John Preston L9 Accidentally switch ing off RC transmit tersmaybe stupid after Chil dren flying field Pro con Model fuel explosion STUPID COLUMN An overwhelming number letters Ive received read ers writer saw fit comment content column have limentary However once seem rub someone wrong way letter derogatory comments ar rives mailbox Such letter arrived last month re sponse January Safety column among other topics discussed trans mitter power switches being inadvertently turned off during flight letter Morresville PA modeler Joe McCamley following comments read column find have some good things think good bit really stupid can anybody turn off transmitter switch thinking moving trim levers Are ginners what 15 years modeling cant believe could happen Also four-strokes have never props come loose use wrench tighten prop nutsnot glow plug wrench use both wood plastic props have trouble either kind Anybody puts motor vice starts full throttle has stupid Joes letter contained PS added still like Safety Comes First column Thank Joe guess some things see fit put Safety col umn too may think somewhat stu pid However number letters Ive received people have inadver tently turned off transmitters regard stupidity part Per haps person designed transmit ter should point fingers As example such letters follow ing received Joan Dale Alyea read interest comments Andrea Belk January issue Eyelet Transmitter Homemade neck strap attaching rod gets strap hook transmitter CG better balanceand provides shield On/Off switch Less possibility accidental shut off Model Aviation regarding clear prob ability turning off transmitter acciden tally began testing Airtronics Vanguard PCM high-interference area request Cliff Weirick problem accidental shutoff first things noticed told Cliff about thing bothered us ever fact transmitter out Continued page 16 SO SLZ TO KER..1ICKt~lLLLTAKTl4EJ KID WITN ME THERE iSNT AN\TiUN- JUNO CAN ET INTcUh 14 Model Aviation column provided address Items concern regarding safety aspects model aviation actMdes Content column however opinion author does necessarily represent offidal position Academy Model Aeronautics ap Hook Nuts Threaded Ed1adedFuel Rod 7Tubing ri\_ 4 3AgLjj 2tIth D Ugly Stick designed Phil Kraft alltime favorite ready-to-fly available either 40 60 size wing tail body parts pre-covered brilliant red white black graphics ready final assembly kits con structed entirely balsa ply no foam ude motor mount spinner landing gear wheels fuel tank control rods horns hinges simple stepby-step instructions Specifications Wing span Wing area Length Weight Radio Engine Distributed Hobby Dynamics Distributors PO Box 3726 Champaign IL 61 826-3726 Phone 1-217-355-0022 60 size40 size 6052 72osqinS94sqin 4644 96oz8Ooz 4ch4ch 40-6030-45 Available hobby stores everywhere . Lqnar7Ics 4105 FIeldstone Road Champaign II 81821 NEW VHS-4 HOUR FORMAT 2 \4u1J e- tape youve \aj7 waiting finally youre new hobby just want learn secret of wood plane construction YOU PLANE VIDEO Presents BUILDING IT RIGHT THE FIRST TIME FIRST NO-NONSENSE VIDEO OF WOOD AIRCRAFT CONSTRUCTION APPROX 4 HOURS ON e Radio installation e Straight wing building e Installing hinges eshoar webbing o Applying PO cloth e Servo installation e Setting up new radio 0 Built-up tail surfaces Slab tail surfaces 0 Aileron installation 0 Fuel tank installation eNew engine setup e Fuselage construction eBUILDING STRAIGHT 0 Installing pushrods o Covering film Eliminating warps e Aligning Balancing 0 Final checkout OFLUS MUCH MORE! CREDIT CARD CUSTOMERS Use toll free number place order Have VISA MasterCard VISA ready call OR mail $2405 S & H TO PLANE VIDEO MasterCardPO Box 23128 Des Moines IA 50322 Iowa residents add 4% sales tax vsnrno .rL g 18003838251 balance Used neck strap made some extremely wild land ings Until solution found OUr solution solved both problems necessary tinker inter nal workings transmitter either also works well FUtabas easily adapted set Plus darn cheap simplify things am enclosing ar ticle fix appeared fall issue High Flight being used Airtronics transmitters around FUtabas other brands direct experience have found practically impossible turn off trans mitter reaching trims either side power switch 4-40 rod stops right see sketch Ive found helped getting used exactly trims located too Obviously rod can bent bit dif ferently use neck strap position rod directly over switch will just efficient Feel free use part article wish including drawing think will help others con cerned about switch problem well transmitter balance problem Joan Alyeas High Flight article con cerning above device states thunk up Al Couture device simple dont think necessary clude Joans assembly instructions ac companied original article Continued page 18 12 angspan ~hIer tt ernglpafl propellet dnaon N hJ Hornet Kit N Hand MadeN Ready-to-Fly AweiJUPJBalsa Wood Model Airplanes404 Interceptor YES Please RUSH Classic 3 Packs include 74 Fighter A-J Hornet & 404 Interceptor Pack $1995 plus $300 shipping & handling Add 5100 2nd-Day UPS Name _________________________ Address ______________ ____________________ CityStaieZip Send check money order A-J Manolacturing Inc 0 PO Sos 68132 APortland OR 972h5 503 653-2038 -U U U U odel Aviation 2 xsww ~uui 151521 1 U] WE21 1111 ~ i 3Zi7AA RE SHOOTING DOWN HIGH BALSA PRICES WITH SUPER QUALITY Satisfaction Guaranteed Direct Only BALSA SMUTS 36 48 30 BALSA SliCKS 3648 1162 337161409 3322 401 163810 182 431161214 3162 49332o1410 14 2 563323812 1 323 37332216 1203 37 181808 1163 37 49 31 18141116 3323 44 58 37 18381218 183 5471 46 18121024 3163 6282 553163161116 14 3 73 95 61316381720 5163 85110316122230 38 3 89124 71 14141624 12 3110155 14381926 343165181 138 1164 58 7648 14343444 9324 70 9466 1414055 18 4 80106 66516516-7128 3164 93122 75 38382737 14 4110134 84 38o123246 38 4165226139 38344255 12 4225 2613815270 12123653 MATCHED SMUTS4212 344662 332410012 15878 84os58 554865 9 642034 346790 44 3 BALSA HOT LINE Coil 806 745 6394 10am 6 pm Central Time CUSTOM CUT CONTEST BALSA Sheets Piece ed Close Tolerances AAA Grade Dried ped 100% serious modeler want performance LIGHT 4-6 LB WOOD 36 1/223 1/283 1116 3 3/2203 1/83 31183 11403 3/803 1/23 31403 13 1/164 3/3244 1/84 3/184 11404 3/804 BALSA TRIANGLES 36 42563 8 83062 3562 4574 5591 185 BALSA PLANKS36125 90158 2 57198 32 9388 4293425 1112338298 11124388119 22231135 23335157 24475189 33515285 347151/24385 TAPERED SHEETS 36 142 65 143 85 38268 38396 123120 LONE STAR EPOXY 90Ll-8 95 S 0596 15,,598 300,598 TRAILING EDGE 36 14132 51611439 3811246 2270 must try 4-6 lb balsa * NEW * Hundreds new sizes accessories finishing maerials Send #10 SASE lates catalog SPRUCE STICKS 36 48 I/B 1/81725 18 142026 18 3182232 3/163162838 14 l/43458 1/4 3/84095 1/40 124585 318 0 3/84868 3/8 1126077 12347997 SPRUCE TRIANGLES 36 3/83847 121284 343481 LflIPLY48 118x6175 1/8x12350 114x6275 114s12550 BASSWOOD48 3/163/1626 3/161/435 3/163/838 3/161/246 3/163460 1/4l/442 1/43/649 1/43480 3/803/860 3/81275 3/803490 1/21290 12 034100 BUNDLE DEALS 20-l/16336898 201/16 4361035 20332 o336865 15-3/32 436959 151/80336735 101/8436695 153/16336928 103/15436835 1014336655 1914436930 103/5336878 53/5436655 51/2335540 51/24351080 103/32446885 51/8448500 5315448688 514448840 HARD MAPLE 14 3S 3638 38 12 39 34 1 2 034 BIRCH DO WELS 18 3/s /4 516 38 IS, 40 45 50 58 68 36 09 11 14 25 32 3 PLY 3IRCH 48 1164s12835 1132x12475 1118s12475 1/8s12495 SPLYSIRCH 48 3132s12700 118x12775 3116x12025 114x12625 3j8x12725 112x12900 GROOVED LG MOUNTS 12 lahea 3/834l1 8/40 38 /32140 1/234/3/16/45 INS TANTOLUE 304 Thck298 1 o Th,298 2, TOck550 20 rsn558 LONE STAR MODELS cont 48 Handling charge pay UPS Add *300 COD *400 extra PP APO FPO 1623 57th Se Lubbock TX 79412 Stat. WeacceptVea Ma88arCard personal checksorCOD05% taxrnTexas US currencyonly MinimumWood Order*1000 6Vp Hobby Horn hobby specialtIes MIDWAY MODEL CO Old Timer Kits A/C AND FF Hobby Horn discount prices MMC FULL KITS listed Full Kits include cut parts plan strip sheet wood wire window material Kits marked ihe wire landing gear pm-bent 1936 FlyIng Quaker 84$6476 1938 Powerhouse 5O$2996 1937 Long Cabin 78$4716 1939 T Sportater SO$2996 1937 Quaker Flash 67$4556 1940 Buzzard Bombshell 50 span kit4$3596 1937 AIr Chief 61$3596 r74 ...... 7116 1 00S 0 100 GilderId Timer Sailplanemodifications s own RI1 0 P & W MODEL SERVICE Old Timer kits FF 8/C following discount price full kits full kits clude cut parts plan stick sheet wood wire windshield material 1935 MIss AmerIca 84$7196 1936 Buccaneer 84$5996 1937 DallaIre 108$7516 1938 ClIpper Mk 72$5328 1938 Kloud King 03$4238 1938 Powerhouse 84$5356 1938 Record Breaker 96$6956 1938 Trenton Terror 72$4076 1939 KordalAlake 44$1916 1939 Mercu 72$5836 1939 Zippar4 1940 Ranger 46:: .3196 1940 Sailplane 78$0476 1940 So Long 50$3036 1941 BrigIdler 56$4076 1941 Super Quaker 78$7278 1941 Playboy Jr 54$3118 1941 Playboy Sr 78$7276 1941 Brooklyn Dodoer 56$4236 82 Page 1990 CATALOGUF 00 ad 200$2 pp/lst Ciass free 01 30 add ested 1st order $250 $2001 $4500 add $325 $4501 HobbHorn $7000 add $375 0er 3 MO N ST[A] $7000 add $450 Caiif add 025% tax BOX 2212 Send MO VISNMC # &WESTMINSTEACA 92684 ExpI Check allow up 4 893-8311 30 days clearanceHours Mon-Fri 9AM 5PM checks same mail brought letter Joe MeCamley Jack McDermott following de scription solution inadvertent switching-off problem appears thing stupid solution switch design problem some models RC transmit ters recently bought Futaba 5UAF transmitter noticed switch sit ting much higher Conquestseries radio also can turned off acci dentally operate one-man machine shop part-time made switch guard radio own Several members club belong liked guard made up few have selling have seen switches shut off three times twice trimming once handing transmitter back instructor unclipping neck strap attach ment clip hit switch shut off ra dio three incidents planes taled luckily no hurt sales pitch guard agree manufacturers should redesign switch placement height radios Jacks letter included example switch guard manufactured RMC River view Machine Co one-man company rectangular plastic molding about 34 x /o provides raised barrier Continued page 20 18 Model Aviation BLUES 1CA getting down7 get protected CA mask Safety Plus mask will eliminate CA fumes epoxy polyester resin vapors air breath Lightweight easy breathing comfortable CA Mask $1595 Paint Mask $2045 See hobby dealer first doesnt have what need order direct Safety Plus PO Box 1173 Dept 12M Clinton Mississippi 39056 Call toll free 1-800-842-7233 Mississippi dial 601-924-9640 VISA MASTERCARD accepted COD add $250 shipping handling included Dealer Inquiries Invited PLU5 around switch instructions package state Help prevent accidental shutoff trimming Directions Clean surfaces apply thin coating clear rubber silicone sealant affix guard let dry 24 hrs Jack didnt state much asking switch guard guess sin cere statement letter sales pitch ever should interested purchasing guards write Riverview Ma chine Company 10 Radcliffe Dr Hudson NH 03051 Yet another solu tion acciden tal switching-off problem came Tom Cater Grand Rapids MI Toms solution something suggest radio manufacturers might want consider future produc tion transmitters simply toggle switch locks mechanically both off positions oper ate switch first have pull out switch han dle before can moved Tom included ification sheet Augat Alco switches lock ing levers Model MTL-106D single-pole double-throw switch locks both positions Tom said retrofitted transmitter such switch years ago works great also stated 'All transmitter functions used flying should have type switch Children flying field isnt often receive mail ladies response Safety column fact months column first feature letters two ladies Joan Alyea lady Arlington TX wishes remain anonymous liked letter much Im going reprint its entirety Safety column January issue Model Aviation really grabbed atten tion dont fly RC airplanes husband does problem children flying field very valid concern daughter toddler hus band mistaken notion too could supervise flying However after much discussion agreed would go flying alone would go along watch field disregard childrens safety parents lose themselves hobby just problem RCers ride horses have same complaint about mothers come ride barn leave toddlers roam unsuper vised have seen children climbing trac tors playing parked cars doors left open kids can climb go sleep exploring storage rooms contain rat bait wormers repel lents wander behind horses Just like fellow mentioned mother didnt come out fly ing field baby sit dont go out ride babysit either good conscience cant turn back kid getting trouble cause mom off riding somewhere basic mis conception applica ble both situa tions par ent primarily concerned interests wheth er flying riding Unfortunate ly safety kids becomes secon dary hazards site mini mized par ent can what wants guilt attitude Well others around wholl help keep eye Jun ior isnt anything Jun ior can get takes over un spoken reliance communal babysit ting deprives members chance enjoy hobby Plus everybody assumes somebody else watching kid sort 01 thinking leads dmwnings often wondet parents whe would never con sider leaving child home alone unattended few min utes because danger could get can ex pose unsupervised child countless new hazards flying field barn As article worst offenders fail see negligence no matter diplomatically approached least flying club has advantage vot ing implementing rules have Continued page 22 20 Model Aviation privilege go far saying No Toddlers unless accompanied nonfly ing person mandate have ac quired two warnings about kids roam ing around unsupervised fine prohibi tion bringing couple months stable policy set owners may mention anything about roaming kids fear stepping toes having paying boarders leave elsewhere dont think anyone can honestly mis understand intentions look ing after welfare children par ents have put aside common sense order temporarily pursue own interests Thank addressing problem never before occurred RCers equestrians anything common appears lack kid supervision has no limits Another interesting letter subject came Reverend Benny Vickrey Sr addition being pastor High Point NC also RC full-scale flier Reverend Vickrey began modeling 1954-55 flew Control Line age about six seven before getting RC 1974 also owned 1946 Ercoupe nine years letter stated Ill first admit 1974 1982 bothered also see children flying site knew danger also dollar damage could 1982 son born us after 13 years marriage joy have sharing him full-scale fly ing has over 600 hours air thrill last year half teaching him fly RC have satisfying anything Ive ever done life Lee Jr now seven li censed AMA member recently partici pated first contestand dont know excited dad son What Im trying say guess no children children posed danger flying site very lit tle sympathy curiosity excite ment watch planes part family As son has come along have al ways taught safety first must add responsible parent familiar hobby will keep child under constant control dont suspect either new hobby slack parents other duties too Children hope have keep ing hobby alive design ers plan makers kit producers future say parents responsible Its child being menace flying site adult brought child doesnt watch him son has respect model aircraft ra dios does lot new hightech toys Never have seen him try pick up bother anyones planes site RED MAX 4-CYCLE FUEL Eliminates detonation & kickback 4-cycle engines smoother idle ft power 104 CYCLE129089584580872524972 154 CYCLE1590 1070 101091482031412 RED MAX HELICOPTER FUEL Eirtreniely smooth running extra defoamer drk color special heavy oil helicpbs 10 Helicopter 1340 945 895 858 775 27672 15 Helicopter1640 1120 1060 964 87034112 RED MAX PERFORMANCE FUELI High flash point heavy oil uea tuned pipes ductad fan ft other heavy dty app 5 Performance114084579577570122704 _______ l0Perlormarrce 134094589585877527672 _______ iSPerformance1640 1120 106096487034112 _______ RED MAX PArrERN FUEL Proven best fuel pettern engines using pumps tuned pipe SPattarn1105810760740666120504 lOPattern130691086082374025372 _______ 15 Pattern1605 1085 1025 929 835 28692 _______ SUPER TIGER 3000 FUEL Best fuel Super Tiger 20004000 engines _____Supertiger3000 1290 895 845 808 725 24972 _____ 22 Model Aviation Order Form CALL OR USE THIS HANDY ORDER FORM TO SPEED YOUR ORDER FILL IN OTY ON THE LEFT THE TOTAL ON THE RIGHT Freight free qts gals No hand ling charge Freight collect drums Deduct 3% prepay Mix qty Total qty deter mines price SC orders add 5% telex tax Dealer end club prices avail Accept credit cards checks COD COD add $2 per cartonl Personal checks may held until cleared QTYFUEL1 GAL 4 GAL 24 GAL 60 GAL 128 Gal 154 GAL 1TOTAL$ ordered MIXTUREDRUMAMT RED MAX PREMIUM FUELI Thia fuel beginners ft sport flyers should use Avail synthetic castor blend RED MAX 094568563560056614300 RED MAX 5109079574572565120004 RED MAX 10129089684580872524972 ______ RED MAX 12144098392886077228192 _______ RED MAX 1515901070101091482031412 _______ RED MAX RACING FUEL Trophy winner planes boats ft cars two boat blends castor ok up 40% nIOo REDMAX2O1745124511701125102543185 REDMAX2S1990142013301264119490272 RED MAX402608193318081716153971708 REDMAXSO3163228321231973176885966 REDMAXED22202395222521231998100228 RED MAX 6533252500233022212113107404 Power easy starting power Smooth take offs power intricate maneuvers Red Max makes engine Come alive power performance YOU never expected can have power Its phone call away Power today next week next year Red Maxs secret gredients keep engine last ing longer running power fully other 100% money RED MAX FUEL Continued page 141 RED MAX DIESEL FUEL Suparior diesel back list popular demand customers Ball Bearings1767 1326 1290 1164 1060 DieselPianBearings 1867 1426 1390 1284 1160 SMOKER FLUID best smoker fluid 2 4 cycle engines Smoker Fluid1290 895 840 808 725 24972 back guaran tee com pletely sat isfied reason Red Max has power better idle better wear char acteristics _____ other fuel PLEASE PRINT CUSTOM BLENDED FUEL INGRDIENTS Grand Available type engine use Call price Mm gallon Total boata-cara-helicopters-speed-peniern-scalaY acale-kavan-ignition-st3000 NAME BOX TAEFT ITV EXPIAATIAN flATC Safety/Preston Continued page 22 Since full-time occupation involves safety childrens products can echo Reverend Vickreys observations sig nificant number accident reports daily cross desk wonder parents time incident child left alone long Which brings last subject months column Fuel explosion Two Florida modelers Clifford Hiatt Paul Gauger sent same newspaper clipping Orlando Sentinel captioned Boy Lighter Checks Toys FuelTank Ex plodes accident occurred December 16 reported newspaper Sun day December 17 article stated 11-year-old boy wasnt sure whether model airplanes fuel tank full lit disposable lighter see en gine resulting explosion boy re ceived second- third-degree burns face neck chest hands left leg reported boy supposed play model airplane unless some supervising him Paul Gauger also sent follow-up story incident appeared same newspaper following day December Continued page 144 ALL ABOUT BUILDING FLYING COVERING ENGINES AND MORE GETTING AIRBORNE VOLUME ONE has over 400 large detailed photographs includes topics lIke selecting radio radio control works learning fly instructor learning wIth instructor learn basic maneuvers like landing Other chapters explaIn about ARFs field equipment operating engines assembling airplane easy learning control Installations much Cat Number BOKOO9$1295 GETTiNG AIRBORNE JEII GETTING AIRBORNE VOLUME TWO includes topics like building strength appearance alignment New plastic film covering techniques developed experts beginner explain get nicad batteries rebuild servo engine airframe Additional installations topics shown much Cat Number BOKOIO$1295 MARRY ft MIGLEY & SONS INC p a sax 532 GLENWOOD ILL 60425 April 1990 141 GE1TING AIRBORNE VOWUE PERFECT PATTERNS Fly perfect patterns time F&Es very affordable fiberglass-and-foam pattern planes Vertigo II oldie goodie 65 span 50 fuselage 600 l wing area Designed 60 power Trike gear Kit lA-i 038 $10995 plus shipping NPhoenix V VI proven trophy-winners board renowned Don Lowe Choose 3 sizes power requirements suit own competitive needs Phoenix V 40 Kit #A-1026 $8995 Phoenix V 60 Kit #A-1027 $9995 Phoenix VI 80 Kit #A-1028 $10995 plus shipping Cure-Air aerobat anhedral 64 span 680 l wing area Special anhedral stabs make Cure-Air behave like dream t side up upside down 60 power Kit lA-i 006 $10995 plus shipping F8E kits feature precision-molded fiberglass fuselages balsa-covered foam wings reduced weight Write call FREE catalog pattern planes stand-off scale current classic warbirds trainer lodayl 1836 Stout Drive inster PA 18974 675-9882 Dler inquii invited SHORT KiTS INCLUOt STYROFOAM WING CORES CANOPIES COLNES PLANS ENGINE MOUNTS PIREWALLS MOLDED MISC PARTS SOME HARDWARE AND MATERIALS LIST FOR BALSA AND ADDITIONAL OFF THE SHELF ITEMS AMMO ZERO SR SPAN 3750 PAD TOMAHAWE 55SPAN3750P3R AIRACORRA 55SPAN3750 P510 MUSTANG 54SPAN37 50 S COOL FOLGORE SRSPAN3750YR FOCEE WOLF 1W 34 SPAN 3730 A26 INVADER 65 SPAN . SAPSr~ P3e LIGHTNING 70 SPAN . 74 95 FAA COeSAIR 56 SPAN . 44 PS11IE~ ORDRRIPdG SEND CHECK OR MONEY CR009 FOR REQUIRED ARROUNT PLES $450 PER KIT CANADIANS ADD 3750 ILEINOIS RESIDENTS ADD RVS% YAK WING Mfg 306 E Simmons Galesburg IL 61401 DUAL STRUT NICKEL PLATED NOSE GEAR H 9 Fults Tooling PO Box 95 Champaign IL 618241 Safety/Preston Continued page 141 18 stated boy play ing model airplane garage home lit disposable lighter melt fuel tube model lighter ignited fumes nearby fuel can caused explosion newspaper articles did identify model Pauls accompanying let ter said believed model question RTF ready-to-fly-7--Ed Control Line plane appears good example introduce son hobby Have safe month Radio Technique/Myers Continued page 37 overntght charger can overcharge keep putting back take out Chargers rated current de liver tong takes recharge battery So know what he/she ing Simple answer Use ammeter cut wires charger connect cut ends ammeter nor cut other wtre charger puts out 45 55 mA what get chargers come RC set would rated C/tO charging AA-sized pencell pack Typi cally such batteries will constructed cells rated between 450 550 mAh So C di vided charging current equals 450/45 50/55 sed way referred C/tO charger overnight charger will see shortly Now very same charger used charge lOO-mAH micro-pack would called what Class Thats right would C/2 charger 100/50 w plug same charger 4000-mAb D-cell what have Obviously its 4000/50 ould called C/80 charger care long time ago somebody discovered C/tO charger could left connected dis charged cell overnight cell would fully charged morning based turn printer airfoil plotter with.. 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AdAW5S2533Au CYGNET Software 24843 Del Prado #141b Dana Point CA 92629 eight-hour workday really closer nine hours long take account lunch washup couple coffee breaks So overnight charger born Overnight means something order 15 hours charging C/tO Thats overcharge modern Ni-Cds toler ate little overcharge helps ensure cells come same final voltage called leveling pack should bear mind basic assumption pack fully discharged start 15-hour re charge should also remember Ni-Cd batteries last long timebut forever tI observed charging C/to could go over weekend damaging cells somebody got busy another job found cell left connected C/tO charger long time months would show signs overcharging left connected C/SO charger would retain its charge suffering bad effects overcharging trickle charger born Battery packs must fully charged before attached trickle charger because proper trickle-charging rate fast enough make up tosses caused internal chemistry called self-discharge trickle charger puts out enough current recharge discharged pack batteries could damaged over long time overcharging Going other direction somebody got im patient After ruining few good cells found charging C/3 rate recharged cells three four hours producing signs overcharging quick charger born Some really impatient people wanted get job done no time So dump chargers invented Cells began blow up havent lived until youve seen seated D-size NiCd cell like telephone company uses ex plode like hand grenade Cells made consumer market have vents prevent such explosions connecting single Ni-Cd cell directly 12-volt battery order shock charge can have se rious consequences medical insurance Like Russian roulette get away until dont Cooler heads prevailed some complicated solutions found Internal changes geome try chemistry created fast-charge cells have spring-loaded resealable vents can recharged 15 minutes 4C price Fast-charge cells will dis charge themselves very quickly fastcharge cells will ruined severely overcharge time vent opens cell looses some electrolyte thereby losing capac ity 144 Model Aviation Farnsworth & ElroyInc
