John Preston Safety Comes First 5 Pepperaree Ln Sliver Spring MD 20906 column provided address items concern regarding safety aspects model aviation activides Content column however opinion author does necessarily represent official position Academy Model Aeronautics Watch out Any Ni-Cd battery pack can cause serious fire shorted out Cya glue accelera tors Rotating fingerslicers still ELECTRIFYING experience readers have mistaken belief prop being turned electric motor less hazardous ing turned internal combustion engine take look photo accompanying column Thats hand Bob Kopski contributing edi tor MA s RC Electrics column see can assure original color photo Bob enclosed recent letter has impact pun intended Following Bobs explanation happened enclosed photo pretty much shows needs respect Electric well everything else mishap result two situations intermittent economy connec tor some rather embarrassingly poor judge ment part bench test setup 40-size electric motor 10 x 6 wood prop setup cluded associated 18-cell Ni-Cd battery prototype speed control testing ad dition basics full instrumentation measuring current voltage rpm place everything motor would run first reaction somehow might have damaged on-loan speed control began make way through setup knowing included new faulty connector pair Apparently disturbed connector exactly time hand wrong place 3 1 -14 L0OK5 LA E . TERY MVTDDWN may clear photo taken minutes afterward seven slices longest 1% long took estimated 21 milliseconds 0021 seconds io oc pair Electric disastersl left see gruesome looks worse injury hand MAS OWfl Bob Kopaki reultec prop 40-size motor suddenly coming life inopportune moment right remains Bob Afflerbacks electric powered Pattern plane after inflight tire subsequent crash caused shorted Ni-Cd battery cell motors power pack Affler back says hurts ususal because observed unexpectedly high charging current battery before took off flight hindsight realizes should have checked things out carefully before attempting fly again info column 14 Model Aviation cur Despite appearance damage nol too bad being surface hand WHAT WiLL YOU DO FOR 1991 ash current radie system Take chames can still use present radio systems RCD s PLATINUM GRADE AM FM FCC/AMA listed 1991 ivers fit right R/C systems Fly safely bullet-proof receivers NOW D RCD 100* LI RCD 150* LI RCD 200* LI RCD 300* [1 RCD 400* Futobo GAMFutabo JAMFutaba J FMAirtronics AMAirtronks FM *Must sped j channel# order ORDER BY PHONE CA 800 822-1688 US 800 228 -3237 still handle aileron/elevator stick transmitterand mugalmost well before such might very well have case So what its worth read cr5 choose share Im strongly ad vising everyone respectful careful Electric Think little better did sure use quality connectors always thought Electrics less likely cause prop accidents simply because eliminate prop flipping needle valve tweaking other hand fact Elec trics quiet regarded some hav ing little power compared internal combustion engines may lull us false sense security props less hazardous However consider accidental flip switch can result maximum rpm split sec ond potential causing prop-related jury may equal glow engine So volts-and-amps modeler very careful battery pack charged connected Battery pack fires RC models require batter ics Its just Electrics require moreand gen erally biggerbatteries models powered glow engines addition ability re charged times Ni-Cds favored power supply Electrics because abil ity charged discharged high rates current damage other hand following account incident experienced Robert Afflerback illus trates Ni-Cds have limitations Robert enclosed three color pictures dra matically illustrated what happened model battery pack overheated flight due shorted cellsContinued page 18 OR Get RCDs New 1991 -Ready receiver ONLY$7996 OR 2131 Old Oakland Rd Jose CA 95131 1578 Hobby Horn hobby specialties MIUWAY 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 ' have wire tsnding gear pre-bent 1936 FlyIng Quaker 64$6476 1936 Powerhouse 50$2996 1937 Long Cabin 78$4716 1939 T Sportster 50$2996 1937 Quaker Flash 67$4556 1940 Buzzard Bombshell 50 span kit$3596 1937 Air Chief 61$3596 Ruler74. 6 100 Glideran Old Thermlc Timer Sailolanemodlficatlons s own Pd P & W MODEL SERVICE Old Timer kits FE P/C following discount price full kits full kits clude cut parts plan stick sheet wood wire windshield material 1935 MIss America 64$7196 1936 Buccaneer 84$5996 1937 DallaIre 108$7516 1938 Clipper Mk 72$5326 1938 Kioud King 63$4236 1936 Powerhouse 84$5356 1936 Record Breaker 96$6956 1938 Trenton Terror 72$4076 1939 Korda wake 44$1916 1939 Mercury 72$5636 1939 Zipper B4$5356 1940 Ranqer 46$3196 1940 Sailplane 78$8476 1940 So Long 50$3036 1941 Brigidier 56$4076 1941 Super Quaker 76$7276 1941 Playboyjr 54$3116 1941 Playboy Sr 78$7276 1941 Brooklyn Dodner 56$4236 82 Page 1990 CATALOGUn ad 200$2 pp/i sI Class tree $2000 addrequested 1st order $250 $2001 $4500 add $325 $4501 bby Horn S7000 add $375 Over 15173 MON ST4A] $7000 add $450 Calif add 625% Ia, BOX 2212 Send MO VISNMC # &wESTMINSTEACA 92684 ExpI Check tallow up 893-8311 30 days clearanceHours Mon-Fri 9AM checks 16 Model Aviation CA BLUES CA getting down 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 1-800842-7233 Mississippi dial 601-924-9640 VISA MASTERCARD accepted COD add $250 shipping handling included Dealer Inquiries Invited PLU5 NOWATWO TAPE SETI tape youve waiting finally II youre new hobby just want learn secret wood plane construction forYOU PLANE VIDEO Presents BUILDING IT RIGHT THE FIRST TIME FIRST NO-NONSENSE VIDEO OF WOOD AIRCRAFT CONSTRUCTION APPROX 4 HOURS ON e Radio installation 0 Fuel tank installation o Straight wing building e New engine setup o Installing hinges e Futelage construction OShear webbing eSUILDING STRAIGHTl e Applying FG clothe Instulling pushrods e Servo installation0 Covering film e Setting up new radio e Eliminating warps Dozens building tips e Aligning Balancing e Slab tail surfacese Final checkout sAileron installationePLUS MUCH MOREll CREDIT CARD CUSTOMERS Use toll tree number place order Have iS4 MasterCard VISA caIl.24HR5 DAY OR mail $3495 S & H foreign orders add $800 S/Hl PLANE VIDEO MasterCo P0 Box 23128 Clive Iowa 50325 Iowa residents add 4% sales tax PLUMBDUOUELPIOUYDI BUILDAluori TOLL FREEI800J 38382 51ToLL FREE 24HR24 HR OR 15151223-0897 time time have discussed small fires have occurred model airplanes En closed pictures remains 40powered Electric Pattern plane thing will notice fire anything small know magazine doesnt like use color pictures felt black white wouldnt mess justice Sorry about B&W can give RMcM incident occurred March 3 flown airplane about four times con sidering calling day As cleaning up prospective Electric flier asked see airplane fly So dragged out charger connected airplane stood shot breeze about 20 minutes made first mistake returned disconnect battery charger noticed units ammeter indicat ing charge rate about four amps 28 cells airplane never previously able charge higher three amps checked fuselage sides thinking t/ balsa would show excessive heat ran motor check state charge everything seemed OK taxied out took off Shortly after takeoff downwind pass motor just quit Thinking blown fuse cut throttle force habit started turn back runway About halfway around turn onto final saw smoke coming bot tom fuselage radio went fail safe later learned fire burned off receiver antenna point just matter waiting airplane crash model crashed behind rite just off end runway out sight field As everybody started walking crash site some body yelled Weve got fire field LuckContinued page 20 18 Model Aviation CONTROL YOUR MODELS RELIABLY WITH CRYSTALS FROM JAN ALL FREQUENCIES TRANSMIT & RECEIVE QUICK DELIVERY REASONABLE PRICES FOR FREE CATALOG CALL OR WRITE JAN CRYSTALS PO BOX 06017 FORT MYERS FL 33906 813 936-2397 119651VISA TOLL-FREE 1-800-JAN-XTAL 526-9825 FAX ORDERS 1-813-936-3750 K K $1995 IDEO REVIEW THE CLOUD DANCERS INTERNATIONAL H/C SHOW TEAM MEET THE WORLD RENOWNED CLOUD DANCERS SEE THE EXCITING FOOTAGE OF THEIR F-15 EAGLES GIANT SCALE WARBIRDS JUMPERS AND THE FAMOUS FLYING MACHINE MUST FOR YOUR VIDEO COLLECTION! 