AMAZING Electric Connection Service worthy superlative because column feature initiated January 90 column has brought continuous reader participa tion anything else ever has beforeuntil month Until now issue has someone list whos seeking connect other local Electric modelers fact going back two issues lots folks doing monthnone can Whatever reason ECS remains available use youd like find others Electric persuasion close just let know writing Ill list info service available individuals clubs Electric meets Late word just has will three unofficial Electric events years Nats Planned events include FAI Class F3E Seven-Cell Class Sailplane AMA event No 610 Class B Sailplane AMA event No 612 know edge last minute maybe will use some folks information contact Mark Nankivil 5206A Devonshire St Louis MO 63109 tel 1-314/ 832-0634 late word years Midwest Electric Flys set July 21 22 backto-back meets hosted two different clubs have two different CDs Saturday meet sponsored Electric Fliers Only CD very capable Ken Myers Ken can reached 1-313/669-9567 Sunday meet sponsored Ann Arbor Falcons CD well-known re spected Keith Shaw Keiths number 1-313/9736309 Both meets will held Falcons field Saline MI both meets put emphasis fun Events willI include popular All-Up/LastDown Dial phone numbers given previously get details August 5 date set Midwest RC So ciety Electric Fun Fly meet offers AlI-Up/ speed control adjustment accesory cord described column left Lampcord wire Sermos connectors end banana plugs other 100-ohm 10-watt resistor soldered across two wires right cord use Kopskis Senior Skyvolt sets up its Horak speed control Cord plugs speed control replaces normal motor power leads DVM shows speed control operation spinning prop worry about Small screwdriver chosen properly fit N 5 adjustment controls Horak 42 Model Aviation Radio Control Electrics Bob Kopski 25 West End Dr Lansdaie PA p446 THIS MONTHS TOPICS 1 Electric Connec tion Service 2 Electric meetsThe Nats Michi gan Michigan New York 3 Reader reactionspeed control diodes 4 Reader reactionspeed control chokes 5 Speed control adjustments 6 mall show 7 Electric referenc es n writings Randyl Britten white jacket answers shoppers questions about Electrics display PSEMFs mall show Olympia WA Twin-engine Boeing 247 foreground belongs Ben Almojuela planes display photo Club made lots friends WW i steaith bomber Nol An Amptique derivative James Jager Parchment Ml Leisure 05 motor has 251 reduction drive turns 9-in props 7 800-mAh NI-Cd cells Wing span shortened 51 Hailco aluminum landing gear substituted kit original KRC filers go first class pilot station club field comforts homeexcept backyard much bigger Guess car sports Electrifying message first state like wise Bob Kopaki did Pennsylvania Last-Down Best Scale Best Aerobatic Most Im pressive Pilots Choice events CD Jeff Hauser 18036 Winchester Dr Northville MI 48167 tel 1-313/348-5253 Voltaires New York have scheduled meet August 19 will held Mo hawk Valley RC Club field fun fly events scheduled include All-Up/Last-Down Most Rolls Most Loops Spot Landing Charge Touch n Go last sounds like lot funand can use plane Hummmm Ill have talk authorities KRC about info contact Bill Griggs CD PO Box 493 Westmoreland NY 13490 tel 1-315/859-0855 John Fleming tel 1-315/622-3178 Jim McMaster tel 1315/676-4870 way John gentleman walked away lots $$ 89 KRC meet having taken AU/LD Maxi-Flight events used stock Electra jaimned SR battery packs See column January 90 issue watch out killer John May 90 issue hardly hit streets reader input began flow regarding dis cussion diodes used speed controls column discussed importance properly selecting diodes especially used highrate controls person started reader Steve Hageman suggested high-rate controls must use diodes rated maximum motor current Reader input since including dustry has argued may quite case reader sent several letters analyses argue case much less maximum motor current rating diodes So what really case dunno number varying opinions lack time pursue details myself Im just waiting see what settles out meantime interested invited write subject Thanks input folks Its sort thing lets know youre out thereand interested consider con tent columns average period time youll see am trying offer things Continued page 150 Kraft Midwest Inc 115 E Main Northville Ml 48167 313 348-0085 FAX 313 348-417 Ultra Narrow Band AM Receiver Model KMRDC4-7A Years developing worth wait Special Agreement RCD Rxs SO & 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 Ruff Stuff$115 per sheetMini Glue ripsMd 20% otaI order shipping 4for $105 Tee Tray Lots Good Stuff Bar $210 gn Corporation $300 LLJ./ PO Box 3384 Torrance CA 90610 / $275 models fill need hotdog show-off sport plane Knife edge take-offs flat spins snaps will anything can Foam wing fuselage tail lite ply balsa builds quick lands like trainer Flying weight 84 -10 lbs 92 13 lbs Ohio 0SUPERSTAR PRODUCTS INC 76RIDGEWAY ROADKENSINGTON OHIO 44427 2162231950 August 1990 43 Features Dual conversion Dual AGC Dual Crystal Ceramic Filters 50 53 72 75 Mhz ectors Krafl styles Deans World & specials List Prices Special Warp 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-$10 Mini Sander F SPORTOBATIC 79~ 18995 84 1 20 4cycle 90 2-cycle T 2000 2500 3000 18 NEW 05 BGX13500 Mere Fun 62Y2 inches 770 square inches 10cc 90 120 four stroke Designed AMA FAI Turn-around pattern Foam wing stab 3-32 Balsa sheet covering Tricycle conven tional gear fixed retracts Rear side exhaust fiber glass canopy Very positive maneuverable XLT SPECIFIC Wing Span65 inches Length65 inches Wing Area845 square inches Recommended Engine Size 10 cc 90 120 four stroke XLT designed tuned pipe re tract landing gears Capable AMA Turn-around pattern Rear side ex haust SPECIFICATIONS Wing Span Wing Area Engine Size 63Y4 inches 700 square inches 50-60 Glow 90 four stroke fun sport pattern orturn-around can done Utter Chaos completely built up Balsa construction Canopy engine mount included years proven flying reliablity BRIDI AIRCRAFT DESIGNS INC 23625 Pineforest Lane Harbor City California 90710 213 549-8264 326-5013 SEE YOUR FAVORITE HOBBY SHOP OR RETAIL OUTLETW Dealer Inqurles Invited made members club its reg ular contributors Sailpianer extraordinaire Brian Chan La-Tech Stuff column gives helpful hints insights various areas modeling latest edition discusses some characteristics pushrods servos Pushrods function transmit control motion servos control sur faces play very important role control ling airplane pushrods installed properly less useless doesnt matter good RC unit cant trans mit motion control surfaces through sloppy control linkage ie cannot control airplane several pushrod systems available market come sizes shapes Lets first talk about commercially available linkages common ones made nylon tubing eg Nyrods Theyre ny lon tubes another nylon tube inside pushrod very light weight dimensionally stable respect changes temperature nice hot summer day ar rive flying site have plane trimmed 600 F temperature reaches 900 F noon plane doesnt fly like previous flight nylon expandednot much just enough change trim especially longer pushrods installed Sailplane three feet long isnt uncommon Theres new system Laser Rod Du-Bro just coming market claims dimension ally stable 75% less growth shrinkage will still change due temperature fluctua tions also nylon-tubing-with-steelcable system nylon housing steel ca ble better types work better hous ing anchored side fuselage en tire length housing art picking cables kinds steel cable some pushing some pulling pulling versions usu ally flexible might think flexible kind better Wrong Theyre great under ten sion ie pulling can compress means theyre shorter compressed thus creating sloppiness flutter control surfaces best kind cable use kind called 7 x 1 have seven wires wrapped around single center core less flexible center core keeps cable same length being pushed pulled its relatively straight line between servo control horn can replace cable length pi ano wire best way because piano Continued page 169 RC Electrics/Kopski Continued page 43 Electric fliers interests Chokes installed receiver leads speed controls discussed December 89 col umn offering discussed simple low-cost solution stubborn motor noise problems encountered some receivers found last summer putting small radio frequency RF choke three speed control leads connect receiver could make difference between flying being able fly chokes available Ace R/C Inc p/n LL 106 Since column appeared Ive received sev eral reader inputs also found comment an150 Model Aviation other column indicating success method So far no has reported failure readers may having impossible re ceiver motor noise problems may refer once again past issue possible solution difficulties includes full info no guarantees will fix cases its worth shot since total cost less $2 kind enough commentthank Speed control adjustments seem pose prob lems some modelers Id like offer some help speed control Ive seen has least adjustment screw have two Ive seen three special situation adjustments basically used match up operation control transmitters throttle stick operation Adjust ments necessary because pulse width modulation characteristics transmitters vary because would rather difficult and/or costly build speed controls having pre cise operational characteristics no adjust ments Besides adjustments allow personaliza tion control operation Thus adjust ments used bring together almost ra dio almost speed control almost per sonal preferences about things should operate what does mean means very likely given speed control adjustment set up liking radio brand may work same another brand would have readjusted means although may like control tune-up because harmo nizes transmitter control stick opera tion may preferred another flier perhaps its best planes Heres detail Normally speed control should adjusted throttle stick trim fully retarded down position motor completely off Also throttle stick fully forward up motor should fully course stick intermediate position motor should some intermedi ate speed detail al ways best have deadband about two clicks throttle stick stick down motor fully off click two INSOLE S SIGECET SCALE PLANS & 000IIOTVTV1DOA 0 3L0 MODEL PLANS 80 50CC CATALOG fS\ NlEERYS MOUNT S9,V9 I9V,SI009IR, SES S ER V ICE 09000 31VV9V Pj1, S VIEWS I,, SCALEPLA,AN oPoooS,,ce ANS ENLARS NO3209 Mdion AR S e,bR 0 N C 27403 0 0 5 9 SCALE DOCUMENTATION9 9 292 0239 J 4 L EN $1695Propeller Drill Jigs 68 Self aligns exIsting prop hole Wabra Bully a-Dolmar Zenos um II SunCraft 1617 LoaTamasesAlbuq NM 87102 505-842-9646 SPEwic Wing Span Wing Area Engine Size AIRCRAFT BIRCH PLYWOOD Vi/8INCH BALSA WOOD1/8 3/16 STICKS1/8 0 1/4 1/8 0 3/8 1/16-INCH3646 1/8 1/2 1/181/16081/8 3/4 1/183/32073/16-INCH 1/18o1/80811 1/183/1609133/1803/16 1/161/410153/1801/4 1/1613/813173/18 3/8 1/1601/218203/18 1/2 1/1613/421283/18 3/4 3/32-INCH3648 3/32 13/320811 3/3211/80813 3/3213/181015 3/3211/41316 3/32 03/81418 3/321 1/21621 3/32 1 3/42431 Dooble Balsa Wood Prees Spruce Basswood Stied 1/4-INCH 1/4 0 1/4 1/4 0 3/8 1/4 0 1/2 1/4 0 3/4 5/16-INCH 5/16a5/16 5/16o3/8 5/160 1/2 0/18o3/4 36 08 11 13 16 17 25 36 13 14 16 18 28 36 16 18 21 31 36 20 22 27 38 46 3/6-INCH3646 113/803/82737 103/8s 1/23041 173/803/44460 21 1/2-INCH3645 1/20 1/23745 461/2o 3/45270 TRIANGULAR 17 19 CUT BALSA 211/do 1/403624 253/8 o 3/8 o 3625 381/201/203637 3/4 0 3/4 0 3647 4610103661 21BALSAPLANKS 283/403036179 29102036164 42103036230 46104036303 202036230 272s3o36329 302o4o36464 36303038490 523o4o36680 BALSA SHEETS 1-INCH 1/160 1 3/32 0 1 1/8 o 1 3/160 1 1/40 3/8 o 1 1/20 1 2-INCH 1/32 o 2 1/1602 3/32 0 2 1/8 02 3/1602 1/4 02 3/8 o 2 1/2 02 3-INCH 36461/3203 1/1603 27363/32 0 3 3040 1/803 33443/1603 3749 r/4 03 41575/160 3 03723/8 0 3 6588 1/203 36484-INCH 30401/3204 36 481/1604 41 543/320 4 46601/804 54723/1604 63841/404 771033/804 1131501/204 3646 4053 4358 5270 60 80 72 95 84 112 103 134 120 160 1 50 200 36 46 65 67 73 101 82 109 95126 114 151 131 193 182 271 219 325 1/640120 12182 1/64 012024364 1/64012048728 1/84o48o482912 1/3206012 60 1/320 120 12119 1/32012024237 1/32o12o48473 1/16o6o12 59 1/160 120 12117 1/16012024234 1/160 12048468 3/320601281 3/32012012181 3/32 0 12024362 3/32 0 12048723 1/806012100 1/80 120 12198 1/80 12024397 1/8 0 12048794 3/160601274 3/16012012146 3/160 120 24283 1/4 060 12 1/4 0 120 12 1/40 12024 1/4 0 120 48 3/8 0 120 12 3/8 0 12 0 24 3/8 0 12 0 48 1/2 0 12 0 12 1/2 0 12024 1/2 0 12048 74 1 46 2 93 585 1 80 360 730 2 02 405 8 08 LITE PLYWOOD 1/801201261 1/60 12024122 1/80 12048244 TAPERED TRAILING EDGE3646 1/80 1/22230 3/16 03/42940 1/4014255 3/16o12o48585 5/16o1o4461 3/80 5272 * OPEN TO THE PUBLIC * Superior Aircraft Materials 12020-G Centralia iian Gardens California 90716 865-3220 Handling Charge $500 $300 COD mum Order $2000 plus UPS accept Personal checks COD fornia Residents add 6% Sales Tax spare Similarly motor should reach fullon condition click two short maximum stick throw deadhands always assure can get full off full some margin both safety reasons accommodate small drift may occur electronics due temperature effects whatever theres Enter throttle trim knob transmitter What trim knob often matter personal prefer ence prefer set adjustments stick operation described above trim fully down off way know stick fully control over range dont have won der trim set right Also using total stick motion gives feel fin est control over full power range However sometimes also try arrange things stick full down off mo tor operation would just begin trim knob set about midrange way should ever want assure motor never fully off flight can use trim knob set some mini mum low-speed level course does fringe limits stick operation described previously adds some versatility very useful some planes adjustment versatility just mentioned difficult often impossible achieve single-adjustment speed controls because simply cant control two independent param eters single variable Controls two trim screws use determine con trol just begins operate other adjustment used establish upper range limit Some manufacturers describe adjustments differently using labels neutral range general effect same Also its typically case adjustments interact Thus might adjust full off full find latter af fected former may