Edition: Model Aviation - 1990/04
Page Numbers: 14, 16, 18, 20, 22, 141, 144
John Preston L9 Accidentally switch ing off RC transmit tersmaybe stupid after Chil dren flying field Pro con Model fuel explosion STUPID COLUMN An overwhelming number letters Ive received read ers writer saw fit comment content column have limentary However once seem rub someone wrong way letter derogatory comments ar rives mailbox Such letter arrived last month re sponse January Safety column among other topics discussed trans mitter power switches being inadvertently turned off during flight letter Morresville PA modeler Joe McCamley following comments read column find have some good things think good bit really stupid can anybody turn off transmitter switch thinking moving trim levers Are ginners what 15 years modeling cant believe could happen Also four-strokes have never props come loose use wrench tighten prop nutsnot glow plug wrench use both wood plastic props have trouble either kind Anybody puts motor vice starts full throttle has stupid Joes letter contained PS added still like Safety Comes First column Thank Joe guess some things see fit put Safety col umn too may think somewhat stu pid However number letters Ive received people have inadver tently turned off transmitters regard stupidity part Per haps person designed transmit ter should point fingers As example such letters follow ing received Joan Dale Alyea read interest comments Andrea Belk January issue Eyelet Transmitter Homemade neck strap attaching rod gets strap hook transmitter CG better balanceand provides shield On/Off switch Less possibility accidental shut off Model Aviation regarding clear prob ability turning off transmitter acciden tally began testing Airtronics Vanguard PCM high-interference area request Cliff Weirick problem accidental shutoff first things noticed told Cliff about thing bothered us ever fact transmitter out Continued page 16 SO SLZ TO KER..1ICKt~lLLLTAKTl4EJ KID WITN ME THERE iSNT AN\TiUN- JUNO CAN ET INTcUh 14 Model Aviation column provided address Items concern regarding safety aspects model aviation actMdes Content column however opinion author does necessarily represent offidal position Academy Model Aeronautics ap Hook Nuts Threaded Ed1adedFuel Rod 7Tubing ri\_ 4 3AgLjj 2tIth D Ugly Stick designed Phil Kraft alltime favorite ready-to-fly available either 40 60 size wing tail body parts pre-covered brilliant red white black graphics ready final assembly kits con structed entirely balsa ply no foam ude motor mount spinner landing gear wheels fuel tank control rods horns hinges simple stepby-step instructions Specifications Wing span Wing area Length Weight Radio Engine Distributed Hobby Dynamics Distributors PO Box 3726 Champaign IL 61 826-3726 Phone 1-217-355-0022 60 size40 size 6052 72osqinS94sqin 4644 96oz8Ooz 4ch4ch 40-6030-45 Available hobby stores everywhere . Lqnar7Ics 4105 FIeldstone Road Champaign II 81821 NEW VHS-4 HOUR FORMAT 2 \4u1J e- tape youve \aj7 waiting finally youre new hobby just want learn secret of wood plane construction YOU PLANE VIDEO Presents BUILDING IT RIGHT THE FIRST TIME FIRST NO-NONSENSE VIDEO OF WOOD AIRCRAFT CONSTRUCTION APPROX 4 HOURS ON e Radio installation e Straight wing building e Installing hinges eshoar webbing o Applying PO cloth e Servo installation e Setting up new radio 0 Built-up tail surfaces Slab tail surfaces 0 Aileron installation 0 Fuel tank installation eNew engine setup e Fuselage construction eBUILDING STRAIGHT 0 Installing pushrods o Covering film Eliminating warps e Aligning Balancing 0 Final checkout OFLUS MUCH MORE! CREDIT CARD CUSTOMERS Use toll free number place order Have VISA MasterCard VISA ready call OR mail $2405 S & H TO PLANE VIDEO MasterCardPO Box 23128 Des Moines IA 50322 Iowa residents add 4% sales tax vsnrno .rL g 18003838251 balance Used neck strap made some extremely wild land ings Until solution found OUr solution solved both problems necessary tinker inter nal workings transmitter either also works well FUtabas easily adapted set Plus darn cheap simplify things am enclosing ar ticle fix appeared fall issue High Flight being used Airtronics transmitters around FUtabas other brands direct experience have found practically impossible turn off trans mitter reaching trims either side power switch 4-40 rod stops right see sketch Ive found helped getting used exactly trims located too Obviously rod can bent bit dif ferently use neck strap position rod directly over switch will just efficient Feel free use part article wish including drawing think will help others con cerned about switch problem well transmitter balance problem Joan Alyeas High Flight article con cerning above device states thunk up Al Couture device simple dont think necessary clude Joans assembly instructions ac companied original article Continued page 18 12 angspan ~hIer tt ernglpafl propellet dnaon N hJ Hornet Kit N Hand MadeN Ready-to-Fly AweiJUPJBalsa Wood Model Airplanes404 Interceptor YES Please RUSH Classic 3 Packs include 74 Fighter A-J Hornet & 404 Interceptor Pack $1995 plus $300 shipping & handling Add 5100 2nd-Day UPS Name _________________________ Address ______________ ____________________ CityStaieZip Send check money order A-J Manolacturing Inc 0 PO Sos 68132 APortland OR 972h5 503 653-2038 -U U U U odel Aviation 2 xsww ~uui 151521 1 U] WE21 1111 ~ i 3Zi7AA RE SHOOTING DOWN HIGH BALSA PRICES WITH SUPER QUALITY Satisfaction Guaranteed Direct Only BALSA SMUTS 36 48 30 BALSA SliCKS 3648 1162 337161409 3322 401 163810 182 431161214 3162 49332o1410 14 2 563323812 1 323 37332216 1203 37 181808 1163 37 49 31 18141116 3323 44 58 37 18381218 183 5471 46 18121024 3163 6282 553163161116 14 3 73 95 61316381720 5163 85110316122230 38 3 89124 71 14141624 12 3110155 14381926 343165181 138 1164 58 7648 14343444 9324 70 9466 1414055 18 4 80106 66516516-7128 3164 93122 75 38382737 14 4110134 84 38o123246 38 4165226139 38344255 12 4225 2613815270 12123653 MATCHED SMUTS4212 344662 332410012 15878 84os58 554865 9 642034 346790 44 3 BALSA HOT LINE Coil 806 745 6394 10am 6 pm Central Time CUSTOM CUT CONTEST BALSA Sheets Piece ed Close Tolerances AAA Grade Dried ped 100% serious modeler want performance LIGHT 4-6 LB WOOD 36 1/223 1/283 1116 3 3/2203 1/83 31183 11403 3/803 1/23 31403 13 1/164 3/3244 1/84 3/184 11404 3/804 BALSA TRIANGLES 36 42563 8 83062 3562 4574 5591 185 BALSA PLANKS36125 90158 2 57198 32 9388 4293425 1112338298 11124388119 22231135 23335157 24475189 33515285 347151/24385 TAPERED SHEETS 36 142 65 143 85 38268 38396 123120 LONE STAR EPOXY 90Ll-8 95 S 0596 15,,598 300,598 TRAILING EDGE 36 14132 51611439 3811246 2270 must try 4-6 lb balsa * NEW * Hundreds new sizes accessories finishing maerials Send #10 SASE lates catalog SPRUCE STICKS 36 48 I/B 1/81725 18 142026 18 3182232 3/163162838 14 l/43458 1/4 3/84095 1/40 124585 318 0 3/84868 3/8 1126077 12347997 SPRUCE TRIANGLES 36 3/83847 121284 343481 LflIPLY48 118x6175 1/8x12350 114x6275 114s12550 BASSWOOD48 3/163/1626 3/161/435 3/163/838 3/161/246 3/163460 1/4l/442 1/43/649 1/43480 3/803/860 3/81275 3/803490 1/21290 12 034100 BUNDLE DEALS 20-l/16336898 201/16 4361035 20332 o336865 15-3/32 436959 151/80336735 101/8436695 153/16336928 103/15436835 1014336655 1914436930 103/5336878 53/5436655 51/2335540 51/24351080 103/32446885 51/8448500 5315448688 514448840 HARD MAPLE 14 3S 3638 38 12 39 34 1 2 034 BIRCH DO WELS 18 3/s /4 516 38 IS, 40 45 50 58 68 36 09 11 14 25 32 3 PLY 3IRCH 48 1164s12835 1132x12475 1118s12475 1/8s12495 SPLYSIRCH 48 3132s12700 118x12775 3116x12025 114x12625 3j8x12725 112x12900 GROOVED LG MOUNTS 12 lahea 3/834l1 8/40 38 /32140 1/234/3/16/45 INS TANTOLUE 304 Thck298 1 o Th,298 2, TOck550 20 rsn558 LONE STAR MODELS cont 48 Handling charge pay UPS Add *300 COD *400 extra PP APO FPO 1623 57th Se Lubbock TX 79412 Stat. WeacceptVea Ma88arCard personal checksorCOD05% taxrnTexas US currencyonly MinimumWood Order*1000 6Vp Hobby Horn hobby specialtIes MIDWAY MODEL CO Old Timer Kits A/C AND FF Hobby Horn discount prices MMC FULL KITS listed Full Kits include cut parts plan strip sheet wood wire window material Kits marked ihe wire landing gear pm-bent 1936 FlyIng Quaker 84$6476 1938 Powerhouse 5O$2996 1937 Long Cabin 78$4716 1939 T Sportater SO$2996 1937 Quaker Flash 67$4556 1940 Buzzard Bombshell 50 span kit4$3596 1937 AIr Chief 61$3596 r74 ...... 7116 1 00S 0 100 GilderId Timer Sailplanemodifications s own RI1 0 P & W MODEL SERVICE Old Timer kits FF 8/C following discount price full kits full kits clude cut parts plan stick sheet wood wire windshield material 1935 MIss AmerIca 84$7196 1936 Buccaneer 84$5996 1937 DallaIre 108$7516 1938 ClIpper Mk 72$5328 1938 Kloud King 03$4238 1938 Powerhouse 84$5356 1938 Record Breaker 96$6956 1938 Trenton Terror 72$4076 1939 KordalAlake 44$1916 1939 Mercu 72$5836 1939 Zippar4 1940 Ranger 46:: .3196 1940 Sailplane 78$0476 1940 So Long 50$3036 1941 BrigIdler 56$4076 1941 Super Quaker 78$7278 1941 Playboy Jr 54$3118 1941 Playboy Sr 78$7276 1941 Brooklyn Dodoer 56$4236 82 Page 1990 CATALOGUF 00 ad 200$2 pp/lst Ciass free 01 30 add ested 1st order $250 $2001 $4500 add $325 $4501 HobbHorn $7000 add $375 0er 3 MO N ST[A] $7000 add $450 Caiif add 025% tax BOX 2212 Send MO VISNMC # &WESTMINSTEACA 92684 ExpI Check allow up 4 893-8311 30 days clearanceHours Mon-Fri 9AM 5PM checks same mail brought letter Joe MeCamley Jack McDermott following de scription solution inadvertent switching-off problem appears thing stupid solution switch design problem some models RC transmit ters recently bought Futaba 5UAF transmitter noticed switch sit ting much higher Conquestseries radio also can turned off acci dentally operate one-man machine shop part-time made switch guard radio own Several members club belong liked guard made up few have selling have seen switches shut off three times twice trimming once handing transmitter back instructor unclipping neck strap attach ment clip hit switch shut off ra dio three incidents planes taled luckily no hurt sales pitch guard agree manufacturers should redesign switch placement height radios Jacks letter included example switch guard manufactured RMC River view Machine Co one-man company rectangular plastic molding about 34 x /o provides raised barrier Continued page 20 18 Model Aviation BLUES 1CA getting down7 get protected CA mask Safety Plus mask will eliminate CA fumes epoxy polyester resin vapors air breath Lightweight easy breathing comfortable CA Mask $1595 Paint Mask $2045 See hobby dealer first doesnt have what need order direct Safety Plus PO Box 1173 Dept 12M Clinton Mississippi 39056 Call toll free 1-800-842-7233 Mississippi dial 601-924-9640 VISA MASTERCARD accepted COD add $250 shipping handling included Dealer Inquiries Invited PLU5 around switch instructions package state Help prevent accidental shutoff trimming Directions Clean surfaces apply thin coating clear rubber silicone sealant affix guard let dry 24 hrs Jack didnt state much asking switch guard guess sin cere statement letter sales pitch ever should interested purchasing guards write Riverview Ma chine Company 10 Radcliffe Dr Hudson NH 03051 Yet another solu tion acciden tal switching-off problem came Tom Cater Grand Rapids MI Toms solution something suggest radio manufacturers might want consider future produc tion transmitters simply toggle switch locks mechanically both off positions oper ate switch first have pull out switch han dle before can moved Tom included ification sheet Augat Alco switches lock ing levers Model MTL-106D single-pole double-throw switch locks both positions Tom said retrofitted transmitter such switch years ago works great also stated 'All transmitter functions used flying should have type switch Children flying field isnt often receive mail ladies response Safety column fact months column first feature letters two ladies Joan Alyea lady Arlington TX wishes remain anonymous liked letter much Im going reprint its entirety Safety column January issue Model Aviation really grabbed atten tion dont fly RC airplanes husband does problem children flying field very valid concern daughter toddler hus band mistaken notion too could supervise flying However after much discussion agreed would go flying alone would go along watch field disregard childrens safety parents lose themselves hobby just problem RCers ride horses have same complaint about mothers come ride barn leave toddlers roam unsuper vised have seen children climbing trac tors playing parked cars doors left open kids can climb go sleep exploring storage rooms contain rat bait wormers repel lents wander behind horses Just like fellow mentioned mother didnt come out fly ing field baby sit dont go out ride babysit either good conscience cant turn back kid getting trouble cause mom off riding somewhere basic mis conception applica ble both situa tions par ent primarily concerned interests wheth er flying riding Unfortunate ly safety kids becomes secon dary hazards site mini mized par ent can what wants guilt attitude Well others around wholl help keep eye Jun ior isnt anything Jun ior can get takes over un spoken reliance communal babysit ting deprives members chance enjoy hobby Plus everybody assumes somebody else watching kid sort 01 thinking leads dmwnings often wondet parents whe would never con sider leaving child home alone unattended few min utes because danger could get can ex pose unsupervised child countless new hazards flying field barn As article worst offenders fail see negligence no matter diplomatically approached least flying club has advantage vot ing implementing rules have Continued page 22 20 Model Aviation privilege go far saying No Toddlers unless accompanied nonfly ing person mandate have ac quired two warnings about kids roam ing around unsupervised fine prohibi tion bringing couple months stable policy set owners may mention anything about roaming kids fear stepping toes having paying boarders leave elsewhere dont think anyone can honestly mis understand intentions look ing after welfare children par ents have put aside common sense order temporarily pursue own interests Thank addressing problem never before occurred RCers equestrians anything common appears lack kid supervision has no limits Another interesting letter subject came Reverend Benny Vickrey Sr addition being pastor High Point NC also RC full-scale flier Reverend Vickrey began modeling 1954-55 flew Control Line age about six seven before getting RC 1974 also owned 1946 Ercoupe nine years letter stated Ill first admit 1974 1982 bothered also see children flying site knew danger also dollar damage could 1982 son born us after 13 years marriage joy have sharing him full-scale fly ing has over 600 hours air thrill last year half teaching him fly RC have satisfying anything Ive ever done life Lee Jr now seven li censed AMA member recently partici pated first contestand dont know excited dad son What Im trying say guess no children children posed danger flying site very lit tle sympathy curiosity excite ment watch planes part family As son has come along have al ways taught safety first must add responsible parent familiar hobby will keep child under constant control dont suspect either new hobby slack parents other duties too Children hope have keep ing hobby alive design ers plan makers kit producers future say parents responsible Its child being menace flying site adult brought child doesnt watch him son has respect model aircraft ra dios does lot new hightech toys Never have seen him try pick up bother anyones planes site RED MAX 4-CYCLE FUEL Eliminates detonation & kickback 4-cycle engines smoother idle ft power 104 CYCLE129089584580872524972 154 CYCLE1590 1070 101091482031412 RED MAX HELICOPTER FUEL Eirtreniely smooth running extra defoamer drk color special heavy oil helicpbs 10 Helicopter 1340 945 895 858 775 27672 15 Helicopter1640 1120 1060 964 87034112 RED MAX PERFORMANCE FUELI High flash point heavy oil uea tuned pipes ductad fan ft other heavy dty app 5 Performance114084579577570122704 _______ l0Perlormarrce 134094589585877527672 _______ iSPerformance1640 1120 106096487034112 _______ RED MAX PArrERN FUEL Proven best fuel pettern engines using pumps tuned pipe SPattarn1105810760740666120504 lOPattern130691086082374025372 _______ 15 Pattern1605 1085 1025 929 835 28692 _______ SUPER TIGER 3000 FUEL Best fuel Super Tiger 20004000 engines _____Supertiger3000 1290 895 845 808 725 24972 _____ 22 Model Aviation Order Form CALL OR USE THIS HANDY ORDER FORM TO SPEED YOUR ORDER FILL IN OTY ON THE LEFT THE TOTAL ON THE RIGHT Freight free qts gals No hand ling charge Freight collect drums Deduct 3% prepay Mix qty Total qty deter mines price SC orders add 5% telex tax Dealer end club prices avail Accept credit cards checks COD COD add $2 per cartonl Personal checks may held until cleared QTYFUEL1 GAL 4 GAL 24 GAL 60 GAL 128 Gal 154 GAL 1TOTAL$ ordered MIXTUREDRUMAMT RED MAX PREMIUM FUELI Thia fuel beginners ft sport flyers should use Avail synthetic castor blend RED MAX 094568563560056614300 RED MAX 5109079574572565120004 RED MAX 10129089684580872524972 ______ RED MAX 12144098392886077228192 _______ RED MAX 1515901070101091482031412 _______ RED MAX RACING FUEL Trophy winner planes boats ft cars two boat blends castor ok up 40% nIOo REDMAX2O1745124511701125102543185 REDMAX2S1990142013301264119490272 RED MAX402608193318081716153971708 REDMAXSO3163228321231973176885966 REDMAXED22202395222521231998100228 RED MAX 6533252500233022212113107404 Power easy starting power Smooth take offs power intricate maneuvers Red Max makes engine Come alive power performance YOU never expected can have power Its phone call away Power today next week next year Red Maxs secret gredients keep engine last ing longer running power fully other 100% money RED MAX FUEL Continued page 141 RED MAX DIESEL FUEL Suparior diesel back list popular demand customers Ball Bearings1767 1326 1290 1164 1060 DieselPianBearings 1867 1426 1390 1284 1160 SMOKER FLUID best smoker fluid 2 4 cycle engines Smoker Fluid1290 895 840 808 725 24972 back guaran tee com pletely sat isfied reason Red Max has power better idle better wear char acteristics _____ other fuel PLEASE PRINT CUSTOM BLENDED FUEL INGRDIENTS Grand Available type engine use Call price Mm gallon Total boata-cara-helicopters-speed-peniern-scalaY acale-kavan-ignition-st3000 NAME BOX TAEFT ITV EXPIAATIAN flATC Safety/Preston Continued page 22 Since full-time occupation involves safety childrens products can echo Reverend Vickreys observations sig nificant number accident reports daily cross desk wonder parents time incident child left alone long Which brings last subject months column Fuel explosion Two Florida modelers Clifford Hiatt Paul Gauger sent same newspaper clipping Orlando Sentinel captioned Boy Lighter Checks Toys FuelTank Ex plodes accident occurred December 16 reported newspaper Sun day December 17 article stated 11-year-old boy wasnt sure whether model airplanes fuel tank full lit disposable lighter see en gine resulting explosion boy re ceived second- third-degree burns face neck chest hands left leg reported boy supposed play model airplane unless some supervising him Paul Gauger also sent follow-up story incident appeared same newspaper following day December Continued page 144 ALL ABOUT BUILDING FLYING COVERING ENGINES AND MORE GETTING AIRBORNE VOLUME ONE has over 400 large detailed photographs includes topics lIke selecting radio radio control works learning fly instructor learning wIth instructor learn basic maneuvers like landing Other chapters explaIn about ARFs field equipment operating engines assembling airplane easy learning control Installations much Cat Number BOKOO9$1295 GETTiNG AIRBORNE JEII GETTING AIRBORNE VOLUME TWO includes topics like building strength appearance alignment New plastic film covering techniques developed experts beginner explain get nicad batteries rebuild servo engine airframe Additional installations topics shown much Cat Number BOKOIO$1295 MARRY ft MIGLEY & SONS INC p a sax 532 GLENWOOD ILL 60425 April 1990 141 GE1TING AIRBORNE VOWUE PERFECT PATTERNS Fly perfect patterns time F&Es very affordable fiberglass-and-foam pattern planes Vertigo II oldie goodie 65 span 50 fuselage 600 l wing area Designed 60 power Trike gear Kit lA-i 038 $10995 plus shipping NPhoenix V VI proven trophy-winners board renowned Don Lowe Choose 3 sizes power requirements suit own competitive needs Phoenix V 40 Kit #A-1026 $8995 Phoenix V 60 Kit #A-1027 $9995 Phoenix VI 80 Kit #A-1028 $10995 plus shipping Cure-Air aerobat anhedral 64 span 680 l wing area Special anhedral stabs make Cure-Air behave like dream t side up upside down 60 power Kit lA-i 006 $10995 plus shipping F8E kits feature precision-molded fiberglass fuselages balsa-covered foam wings reduced weight Write call FREE catalog pattern planes stand-off scale current classic warbirds trainer lodayl 1836 Stout Drive inster PA 18974 675-9882 Dler inquii invited SHORT KiTS INCLUOt STYROFOAM WING CORES CANOPIES COLNES PLANS ENGINE MOUNTS PIREWALLS MOLDED MISC PARTS SOME HARDWARE AND MATERIALS LIST FOR BALSA AND ADDITIONAL OFF THE SHELF ITEMS AMMO ZERO SR SPAN 3750 PAD TOMAHAWE 55SPAN3750P3R AIRACORRA 55SPAN3750 P510 MUSTANG 54SPAN37 50 S COOL FOLGORE SRSPAN3750YR FOCEE WOLF 1W 34 SPAN 3730 A26 INVADER 65 SPAN . SAPSr~ P3e LIGHTNING 70 SPAN . 