1 HOUR AND 30 MINUTES OF THE CLOUD DANCERS INACTION FROM BOX TO FINISHED PRODUCT !FL YING! VOLBUILDING SEGMENTS HOBBY LOBbY r trus ros s.u~vLnnIur4; uoj riuRTh WESTS 1/5 SCALE TA LUl Un/Il- IjULUL INNOVATIVE MODELS FOCKE-WULFFWI9OAANDDMODELBOB PARKINSONS VECTOR EAGLEl PLUS TIPS ON SCALE PAINT FINISH APPROXIMATELY 1 HOUR 45 MINUTES SAVE APPROXIMATELY $30000 WITH MANUFACTURERS DISCOUNT COUPONS INCLUDED IN VOLUME 4 $1995 WUNK AVAILABLE ONLY FROM RC VIDEO REVIEW MAGAZINE 13360 KINGSBURY DR WEST PALM BEACH FL 33414 7903435 EACH TAPE $1995 PLUS $250 SHIPPING AND HANDLING CANADIAN ADD $600 FLORIDA ORDERS ADD 6% SALES TAX VISA AND MASTERCHARGE ALSO AVAILABLE ARE VOLUMES 1 AND 2 KING ORANGE AND JETS OVER DELAND NOW AVAILABLE TED AMOUNT OF YEARLY SUBSCRIPTIONS 5 FOR SIX VOLUMES PLUS S & H Sport Scale EXTRA 300 Span 68 700 Sq lbs Now very attractive EXTRA 300 joins DALOTEL 650 CAP 21 ZMPs group 61 -91 powered Sport Scale Aero batic Aircraft Like other 20 AlmostReady-to-Fly models Zimbabwe Model Products range Balsa Kit fea tures accurately framed fuslage plug-in sheeted wings tail feathers scale appearance landing gear epoxy cowl clear canopy Special Introductory Price $22995 gFor details call write ZIMPRO MARKETINO ily other club members fire ex tinguisher pictures show what have left postmortem indicated entire inci dent should filed under stupidity biggest mistake flying airplane after charger showed unexpected increase charge rate Being new Electric flight increased rate didnt strike big problem Also didnt own digital voltmeter charge rate time charge arrived mathemati cally wasnt until after fire discovered ammeter charger reads almost amp low So thought charging three amps 25 minutes really charg ing almost four amps amounts sevenminute overcharge about 17 amp-hours go ing 12-amp-hour cells excessive charge shorted Out two cells started pull normal 25 amps through shorted cells overheated Did learn anything bet did now own good digital voltmeter ters chargers have checked time anything looks funny will take airplane home check out hope experience shorted cell will save some other Electric fliers lot grief Electric fliers arent ones can ex perience fire caused overheated battery pack received two other letters last month non-Electric modelers experienced fires due battery packs becoming shorted first David Burgess described incident volving battery pack cordless drill own words heres what happened About month ago replaced battery Continued page 22 QUADRA RT NEODESHA KS 66757 316325-2821 DEALERS CALL SEND $1 FOR COMPLETE CATALOG DI60ST 6100 AAEngine RF3503I/O 40 SF400141/8 j 60jl255 SF500j55/3200-SOj1570 SF60065/3240-1211575 RF75075/3215/003151075 to&5/SCSi SF000 AdjUOSOle 3/36 Quadra 3140 20 Model Aviation SEE IT ON VIDEO C SUPERTANKS & SUPERMUFFLERS ZINGER WOOD PROPS GIANT SCALE R/C PLANS PO BOX 3076 OAK RIDGE TN 37830 PHONE 615-4824188 tyOOhOOSySSOpOlOOOO1OIS05 Add5200 ship/O19 sod handlisqpiotolod Dual Stnt Nose Gear Fulls Tooling PO Box 95 Champaign IL 61824 pack cordless drill six fresh sub-C Ni Cds discarded old pack 30-gallon plas tic trash can workshop because batter ies would no longer hold charge tents purposes dead other con tents can thought few paper towels couple old catalogs along few balsa scraps working shop much past few weeks didnt re member what else trash can afternoon last week looking something eluded happened think possibly item might have knocked off workbench old steel desk fallen trash can sitting alongside spent few seconds stirring contents can around finding what searching closed up shop went out after noon returned home about four hours later went out shop finished heated air-conditioned 560-sq-ft building backyard opened door greeted clouds thick gray noxious smoke After managed get building ventilated enough able see spotted pile ashes sur rounded burned melted brown plastic mains trash can dumbfounded spent several minutes thinking about what could have caused fire Something remains finally gave answer uminum soft drink can came immediately obvious course rummaging through trash can earlier day moved forgotten aluminum can con tact terminals dead battery pack Apparently enough life generate suf ficient heat set fire papers trash can thank whatever gods watching over day no fire damage building combustible mate rial can its usually full overflowing Im sure fire would have ignited ceiling overhead full gallon fuel just three feet away flight box could have lost thing As did incur loss hundreds perhaps thousands dollars ruined kits balsawood plans tools equipment PVC plastic burns releases hydrochloric acid air soot smoke depos ited onto tools has rusted useless ness have no idea what long-term effect will radio equipment cant imag ine will very good Please warn readers again about danger discarding batteries trash can learned hard way can bet Ill never forget lesson second letter concerned receiver battery pack fire came Sam Blaga Fortunately incident caused no property damage Sam wrote cycled sons Futaba transmitter re ceiver batteries put charge 17 hours rolled up connector wiring tied paper-insulated metal tie put re ceiver batteries receiver charger back paper bag Five days later batteries started smoke time discovered what burning leads melted burnt batter ies hot What caused wires burn dont know son spliced Rx connector new batteries maybe short solder joint certainly seems like short circuit Power easy starting power smooth take offs power intricate maneuvers Red Max makes engine come alive power _____ performance 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 _____ more power fully other _____ 100% money back guaran tee com pletely sat isfied reason Red Max has power better idle better wear char acteristics _____ other fuel 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 qis gals No hand ling charge Freight collect drums Deduct 3% prepay Mix qty Total qty deter mines price SC orders add 5% sales tax Dealer club prices avail Accept credit cards checks COD COD add $2 per canon Personal checks may held until cleared OTY FUEL iGAL 4GAL24GAL6OGAL12SGaI ordered MIXTURE 84GAL jTOTAL$ ________________________________________ DRUM AMT RED MAX PREMIUM FUELI fuel beginners ft sport flyers should use Avail synthetic castor blend RED MAX 094568563560056614300 RED MAX 5109079574572565120004 RED MAX 10129089584580872524972 _______ RED MAX 12144098392886077228192 _______ RED MAX 1515901070101091482031412 _______ RED MAX RACING FUEL Trophy winner planes boats ft cars two boat blends castor ok up 40% nitro REDMAX2O1745124511701125102543185 REDMAX251990142013301284119460272 REDMAX402608193318081716153971708 REDMAXSO3163228321231973176685968 RED MAX 6032202395222521231998100228 RED MAX 8533252500233022212113107404 RED MAX 4-CYCLE FUEL Eliminates detonation ft kickback 4-cycle engines smoother idle ft power 10-4 CYCLE1290 895 845 808 72524972 154 CYCLE1590 1070 1010 914 82031412 RED MAX HELICOPTER FUEL Extremely smooth running extra defoamer drk color special heavy oil helicptrs 10 Helicopter134094589585877527672 iSHelrcopter1640 1120 106098487034112 RED MAX FUEL Continued page 84 RED MAX PERFORMANCE FUEL High flesh point heevy oil use tuned pipes ducted fan ft other heavy dty app 5 Performance114084579577570122704 _______ 10 Performance134094589585877527672 _______ l5Performarrce1640 1120 106096487034112 _______ RED MAX PATrERN FUEL Proven best fuel pettarn engines using pumps end tuned pipe S