trick models Watch way present flights judges way instruct callers assist flight presentations Pay particular attention highly professional admirable manner true sportsmen handle themselves judge forced take nibble Out egos downgrade watch learn sooner will come grips contest trail Before too long models will show marked improve ment construction flying style will de velop purpose will come know documentation package can important airplane will have learned effective ways preparing will matter time before move take rightful place Sports man Expert Scale Giant Scale classes competition perhaps yourself become mentor another aspiring flier As added benefit youre working toward perfecting models flying skills youll also de veloping two other valuable assetsgood sports manship character After getting involved AMA Fun Scale using opportunity gradually become Scale contest environment perhaps will understand having fun isnt limited fun flys noncompetitive events Scale com petition fliers have fun too Most com petitors very warm people enjoying what trying best can After really fun AT-6/PauI Continued page 60 good sanding Glue tips final carve sand flaps can fit ted joined hinged multiple hinges shown plan serve good purpose 168 Model Aviation n neSc premIeres Oct RC EntertaInment t 1t8 beet Sit bad & relax Smile Laugh Enjoy funny side modeling series 30-45 mm videos will tickle funny bonel collection fun-filled funny moments mound country Great club meetings home entertainment new & exciting tape other month $25 per tape VHS SPECIAL INTRODUCTORY OFFER $$$ SAVE OVER $801 YEAR Suscupno 6 TAPSs -$tiO $9995 $$$SAVE$1102 Yu Suuscuprso 12 TAss -$3G $190 year round enteIainment Credit card orders may placed cafling 1-800-236-9696 Visa & MasterCard amid name address phone please print type subscription amount RC FUNNIES 3493 Scottwood Dr Green Bay WI 54311 GLIDER RETRACTS Servo actuated glider retracts Over center up/do lock Aluminum parts made computer-controlled milling machine 8061 -TE beautifully crafted retracts made finest materials available best offered anywhere Made uSA 1/5 SCALE 3 oz wheel 1 -9/16W x 4L 2H 2/v wheel max 1/4 SCALE TWO TO CHOOSE FROM STO FOR GLIDERS UP TO 10 LBS 52 oz wheel 2W s 3-7/1 6L 2A H 35 wheel max HO FOR GLIDERS OVER 10 LBS 65 OZ 2W 6L 23/vH 35 wheel max ia SCALE 88 OZ wheel 23/4W 61 23/aH 5 wheel max FIVE-FOOT PUSHAOOS-1 /16 Music Wire casing Send stamped self-addressed envelope pricing mare info SCALE GLIDER COMPONENTS 7034 FERN PLACE CARLSBAD CA 92009 6191 931-1438

THIS MONTHS TOPICS 1 Electric Connection Service SEFLI 2 Electric meets CA TX LA PA 3 Electric event poll 4 Reader re action motor specifications Electric basics Sen lorita cut hand 5 little Vintage RC 6 Electric system installation discussion THE ECS begins month thus Three cheers big thank-you words written reader Jay Putt reacting results ECS listing May 90 col umn Jays letter goes say result column new Electric club has formed called Silent Electric Fliers Long land SEFLI Club president Greg Poulos assisted VP Don Mott new organiza tions treasurer non other Larry Sribnick Mr SR Batteries himself Jay club secretary SEFLI initially flying borrowed field ex pects get use some public land very soonthis task being greatly helped quiet Electric fact national organiza tionthe AMAhas insurance program So impressed local government types some local wet-power folks now concerned noise may deemed unnecessary since Electric can just about anything quietly like public large does like noise best wishes SEFLI new officers members can connect group contacting Jay Putt 123 Sheep Pasture Rd Setauket NY 11733 tel 1-516/689-6420 tell im Bob sent ya Inside Caravan stuff charge might get Impression Im serious about Electric can bet Lots modelers have Caravans photo might give Idea get electric stuff out way still within easy reach Wood panel rests floor hangs window ledge lifts out easily Heavy twin cable visible floor #4 welding wire battery jumper ca bles okay runs vans battery New ECS listings month include Bob Keathlcy Rt 14 Box 17-A Gray TN 37615 Dave Harpe 1511 150th Ave #10 San Lean dro CA 94578 Dave Snider 76 Meadowbrook Ave Youngstown OH 44512 folks would like connect