74 95 FAA COeSAIR 56 SPAN . 44 PS11IE~ ORDRRIPdG SEND CHECK OR MONEY CR009 FOR REQUIRED ARROUNT PLES $450 PER KIT CANADIANS ADD 3750 ILEINOIS RESIDENTS ADD RVS% YAK WING Mfg 306 E Simmons Galesburg IL 61401 DUAL STRUT NICKEL PLATED NOSE GEAR H 9 Fults Tooling PO Box 95 Champaign IL 618241 Safety/Preston Continued page 141 18 stated boy play ing model airplane garage home lit disposable lighter melt fuel tube model lighter ignited fumes nearby fuel can caused explosion newspaper articles did identify model Pauls accompanying let ter said believed model question RTF ready-to-fly-7--Ed Control Line plane appears good example introduce son hobby Have safe month Radio Technique/Myers Continued page 37 overntght charger can overcharge keep putting back take out Chargers rated current de liver tong takes recharge battery So know what he/she ing Simple answer Use ammeter cut wires charger connect cut ends ammeter nor cut other wtre charger puts out 45 55 mA what get chargers come RC set would rated C/tO charging AA-sized pencell pack Typi cally such batteries will constructed cells rated between 450 550 mAh So C di vided charging current equals 450/45 50/55 sed way referred C/tO charger overnight charger will see shortly Now very same charger used charge lOO-mAH micro-pack would called what Class Thats right would C/2 charger 100/50 w plug same charger 4000-mAb D-cell what have Obviously its 4000/50 ould called C/80 charger care long time ago somebody discovered C/tO charger could left connected dis charged cell overnight cell would fully charged morning based turn printer airfoil plotter with.. 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AdAW5S2533Au CYGNET Software 24843 Del Prado #141b Dana Point CA 92629 eight-hour workday really closer nine hours long take account lunch washup couple coffee breaks So overnight charger born Overnight means something order 15 hours charging C/tO Thats overcharge modern Ni-Cds toler ate little overcharge helps ensure cells come same final voltage called leveling pack should bear mind basic assumption pack fully discharged start 15-hour re charge should also remember Ni-Cd batteries last long timebut forever tI observed charging C/to could go over weekend damaging cells somebody got busy another job found cell left connected C/tO charger long time months would show signs overcharging left connected C/SO charger would retain its charge suffering bad effects overcharging trickle charger born Battery packs must fully charged before attached trickle charger because proper trickle-charging rate fast enough make up tosses caused internal chemistry called self-discharge trickle charger puts out enough current recharge discharged pack batteries could damaged over long time overcharging Going other direction somebody got im patient After ruining few good cells found charging C/3 rate recharged cells three four hours producing signs overcharging quick charger born Some really impatient people wanted get job done no time So dump chargers invented Cells began blow up havent lived until youve seen seated D-size NiCd cell like telephone company uses ex plode like hand grenade Cells made consumer market have vents prevent such explosions connecting single Ni-Cd cell directly 12-volt battery order shock charge can have se rious consequences medical insurance Like Russian roulette get away until dont Cooler heads prevailed some complicated solutions found Internal changes geome try chemistry created fast-charge cells have spring-loaded resealable vents can recharged 15 minutes 4C price Fast-charge cells will dis charge themselves very quickly fastcharge cells will ruined severely overcharge time vent opens cell looses some electrolyte thereby losing capac ity 144 Model Aviation Farnsworth & ElroyInc
Edition: Model Aviation - 1990/04
Page Numbers: 14, 16, 18, 20, 22, 141, 144
John Preston L9 Accidentally switch ing off RC transmit tersmaybe stupid after Chil dren flying field Pro con Model fuel explosion STUPID COLUMN An overwhelming number letters Ive received read ers writer saw fit comment content column have limentary However once seem rub someone wrong way letter derogatory comments ar rives mailbox Such letter arrived last month re sponse January Safety column among other topics discussed trans mitter power switches being inadvertently turned off during flight letter Morresville PA modeler Joe McCamley following comments read column find have some good things think good bit really stupid can anybody turn off transmitter switch thinking moving trim levers Are ginners what 15 years modeling cant believe could happen Also four-strokes have never props come loose use wrench tighten prop nutsnot glow plug wrench use both wood plastic props have trouble either kind Anybody puts motor vice starts full throttle has stupid Joes letter contained PS added still like Safety Comes First column Thank Joe guess some things see fit put Safety col umn too may think somewhat stu pid However number letters Ive received people have inadver tently turned off transmitters regard stupidity part Per haps person designed transmit ter should point fingers As example such letters follow ing received Joan Dale Alyea read interest comments Andrea Belk January issue Eyelet Transmitter Homemade neck strap attaching rod gets strap hook transmitter CG better balanceand provides shield On/Off switch Less possibility accidental shut off Model Aviation regarding clear prob ability turning off transmitter acciden tally began testing Airtronics Vanguard PCM high-interference area request Cliff Weirick problem accidental shutoff first things noticed told Cliff about thing bothered us ever fact transmitter out Continued page 16 SO SLZ TO KER..1ICKt~lLLLTAKTl4EJ KID WITN ME THERE iSNT AN\TiUN- JUNO CAN ET INTcUh 14 Model Aviation column provided address Items concern regarding safety aspects model aviation actMdes Content column however opinion author does necessarily represent offidal position Academy Model Aeronautics ap Hook Nuts Threaded Ed1adedFuel Rod 7Tubing ri\_ 4 3AgLjj 2tIth D Ugly Stick designed Phil Kraft alltime favorite ready-to-fly available either 40 60 size wing tail body parts pre-covered brilliant red white black graphics ready final assembly kits con structed entirely balsa ply no foam ude motor mount spinner landing gear wheels fuel tank control rods horns hinges simple stepby-step instructions Specifications Wing span Wing area Length Weight Radio Engine Distributed Hobby Dynamics Distributors PO Box 3726 Champaign IL 61 826-3726 Phone 1-217-355-0022 60 size40 size 6052 72osqinS94sqin 4644 96oz8Ooz 4ch4ch 40-6030-45 Available hobby stores everywhere . Lqnar7Ics 4105 FIeldstone Road Champaign II 81821 NEW VHS-4 HOUR FORMAT 2 \4u1J e- tape youve \aj7 waiting finally youre new hobby just want learn secret of wood plane construction YOU PLANE VIDEO Presents BUILDING IT RIGHT THE FIRST TIME FIRST NO-NONSENSE VIDEO OF WOOD AIRCRAFT CONSTRUCTION APPROX 4 HOURS ON e Radio installation e Straight wing building e Installing hinges eshoar webbing o Applying PO cloth e Servo installation e Setting up new radio 0 Built-up tail surfaces Slab tail surfaces 0 Aileron installation 0 Fuel tank installation eNew engine setup e Fuselage construction eBUILDING STRAIGHT 0 Installing pushrods o Covering film Eliminating warps e Aligning Balancing 0 Final checkout OFLUS MUCH MORE! CREDIT CARD CUSTOMERS Use toll free number place order Have VISA MasterCard VISA ready call OR mail $2405 S & H TO PLANE VIDEO MasterCardPO Box 23128 Des Moines IA 50322 Iowa residents add 4% sales tax vsnrno .rL g 18003838251 balance Used neck strap made some extremely wild land ings Until solution found OUr solution solved both problems necessary tinker inter nal workings transmitter either also works well FUtabas easily adapted set Plus darn cheap simplify things am enclosing ar ticle fix appeared fall issue High Flight being used Airtronics transmitters around FUtabas other brands direct experience have found practically impossible turn off trans mitter reaching trims either side power switch 4-40 rod stops right see sketch Ive found helped getting used exactly trims located too Obviously rod can bent bit dif ferently use neck strap position rod directly over switch will just efficient Feel free use part article wish including drawing think will help others con cerned about switch problem well transmitter balance problem Joan Alyeas High Flight article con cerning above device states thunk up Al Couture device simple dont think necessary clude Joans assembly instructions ac companied original article Continued page 18 12 angspan ~hIer tt ernglpafl propellet dnaon N hJ Hornet Kit N Hand MadeN Ready-to-Fly AweiJUPJBalsa Wood Model Airplanes404 Interceptor YES Please RUSH Classic 3 Packs include 74 Fighter A-J Hornet & 404 Interceptor Pack $1995 plus $300 shipping & handling Add 5100 2nd-Day UPS Name _________________________ Address ______________ ____________________ CityStaieZip Send check money order A-J Manolacturing Inc 0 PO Sos 68132 APortland OR 972h5 503 653-2038 -U U U U odel Aviation 2 xsww ~uui 151521 1 U] WE21 1111 ~ i 3Zi7AA RE SHOOTING DOWN HIGH BALSA PRICES WITH SUPER QUALITY Satisfaction Guaranteed Direct Only BALSA SMUTS 36 48 30 BALSA SliCKS 3648 1162 337161409 3322 401 163810 182 431161214 3162 49332o1410 14 2 563323812 1 323 37332216 1203 37 181808 1163 37 49 31 18141116 3323 44 58 37 18381218 183 5471 46 18121024 3163 6282 553163161116 14 3 73 95 61316381720 5163 85110316122230 38 3 89124 71 14141624 12 3110155 14381926 343165181 138 1164 58 7648 14343444 9324 70 9466 1414055 18 4 80106 66516516-7128 3164 93122 75 38382737 14 4110134 84 38o123246 38 4165226139 38344255 12 4225 2613815270 12123653 MATCHED SMUTS4212 344662 332410012 15878 84os58 554865 9 642034 346790 44 3 BALSA HOT LINE Coil 806 745 6394 10am 6 pm Central Time CUSTOM CUT CONTEST BALSA Sheets Piece ed Close Tolerances AAA Grade Dried ped 100% serious modeler want performance LIGHT 4-6 LB WOOD 36 1/223 1/283 1116 3 3/2203 1/83 31183 11403 3/803 1/23 31403 13 1/164 3/3244 1/84 3/184 11404 3/804 BALSA TRIANGLES 36 42563 8 83062 3562 4574 5591 185 BALSA PLANKS36125 90158 2 57198 32 9388 4293425 1112338298 11124388119 22231135 23335157 24475189 33515285 347151/24385 TAPERED SHEETS 36 142 65 143 85 38268 38396 123120 LONE STAR EPOXY 90Ll-8 95 S 0596 15,,598 300,598 TRAILING EDGE 36 14132 51611439 3811246 2270 must try 4-6 lb balsa * NEW * Hundreds new sizes accessories finishing maerials Send #10 SASE lates catalog SPRUCE STICKS 36 48 I/B 1/81725 18 142026 18 3182232 3/163162838 14 l/43458 1/4 3/84095 1/40 124585 318 0 3/84868 3/8 1126077 12347997 SPRUCE TRIANGLES 36 3/83847 121284 343481 LflIPLY48 118x6175 1/8x12350 114x6275 114s12550 BASSWOOD48 3/163/1626 3/161/435 3/163/838 3/161/246 3/163460 1/4l/442 1/43/649 1/43480 3/803/860 3/81275 3/803490 1/21290 12 034100 BUNDLE DEALS 20-l/16336898 201/16 4361035 20332 o336865 15-3/32 436959 151/80336735 101/8436695 153/16336928 103/15436835 1014336655 1914436930 103/5336878 53/5436655 51/2335540 51/24351080 103/32446885 51/8448500 5315448688 514448840 HARD MAPLE 14 3S 3638 38 12 39 34 1 2 034 BIRCH DO WELS 18 3/s /4 516 38 IS, 40 45 50 58 68 36 09 11 14 25 32 3 PLY 3IRCH 48 1164s12835 1132x12475 1118s12475 1/8s12495 SPLYSIRCH 48 3132s12700 118x12775 3116x12025 114x12625 3j8x12725 112x12900 GROOVED LG MOUNTS 12 lahea 3/834l1 8/40 38 /32140 1/234/3/16/45 INS TANTOLUE 304 Thck298 1 o Th,298 2, TOck550 20 rsn558 LONE STAR MODELS cont 48 Handling charge pay UPS Add *300 COD *400 extra PP APO FPO 1623 57th Se Lubbock TX 79412 Stat. WeacceptVea Ma88arCard personal checksorCOD05% taxrnTexas US currencyonly MinimumWood Order*1000 6Vp Hobby Horn hobby specialtIes MIDWAY MODEL CO Old Timer Kits A/C AND FF Hobby Horn discount prices MMC FULL KITS listed Full Kits include cut parts plan strip sheet wood wire window material Kits marked ihe wire landing gear pm-bent 1936 FlyIng Quaker 84$6476 1938 Powerhouse 5O$2996 1937 Long Cabin 78$4716 1939 T Sportater SO$2996 1937 Quaker Flash 67$4556 1940 Buzzard Bombshell 50 span kit4$3596 1937 AIr Chief 61$3596 r74 ...... 7116 1 00S 0 100 GilderId Timer Sailplanemodifications s own RI1 0 P & W MODEL SERVICE Old Timer kits FF 8/C following discount price full kits full kits clude cut parts plan stick sheet wood wire windshield material 1935 MIss AmerIca 84$7196 1936 Buccaneer 84$5996 1937 DallaIre 108$7516 1938 ClIpper Mk 72$5328 1938 Kloud King 03$4238 1938 Powerhouse 84$5356 1938 Record Breaker 96$6956 1938 Trenton Terror 72$4076 1939 KordalAlake 44$1916 1939 Mercu 72$5836 1939 Zippar4 1940 Ranger 46:: .3196 1940 Sailplane 78$0476 1940 So Long 50$3036 1941 BrigIdler 56$4076 1941 Super Quaker 78$7278 1941 Playboy Jr 54$3118 1941 Playboy Sr 78$7276 1941 Brooklyn Dodoer 56$4236 82 Page 1990 CATALOGUF 00 ad 200$2 pp/lst Ciass free 01 30 add ested 1st order $250 $2001 $4500 add $325 $4501 HobbHorn $7000 add $375 0er 3 MO N ST[A] $7000 add $450 Caiif add 025% tax BOX 2212 Send MO VISNMC # &WESTMINSTEACA 92684 ExpI Check allow up 4 893-8311 30 days clearanceHours Mon-Fri 9AM 5PM checks same mail brought letter Joe MeCamley Jack McDermott following de scription solution inadvertent switching-off problem appears thing stupid solution switch design problem some models RC transmit ters recently bought Futaba 5UAF transmitter noticed switch sit ting much higher Conquestseries radio also can turned off acci dentally operate one-man machine shop part-time made switch guard radio own Several members club belong liked guard made up few have selling have seen switches shut off three times twice trimming once handing transmitter back instructor unclipping neck strap attach ment clip hit switch shut off ra dio three incidents planes taled luckily no hurt sales pitch guard agree manufacturers should redesign switch placement height radios Jacks letter included example switch guard manufactured RMC River view Machine Co one-man company rectangular plastic molding about 34 x /o provides raised barrier Continued page 20 18 Model Aviation BLUES 1CA getting down7 get protected CA mask Safety Plus mask will eliminate CA fumes epoxy polyester resin vapors air breath Lightweight easy breathing comfortable CA Mask $1595 Paint Mask $2045 See hobby dealer first doesnt have what need order direct Safety Plus PO Box 1173 Dept 12M Clinton Mississippi 39056 Call toll free 1-800-842-7233 Mississippi dial 601-924-9640 VISA MASTERCARD accepted COD add $250 shipping handling included Dealer Inquiries Invited PLU5 around switch instructions package state Help prevent accidental shutoff trimming Directions Clean surfaces apply thin coating clear rubber silicone sealant affix guard let dry 24 hrs Jack didnt state much asking switch guard guess sin cere statement letter sales pitch ever should interested purchasing guards write Riverview Ma chine Company 10 Radcliffe Dr Hudson NH 03051 Yet another solu tion acciden tal switching-off problem came Tom Cater Grand Rapids MI Toms solution something suggest radio manufacturers might want consider future produc tion transmitters simply toggle switch locks mechanically both off positions oper ate switch first have pull out switch han dle before can moved Tom included ification sheet Augat Alco switches lock ing levers Model MTL-106D single-pole double-throw switch locks both positions Tom said retrofitted transmitter such switch years ago works great also stated 'All transmitter functions used flying should have type switch Children flying field isnt often receive mail ladies response Safety column fact months column first feature letters two ladies Joan Alyea lady Arlington TX wishes remain anonymous liked letter much Im going reprint its entirety Safety column January issue Model Aviation really grabbed atten tion dont fly RC airplanes husband does problem children flying field very valid concern daughter toddler hus band mistaken notion too could supervise flying However after much discussion agreed would go flying alone would go along watch field disregard childrens safety parents lose themselves hobby just problem RCers ride horses have same complaint about mothers come ride barn leave toddlers roam unsuper vised have seen children climbing trac tors playing parked cars doors left open kids can climb go sleep exploring storage rooms contain rat bait wormers repel lents wander behind horses Just like fellow mentioned mother didnt come out fly ing field baby sit dont go out ride babysit either good conscience cant turn back kid getting trouble cause mom off riding somewhere basic mis conception applica ble both situa tions par ent primarily concerned interests wheth er flying riding Unfortunate ly safety kids becomes secon dary hazards site mini mized par ent can what wants guilt attitude Well others around wholl help keep eye Jun ior isnt anything Jun ior can get takes over un spoken reliance communal babysit ting deprives members chance enjoy hobby Plus everybody assumes somebody else watching kid sort 01 thinking leads dmwnings often wondet parents whe would never con sider leaving child home alone unattended few min utes because danger could get can ex pose unsupervised child countless new hazards flying field barn As article worst offenders fail see negligence no matter diplomatically approached least flying club has advantage vot ing implementing rules have Continued page 22 20 Model Aviation privilege go far saying No Toddlers unless accompanied nonfly ing person mandate have ac quired two warnings about kids roam ing around unsupervised fine prohibi tion bringing couple months stable policy set owners may mention anything about roaming kids fear stepping toes having paying boarders leave elsewhere dont think anyone can honestly mis understand intentions look ing after welfare children par ents have put aside common sense order temporarily pursue own interests Thank addressing problem never before occurred RCers equestrians anything common appears lack kid supervision has no limits Another interesting letter subject came Reverend Benny Vickrey Sr addition being pastor High Point NC also RC full-scale flier Reverend Vickrey began modeling 1954-55 flew Control Line age about six seven before getting RC 1974 also owned 1946 Ercoupe nine years letter stated Ill first admit 1974 1982 bothered also see children flying site knew danger also dollar damage could 1982 son born us after 13 years marriage joy have sharing him full-scale fly ing has over 600 hours air thrill last year half teaching him fly RC have satisfying anything Ive ever done life Lee Jr now seven li censed AMA member recently partici pated first contestand dont know excited dad son What Im trying say guess no children children posed danger flying site very lit tle sympathy curiosity excite ment watch planes part family As son has come along have al ways taught safety first must add responsible parent familiar hobby will keep child under constant control dont suspect either new hobby slack parents other duties too Children hope have keep ing hobby alive design ers plan makers kit producers future say parents responsible Its child being menace flying site adult brought child doesnt watch him son has respect model aircraft ra dios does lot new hightech toys Never have seen him try pick up bother anyones planes site RED MAX 4-CYCLE FUEL Eliminates detonation & kickback 4-cycle engines smoother idle ft power 104 CYCLE129089584580872524972 154 CYCLE1590 1070 101091482031412 RED MAX HELICOPTER FUEL Eirtreniely smooth running