Pattern1105810760740666120504 lOPattern130591086082374025372 _______ 15 Pattern1605 1085 1025929835 28692 _______ 5UPER TIGER 3000 FUEL Beet fuel Super Tiger 2000-4000 engines ______Super Tiger 3000 1290 695 845 808 725 24972 ______ RED MAX DIESEL FUEL Superior diesel beck list popular demand customers Ball Bearings 1767 1326 1290 1184 1060 DieselPlBee*tgs 1867 1426 1390 1284 1160 SMOKER FLUID beet smoker fluid 2 4 cycle engines Smoker Fluid129089584580872524972 CUSTOM BLENDED FUEL INORDIENTS Available type engine use Call price Mm gallon boatscars-heIicootars-soeadoattern-scala-t4 scale-kavan-ianition-sn3000 PLEASE PRINT BOX aTnFF1Grand Total CITY/STATE ZIP CARD TYPE AND NO EXPIRATION DATE________________ want FAST right out box no other electric comes close GP Marine Stinger Its unique Twinline Drive System turns energy two rugged 550 motors long-lasting water spraying rush power hull designed make its speed easy control Stinger meant raceand win Entirely pre-assembled except required 2-channel radio battery installation Stinger continues blasting through water J LVj j after maneuvers leave its competition bobbing behind Apply included decals sizzling scale appearance youre ready fly See hobby dealer write us today ment has two major benefits First 22-in separation cradle attachment points increases torque Second Glider wing incidence parallel tug wing incidence assures Glid er flying its own weight creating load cradle platforms built can adjusted Gliders wing chords up 14 As two release points rubberbands attach Glider cradle separated 22 necessary install release servo central point inside wing pre vent uneven separation Glider cradle upon release could result fatal midair accident synchronizing servo linkage two release points essential finished SAC trainer weighs little under 24 lbbig Gliders four-meter 157-in span range first test flight took place April 1989 using four-meter Alpina Glider cargo Since Ive made flights carrying Gliders larger 35 ters 138-in span apparent prob lems tug/Glider duo size works well because combined center-of-gravity re mains should Turns no longer problem flying re lease altitude done tug pilot big biplane-like combination stable docile flight pilot can make low passes before flying Glid ers release altitude Its important keep mind since takeoff weight tug-cum-Glider ex ceeds 30 lb long takeoff roll necessary gain lift-off speed air carrier launching system does what intended greatly extends Glid er flights Spans 20 minutes longer now quite normal An additional reward since system requires minimum two pilots encourages cooperation teamwork Its also crowd pleaser used club demonstrations hope findings will encourage others live areas less ideal conditions launching big thermal Glid ers try piggyback approach can sure tug size rolling lift off four-meter Glider atop awe some sight indeed Super Squire/ Windingland-Daley Continued page 37 Six 1/16 x x 36-in balsacap strips Two 1 x 1 x 12-in balsawing tips Two 4 x 36-in triangle balsabracing 4 x 6 x 12-in plywoodF-l land ing gear brace wing hold-down / x 6 x 12-in plywoodF-2 F-3 hatch dihedral brace Safety/Preston Continued page 22 somewhere connector wiring Sams sons receiver battery pack However big mystery took five days smoke develop Anyway purpose relating two incidents remind Ni-Cd battery pack capable generating enough heat start fire event becomes shorted Its reasonable suggest store batteries away combustibles would mean removing models time return flying session ever careful what you think dead want discard CyA glue accelerators May 90 Safety column mentioned letter Albert Perdon drew attention fact some CyA ac celerators contain chlorofluorocarbons CFCs linked alleged depletion mospheric ozone layer so-called green house effect also mentioned number modelers have respiratory problems resulting use CyA accelerators asked anyone knew nonallergenic accelerator guess should have asked anyone knew commercial source such product because four readers reminded baking soda can used accelerator unlikely cause respiratory problems its also very cheap Jim Wolff Charlie Staunton VAI couldnt read last name both use mixture baking soda water accelera tor However neither Jim nor Charlie stated what proportion baking soda water use 84 Model Aviation TM ~RTM ~ODE 0 S COSPAN GP Marine WildCat Almost Ready Race electric twin knows make fast moves Designed power tremendous maneuverability WildCat will astonish well handles top speed Two powerful Thruatmaster 550 motors custom high-pitch props dual rudders trim tabs enable WildCat sweep through such tight maneuvers l80 turns 4 diameter circleat full throttle can enjoy its responsive action almost immediately WildCats advanced ARR design streamlined ABS hull comes joined deck motors stainless steel drive shafts already installed 2-channel Using photo-illustrated instructions can racing WildCat just few hours Nothing handles like WildCat Pilot stylish twin flaming decals picklefork bow through sharpest course WildCat will dime See hobby dealer write us today Jim said mix small amount water put empty accelerator bottle spray bottle fine spray Charlie reminds us shake container vigorously before use Arizona modeler Doug Huntley enclosed clip ping unidentified source suggests using nasal aspirator blow dry baking soda onto CyA glue joint speed curing pro cess According clipping nasal aspirators babies can obtained variety store about $150 Last letter Harold Melson also uses baking soda cautioned fresh CyA fresh baking soda can boil contact other So dont get body parts Har old also stated baking soda works best thin CyA does respectable job thick varieties expect Ill get letters subject column already overdue editor anyone suggests application method different above Ill include next column fingers prop letter Manuel Ornelas treasurer East Bay Radio Control lers should noted operate Enya four-stroke engines Manuel wrote Without doubt Enya engines some better ones developed RC However fourstroke ones have drawback Due loca tion ol glow plug members almost lost tip index finger After starting engine went pull plug connector plug accidentally put index finger through prop didnt realize what hap pened until blood started running down hand After close examination found about inch index finger about fall off helper determined didnt apply tourniquet right away head hospital might bleed death nasty cut Five stitches two hours later re turned field pick up gear plane Everyone field moaned groaned about engine location plug ought law against such design unfamiliar Enya four-stoke question glow plug located ward side cylinder head angled toward prop arc dont know Id sub scribe suggestion should law against such design however would strongly recommend use remote-type glow plug connector Manuels letter suggested manufacturer might want consider including engine Radio Technique/Myers Continued page 39 what want go can take care small fleet Auto matic Cycler-Charger will simultaneously trickle charge three transmitters five receiver packs makes snarl wires too original purpose Trickler re lease Automatic Cycler-Charger field use think man has Automatic Cycler Charger will buy TrickIer simplify life Compendium Trickler @ $3495 cables $5 CaRa Products Canton SD 57013 tel 1-605-987-5924 neat device available Ace R/C Inc add charger came RC system Its called Add-A-Trickle inex pensive doesnt add significantly wire jungle could buy see ben efits trickle charging cold winter winds blow outside sit testing batteries learning buddy Bob Aberle decided build tiny electric-powered model didnt fly very well took plane home tests few min utes answer him Don Srull Hi Line Ltd PO Box 341283 Bethesda MD 20827 took issue answer led battery testing have known long time capacity battery depends discharge rate since never got electric-powered-air plane movement developmental way done serious testing Electric-power bat teries situation Bobs plane presented itself way batteries using run motor rated 450 mAb dis charged 225-mA rate showed 450-mAb ca pacity discharged 900 mA battery packs contained three cells put two packs series test sixcell pack Charge-A-Matic see May 90 column details Aristo-Craft unit did easily Charge-A-Matic allows program various discharge currents up maximum 36 amps Bobs packs also showed full capacity 36 amps thought packs OK Don Srull thought bad airplanes motor draws approximately 10 amps 30 volts So set up another test using three one-ohm 10-watt power resistors Ra dio Shack parallel draw about 10 amps indicated battery capacity cut half FurtherContinued page 110 July 1990 85 Divinjo, 01 Ureat VIans Model Mfg Co PO Box 755 Urbana IL SISOI 2173672069 ~TM fODnDSTBISUIO C0tp1