others respective areas share enjoyment Electric brings Remember service also available youindividuals clubsbut have write tell Above newly completed Vintage Trixter Beam same airplane design first flew RC 1954 Thrustmaster motor six 800s Jomar SC5 8 x 4 nylon prop provide go version MonoKote provides cover All-up weight 1s41 oz Rudder-only flight control uses original Bonner SN escapement Below Inside spacious cabin Trix ter Theres plenty room locate electric radio stuff Everything see except escapement held place double-sticky Velcro Radio Shack Items Electric meets October rather numerous midcabin include Silver Seven receiver 250-mAh pack original-design escapement de- Boucher wrote tell 16th Ascoder Forward six-cell SOO-mAh pack 5C5 speed control Note arming switch tro Champs held mid-May mounted fuselage side Right Bonner SN escapement circa 1954 rubber went say year will Aspowered device yes model needs rubber winder moves rudder years past tro Winter Nats October 6-7 Sepulveda Ba advanced RC two such devices second either engine highllow elevator 54 Model Aviation Radio Conoi Electrics Bob Kopski 25 West End Dr Lansdale PA 19446 Microcomputer-based peak detector de signed use constant-current realsitive-type chargers former cludes Astor 112 115 big batteries can now peak-charged Originally pub lished RCM unIt now available built burned tested TIm Ahrens Aero ElectronIcs Rt 6 Box 54J Austin TX 78737 tel 1-512/228-4474 Im going add vans power panelsomewhere Prototype Astro speed control has Seniorita quite some time Model 205 has five N-channel MOSFETs motor con trol four P-channel MOSFETs used braking Unit supplied Tamlya con nectorsstandard Astro product line As shown device outfItted Deans connector mate Silver Seven receIver Price availability werent finalized time wrItten sin CA meet will Pattern Scale Py ion Helicopter Free Style demos can get info contacting Bob 13311 Beach Ave Marina Del Rey CA 90292 address looks familiar should course address Astro very same dates except about half way across country fourth annual Dal las Electric Aircraft Fliers DEAF Fun Fly Sat urday will offer Longest Flight Most Aerobatic Best Scale Most Impressive events Sun day something special Sunday will offer some thing new Four-Hour Team Enduro Rules somewhat involved detail sure sounds like fun two days will different fields near Dallas can get info Frank Korman 5834 Goodwin Dallas TX 75206 tel 1-214/821-0393 Sunday October 7 also date Elec tric Fly-In sponsored WESS Westmore land PA Electric Soaring Society Activities will include All-Up/Last-Down Pilots Choice Most Aerobatic Best Scale Best Old-Timer Best Sailplane Largest Smallest Best Original Farthest Traveled CD other Bob Markle RIM site will Blairsville PA about 40 minutes Monroeville exit Pennsylvania Turnpike Bob tells WESS hopes meet can evolve sort western Pennsylvania version KRC Elec tric Fly Now position honorary member WESS Im telling get out help come true info contact Bob Markie Unit #3 Sandy Hill Rd #6 Irwin PA 15642 tel 1-412/863-0103 little later Octoberthe 20th 21st exactis Gulf States Electric Fly-In spon sored Tammany Aero Club Events inContinued page 163 Kraft Midwest Inc 115 E Main Northville Ml 48167 313 348-0085 FAX 313 348-41 Th Ultra Narrow Band AM Receiver Model KMRDC4-7A Years developing worth wait Special Agreement RCD Rxs 50 & 53 Mhz Complete 6m conversion Available Specifications Size 275 70mm x 165 415mm x 825 205mm Weight 165 oz Working Voltage 38 60 VDC Temperature -10 120F 10 Khz spacing Bandwidth 1- 85 khz 60db down 301P 3db Image 60db down B&P Associates Gives Total Flight Line FREEDOM battery needs call write B&P Associates PO Box 22054 Waco TX 76702-2054 817662-5587 new electric starter battery pack cuts cord has always tied starter power panel Discover freedom being able start plane wherever added safety less wire get caught prop charge hefty 4 Amp/hour pack will take through weekend flying power enough spare dont stop have Ni-Cads virtually size imaginable cut experimenter free design whatever takes make yours best setup field October 1990 55 Features Dual conversion AGC Crystal Ceramic Filters 50 53 72 75 Mhz ectors Kraft styles Deans World & specials List