extra defoamer drk color special heavy oil helicpbs 10 Helicopter 1340 945 895 858 775 27672 15 Helicopter1640 1120 1060 964 87034112 RED MAX PERFORMANCE FUELI High flash point heavy oil uea tuned pipes ductad fan ft other heavy dty app 5 Performance114084579577570122704 _______ l0Perlormarrce 134094589585877527672 _______ iSPerformance1640 1120 106096487034112 _______ RED MAX PArrERN FUEL Proven best fuel pettern engines using pumps tuned pipe SPattarn1105810760740666120504 lOPattern130691086082374025372 _______ 15 Pattern1605 1085 1025 929 835 28692 _______ SUPER TIGER 3000 FUEL Best fuel Super Tiger 20004000 engines _____Supertiger3000 1290 895 845 808 725 24972 _____ 22 Model Aviation Order Form CALL OR USE THIS HANDY ORDER FORM TO SPEED YOUR ORDER FILL IN OTY ON THE LEFT THE TOTAL ON THE RIGHT Freight free qts gals No hand ling charge Freight collect drums Deduct 3% prepay Mix qty Total qty deter mines price SC orders add 5% telex tax Dealer end club prices avail Accept credit cards checks COD COD add $2 per cartonl Personal checks may held until cleared QTYFUEL1 GAL 4 GAL 24 GAL 60 GAL 128 Gal 154 GAL 1TOTAL$ ordered MIXTUREDRUMAMT RED MAX PREMIUM FUELI Thia fuel beginners ft sport flyers should use Avail synthetic castor blend RED MAX 094568563560056614300 RED MAX 5109079574572565120004 RED MAX 10129089684580872524972 ______ RED MAX 12144098392886077228192 _______ RED MAX 1515901070101091482031412 _______ RED MAX RACING FUEL Trophy winner planes boats ft cars two boat blends castor ok up 40% nIOo REDMAX2O1745124511701125102543185 REDMAX2S1990142013301264119490272 RED MAX402608193318081716153971708 REDMAXSO3163228321231973176885966 REDMAXED22202395222521231998100228 RED MAX 6533252500233022212113107404 Power easy starting power Smooth take offs power intricate maneuvers Red Max makes engine Come alive power performance YOU never expected can have power Its phone call away Power today next week next year Red Maxs secret gredients keep engine last ing longer running power fully other 100% money RED MAX FUEL Continued page 141 RED MAX DIESEL FUEL Suparior diesel back list popular demand customers Ball Bearings1767 1326 1290 1164 1060 DieselPianBearings 1867 1426 1390 1284 1160 SMOKER FLUID best smoker fluid 2 4 cycle engines Smoker Fluid1290 895 840 808 725 24972 back guaran tee com pletely sat isfied reason Red Max has power better idle better wear char acteristics _____ other fuel PLEASE PRINT CUSTOM BLENDED FUEL INGRDIENTS Grand Available type engine use Call price Mm gallon Total boata-cara-helicopters-speed-peniern-scalaY acale-kavan-ignition-st3000 NAME BOX TAEFT ITV EXPIAATIAN flATC Safety/Preston Continued page 22 Since full-time occupation involves safety childrens products can echo Reverend Vickreys observations sig nificant number accident reports daily cross desk wonder parents time incident child left alone long Which brings last subject months column Fuel explosion Two Florida modelers Clifford Hiatt Paul Gauger sent same newspaper clipping Orlando Sentinel captioned Boy Lighter Checks Toys FuelTank Ex plodes accident occurred December 16 reported newspaper Sun day December 17 article stated 11-year-old boy wasnt sure whether model airplanes fuel tank full lit disposable lighter see en gine resulting explosion boy re ceived second- third-degree burns face neck chest hands left leg reported boy supposed play model airplane unless some supervising him Paul Gauger also sent follow-up story incident appeared same newspaper following day December Continued page 144 ALL ABOUT BUILDING FLYING COVERING ENGINES AND MORE GETTING AIRBORNE VOLUME ONE has over 400 large detailed photographs includes topics lIke selecting radio radio control works learning fly instructor learning wIth instructor learn basic maneuvers like landing Other chapters explaIn about ARFs field equipment operating engines assembling airplane easy learning control Installations much Cat Number BOKOO9$1295 GETTiNG AIRBORNE JEII GETTING AIRBORNE VOLUME TWO includes topics like building strength appearance alignment New plastic film covering techniques developed experts beginner explain get nicad batteries rebuild servo engine airframe Additional installations topics shown much Cat Number BOKOIO$1295 MARRY ft MIGLEY & SONS INC p a sax 532 GLENWOOD ILL 60425 April 1990 141 GE1TING AIRBORNE VOWUE PERFECT PATTERNS Fly perfect patterns time F&Es very affordable fiberglass-and-foam pattern planes Vertigo II oldie goodie 65 span 50 fuselage 600 l wing area Designed 60 power Trike gear Kit lA-i 038 $10995 plus shipping NPhoenix V VI proven trophy-winners board renowned Don Lowe Choose 3 sizes power requirements suit own competitive needs Phoenix V 40 Kit #A-1026 $8995 Phoenix V 60 Kit #A-1027 $9995 Phoenix VI 80 Kit #A-1028 $10995 plus shipping Cure-Air aerobat anhedral 64 span 680 l wing area Special anhedral stabs make Cure-Air behave like dream t side up upside down 60 power Kit lA-i 006 $10995 plus shipping F8E kits feature precision-molded fiberglass fuselages balsa-covered foam wings reduced weight Write call FREE catalog pattern planes stand-off scale current classic warbirds trainer lodayl 1836 Stout Drive inster PA 18974 675-9882 Dler inquii invited SHORT KiTS INCLUOt STYROFOAM WING CORES CANOPIES COLNES PLANS ENGINE MOUNTS PIREWALLS MOLDED MISC PARTS SOME HARDWARE AND MATERIALS LIST FOR BALSA AND ADDITIONAL OFF THE SHELF ITEMS AMMO ZERO SR SPAN 3750 PAD TOMAHAWE 55SPAN3750P3R AIRACORRA 55SPAN3750 P510 MUSTANG 54SPAN37 50 S COOL FOLGORE SRSPAN3750YR FOCEE WOLF 1W 34 SPAN 3730 A26 INVADER 65 SPAN . SAPSr~ P3e LIGHTNING 70 SPAN . 74 95 FAA COeSAIR 56 SPAN . 44 PS11IE~ ORDRRIPdG SEND CHECK OR MONEY CR009 FOR REQUIRED ARROUNT PLES $450 PER KIT CANADIANS ADD 3750 ILEINOIS RESIDENTS ADD RVS% YAK WING Mfg 306 E Simmons Galesburg IL 61401 DUAL STRUT NICKEL PLATED NOSE GEAR H 9 Fults Tooling PO Box 95 Champaign IL 618241 Safety/Preston Continued page 141 18 stated boy play ing model airplane garage home lit disposable lighter melt fuel tube model lighter ignited fumes nearby fuel can caused explosion newspaper articles did identify model Pauls accompanying let ter said believed model question RTF ready-to-fly-7--Ed Control Line plane appears good example introduce son hobby Have safe month Radio Technique/Myers Continued page 37 overntght charger can overcharge keep putting back take out Chargers rated current de liver tong takes recharge battery So know what he/she ing Simple answer Use ammeter cut wires charger connect cut ends ammeter nor cut other wtre charger puts out 45 55 mA what get chargers come RC set would rated C/tO charging AA-sized pencell pack Typi cally such batteries will constructed cells rated between 450 550 mAh So C di vided charging current equals 450/45 50/55 sed way referred C/tO charger overnight charger will see shortly Now very same charger used charge lOO-mAH micro-pack would called what Class Thats right would C/2 charger 100/50 w plug same charger 4000-mAb D-cell what have Obviously its 4000/50 ould called C/80 charger care long time ago somebody discovered C/tO charger could left connected dis charged cell overnight cell would fully charged morning based turn printer airfoil plotter with.. 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AdAW5S2533Au CYGNET Software 24843 Del Prado #141b Dana Point CA 92629 eight-hour workday really closer nine hours long take account lunch washup couple coffee breaks So overnight charger born Overnight means something order 15 hours charging C/tO Thats overcharge modern Ni-Cds toler ate little overcharge helps ensure cells come same final voltage called leveling pack should bear mind basic assumption pack fully discharged start 15-hour re charge should also remember Ni-Cd batteries last long timebut forever tI observed charging C/to could go over weekend damaging cells somebody got busy another job found cell left connected C/tO charger long time months would show signs overcharging left connected C/SO charger would retain its charge suffering bad effects overcharging trickle charger born Battery packs must fully charged before attached trickle charger because proper trickle-charging rate fast enough make up tosses caused internal chemistry called self-discharge trickle charger puts out enough current recharge discharged pack batteries could damaged over long time overcharging Going other direction somebody got im patient After ruining few good cells found charging C/3 rate recharged cells three four hours producing signs overcharging quick charger born Some really impatient people wanted get job done no time So dump chargers invented Cells began blow up havent lived until youve seen seated D-size NiCd cell like telephone company uses ex plode like hand grenade Cells made consumer market have vents prevent such explosions connecting single Ni-Cd cell directly 12-volt battery order shock charge can have se rious consequences medical insurance Like Russian roulette get away until dont Cooler heads prevailed some complicated solutions found Internal changes geome try chemistry created fast-charge cells have spring-loaded resealable vents can recharged 15 minutes 4C price Fast-charge cells will dis charge themselves very quickly fastcharge cells will ruined severely overcharge time vent opens cell looses some electrolyte thereby losing capac ity 144 Model Aviation Farnsworth & ElroyInc
Edition: Model Aviation - 1990/04
Page Numbers: 14, 16, 18, 20, 22, 141, 144
John Preston L9 Accidentally switch ing off RC transmit tersmaybe stupid after Chil dren flying field Pro con Model fuel explosion STUPID COLUMN An overwhelming number letters Ive received read ers writer saw fit comment content column have limentary However once seem rub someone wrong way letter derogatory comments ar rives mailbox Such letter arrived last month re sponse January Safety column among other topics discussed trans mitter power switches being inadvertently turned off during flight letter Morresville PA modeler Joe McCamley following comments read column find have some good things think good bit really stupid can anybody turn off transmitter switch thinking moving trim levers Are ginners what 15 years modeling cant believe could happen Also four-strokes have never props come loose use wrench tighten prop nutsnot glow plug wrench use both wood plastic props have trouble either kind Anybody puts motor vice starts full throttle has stupid Joes letter contained PS added still like Safety Comes First column Thank Joe guess some things see fit put Safety col umn too may think somewhat stu pid However number letters Ive received people have inadver tently turned off transmitters regard stupidity part Per haps person designed transmit ter should point fingers As example such letters follow ing received Joan Dale Alyea read interest comments Andrea Belk January issue Eyelet Transmitter Homemade neck strap attaching rod gets strap hook transmitter CG better balanceand provides shield On/Off switch Less possibility accidental shut off Model Aviation regarding clear prob ability turning off transmitter acciden tally began testing Airtronics Vanguard PCM high-interference area request Cliff Weirick problem accidental shutoff first things noticed told Cliff about thing bothered us ever fact transmitter out Continued page 16 SO SLZ TO KER..1ICKt~lLLLTAKTl4EJ KID WITN ME THERE iSNT AN\TiUN- JUNO CAN ET INTcUh 14 Model Aviation column provided address Items concern regarding safety aspects model aviation actMdes Content column however opinion author does necessarily represent offidal position Academy Model Aeronautics ap Hook Nuts Threaded Ed1adedFuel Rod 7Tubing ri\_ 4 3AgLjj 2tIth D Ugly Stick designed Phil Kraft alltime favorite ready-to-fly available either 40 60 size wing tail body parts pre-covered brilliant red white black graphics ready final assembly kits con structed entirely balsa ply no foam ude motor mount spinner landing gear wheels fuel tank control rods horns hinges simple stepby-step instructions Specifications Wing span Wing area Length Weight Radio Engine Distributed Hobby Dynamics Distributors PO Box 3726 Champaign IL 61 826-3726 Phone 1-217-355-0022 60 size40 size 6052 72osqinS94sqin 4644 96oz8Ooz 4ch4ch 40-6030-45 Available hobby stores everywhere . Lqnar7Ics 4105 FIeldstone Road Champaign II 81821 NEW VHS-4 HOUR FORMAT 2 \4u1J e- tape youve \aj7 waiting finally youre new hobby just want learn secret of wood plane construction YOU PLANE VIDEO Presents BUILDING IT RIGHT THE FIRST TIME FIRST NO-NONSENSE VIDEO OF WOOD AIRCRAFT CONSTRUCTION APPROX 4 HOURS ON e Radio installation e Straight wing building e Installing hinges eshoar webbing o Applying PO cloth e Servo installation e Setting up new radio 0 Built-up tail surfaces Slab tail surfaces 0 Aileron installation 0 Fuel tank installation eNew engine setup e Fuselage construction eBUILDING STRAIGHT 0 Installing pushrods o Covering film Eliminating warps e Aligning Balancing 0 Final checkout OFLUS MUCH MORE! CREDIT CARD CUSTOMERS Use toll free number place order Have VISA MasterCard VISA ready call OR mail $2405 S & H TO PLANE VIDEO MasterCardPO Box 23128 Des Moines IA 50322 Iowa residents add 4% sales tax vsnrno .rL g 18003838251 balance Used neck strap made some extremely wild land ings Until solution found OUr solution solved both problems necessary tinker inter nal workings transmitter either also works well FUtabas easily adapted set Plus darn cheap simplify things am enclosing ar ticle fix appeared fall issue High Flight being used Airtronics transmitters around FUtabas other brands direct experience have found practically impossible turn off trans mitter reaching trims either side power switch 4-40 rod stops right see sketch Ive found helped getting used exactly trims located too Obviously rod can bent bit dif ferently use neck strap position rod directly over switch will just efficient Feel free use part article wish including drawing think will help others con cerned about switch problem well transmitter balance problem Joan Alyeas High Flight article con cerning above device states thunk up Al Couture device simple dont think necessary clude Joans assembly instructions ac companied original article Continued page 18 12 angspan ~hIer tt ernglpafl propellet dnaon N hJ Hornet Kit N Hand MadeN Ready-to-Fly AweiJUPJBalsa Wood Model Airplanes404 Interceptor YES Please RUSH Classic 3 Packs include 74 Fighter A-J Hornet & 404 Interceptor Pack $1995 plus $300 shipping & handling Add 5100 2nd-Day UPS Name _________________________ Address ______________ ____________________ CityStaieZip Send check money order A-J Manolacturing Inc 0 PO Sos 68132 APortland OR 972h5 503 653-2038 -U U U U odel Aviation 2 xsww ~uui 151521 1 U] WE21 1111 ~ i 3Zi7AA RE SHOOTING DOWN HIGH BALSA PRICES WITH SUPER QUALITY Satisfaction Guaranteed Direct Only BALSA SMUTS 36 48 30 BALSA SliCKS 3648 1162 337161409 3322 401 163810 182 431161214 3162 49332o1410 14 2 563323812 1 323 37332216 1203 37 181808 1163 37 49 31 18141116 3323 44 58 37 18381218 183 5471 46 18121024 3163 6282 553163161116 14 3 73 95 61316381720 5163 85110316122230 38 3 89124 71 14141624 12 3110155 14381926 343165181 138 1164 58 7648 14343444 9324 70 9466 1414055 18 4 80106 66516516-7128 3164 93122 75 38382737 14 4110134 84 38o123246 38 4165226139 38344255 12 4225 2613815270 12123653 MATCHED SMUTS4212 344662 332410012 15878 84os58 554865 9 642034 346790 44 3 BALSA HOT LINE Coil 806 745 6394 10am 6 pm Central Time CUSTOM CUT CONTEST BALSA Sheets Piece ed Close Tolerances AAA Grade Dried ped 100% serious modeler want performance LIGHT 4-6 LB WOOD 36 1/223 1/283 1116 3 3/2203 1/83 31183 11403 3/803 1/23 31403 13 1/164 3/3244 1/84 3/184 11404 3/804 BALSA TRIANGLES 36 42563 8 83062 3562 4574 5591 185 BALSA PLANKS36125 90158 2 57198 32 9388 4293425 1112338298 11124388119 22231135 23335157 24475189 33515285 347151/24385 TAPERED SHEETS 36 142 65 143 85 38268 38396 123120 LONE STAR EPOXY 90Ll-8 95 S 0596 15,,598 300,598 TRAILING EDGE 36 14132 51611439 3811246 2270 must try 4-6 lb balsa * NEW * Hundreds new sizes accessories finishing maerials Send #10 SASE lates catalog SPRUCE STICKS 36 48 I/B 1/81725 18 142026 18 3182232 3/163162838 14 l/43458 1/4 3/84095 1/40 124585 318 0 3/84868 3/8 1126077 12347997 SPRUCE TRIANGLES 36 3/83847 121284 343481 LflIPLY48 118x6175 1/8x12350 114x6275 114s12550 BASSWOOD48 3/163/1626 3/161/435 3/163/838 3/161/246 3/163460 1/4l/442 1/43/649 1/43480 3/803/860 3/81275 3/803490 1/21290 12 034100 BUNDLE DEALS 20-l/16336898 201/16 4361035 20332 o336865 15-3/32 436959 151/80336735 101/8436695 153/16336928 103/15436835 1014336655 1914436930 103/5336878 53/5436655 51/2335540 51/24351080 103/32446885 51/8448500 5315448688 514448840 HARD MAPLE 14 3S 3638 38 12 39 34 1 2 034 BIRCH DO WELS 18 3/s /4 516 38 IS, 40 45 50 58 68 36 09 11 14 25 32 3 PLY 3IRCH 48 1164s12835 1132x12475 1118s12475 1/8s12495 SPLYSIRCH 48 3132s12700 118x12775 3116x12025 114x12625 3j8x12725 112x12900 GROOVED LG MOUNTS 12 lahea 3/834l1 8/40 38 /32140 1/234/3/16/45 INS TANTOLUE 304 Thck298 1 o Th,298 2, TOck550 20 rsn558 LONE STAR MODELS cont 48 Handling charge pay UPS Add *300 COD *400 extra PP APO FPO 1623 57th Se Lubbock TX 79412 Stat. WeacceptVea Ma88arCard personal checksorCOD05% taxrnTexas US currencyonly MinimumWood Order*1000 6Vp Hobby Horn hobby specialtIes MIDWAY MODEL CO Old Timer Kits A/C AND FF Hobby Horn discount prices MMC FULL KITS listed Full Kits include cut parts plan strip sheet wood wire window material Kits marked ihe wire landing gear pm-bent 1936 FlyIng Quaker 84$6476 1938 Powerhouse 5O$2996 1937 Long Cabin 78$4716 1939 T Sportater SO$2996 1937 Quaker Flash 67$4556 1940 Buzzard Bombshell 50 span kit4$3596 1937 AIr Chief 61$3596 r74 ...... 7116 1 00S 0 100 GilderId Timer Sailplanemodifications s own RI1 0 P & W MODEL SERVICE Old Timer kits FF 8/C following discount price full kits full kits clude cut parts plan stick sheet wood wire windshield material 1935 MIss AmerIca 84$7196 1936 Buccaneer 84$5996 1937 DallaIre 108$7516 1938 ClIpper Mk 72$5328 1938 Kloud King 03$4238 1938 Powerhouse 84$5356 1938 Record Breaker 96$6956 1938 Trenton Terror 72$4076 1939 KordalAlake 44$1916 1939 Mercu 72$5836 1939 Zippar4 1940 Ranger 46:: .3196 1940 Sailplane 78$0476 1940 So Long 50$3036 1941 BrigIdler 56$4076 1941 Super Quaker 78$7278 1941 Playboy Jr 54$3118 1941 Playboy Sr 78$7276 1941 Brooklyn Dodoer 56$4236 82 Page 1990 CATALOGUF 00 ad 200$2 pp/lst Ciass free 01 30 add ested 1st order $250 $2001 $4500 add $325 $4501 HobbHorn $7000 add $375 0er 3 MO N ST[A] $7000 add $450 Caiif add 025% tax BOX 2212 Send MO VISNMC # &WESTMINSTEACA 92684 ExpI Check allow up 4 893-8311 30 days clearanceHours Mon-Fri 9AM 5PM checks same mail brought letter Joe MeCamley Jack McDermott following de scription solution inadvertent switching-off problem appears thing stupid solution switch design problem some models RC transmit ters recently bought Futaba 5UAF transmitter noticed switch sit ting much higher Conquestseries radio also can turned off acci dentally operate one-man machine shop part-time made switch guard radio own Several members club belong liked guard made up few have selling have seen switches shut off three times twice trimming once handing transmitter back instructor unclipping neck strap attach ment clip hit switch shut off ra dio three incidents planes taled luckily no hurt sales pitch guard agree manufacturers should redesign switch placement height radios Jacks letter included example switch guard manufactured RMC River view Machine Co one-man company rectangular plastic molding about 34 x /o provides raised barrier Continued page 20 18 Model Aviation BLUES 1CA getting down7 get protected CA mask Safety Plus mask will eliminate CA fumes epoxy polyester resin vapors air breath Lightweight easy breathing comfortable CA Mask $1595 Paint Mask $2045 See hobby dealer first doesnt have what need order direct Safety Plus PO Box 1173 Dept 12M Clinton Mississippi 39056 Call toll free 1-800-842-7233 Mississippi dial 601-924-9640 VISA MASTERCARD accepted COD add $250 shipping handling included Dealer Inquiries Invited PLU5 around switch instructions package state Help prevent accidental shutoff trimming Directions Clean surfaces apply thin coating clear rubber silicone sealant affix guard let dry 24 hrs Jack didnt state much asking switch guard guess sin cere statement letter sales pitch ever should interested purchasing guards write Riverview Ma chine Company 10 Radcliffe Dr Hudson NH 03051 Yet another solu tion acciden tal switching-off problem came Tom Cater Grand Rapids MI Toms solution something suggest radio manufacturers might want consider future produc tion transmitters simply toggle switch locks mechanically both off positions oper ate switch first have pull out switch han dle before can moved Tom included ification sheet Augat Alco switches lock ing levers Model MTL-106D single-pole double-throw switch locks both positions Tom said retrofitted transmitter such switch years ago works great also stated 'All transmitter functions used flying should have type switch Children flying field isnt often receive mail ladies response Safety column fact months column first feature letters two ladies Joan Alyea lady Arlington TX wishes remain anonymous liked letter much Im going reprint its entirety Safety column January issue Model Aviation really grabbed atten tion dont fly RC airplanes husband does problem children flying field very valid concern daughter toddler hus band mistaken notion too could supervise flying However after much discussion agreed would go flying alone would go along watch field disregard childrens safety parents lose themselves hobby just problem RCers ride horses have same complaint about mothers come ride barn leave toddlers roam unsuper vised have seen children climbing trac tors playing parked cars doors left open kids can climb go sleep exploring storage rooms contain rat bait wormers repel lents wander behind