Edition: Model Aviation - 1990/07
Page Numbers: 14, 16, 18, 20, 22, 84, 85
John Preston Safety Comes First 5 Pepperaree Ln Sliver Spring MD 20906 column provided address items concern regarding safety aspects model aviation activides Content column however opinion author does necessarily represent official position Academy Model Aeronautics Watch out Any Ni-Cd battery pack can cause serious fire shorted out Cya glue accelera tors Rotating fingerslicers still ELECTRIFYING experience readers have mistaken belief prop being turned electric motor less hazardous ing turned internal combustion engine take look photo accompanying column Thats hand Bob Kopski contributing edi tor MA s RC Electrics column see can assure original color photo Bob enclosed recent letter has impact pun intended Following Bobs explanation happened enclosed photo pretty much shows needs respect Electric well everything else mishap result two situations intermittent economy connec tor some rather embarrassingly poor judge ment part bench test setup 40-size electric motor 10 x 6 wood prop setup cluded associated 18-cell Ni-Cd battery prototype speed control testing ad dition basics full instrumentation measuring current voltage rpm place everything motor would run first reaction somehow might have damaged on-loan speed control began make way through setup knowing included new faulty connector pair Apparently disturbed connector exactly time hand wrong place 3 1 -14 L0OK5 LA E . TERY MVTDDWN may clear photo taken minutes afterward seven slices longest 1% long took estimated 21 milliseconds 0021 seconds io oc pair Electric disastersl left see gruesome looks worse injury hand MAS OWfl Bob Kopaki reultec prop 40-size motor suddenly coming life inopportune moment right remains Bob Afflerbacks electric powered Pattern plane after inflight tire subsequent crash caused shorted Ni-Cd battery cell motors power pack Affler back says hurts ususal because observed unexpectedly high charging current battery before took off flight hindsight realizes should have checked things out carefully before attempting fly again info column 14 Model Aviation cur Despite appearance damage nol too bad being surface hand WHAT WiLL YOU DO FOR 1991 ash current radie system Take chames can still use present radio systems RCD s PLATINUM GRADE AM FM FCC/AMA listed 1991 ivers fit right R/C systems Fly safely bullet-proof receivers NOW D RCD 100* LI RCD 150* LI RCD 200* LI RCD 300* [1 RCD 400* Futobo GAMFutabo JAMFutaba J FMAirtronics AMAirtronks FM *Must sped j channel# order ORDER BY PHONE CA 800 822-1688 US 800 228 -3237 still handle aileron/elevator stick transmitterand mugalmost well before such might very well have case So what its worth read cr5 choose share Im strongly ad vising everyone respectful careful Electric Think little better did sure use quality connectors always thought Electrics less likely cause prop accidents simply because eliminate prop flipping needle valve tweaking other hand fact Elec trics quiet regarded some hav ing little power compared internal combustion engines may lull us false sense security props less hazardous However consider accidental flip switch can result maximum rpm split sec ond potential causing prop-related jury may equal glow engine So volts-and-amps modeler very careful battery pack charged connected Battery pack fires RC models require batter ics Its just Electrics require moreand gen erally biggerbatteries models powered glow engines addition ability re charged times Ni-Cds favored power supply Electrics because abil ity charged discharged high rates current damage other hand following account incident experienced Robert Afflerback illus trates Ni-Cds have limitations Robert enclosed three color pictures dra matically illustrated what happened model battery pack overheated flight due shorted cellsContinued page 18 OR Get RCDs New 1991 -Ready receiver ONLY$7996 OR 2131 Old Oakland Rd Jose CA 95131 1578 Hobby Horn hobby specialties MIUWAY 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 ' have wire tsnding gear pre-bent 1936 FlyIng Quaker 64$6476 1936 Powerhouse 50$2996 1937 Long Cabin 78$4716 1939 T Sportster 50$2996 1937 Quaker Flash 67$4556 1940 Buzzard Bombshell 50 span kit$3596 1937 Air Chief 61$3596 Ruler74. 6 100 Glideran Old Thermlc Timer Sailolanemodlficatlons s own Pd P & W MODEL SERVICE Old Timer kits FE P/C following discount price full kits full kits clude cut parts plan stick sheet wood wire windshield material 1935 MIss America 64$7196 1936 Buccaneer 84$5996 1937 DallaIre 108$7516 1938 Clipper Mk 72$5326 1938 Kioud King 63$4236 1936 Powerhouse 84$5356 1936 Record Breaker 96$6956 1938 Trenton Terror 72$4076 1939 Korda wake 44$1916 1939 Mercury 72$5636 1939 Zipper B4$5356 1940 Ranqer 46$3196 1940 Sailplane 78$8476 1940 So Long 50$3036 1941 Brigidier 56$4076 1941 Super Quaker 76$7276 1941 Playboyjr 54$3116 1941 Playboy Sr 78$7276 1941 Brooklyn Dodner 56$4236 82 Page 1990 CATALOGUn ad 200$2 pp/i sI Class tree $2000 addrequested 1st order $250 $2001 $4500 add $325 $4501 bby Horn S7000 add $375 Over 15173 MON ST4A] $7000 add $450 Calif add 625% Ia, BOX 2212 Send MO VISNMC # &wESTMINSTEACA 92684 ExpI Check tallow up 893-8311 30 days clearanceHours Mon-Fri 9AM checks 16 Model Aviation CA BLUES CA getting down 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 1-800842-7233 Mississippi dial 601-924-9640 VISA MASTERCARD accepted COD add $250 shipping handling included Dealer Inquiries Invited PLU5 NOWATWO TAPE SETI tape youve waiting finally II youre new hobby just want learn secret wood plane construction forYOU PLANE VIDEO Presents BUILDING IT RIGHT THE FIRST TIME FIRST NO-NONSENSE VIDEO OF WOOD AIRCRAFT CONSTRUCTION APPROX 4 HOURS ON e Radio installation 0 Fuel tank installation o Straight wing building e New engine setup o Installing hinges e Futelage construction OShear webbing eSUILDING STRAIGHTl e Applying FG clothe Instulling pushrods e Servo installation0 Covering film e Setting up new radio e Eliminating warps Dozens building tips e Aligning Balancing e Slab tail surfacese Final checkout sAileron installationePLUS MUCH MOREll CREDIT CARD CUSTOMERS Use toll tree number place order Have iS4 MasterCard VISA caIl.24HR5 DAY OR mail $3495 S & H foreign orders add $800 S/Hl PLANE VIDEO MasterCo P0 Box 23128 Clive Iowa 50325 Iowa residents add 4% sales tax PLUMBDUOUELPIOUYDI BUILDAluori TOLL FREEI800J 38382 51ToLL FREE 24HR24 HR OR 15151223-0897 time time have discussed small fires have occurred model airplanes En closed pictures remains 40powered Electric Pattern plane thing will notice fire anything small know magazine doesnt like use color pictures felt black white wouldnt mess justice Sorry about B&W can give RMcM incident occurred March 3 flown airplane about four times con sidering calling day As cleaning up prospective Electric flier asked see airplane fly So dragged out charger connected airplane