Prices Special War p Speed Service Exceeds AM Rx Guidelines 4 Channel$9495 5 Channel$9995 6 Channel$10495 7 Channel$10995 Pro-Line Units Negative Pulse add $1000 Dealers Discounts available Rx Trade $5-Sb LEADER IN SMALL AIRFOIL TECHNOLOGY MAStER AIRSCREW Folding Propellers Greater Thrust Improved Glide Longer Endurance Gain efficiency large propeller disk Master Airserew folding propellers Featuring undercambered blades new 2 lightweight alumi num hub 1/4 mounting hole built-in spinner 12 x8 use 25 1 geared motors 15x12 31 through 45 1 geared motors Made tough glass-filled nylon Replacement blades available Competitively priced $895 12x8 $995 15x12 WINDSOR PROPELLER CO 3219 Monier Circle Rancho Cordova CA 95742 should still attached upper surface trailing edge under conditions detri mental effect thickened trailing edge drag has documented Interestingly enough though Gurney Flap Gurney Lip Gurney Angle Iron etc trailing edge both model airfoils race car airfoils significantly increases lift negative lift down-force case inverted race car wing minor increase drag Gurney Flap vertical surface approxi mately 1-2% chord height trailing edge underside airfoil Gurney Flap likely descendant spoiler found trailing edge upper sur face nonwinged race cars spoiler caused increased local pressure region ahead due formation large separation bubble pressure bubble area increased thereby reducing lift remember race cars want positive lift separated airflow reattaches upper edge spoiler gives additional ad vantage being stable over wide speed range very concerned about strength stability razor-sharp trailing edges Gurney Flap provides another interesting alterna tive Ken noted three good references subject Road Vehicle Aerodynamics AJ Scibor-Rylski Race Car Engineering Mechanics Paul Van Valkenburgh Soartech #8 Selig Donovan Fraser am sure end continuing discussion subject trail ing edges continually try ing find advantage against competition keep up research experimentation RC Electrics/Kopski Continued page 55 dude AMA 627 610 623 plus Longest Flight day All-Up/Last-Down Most Aerobatic Most Impressive Farthest Trav eled Get details Boyd OBrien PO Box 7153 Metairie LA 70010 tel 1-504/8355212 Ben Mathews 101 Mulberry Dr tairie LA 70005 tel 1-504/833-5589 [home] 1-504/366-4511 [office] Electric events often take form fun activities such just men tioned above Some meets include formal AMA Electric events although lesser degree latter events fully described AMA Competition Regulations booklet have place about two years columnist would like know what preferences respect Electric events Are fun event person formal competitor about letting know what like Ill sum marize results future column Reader reaction note month includes some misunderstanding ongoing crusade establishment meaningful useful intel ligent standardized Electric motor specifications/ descriptions want make very clear am push ing purpose determining de fining Electric classes would found competitive events Rather Im encouraging some sanity some maturity way motors described everyone can know what given product capable doingwith little fa miliarization course compares very fa vorably system now usewhich no system Continued page 167 Complete single cylinder system nclud ng throttlecoupled spark advance kit spark spark plug lead25 plug battery pack charger 900 shielded Much kmger up Eta Easy bud sterts-no kickback 1D00-12INIO RPM relile uk 30% mere power en few strokers me uutbm aveldule Lowerpiicedfuebnedtroneeded Shielded spak phg lead uul SF pug cover Ferniatyenpiesfl&up2b4streke siiglsaidtwhicylhders ailvmhactsaVddlh Sperk cais qiuk pligs shielded eke leed & th~m kits avls 1300 RIC BUMPFUN0 FLYRUBBER POWER KITS SUPPLIES NEWPEANUT SCALE RUBBER SPORT 12&13 FT LONG OUTSTANDING CONTAO MORE POWER KIT $35000 ANDREASON PIPER CUB FLYING ACE MOTH p998 MUSTANGZEROBOSTONIAN PUP *895 PRAIRIE BIRD 16*895 NEW GENES/SPIETENPOLLACYROG IS MODEL 8295 RIC FLYING WING GLIDER GIPSY MOTH COUGER 59 INCH WINGSPAN HAND LAUNChNOSE BEARINGS BRASS WASHERS PROPS 4TO 9 CUFF SOAR TARTRUBBER TAN DUMMY CYL CLEAR VINTAGE WHEELS 300 PLANS TISSUEMANY MORE KITS C02 ENGINES KIT $34 NGERFORD SILK S STEEL SPOKED WHEELS 2 3 CHCOMPLETE