horses Just like fellow mentioned mother didnt come out fly ing field baby sit dont go out ride babysit either good conscience cant turn back kid getting trouble cause mom off riding somewhere basic mis conception applica ble both situa tions par ent primarily concerned interests wheth er flying riding Unfortunate ly safety kids becomes secon dary hazards site mini mized par ent can what wants guilt attitude Well others around wholl help keep eye Jun ior isnt anything Jun ior can get takes over un spoken reliance communal babysit ting deprives members chance enjoy hobby Plus everybody assumes somebody else watching kid sort 01 thinking leads dmwnings often wondet parents whe would never con sider leaving child home alone unattended few min utes because danger could get can ex pose unsupervised child countless new hazards flying field barn As article worst offenders fail see negligence no matter diplomatically approached least flying club has advantage vot ing implementing rules have Continued page 22 20 Model Aviation privilege go far saying No Toddlers unless accompanied nonfly ing person mandate have ac quired two warnings about kids roam ing around unsupervised fine prohibi tion bringing couple months stable policy set owners may mention anything about roaming kids fear stepping toes having paying boarders leave elsewhere dont think anyone can honestly mis understand intentions look ing after welfare children par ents have put aside common sense order temporarily pursue own interests Thank addressing problem never before occurred RCers equestrians anything common appears lack kid supervision has no limits Another interesting letter subject came Reverend Benny Vickrey Sr addition being pastor High Point NC also RC full-scale flier Reverend Vickrey began modeling 1954-55 flew Control Line age about six seven before getting RC 1974 also owned 1946 Ercoupe nine years letter stated Ill first admit 1974 1982 bothered also see children flying site knew danger also dollar damage could 1982 son born us after 13 years marriage joy have sharing him full-scale fly ing has over 600 hours air thrill last year half teaching him fly RC have satisfying anything Ive ever done life Lee Jr now seven li censed AMA member recently partici pated first contestand dont know excited dad son What Im trying say guess no children children posed danger flying site very lit tle sympathy curiosity excite ment watch planes part family As son has come along have al ways taught safety first must add responsible parent familiar hobby will keep child under constant control dont suspect either new hobby slack parents other duties too Children hope have keep ing hobby alive design ers plan makers kit producers future say parents responsible Its child being menace flying site adult brought child doesnt watch him son has respect model aircraft ra dios does lot new hightech toys Never have seen him try pick up bother anyones planes site RED MAX 4-CYCLE FUEL Eliminates detonation & kickback 4-cycle engines smoother idle ft power 104 CYCLE129089584580872524972 154 CYCLE1590 1070 101091482031412 RED MAX HELICOPTER FUEL Eirtreniely smooth running extra defoamer drk color special heavy oil helicpbs 10 Helicopter 1340 945 895 858 775 27672 15 Helicopter1640 1120 1060 964 87034112 RED MAX PERFORMANCE FUELI High flash point heavy oil uea tuned pipes ductad fan ft other heavy dty app 5 Performance114084579577570122704 _______ l0Perlormarrce 134094589585877527672 _______ iSPerformance1640 1120 106096487034112 _______ RED MAX PArrERN FUEL Proven best fuel pettern engines using pumps tuned pipe SPattarn1105810760740666120504 lOPattern130691086082374025372 _______ 15 Pattern1605 1085 1025 929 835 28692 _______ SUPER TIGER 3000 FUEL Best fuel Super Tiger 20004000 engines _____Supertiger3000 1290 895 845 808 725 24972 _____ 22 Model Aviation Order Form CALL OR USE THIS HANDY ORDER FORM TO SPEED YOUR ORDER FILL IN OTY ON THE LEFT THE TOTAL ON THE RIGHT Freight free qts gals No hand ling charge Freight collect drums Deduct 3% prepay Mix qty Total qty deter mines price SC orders add 5% telex tax Dealer end club prices avail Accept credit cards checks COD COD add $2 per cartonl Personal checks may held until cleared QTYFUEL1 GAL 4 GAL 24 GAL 60 GAL 128 Gal 154 GAL 1TOTAL$ ordered MIXTUREDRUMAMT RED MAX PREMIUM FUELI Thia fuel beginners ft sport flyers should use Avail synthetic castor blend RED MAX 094568563560056614300 RED MAX 5109079574572565120004 RED MAX 10129089684580872524972 ______ RED MAX 12144098392886077228192 _______ RED MAX 1515901070101091482031412 _______ RED MAX RACING FUEL Trophy winner planes boats ft cars two boat blends castor ok up 40% nIOo REDMAX2O1745124511701125102543185 REDMAX2S1990142013301264119490272 RED MAX402608193318081716153971708 REDMAXSO3163228321231973176885966 REDMAXED22202395222521231998100228 RED MAX 6533252500233022212113107404 Power easy starting power Smooth take offs power intricate maneuvers Red Max makes engine Come alive power performance YOU never expected can have power Its phone call away Power today next week next year Red Maxs secret gredients keep engine last ing longer running power fully other 100% money RED MAX FUEL Continued page 141 RED MAX DIESEL FUEL Suparior diesel back list popular demand customers Ball Bearings1767 1326 1290 1164 1060 DieselPianBearings 1867 1426 1390 1284 1160 SMOKER FLUID best smoker fluid 2 4 cycle engines Smoker Fluid1290 895 840 808 725 24972 back guaran tee com pletely sat isfied reason Red Max has power better idle better wear char acteristics _____ other fuel PLEASE PRINT CUSTOM BLENDED FUEL INGRDIENTS Grand Available type engine use Call price Mm gallon Total boata-cara-helicopters-speed-peniern-scalaY acale-kavan-ignition-st3000 NAME BOX TAEFT ITV EXPIAATIAN flATC Safety/Preston Continued page 22 Since full-time occupation involves safety childrens products can echo Reverend Vickreys observations sig nificant number accident reports daily cross desk wonder parents time incident child left alone long Which brings last subject months column Fuel explosion Two Florida modelers Clifford Hiatt Paul Gauger sent same newspaper clipping Orlando Sentinel captioned Boy Lighter Checks Toys FuelTank Ex plodes accident occurred December 16 reported newspaper Sun day December 17 article stated 11-year-old boy wasnt sure whether model airplanes fuel tank full lit disposable lighter see en gine resulting explosion boy re ceived second- third-degree burns face neck chest hands left leg reported boy supposed play model airplane unless some supervising him Paul Gauger also sent follow-up story incident appeared same newspaper following day December Continued page 144 ALL ABOUT BUILDING FLYING COVERING ENGINES AND MORE GETTING AIRBORNE VOLUME ONE has over 400 large detailed photographs includes topics lIke selecting radio radio control works learning fly instructor learning wIth instructor learn basic maneuvers like landing Other chapters explaIn about ARFs field equipment operating engines assembling airplane easy learning control Installations much Cat Number BOKOO9$1295 GETTiNG AIRBORNE JEII GETTING AIRBORNE VOLUME TWO includes topics like building strength appearance alignment New plastic film covering techniques developed experts beginner explain get nicad batteries rebuild servo engine airframe Additional installations topics shown much Cat Number BOKOIO$1295 MARRY ft MIGLEY & SONS INC p a sax 532 GLENWOOD ILL 60425 April 1990 141 GE1TING AIRBORNE VOWUE PERFECT PATTERNS Fly perfect patterns time F&Es very affordable fiberglass-and-foam pattern planes Vertigo II oldie goodie 65 span 50 fuselage 600 l wing area Designed 60 power Trike gear Kit lA-i 038 $10995 plus shipping NPhoenix V VI proven trophy-winners board renowned Don Lowe Choose 3 sizes power requirements suit own competitive needs Phoenix V 40 Kit #A-1026 $8995 Phoenix V 60 Kit #A-1027 $9995 Phoenix VI 80 Kit #A-1028 $10995 plus shipping Cure-Air aerobat anhedral 64 span 680 l wing area Special anhedral stabs make Cure-Air behave like dream t side up upside down 60 power Kit lA-i 006 $10995 plus shipping F8E kits feature precision-molded fiberglass fuselages balsa-covered foam wings reduced weight Write call FREE catalog pattern planes stand-off scale current classic warbirds trainer lodayl 1836 Stout Drive inster PA 18974 675-9882 Dler inquii invited SHORT KiTS INCLUOt STYROFOAM WING CORES CANOPIES COLNES PLANS ENGINE MOUNTS PIREWALLS MOLDED MISC PARTS SOME HARDWARE AND MATERIALS LIST FOR BALSA AND ADDITIONAL OFF THE SHELF ITEMS AMMO ZERO SR SPAN 3750 PAD TOMAHAWE 55SPAN3750P3R AIRACORRA 55SPAN3750 P510 MUSTANG 54SPAN37 50 S COOL FOLGORE SRSPAN3750YR FOCEE WOLF 1W 34 SPAN 3730 A26 INVADER 65 SPAN . SAPSr~ P3e LIGHTNING 70 SPAN . 74 95 FAA COeSAIR 56 SPAN . 44 PS11IE~ ORDRRIPdG SEND CHECK OR MONEY CR009 FOR REQUIRED ARROUNT PLES $450 PER KIT CANADIANS ADD 3750 ILEINOIS RESIDENTS ADD RVS% YAK WING Mfg 306 E Simmons Galesburg IL 61401 DUAL STRUT NICKEL PLATED NOSE GEAR H 9 Fults Tooling PO Box 95 Champaign IL 618241 Safety/Preston Continued page 141 18 stated boy play ing model airplane garage home lit disposable lighter melt fuel tube model lighter ignited fumes nearby fuel can caused explosion newspaper articles did identify model Pauls accompanying let ter said believed model question RTF ready-to-fly-7--Ed Control Line plane appears good example introduce son hobby Have safe month Radio Technique/Myers Continued page 37 overntght charger can overcharge keep putting back take out Chargers rated current de liver tong takes recharge battery So know what he/she ing Simple answer Use ammeter cut wires charger connect cut ends ammeter nor cut other wtre charger puts out 45 55 mA what get chargers come RC set would rated C/tO charging AA-sized pencell pack Typi cally such batteries will constructed cells rated between 450 550 mAh So C di vided charging current equals 450/45 50/55 sed way referred C/tO charger overnight charger will see shortly Now very same charger used charge lOO-mAH micro-pack would called what Class Thats right would C/2 charger 100/50 w plug same charger 4000-mAb D-cell what have Obviously its 4000/50 ould called C/80 charger care long time ago somebody discovered C/tO charger could left connected dis charged cell overnight cell would fully charged morning based turn printer airfoil plotter with.. 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AdAW5S2533Au CYGNET Software 24843 Del Prado #141b Dana Point CA 92629 eight-hour workday really closer nine hours long take account lunch washup couple coffee breaks So overnight charger born Overnight means something order 15 hours charging C/tO Thats overcharge modern Ni-Cds toler ate little overcharge helps ensure cells come same final voltage called leveling pack should bear mind basic assumption pack fully discharged start 15-hour re charge should also remember Ni-Cd batteries last long timebut forever tI observed charging C/to could go over weekend damaging cells somebody got busy another job found cell left connected C/tO charger long time months would show signs overcharging left connected C/SO charger would retain its charge suffering bad effects overcharging trickle charger born Battery packs must fully charged before attached trickle charger because proper trickle-charging rate fast enough make up tosses caused internal chemistry called self-discharge trickle charger puts out enough current recharge discharged pack batteries could damaged over long time overcharging Going other direction somebody got im patient After ruining few good cells found charging C/3 rate recharged cells three four hours producing signs overcharging quick charger born Some really impatient people wanted get job done no time So dump chargers invented Cells began blow up havent lived until youve seen seated D-size NiCd cell like telephone company uses ex plode like hand grenade Cells made consumer market have vents prevent such explosions connecting single Ni-Cd cell directly 12-volt battery order shock charge can have se rious consequences medical insurance Like Russian roulette get away until dont Cooler heads prevailed some complicated solutions found Internal changes geome try chemistry created fast-charge cells have spring-loaded resealable vents can recharged 15 minutes 4C price Fast-charge cells will dis charge themselves very quickly fastcharge cells will ruined severely overcharge time vent opens cell looses some electrolyte thereby losing capac ity 144 Model Aviation Farnsworth & ElroyInc
Edition: Model Aviation - 1990/04
Page Numbers: 14, 16, 18, 20, 22, 141, 144
John Preston L9 Accidentally switch ing off RC transmit tersmaybe stupid after Chil dren flying field Pro con Model fuel explosion STUPID COLUMN An overwhelming number letters Ive received read ers writer saw fit comment content column have limentary However once seem rub someone wrong way letter derogatory comments ar rives mailbox Such letter arrived last month re sponse January Safety column among other topics discussed trans mitter power switches being inadvertently turned off during flight letter Morresville PA modeler Joe McCamley following comments read column find have some good things think good bit really stupid can anybody turn off transmitter switch thinking moving trim levers Are ginners what 15 years modeling cant believe could happen Also four-strokes have never props come loose use wrench tighten prop nutsnot glow plug wrench use both wood plastic props have trouble either kind Anybody puts motor vice starts full throttle has stupid Joes letter contained PS added still like Safety Comes First column Thank Joe guess some things see fit put Safety col umn too may think somewhat stu pid However number letters Ive received people have inadver tently turned off transmitters regard stupidity part Per haps person designed transmit ter should point fingers As example such letters follow ing received Joan Dale Alyea read interest comments Andrea Belk January issue Eyelet Transmitter Homemade neck strap attaching rod gets strap hook transmitter CG better balanceand provides shield On/Off switch Less possibility accidental shut off Model Aviation regarding clear prob ability turning off transmitter acciden tally began testing Airtronics Vanguard PCM high-interference area request Cliff Weirick problem accidental shutoff first things noticed told Cliff about thing bothered us ever fact transmitter out Continued page 16 SO SLZ TO KER..1ICKt~lLLLTAKTl4EJ KID WITN ME THERE iSNT AN\TiUN- JUNO CAN ET INTcUh 14 Model Aviation column provided address Items concern regarding safety aspects model aviation actMdes Content column however opinion author does necessarily represent offidal position Academy Model Aeronautics ap Hook Nuts Threaded Ed1adedFuel Rod 7Tubing ri\_ 4 3AgLjj 2tIth D Ugly Stick designed Phil Kraft alltime favorite ready-to-fly available either 40 60 size wing tail body parts pre-covered brilliant red white black graphics ready final assembly kits con structed entirely balsa ply no foam ude motor mount spinner landing gear wheels fuel tank control rods horns hinges simple stepby-step instructions Specifications Wing span Wing area Length Weight Radio Engine Distributed Hobby Dynamics Distributors PO Box 3726 Champaign IL 61 826-3726 Phone 1-217-355-0022 60 size40 size 6052 72osqinS94sqin 4644 96oz8Ooz 4ch4ch 40-6030-45 Available hobby stores everywhere . Lqnar7Ics 4105 FIeldstone Road Champaign II 81821 NEW VHS-4 HOUR FORMAT 2 \4u1J e- tape youve \aj7 waiting finally youre new hobby just want learn secret of wood plane construction YOU PLANE VIDEO Presents BUILDING IT RIGHT THE FIRST TIME FIRST NO-NONSENSE VIDEO OF WOOD AIRCRAFT CONSTRUCTION APPROX 4 HOURS ON e Radio installation e Straight wing building e Installing hinges eshoar webbing o Applying PO cloth e Servo installation e Setting up new radio 0 Built-up tail surfaces Slab tail surfaces 0 Aileron installation 0 Fuel tank installation eNew engine setup e Fuselage construction eBUILDING STRAIGHT 0 Installing pushrods o Covering film Eliminating warps e Aligning Balancing 0 Final checkout OFLUS MUCH MORE! CREDIT CARD CUSTOMERS Use toll free number place order Have VISA MasterCard VISA ready call OR mail $2405 S & H TO PLANE VIDEO MasterCardPO Box 23128 Des Moines IA 50322 Iowa residents add 4% sales tax vsnrno .rL g 18003838251 balance Used neck strap made some extremely wild land ings Until solution found OUr solution solved both problems necessary tinker inter nal workings transmitter either also works well FUtabas easily adapted set Plus darn cheap simplify things am enclosing ar ticle fix appeared fall issue High Flight being used Airtronics transmitters around FUtabas other brands direct experience have found practically impossible turn off trans mitter reaching trims either side power switch 4-40 rod stops right see sketch Ive found helped getting used exactly trims located too Obviously rod can bent bit dif ferently use neck strap position rod directly over switch will just efficient Feel free use part article wish including drawing think will help others con cerned about switch problem well transmitter balance problem Joan Alyeas High Flight article con cerning above device states thunk up Al Couture device simple dont think necessary clude Joans assembly instructions ac companied original article Continued page 18 12 angspan ~hIer tt ernglpafl propellet dnaon N hJ Hornet Kit N Hand MadeN Ready-to-Fly AweiJUPJBalsa Wood Model Airplanes404 Interceptor YES Please RUSH Classic 3 Packs include 74 Fighter A-J Hornet & 404 Interceptor Pack $1995 plus $300 shipping & handling Add 5100 2nd-Day UPS Name _________________________ Address ______________ ____________________ CityStaieZip Send check money order A-J Manolacturing Inc 0 PO Sos 68132 APortland OR 972h5 503 653-2038 -U U U U odel Aviation 2 xsww ~uui 151521 1 U] WE21 1111 ~ i 3Zi7AA RE SHOOTING DOWN HIGH BALSA PRICES WITH SUPER QUALITY Satisfaction Guaranteed Direct Only BALSA SMUTS 36 48 30 BALSA SliCKS 3648 1162 337161409 3322 401 163810 182 431161214 3162 49332o1410 14 2 563323812 1 323 37332216 1203 37 181808 1163 37 49 31 18141116 3323 44 58 37 18381218 183 5471 46 18121024 3163 6282 553163161116 14 3 73 95 61316381720 5163 85110316122230 38 3 89124 71 14141624 12 3110155 14381926 343165181 138 1164 58 7648 14343444 9324 70 9466 1414055 18 4 80106 66516516-7128 3164 93122 75 38382737 14 4110134 84 38o123246 38 4165226139 38344255 12 4225 2613815270 12123653 MATCHED SMUTS4212 344662 332410012 15878 84os58 554865 9 642034 346790 44 3 BALSA HOT LINE Coil 806 745 6394 10am 6 pm Central Time CUSTOM CUT CONTEST BALSA Sheets Piece ed Close Tolerances AAA Grade Dried ped 100% serious modeler want performance LIGHT 4-6 LB WOOD 36 1/223 1/283 1116 3 3/2203 1/83 31183 11403 3/803 1/23 31403 13 1/164 3/3244 1/84 3/184 11404 3/804 BALSA TRIANGLES 36 42563 8 83062 3562 4574 5591 185 BALSA PLANKS36125 90158 2 57198 32 9388 4293425 1112338298 11124388119 22231135 23335157 24475189 33515285 347151/24385 TAPERED SHEETS 36 142 65 143 85 38268 38396 123120 LONE STAR EPOXY 90Ll-8 95 S 0596 15,,598 300,598 TRAILING EDGE 36 14132 51611439 3811246 2270 must try 4-6 lb balsa * NEW * Hundreds new sizes accessories finishing maerials Send #10 SASE lates catalog SPRUCE STICKS 36 48 I/B 1/81725 18 142026 18 3182232 3/163162838 14 l/43458 1/4 3/84095 1/40 124585 318 0 3/84868 3/8 1126077 12347997 SPRUCE TRIANGLES 36 3/83847 121284 343481 LflIPLY48 118x6175 1/8x12350 114x6275 114s12550 BASSWOOD48 3/163/1626 3/161/435 3/163/838 3/161/246 3/163460 1/4l/442 1/43/649 1/43480 3/803/860 3/81275 3/803490 1/21290 12 034100 BUNDLE DEALS 20-l/16336898 201/16 4361035 20332 o336865 15-3/32 436959 151/80336735 101/8436695 153/16336928 103/15436835 1014336655 1914436930 103/5336878 53/5436655 51/2335540 51/24351080 103/32446885 51/8448500 5315448688 514448840 HARD MAPLE 14 3S 3638 38 12 39 34 1 2 034 BIRCH DO WELS 18 3/s /4 516 38 IS, 40 45 50 58 68 36 09 11 14 25 32 3 PLY 3IRCH 48 1164s12835 1132x12475 1118s12475 1/8s12495 SPLYSIRCH 48 3132s12700 118x12775 3116x12025 114x12625 3j8x12725 112x12900 GROOVED LG MOUNTS 12 lahea 3/834l1 8/40 38 /32140 1/234/3/16/45 INS TANTOLUE 304 Thck298 1 o Th,298 2, TOck550 20 rsn558 LONE STAR MODELS cont 48 Handling charge pay UPS Add *300 COD *400 extra PP APO FPO 1623 57th Se Lubbock TX 79412 Stat. WeacceptVea Ma88arCard personal checksorCOD05% taxrnTexas US currencyonly MinimumWood Order*1000 6Vp Hobby Horn hobby specialtIes MIDWAY MODEL CO Old Timer Kits A/C AND FF Hobby Horn discount prices MMC FULL KITS listed Full Kits include cut parts plan strip sheet wood wire window material Kits marked ihe wire landing gear pm-bent 1936 FlyIng Quaker 84$6476 1938 Powerhouse 5O$2996 1937 Long Cabin 78$4716 1939 T Sportater SO$2996 1937 Quaker Flash 67$4556 1940 Buzzard Bombshell 50 span kit4$3596 1937 AIr Chief 61$3596 r74 ...... 