stood shot breeze about 20 minutes made first mistake returned disconnect battery charger noticed units ammeter indicat ing charge rate about four amps 28 cells airplane never previously able charge higher three amps checked fuselage sides thinking t/ balsa would show excessive heat ran motor check state charge everything seemed OK taxied out took off Shortly after takeoff downwind pass motor just quit Thinking blown fuse cut throttle force habit started turn back runway About halfway around turn onto final saw smoke coming bot tom fuselage radio went fail safe later learned fire burned off receiver antenna point just matter waiting airplane crash model crashed behind rite just off end runway out sight field As everybody started walking crash site some body yelled Weve got fire field LuckContinued page 20 18 Model Aviation CONTROL YOUR MODELS RELIABLY WITH CRYSTALS FROM JAN ALL FREQUENCIES TRANSMIT & RECEIVE QUICK DELIVERY REASONABLE PRICES FOR FREE CATALOG CALL OR WRITE JAN CRYSTALS PO BOX 06017 FORT MYERS FL 33906 813 936-2397 119651VISA TOLL-FREE 1-800-JAN-XTAL 526-9825 FAX ORDERS 1-813-936-3750 K K $1995 IDEO REVIEW THE CLOUD DANCERS INTERNATIONAL H/C SHOW TEAM MEET THE WORLD RENOWNED CLOUD DANCERS SEE THE EXCITING FOOTAGE OF THEIR F-15 EAGLES GIANT SCALE WARBIRDS JUMPERS AND THE FAMOUS FLYING MACHINE MUST FOR YOUR VIDEO COLLECTION! 1 HOUR AND 30 MINUTES OF THE CLOUD DANCERS INACTION FROM BOX TO FINISHED PRODUCT !FL YING! VOLBUILDING SEGMENTS HOBBY LOBbY r trus ros s.u~vLnnIur4; uoj riuRTh WESTS 1/5 SCALE TA LUl Un/Il- IjULUL INNOVATIVE MODELS FOCKE-WULFFWI9OAANDDMODELBOB PARKINSONS VECTOR EAGLEl PLUS TIPS ON SCALE PAINT FINISH APPROXIMATELY 1 HOUR 45 MINUTES SAVE APPROXIMATELY $30000 WITH MANUFACTURERS DISCOUNT COUPONS INCLUDED IN VOLUME 4 $1995 WUNK AVAILABLE ONLY FROM RC VIDEO REVIEW MAGAZINE 13360 KINGSBURY DR WEST PALM BEACH FL 33414 7903435 EACH TAPE $1995 PLUS $250 SHIPPING AND HANDLING CANADIAN ADD $600 FLORIDA ORDERS ADD 6% SALES TAX VISA AND MASTERCHARGE ALSO AVAILABLE ARE VOLUMES 1 AND 2 KING ORANGE AND JETS OVER DELAND NOW AVAILABLE TED AMOUNT OF YEARLY SUBSCRIPTIONS 5 FOR SIX VOLUMES PLUS S & H Sport Scale EXTRA 300 Span 68 700 Sq lbs Now very attractive EXTRA 300 joins DALOTEL 650 CAP 21 ZMPs group 61 -91 powered Sport Scale Aero batic Aircraft Like other 20 AlmostReady-to-Fly models Zimbabwe Model Products range Balsa Kit fea tures accurately framed fuslage plug-in sheeted wings tail feathers scale appearance landing gear epoxy cowl clear canopy Special Introductory Price $22995 gFor details call write ZIMPRO MARKETINO ily other club members fire ex tinguisher pictures show what have left postmortem indicated entire inci dent should filed under stupidity biggest mistake flying airplane after charger showed unexpected increase charge rate Being new Electric flight increased rate didnt strike big problem Also didnt own digital voltmeter charge rate time charge arrived mathemati cally wasnt until after fire discovered ammeter charger reads almost amp low So thought charging three amps 25 minutes really charg ing almost four amps amounts sevenminute overcharge about 17 amp-hours go ing 12-amp-hour cells excessive charge shorted Out two cells started pull normal 25 amps through shorted cells overheated Did learn anything bet did now own good digital voltmeter ters chargers have checked time anything looks funny will take airplane home check out hope experience shorted cell will save some other Electric fliers lot grief Electric fliers arent ones can ex perience fire caused overheated battery pack received two other letters last month non-Electric modelers experienced fires due battery packs becoming shorted first David Burgess described incident volving battery pack cordless drill own words heres what happened About month ago replaced battery Continued page 22 QUADRA RT NEODESHA KS 66757 316325-2821 DEALERS CALL SEND $1 FOR COMPLETE CATALOG DI60ST 6100 AAEngine RF3503I/O 40 SF400141/8 j 60jl255 SF500j55/3200-SOj1570 SF60065/3240-1211575 RF75075/3215/003151075 to&5/SCSi SF000 AdjUOSOle 3/36 Quadra 3140 20 Model Aviation SEE IT ON VIDEO C SUPERTANKS & SUPERMUFFLERS ZINGER WOOD PROPS GIANT SCALE R/C PLANS PO BOX 3076 OAK RIDGE TN 37830 PHONE 615-4824188 tyOOhOOSySSOpOlOOOO1OIS05 Add5200 ship/O19 sod handlisqpiotolod Dual Stnt Nose Gear Fulls Tooling PO Box 95 Champaign IL 61824 pack cordless drill six fresh sub-C Ni Cds discarded old pack 30-gallon plas tic trash can workshop because batter ies would no longer hold charge tents purposes dead other con tents can thought few paper towels couple old catalogs along few balsa scraps working shop much past few weeks didnt re member what else trash can afternoon last week looking something eluded happened think possibly item might have knocked off workbench old steel desk fallen trash can sitting alongside spent few seconds stirring contents can around finding what searching closed up shop went out after noon returned home about four hours later went out shop finished heated air-conditioned 560-sq-ft building backyard opened door greeted clouds thick gray noxious smoke After managed get building ventilated enough able see spotted pile ashes sur rounded burned melted brown plastic mains trash can dumbfounded spent several minutes thinking about what could have caused fire Something remains finally gave answer uminum soft drink can came immediately obvious course rummaging through trash can earlier day moved forgotten aluminum can con tact terminals dead battery pack Apparently enough life generate suf ficient heat set fire papers trash can thank whatever gods watching over day no fire damage building combustible mate rial can its usually full overflowing Im sure fire would have ignited ceiling overhead full gallon fuel just three feet away flight box could have lost thing As did incur loss hundreds perhaps thousands dollars ruined kits balsawood plans tools equipment PVC plastic burns releases hydrochloric acid air soot smoke depos ited onto tools has rusted useless ness have no idea what long-term effect will radio equipment cant imag ine will very good Please warn readers again about danger discarding batteries trash can learned hard way can bet Ill never forget lesson second letter concerned receiver battery pack fire came Sam Blaga Fortunately incident caused no property damage Sam wrote cycled sons Futaba transmitter re ceiver batteries put charge 17 hours rolled up connector wiring tied paper-insulated metal tie put re ceiver batteries receiver charger back paper bag Five days later batteries started smoke time discovered what burning leads melted burnt batter ies hot What caused wires burn dont know son spliced Rx connector new batteries maybe short solder joint certainly seems like short circuit Power easy starting power smooth take offs power intricate maneuvers Red Max makes engine come alive power _____ performance 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 _____ more power fully other _____ 100% money back guaran tee com pletely sat isfied reason Red Max has power better idle better wear char acteristics _____ other fuel 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 qis gals No hand ling charge Freight collect drums Deduct 3% prepay Mix qty Total qty deter mines price SC orders add 5% sales tax Dealer club prices avail Accept credit cards checks COD COD add $2 per canon Personal checks may held until cleared OTY FUEL iGAL 4GAL24GAL6OGAL12SGaI ordered MIXTURE 84GAL jTOTAL$ ________________________________________ DRUM AMT RED MAX PREMIUM FUELI fuel beginners ft sport flyers should use Avail synthetic castor blend RED MAX 094568563560056614300 RED MAX 5109079574572565120004 RED MAX 10129089584580872524972 _______ RED MAX 12144098392886077228192 _______ RED MAX 1515901070101091482031412 _______ RED MAX RACING