CATALOG $200 BOX 710399-MASANTEE CA 92072 TEL 619 448-1818FAX 619 448-1833 f-UuyhuI5ff SCALE WHEELS RADIO CONTROL ROL-UNE -FLIGHT VINTAGE 2 3 5, 6% sizes 3/4 1 11/4 1 4 4LLOAU U SOS GOLDEN AGE sizes2 31/i 13% 11443/i 1145 1/a61/ NEW BALLOON 21/41/ 314514 3% SCALE PILOTS- CYUNDERS- ENGINE KITS MACHINE GUN KITS PLASTIC DISPLAY MODELS Send $3 fully illustrated catalog other kIts accessories DEPT MA PAWNEE ST SAN MARCOS CA 9 October 1990 163 Chosen Rien 0riids ThG Mfg aid kM Aircraft Squply fer its outitmubg ralility SMOOTH CONTOUR 2% 1314 114 3% 11444 2514 PIt SON 1492FORREST CITY ARKANSAS 72hh5 RC Electrics/Kopski Continued page 163 Whether motor used sport competi tion paperweight doesnt matter motor motor motor whatever its used case can described few meaning ful words printed right label Anyway personally dont think should ever motor size /competitive-event rela tionship plenty other ways estab lish competition categories use thing things other motor specs will preempt specsmanship game would evitably engulf us Remember hobby happy should apply lessons elsewhere modeldom history avoid such unhappies motor classes would surely bring So continue encourage adoption meaningful motor descriptions remember its simply purpose describing motors anything else information newcomers Bob s col umn hes talking about belief present nomenclature used electric motors OS 40 etc sufficiently descriptive performance capabilities motors thought motor-labeling system [to de scribed moment] would informative prospective purchaser particular motor Bobs labeling system would involve powerhandling capacity motor watts ex pected capacity handle electric current terms amperes recotnmended input volt age output rpm specifi ed power levels can read complete dissertation April 1987 columa beginning page 47 RMcM Onward Some readers have reacted very posi tively comment July column wherein indicated future columns would once again clude some Electric basics no question Electric growingthis course vir tue Electric beginners joining demonstrates implicit ongoing need basic information Lots readers have reacted photo same issue new electrified Seniorita have written did ues tions Well can tell fully descriptive article covering model similar ones will appear future MAI just dont know Anyway will plenty text photos telling think too can have sort model Incidentally writing July 1 134 flights logged Seniorita other persons have flown part total fellow flew immediately asked bor row plans very friendly very flyable model would encourage interested docile low-key fun flier consider model choice same July issue very personal JERRYS PUMP MOUNT Provides frrm ncnslrp platform attach fuel pump round square jugs spring ten sionsed sand easy transfer jug jug model fit cans also Model J Jug 5495 Model C Gal Can 54 ss Model u Cliv Gal Can $495 Shipping $200 per orde PHONE 5011 6333101 touch John Prestons Safety Comes First column very own prop-chopped right hand readers wrote indicate con cern hope its now OK Well indeed Scarred perfectly OK Luckily Im really very lucky two ways first way respect relative superficiality injury second having caring con cerned reader/friends Thank dem onstrated interest concern Vintage RC mentioned last month along intent build again very first RCa Trixter Beam Some photos follow up new plane built same plans used 1954 represents blend old new Motivation 1954 K&B Green Head 15 no engine control Now its Electric speed control safety con trol system combination modern radio equipment vintage representation two made work together some specially de veloped circuitry vintage part very same Bonner SN escapement used original Beam rubber-powered device upon receipt signal permits partial rotation torque rod latter moves rudder fully direc tion Release signal permits surface re turn neutral next signal command repeats first action except case rud der now moves full opposite direction next signal repeats first rudder direction on other words Left Right sequential pilot has remember what did last Reread preceding think about Yes thats what really said special circuit mentioned allows chan nel five output Ace R/C Silver Seven re ceiver drive escapement installed push button