7116 1 00S 0 100 GilderId Timer Sailplanemodifications s own RI1 0 P & W MODEL SERVICE Old Timer kits FF 8/C following discount price full kits full kits clude cut parts plan stick sheet wood wire windshield material 1935 MIss AmerIca 84$7196 1936 Buccaneer 84$5996 1937 DallaIre 108$7516 1938 ClIpper Mk 72$5328 1938 Kloud King 03$4238 1938 Powerhouse 84$5356 1938 Record Breaker 96$6956 1938 Trenton Terror 72$4076 1939 KordalAlake 44$1916 1939 Mercu 72$5836 1939 Zippar4 1940 Ranger 46:: .3196 1940 Sailplane 78$0476 1940 So Long 50$3036 1941 BrigIdler 56$4076 1941 Super Quaker 78$7278 1941 Playboy Jr 54$3118 1941 Playboy Sr 78$7276 1941 Brooklyn Dodoer 56$4236 82 Page 1990 CATALOGUF 00 ad 200$2 pp/lst Ciass free 01 30 add ested 1st order $250 $2001 $4500 add $325 $4501 HobbHorn $7000 add $375 0er 3 MO N ST[A] $7000 add $450 Caiif add 025% tax BOX 2212 Send MO VISNMC # &WESTMINSTEACA 92684 ExpI Check allow up 4 893-8311 30 days clearanceHours Mon-Fri 9AM 5PM checks same mail brought letter Joe MeCamley Jack McDermott following de scription solution inadvertent switching-off problem appears thing stupid solution switch design problem some models RC transmit ters recently bought Futaba 5UAF transmitter noticed switch sit ting much higher Conquestseries radio also can turned off acci dentally operate one-man machine shop part-time made switch guard radio own Several members club belong liked guard made up few have selling have seen switches shut off three times twice trimming once handing transmitter back instructor unclipping neck strap attach ment clip hit switch shut off ra dio three incidents planes taled luckily no hurt sales pitch guard agree manufacturers should redesign switch placement height radios Jacks letter included example switch guard manufactured RMC River view Machine Co one-man company rectangular plastic molding about 34 x /o provides raised barrier Continued page 20 18 Model Aviation BLUES 1CA getting down7 get protected CA mask Safety Plus mask will eliminate CA fumes epoxy polyester resin vapors air breath Lightweight easy breathing comfortable CA Mask $1595 Paint Mask $2045 See hobby dealer first doesnt have what need order direct Safety Plus PO Box 1173 Dept 12M Clinton Mississippi 39056 Call toll free 1-800-842-7233 Mississippi dial 601-924-9640 VISA MASTERCARD accepted COD add $250 shipping handling included Dealer Inquiries Invited PLU5 around switch instructions package state Help prevent accidental shutoff trimming Directions Clean surfaces apply thin coating clear rubber silicone sealant affix guard let dry 24 hrs Jack didnt state much asking switch guard guess sin cere statement letter sales pitch ever should interested purchasing guards write Riverview Ma chine Company 10 Radcliffe Dr Hudson NH 03051 Yet another solu tion acciden tal switching-off problem came Tom Cater Grand Rapids MI Toms solution something suggest radio manufacturers might want consider future produc tion transmitters simply toggle switch locks mechanically both off positions oper ate switch first have pull out switch han dle before can moved Tom included ification sheet Augat Alco switches lock ing levers Model MTL-106D single-pole double-throw switch locks both positions Tom said retrofitted transmitter such switch years ago works great also stated 'All transmitter functions used flying should have type switch Children flying field isnt often receive mail ladies response Safety column fact months column first feature letters two ladies Joan Alyea lady Arlington TX wishes remain anonymous liked letter much Im going reprint its entirety Safety column January issue Model Aviation really grabbed atten tion dont fly RC airplanes husband does problem children flying field very valid concern daughter toddler hus band mistaken notion too could supervise flying However after much discussion agreed would go flying alone would go along watch field disregard childrens safety parents lose themselves hobby just problem RCers ride horses have same complaint about mothers come ride barn leave toddlers roam unsuper vised have seen children climbing trac tors playing parked cars doors left open kids can climb go sleep exploring storage rooms contain rat bait wormers repel lents wander behind horses Just like fellow mentioned mother didnt come out fly ing field baby sit dont go out ride babysit either good conscience cant turn back kid getting trouble cause mom off riding somewhere basic mis conception applica ble both situa tions par ent primarily concerned interests wheth er flying riding Unfortunate ly safety kids becomes secon dary hazards site mini mized par ent can what wants guilt attitude Well others around wholl help keep eye Jun ior isnt anything Jun ior can get takes over un spoken reliance communal babysit ting deprives members chance enjoy hobby Plus everybody assumes somebody else watching kid sort 01 thinking leads dmwnings often wondet parents whe would never con sider leaving child home alone unattended few min utes because danger could get can ex pose unsupervised child countless new hazards flying field barn As article worst offenders fail see negligence no matter diplomatically approached least flying club has advantage vot ing implementing rules have Continued page 22 20 Model Aviation privilege go far saying No Toddlers unless accompanied nonfly ing person mandate have ac quired two warnings about kids roam ing around unsupervised fine prohibi tion bringing couple months stable policy set owners may mention anything about roaming kids fear stepping toes having paying boarders leave elsewhere dont think anyone can honestly mis understand intentions look ing after welfare children par ents have put aside common sense order temporarily pursue own interests Thank addressing problem never before occurred RCers equestrians anything common appears lack kid supervision has no limits Another interesting letter subject came Reverend Benny Vickrey Sr addition being pastor High Point NC also RC full-scale flier Reverend Vickrey began modeling 1954-55 flew Control Line age about six seven before getting RC 1974 also owned 1946 Ercoupe nine years letter stated Ill first admit 1974 1982 bothered also see children flying site knew danger also dollar damage could 1982 son born us after 13 years marriage joy have sharing him full-scale fly ing has over 600 hours air thrill last year half teaching him fly RC have satisfying anything Ive ever done life Lee Jr now seven li censed AMA member recently partici pated first contestand dont know excited dad son What Im trying say guess no children children posed danger flying site very lit tle sympathy curiosity excite ment watch planes part family As son has come along have al ways taught safety first must add responsible parent familiar hobby will keep child under constant control dont suspect either new hobby slack parents other duties too Children hope have keep ing hobby alive design ers plan makers kit producers future say parents responsible Its child being menace flying site adult brought child doesnt watch him son has respect model aircraft ra dios does lot new hightech toys Never have seen him try pick up bother anyones planes site RED MAX 4-CYCLE FUEL Eliminates detonation & kickback 4-cycle engines smoother idle ft power 104 CYCLE129089584580872524972 154 CYCLE1590 1070 101091482031412 RED MAX HELICOPTER FUEL Eirtreniely smooth running extra defoamer drk color special heavy oil helicpbs 10 Helicopter 1340 945 895 858 775 27672 15 Helicopter1640 1120 1060 964 87034112 RED MAX PERFORMANCE FUELI High flash point heavy oil uea tuned pipes ductad fan ft other heavy dty app 5 Performance114084579577570122704 _______ l0Perlormarrce 134094589585877527672 _______ iSPerformance1640 1120 106096487034112 _______ RED MAX PArrERN FUEL Proven best fuel pettern engines using pumps tuned pipe SPattarn1105810760740666120504 lOPattern130691086082374025372 _______ 15 Pattern1605 1085 1025 929 835 28692 _______ SUPER TIGER 3000 FUEL Best fuel Super Tiger 20004000 engines _____Supertiger3000 1290 895 845 808 725 24972 _____ 22 Model Aviation Order Form CALL OR USE THIS HANDY ORDER FORM TO SPEED YOUR ORDER FILL IN OTY ON THE LEFT THE TOTAL ON THE RIGHT Freight free qts gals No hand ling charge Freight collect drums Deduct 3% prepay Mix qty Total qty deter mines price SC orders add 5% telex tax Dealer end club prices avail Accept credit cards checks COD COD add $2 per cartonl Personal checks may held until cleared QTYFUEL1 GAL 4 GAL 24 GAL 60 GAL 128 Gal 154 GAL 1TOTAL$ ordered MIXTUREDRUMAMT RED MAX PREMIUM FUELI Thia fuel beginners ft sport flyers should use Avail synthetic castor blend RED MAX 094568563560056614300 RED MAX 5109079574572565120004 RED MAX 10129089684580872524972 ______ RED MAX 12144098392886077228192 _______ RED MAX 1515901070101091482031412 _______ RED MAX RACING FUEL Trophy winner planes boats ft cars two boat blends castor ok up 40% nIOo REDMAX2O1745124511701125102543185 REDMAX2S1990142013301264119490272 RED MAX402608193318081716153971708 REDMAXSO3163228321231973176885966 REDMAXED22202395222521231998100228 RED MAX 6533252500233022212113107404 Power easy starting power Smooth take offs power intricate maneuvers Red Max makes engine Come alive power performance YOU never expected can have power Its phone call away Power today next week next year Red Maxs secret gredients keep engine last ing longer running power fully other 100% money RED MAX FUEL Continued page 141 RED MAX DIESEL FUEL Suparior diesel back list popular demand customers Ball Bearings1767 1326 1290 1164 1060 DieselPianBearings 1867 1426 1390 1284 1160 SMOKER FLUID best smoker fluid 2 4 cycle engines Smoker Fluid1290 895 840 808 725 24972 back guaran tee com pletely sat isfied reason Red Max has power better idle better wear char acteristics _____ other fuel PLEASE PRINT CUSTOM BLENDED FUEL INGRDIENTS Grand Available type engine use Call price Mm gallon Total boata-cara-helicopters-speed-peniern-scalaY acale-kavan-ignition-st3000 NAME BOX TAEFT ITV EXPIAATIAN flATC Safety/Preston Continued page 22 Since full-time occupation involves safety childrens products can echo Reverend Vickreys observations sig nificant number accident reports daily cross desk wonder parents time incident child left alone long Which brings last subject months column Fuel explosion Two Florida modelers Clifford Hiatt Paul Gauger sent same newspaper clipping Orlando Sentinel captioned Boy Lighter Checks Toys FuelTank Ex plodes accident occurred December 16 reported newspaper Sun day December 17 article stated 11-year-old boy wasnt sure whether model airplanes fuel tank full lit disposable lighter see en gine resulting explosion boy re ceived second- third-degree burns face neck chest hands left leg reported boy supposed play model airplane unless some supervising him Paul Gauger also sent follow-up story incident appeared same newspaper following day December Continued page 144 ALL ABOUT BUILDING FLYING COVERING ENGINES AND MORE GETTING AIRBORNE VOLUME ONE has over 400 large detailed photographs includes topics lIke selecting radio radio control works learning fly instructor learning wIth instructor learn basic maneuvers like landing Other chapters explaIn about ARFs field equipment operating engines assembling airplane easy learning control Installations much Cat Number BOKOO9$1295 GETTiNG AIRBORNE JEII GETTING AIRBORNE VOLUME TWO includes topics like building strength appearance alignment New plastic film covering techniques developed experts beginner explain get nicad batteries rebuild servo engine airframe Additional installations topics shown much Cat Number BOKOIO$1295 MARRY ft MIGLEY & SONS INC p a sax 532 GLENWOOD ILL 60425 April 1990 141 GE1TING AIRBORNE VOWUE PERFECT PATTERNS Fly perfect patterns time F&Es very affordable fiberglass-and-foam pattern planes Vertigo II oldie goodie 65 span 50 fuselage 600 l wing area Designed 60 power Trike gear Kit lA-i 038 $10995 plus shipping NPhoenix V VI proven trophy-winners board renowned Don Lowe Choose 3 sizes power requirements suit own competitive needs Phoenix V 40 Kit #A-1026 $8995 Phoenix V 60 Kit #A-1027 $9995 Phoenix VI 80 Kit #A-1028 $10995 plus shipping Cure-Air aerobat anhedral 64 span 680 l wing area Special anhedral stabs make Cure-Air behave like dream t side up upside down 60 power Kit lA-i 006 $10995 plus shipping F8E kits feature precision-molded fiberglass fuselages balsa-covered foam wings reduced weight Write call FREE catalog pattern planes stand-off scale current classic warbirds trainer lodayl 1836 Stout Drive inster PA 18974 675-9882 Dler inquii invited SHORT KiTS INCLUOt STYROFOAM WING CORES CANOPIES COLNES PLANS ENGINE MOUNTS PIREWALLS MOLDED MISC PARTS SOME HARDWARE AND MATERIALS LIST FOR BALSA AND ADDITIONAL OFF THE SHELF ITEMS AMMO ZERO SR SPAN 3750 PAD TOMAHAWE 55SPAN3750P3R AIRACORRA 55SPAN3750 P510 MUSTANG 54SPAN37 50 S COOL FOLGORE SRSPAN3750YR FOCEE WOLF 1W 34 SPAN 3730 A26 INVADER 65 SPAN . SAPSr~ P3e LIGHTNING 70 SPAN . 74 95 FAA COeSAIR 56 SPAN . 44 PS11IE~ ORDRRIPdG SEND CHECK OR MONEY CR009 FOR REQUIRED ARROUNT PLES $450 PER KIT CANADIANS ADD 3750 ILEINOIS RESIDENTS ADD RVS% YAK WING Mfg 306 E Simmons Galesburg IL 61401 DUAL STRUT NICKEL PLATED NOSE GEAR H 9 Fults Tooling PO Box 95 Champaign IL 618241 Safety/Preston Continued page 141 18 stated boy play ing model airplane garage home lit disposable lighter melt fuel tube model lighter ignited fumes nearby fuel can caused explosion newspaper articles did identify model Pauls accompanying let ter said believed model question RTF ready-to-fly-7--Ed Control Line plane appears good example introduce son hobby Have safe month Radio Technique/Myers Continued page 37 overntght charger can overcharge keep putting back take out Chargers rated current de liver tong takes recharge battery So know what he/she ing Simple answer Use ammeter cut wires charger connect cut ends ammeter nor cut other wtre charger puts out 45 55 mA what get chargers come RC set would rated C/tO charging AA-sized pencell pack Typi cally such batteries will constructed cells rated between 450 550 mAh So C di vided charging current equals 450/45 50/55 sed way referred C/tO charger overnight charger will see shortly Now very same charger used charge lOO-mAH micro-pack would called what Class Thats right would C/2 charger 100/50 w plug same charger 4000-mAb D-cell what have Obviously its 4000/50 ould called C/80 charger care long time ago somebody discovered C/tO charger could left connected dis charged cell overnight cell would fully charged morning based turn printer airfoil plotter with.. 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AdAW5S2533Au CYGNET Software 24843 Del Prado #141b Dana Point CA 92629 eight-hour workday really closer nine hours long take account lunch washup couple coffee breaks So overnight charger born Overnight means something order 15 hours charging C/tO Thats overcharge modern Ni-Cds toler ate little overcharge helps ensure cells come same final voltage called leveling pack should bear mind basic assumption pack fully discharged start 15-hour re charge should also remember Ni-Cd batteries last long timebut forever tI observed charging C/to could go over weekend damaging cells somebody got busy another job found cell left connected C/tO charger long time months would show signs overcharging left connected C/SO charger would retain its charge suffering bad effects overcharging trickle charger born Battery packs must fully charged before attached trickle charger because proper trickle-charging rate fast enough make up tosses caused internal chemistry called self-discharge trickle charger puts out enough current recharge discharged pack batteries could damaged over long time overcharging Going other direction somebody got im patient After ruining few good cells found charging C/3 rate recharged cells three four hours producing signs overcharging quick charger born Some really impatient people wanted get job done no time So dump chargers invented Cells began blow up havent lived until youve seen seated D-size NiCd cell like telephone company uses ex plode like hand grenade Cells made consumer market have vents prevent such explosions connecting single Ni-Cd cell directly 12-volt battery order shock charge can have se rious consequences medical insurance Like Russian roulette get away until dont Cooler heads prevailed some complicated solutions found Internal changes geome try chemistry created fast-charge cells have spring-loaded resealable vents can recharged 15 minutes 4C price Fast-charge cells will dis charge themselves very quickly fastcharge cells will ruined severely overcharge time vent opens cell looses some electrolyte thereby losing capac ity 144 Model Aviation Farnsworth & ElroyInc
Edition: Model Aviation - 1990/04
Page Numbers: 14, 16, 18, 20, 22, 141, 144
John Preston L9 Accidentally switch ing off RC transmit tersmaybe stupid after Chil dren flying field Pro con Model fuel explosion STUPID COLUMN An overwhelming number letters Ive received read ers writer saw fit comment content column have limentary However once seem rub someone wrong way letter derogatory comments ar rives mailbox Such letter arrived last month re sponse January Safety column among other topics discussed trans mitter power switches being inadvertently turned off during flight letter Morresville PA modeler Joe McCamley following comments read column find have some good things think good bit really stupid can anybody turn off transmitter switch thinking moving trim levers Are ginners what 15 years modeling cant believe could happen Also four-strokes have never props come loose use wrench tighten prop nutsnot glow plug wrench use both wood plastic props have trouble either kind Anybody puts motor vice starts full throttle has stupid Joes letter contained PS added still like Safety Comes First column Thank Joe guess some things see fit put Safety col umn too may think somewhat stu pid However number letters Ive received people have inadver tently turned off transmitters regard stupidity part Per haps person designed transmit ter should point fingers As example such letters follow ing received Joan Dale Alyea read interest comments Andrea Belk January issue Eyelet Transmitter Homemade neck strap attaching rod gets strap hook transmitter CG better balanceand provides shield On/Off switch Less possibility accidental shut off Model Aviation regarding clear prob ability turning off transmitter acciden tally began testing Airtronics Vanguard PCM high-interference area request Cliff Weirick problem accidental shutoff first things noticed told Cliff about thing bothered us ever fact transmitter out Continued page 16 SO SLZ TO KER..1ICKt~lLLLTAKTl4EJ KID WITN ME THERE iSNT AN\TiUN- JUNO CAN ET INTcUh 14 Model Aviation column provided address Items concern regarding safety aspects model aviation actMdes Content column however opinion author does necessarily represent offidal position Academy Model Aeronautics ap Hook Nuts Threaded Ed1adedFuel Rod 7Tubing ri\_ 4 3AgLjj 2tIth D Ugly Stick designed Phil Kraft alltime favorite ready-to-fly available either 40 60 size wing tail body parts pre-covered brilliant red white black graphics ready final assembly kits con structed entirely balsa ply no foam ude motor mount spinner landing gear wheels fuel tank control rods horns hinges simple stepby-step instructions Specifications Wing span Wing area Length Weight Radio Engine Distributed Hobby Dynamics Distributors PO Box 3726 Champaign IL 61 826-3726 Phone 1-217-355-0022 60 size40 size 6052 72osqinS94sqin 4644 96oz8Ooz 4ch4ch 40-6030-45 Available hobby stores everywhere . Lqnar7Ics 4105 FIeldstone Road Champaign II 81821 NEW VHS-4 HOUR FORMAT 2 \4u1J e- tape youve \aj7 waiting finally youre new hobby just want learn secret of wood plane construction YOU PLANE VIDEO Presents BUILDING IT RIGHT THE FIRST TIME FIRST NO-NONSENSE VIDEO OF WOOD AIRCRAFT CONSTRUCTION APPROX 4 HOURS ON e Radio installation e Straight wing building e Installing hinges eshoar webbing o Applying PO cloth e Servo installation e Setting up new radio 0 Built-up tail surfaces Slab tail surfaces 0 Aileron installation 0 Fuel tank installation eNew engine setup e Fuselage construction eBUILDING STRAIGHT 0 Installing pushrods o Covering film Eliminating warps e Aligning Balancing 0 Final checkout OFLUS MUCH MORE! CREDIT CARD CUSTOMERS Use toll free number place order Have VISA MasterCard VISA ready call OR mail $2405 S & H TO PLANE VIDEO MasterCardPO Box 23128 Des Moines IA 50322 Iowa residents add 4% sales tax vsnrno .rL g 18003838251 balance Used neck strap made some extremely wild land ings Until solution found OUr solution solved both problems necessary tinker inter nal workings transmitter either also works well FUtabas easily adapted set Plus darn cheap simplify things am enclosing ar ticle fix appeared fall issue High Flight being used Airtronics transmitters around FUtabas other brands direct experience have found practically impossible turn off trans mitter reaching trims either side power switch 4-40 rod stops right see sketch Ive found helped getting used exactly trims located too Obviously rod can bent bit dif ferently use neck strap position rod directly over switch will just efficient Feel free use part article wish including drawing think will help others con cerned about switch problem well transmitter balance problem Joan Alyeas High Flight article con cerning above device states thunk up Al Couture device simple dont think necessary clude Joans assembly instructions ac companied original article Continued page 18 12 angspan ~hIer tt ernglpafl propellet dnaon N hJ Hornet Kit N Hand MadeN Ready-to-Fly AweiJUPJBalsa Wood Model Airplanes404 Interceptor YES Please RUSH Classic 3 Packs include 74 Fighter A-J Hornet & 404 Interceptor Pack $1995 plus $300 shipping & handling Add 5100 2nd-Day UPS Name _________________________ Address ______________ ____________________ CityStaieZip Send check money order A-J Manolacturing Inc 0 PO Sos 68132 APortland OR 972h5 503 653-2038 -U U U U odel Aviation 2 xsww ~uui 151521 1 U] WE21 1111 ~ i 3Zi7AA RE SHOOTING DOWN HIGH BALSA PRICES WITH SUPER QUALITY Satisfaction Guaranteed Direct Only BALSA SMUTS 36 48 30 BALSA SliCKS 3648 1162 337161409 3322 401 163810 182 431161214 3162 49332o1410 14 2 563323812 1 323 37332216 1203 37 181808 1163 37 49 31 18141116 3323 44 58 37 18381218 183 5471 46 18121024 3163 6282 553163161116 14 3 73 95 61316381720 5163 85110316122230 38 3 89124 71 14141624 12 3110155 14381926 343165181 138 1164 58 7648 14343444 9324 70 9466 1414055 18 4 80106 66516516-7128 3164 93122 75 38382737 14 4110134 84 38o123246 38 4165226139 38344255 12 4225 2613815270 12123653 MATCHED SMUTS4212 344662 332410012 15878 84os58 554865 9 642034 346790 44 3 BALSA HOT LINE Coil 806 745 6394 10am 6 pm Central Time CUSTOM CUT CONTEST BALSA Sheets Piece ed Close Tolerances AAA Grade Dried ped 100% serious modeler want performance LIGHT 4-6 LB WOOD 36 1/223 1/283 1116 3 3/2203 1/83 31183 11403 3/803 1/23 31403 13 1/164 3/3244 1/84 3/184 11404 3/804 BALSA TRIANGLES 36 42563 8 83062 3562 4574 5591 185 BALSA PLANKS36125 90158 2 57198 32 9388 4293425 1112338298 11124388119 22231135 23335157 24475189 33515285 347151/24385 TAPERED SHEETS 36 142 65 143 85 38268 38396 123120 LONE STAR EPOXY 90Ll-8 95 S 0596 15,,598 300,598 TRAILING EDGE 36 14132 51611439 3811246 2270 must try 4-6 lb balsa * NEW * Hundreds new sizes accessories finishing maerials Send #10 SASE lates catalog SPRUCE STICKS 36 48 I/B 1/81725 18 142026 18 3182232 3/163162838 14 l/43458 1/4 3/84095 1/40 124585 318 0 3/84868 3/8 1126077 12347997 SPRUCE TRIANGLES 36 3/83847 121284 343481 LflIPLY48 118x6175 1/8x12350 114x6275 114s12550 BASSWOOD48 3/163/1626 3/161/435 3/163/838 3/161/246 3/163460 1/4l/442 1/43/649 1/43480 3/803/860 3/81275 3/803490 1/21290 12 034100 BUNDLE DEALS 20-l/16336898 201/16 4361035 20332 o336865 15-3/32 436959 151/80336735 101/8436695 153/16336928 103/15436835 1014336655 1914436930 103/5336878 53/5436655 51/2335540 51/24351080 103/32446885 51/8448500 5315448688 514448840 HARD MAPLE 14 3S 3638 38 12 39 34 1 2 034 BIRCH DO WELS 18 3/s /4 516 38 IS, 40 45 50 58 68 36 09 11 14 25 32 3 PLY 3IRCH 48 1164s12835 1132x12475 1118s12475 1/8s12495 SPLYSIRCH 48 3132s12700 118x12775 3116x12025 114x12625 3j8x12725 112x12900 GROOVED LG MOUNTS 12 lahea 3/834l1 8/40 38 /32140 1/234/3/16/45 INS TANTOLUE 304 Thck298 1 o Th,298 2, TOck550 20 rsn558 LONE STAR MODELS cont 48 Handling charge pay UPS Add *300 COD *400 extra PP APO FPO 1623 57th Se Lubbock TX 79412 Stat. WeacceptVea Ma88arCard personal checksorCOD05% taxrnTexas US currencyonly MinimumWood Order*1000 6Vp Hobby Horn hobby specialtIes MIDWAY MODEL CO Old Timer Kits A/C AND FF Hobby Horn discount prices MMC FULL KITS listed Full Kits include cut parts plan strip sheet wood wire window material Kits marked ihe wire landing gear pm-bent 1936 FlyIng Quaker 84$6476 1938 Powerhouse 5O$2996 1937 Long Cabin 78$4716 1939 T Sportater SO$2996 1937 Quaker Flash 67$4556 1940 Buzzard Bombshell 50 span kit4$3596 1937 AIr Chief 61$3596 r74 ...... 