work other way around too can indeed very confusing frustrating often made inadequate instructions conditions lead lengthy adjustment sessions during time running motor draining battery quickly may threat safety Well life can made easier Two photos month show use simple accessory cord configured shown help set up controls cord has connectors end plug speed control output instead connecting motor case its done Sermos connectors Anyway eliminates major annoyancethe running motor other end cord has connectors plug meter nearly always ba nana plugs Finally cord has built-in load e substitute motor control can supply power something use 100-ohm 10-watt resistor wired across two cord conduc tors shown resistor Radio Shack part number 271-132 relatively light load meaning does take much current battery drain nowhere near what could motor connected gives much time work control adjustments before battery runs down means youre under pressure time should able better job speed control tune-up having worry about taking too long doing Since variety controls mar ket its describe associated tos Besides dont have em Therefore recommend charge motor battery install accessory cord described set about follow instructions control Instead using motor speed tach ear guide adjustments simply watch volt meter digital meter shown an alog classic moving-needle type can also used although affords lower resolution youll have watch needle closely Keep mind operational description above prepared go back forth between adjust ment screws control has two case single variable set up best compro mise stick range can achieve Ive never seen case can damage anything playing adjustments can turn screws assurance Also Ive no ticed some screw adjustments very sensi tive make small turns screwdriver cases Take notes have can know what screw does what direc tion future reference give expensive control some respect use right tool prop erly sized fitting screwdriver can make adjustment effort much easier abuse trim screws same time get adjustments liking accessory cord can reconnect motor verify results real Heres hoping find information useful helpful Puget Sound Electric Model Fliers display booth Capital Mall Show Olym pia WA spring Ben Almojuela man aged booth wrote tell well Electric display received along sev eral other displays show tells folks didnt know its possi ble fly electric power large amount total interest came Gas crowd Furthermore Electric guys able two things wet power people couldnt like run motors booth fly park ing lot before opening hours beyond PSEMF building Phasoar booth dur ing show just show easy Talk about getting attention Have ever noticed often thats necessary heard speak softly Nice work Benand PSEMF should thats needed say other Electric Continued page 154 August 1990 151 Ultimate FOAM CUTTING WIRE Out performs music wire end nichrome Pkg Send $400 plus $225 shipping handl/ng Worden WoodworksDealer Inquiries 14935 Marie Werren MI 48093Invited 313-294-0890 Rubber ne Power Free Flight Display Control Line Electole Power RIC Airplanes new illustrated 32 pegs tabloid size catalog U5 da $100 Foreigh *300 Penn Valley Hobby Center 837-A W Main St Lansdala PA 19448 215- 388-0770 LATHES FOR THE AVIATION MODELER F ]3LUEAIDGE UNIMATS 20/ MACCICERO CR5 5 soCOMPACTSI ISfIERUNEI IPO sox v UNIMAT 51 HuRRICANE WV 25526 UNIMAT PC 1562-3838 ICATALOG $100 Plus toll iree nuryter orders & questIons PRECISION MODEL PRODUCTS rzzzjz Made USA BARSTOCK ALUMINUM SPINNERS Part NoSize 11-150-B .. 1-1/2 11-175-B ..1-3/4 11-200-B 11-225-B 4 11-226-B .. 2-114 FAt . 11-250-B .. 2-1/2 11-251-B .. 2-1I2FAI 75-B .. 2-3/4 11-276-B 3/4 FAt 00-B 11-301-BFAt 11-325-B 14 11-350-B '3-112 11-375-B /4 11-400-B4 RetailApprox PriceWeight S1395056 oz 1495095 02 1595100 02 1695160 02 1895150ox 1695190ox 2095170oz 229522002 249520002 269526002 289525002 3695340ox 499547002 5995520ox 699557002 3 Pieces Cone Back Plate Retainer Screw Note 3 4 Blade Spinners Available Sizes Add $300 Per Spinner Part NoSize 11-140-A -26 T1-147-A '114-2817mm . 11-610-A . 6x 10mm TT-710-A 10mm TT-516-A 5/16-24 16-A 5/16-24/8mm 11-810-A . 8 x 10mm 11-625-A . 8 x 125mm 11-375-A 3/824 11-125-A 125mm RetailApprox PriceWeight $495061 02 49506102 49506302 49568202 495. 076 02 495. 076 02 495 .076 02 495075 02 595117 02 59511502 3 Pieces Nut Washer Machined Bushing Add $350 Shipping Handling Prices subject change notice ROMCO MFG INC OX 836 SOUTH HOUSTON TEXAS 77587 713 943-1867 RC Electrics/Kopski Continued page 151 ctubs around country Go Electric references often requested read ers Im listing some Id like com ment Ive yet seen myself probably will time goes along no particular order Choose RC Model Engines Mo torbooks International has extensive electric motor section Advanced Guide RC Sport Flying TAB books has chapter Electrics Beginners Guide Electric RC Flying Im sure publisher written Doug Pratt also gentleman runs ModelNetAMAs CompuServe forum may have realized column some others transmit ted Model Aviation via CompuServe upload monthly text using computer use write modem sends infor mation digitally over phone lines can think CompuServe sort holding tank information send usually next day Doug downloads AMA modem right AMAs computer Presto Great stuff just like Electric back references turns out ambitious Doug also has segments dealing Electric several RC Video Magazine tapes dont have complete list Im sure check folks can find Out Building Flying Electric-Powered Model Aircraft Mitch Poling Model Builders Elec tric columnist Its published Kalmbach Electric Flight Dave Day published Ar gus Books Introduction Electric Flight written Ian Peacock dont know publisher Quiet Revolution Bob Boucher As tro granddaddy Electric books believe oldest above Incidentally publications tapes available Zenith Books P0 Box 1 Osceola WI 54020 Send catalog possible course Ive missed some Id appreciate input Ill list ad ditions ftiture columns Finally monthly Electric columns several magazines besides MA include no special order RCM Flying Models RC Re port Model Builder Model Airplane News latter quiet column including just Electric might say interesting fact about authors columns friendly among ourselves Now never knew worthy note until recently pointed out some readers perceive us ri vals Rivals Nope No way As far Im concerned thats just case may other Electric areas authors dont feel myself dont see coming way dont sense among other Elec tric columnists thing know some other colum nists personally both respect con sider friends fact us have flown together Weve shared certain col umns beforehand upon occasion some us have never met routinely communicate letter sometimes phone No other author has need view rival far Im concerned does mean see everything exactly same way time variance opinion preference Thats good area endeavor ever got unpleasant manner implied rivalry Id back away hobby happy has way what another column closes Please ad dress comment query author given column header will respond mail accompanied SASE Happy Hununmmmimg Landings Everyone RC Scale/Parsons Continued page 45 arced over impacted ground simultaneous ly Spectacular end reports RC history made following weekend big bird fly-in BB Webers Bomber Field 13 B-17s parked pit area No didnt get air together grand flyby Saturday afternoon tied down nose-to-tail taxiway 52 count em engines runningquite sight sound Bomber Field BB Webers own private RC field really something Its 650 x 60ft blacktop runway surrounded grass has ample overruns huge pavil ion expansive workbenches 40-ft-high air-conditioned control tower Ah Texans BB loves B-17s having four five 10-footers exactly noon Sunday 130 pilots spectators treated piece de resistance fly-in CAFs B-17 Tex Raiders appeared distance pro ceeded make several close-in one-wing-low flybys magnificent sight extra treat photographers video camerapersons present took in-flight pictures both CAFs Tom Streets Texas Raiders similar flight titudes cannot tell apart Scale RCers have come long way Word has two outstanding Big Bird fly-ins will again play same back-to-back weekends October year Watch big change pace location lets go 154 Model Aviation PROP NUT ADAPTORS V THE GUARDIAN ANGEL TM CRASH PREVENTION SYSTEM 1 Tests monitors R/C electronics CALL 18007299210 FREE information ThIE j Antiques Military Civiliar Helicopters Sajiptanes 2700 plus" -cow *awings color FOTO-PAKSrig KO4CUFAN 01 L4TNES MILLS METIILS BOOKS ourPRECISIIN INSTRUMENTS COMPLETE TITILOC $200 1OOOs items cRihff2C4MPIELLODU Ce ~'Sprgf1d OH 5505 M513 3028562
Edition: Model Aviation - 1990/08
Page Numbers: 42, 43, 150, 151, 154
AMAZING Electric Connection Service worthy superlative because column feature initiated January 90 column has brought continuous reader participa tion anything else ever has beforeuntil month Until now issue has someone list whos seeking connect other local Electric modelers fact going back two issues lots folks doing monthnone can Whatever reason ECS remains available use youd like find others Electric persuasion close just let know writing Ill list info service available individuals clubs Electric meets Late word just has will three unofficial Electric events years Nats Planned events include FAI Class F3E Seven-Cell Class Sailplane AMA event No 610 Class B Sailplane AMA event No 612 know edge last minute maybe will use some folks information contact Mark Nankivil 5206A Devonshire St Louis MO 63109 tel 1-314/ 832-0634 late word years Midwest Electric Flys set July 21 22 backto-back meets hosted two different clubs have two different CDs Saturday meet sponsored Electric Fliers Only CD very capable Ken Myers Ken can reached 1-313/669-9567 Sunday meet sponsored Ann Arbor Falcons CD well-known re spected Keith Shaw Keiths number 1-313/9736309 Both meets will held Falcons field Saline MI both meets put emphasis fun Events willI include popular All-Up/LastDown Dial phone numbers given previously get details August 5 date set Midwest RC So ciety Electric Fun Fly meet offers AlI-Up/ speed control adjustment accesory cord described column left Lampcord wire Sermos connectors end banana plugs other 100-ohm 10-watt resistor soldered across two wires right cord use Kopskis Senior Skyvolt sets up its Horak speed control Cord plugs speed control replaces normal motor power leads DVM shows speed control operation spinning prop worry about Small screwdriver chosen properly fit N 5 adjustment controls Horak 42 Model Aviation Radio Control Electrics Bob Kopski 25 West End Dr Lansdaie PA p446 THIS MONTHS TOPICS 1 Electric Connec tion Service 2 Electric meetsThe Nats Michi gan Michigan New York 3 Reader reactionspeed control diodes 4 Reader reactionspeed control chokes 5 Speed control adjustments 6 mall show 7 Electric referenc es n writings Randyl Britten white jacket answers shoppers questions about Electrics display PSEMFs mall show Olympia WA Twin-engine Boeing 247 foreground belongs Ben Almojuela planes display photo Club made lots friends WW i steaith bomber Nol An Amptique derivative James Jager Parchment Ml Leisure 05 motor has 251 reduction drive turns 9-in props 7 800-mAh NI-Cd cells Wing span shortened 51 Hailco aluminum landing gear substituted kit original KRC filers go first class pilot station club field comforts homeexcept backyard much bigger Guess car sports Electrifying message first state like wise Bob Kopaki did Pennsylvania Last-Down Best Scale Best Aerobatic Most Im pressive Pilots Choice events CD Jeff Hauser 18036 Winchester Dr Northville MI 48167 tel 1-313/348-5253 Voltaires New York have scheduled meet August 19 will held Mo hawk Valley RC Club field fun fly events scheduled include All-Up/Last-Down Most Rolls Most Loops Spot Landing Charge Touch n Go last sounds like lot funand can use plane Hummmm Ill have talk authorities KRC about info contact Bill Griggs CD PO Box 493 Westmoreland NY 13490 tel 1-315/859-0855 John Fleming tel 1-315/622-3178 Jim McMaster tel 1315/676-4870 way John gentleman walked away lots $$ 89 KRC meet having taken AU/LD Maxi-Flight events used stock Electra jaimned SR battery packs See column January 90 issue watch out killer John May 90 issue hardly hit streets reader input began flow regarding dis cussion diodes used speed controls column discussed importance properly selecting diodes especially used highrate controls person started reader Steve Hageman suggested high-rate controls must use diodes rated maximum motor current Reader input since including dustry has argued may quite case reader sent several letters analyses argue case much less maximum motor current rating diodes So what really case dunno number varying opinions lack time pursue details myself Im just waiting see what settles out meantime interested invited write subject Thanks input folks Its sort thing lets know youre out thereand interested consider con tent columns average period time youll see am trying offer things Continued page 150 Kraft Midwest Inc 115 E Main Northville Ml 48167 313 348-0085 FAX 313 348-417 Ultra Narrow Band AM Receiver Model KMRDC4-7A Years developing worth wait Special Agreement RCD Rxs SO & 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 Ruff Stuff$115 per sheetMini Glue ripsMd 20% otaI order shipping 4for $105 Tee Tray Lots Good Stuff Bar $210 gn Corporation $300 LLJ./ PO Box 3384 Torrance CA 90610 / $275 models fill need hotdog show-off sport plane Knife edge take-offs flat spins snaps will anything can Foam wing fuselage tail lite ply balsa builds quick lands like trainer Flying weight 84 -10 lbs 92 13 lbs Ohio 0SUPERSTAR PRODUCTS INC 76RIDGEWAY ROADKENSINGTON OHIO 44427 2162231950 August 1990 43 Features Dual conversion Dual AGC Dual Crystal Ceramic Filters 50 53 72 75 Mhz ectors Krafl styles Deans World & specials List Prices Special Warp 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-$10 Mini Sander F SPORTOBATIC 79~ 18995 84 1 20 4cycle 90 2-cycle T 2000 2500 3000 18 NEW 05 BGX13500 Mere Fun 62Y2 inches 770 square inches 10cc 90 120 four stroke Designed AMA FAI Turn-around pattern Foam wing stab 3-32 Balsa sheet covering Tricycle conven tional gear fixed retracts Rear side exhaust fiber glass canopy Very positive maneuverable XLT SPECIFIC Wing Span65 inches Length65 inches Wing Area845 square inches Recommended Engine Size 10 cc 90 120 four stroke XLT designed tuned pipe re tract landing gears