FUEL Trophy winner planes boats ft cars two boat blends castor ok up 40% nitro REDMAX2O1745124511701125102543185 REDMAX251990142013301284119460272 REDMAX402608193318081716153971708 REDMAXSO3163228321231973176685968 RED MAX 6032202395222521231998100228 RED MAX 8533252500233022212113107404 RED MAX 4-CYCLE FUEL Eliminates detonation ft kickback 4-cycle engines smoother idle ft power 10-4 CYCLE1290 895 845 808 72524972 154 CYCLE1590 1070 1010 914 82031412 RED MAX HELICOPTER FUEL Extremely smooth running extra defoamer drk color special heavy oil helicptrs 10 Helicopter134094589585877527672 iSHelrcopter1640 1120 106098487034112 RED MAX FUEL Continued page 84 RED MAX PERFORMANCE FUEL High flesh point heevy oil use tuned pipes ducted fan ft other heavy dty app 5 Performance114084579577570122704 _______ 10 Performance134094589585877527672 _______ l5Performarrce1640 1120 106096487034112 _______ RED MAX PATrERN FUEL Proven best fuel pettarn engines using pumps end tuned pipe S Pattern1105810760740666120504 lOPattern130591086082374025372 _______ 15 Pattern1605 1085 1025929835 28692 _______ 5UPER TIGER 3000 FUEL Beet fuel Super Tiger 2000-4000 engines ______Super Tiger 3000 1290 695 845 808 725 24972 ______ RED MAX DIESEL FUEL Superior diesel beck list popular demand customers Ball Bearings 1767 1326 1290 1184 1060 DieselPlBee*tgs 1867 1426 1390 1284 1160 SMOKER FLUID beet smoker fluid 2 4 cycle engines Smoker Fluid129089584580872524972 CUSTOM BLENDED FUEL INORDIENTS Available type engine use Call price Mm gallon boatscars-heIicootars-soeadoattern-scala-t4 scale-kavan-ianition-sn3000 PLEASE PRINT BOX aTnFF1Grand Total CITY/STATE ZIP CARD TYPE AND NO EXPIRATION DATE________________ want FAST right out box no other electric comes close GP Marine Stinger Its unique Twinline Drive System turns energy two rugged 550 motors long-lasting water spraying rush power hull designed make its speed easy control Stinger meant raceand win Entirely pre-assembled except required 2-channel radio battery installation Stinger continues blasting through water J LVj j after maneuvers leave its competition bobbing behind Apply included decals sizzling scale appearance youre ready fly See hobby dealer write us today ment has two major benefits First 22-in separation cradle attachment points increases torque Second Glider wing incidence parallel tug wing incidence assures Glid er flying its own weight creating load cradle platforms built can adjusted Gliders wing chords up 14 As two release points rubberbands attach Glider cradle separated 22 necessary install release servo central point inside wing pre vent uneven separation Glider cradle upon release could result fatal midair accident synchronizing servo linkage two release points essential finished SAC trainer weighs little under 24 lbbig Gliders four-meter 157-in span range first test flight took place April 1989 using four-meter Alpina Glider cargo Since Ive made flights carrying Gliders larger 35 ters 138-in span apparent prob lems tug/Glider duo size works well because combined center-of-gravity re mains should Turns no longer problem flying re lease altitude done tug pilot big biplane-like combination stable docile flight pilot can make low passes before flying Glid ers release altitude Its important keep mind since takeoff weight tug-cum-Glider ex ceeds 30 lb long takeoff roll necessary gain lift-off speed air carrier launching system does what intended greatly extends Glid er flights Spans 20 minutes longer now quite normal An additional reward since system requires minimum two pilots encourages cooperation teamwork Its also crowd pleaser used club demonstrations hope findings will encourage others live areas less ideal conditions launching big thermal Glid ers try piggyback approach can sure tug size rolling lift off four-meter Glider atop awe some sight indeed Super Squire/ Windingland-Daley Continued page 37 Six 1/16 x x 36-in balsacap strips Two 1 x 1 x 12-in balsawing tips Two 4 x 36-in triangle balsabracing 4 x 6 x 12-in plywoodF-l land ing gear brace wing hold-down / x 6 x 12-in plywoodF-2 F-3 hatch dihedral brace Safety/Preston Continued page 22 somewhere connector wiring Sams sons receiver battery pack However big mystery took five days smoke develop Anyway purpose relating two incidents remind Ni-Cd battery pack capable generating enough heat start fire event becomes shorted Its reasonable suggest store batteries away combustibles would mean removing models time return flying session ever careful what you think dead want discard CyA glue accelerators May 90 Safety column mentioned letter Albert Perdon drew attention fact some CyA ac celerators contain chlorofluorocarbons CFCs linked alleged depletion mospheric ozone layer so-called green house effect also mentioned number modelers have respiratory problems resulting use CyA accelerators asked anyone knew nonallergenic accelerator guess should have asked anyone knew commercial source such product because four readers reminded baking soda can used accelerator unlikely cause respiratory problems its also very cheap Jim Wolff Charlie Staunton VAI couldnt read last name both use mixture baking soda water accelera tor However neither Jim nor Charlie stated what proportion baking soda water use 84 Model Aviation TM ~RTM ~ODE 0 S COSPAN GP Marine WildCat Almost Ready Race electric twin knows make fast moves Designed power tremendous maneuverability WildCat will astonish well handles top speed Two powerful Thruatmaster 550 motors custom high-pitch props dual rudders trim tabs enable WildCat sweep through such tight maneuvers l80 turns 4 diameter circleat full throttle can enjoy its responsive action almost immediately WildCats advanced ARR design streamlined ABS hull comes joined deck motors stainless steel drive shafts already installed 2-channel Using photo-illustrated instructions can racing WildCat just few hours Nothing handles like WildCat Pilot stylish twin flaming decals picklefork bow through sharpest course WildCat will dime See hobby dealer write us today Jim said mix small amount water put empty accelerator bottle spray bottle fine spray Charlie reminds us shake container vigorously before use Arizona modeler Doug Huntley enclosed clip ping unidentified source suggests using nasal aspirator blow dry baking soda onto CyA glue joint speed curing pro cess According clipping nasal aspirators babies can obtained variety store about $150 Last letter Harold Melson also uses baking soda cautioned fresh CyA fresh baking soda can boil contact other So dont get body parts Har old also stated baking soda works best thin CyA does respectable job thick varieties expect Ill get letters subject column already overdue editor anyone suggests application method different above Ill include next column fingers prop letter Manuel Ornelas treasurer East Bay Radio Control lers should noted operate Enya four-stroke engines Manuel wrote Without doubt Enya engines some better ones developed RC However fourstroke ones have drawback Due loca tion ol glow plug members almost lost tip index finger After starting engine went pull plug connector plug accidentally put index finger through prop didnt realize what hap pened until blood started running down hand After close examination found about inch index finger about fall off helper determined didnt apply tourniquet right away head hospital might bleed death nasty cut Five stitches two hours later re turned field pick up gear plane Everyone field moaned groaned about engine location plug ought law against such design unfamiliar Enya four-stoke question glow plug located ward side cylinder head angled toward prop arc dont know Id sub scribe suggestion should law against such design however would strongly recommend use remote-type glow plug connector Manuels letter suggested manufacturer