7116 1 00S 0 100 GilderId Timer Sailplanemodifications s own RI1 0 P & W MODEL SERVICE Old Timer kits FF 8/C following discount price full kits full kits clude cut parts plan stick sheet wood wire windshield material 1935 MIss AmerIca 84$7196 1936 Buccaneer 84$5996 1937 DallaIre 108$7516 1938 ClIpper Mk 72$5328 1938 Kloud King 03$4238 1938 Powerhouse 84$5356 1938 Record Breaker 96$6956 1938 Trenton Terror 72$4076 1939 KordalAlake 44$1916 1939 Mercu 72$5836 1939 Zippar4 1940 Ranger 46:: .3196 1940 Sailplane 78$0476 1940 So Long 50$3036 1941 BrigIdler 56$4076 1941 Super Quaker 78$7278 1941 Playboy Jr 54$3118 1941 Playboy Sr 78$7276 1941 Brooklyn Dodoer 56$4236 82 Page 1990 CATALOGUF 00 ad 200$2 pp/lst Ciass free 01 30 add ested 1st order $250 $2001 $4500 add $325 $4501 HobbHorn $7000 add $375 0er 3 MO N ST[A] $7000 add $450 Caiif add 025% tax BOX 2212 Send MO VISNMC # &WESTMINSTEACA 92684 ExpI Check allow up 4 893-8311 30 days clearanceHours Mon-Fri 9AM 5PM checks same mail brought letter Joe MeCamley Jack McDermott following de scription solution inadvertent switching-off problem appears thing stupid solution switch design problem some models RC transmit ters recently bought Futaba 5UAF transmitter noticed switch sit ting much higher Conquestseries radio also can turned off acci dentally operate one-man machine shop part-time made switch guard radio own Several members club belong liked guard made up few have selling have seen switches shut off three times twice trimming once handing transmitter back instructor unclipping neck strap attach ment clip hit switch shut off ra dio three incidents planes taled luckily no hurt sales pitch guard agree manufacturers should redesign switch placement height radios Jacks letter included example switch guard manufactured RMC River view Machine Co one-man company rectangular plastic molding about 34 x /o provides raised barrier Continued page 20 18 Model Aviation BLUES 1CA getting down7 get protected CA mask Safety Plus mask will eliminate CA fumes epoxy polyester resin vapors air breath Lightweight easy breathing comfortable CA Mask $1595 Paint Mask $2045 See hobby dealer first doesnt have what need order direct Safety Plus PO Box 1173 Dept 12M Clinton Mississippi 39056 Call toll free 1-800-842-7233 Mississippi dial 601-924-9640 VISA MASTERCARD accepted COD add $250 shipping handling included Dealer Inquiries Invited PLU5 around switch instructions package state Help prevent accidental shutoff trimming Directions Clean surfaces apply thin coating clear rubber silicone sealant affix guard let dry 24 hrs Jack didnt state much asking switch guard guess sin cere statement letter sales pitch ever should interested purchasing guards write Riverview Ma chine Company 10 Radcliffe Dr Hudson NH 03051 Yet another solu tion acciden tal switching-off problem came Tom Cater Grand Rapids MI Toms solution something suggest radio manufacturers might want consider future produc tion transmitters simply toggle switch locks mechanically both off positions oper ate switch first have pull out switch han dle before can moved Tom included ification sheet Augat Alco switches lock ing levers Model MTL-106D single-pole double-throw switch locks both positions Tom said retrofitted transmitter such switch years ago works great also stated 'All transmitter functions used flying should have type switch Children flying field isnt often receive mail ladies response Safety column fact months column first feature letters two ladies Joan Alyea lady Arlington TX wishes remain anonymous liked letter much Im going reprint its entirety Safety column January issue Model Aviation really grabbed atten tion dont fly RC airplanes husband does problem children flying field very valid concern daughter toddler hus band mistaken notion too could supervise flying However after much discussion agreed would go flying alone would go along watch field disregard childrens safety parents lose themselves hobby just problem RCers ride horses have same complaint about mothers come ride barn leave toddlers roam unsuper vised have seen children climbing trac tors playing parked cars doors left open kids can climb go sleep exploring storage rooms contain rat bait wormers repel lents wander behind horses Just like fellow mentioned mother didnt come out fly ing field baby sit dont go out ride babysit either good conscience cant turn back kid getting trouble cause mom off riding somewhere basic mis conception applica ble both situa tions par ent primarily concerned interests wheth er flying riding Unfortunate ly safety kids becomes secon dary hazards site mini mized par ent can what wants guilt attitude Well others around wholl help keep eye Jun ior isnt anything Jun ior can get takes over un spoken reliance communal babysit ting deprives members chance enjoy hobby Plus everybody assumes somebody else watching kid sort 01 thinking leads dmwnings often wondet parents whe would never con sider leaving child home alone unattended few min utes because danger could get can ex pose unsupervised child countless new hazards flying field barn As article worst offenders fail see negligence no matter diplomatically approached least flying club has advantage vot ing implementing rules have Continued page 22 20 Model Aviation privilege go far saying No Toddlers unless accompanied nonfly ing person mandate have ac quired two warnings about kids roam ing around unsupervised fine prohibi tion bringing couple months stable policy set owners may mention anything about roaming kids fear stepping toes having paying boarders leave elsewhere dont think anyone can honestly mis understand intentions look ing after welfare children par ents have put aside common sense order temporarily pursue own interests Thank addressing problem never before occurred RCers equestrians anything common appears lack kid supervision has no limits Another interesting letter subject came Reverend Benny Vickrey Sr addition being pastor High Point NC also RC full-scale flier Reverend Vickrey began modeling 1954-55 flew Control Line age about six seven before getting RC 1974 also owned 1946 Ercoupe nine years letter stated Ill first admit 1974 1982 bothered also see children flying site knew danger also dollar damage could 1982 son born us after 13 years marriage joy have sharing him full-scale fly ing has over 600 hours air thrill last year half teaching him fly RC have satisfying anything Ive ever done life Lee Jr now seven li censed AMA member recently partici pated first contestand dont know excited dad son What Im trying say guess no children children posed danger flying site very lit tle sympathy curiosity excite ment watch planes part family As son has come along have al ways taught safety first must add responsible parent familiar hobby will keep child under constant control dont suspect either new hobby slack parents other duties too Children hope have keep ing hobby alive design ers plan makers kit producers future say parents responsible Its child being menace flying site adult brought child doesnt watch him son has respect model aircraft ra dios does lot new hightech toys Never have seen him try pick up bother anyones planes site RED MAX 4-CYCLE FUEL Eliminates detonation & kickback 4-cycle engines smoother idle ft power 104 CYCLE129089584580872524972 154 CYCLE1590 1070 101091482031412 RED MAX HELICOPTER FUEL Eirtreniely smooth running extra defoamer drk color special heavy oil helicpbs 10 Helicopter 1340 945 895 858 775 27672 15 Helicopter1640 1120 1060 964 87034112 RED MAX PERFORMANCE FUELI High flash point heavy oil uea tuned pipes ductad fan ft other heavy dty app 5 Performance114084579577570122704 _______ l0Perlormarrce 134094589585877527672 _______ iSPerformance1640 1120 106096487034112 _______ RED MAX PArrERN FUEL Proven best fuel pettern engines using pumps tuned pipe SPattarn1105810760740666120504 lOPattern130691086082374025372 _______ 15 Pattern1605 1085 1025 929 835 28692 _______ SUPER TIGER 3000 FUEL Best fuel Super Tiger 20004000 engines _____Supertiger3000 1290 895 845 808 725 24972 _____ 22 Model Aviation Order Form CALL OR USE THIS HANDY ORDER FORM TO SPEED YOUR ORDER FILL IN OTY ON THE LEFT THE TOTAL ON THE RIGHT Freight free qts gals No hand ling charge Freight collect drums Deduct 3% prepay Mix qty Total qty deter mines price SC orders add 5% telex tax Dealer end club prices avail Accept credit cards checks COD COD add $2 per cartonl Personal checks may held until cleared QTYFUEL1 GAL 4 GAL 24 GAL 60 GAL 128 Gal 154 GAL 1TOTAL$ ordered MIXTUREDRUMAMT RED MAX PREMIUM FUELI Thia fuel beginners ft sport flyers should use Avail synthetic castor blend RED MAX 094568563560056614300 RED MAX 5109079574572565120004 RED MAX 10129089684580872524972 ______ RED MAX 12144098392886077228192 _______ RED MAX 1515901070101091482031412 _______ RED MAX RACING FUEL Trophy winner planes boats ft cars two boat blends castor ok up 40% nIOo REDMAX2O1745124511701125102543185 REDMAX2S1990142013301264119490272 RED MAX402608193318081716153971708 REDMAXSO3163228321231973176885966 REDMAXED22202395222521231998100228 RED MAX 6533252500233022212113107404 Power easy starting power Smooth take offs power intricate maneuvers Red Max makes engine Come alive power performance YOU never expected can have power Its phone call away Power today next week next year Red Maxs secret gredients keep engine last ing longer running power fully other 100% money RED MAX FUEL Continued page 141 RED MAX DIESEL FUEL Suparior diesel back list popular demand customers Ball Bearings1767 1326 1290 1164 1060 DieselPianBearings 1867 1426 1390 1284 1160 SMOKER FLUID best smoker fluid 2 4 cycle engines Smoker Fluid1290 895 840 808 725 24972 back guaran tee com pletely sat isfied reason Red Max has power better idle better wear char acteristics _____ other fuel PLEASE PRINT CUSTOM BLENDED FUEL INGRDIENTS Grand Available type engine use Call price Mm gallon Total boata-cara-helicopters-speed-peniern-scalaY acale-kavan-ignition-st3000 NAME BOX TAEFT ITV EXPIAATIAN flATC Safety/Preston Continued page 22 Since full-time occupation involves safety childrens products can echo Reverend Vickreys observations sig nificant number accident reports daily cross desk wonder parents time incident child left alone long Which brings last subject months column Fuel explosion Two Florida modelers Clifford Hiatt Paul Gauger sent same newspaper clipping Orlando Sentinel captioned Boy Lighter Checks Toys FuelTank Ex plodes accident occurred December 16 reported newspaper Sun day December 17 article stated 11-year-old boy wasnt sure whether model airplanes fuel tank full lit disposable lighter see en gine resulting explosion boy re ceived second- third-degree burns face neck chest hands left leg reported boy supposed play model airplane unless some supervising him Paul Gauger also sent follow-up story incident appeared same newspaper following day December Continued page 144 ALL ABOUT BUILDING FLYING COVERING ENGINES AND MORE GETTING AIRBORNE VOLUME ONE has over 400 large detailed photographs includes topics lIke selecting radio radio control works learning fly instructor learning wIth instructor learn basic maneuvers like landing Other chapters explaIn about ARFs field equipment operating engines assembling airplane easy learning control Installations much Cat Number BOKOO9$1295 GETTiNG AIRBORNE JEII GETTING AIRBORNE VOLUME TWO includes topics like building strength appearance alignment New plastic film covering techniques developed experts beginner explain get nicad batteries rebuild servo engine airframe Additional installations topics shown much Cat Number BOKOIO$1295 MARRY ft MIGLEY & SONS INC p a sax 532 GLENWOOD ILL 60425 April 1990 141 GE1TING AIRBORNE VOWUE PERFECT PATTERNS Fly perfect patterns time F&Es very affordable fiberglass-and-foam pattern planes Vertigo II oldie goodie 65 span 50 fuselage 600 l wing area Designed 60 power Trike gear Kit lA-i 038 $10995 plus shipping NPhoenix V VI proven trophy-winners board renowned Don Lowe Choose 3 sizes power requirements suit own competitive needs Phoenix V 40 Kit #A-1026 $8995 Phoenix V 60 Kit #A-1027 $9995 Phoenix VI 80 Kit #A-1028 $10995 plus shipping Cure-Air aerobat anhedral 64 span 680 l wing area Special anhedral stabs make Cure-Air behave like dream t side up upside down 60 power Kit lA-i 006 $10995 plus shipping F8E kits feature precision-molded fiberglass fuselages balsa-covered foam wings reduced weight Write call FREE catalog pattern planes stand-off scale current classic warbirds trainer lodayl 1836 Stout Drive inster PA 18974 675-9882 Dler inquii invited SHORT KiTS INCLUOt STYROFOAM WING CORES CANOPIES COLNES PLANS ENGINE MOUNTS PIREWALLS MOLDED MISC PARTS SOME HARDWARE AND MATERIALS LIST FOR BALSA AND ADDITIONAL OFF THE SHELF ITEMS AMMO ZERO SR SPAN 3750 PAD TOMAHAWE 55SPAN3750P3R AIRACORRA 55SPAN3750 P510 MUSTANG 54SPAN37 50 S COOL FOLGORE SRSPAN3750YR FOCEE WOLF 1W 34 SPAN 3730 A26 INVADER 65 SPAN . SAPSr~ P3e LIGHTNING 70 SPAN . 74 95 FAA COeSAIR 56 SPAN . 44 PS11IE~ ORDRRIPdG SEND CHECK OR MONEY CR009 FOR REQUIRED ARROUNT PLES $450 PER KIT CANADIANS ADD 3750 ILEINOIS RESIDENTS ADD RVS% YAK WING Mfg 306 E Simmons Galesburg IL 61401 DUAL STRUT NICKEL PLATED NOSE GEAR H 9 Fults Tooling PO Box 95 Champaign IL 618241 Safety/Preston Continued page 141 18 stated boy play ing model airplane garage home lit disposable lighter melt fuel tube model lighter ignited fumes nearby fuel can caused explosion newspaper articles did identify model Pauls accompanying let ter said believed model question RTF ready-to-fly-7--Ed Control Line plane appears good example introduce son hobby Have safe month Radio Technique/Myers Continued page 37 overntght charger can overcharge keep putting back take out Chargers rated current de liver tong takes recharge battery So know what he/she ing Simple answer Use ammeter cut wires charger connect cut ends ammeter nor cut other wtre charger puts out 45 55 mA what get chargers come RC set would rated C/tO charging AA-sized pencell pack Typi cally such batteries will constructed cells rated between 450 550 mAh So C di vided charging current equals 450/45 50/55 sed way referred C/tO charger overnight charger will see shortly Now very same charger used charge lOO-mAH micro-pack would called what Class Thats right would C/2 charger 100/50 w plug same charger 4000-mAb D-cell what have Obviously its 4000/50 ould called C/80 charger care long time ago somebody discovered C/tO charger could left connected dis charged cell overnight cell would fully charged morning based turn printer airfoil plotter with.. 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AdAW5S2533Au CYGNET Software 24843 Del Prado #141b Dana Point CA 92629 eight-hour workday really closer nine hours long take account lunch washup couple coffee breaks So overnight charger born Overnight means something order 15 hours charging C/tO Thats overcharge modern Ni-Cds toler ate little overcharge helps ensure cells come same final voltage called leveling pack should bear mind basic assumption pack fully discharged start 15-hour re charge should also remember Ni-Cd batteries last long timebut forever tI observed charging C/to could go over weekend damaging cells somebody got busy another job found cell left connected C/tO charger long time months would show signs overcharging left connected C/SO charger would retain its charge suffering bad effects overcharging trickle charger born Battery packs must fully charged before attached trickle charger because proper trickle-charging rate fast enough make up tosses caused internal chemistry called self-discharge trickle charger puts out enough current recharge discharged pack batteries could damaged over long time overcharging Going other direction somebody got im patient After ruining few good cells found charging C/3 rate recharged cells three four hours producing signs overcharging quick charger born Some really impatient people wanted get job done no time So dump chargers invented Cells began blow up havent lived until youve seen seated D-size NiCd cell like telephone company uses ex plode like hand grenade Cells made consumer market have vents prevent such explosions connecting single Ni-Cd cell directly 12-volt battery order shock charge can have se rious consequences medical insurance Like Russian roulette get away until dont Cooler heads prevailed some complicated solutions found Internal changes geome try chemistry created fast-charge cells have spring-loaded resealable vents can recharged 15 minutes 4C price Fast-charge cells will dis charge themselves very quickly fastcharge cells will ruined severely overcharge time vent opens cell looses some electrolyte thereby losing capac ity 144 Model Aviation Farnsworth & ElroyInc
Edition: Model Aviation - 1990/04
Page Numbers: 14, 16, 18, 20, 22, 141, 144