Capable AMA Turn-around pattern Rear side ex haust SPECIFICATIONS Wing Span Wing Area Engine Size 63Y4 inches 700 square inches 50-60 Glow 90 four stroke fun sport pattern orturn-around can done Utter Chaos completely built up Balsa construction Canopy engine mount included years proven flying reliablity BRIDI AIRCRAFT DESIGNS INC 23625 Pineforest Lane Harbor City California 90710 213 549-8264 326-5013 SEE YOUR FAVORITE HOBBY SHOP OR RETAIL OUTLETW Dealer Inqurles Invited made members club its reg ular contributors Sailpianer extraordinaire Brian Chan La-Tech Stuff column gives helpful hints insights various areas modeling latest edition discusses some characteristics pushrods servos Pushrods function transmit control motion servos control sur faces play very important role control ling airplane pushrods installed properly less useless doesnt matter good RC unit cant trans mit motion control surfaces through sloppy control linkage ie cannot control airplane several pushrod systems available market come sizes shapes Lets first talk about commercially available linkages common ones made nylon tubing eg Nyrods Theyre ny lon tubes another nylon tube inside pushrod very light weight dimensionally stable respect changes temperature nice hot summer day ar rive flying site have plane trimmed 600 F temperature reaches 900 F noon plane doesnt fly like previous flight nylon expandednot much just enough change trim especially longer pushrods installed Sailplane three feet long isnt uncommon Theres new system Laser Rod Du-Bro just coming market claims dimension ally stable 75% less growth shrinkage will still change due temperature fluctua tions also nylon-tubing-with-steelcable system nylon housing steel ca ble better types work better hous ing anchored side fuselage en tire length housing art picking cables kinds steel cable some pushing some pulling pulling versions usu ally flexible might think flexible kind better Wrong Theyre great under ten sion ie pulling can compress means theyre shorter compressed thus creating sloppiness flutter control surfaces best kind cable use kind called 7 x 1 have seven wires wrapped around single center core less flexible center core keeps cable same length being pushed pulled its relatively straight line between servo control horn can replace cable length pi ano wire best way because piano Continued page 169 RC Electrics/Kopski Continued page 43 Electric fliers interests Chokes installed receiver leads speed controls discussed December 89 col umn offering discussed simple low-cost solution stubborn motor noise problems encountered some receivers found last summer putting small radio frequency RF choke three speed control leads connect receiver could make difference between flying being able fly chokes available Ace R/C Inc p/n LL 106 Since column appeared Ive received sev eral reader inputs also found comment an150 Model Aviation other column indicating success method So far no has reported failure readers may having impossible re ceiver motor noise problems may refer once again past issue possible solution difficulties includes full info no guarantees will fix cases its worth shot since total cost less $2 kind enough commentthank Speed control adjustments seem pose prob lems some modelers Id like offer some help speed control Ive seen has least adjustment screw have two Ive seen three special situation adjustments basically used match up operation control transmitters throttle stick operation Adjust ments necessary because pulse width modulation characteristics transmitters vary because would rather difficult and/or costly build speed controls having pre cise operational characteristics no adjust ments Besides adjustments allow personaliza tion control operation Thus adjust ments used bring together almost ra dio almost speed control almost per sonal preferences about things should operate what does mean means very likely given speed control adjustment set up liking radio brand may work same another brand would have readjusted means although may like control tune-up because harmo nizes transmitter control stick opera tion may preferred another flier perhaps its best planes Heres detail Normally speed control should adjusted throttle stick trim fully retarded down position motor completely off Also throttle stick fully forward up motor should fully course stick intermediate position motor should some intermedi ate speed detail al ways best have deadband about two clicks throttle stick stick down motor fully off click two INSOLE S SIGECET SCALE PLANS & 000IIOTVTV1DOA 0 3L0 MODEL PLANS 80 50CC CATALOG fS\ NlEERYS MOUNT S9,V9 I9V,SI009IR, SES S ER V ICE 09000 31VV9V Pj1, S VIEWS I,, SCALEPLA,AN oPoooS,,ce ANS ENLARS NO3209 Mdion AR S e,bR 0 N C 27403 0 0 5 9 SCALE DOCUMENTATION9 9 292 0239 J 4 L EN $1695Propeller Drill Jigs 68 Self aligns exIsting prop hole Wabra Bully a-Dolmar Zenos um II SunCraft 1617 LoaTamasesAlbuq NM 87102 505-842-9646 SPEwic Wing Span Wing Area Engine Size AIRCRAFT BIRCH PLYWOOD Vi/8INCH BALSA WOOD1/8 3/16 STICKS1/8 0 1/4 1/8 0 3/8 1/16-INCH3646 1/8 1/2 1/181/16081/8 3/4 1/183/32073/16-INCH 1/18o1/80811 1/183/1609133/1803/16 1/161/410153/1801/4 1/1613/813173/18 3/8 1/1601/218203/18 1/2 1/1613/421283/18 3/4 3/32-INCH3648 3/32 13/320811 3/3211/80813 3/3213/181015 3/3211/41316 3/32 03/81418 3/321 1/21621 3/32 1 3/42431 Dooble Balsa Wood Prees Spruce Basswood Stied 1/4-INCH 1/4 0 1/4 1/4 0 3/8 1/4 0 1/2 1/4 0 3/4 5/16-INCH 5/16a5/16 5/16o3/8 5/160 1/2 0/18o3/4 36 08 11 13 16 17 25 36 13 14 16 18 28 36 16 18 21 31 36 20 22 27 38 46 3/6-INCH3646 113/803/82737 103/8s 1/23041 173/803/44460 21 1/2-INCH3645 1/20 1/23745 461/2o 3/45270 TRIANGULAR 17 19 CUT BALSA 211/do 1/403624 253/8 o 3/8 o 3625 381/201/203637 3/4 0 3/4 0 3647 4610103661 21BALSAPLANKS 283/403036179 29102036164 42103036230 46104036303 202036230 272s3o36329 302o4o36464 36303038490 523o4o36680 BALSA SHEETS 1-INCH 1/160 1 3/32 0 1 1/8 o 1 3/160 1 1/40 3/8 o 1 1/20 1 2-INCH 1/32 o 2 1/1602 3/32 0 2 1/8 02 3/1602 1/4 02 3/8 o 2 1/2 02 3-INCH 36461/3203 1/1603 27363/32 0 3 3040 1/803 33443/1603 3749 r/4 03 41575/160 3 03723/8 0 3 6588 1/203 36484-INCH 30401/3204 36 481/1604 41 543/320 4 46601/804 54723/1604 63841/404 771033/804 1131501/204 3646 4053 4358 5270 60 80 72 95 84 112 103 134 120 160 1 50 200 36 46 65 67 73 101 82 109 95126 114 151 131 193 182 271 219 325 1/640120 12182 1/64 012024364 1/64012048728 1/84o48o482912 1/3206012 60 1/320 120 12119 1/32012024237 1/32o12o48473 1/16o6o12 59 1/160 120 12117 1/16012024234 1/160 12048468 3/320601281 3/32012012181 3/32 0 12024362 3/32 0 12048723 1/806012100 1/80 120 12198 1/80 12024397 1/8 0 12048794 3/160601274 3/16012012146 3/160 120 24283 1/4 060 12 1/4 0 120 12 1/40 12024 1/4 0 120 48 3/8 0 120 12 3/8 0 12 0 24 3/8 0 12 0 48 1/2 0 12 0 12 1/2 0 12024 1/2 0 12048 74 1 46 2 93 585 1 80 360 730 2 02 405 8 08 LITE PLYWOOD 1/801201261 1/60 12024122 1/80 12048244 TAPERED TRAILING EDGE3646 1/80 1/22230 3/16 03/42940 1/4014255 3/16o12o48585 5/16o1o4461 3/80 5272 * OPEN TO THE PUBLIC * Superior Aircraft Materials 12020-G Centralia iian Gardens California 90716 865-3220 Handling Charge $500 $300 COD mum Order $2000 plus UPS accept Personal checks COD fornia Residents add 6% Sales Tax spare Similarly motor should reach fullon condition click two short maximum stick throw deadhands always assure can get full off full some margin both safety reasons accommodate small drift may occur electronics due temperature effects whatever theres Enter throttle trim knob transmitter What trim knob often matter personal prefer ence prefer set adjustments stick operation described above trim fully down off way know stick fully control over range dont have won der trim set right Also using total stick motion gives feel fin est control over full power range However sometimes also try arrange things stick full down off mo tor operation would just begin trim knob set about midrange way should ever want assure motor never fully off flight can use trim knob set some mini mum low-speed level course does fringe limits stick operation described previously adds some versatility very useful some planes adjustment versatility just mentioned difficult often impossible achieve single-adjustment speed controls because simply cant control two independent param eters single variable Controls two trim screws use determine con trol just begins operate other adjustment used establish upper range limit Some manufacturers describe adjustments differently using labels neutral range general effect same Also its typically case adjustments interact Thus might adjust full off full find latter af fected former may work other way around too can indeed very confusing frustrating often made inadequate instructions conditions lead lengthy adjustment sessions during time running motor draining battery quickly may threat safety Well life can made easier Two photos month show use simple accessory cord configured shown help set up controls cord has connectors end plug speed control output instead connecting motor case its done Sermos connectors Anyway eliminates major annoyancethe running motor other end cord has connectors plug meter nearly always ba nana plugs Finally cord has built-in load e substitute motor control can supply power something use 100-ohm 10-watt resistor wired across two cord conduc tors shown resistor Radio Shack part number 271-132 relatively light load meaning does take much current battery drain nowhere near what could motor connected gives much time work control adjustments before battery runs down means youre under pressure time should able better job speed control tune-up having worry about taking too long doing Since variety controls mar ket its describe associated tos Besides dont have em Therefore recommend charge motor battery install accessory cord described set about follow instructions control Instead using motor speed tach ear guide adjustments simply watch volt meter digital meter shown an alog classic moving-needle type can also used although affords lower resolution youll have watch needle closely Keep mind operational description above prepared go back forth between adjust ment screws control has two case single variable set up best compro mise stick range can achieve Ive never seen case can damage anything playing adjustments can turn screws assurance Also Ive no ticed some screw adjustments very sensi tive make small turns screwdriver cases Take notes have can know what screw does what direc tion future reference give expensive control some respect use right tool prop erly sized fitting screwdriver can make adjustment effort much easier abuse trim screws same time get adjustments liking accessory cord can reconnect motor verify results real Heres hoping find information useful helpful Puget Sound Electric Model Fliers display booth Capital Mall Show Olym pia WA spring Ben Almojuela man aged booth wrote tell well Electric display received along sev eral other displays show tells folks didnt know its possi ble fly electric power large amount total interest came Gas crowd Furthermore Electric guys able two things wet power people couldnt like run motors booth fly park ing lot before opening hours beyond PSEMF building Phasoar booth dur ing show just show easy Talk about getting attention Have ever noticed often thats necessary heard speak softly Nice work Benand PSEMF should thats needed say other Electric Continued page 154 August 1990 151 Ultimate FOAM CUTTING WIRE Out performs music wire end nichrome Pkg Send $400 plus $225 shipping handl/ng Worden WoodworksDealer Inquiries 14935 Marie Werren MI 48093Invited 313-294-0890 Rubber ne Power Free Flight Display Control Line Electole Power RIC Airplanes new illustrated 32 pegs tabloid size catalog U5 da $100 Foreigh *300 Penn Valley Hobby Center 837-A W Main St Lansdala PA 19448 215- 388-0770 LATHES FOR THE AVIATION MODELER F ]3LUEAIDGE UNIMATS 20/ MACCICERO CR5 5 soCOMPACTSI ISfIERUNEI IPO sox v UNIMAT 51 HuRRICANE WV 25526 UNIMAT PC 1562-3838 ICATALOG $100 Plus toll iree nuryter orders & questIons PRECISION MODEL PRODUCTS rzzzjz Made USA BARSTOCK ALUMINUM SPINNERS Part NoSize 11-150-B .. 1-1/2 11-175-B ..1-3/4 11-200-B 11-225-B 4 11-226-B .. 2-114 FAt . 11-250-B .. 2-1/2 11-251-B .. 2-1I2FAI 75-B .. 2-3/4 11-276-B 3/4 FAt 00-B 11-301-BFAt 11-325-B 14 11-350-B '3-112 11-375-B /4 11-400-B4 RetailApprox PriceWeight S1395056 oz 1495095 02 1595100 02 1695160 02 1895150ox 1695190ox 2095170oz 229522002 249520002 269526002 289525002 3695340ox 499547002 5995520ox 699557002 3 Pieces Cone Back Plate Retainer Screw Note 3 4 Blade Spinners Available Sizes Add $300 Per Spinner Part NoSize 11-140-A -26 T1-147-A '114-2817mm . 11-610-A . 6x 10mm TT-710-A 10mm TT-516-A 5/16-24 16-A 5/16-24/8mm 11-810-A . 8 x 10mm 11-625-A . 8 x 125mm 11-375-A 3/824 11-125-A 125mm RetailApprox PriceWeight $495061 02 49506102 49506302 49568202 495. 076 02 495. 