switch transmitters channel five put changes normally transmitted 1millisecond pulse 2-millisecond pulsenot unlike retract switch except hold ton signal effect airborne decoder circuit similar electronic On/Off switch motor often used Electric Sailplanes fact first used just such product Beam too glitchy often allowed escapement cycle mess up mental count command given last made new Beam real thrill everyone flight line fly new circuit fixes has never skipped Anyway except motor control new Beam flies just like old days RC rudder full Left neutral full Right plane sort Free Flight course inter rupted sudden flight path changes Im hav ing great Electric time Modern Electric system installationand particular system wiringwas subject talk recent club meeting well re HAND MADE IN THE USA Pit spec lal Holds props 18 Accepts cans ju s Enclosed Storage Smallest Size Youll LOVE IT! Two drawers plus big p storage compartment Panel & Battery corn partment P rop cornpartment Opens TOP FRO Lightweight sturdy attractive KITS IASSEMBLED ITM FUEL OOF FINISM INSIDE & OUTS ASSMFINISHED .... $7995 Oliws available SASE fry info Superbly Engineered Hand Crafted Flight Support Unts Assembled units include gal METAL CAN Attractive Durable Oak 1/4 Ply Construction Measures 19 xlOs 135 Holds youd thinkl Protektor ISmIIIBr Topqualtyconstruction sttractive& durableoakplywiththick black textured foam protect ~jr valuable nent ot dual ransmitter unts rhe very bestl Dual Unite PERFECT emitter & chargera BhtL Padw Tad & onlal Complete Kit completely assembled & finIshed SINGLE KIT .$2995 SGL FinfAssn..... $3995 DUAL KIT.... $3495 DUAL Fin/ Assrn 4695 SASE FREE BROCHURE SEE YOUR LOCAL DEALER OR CALL US 11i Continental U S Sat 8-5 MST ORmoney od NEAT STUFF 45 16th Street West Billings MT 59102 III pani ul ngIne YOt 2cyc veiny Area 1100 sqin 1218 4cyc Machine Cut Wood Kit including wire landing gear & wing joining hdwe VtSA & MC accepted $120 Add 500 post & handling Add 300 COD Ohio residents add 60% tax free Catalog send SASE Air Flair1-513-878-7487 PO Box 2075 Fairborn Ohio 45324 October 1990 167 J & L ENTERPRISES C c $ $ $ $ $ $ % Home Video Buffs 4 video used will receive $50 tape content used becomes property RC Funnies formats accepted Send orginal tape no copies will return tape enclose $5 postage handling Set tape proper segment brief written explanation Send video anything funny new interesting nes4 3493 Scottwood Dr. Green Bay WI 54311 ceived got idea some similar discus sion would again appropriate basics topic topical area has covered piece meal fashion throughout past years col umn However its time review/update some old some new ideas examples necessity will require col umn month well look some generalities begin detailed discussion next De cember column intent help transition store-bought custom wiring/installa tionseven now feel such beyond ability normally think Electric stuff model comprised three things motor battery everything else simplest view everything else basically what connects first two together makes everything work However everything else can include quite variety components wiring options example control choices include speed controls electronic On/Off switches servo-driven switches no control recommended choices further expanded existence products several competing manufacturers theres problem connector variety its frequent occurrence competing products dont readily interconnect questions Does fuse go before speed control after should arming switch goor need now Which wire cut Red black much goes well questions will answered Before detail beginssome preaching Electric installations fused will fly fuse Period strongly recommend system does include fuse get Well see Personally Id like see AMA require properly installed system fuse part con ditions insurance no excuse having fuse distinct safety consideration please dont anyone tell works better Power loss associated prop erly installed fuse peanuts dont care youre competition next chapter verse concerns arming switches view another sys tem safety item also downright practical re quirement well arming switch mas ter control Electric power system Its unlike main circuit breaker wiring sys tem home