might want consider including engine Radio Technique/Myers Continued page 39 what want go can take care small fleet Auto matic Cycler-Charger will simultaneously trickle charge three transmitters five receiver packs makes snarl wires too original purpose Trickler re lease Automatic Cycler-Charger field use think man has Automatic Cycler Charger will buy TrickIer simplify life Compendium Trickler @ $3495 cables $5 CaRa Products Canton SD 57013 tel 1-605-987-5924 neat device available Ace R/C Inc add charger came RC system Its called Add-A-Trickle inex pensive doesnt add significantly wire jungle could buy see ben efits trickle charging cold winter winds blow outside sit testing batteries learning buddy Bob Aberle decided build tiny electric-powered model didnt fly very well took plane home tests few min utes answer him Don Srull Hi Line Ltd PO Box 341283 Bethesda MD 20827 took issue answer led battery testing have known long time capacity battery depends discharge rate since never got electric-powered-air plane movement developmental way done serious testing Electric-power bat teries situation Bobs plane presented itself way batteries using run motor rated 450 mAb dis charged 225-mA rate showed 450-mAb ca pacity discharged 900 mA battery packs contained three cells put two packs series test sixcell pack Charge-A-Matic see May 90 column details Aristo-Craft unit did easily Charge-A-Matic allows program various discharge currents up maximum 36 amps Bobs packs also showed full capacity 36 amps thought packs OK Don Srull thought bad airplanes motor draws approximately 10 amps 30 volts So set up another test using three one-ohm 10-watt power resistors Ra dio Shack parallel draw about 10 amps indicated battery capacity cut half FurtherContinued page 110 July 1990 85 Divinjo, 01 Ureat VIans Model Mfg Co PO Box 755 Urbana IL SISOI 2173672069 ~TM fODnDSTBISUIO C0tp1
Edition: Model Aviation - 1990/07
Page Numbers: 14, 16, 18, 20, 22, 84, 85
John Preston Safety Comes First 5 Pepperaree Ln Sliver Spring MD 20906 column provided address items concern regarding safety aspects model aviation activides Content column however opinion author does necessarily represent official position Academy Model Aeronautics Watch out Any Ni-Cd battery pack can cause serious fire shorted out Cya glue accelera tors Rotating fingerslicers still ELECTRIFYING experience readers have mistaken belief prop being turned electric motor less hazardous ing turned internal combustion engine take look photo accompanying column Thats hand Bob Kopski contributing edi tor MA s RC Electrics column see can assure original color photo Bob enclosed recent letter has impact pun intended Following Bobs explanation happened enclosed photo pretty much shows needs respect Electric well everything else mishap result two situations intermittent economy connec tor some rather embarrassingly poor judge ment part bench test setup 40-size electric motor 10 x 6 wood prop setup cluded associated 18-cell Ni-Cd battery prototype speed control testing ad dition basics full instrumentation measuring current voltage rpm place everything motor would run first reaction somehow might have damaged on-loan speed control began make way through setup knowing included new faulty connector pair Apparently disturbed connector exactly time hand wrong place 3 1 -14 L0OK5 LA E . TERY MVTDDWN may clear photo taken minutes afterward seven slices longest 1% long took estimated 21 milliseconds 0021 seconds io oc pair Electric disastersl left see gruesome looks worse injury hand MAS OWfl Bob Kopaki reultec prop 40-size motor suddenly coming life inopportune moment right remains Bob Afflerbacks electric powered Pattern plane after inflight tire subsequent crash caused shorted Ni-Cd battery cell motors power pack Affler back says hurts ususal because observed unexpectedly high charging current battery before took off flight hindsight realizes should have checked things out carefully before attempting fly again info column 14 Model Aviation cur Despite appearance damage nol too bad being surface hand WHAT WiLL YOU DO FOR 1991 ash current radie system Take chames can still use present radio systems RCD s PLATINUM GRADE AM FM FCC/AMA listed 1991 ivers fit right R/C systems Fly safely bullet-proof receivers NOW D RCD 100* LI RCD 150* LI RCD 200* LI RCD 300* [1 RCD 400* Futobo GAMFutabo JAMFutaba J FMAirtronics AMAirtronks FM *Must sped j channel# order ORDER BY PHONE CA 800 822-1688 US 800 228 -3237 still handle aileron/elevator stick transmitterand mugalmost well before such might very well have case So what its worth read cr5 choose share Im strongly ad vising everyone respectful careful Electric Think little better did sure use quality connectors always thought Electrics less likely cause prop accidents simply because eliminate prop flipping needle valve tweaking other hand fact Elec trics quiet regarded some hav ing little power compared internal combustion engines may lull us false sense security props less hazardous However consider accidental flip switch can result maximum rpm split sec ond potential causing prop-related jury may equal glow engine So volts-and-amps modeler very careful battery pack charged connected Battery pack fires RC models require batter ics Its just Electrics require moreand gen erally biggerbatteries models powered glow engines addition ability re charged times Ni-Cds favored power supply Electrics because abil ity charged discharged high rates current damage other hand following account incident experienced Robert Afflerback illus trates Ni-Cds have limitations Robert enclosed three color pictures dra matically illustrated what happened model battery pack overheated flight due shorted cellsContinued page 18 OR Get RCDs New 1991 -Ready receiver ONLY$7996 OR 2131 Old Oakland Rd Jose CA 95131 1578 Hobby Horn hobby specialties MIUWAY 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 ' have wire tsnding gear pre-bent 1936 FlyIng Quaker 64$6476 1936 Powerhouse 50$2996 1937 Long Cabin 78$4716 1939 T Sportster 50$2996 1937 Quaker Flash 67$4556 1940 Buzzard Bombshell 50 span kit$3596 1937 Air Chief 61$3596 Ruler74. 6 100 Glideran Old Thermlc Timer Sailolanemodlficatlons s own Pd P & W MODEL SERVICE Old Timer kits FE P/C following discount price full kits full kits clude cut parts plan stick sheet wood wire windshield material 1935 MIss America 64$7196 1936 Buccaneer 84$5996 1937 DallaIre 108$7516 1938 Clipper Mk 72$5326 1938 Kioud King 63$4236 1936 Powerhouse 84$5356 1936 Record Breaker 96$6956 1938 Trenton Terror 72$4076 1939 Korda wake 44$1916 1939 Mercury 72$5636 1939 Zipper B4$5356 1940 Ranqer 46$3196 1940 Sailplane 78$8476 1940 So Long 50$3036 1941 Brigidier 56$4076 1941 Super Quaker 76$7276 1941 Playboyjr 54$3116 1941 Playboy Sr 78$7276 1941 Brooklyn Dodner 56$4236 82 Page 1990 CATALOGUn ad 200$2 pp/i sI Class tree $2000 addrequested 1st order $250 $2001 $4500 add $325 $4501 bby Horn S7000 add $375 Over 15173 MON ST4A] $7000 add $450 Calif add 625% Ia, BOX 2212 Send MO VISNMC # &wESTMINSTEACA 92684 ExpI Check tallow up 893-8311 30 days clearanceHours Mon-Fri 9AM checks 16 Model Aviation CA BLUES CA getting down 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 1-800842-7233 Mississippi dial 601-924-9640 VISA MASTERCARD accepted COD add $250 shipping handling included Dealer Inquiries Invited PLU5 NOWATWO TAPE SETI tape youve waiting finally II youre new hobby just want learn secret wood plane construction forYOU PLANE VIDEO Presents BUILDING IT RIGHT THE FIRST TIME FIRST NO-NONSENSE VIDEO OF WOOD AIRCRAFT CONSTRUCTION APPROX 4 HOURS ON e Radio installation 0 Fuel tank installation o Straight wing building e New engine setup o Installing hinges e Futelage construction OShear webbing eSUILDING STRAIGHTl e Applying FG clothe Instulling pushrods e