076 02 495 .076 02 495075 02 595117 02 59511502 3 Pieces Nut Washer Machined Bushing Add $350 Shipping Handling Prices subject change notice ROMCO MFG INC OX 836 SOUTH HOUSTON TEXAS 77587 713 943-1867 RC Electrics/Kopski Continued page 151 ctubs around country Go Electric references often requested read ers Im listing some Id like com ment Ive yet seen myself probably will time goes along no particular order Choose RC Model Engines Mo torbooks International has extensive electric motor section Advanced Guide RC Sport Flying TAB books has chapter Electrics Beginners Guide Electric RC Flying Im sure publisher written Doug Pratt also gentleman runs ModelNetAMAs CompuServe forum may have realized column some others transmit ted Model Aviation via CompuServe upload monthly text using computer use write modem sends infor mation digitally over phone lines can think CompuServe sort holding tank information send usually next day Doug downloads AMA modem right AMAs computer Presto Great stuff just like Electric back references turns out ambitious Doug also has segments dealing Electric several RC Video Magazine tapes dont have complete list Im sure check folks can find Out Building Flying Electric-Powered Model Aircraft Mitch Poling Model Builders Elec tric columnist Its published Kalmbach Electric Flight Dave Day published Ar gus Books Introduction Electric Flight written Ian Peacock dont know publisher Quiet Revolution Bob Boucher As tro granddaddy Electric books believe oldest above Incidentally publications tapes available Zenith Books P0 Box 1 Osceola WI 54020 Send catalog possible course Ive missed some Id appreciate input Ill list ad ditions ftiture columns Finally monthly Electric columns several magazines besides MA include no special order RCM Flying Models RC Re port Model Builder Model Airplane News latter quiet column including just Electric might say interesting fact about authors columns friendly among ourselves Now never knew worthy note until recently pointed out some readers perceive us ri vals Rivals Nope No way As far Im concerned thats just case may other Electric areas authors dont feel myself dont see coming way dont sense among other Elec tric columnists thing know some other colum nists personally both respect con sider friends fact us have flown together Weve shared certain col umns beforehand upon occasion some us have never met routinely communicate letter sometimes phone No other author has need view rival far Im concerned does mean see everything exactly same way time variance opinion preference Thats good area endeavor ever got unpleasant manner implied rivalry Id back away hobby happy has way what another column closes Please ad dress comment query author given column header will respond mail accompanied SASE Happy Hununmmmimg Landings Everyone RC Scale/Parsons Continued page 45 arced over impacted ground simultaneous ly Spectacular end reports RC history made following weekend big bird fly-in BB Webers Bomber Field 13 B-17s parked pit area No didnt get air together grand flyby Saturday afternoon tied down nose-to-tail taxiway 52 count em engines runningquite sight sound Bomber Field BB Webers own private RC field really something Its 650 x 60ft blacktop runway surrounded grass has ample overruns huge pavil ion expansive workbenches 40-ft-high air-conditioned control tower Ah Texans BB loves B-17s having four five 10-footers exactly noon Sunday 130 pilots spectators treated piece de resistance fly-in CAFs B-17 Tex Raiders appeared distance pro ceeded make several close-in one-wing-low flybys magnificent sight extra treat photographers video camerapersons present took in-flight pictures both CAFs Tom Streets Texas Raiders similar flight titudes cannot tell apart Scale RCers have come long way Word has two outstanding Big Bird fly-ins will again play same back-to-back weekends October year Watch big change pace location lets go 154 Model Aviation PROP NUT ADAPTORS V THE GUARDIAN ANGEL TM CRASH PREVENTION SYSTEM 1 Tests monitors R/C electronics CALL 18007299210 FREE information ThIE j Antiques Military Civiliar Helicopters Sajiptanes 2700 plus" -cow *awings color FOTO-PAKSrig KO4CUFAN 01 L4TNES MILLS METIILS BOOKS ourPRECISIIN INSTRUMENTS COMPLETE TITILOC $200 1OOOs items cRihff2C4MPIELLODU Ce ~'Sprgf1d OH 5505 M513 3028562
Edition: Model Aviation - 1990/08
Page Numbers: 42, 43, 150, 151, 154
AMAZING Electric Connection Service worthy superlative because column feature initiated January 90 column has brought continuous reader participa tion anything else ever has beforeuntil month Until now issue has someone list whos seeking connect other local Electric modelers fact going back two issues lots folks doing monthnone can Whatever reason ECS remains available use youd like find others Electric persuasion close just let know writing Ill list info service available individuals clubs Electric meets Late word just has will three unofficial Electric events years Nats Planned events include FAI Class F3E Seven-Cell Class Sailplane AMA event No 610 Class B Sailplane AMA event No 612 know edge last minute maybe will use some folks information contact Mark Nankivil 5206A Devonshire St Louis MO 63109 tel 1-314/ 832-0634 late word years Midwest Electric Flys set July 21 22 backto-back meets hosted two different clubs have two different CDs Saturday meet sponsored Electric Fliers Only CD very capable Ken Myers Ken can reached 1-313/669-9567 Sunday meet sponsored Ann Arbor Falcons CD well-known re spected Keith Shaw Keiths number 1-313/9736309 Both meets will held Falcons field Saline MI both meets put emphasis fun Events willI include popular All-Up/LastDown Dial phone numbers given previously get details August 5 date set Midwest RC So ciety Electric Fun Fly meet offers AlI-Up/ speed control adjustment accesory cord described column left Lampcord wire Sermos connectors end banana plugs other 100-ohm 10-watt resistor soldered across two wires right cord use Kopskis Senior Skyvolt sets up its Horak speed control Cord plugs speed control replaces normal motor power leads DVM shows speed control operation spinning prop worry about Small screwdriver chosen properly fit N 5 adjustment controls Horak 42 Model Aviation Radio Control Electrics Bob Kopski 25 West End Dr Lansdaie PA p446 THIS MONTHS TOPICS 1 Electric Connec tion Service 2 Electric meetsThe Nats Michi gan Michigan New York 3 Reader reactionspeed control diodes 4 Reader reactionspeed control chokes 5 Speed control adjustments 6 mall show 7 Electric referenc es n writings Randyl Britten white jacket answers shoppers questions about Electrics display PSEMFs mall show Olympia WA Twin-engine Boeing 247 foreground belongs Ben Almojuela planes display photo Club made lots friends WW i steaith bomber Nol An Amptique derivative James Jager Parchment Ml Leisure 05 motor has 251 reduction drive turns 9-in props 7 800-mAh NI-Cd cells Wing span shortened 51 Hailco aluminum landing gear substituted kit original KRC filers go first class pilot station club field comforts homeexcept backyard much bigger Guess car sports Electrifying message first state like wise Bob Kopaki did Pennsylvania Last-Down Best Scale Best Aerobatic Most Im pressive Pilots Choice events CD Jeff Hauser 18036 Winchester Dr Northville MI 48167 tel 1-313/348-5253 Voltaires New York have scheduled meet August 19 will held Mo hawk Valley RC Club field fun fly events scheduled include All-Up/Last-Down Most Rolls Most Loops Spot Landing Charge Touch n Go last sounds like lot funand can use plane Hummmm Ill have talk authorities KRC about info contact Bill Griggs CD PO Box 493 Westmoreland NY 13490 tel 1-315/859-0855 John Fleming tel 1-315/622-3178 Jim McMaster tel 1315/676-4870 way John gentleman walked away lots $$ 89 KRC meet having taken AU/LD Maxi-Flight events used stock Electra jaimned SR battery packs See column January 90 issue watch out killer John May 90 issue hardly hit streets reader input began flow regarding dis cussion diodes used speed controls column discussed importance properly selecting diodes especially used highrate controls person started reader Steve Hageman suggested high-rate controls must use diodes rated maximum motor current Reader input since including dustry has argued may quite case reader sent several letters analyses argue case much less maximum motor current rating diodes So what really case dunno number varying opinions lack time pursue details myself Im just waiting see what settles out meantime interested invited write subject Thanks input folks Its sort thing lets know youre out thereand interested consider con tent columns average period time youll see am trying offer things Continued page 150 Kraft Midwest Inc 115 E Main Northville Ml 48167 313 348-0085 FAX 313 348-417 Ultra Narrow Band AM Receiver Model KMRDC4-7A Years developing worth wait Special Agreement RCD Rxs SO & 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 Ruff Stuff$115 per sheetMini Glue ripsMd 20% otaI order shipping 4for $105 Tee Tray Lots Good Stuff Bar $210 gn Corporation $300 LLJ./ PO Box 3384 Torrance CA 90610 / $275 models fill need hotdog show-off sport plane Knife edge take-offs flat spins snaps will anything can Foam wing fuselage tail lite ply balsa builds quick lands like trainer Flying weight 84 -10 lbs 92 13 lbs Ohio 0SUPERSTAR PRODUCTS INC 76RIDGEWAY ROADKENSINGTON OHIO 44427 2162231950 August 1990 43 Features Dual conversion Dual AGC Dual Crystal Ceramic Filters 50 53 72 75 Mhz ectors Krafl styles Deans World & specials List Prices Special Warp 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-$10 Mini Sander F SPORTOBATIC 79~ 18995 84 1 20 4cycle 90 2-cycle T 2000 2500 3000 18 NEW 05 BGX13500 Mere Fun 62Y2 inches 770 square inches 10cc 90 120 four stroke Designed AMA FAI Turn-around pattern Foam wing stab 3-32 Balsa sheet covering Tricycle conven tional gear fixed retracts Rear side exhaust fiber glass canopy Very positive maneuverable XLT SPECIFIC Wing Span65 inches Length65 inches Wing Area845 square inches Recommended Engine Size 10 cc 90 120 four stroke XLT designed tuned pipe re tract landing gears Capable AMA Turn-around pattern Rear side ex haust SPECIFICATIONS Wing Span Wing Area Engine Size 63Y4 inches 700 square inches 50-60 Glow 90 four stroke fun sport pattern orturn-around can done Utter Chaos completely built up Balsa construction Canopy engine mount included years proven flying reliablity BRIDI AIRCRAFT DESIGNS INC 23625 Pineforest Lane Harbor City California 90710 213 549-8264 326-5013 SEE YOUR FAVORITE HOBBY SHOP OR RETAIL OUTLETW Dealer Inqurles Invited made members club its reg ular contributors Sailpianer extraordinaire Brian Chan La-Tech Stuff column gives helpful hints insights various areas modeling latest edition discusses some characteristics pushrods servos Pushrods function transmit control motion servos control sur faces play very important role control ling airplane pushrods installed properly less useless doesnt matter good RC unit cant trans mit motion control surfaces through sloppy control linkage ie cannot control airplane several pushrod systems available market come sizes shapes Lets first talk about commercially available linkages common ones made nylon tubing eg Nyrods Theyre ny lon tubes another nylon tube inside pushrod very light weight dimensionally stable respect changes temperature nice hot summer day ar rive flying site have plane trimmed 600 F temperature reaches 900 F noon plane doesnt fly like previous flight nylon expandednot much just enough change trim especially longer pushrods installed Sailplane three feet long isnt uncommon Theres new system Laser Rod Du-Bro just coming market claims dimension ally stable 75% less growth shrinkage will still change due temperature fluctua tions also nylon-tubing-with-steelcable system nylon housing steel ca ble better types work better hous ing anchored side fuselage en tire length housing art picking cables kinds steel cable some pushing some pulling pulling versions usu ally flexible might think flexible kind better Wrong Theyre great under ten sion ie pulling can compress means theyre shorter compressed thus creating sloppiness flutter control surfaces best kind cable use kind called 7 x 1 have seven wires wrapped around single center core less flexible center core keeps cable same length being pushed pulled its relatively straight line between servo control horn can replace cable length pi ano wire best way because piano Continued page 169 RC Electrics/Kopski Continued page 43 Electric fliers interests Chokes installed receiver leads speed controls discussed December 89 col umn offering discussed simple low-cost solution stubborn motor noise problems encountered some receivers found last summer putting small radio frequency RF choke three speed control leads connect receiver could make difference between flying being able fly chokes available Ace R/C Inc p/n LL 106 Since column appeared Ive received sev eral reader inputs also found comment an150 Model Aviation other column indicating success method So far no has reported failure readers may having impossible re ceiver motor noise problems may refer once again past issue possible solution difficulties includes full info no guarantees will fix cases its worth shot since total cost less $2 kind enough commentthank Speed control adjustments seem pose prob lems some modelers Id like offer some help speed control Ive seen has least adjustment screw have two Ive seen three special situation adjustments basically used match up operation control transmitters throttle stick operation Adjust ments necessary because pulse width modulation characteristics transmitters vary because would rather difficult and/or costly build speed controls having pre cise operational characteristics no adjust ments Besides adjustments allow personaliza tion control operation Thus adjust ments used bring together almost ra dio almost speed control almost per sonal preferences about things should operate what does mean means very likely given speed control adjustment set up liking radio brand may work same another brand would have readjusted means although may like control tune-up because harmo nizes transmitter control stick opera tion may preferred another flier perhaps its best planes Heres detail Normally speed control should adjusted throttle stick trim fully retarded down position motor completely off Also throttle stick fully forward up motor should fully course stick intermediate position motor should some intermedi ate speed detail al ways best have deadband about two clicks throttle stick stick down motor fully off click two INSOLE S SIGECET SCALE PLANS & 000IIOTVTV1DOA 0 3L0 MODEL PLANS 80 50CC CATALOG fS\ NlEERYS MOUNT S9,V9 I9V,SI009IR, SES S ER V ICE 09000 31VV9V Pj1, S VIEWS I,, SCALEPLA,AN oPoooS,,ce ANS ENLARS NO3209 Mdion AR S e,bR 0 N C 27403 0 0 5 9 SCALE DOCUMENTATION9 9 292 0239 J 4 L EN $1695Propeller Drill Jigs 68 Self aligns exIsting prop hole Wabra Bully a-Dolmar Zenos um II SunCraft 1617 LoaTamasesAlbuq NM 87102 505-842-9646 SPEwic Wing Span Wing Area Engine Size AIRCRAFT BIRCH PLYWOOD Vi/8INCH BALSA WOOD1/8 3/16 STICKS1/8 0 1/4 1/8 0 3/8 1/16-INCH3646 1/8 1/2 1/181/16081/8 3/4 1/183/32073/16-INCH 1/18o1/80811 1/183/1609133/1803/16 1/161/410153/1801/4 1/1613/813173/18 3/8 1/1601/218203/18 1/2 1/1613/421283/18 3/4 3/32-INCH3648 3/32 13/320811 3/3211/80813 3/3213/181015 3/3211/41316 3/32 03/81418 3/321 1/21621 3/32 1 3/42431 Dooble Balsa Wood Prees Spruce Basswood Stied 1/4-INCH 1/4 0 1/4 1/4 0 3/8 1/4 0 1/2 1/4 0 3/4 5/16-INCH 5/16a5/16 5/16o3/8 5/160 1/2 0/18o3/4 36 08 11 13 16 17 25 36 13 14 16 18 28 36 16 18 21 31 36 20 22 27 38 46 3/6-INCH3646 113/803/82737 103/8s 1/23041 173/803/44460 21 1/2-INCH3645 1/20 1/23745 461/2o 3/45270 TRIANGULAR 17 19 CUT BALSA 211/do 1/403624 253/8 o 3/8 o 3625 381/201/203637 3/4 