John Preston L9 Accidentally switch ing off RC transmit tersmaybe stupid after Chil dren flying field Pro con Model fuel explosion STUPID COLUMN An overwhelming number letters Ive received read ers writer saw fit comment content column have limentary However once seem rub someone wrong way letter derogatory comments ar rives mailbox Such letter arrived last month re sponse January Safety column among other topics discussed trans mitter power switches being inadvertently turned off during flight letter Morresville PA modeler Joe McCamley following comments read column find have some good things think good bit really stupid can anybody turn off transmitter switch thinking moving trim levers Are ginners what 15 years modeling cant believe could happen Also four-strokes have never props come loose use wrench tighten prop nutsnot glow plug wrench use both wood plastic props have trouble either kind Anybody puts motor vice starts full throttle has stupid Joes letter contained PS added still like Safety Comes First column Thank Joe guess some things see fit put Safety col umn too may think somewhat stu pid However number letters Ive received people have inadver tently turned off transmitters regard stupidity part Per haps person designed transmit ter should point fingers As example such letters follow ing received Joan Dale Alyea read interest comments Andrea Belk January issue Eyelet Transmitter Homemade neck strap attaching rod gets strap hook transmitter CG better balanceand provides shield On/Off switch Less possibility accidental shut off Model Aviation regarding clear prob ability turning off transmitter acciden tally began testing Airtronics Vanguard PCM high-interference area request Cliff Weirick problem accidental shutoff first things noticed told Cliff about thing bothered us ever fact transmitter out Continued page 16 SO SLZ TO KER..1ICKt~lLLLTAKTl4EJ KID WITN ME THERE iSNT AN\TiUN- JUNO CAN ET INTcUh 14 Model Aviation column provided address Items concern regarding safety aspects model aviation actMdes Content column however opinion author does necessarily represent offidal position Academy Model Aeronautics ap Hook Nuts Threaded Ed1adedFuel Rod 7Tubing ri\_ 4 3AgLjj 2tIth D Ugly Stick designed Phil Kraft alltime favorite ready-to-fly available either 40 60 size wing tail body parts pre-covered brilliant red white black graphics ready final assembly kits con structed entirely balsa ply no foam ude motor mount spinner landing gear wheels fuel tank control rods horns hinges simple stepby-step instructions Specifications Wing span Wing area Length Weight Radio Engine Distributed Hobby Dynamics Distributors PO Box 3726 Champaign IL 61 826-3726 Phone 1-217-355-0022 60 size40 size 6052 72osqinS94sqin 4644 96oz8Ooz 4ch4ch 40-6030-45 Available hobby stores everywhere . Lqnar7Ics 4105 FIeldstone Road Champaign II 81821 NEW VHS-4 HOUR FORMAT 2 \4u1J e- tape youve \aj7 waiting finally youre new hobby just want learn secret of wood plane construction YOU PLANE VIDEO Presents BUILDING IT RIGHT THE FIRST TIME FIRST NO-NONSENSE VIDEO OF WOOD AIRCRAFT CONSTRUCTION APPROX 4 HOURS ON e Radio installation e Straight wing building e Installing hinges eshoar webbing o Applying PO cloth e Servo installation e Setting up new radio 0 Built-up tail surfaces Slab tail surfaces 0 Aileron installation 0 Fuel tank installation eNew engine setup e Fuselage construction eBUILDING STRAIGHT 0 Installing pushrods o Covering film Eliminating warps e Aligning Balancing 0 Final checkout OFLUS MUCH MORE! CREDIT CARD CUSTOMERS Use toll free number place order Have VISA MasterCard VISA ready call OR mail $2405 S & H TO PLANE VIDEO MasterCardPO Box 23128 Des Moines IA 50322 Iowa residents add 4% sales tax vsnrno .rL g 18003838251 balance Used neck strap made some extremely wild land ings Until solution found OUr solution solved both problems necessary tinker inter nal workings transmitter either also works well FUtabas easily adapted set Plus darn cheap simplify things am enclosing ar ticle fix appeared fall issue High Flight being used Airtronics transmitters around FUtabas other brands direct experience have found practically impossible turn off trans mitter reaching trims either side power switch 4-40 rod stops right see sketch Ive found helped getting used exactly trims located too Obviously rod can bent bit dif ferently use neck strap position rod directly over switch will just efficient Feel free use part article wish including drawing think will help others con cerned about switch problem well transmitter balance problem Joan Alyeas High Flight article con cerning above device states thunk up Al Couture device simple dont think necessary clude Joans assembly instructions ac companied original article Continued page 18 12 angspan ~hIer tt ernglpafl propellet dnaon N hJ Hornet Kit N Hand MadeN Ready-to-Fly AweiJUPJBalsa Wood Model Airplanes404 Interceptor YES Please RUSH Classic 3 Packs include 74 Fighter A-J Hornet & 404 Interceptor Pack $1995 plus $300 shipping & handling Add 5100 2nd-Day UPS Name _________________________ Address ______________ ____________________ CityStaieZip Send check money order A-J Manolacturing Inc 0 PO Sos 68132 APortland OR 972h5 503 653-2038 -U U U U odel Aviation 2 xsww ~uui 151521 1 U] WE21 1111 ~ i 3Zi7AA RE SHOOTING DOWN HIGH BALSA PRICES WITH SUPER QUALITY Satisfaction Guaranteed Direct Only BALSA SMUTS 36 48 30 BALSA SliCKS 3648 1162 337161409 3322 401 163810 182 431161214 3162 49332o1410 14 2 563323812 1 323 37332216 1203 37 181808 1163 37 49 31 18141116 3323 44 58 37 18381218 183 5471 46 18121024 3163 6282 553163161116 14 3 73 95 61316381720 5163 85110316122230 38 3 89124 71 14141624 12 3110155 14381926 343165181 138 1164 58 7648 14343444 9324 70 9466 1414055 18 4 80106 66516516-7128 3164 93122 75 38382737 14 4110134 84 38o123246 38 4165226139 38344255 12 4225 2613815270 12123653 MATCHED SMUTS4212 344662 332410012 15878 84os58 554865 9 642034 346790 44 3 BALSA HOT LINE Coil 806 745 6394 10am 6 pm Central Time CUSTOM CUT CONTEST BALSA Sheets Piece ed Close Tolerances AAA Grade Dried ped 100% serious modeler want performance LIGHT 4-6 LB WOOD 36 1/223 1/283 1116 3 3/2203 1/83 31183 11403 3/803 1/23 31403 13 1/164 3/3244 1/84 3/184 11404 3/804 BALSA TRIANGLES 36 42563 8 83062 3562 4574 5591 185 BALSA PLANKS36125 90158 2 57198 32 9388 4293425 1112338298 11124388119 22231135 23335157 24475189 33515285 347151/24385 TAPERED SHEETS 36 142 65 143 85 38268 38396 123120 LONE STAR EPOXY 90Ll-8 95 S 0596 15,,598 300,598 TRAILING EDGE 36 14132 51611439 3811246 2270 must try 4-6 lb balsa * NEW * Hundreds new sizes accessories finishing maerials Send #10 SASE lates catalog SPRUCE STICKS 36 48 I/B 1/81725 18 142026 18 3182232 3/163162838 14 l/43458 1/4 3/84095 1/40 124585 318 0 3/84868 3/8 1126077 12347997 SPRUCE TRIANGLES 36 3/83847 121284 343481 LflIPLY48 118x6175 1/8x12350 114x6275 114s12550 BASSWOOD48 3/163/1626 3/161/435 3/163/838 3/161/246 3/163460 1/4l/442 1/43/649 1/43480 3/803/860 3/81275 3/803490 1/21290 12 034100 BUNDLE DEALS 20-l/16336898 201/16 4361035 20332 o336865 15-3/32 436959 151/80336735 101/8436695 153/16336928 103/15436835 1014336655 1914436930 103/5336878 53/5436655 51/2335540 51/24351080 103/32446885 51/8448500 5315448688 514448840 HARD MAPLE 14 3S 3638 38 12 39 34 1 2 034 BIRCH DO WELS 18 3/s /4 516 38 IS, 40 45 50 58 68 36 09 11 14 25 32 3 PLY 3IRCH 48 1164s12835 1132x12475 1118s12475 1/8s12495 SPLYSIRCH 48 3132s12700 118x12775 3116x12025 114x12625 3j8x12725 112x12900 GROOVED LG MOUNTS 12 lahea 3/834l1 8/40 38 /32140 1/234/3/16/45 INS TANTOLUE 304 Thck298 1 o Th,298 2, TOck550 20 rsn558 LONE STAR MODELS cont 48 Handling charge pay UPS Add *300 COD *400 extra PP APO FPO 1623 57th Se Lubbock TX 79412 Stat. WeacceptVea Ma88arCard personal checksorCOD05% taxrnTexas US currencyonly MinimumWood Order*1000 6Vp Hobby Horn hobby specialtIes MIDWAY MODEL CO Old Timer Kits A/C AND FF Hobby Horn discount prices MMC FULL KITS listed Full Kits include cut parts plan strip sheet wood wire window material Kits marked ihe wire landing gear pm-bent 1936 FlyIng Quaker 84$6476 1938 Powerhouse 5O$2996 1937 Long Cabin 78$4716 1939 T Sportater SO$2996 1937 Quaker Flash 67$4556 1940 Buzzard Bombshell 50 span kit4$3596 1937 AIr Chief 61$3596 r74 ...... 7116 1 00S 0 100 GilderId Timer Sailplanemodifications s own RI1 0 P & W MODEL SERVICE Old Timer kits FF 8/C following discount price full kits full kits clude cut parts plan stick sheet wood wire windshield material 1935 MIss AmerIca 84$7196 1936 Buccaneer 84$5996 1937 DallaIre 108$7516 1938 ClIpper Mk 72$5328 1938 Kloud King 03$4238 1938 Powerhouse 84$5356 1938 Record Breaker 96$6956 1938 Trenton Terror 72$4076 1939 KordalAlake 44$1916 1939 Mercu 72$5836 1939 Zippar4 1940 Ranger 46:: .3196 1940 Sailplane 78$0476 1940 So Long 50$3036 1941 BrigIdler 56$4076 1941 Super Quaker 78$7278 1941 Playboy Jr 54$3118 1941 Playboy Sr 78$7276 1941 Brooklyn Dodoer 56$4236 82 Page 1990 CATALOGUF 00 ad 200$2 pp/lst Ciass free 01 30 add ested 1st order $250 $2001 $4500 add $325 $4501 HobbHorn $7000 add $375 0er 3 MO N ST[A] $7000 add $450 Caiif add 025% tax BOX 2212 Send MO VISNMC # &WESTMINSTEACA 92684 ExpI Check allow up 4 893-8311 30 days clearanceHours Mon-Fri 9AM 5PM checks same mail brought letter Joe MeCamley Jack McDermott following de scription solution inadvertent switching-off problem appears thing stupid solution switch design problem some models RC transmit ters recently bought Futaba 5UAF transmitter noticed switch sit ting much higher Conquestseries radio also can turned off acci dentally operate one-man machine shop part-time made switch guard radio own Several members club belong liked guard made up few have selling have seen switches shut off three times twice trimming once handing transmitter back instructor unclipping neck strap attach ment clip hit switch shut off ra dio three incidents planes taled luckily no hurt sales pitch guard agree manufacturers should redesign switch placement height radios Jacks letter included example switch guard manufactured RMC River view Machine Co one-man company rectangular plastic molding about 34 x /o provides raised barrier Continued page 20 18 Model Aviation BLUES 1CA getting down7 get protected CA mask Safety Plus mask will eliminate CA fumes epoxy polyester resin vapors air breath Lightweight easy breathing comfortable CA Mask $1595 Paint Mask $2045 See hobby dealer first doesnt have what need order direct Safety Plus PO Box 1173 Dept 12M Clinton Mississippi 39056 Call toll free 1-800-842-7233 Mississippi dial 601-924-9640 VISA MASTERCARD accepted COD add $250 shipping handling included Dealer Inquiries Invited PLU5 around switch instructions package state Help prevent accidental shutoff trimming Directions Clean surfaces apply thin coating clear rubber silicone sealant affix guard let dry 24 hrs Jack didnt state much asking switch guard guess sin cere statement letter sales pitch ever should interested purchasing guards write Riverview Ma chine Company 10 Radcliffe Dr Hudson NH 03051 Yet another solu tion acciden tal switching-off problem came Tom Cater Grand Rapids MI Toms solution something suggest radio manufacturers might want consider future produc tion transmitters simply toggle switch locks mechanically both off positions oper ate switch first have pull out switch han dle before can moved Tom included ification sheet Augat Alco switches lock ing levers Model MTL-106D single-pole double-throw switch locks both positions Tom said retrofitted transmitter such switch years ago works great also stated 'All transmitter functions used flying should have type switch Children flying field isnt often receive mail ladies response Safety column fact months column first feature letters two ladies Joan Alyea lady Arlington TX wishes remain anonymous liked letter much Im going reprint its entirety Safety column January issue Model Aviation really grabbed atten tion dont fly RC airplanes husband does problem children flying field very valid concern daughter toddler hus band mistaken notion too could supervise flying However after much discussion agreed would go flying alone would go along watch field disregard childrens safety parents lose themselves hobby just problem RCers ride horses have same complaint about mothers come ride barn leave toddlers roam unsuper vised have seen children climbing trac tors playing parked cars doors left open kids can climb go sleep exploring storage rooms contain rat bait wormers repel lents wander behind horses Just like fellow mentioned mother didnt come out fly ing field baby sit dont go out ride babysit either good conscience cant turn back kid getting trouble cause mom off riding somewhere basic mis conception applica ble both situa tions par ent primarily concerned interests wheth er flying riding Unfortunate ly safety kids becomes secon dary hazards site mini mized par ent can what wants guilt attitude Well others around wholl help keep eye Jun ior isnt anything Jun ior can get takes over un spoken reliance communal babysit ting deprives members chance enjoy hobby Plus everybody assumes somebody else watching kid sort 01 thinking leads dmwnings often wondet parents whe would never con sider leaving child home alone unattended few min utes because danger could get can ex pose unsupervised child countless new hazards flying field barn As article worst offenders fail see negligence no matter diplomatically approached least flying club has advantage vot ing implementing rules have Continued page 22 20 Model Aviation privilege go far saying No Toddlers unless accompanied nonfly ing person mandate have ac quired two warnings about kids roam ing around unsupervised fine prohibi tion bringing couple months stable policy set owners may mention anything about roaming kids fear stepping toes having paying boarders leave elsewhere dont think anyone can honestly mis understand intentions look ing after welfare children par ents have put aside common sense order temporarily pursue own interests Thank addressing problem never before occurred RCers equestrians anything common appears lack kid supervision has no limits Another interesting letter subject came Reverend Benny Vickrey Sr addition being pastor High Point NC also RC full-scale flier Reverend Vickrey began modeling 1954-55 flew Control Line age about six seven before getting RC 1974 also owned 1946 Ercoupe nine years letter stated Ill first admit 1974 1982 bothered also see children flying site knew danger also dollar damage could 1982 son born us after 13 years marriage joy have sharing him full-scale fly ing has over 600 hours air thrill last year half teaching him fly RC have satisfying anything Ive ever done life Lee Jr now seven li censed AMA member recently partici pated first contestand dont know excited dad son What Im trying say guess no children children posed danger flying site very lit tle sympathy curiosity excite ment watch planes part family As son has come along have al ways taught safety first must add responsible parent familiar hobby will keep child under constant control dont suspect either new hobby slack parents other duties too Children hope have keep ing hobby alive design ers plan makers kit producers future say parents responsible Its child being menace flying site adult brought child doesnt watch him son has respect model aircraft ra dios does lot new hightech toys Never have seen him try pick up bother anyones planes site RED MAX 4-CYCLE FUEL Eliminates detonation & kickback 4-cycle engines smoother idle ft power 104 CYCLE129089584580872524972 154 CYCLE1590 1070 101091482031412 RED MAX HELICOPTER FUEL Eirtreniely smooth running extra defoamer drk color special heavy oil helicpbs 10 Helicopter 1340 945 895 858 775 27672 15 Helicopter1640 1120 1060 964 87034112 RED MAX PERFORMANCE FUELI High flash point heavy oil uea tuned pipes ductad fan ft other heavy dty app 5 Performance114084579577570122704 _______ l0Perlormarrce 134094589585877527672 _______ iSPerformance1640 1120 106096487034112 _______ RED MAX PArrERN FUEL Proven best fuel pettern engines using pumps tuned pipe SPattarn1105810760740666120504 lOPattern130691086082374025372 _______ 15 Pattern1605 1085 1025 929 835 28692 _______ SUPER TIGER 3000 FUEL Best fuel Super Tiger 20004000 engines _____Supertiger3000 1290 895 845 808 725 24972 _____ 22 Model Aviation Order Form CALL OR USE THIS HANDY ORDER FORM TO SPEED YOUR ORDER FILL IN OTY ON THE LEFT THE TOTAL ON THE RIGHT Freight free qts gals No hand ling charge Freight collect drums Deduct 3% prepay Mix qty Total qty deter mines price SC orders add 5% telex tax Dealer end club prices avail Accept credit cards checks COD COD add $2 per cartonl Personal checks may held until cleared QTYFUEL1 GAL 4 GAL 24 GAL 60 GAL 128 Gal 154 GAL 1TOTAL$ ordered MIXTUREDRUMAMT RED MAX PREMIUM FUELI Thia fuel beginners ft sport flyers should use Avail synthetic castor blend RED MAX 094568563560056614300 RED MAX 5109079574572565120004 RED MAX 10129089684580872524972 ______ RED MAX 12144098392886077228192 _______ RED MAX 1515901070101091482031412 _______ RED MAX RACING FUEL Trophy winner planes boats ft cars two boat blends castor ok up 40% nIOo REDMAX2O1745124511701125102543185 REDMAX2S1990142013301264119490272 RED MAX402608193318081716153971708 REDMAXSO3163228321231973176885966 REDMAXED22202395222521231998100228 RED MAX 6533252500233022212113107404 Power easy starting power Smooth take offs power intricate maneuvers Red Max makes engine Come alive power performance YOU never expected can have power Its phone call away Power today next week next year Red Maxs secret gredients keep engine last ing longer running power fully other 100% money RED MAX FUEL Continued page 141 RED MAX DIESEL FUEL Suparior diesel back list popular demand customers Ball Bearings1767 1326 1290 1164 1060 DieselPianBearings 1867 1426 1390 1284 1160 SMOKER FLUID best smoker fluid 2 4 cycle engines Smoker Fluid1290 895 840 808 725 24972 back guaran tee com pletely sat isfied reason Red Max has power better idle better wear char acteristics _____ other fuel PLEASE PRINT CUSTOM BLENDED FUEL INGRDIENTS Grand Available type engine use Call price Mm gallon Total boata-cara-helicopters-speed-peniern-scalaY acale-kavan-ignition-st3000 NAME BOX TAEFT ITV EXPIAATIAN flATC Safety/Preston Continued page 22 Since full-time occupation involves safety childrens products can echo Reverend Vickreys observations sig nificant number accident reports daily cross desk wonder parents time incident child left alone long Which brings last subject months column Fuel explosion Two Florida modelers Clifford Hiatt Paul Gauger sent same newspaper clipping Orlando Sentinel captioned Boy Lighter Checks Toys FuelTank Ex plodes accident occurred December 16 reported newspaper Sun day December 17 article stated 11-year-old boy wasnt sure whether model airplanes fuel tank full lit disposable lighter see en gine resulting explosion boy re ceived second- third-degree burns face neck chest hands left leg reported boy supposed play model airplane unless some supervising him Paul Gauger also sent follow-up story incident appeared same newspaper following day December Continued page 144 ALL ABOUT BUILDING FLYING COVERING ENGINES AND MORE GETTING AIRBORNE VOLUME ONE has over 400 large detailed photographs includes topics lIke selecting radio radio control works learning fly instructor learning wIth instructor learn basic maneuvers like landing Other chapters explaIn about ARFs field equipment operating engines assembling airplane easy learning control Installations much Cat Number BOKOO9$1295 GETTiNG AIRBORNE JEII GETTING AIRBORNE VOLUME TWO includes topics like building strength appearance alignment New plastic film covering techniques developed experts beginner explain get nicad batteries rebuild servo engine airframe Additional installations topics shown much Cat Number BOKOIO$1295 MARRY ft MIGLEY & SONS INC p a sax 532 GLENWOOD ILL 60425 April 1990 141 GE1TING AIRBORNE VOWUE PERFECT PATTERNS Fly perfect patterns time F&Es very affordable fiberglass-and-foam pattern planes Vertigo II oldie goodie 65 span 50 fuselage 600 l wing area Designed 60 power Trike gear Kit lA-i 038 $10995 plus shipping NPhoenix V VI proven trophy-winners board renowned Don Lowe Choose 3 sizes power requirements suit own competitive needs Phoenix V 40 Kit #A-1026 $8995 Phoenix V 60 Kit #A-1027 $9995 Phoenix VI 80 Kit #A-1028 $10995 plus shipping Cure-Air aerobat anhedral 64 span 680 l wing area Special anhedral stabs make Cure-Air behave like dream t side up upside down 60 power Kit lA-i 006 $10995 plus shipping F8E kits feature precision-molded fiberglass fuselages balsa-covered foam wings reduced weight Write call FREE catalog pattern planes stand-off scale current classic warbirds trainer lodayl 1836 Stout Drive inster PA 18974 675-9882 Dler inquii invited SHORT KiTS INCLUOt STYROFOAM WING CORES CANOPIES COLNES PLANS ENGINE MOUNTS PIREWALLS MOLDED MISC PARTS SOME HARDWARE AND MATERIALS LIST FOR BALSA AND ADDITIONAL OFF THE SHELF ITEMS AMMO ZERO SR SPAN 3750 PAD TOMAHAWE 55SPAN3750P3R AIRACORRA 55SPAN3750 P510 MUSTANG 54SPAN37 50 S COOL FOLGORE SRSPAN3750YR FOCEE WOLF 1W 34 SPAN 3730 A26 INVADER 65 SPAN . SAPSr~ P3e LIGHTNING 70 SPAN . 74 95 FAA COeSAIR 56 SPAN . 44 PS11IE~ ORDRRIPdG SEND CHECK OR MONEY CR009 FOR REQUIRED ARROUNT PLES $450 PER KIT CANADIANS ADD 3750 ILEINOIS RESIDENTS ADD RVS% YAK WING Mfg 306 E Simmons Galesburg IL 61401 DUAL STRUT NICKEL PLATED NOSE GEAR H 9 Fults Tooling PO Box 95 Champaign IL 618241 Safety/Preston Continued page 141 18 stated boy play ing model airplane garage home lit disposable lighter melt fuel tube model lighter ignited fumes nearby fuel can caused explosion newspaper articles did identify model Pauls accompanying let ter said believed model question RTF ready-to-fly-7--Ed Control Line plane appears good example introduce son hobby Have safe month Radio Technique/Myers Continued page 37 overntght charger can overcharge keep putting back take out Chargers rated current de liver tong takes recharge battery So know what he/she ing Simple answer Use ammeter cut wires charger connect cut ends ammeter nor cut other wtre charger puts out 45 55 mA what get chargers come RC set would rated C/tO charging AA-sized pencell pack Typi cally such batteries will constructed cells rated between 450 550 mAh So C di vided charging current equals 450/45 50/55 sed way referred C/tO charger overnight charger will see shortly Now very same charger used charge lOO-mAH micro-pack would called what Class Thats right would C/2 charger 100/50 w plug same charger 4000-mAb D-cell what have Obviously its 4000/50 ould called C/80 charger care long time ago somebody discovered C/tO charger could left connected dis charged cell overnight cell would fully charged morning based turn printer airfoil plotter with.. 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AdAW5S2533Au CYGNET Software 24843 Del Prado #141b Dana Point CA 92629 eight-hour workday really closer nine hours long take account lunch washup couple coffee breaks So overnight charger born Overnight means something order 15 hours charging C/tO Thats overcharge modern Ni-Cds toler ate little overcharge helps ensure cells come same final voltage called leveling pack should bear mind basic assumption pack fully discharged start 15-hour re charge should also remember Ni-Cd batteries last long timebut forever tI observed charging C/to could go over weekend damaging cells somebody got busy another job found cell left connected C/tO charger long time months would show signs overcharging left connected C/SO charger would retain its charge suffering bad effects overcharging trickle charger born Battery packs must fully charged before attached trickle charger because proper trickle-charging rate fast enough make up tosses caused internal chemistry called self-discharge trickle charger puts out enough current recharge discharged pack batteries could damaged over long time overcharging Going other direction somebody got im patient After ruining few good cells found charging C/3 rate recharged cells three four hours producing signs overcharging quick charger born Some really impatient people wanted get job done no time So dump chargers invented Cells began blow up havent lived until youve seen seated D-size NiCd cell like telephone company uses ex plode like hand grenade Cells made consumer market have vents prevent such explosions connecting single Ni-Cd cell directly 12-volt battery order shock charge can have se rious consequences medical insurance Like Russian roulette get away until dont Cooler heads prevailed some complicated solutions found Internal changes geome try chemistry created fast-charge cells have spring-loaded resealable vents can recharged 15 minutes 4C price Fast-charge cells will dis charge themselves very quickly fastcharge cells will ruined severely overcharge time vent opens cell looses some electrolyte thereby losing capac ity 144 Model Aviation Farnsworth & ElroyInc