switch never driven servo servos have known glitch stall always mounted surface model ready ac cessibility makes everything workor can shut everything down easily overrides thing else power system including con trol radio may have over system operation Its last thing turn before takeoff first thing turn off right after landing dont have plane should Well see another column concludes Remem ber next November issue annual cov erage AMA Nats wont regular columns except Prestons Safety col umn until December issue Please send mail author address shown header respond correspon dence accompamed self-addressed stamped envelope SASE meantime always Happy Electric Landings Everyone RC Scale/Troy Continued page 57 event can own pace too Naturally must first read rules event AMA 1990-91 Competition Regulations hand book order understand what will ex pected contest after spending few minutes rules youll see detailed documentation package youve fearing long isnt required Fun Scale like can replaced some thing simple picture model box top kit youve built top Scale meets have begun offer Fun Scale added attraction Attend Once youve made commitment enter few such contests can usually count being able rub elbows best bestthe big-name Scale flierswithout intimidation having battle Instead can simply enjoy meeting watching work learning Display best manners contest scene dont overly shy Just like Scale modelers love talk about airplanes first few Scale meets will best opportunlty make friends mentors experienced fliers Approach youll soon find no different or other RC modelers anywhere else Ask let see documentation packages talk about static presentations Ask handled neat little trick models Watch way present flights judges way instruct callers assist flight presentations Pay particular attention highly professional admirable manner true sportsmen handle themselves judge forced take nibble Out egos downgrade watch learn sooner will come grips contest trail Before too long models will show marked improve ment construction flying style will de velop purpose will come know documentation package can important airplane will have learned effective ways preparing will matter time before move take rightful place Sports man Expert Scale Giant Scale classes competition perhaps yourself become mentor another aspiring flier As added benefit youre working toward perfecting models flying skills youll also de veloping two other valuable assetsgood sports manship character After getting involved AMA Fun Scale using opportunity gradually become Scale contest environment perhaps will understand having fun isnt limited fun flys noncompetitive events Scale com petition fliers have fun too Most com petitors very warm people enjoying what trying best can After really fun AT-6/PauI Continued page 60 good sanding Glue tips final carve sand flaps can fit ted joined hinged multiple hinges shown plan serve good purpose 168 Model Aviation n neSc premIeres Oct RC EntertaInment t 1t8 beet Sit bad & relax Smile Laugh Enjoy funny side modeling series 30-45 mm videos will tickle funny bonel collection fun-filled funny moments mound country Great club meetings home entertainment new & exciting tape other month $25 per tape VHS SPECIAL INTRODUCTORY OFFER $$$ SAVE OVER $801 YEAR Suscupno 6 TAPSs -$tiO $9995 $$$SAVE$1102 Yu Suuscuprso 12 TAss -$3G $190 year round enteIainment Credit card orders may placed cafling 1-800-236-9696 Visa & MasterCard amid name address phone please print type subscription amount RC FUNNIES 3493 Scottwood Dr Green Bay WI 54311 GLIDER RETRACTS Servo actuated glider retracts Over center up/do lock Aluminum parts made computer-controlled milling machine 8061 -TE beautifully crafted retracts made finest materials available best offered anywhere Made uSA 1/5 SCALE 3 oz wheel 1 -9/16W x 4L 2H 2/v wheel max 1/4 SCALE TWO TO CHOOSE FROM STO FOR GLIDERS UP TO 10 LBS 52 oz wheel 2W s 3-7/1 6L 2A H 35 wheel max HO FOR GLIDERS OVER 10 LBS 65 OZ 2W 6L 23/vH 35 wheel max ia SCALE 88 OZ wheel 23/4W 61 23/aH 5 wheel max FIVE-FOOT PUSHAOOS-1 /16 Music Wire casing Send stamped self-addressed envelope pricing mare info SCALE GLIDER COMPONENTS 7034 FERN PLACE CARLSBAD CA 92009 6191 931-1438