0 3/4 0 3647 4610103661 21BALSAPLANKS 283/403036179 29102036164 42103036230 46104036303 202036230 272s3o36329 302o4o36464 36303038490 523o4o36680 BALSA SHEETS 1-INCH 1/160 1 3/32 0 1 1/8 o 1 3/160 1 1/40 3/8 o 1 1/20 1 2-INCH 1/32 o 2 1/1602 3/32 0 2 1/8 02 3/1602 1/4 02 3/8 o 2 1/2 02 3-INCH 36461/3203 1/1603 27363/32 0 3 3040 1/803 33443/1603 3749 r/4 03 41575/160 3 03723/8 0 3 6588 1/203 36484-INCH 30401/3204 36 481/1604 41 543/320 4 46601/804 54723/1604 63841/404 771033/804 1131501/204 3646 4053 4358 5270 60 80 72 95 84 112 103 134 120 160 1 50 200 36 46 65 67 73 101 82 109 95126 114 151 131 193 182 271 219 325 1/640120 12182 1/64 012024364 1/64012048728 1/84o48o482912 1/3206012 60 1/320 120 12119 1/32012024237 1/32o12o48473 1/16o6o12 59 1/160 120 12117 1/16012024234 1/160 12048468 3/320601281 3/32012012181 3/32 0 12024362 3/32 0 12048723 1/806012100 1/80 120 12198 1/80 12024397 1/8 0 12048794 3/160601274 3/16012012146 3/160 120 24283 1/4 060 12 1/4 0 120 12 1/40 12024 1/4 0 120 48 3/8 0 120 12 3/8 0 12 0 24 3/8 0 12 0 48 1/2 0 12 0 12 1/2 0 12024 1/2 0 12048 74 1 46 2 93 585 1 80 360 730 2 02 405 8 08 LITE PLYWOOD 1/801201261 1/60 12024122 1/80 12048244 TAPERED TRAILING EDGE3646 1/80 1/22230 3/16 03/42940 1/4014255 3/16o12o48585 5/16o1o4461 3/80 5272 * OPEN TO THE PUBLIC * Superior Aircraft Materials 12020-G Centralia iian Gardens California 90716 865-3220 Handling Charge $500 $300 COD mum Order $2000 plus UPS accept Personal checks COD fornia Residents add 6% Sales Tax spare Similarly motor should reach fullon condition click two short maximum stick throw deadhands always assure can get full off full some margin both safety reasons accommodate small drift may occur electronics due temperature effects whatever theres Enter throttle trim knob transmitter What trim knob often matter personal prefer ence prefer set adjustments stick operation described above trim fully down off way know stick fully control over range dont have won der trim set right Also using total stick motion gives feel fin est control over full power range However sometimes also try arrange things stick full down off mo tor operation would just begin trim knob set about midrange way should ever want assure motor never fully off flight can use trim knob set some mini mum low-speed level course does fringe limits stick operation described previously adds some versatility very useful some planes adjustment versatility just mentioned difficult often impossible achieve single-adjustment speed controls because simply cant control two independent param eters single variable Controls two trim screws use determine con trol just begins operate other adjustment used establish upper range limit Some manufacturers describe adjustments differently using labels neutral range general effect same Also its typically case adjustments interact Thus might adjust full off full find latter af fected former may work other way around too can indeed very confusing frustrating often made inadequate instructions conditions lead lengthy adjustment sessions during time running motor draining battery quickly may threat safety Well life can made easier Two photos month show use simple accessory cord configured shown help set up controls cord has connectors end plug speed control output instead connecting motor case its done Sermos connectors Anyway eliminates major annoyancethe running motor other end cord has connectors plug meter nearly always ba nana plugs Finally cord has built-in load e substitute motor control can supply power something use 100-ohm 10-watt resistor wired across two cord conduc tors shown resistor Radio Shack part number 271-132 relatively light load meaning does take much current battery drain nowhere near what could motor connected gives much time work control adjustments before battery runs down means youre under pressure time should able better job speed control tune-up having worry about taking too long doing Since variety controls mar ket its describe associated tos Besides dont have em Therefore recommend charge motor battery install accessory cord described set about follow instructions control Instead using motor speed tach ear guide adjustments simply watch volt meter digital meter shown an alog classic moving-needle type can also used although affords lower resolution youll have watch needle closely Keep mind operational description above prepared go back forth between adjust ment screws control has two case single variable set up best compro mise stick range can achieve Ive never seen case can damage anything playing adjustments can turn screws assurance Also Ive no ticed some screw adjustments very sensi tive make small turns screwdriver cases Take notes have can know what screw does what direc tion future reference give expensive control some respect use right tool prop erly sized fitting screwdriver can make adjustment effort much easier abuse trim screws same time get adjustments liking accessory cord can reconnect motor verify results real Heres hoping find information useful helpful Puget Sound Electric Model Fliers display booth Capital Mall Show Olym pia WA spring Ben Almojuela man aged booth wrote tell well Electric display received along sev eral other displays show tells folks didnt know its possi ble fly electric power large amount total interest came Gas crowd Furthermore Electric guys able two things wet power people couldnt like run motors booth fly park ing lot before opening hours beyond PSEMF building Phasoar booth dur ing show just show easy Talk about getting attention Have ever noticed often thats necessary heard speak softly Nice work Benand PSEMF should thats needed say other Electric Continued page 154 August 1990 151 Ultimate FOAM CUTTING WIRE Out performs music wire end nichrome Pkg Send $400 plus $225 shipping handl/ng Worden WoodworksDealer Inquiries 14935 Marie Werren MI 48093Invited 313-294-0890 Rubber ne Power Free Flight Display Control Line Electole Power RIC Airplanes new illustrated 32 pegs tabloid size catalog U5 da $100 Foreigh *300 Penn Valley Hobby Center 837-A W Main St Lansdala PA 19448 215- 388-0770 LATHES FOR THE AVIATION MODELER F ]3LUEAIDGE UNIMATS 20/ MACCICERO CR5 5 soCOMPACTSI ISfIERUNEI IPO sox v UNIMAT 51 HuRRICANE WV 25526 UNIMAT PC 1562-3838 ICATALOG $100 Plus toll iree nuryter orders & questIons PRECISION MODEL PRODUCTS rzzzjz Made USA BARSTOCK ALUMINUM SPINNERS Part NoSize 11-150-B .. 1-1/2 11-175-B ..1-3/4 11-200-B 11-225-B 4 11-226-B .. 2-114 FAt . 11-250-B .. 2-1/2 11-251-B .. 2-1I2FAI 75-B .. 2-3/4 11-276-B 3/4 FAt 00-B 11-301-BFAt 11-325-B 14 11-350-B '3-112 11-375-B /4 11-400-B4 RetailApprox PriceWeight S1395056 oz 1495095 02 1595100 02 1695160 02 1895150ox 1695190ox 2095170oz 229522002 249520002 269526002 289525002 3695340ox 499547002 5995520ox 699557002 3 Pieces Cone Back Plate Retainer Screw Note 3 4 Blade Spinners Available Sizes Add $300 Per Spinner Part NoSize 11-140-A -26 T1-147-A '114-2817mm . 11-610-A . 6x 10mm TT-710-A 10mm TT-516-A 5/16-24 16-A 5/16-24/8mm 11-810-A . 8 x 10mm 11-625-A . 8 x 125mm 11-375-A 3/824 11-125-A 125mm RetailApprox PriceWeight $495061 02 49506102 49506302 49568202 495. 076 02 495. 076 02 495 .076 02 495075 02 595117 02 59511502 3 Pieces Nut Washer Machined Bushing Add $350 Shipping Handling Prices subject change notice ROMCO MFG INC OX 836 SOUTH HOUSTON TEXAS 77587 713 943-1867 RC Electrics/Kopski Continued page 151 ctubs around country Go Electric references often requested read ers Im listing some Id like com ment Ive yet seen myself probably will time goes along no particular order Choose RC Model Engines Mo torbooks International has extensive electric motor section Advanced Guide RC Sport Flying TAB books has chapter Electrics Beginners Guide Electric RC Flying Im sure publisher written Doug Pratt also gentleman runs ModelNetAMAs CompuServe forum may have realized column some others transmit ted Model Aviation via CompuServe upload monthly text using computer use write modem sends infor mation digitally over phone lines can think CompuServe sort holding tank information send usually next day Doug downloads AMA modem right AMAs computer Presto Great stuff just like Electric back references turns out ambitious Doug also has segments dealing Electric several RC Video Magazine tapes dont have complete list Im sure check folks can find Out Building Flying Electric-Powered Model Aircraft Mitch Poling Model Builders Elec tric columnist Its published Kalmbach Electric Flight Dave Day published Ar gus Books Introduction Electric Flight written Ian Peacock dont know publisher Quiet Revolution Bob Boucher As tro granddaddy Electric books believe oldest above Incidentally publications tapes available Zenith Books P0 Box 1 Osceola WI 54020 Send catalog possible course Ive missed some Id appreciate input Ill list ad ditions ftiture columns Finally monthly Electric columns several magazines besides MA include no special order RCM Flying Models RC Re port Model Builder Model Airplane News latter quiet column including just Electric might say interesting fact about authors columns friendly among ourselves Now never knew worthy note until recently pointed out some readers perceive us ri vals Rivals Nope No way As far Im concerned thats just case may other Electric areas authors dont feel myself dont see coming way dont sense among other Elec tric columnists thing know some other colum nists personally both respect con sider friends fact us have flown together Weve shared certain col umns beforehand upon occasion some us have never met routinely communicate letter sometimes phone No other author has need view rival far Im concerned does mean see everything exactly same way time variance opinion preference Thats good area endeavor ever got unpleasant manner implied rivalry Id back away hobby happy has way what another column closes Please ad dress comment query author given column header will respond mail accompanied SASE Happy Hununmmmimg Landings Everyone RC Scale/Parsons Continued page 45 arced over impacted ground simultaneous ly Spectacular end reports RC history made following weekend big bird fly-in BB Webers Bomber Field 13 B-17s parked pit area No didnt get air together grand flyby Saturday afternoon tied down nose-to-tail taxiway 52 count em engines runningquite sight sound Bomber Field BB Webers own private RC field really something Its 650 x 60ft blacktop runway surrounded grass has ample overruns huge pavil ion expansive workbenches 40-ft-high air-conditioned control tower Ah Texans BB loves B-17s having four five 10-footers exactly noon Sunday 130 pilots spectators treated piece de resistance fly-in CAFs B-17 Tex Raiders appeared distance pro ceeded make several close-in one-wing-low flybys magnificent sight extra treat photographers video camerapersons present took in-flight pictures both CAFs Tom Streets Texas Raiders similar flight titudes cannot tell apart Scale RCers have come long way Word has two outstanding Big Bird fly-ins will again play same back-to-back weekends October year Watch big change pace location lets go 154 Model Aviation PROP NUT ADAPTORS V THE GUARDIAN ANGEL TM CRASH PREVENTION SYSTEM 1 Tests monitors R/C electronics CALL 18007299210 FREE information ThIE j Antiques Military Civiliar Helicopters Sajiptanes 2700 plus" -cow *awings color FOTO-PAKSrig KO4CUFAN 01 L4TNES MILLS METIILS BOOKS ourPRECISIIN INSTRUMENTS COMPLETE TITILOC $200 1OOOs items cRihff2C4MPIELLODU Ce ~'Sprgf1d OH 5505 M513 3028562
Edition: Model Aviation - 1990/08
Page Numbers: 42, 43, 150, 151, 154
AMAZING Electric Connection Service worthy superlative because column feature initiated January 90 column has brought continuous reader participa tion anything else ever has beforeuntil month Until now issue has someone list whos seeking connect other local Electric modelers fact going back two issues lots folks doing monthnone can Whatever reason ECS remains available use youd like find others Electric persuasion close just let know writing Ill list info service available individuals clubs Electric meets Late word just has will three unofficial Electric events years Nats Planned events include FAI Class F3E Seven-Cell Class Sailplane AMA event No 610 Class B Sailplane AMA event No 612 know edge last minute maybe will use some folks information contact Mark Nankivil 5206A Devonshire St Louis MO 63109 tel 1-314/ 832-0634 late word years Midwest Electric Flys set July 21 22 backto-back meets hosted two different clubs have two different CDs Saturday meet sponsored Electric Fliers Only CD very capable Ken Myers Ken can reached 1-313/669-9567 Sunday meet sponsored Ann Arbor Falcons CD well-known re spected Keith Shaw Keiths number 1-313/9736309 Both meets will held Falcons field Saline MI both meets put emphasis fun Events willI include popular All-Up/LastDown Dial phone numbers given previously get details August 5 date set Midwest RC So ciety Electric Fun Fly meet offers AlI-Up/ speed control adjustment accesory cord described column left Lampcord wire Sermos connectors end banana plugs other 100-ohm 10-watt resistor soldered across two wires right cord use Kopskis Senior Skyvolt sets up its Horak speed control Cord plugs speed control replaces normal motor power leads DVM shows speed control operation spinning prop worry about Small screwdriver chosen properly fit N 5 adjustment controls Horak 42 Model Aviation Radio Control Electrics Bob Kopski 25 West End Dr Lansdaie PA p446 THIS MONTHS TOPICS 1 Electric Connec tion Service 2 Electric meetsThe Nats Michi gan Michigan New York 3 Reader reactionspeed control diodes 4 Reader reactionspeed control chokes 5 Speed control adjustments 6 mall show 7 Electric referenc es n writings Randyl Britten white jacket answers shoppers questions about Electrics display PSEMFs mall show Olympia WA Twin-engine Boeing 247 foreground belongs Ben Almojuela planes display photo Club made lots friends WW i steaith bomber Nol An Amptique derivative James Jager Parchment Ml Leisure 05 motor has 251 reduction drive turns 9-in props 7 800-mAh NI-Cd cells Wing span shortened 51 Hailco aluminum landing gear substituted kit original KRC filers go first class pilot station club field comforts homeexcept backyard much bigger Guess car sports Electrifying message first state like wise Bob Kopaki did Pennsylvania Last-Down Best Scale Best Aerobatic Most Im pressive Pilots Choice events CD Jeff Hauser 18036 Winchester Dr Northville MI 48167 tel 1-313/348-5253 Voltaires New York have scheduled meet August 19 will held Mo hawk Valley RC Club field fun fly events scheduled include All-Up/Last-Down Most Rolls Most Loops Spot Landing Charge Touch n Go last sounds like lot funand can use plane Hummmm Ill have talk authorities KRC about info contact Bill Griggs CD PO Box 493 Westmoreland NY 13490 tel 1-315/859-0855 John Fleming tel 1-315/622-3178 Jim McMaster tel 1315/676-4870 way John gentleman walked away lots $$ 89 KRC meet having taken AU/LD Maxi-Flight events used stock Electra jaimned SR battery packs See column January 90 issue watch out killer John May 90 issue hardly hit streets reader input began flow regarding dis cussion diodes used speed controls column discussed importance properly selecting diodes especially used highrate controls person started reader Steve Hageman suggested high-rate controls must use diodes rated maximum motor current Reader input since including dustry has argued may quite case reader sent several letters analyses argue case much less maximum motor current rating diodes So what really case dunno number varying opinions lack time pursue details myself Im just waiting see what settles out meantime interested invited write subject Thanks input folks Its sort thing lets know youre out thereand interested consider con tent columns average period time youll see am trying offer things Continued page 150 Kraft Midwest Inc 115 E Main Northville Ml 48167 313 348-0085 FAX 313 348-417 Ultra Narrow Band AM Receiver Model KMRDC4-7A Years developing worth wait Special Agreement RCD Rxs SO & 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 Ruff Stuff$115 per sheetMini Glue ripsMd 20% otaI order shipping 4for $105 Tee Tray Lots Good Stuff Bar $210 gn Corporation $300 LLJ./ PO Box 3384 Torrance CA 90610 / $275 models fill need hotdog show-off sport plane Knife edge take-offs flat spins snaps will anything can Foam wing fuselage tail lite ply balsa builds quick lands like trainer Flying weight 84 -10 lbs 92 13 lbs Ohio 0SUPERSTAR PRODUCTS INC 76RIDGEWAY ROADKENSINGTON OHIO 44427 2162231950 August 1990 43 Features Dual conversion Dual AGC Dual Crystal Ceramic Filters 50 53 72 75 Mhz ectors Krafl styles Deans World & specials List Prices Special Warp 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-$10 Mini Sander F SPORTOBATIC 79~ 18995 84 1 20 4cycle 90 2-cycle T 2000 2500 3000 18 NEW 05 BGX13500 Mere Fun 62Y2 inches 770 square inches 10cc 90 120 four stroke Designed AMA FAI Turn-around pattern Foam wing stab 3-32 Balsa sheet covering Tricycle conven tional gear fixed retracts Rear side exhaust fiber glass canopy Very positive maneuverable XLT SPECIFIC Wing Span65 inches Length65 inches Wing Area845 square inches Recommended Engine Size 10 cc 90 120 four stroke XLT designed tuned pipe re tract landing gears Capable AMA Turn-around pattern Rear side ex haust SPECIFICATIONS Wing Span Wing Area Engine Size 63Y4 inches 700 square inches 50-60 Glow 90 four stroke fun sport pattern orturn-around can done Utter Chaos completely built up Balsa construction Canopy engine mount included years proven flying reliablity BRIDI AIRCRAFT DESIGNS INC 23625 Pineforest Lane Harbor City California 90710 213 549-8264 326-5013 SEE YOUR FAVORITE HOBBY SHOP OR RETAIL OUTLETW Dealer Inqurles Invited made members club its reg ular contributors Sailpianer extraordinaire Brian Chan La-Tech Stuff column gives helpful hints insights various areas modeling latest edition discusses some characteristics pushrods servos Pushrods function transmit control motion servos control sur faces play very important role control ling airplane pushrods installed properly less useless doesnt matter good RC unit cant trans mit motion control surfaces through sloppy control linkage ie cannot control airplane several pushrod systems available market come sizes shapes Lets first talk about commercially available linkages common ones made nylon tubing eg Nyrods Theyre ny lon tubes another nylon tube inside pushrod very light weight dimensionally stable respect changes temperature nice hot summer day ar rive flying site have plane trimmed 600 F temperature reaches 900 F noon plane doesnt fly like previous flight nylon expandednot much just enough change trim especially longer pushrods installed Sailplane three feet long isnt uncommon Theres new system Laser Rod Du-Bro just coming market claims dimension ally stable 75% less growth shrinkage will still change due temperature fluctua tions also nylon-tubing-with-steelcable system nylon housing steel ca ble better types work better hous ing anchored side fuselage en tire length housing art picking cables kinds steel cable some pushing some pulling pulling versions usu ally flexible might think flexible kind better Wrong Theyre great under ten sion ie pulling can compress means theyre shorter compressed thus creating sloppiness flutter control surfaces best kind cable use kind called 7 x 1 have seven wires wrapped around single center core less flexible center core keeps cable same length being pushed pulled its relatively straight line between servo control horn can replace cable length pi ano wire best way because piano Continued page 169 RC Electrics/Kopski Continued page 43 Electric fliers interests Chokes installed receiver leads speed controls discussed December 89 col umn offering discussed simple low-cost solution stubborn motor noise problems encountered some receivers found last summer putting small radio frequency RF choke three speed control leads connect receiver could make difference between flying being able fly chokes available Ace R/C Inc p/n LL 106 Since column appeared Ive received sev eral reader inputs also found comment an150 Model Aviation other column indicating success method So far no has reported failure readers may having impossible re ceiver motor noise problems may refer once again past issue possible solution difficulties includes full info no guarantees will fix cases its worth shot since total cost less $2 kind enough commentthank Speed control adjustments seem pose prob lems some modelers Id like offer some help speed control Ive seen has least adjustment screw have two Ive seen three special situation adjustments basically used match up operation control transmitters throttle stick operation Adjust ments necessary because pulse width modulation characteristics transmitters vary because would rather difficult and/or costly build speed controls having pre cise operational characteristics no adjust ments Besides adjustments allow personaliza tion control operation Thus adjust ments used bring together almost ra dio almost speed control almost per sonal preferences about things should operate what does mean means very likely given speed control adjustment set up liking radio brand may work same another brand would have readjusted means although may like control tune-up because harmo nizes transmitter control stick opera tion may preferred another flier perhaps its best planes Heres detail Normally speed control should adjusted throttle stick trim fully retarded down position motor completely off Also throttle stick fully forward up motor should fully course stick intermediate position motor should some intermedi ate speed detail al ways best have deadband about two clicks throttle stick stick down motor fully off click two INSOLE S SIGECET SCALE PLANS & 000IIOTVTV1DOA 0 3L0 MODEL PLANS 80 50CC CATALOG fS\ NlEERYS MOUNT S9,V9 I9V,SI009IR, SES S ER V ICE 09000 31VV9V Pj1, S VIEWS I,, SCALEPLA,AN oPoooS,,ce ANS ENLARS NO3209 Mdion AR S e,bR 0 N C 27403 0 0 5 9 SCALE DOCUMENTATION9 9 292 0239 J 4 L EN $1695Propeller Drill Jigs 68 Self aligns exIsting prop hole Wabra Bully a-Dolmar Zenos um II SunCraft 1617 LoaTamasesAlbuq NM 87102 505-842-9646 SPEwic Wing Span Wing Area Engine Size AIRCRAFT BIRCH PLYWOOD Vi/8INCH BALSA WOOD1/8 3/16 STICKS1/8 0 1/4 1/8 0 3/8 1/16-INCH3646 1/8 1/2 1/181/16081/8 3/4 1/183/32073/16-INCH 1/18o1/80811 1/183/1609133/1803/16 1/161/410153/1801/4 1/1613/813173/18 3/8 1/1601/218203/18 1/2 1/1613/421283/18 3/4 3/32-INCH3648 3/32 13/320811 3/3211/80813 3/3213/181015 3/3211/41316 3/32 03/81418 3/321 1/21621 3/32 1 3/42431 Dooble Balsa Wood Prees Spruce Basswood Stied 1/4-INCH 1/4 0 1/4 1/4 0 3/8 1/4 0 1/2 1/4 0 3/4 5/16-INCH 5/16a5/16 5/16o3/8 5/160 1/2 0/18o3/4 36 08 11 13 16 17 25 36 13 14 16 18 28 36 16 18 21 31 36 20 22 27 38 46 3/6-INCH3646 113/803/82737 103/8s 1/23041 173/803/44460 21 1/2-INCH3645 1/20 1/23745 461/2o 3/45270 TRIANGULAR 17 19 CUT BALSA 211/do 1/403624 253/8 o 3/8 o 3625 381/201/203637 3/4 0 3/4 0 3647 4610103661 21BALSAPLANKS 283/403036179 29102036164 42103036230 46104036303 202036230 272s3o36329 302o4o36464 36303038490 523o4o36680 BALSA SHEETS 1-INCH 1/160 1 3/32 0 1 1/8 o 1 3/160 1 1/40 3/8 o 1 1/20 1 2-INCH 1/32 o 2 1/1602 3/32 0 2 1/8 02 3/1602 1/4 02 3/8 o 2 1/2 02 3-INCH 36461/3203 1/1603 27363/32 0 3 3040 1/803 33443/1603 3749 r/4 03 41575/160 3 03723/8 0 3 6588 1/203 36484-INCH 30401/3204 36 481/1604 41 543/320 4 46601/804 54723/1604 63841/404 771033/804 1131501/204 3646 4053 4358 5270 60 80 72 95 84 112 103 134 120 160 1 50 200 36 46 65 67 73 101 82 109 95126 114 151 131 193 182 271 219 325 1/640120 12182 1/64 012024364 1/64012048728 1/84o48o482912 1/3206012 60 1/320 120 12119 1/32012024237 1/32o12o48473 1/16o6o12 59 1/160 120 12117 1/16012024234 1/160 12048468 3/320601281 3/32012012181 3/32 0 12024362 3/32 0 12048723 1/806012100 1/80 120 12198 1/80 12024397 1/8 0 12048794 3/160601274 3/16012012146 3/160 120 24283 1/4 060 12 1/4 0 120 12 1/40 12024 1/4 0 120 48 3/8 0 120 12 3/8 0 12 0 24 3/8 0 12 0 48 1/2 0 12 0 12 1/2 0 12024 1/2 0 12048 74 1 46 2 93 585 1 80 360 730 2 02 405 8 08 LITE PLYWOOD 1/801201261 1/60 12024122 1/80 12048244 TAPERED TRAILING EDGE3646 1/80 1/22230 3/16 03/42940 1/4014255 3/16o12o48585 5/16o1o4461 3/80 5272 * OPEN TO THE PUBLIC * Superior Aircraft Materials 12020-G Centralia iian Gardens California 90716 865-3220 Handling Charge $500 $300 COD mum Order $2000 plus UPS accept Personal checks COD fornia Residents add 6% Sales Tax spare Similarly motor should reach fullon condition click two short maximum stick throw deadhands always assure can get full off full some margin both safety reasons accommodate small drift may occur electronics due temperature effects whatever theres Enter throttle trim knob transmitter What trim knob often matter personal prefer ence prefer set adjustments stick operation described above trim fully down off way know stick fully control over range dont have won der trim set right Also using total stick motion gives feel fin est control over full power range However sometimes also try arrange things stick full down off mo tor operation would just begin trim knob set about midrange way should ever want assure motor never fully off flight can use trim knob set some mini mum low-speed level course does fringe limits stick operation described previously adds some versatility very useful some planes adjustment versatility just mentioned difficult often impossible achieve single-adjustment speed controls because simply cant control two independent param eters single variable Controls two trim screws use determine con trol just begins operate other adjustment used establish upper range limit Some manufacturers describe adjustments differently using labels neutral range general effect same Also its typically case adjustments interact Thus might adjust full off full find latter af fected former may work other way around too can indeed very confusing frustrating often made inadequate instructions conditions lead lengthy adjustment sessions during time running motor draining battery quickly may threat safety Well life can made easier Two photos month show use simple accessory cord configured shown help set up controls cord has connectors end plug speed control output instead connecting motor case its done Sermos connectors Anyway eliminates major annoyancethe running motor other end cord has connectors plug meter nearly always ba nana plugs Finally cord has built-in load e substitute motor control can supply power something use 100-ohm 10-watt resistor wired across two cord conduc tors shown resistor Radio Shack part number 271-132 relatively light load meaning does take much current battery drain nowhere near what could motor connected gives much time work control adjustments before battery runs down means youre under pressure time should able better job speed control tune-up having worry about taking too long doing Since variety controls mar ket its describe associated tos Besides dont have em Therefore recommend charge motor battery install accessory cord described set about follow instructions control Instead using motor speed tach ear guide adjustments simply watch volt meter digital meter shown an alog classic moving-needle type can also used although affords lower resolution youll have watch needle closely Keep mind operational description above prepared go back forth between adjust ment screws control has two case single variable set up best compro mise stick range can achieve Ive never seen case can damage anything playing adjustments can turn screws assurance Also Ive no ticed some screw adjustments very sensi tive make small turns screwdriver cases Take notes have can know what screw does what direc tion future reference give expensive control some respect use right tool prop erly sized fitting screwdriver can make adjustment effort much easier abuse trim screws same time get adjustments liking accessory cord can reconnect motor verify results real Heres hoping find information useful helpful Puget Sound Electric Model Fliers display booth Capital Mall Show Olym pia WA spring Ben Almojuela man aged booth wrote tell well Electric display received along sev eral other displays show tells folks didnt know its possi ble fly electric power large amount total interest came Gas crowd Furthermore Electric guys able two things wet power people couldnt like run motors booth fly park ing lot before opening hours beyond PSEMF building Phasoar booth dur ing show just show easy Talk about getting attention Have ever noticed often thats necessary heard speak softly Nice work Benand PSEMF should thats needed say other Electric Continued page 154 August 1990 151 Ultimate FOAM CUTTING WIRE Out performs music wire end nichrome Pkg Send $400 plus $225 shipping handl/ng Worden WoodworksDealer Inquiries 14935 Marie Werren MI 48093Invited 313-294-0890 Rubber ne Power Free Flight Display Control Line Electole Power RIC Airplanes new illustrated 32 pegs tabloid size catalog U5 da $100 Foreigh *300 Penn Valley Hobby Center 837-A W Main St Lansdala PA 19448 215- 388-0770 LATHES FOR THE AVIATION MODELER F ]3LUEAIDGE UNIMATS 20/ MACCICERO CR5 5 soCOMPACTSI ISfIERUNEI IPO sox v UNIMAT 51 HuRRICANE WV 25526 UNIMAT PC 1562-3838 ICATALOG $100 Plus toll iree nuryter orders & questIons PRECISION MODEL PRODUCTS rzzzjz Made USA BARSTOCK ALUMINUM SPINNERS Part NoSize 11-150-B .. 1-1/2 11-175-B ..1-3/4 11-200-B 11-225-B 4 11-226-B .. 2-114 FAt . 11-250-B .. 2-1/2 11-251-B .. 2-1I2FAI 75-B .. 2-3/4 11-276-B 3/4 FAt 00-B 11-301-BFAt 11-325-B 14 11-350-B '3-112 11-375-B /4 11-400-B4 RetailApprox PriceWeight S1395056 oz 1495095 02 1595100 02 1695160 02 1895150ox 1695190ox 2095170oz 229522002 249520002 269526002 289525002 3695340ox 499547002 5995520ox 699557002 3 Pieces Cone Back Plate Retainer Screw Note 3 4 Blade Spinners Available Sizes Add $300 Per Spinner Part NoSize 11-140-A -26 T1-147-A '114-2817mm . 11-610-A . 6x 10mm TT-710-A 10mm TT-516-A 5/16-24 16-A 5/16-24/8mm 11-810-A . 8 x 10mm 11-625-A . 8 x 125mm 11-375-A 3/824 11-125-A 125mm RetailApprox PriceWeight $495061 02 49506102 49506302 49568202 495. 076 02 495. 076 02 495 .076 02 495075 02 595117 02 59511502 3 Pieces Nut Washer Machined Bushing Add $350 Shipping Handling Prices subject change notice ROMCO MFG INC OX 836 SOUTH HOUSTON TEXAS 77587 713 943-1867 RC Electrics/Kopski Continued page 151 ctubs around country Go Electric references often requested read ers Im listing some Id like com ment Ive yet seen myself probably will time goes along no particular order Choose RC Model Engines Mo torbooks International has extensive electric motor section Advanced Guide RC Sport Flying TAB books has chapter Electrics Beginners Guide Electric RC Flying Im sure publisher written Doug Pratt also gentleman runs ModelNetAMAs CompuServe forum may have realized column some others transmit ted Model Aviation via CompuServe upload monthly text using computer use write modem sends infor mation digitally over phone lines can think CompuServe sort holding tank information send usually next day Doug downloads AMA modem right AMAs computer Presto Great stuff just like Electric back references turns out ambitious Doug also has segments dealing Electric several RC Video Magazine tapes dont have complete list Im sure check folks can find Out Building Flying Electric-Powered Model Aircraft Mitch Poling Model Builders Elec tric columnist Its published Kalmbach Electric Flight Dave Day published Ar gus Books Introduction Electric Flight written Ian Peacock dont know publisher Quiet Revolution Bob Boucher As tro granddaddy Electric books believe oldest above Incidentally publications tapes available Zenith Books P0 Box 1 Osceola WI 54020 Send catalog possible course Ive missed some Id appreciate input Ill list ad ditions ftiture columns Finally monthly Electric columns several magazines besides MA include no special order RCM Flying Models RC Re port Model Builder Model Airplane News latter quiet column including just Electric might say interesting fact about authors columns friendly among ourselves Now never knew worthy note until recently pointed out some readers perceive us ri vals Rivals Nope No way As far Im concerned thats just case may other Electric areas authors dont feel myself dont see coming way dont sense among other Elec tric columnists thing know some other colum nists personally both respect con sider friends fact us have flown together Weve shared certain col umns beforehand upon occasion some us have never met routinely communicate letter sometimes phone No other author has need view rival far Im concerned does mean see everything exactly same way time variance opinion preference Thats good area endeavor ever got unpleasant manner implied rivalry Id back away hobby happy has way what another column closes Please ad dress comment query author given column header will respond mail accompanied SASE Happy Hununmmmimg Landings Everyone RC Scale/Parsons Continued page 45 arced over impacted ground simultaneous ly Spectacular end reports RC history made following weekend big bird fly-in BB Webers Bomber Field 13 B-17s parked pit area No didnt get air together grand flyby Saturday afternoon tied down nose-to-tail taxiway 52 count em engines runningquite sight sound Bomber Field BB Webers own private RC field really something Its 650 x 60ft blacktop runway surrounded grass has ample overruns huge pavil ion expansive workbenches 40-ft-high air-conditioned control tower Ah Texans BB loves B-17s having four five 10-footers exactly noon Sunday 130 pilots spectators treated piece de resistance fly-in CAFs B-17 Tex Raiders appeared distance pro ceeded make several close-in one-wing-low flybys magnificent sight extra treat photographers video camerapersons present took in-flight pictures both CAFs Tom Streets Texas Raiders similar flight titudes cannot tell apart Scale RCers have come long way Word has two outstanding Big Bird fly-ins will again play same back-to-back weekends October year Watch big change pace location lets go 154 Model Aviation PROP NUT ADAPTORS V THE GUARDIAN ANGEL TM CRASH PREVENTION SYSTEM 1 Tests monitors R/C electronics CALL 18007299210 FREE information ThIE j Antiques Military Civiliar Helicopters Sajiptanes 2700 plus" -cow *awings color FOTO-PAKSrig KO4CUFAN 01 L4TNES MILLS METIILS BOOKS ourPRECISIIN INSTRUMENTS COMPLETE TITILOC $200 1OOOs items cRihff2C4MPIELLODU Ce ~'Sprgf1d OH 5505 M513 3028562
Edition: Model Aviation - 1990/08
Page Numbers: 42, 43, 150, 151, 154
AMAZING Electric Connection Service worthy superlative because column feature initiated January 90 column has brought continuous reader participa tion anything else ever has beforeuntil month Until now issue has someone list whos seeking connect other local Electric modelers fact going back two issues lots folks doing monthnone can Whatever reason ECS remains available use youd like find others Electric persuasion close just let know writing Ill list info service available individuals clubs Electric meets Late word just has will three unofficial Electric events years Nats Planned events include FAI Class F3E Seven-Cell Class Sailplane AMA event No 610 Class B Sailplane AMA event No 612 know edge last minute maybe will use some folks information contact Mark Nankivil 5206A Devonshire St Louis MO 63109 tel 1-314/ 832-0634 late word years Midwest Electric Flys set July 21 22 backto-back meets hosted two different clubs have two different CDs Saturday meet sponsored Electric Fliers Only CD very capable Ken Myers Ken can reached 1-313/669-9567 Sunday meet sponsored Ann Arbor Falcons CD well-known re spected Keith Shaw Keiths number 1-313/9736309 Both meets will held Falcons field Saline MI both meets put emphasis fun Events willI include popular All-Up/LastDown Dial phone numbers given previously get details August 5 date set Midwest RC So ciety Electric Fun Fly meet offers AlI-Up/ speed control adjustment accesory cord described column left Lampcord wire Sermos connectors end banana plugs other 100-ohm 10-watt resistor soldered across two wires right cord use Kopskis Senior Skyvolt sets up its Horak speed control Cord plugs speed control replaces normal motor power leads DVM shows speed control operation spinning prop worry about Small screwdriver chosen properly fit N 5 adjustment controls Horak 42 Model Aviation Radio Control Electrics Bob Kopski 25 West End Dr Lansdaie PA p446 THIS MONTHS TOPICS 1 Electric Connec tion Service 2 Electric meetsThe Nats Michi gan Michigan New York 3 Reader reactionspeed control diodes 4 Reader reactionspeed control chokes 5 Speed control adjustments 6 mall show 7 Electric referenc es n writings Randyl Britten white jacket answers shoppers questions about Electrics display PSEMFs mall show Olympia WA Twin-engine Boeing 247 foreground belongs Ben Almojuela planes display photo Club made lots friends WW i steaith bomber Nol An Amptique derivative James Jager Parchment Ml Leisure 05 motor has 251 reduction drive turns 9-in props 7 800-mAh NI-Cd cells Wing span shortened 51 Hailco aluminum landing gear substituted kit original KRC filers go first class pilot station club field comforts homeexcept backyard much bigger Guess car sports Electrifying message first state like wise Bob Kopaki did Pennsylvania Last-Down Best Scale Best Aerobatic Most Im pressive Pilots Choice events CD Jeff Hauser 18036 Winchester Dr Northville MI 48167 tel 1-313/348-5253 Voltaires New York have scheduled meet August 19 will held Mo hawk Valley RC Club field fun fly events scheduled include All-Up/Last-Down Most Rolls Most Loops Spot Landing Charge Touch n Go last sounds like lot funand can use plane Hummmm Ill have talk authorities KRC about info contact Bill Griggs CD PO Box 493 Westmoreland NY 13490 tel 1-315/859-0855 John Fleming tel 1-315/622-3178 Jim McMaster tel 1315/676-4870 way John gentleman walked away lots $$ 89 KRC meet having taken AU/LD Maxi-Flight events used stock Electra jaimned SR battery packs See column January 90 issue watch out killer John May 90 issue hardly hit streets reader input began flow regarding dis cussion diodes used speed controls column discussed importance properly selecting diodes especially used highrate controls person started reader Steve Hageman suggested high-rate controls must use diodes rated maximum motor current Reader input since including dustry has argued may quite case reader sent several letters analyses argue case much less maximum motor current rating diodes So what really case dunno number varying opinions lack time pursue details myself Im just waiting see what settles out meantime interested invited write subject Thanks input folks Its sort thing lets know youre out thereand interested consider con tent columns average period time youll see am trying offer things Continued page 150 Kraft Midwest Inc 115 E Main Northville Ml 48167 313 348-0085 FAX 313 348-417 Ultra Narrow Band AM Receiver Model KMRDC4-7A Years developing worth wait Special Agreement RCD Rxs SO & 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 Ruff Stuff$115 per sheetMini Glue ripsMd 20% otaI order shipping 4for $105 Tee Tray Lots Good Stuff Bar $210 gn Corporation $300 LLJ./ PO Box 3384 Torrance CA 90610 / $275 models fill need hotdog show-off sport plane Knife edge take-offs flat spins snaps will anything can Foam wing fuselage tail lite ply balsa builds quick lands like trainer Flying weight 84 -10 lbs 92 13 lbs Ohio 0SUPERSTAR PRODUCTS INC 76RIDGEWAY ROADKENSINGTON OHIO 44427 2162231950 August 1990 43 Features Dual conversion Dual AGC Dual Crystal Ceramic Filters 50 53 72 75 Mhz ectors Krafl styles Deans World & specials List Prices Special Warp 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-$10 Mini Sander F SPORTOBATIC 79~ 18995 84 1 20 4cycle 90 2-cycle T 2000 2500 3000 18 NEW 05 BGX13500 Mere Fun 62Y2 inches 770 square inches 10cc 90 120 four stroke Designed AMA FAI Turn-around pattern Foam wing stab 3-32 Balsa sheet covering Tricycle conven tional gear fixed retracts Rear side exhaust fiber glass canopy Very positive maneuverable XLT SPECIFIC Wing Span65 inches Length65 inches Wing Area845 square inches Recommended Engine Size 10 cc 90 120 four stroke XLT designed tuned pipe re tract landing gears Capable AMA Turn-around pattern Rear side ex haust SPECIFICATIONS Wing Span Wing Area Engine Size 63Y4 inches 700 square inches 50-60 Glow 90 four stroke fun sport pattern orturn-around can done Utter Chaos completely built up Balsa construction Canopy engine mount included years proven flying reliablity BRIDI AIRCRAFT DESIGNS INC 23625 Pineforest Lane Harbor City California 90710 213 549-8264 326-5013 SEE YOUR FAVORITE HOBBY SHOP OR RETAIL OUTLETW Dealer Inqurles Invited made members club its reg ular contributors Sailpianer extraordinaire Brian Chan La-Tech Stuff column gives helpful hints insights various areas modeling latest edition discusses some characteristics pushrods servos Pushrods function transmit control motion servos control sur faces play very important role control ling airplane pushrods installed properly less useless doesnt matter good RC unit cant trans mit motion control surfaces through sloppy control linkage ie cannot control airplane several pushrod systems available market come sizes shapes Lets first talk about commercially available linkages common ones made nylon tubing eg Nyrods Theyre ny lon tubes another nylon tube inside pushrod very light weight dimensionally stable respect changes temperature nice hot summer day ar rive flying site have plane trimmed 600 F temperature reaches 900 F noon plane doesnt fly like previous flight nylon expandednot much just enough change trim especially longer pushrods installed Sailplane three feet long isnt uncommon Theres new system Laser Rod Du-Bro just coming market claims dimension ally stable 75% less growth shrinkage will still change due temperature fluctua tions also nylon-tubing-with-steelcable system nylon housing steel ca ble better types work better hous ing anchored side fuselage en tire length housing art picking cables kinds steel cable some pushing some pulling pulling versions usu ally flexible might think flexible kind better Wrong Theyre great under ten sion ie pulling can compress means theyre shorter compressed thus creating sloppiness flutter control surfaces best kind cable use kind called 7 x 1 have seven wires wrapped around single center core less flexible center core keeps cable same length being pushed pulled its relatively straight line between servo control horn can replace cable length pi ano wire best way because piano Continued page 169 RC Electrics/Kopski Continued page 43 Electric fliers interests Chokes installed receiver leads speed controls discussed December 89 col umn offering discussed simple low-cost solution stubborn motor noise problems encountered some receivers found last summer putting small radio frequency RF choke three speed control leads connect receiver could make difference between flying being able fly chokes available Ace R/C Inc p/n LL 106 Since column appeared Ive received sev eral reader inputs also found comment an150 Model Aviation other column indicating success method So far no has reported failure readers may having impossible re ceiver motor noise problems may refer once again past issue possible solution difficulties includes full info no guarantees will fix cases its worth shot since total cost less $2 kind enough commentthank Speed control adjustments seem pose prob lems some modelers Id like offer some help speed control Ive seen has least adjustment screw have two Ive seen three special situation adjustments basically used match up operation control transmitters throttle stick operation Adjust ments necessary because pulse width modulation characteristics transmitters vary because would rather difficult and/or costly build speed controls having pre cise operational characteristics no adjust ments Besides adjustments allow personaliza tion control operation Thus adjust ments used bring together almost ra dio almost speed control almost per sonal preferences about things should operate what does mean means very likely given speed control adjustment set up liking radio brand may work same another brand would have readjusted means although may like control tune-up because harmo nizes transmitter control stick opera tion may preferred another flier perhaps its best planes Heres detail Normally speed control should adjusted throttle stick trim fully retarded down position motor completely off Also throttle stick fully forward up motor should fully course stick intermediate position motor should some intermedi ate speed detail al ways best have deadband about two clicks throttle stick stick down motor fully off click two INSOLE S SIGECET SCALE PLANS & 000IIOTVTV1DOA 0 3L0 MODEL PLANS 80 50CC CATALOG fS\ NlEERYS MOUNT S9,V9 I9V,SI009IR, SES S ER V ICE 09000 31VV9V Pj1, S VIEWS I,, SCALEPLA,AN oPoooS,,ce ANS ENLARS NO3209 Mdion AR S e,bR 0 N C 27403 0 0 5 9 SCALE DOCUMENTATION9 9 292 0239 J 4 L EN $1695Propeller Drill Jigs 68 Self aligns exIsting prop hole Wabra Bully a-Dolmar Zenos um II SunCraft 1617 LoaTamasesAlbuq NM 87102 505-842-9646 SPEwic Wing Span Wing Area Engine Size AIRCRAFT BIRCH PLYWOOD Vi/8INCH BALSA WOOD1/8 3/16 STICKS1/8 0 1/4 1/8 0 3/8 1/16-INCH3646 1/8 1/2 1/181/16081/8 3/4 1/183/32073/16-INCH 1/18o1/80811 1/183/1609133/1803/16 1/161/410153/1801/4 1/1613/813173/18 3/8 1/1601/218203/18 1/2 1/1613/421283/18 3/4 3/32-INCH3648 3/32 13/320811 3/3211/80813 3/3213/181015 3/3211/41316 3/32 03/81418 3/321 1/21621 3/32 1 3/42431 Dooble Balsa Wood Prees Spruce Basswood Stied 1/4-INCH 1/4 0 1/4 1/4 0 3/8 1/4 0 1/2 1/4 0 3/4 5/16-INCH 5/16a5/16 5/16o3/8 5/160 1/2 0/18o3/4 36 08 11 13 16 17 25 36 13 14 16 18 28 36 16 18 21 31 36 20 22 27 38 46 3/6-INCH3646 113/803/82737 103/8s 1/23041 173/803/44460 21 1/2-INCH3645 1/20 1/23745 461/2o 3/45270 TRIANGULAR 17 19 CUT BALSA 211/do 1/403624 253/8 o 3/8 o 3625 381/201/203637 3/4 0 3/4 0 3647 4610103661 21BALSAPLANKS 283/403036179 29102036164 42103036230 46104036303 202036230 272s3o36329 302o4o36464 36303038490 523o4o36680 BALSA SHEETS 1-INCH 1/160 1 3/32 0 1 1/8 o 1 3/160 1 1/40 3/8 o 1 1/20 1 2-INCH 1/32 o 2 1/1602 3/32 0 2 1/8 02 3/1602 1/4 02 3/8 o 2 1/2 02 3-INCH 36461/3203 1/1603 27363/32 0 3 3040 1/803 33443/1603 3749 r/4 03 41575/160 3 03723/8 0 3 6588 1/203 36484-INCH 30401/3204 36 481/1604 41 543/320 4 46601/804 54723/1604 63841/404 771033/804 1131501/204 3646 4053 4358 5270 60 80 72 95 84 112 103 134 120 160 1 50 200 36 46 65 67 73 101 82 109 95126 114 151 131 193 182 271 219 325 1/640120 12182 1/64 012024364 1/64012048728 1/84o48o482912 1/3206012 60 1/320 120 12119 1/32012024237 1/32o12o48473 1/16o6o12 59 1/160 120 12117 1/16012024234 1/160 12048468 3/320601281 3/32012012181 3/32 0 12024362 3/32 0 12048723 1/806012100 1/80 120 12198 1/80 12024397 1/8 0 12048794 3/160601274 3/16012012146 3/160 120 24283 1/4 060 12 1/4 0 120 12 1/40 12024 1/4 0 120 48 3/8 0 120 12 3/8 0 12 0 24 3/8 0 12 0 48 1/2 0 12 0 12 1/2 0 12024 1/2 0 12048 74 1 46 2 93 585 1 80 360 730 2 02 405 8 08 LITE PLYWOOD 1/801201261 1/60 12024122 1/80 12048244 TAPERED TRAILING EDGE3646 1/80 1/22230 3/16 03/42940 1/4014255 3/16o12o48585 5/16o1o4461 3/80 5272 * OPEN TO THE PUBLIC * Superior Aircraft Materials 12020-G Centralia iian Gardens California 90716 865-3220 Handling Charge $500 $300 COD mum Order $2000 plus UPS accept Personal checks COD fornia Residents add 6% Sales Tax spare Similarly motor should reach fullon condition click two short maximum stick throw deadhands always assure can get full off full some margin both safety reasons accommodate small drift may occur electronics due temperature effects whatever theres Enter throttle trim knob transmitter What trim knob often matter personal prefer ence prefer set adjustments stick operation described above trim fully down off way know stick fully control over range dont have won der trim set right Also using total stick motion gives feel fin est control over full power range However sometimes also try arrange things stick full down off mo tor operation would just begin trim knob set about midrange way should ever want assure motor never fully off flight can use trim knob set some mini mum low-speed level course does fringe limits stick operation described previously adds some versatility very useful some planes adjustment versatility just mentioned difficult often impossible achieve single-adjustment speed controls because simply cant control two independent param eters single variable Controls two trim screws use determine con trol just begins operate other adjustment used establish upper range limit Some manufacturers describe adjustments differently using labels neutral range general effect same Also its typically case adjustments interact Thus might adjust full off full find latter af fected former may work other way around too can indeed very confusing frustrating often made inadequate instructions conditions lead lengthy adjustment sessions during time running motor draining battery quickly may threat safety Well life can made easier Two photos month show use simple accessory cord configured shown help set up controls cord has connectors end plug speed control output instead connecting motor case its done Sermos connectors Anyway eliminates major annoyancethe running motor other end cord has connectors plug meter nearly always ba nana plugs Finally cord has built-in load e substitute motor control can supply power something use 100-ohm 10-watt resistor wired across two cord conduc tors shown resistor Radio Shack part number 271-132 relatively light load meaning does take much current battery drain nowhere near what could motor connected gives much time work control adjustments before battery runs down means youre under pressure time should able better job speed control tune-up having worry about taking too long doing Since variety controls mar ket its describe associated tos Besides dont have em Therefore recommend charge motor battery install accessory cord described set about follow instructions control Instead using motor speed tach ear guide adjustments simply watch volt meter digital meter shown an alog classic moving-needle type can also used although affords lower resolution youll have watch needle closely Keep mind operational description above prepared go back forth between adjust ment screws control has two case single variable set up best compro mise stick range can achieve Ive never seen case can damage anything playing adjustments can turn screws assurance Also Ive no ticed some screw adjustments very sensi tive make small turns screwdriver cases Take notes have can know what screw does what direc tion future reference give expensive control some respect use right tool prop erly sized fitting screwdriver can make adjustment effort much easier abuse trim screws same time get adjustments liking accessory cord can reconnect motor verify results real Heres hoping find information useful helpful Puget Sound Electric Model Fliers display booth Capital Mall Show Olym pia WA spring Ben Almojuela man aged booth wrote tell well Electric display received along sev eral other displays show tells folks didnt know its possi ble fly electric power large amount total interest came Gas crowd Furthermore Electric guys able two things wet power people couldnt like run motors booth fly park ing lot before opening hours beyond PSEMF building Phasoar booth dur ing show just show easy Talk about getting attention Have ever noticed often thats necessary heard speak softly Nice work Benand PSEMF should thats needed say other Electric Continued page 154 August 1990 151 Ultimate FOAM CUTTING WIRE Out performs music wire end nichrome Pkg Send $400 plus $225 shipping handl/ng Worden WoodworksDealer Inquiries 14935 Marie Werren MI 48093Invited 313-294-0890 Rubber ne Power Free Flight Display Control Line Electole Power RIC Airplanes new illustrated 32 pegs tabloid size catalog U5 da $100 Foreigh *300 Penn Valley Hobby Center 837-A W Main St Lansdala PA 19448 215- 388-0770 LATHES FOR THE AVIATION MODELER F ]3LUEAIDGE UNIMATS 20/ MACCICERO CR5 5 soCOMPACTSI ISfIERUNEI IPO sox v UNIMAT 51 HuRRICANE WV 25526 UNIMAT PC 1562-3838 ICATALOG $100 Plus toll iree nuryter orders & questIons PRECISION MODEL PRODUCTS rzzzjz Made USA BARSTOCK ALUMINUM SPINNERS Part NoSize 11-150-B .. 1-1/2 11-175-B ..1-3/4 11-200-B 11-225-B 4 11-226-B .. 2-114 FAt . 11-250-B .. 2-1/2 11-251-B .. 2-1I2FAI 75-B .. 2-3/4 11-276-B 3/4 FAt 00-B 11-301-BFAt 11-325-B 14 11-350-B '3-112 11-375-B /4 11-400-B4 RetailApprox PriceWeight S1395056 oz 1495095 02 1595100 02 1695160 02 1895150ox 1695190ox 2095170oz 229522002 249520002 269526002 289525002 3695340ox 499547002 5995520ox 699557002 3 Pieces Cone Back Plate Retainer Screw Note 3 4 Blade Spinners Available Sizes Add $300 Per Spinner Part NoSize 11-140-A -26 T1-147-A '114-2817mm . 11-610-A . 6x 10mm TT-710-A 10mm TT-516-A 5/16-24 16-A 5/16-24/8mm 11-810-A . 8 x 10mm 11-625-A . 8 x 125mm 11-375-A 3/824 11-125-A 125mm RetailApprox PriceWeight $495061 02 49506102 49506302 49568202 495. 076 02 495. 076 02 495 .076 02 495075 02 595117 02 59511502 3 Pieces Nut Washer Machined Bushing Add $350 Shipping Handling Prices subject change notice ROMCO MFG INC OX 836 SOUTH HOUSTON TEXAS 77587 713 943-1867 RC Electrics/Kopski Continued page 151 ctubs around country Go Electric references often requested read ers Im listing some Id like com ment Ive yet seen myself probably will time goes along no particular order Choose RC Model Engines Mo torbooks International has extensive electric motor section Advanced Guide RC Sport Flying TAB books has chapter Electrics Beginners Guide Electric RC Flying Im sure publisher written Doug Pratt also gentleman runs ModelNetAMAs CompuServe forum may have realized column some others transmit ted Model Aviation via CompuServe upload monthly text using computer use write modem sends infor mation digitally over phone lines can think CompuServe sort holding tank information send usually next day Doug downloads AMA modem right AMAs computer Presto Great stuff just like Electric back references turns out ambitious Doug also has segments dealing Electric several RC Video Magazine tapes dont have complete list Im sure check folks can find Out Building Flying Electric-Powered Model Aircraft Mitch Poling Model Builders Elec tric columnist Its published Kalmbach Electric Flight Dave Day published Ar gus Books Introduction Electric Flight written Ian Peacock dont know publisher Quiet Revolution Bob Boucher As tro granddaddy Electric books believe oldest above Incidentally publications tapes available Zenith Books P0 Box 1 Osceola WI 54020 Send catalog possible course Ive missed some Id appreciate input Ill list ad ditions ftiture columns Finally monthly Electric columns several magazines besides MA include no special order RCM Flying Models RC Re port Model Builder Model Airplane News latter quiet column including just Electric might say interesting fact about authors columns friendly among ourselves Now never knew worthy note until recently pointed out some readers perceive us ri vals Rivals Nope No way As far Im concerned thats just case may other Electric areas authors dont feel myself dont see coming way dont sense among other Elec tric columnists thing know some other colum nists personally both respect con sider friends fact us have flown together Weve shared certain col umns beforehand upon occasion some us have never met routinely communicate letter sometimes phone No other author has need view rival far Im concerned does mean see everything exactly same way time variance opinion preference Thats good area endeavor ever got unpleasant manner implied rivalry Id back away hobby happy has way what another column closes Please ad dress comment query author given column header will respond mail accompanied SASE Happy Hununmmmimg Landings Everyone RC Scale/Parsons Continued page 45 arced over impacted ground simultaneous ly Spectacular end reports RC history made following weekend big bird fly-in BB Webers Bomber Field 13 B-17s parked pit area No didnt get air together grand flyby Saturday afternoon tied down nose-to-tail taxiway 52 count em engines runningquite sight sound Bomber Field BB Webers own private RC field really something Its 650 x 60ft blacktop runway surrounded grass has ample overruns huge pavil ion expansive workbenches 40-ft-high air-conditioned control tower Ah Texans BB loves B-17s having four five 10-footers exactly noon Sunday 130 pilots spectators treated piece de resistance fly-in CAFs B-17 Tex Raiders appeared distance pro ceeded make several close-in one-wing-low flybys magnificent sight extra treat photographers video camerapersons present took in-flight pictures both CAFs Tom Streets Texas Raiders similar flight titudes cannot tell apart Scale RCers have come long way Word has two outstanding Big Bird fly-ins will again play same back-to-back weekends October year Watch big change pace location lets go 154 Model Aviation PROP NUT ADAPTORS V THE GUARDIAN ANGEL TM CRASH PREVENTION SYSTEM 1 Tests monitors R/C electronics CALL 18007299210 FREE information ThIE j Antiques Military Civiliar Helicopters Sajiptanes 2700 plus" -cow *awings color FOTO-PAKSrig KO4CUFAN 01 L4TNES MILLS METIILS BOOKS ourPRECISIIN INSTRUMENTS COMPLETE TITILOC $200 1OOOs items cRihff2C4MPIELLODU Ce ~'Sprgf1d OH 5505 M513 3028562