Servo installation0 Covering film e Setting up new radio e Eliminating warps Dozens building tips e Aligning Balancing e Slab tail surfacese Final checkout sAileron installationePLUS MUCH MOREll CREDIT CARD CUSTOMERS Use toll tree number place order Have iS4 MasterCard VISA caIl.24HR5 DAY OR mail $3495 S & H foreign orders add $800 S/Hl PLANE VIDEO MasterCo P0 Box 23128 Clive Iowa 50325 Iowa residents add 4% sales tax PLUMBDUOUELPIOUYDI BUILDAluori TOLL FREEI800J 38382 51ToLL FREE 24HR24 HR OR 15151223-0897 time time have discussed small fires have occurred model airplanes En closed pictures remains 40powered Electric Pattern plane thing will notice fire anything small know magazine doesnt like use color pictures felt black white wouldnt mess justice Sorry about B&W can give RMcM incident occurred March 3 flown airplane about four times con sidering calling day As cleaning up prospective Electric flier asked see airplane fly So dragged out charger connected airplane stood shot breeze about 20 minutes made first mistake returned disconnect battery charger noticed units ammeter indicat ing charge rate about four amps 28 cells airplane never previously able charge higher three amps checked fuselage sides thinking t/ balsa would show excessive heat ran motor check state charge everything seemed OK taxied out took off Shortly after takeoff downwind pass motor just quit Thinking blown fuse cut throttle force habit started turn back runway About halfway around turn onto final saw smoke coming bot tom fuselage radio went fail safe later learned fire burned off receiver antenna point just matter waiting airplane crash model crashed behind rite just off end runway out sight field As everybody started walking crash site some body yelled Weve got fire field LuckContinued page 20 18 Model Aviation CONTROL YOUR MODELS RELIABLY WITH CRYSTALS FROM JAN ALL FREQUENCIES TRANSMIT & RECEIVE QUICK DELIVERY REASONABLE PRICES FOR FREE CATALOG CALL OR WRITE JAN CRYSTALS PO BOX 06017 FORT MYERS FL 33906 813 936-2397 119651VISA TOLL-FREE 1-800-JAN-XTAL 526-9825 FAX ORDERS 1-813-936-3750 K K $1995 IDEO REVIEW THE CLOUD DANCERS INTERNATIONAL H/C SHOW TEAM MEET THE WORLD RENOWNED CLOUD DANCERS SEE THE EXCITING FOOTAGE OF THEIR F-15 EAGLES GIANT SCALE WARBIRDS JUMPERS AND THE FAMOUS FLYING MACHINE MUST FOR YOUR VIDEO COLLECTION! 1 HOUR AND 30 MINUTES OF THE CLOUD DANCERS INACTION FROM BOX TO FINISHED PRODUCT !FL YING! VOLBUILDING SEGMENTS HOBBY LOBbY r trus ros s.u~vLnnIur4; uoj riuRTh WESTS 1/5 SCALE TA LUl Un/Il- IjULUL INNOVATIVE MODELS FOCKE-WULFFWI9OAANDDMODELBOB PARKINSONS VECTOR EAGLEl PLUS TIPS ON SCALE PAINT FINISH APPROXIMATELY 1 HOUR 45 MINUTES SAVE APPROXIMATELY $30000 WITH MANUFACTURERS DISCOUNT COUPONS INCLUDED IN VOLUME 4 $1995 WUNK AVAILABLE ONLY FROM RC VIDEO REVIEW MAGAZINE 13360 KINGSBURY DR WEST PALM BEACH FL 33414 7903435 EACH TAPE $1995 PLUS $250 SHIPPING AND HANDLING CANADIAN ADD $600 FLORIDA ORDERS ADD 6% SALES TAX VISA AND MASTERCHARGE ALSO AVAILABLE ARE VOLUMES 1 AND 2 KING ORANGE AND JETS OVER DELAND NOW AVAILABLE TED AMOUNT OF YEARLY SUBSCRIPTIONS 5 FOR SIX VOLUMES PLUS S & H Sport Scale EXTRA 300 Span 68 700 Sq lbs Now very attractive EXTRA 300 joins DALOTEL 650 CAP 21 ZMPs group 61 -91 powered Sport Scale Aero batic Aircraft Like other 20 AlmostReady-to-Fly models Zimbabwe Model Products range Balsa Kit fea tures accurately framed fuslage plug-in sheeted wings tail feathers scale appearance landing gear epoxy cowl clear canopy Special Introductory Price $22995 gFor details call write ZIMPRO MARKETINO ily other club members fire ex tinguisher pictures show what have left postmortem indicated entire inci dent should filed under stupidity biggest mistake flying airplane after charger showed unexpected increase charge rate Being new Electric flight increased rate didnt strike big problem Also didnt own digital voltmeter charge rate time charge arrived mathemati cally wasnt until after fire discovered ammeter charger reads almost amp low So thought charging three amps 25 minutes really charg ing almost four amps amounts sevenminute overcharge about 17 amp-hours go ing 12-amp-hour cells excessive charge shorted Out two cells started pull normal 25 amps through shorted cells overheated Did learn anything bet did now own good digital voltmeter ters chargers have checked time anything looks funny will take airplane home check out hope experience shorted cell will save some other Electric fliers lot grief Electric fliers arent ones can ex perience fire caused overheated battery pack received two other letters last month non-Electric modelers experienced fires due battery packs becoming shorted first David Burgess described incident volving battery pack cordless drill own words heres what happened About month ago replaced battery Continued page 22 QUADRA RT NEODESHA KS 66757 316325-2821 DEALERS CALL SEND $1 FOR COMPLETE CATALOG DI60ST 6100 AAEngine RF3503I/O 40 SF400141/8 j 60jl255 SF500j55/3200-SOj1570 SF60065/3240-1211575 RF75075/3215/003151075 to&5/SCSi SF000 AdjUOSOle 3/36 Quadra 3140 20 Model Aviation SEE IT ON VIDEO C SUPERTANKS & SUPERMUFFLERS ZINGER WOOD PROPS GIANT SCALE R/C PLANS PO BOX 3076 OAK RIDGE TN 37830 PHONE 615-4824188 tyOOhOOSySSOpOlOOOO1OIS05 Add5200 ship/O19 sod handlisqpiotolod Dual Stnt Nose Gear Fulls Tooling PO Box 95 Champaign IL 61824 pack cordless drill six fresh sub-C Ni Cds discarded old pack 30-gallon plas tic trash can workshop because batter ies would no longer hold charge tents purposes dead other con tents can thought few paper towels couple old catalogs along few balsa scraps working shop much past few weeks didnt re member what else trash can afternoon last week looking something eluded happened think possibly item might have knocked off workbench old steel desk fallen trash can sitting alongside spent few seconds stirring contents can around finding what searching closed up shop went out after noon returned home about four hours later went out shop finished heated air-conditioned 560-sq-ft building backyard opened door greeted clouds thick gray noxious smoke After managed get building ventilated enough able see spotted pile ashes sur rounded burned melted brown plastic mains trash can dumbfounded spent several minutes thinking about what could have caused fire Something remains finally gave answer uminum soft drink can came immediately obvious course rummaging through trash can earlier day moved forgotten aluminum can con tact terminals dead battery pack Apparently enough life generate suf ficient heat set fire papers trash can thank whatever gods watching over day no fire damage building combustible mate rial can its usually full overflowing Im sure fire would have ignited ceiling overhead full gallon fuel just three feet away flight box could have lost thing As did incur loss hundreds perhaps thousands dollars ruined kits balsawood plans tools equipment PVC plastic burns releases hydrochloric acid air soot smoke depos ited onto tools has rusted useless ness have no idea what long-term effect will radio equipment cant imag ine will very good Please warn readers again about danger discarding batteries trash can learned hard way can bet Ill never forget lesson second letter concerned receiver battery pack fire came Sam Blaga Fortunately incident caused no property damage Sam wrote cycled sons Futaba transmitter re ceiver batteries put charge 17 hours rolled up connector wiring tied paper-insulated metal tie put re ceiver batteries receiver charger back paper bag Five days later batteries started smoke time discovered what burning leads melted burnt batter ies hot What caused wires burn dont know son spliced Rx connector new batteries maybe short solder joint certainly seems like short circuit Power easy starting power smooth take offs power intricate maneuvers Red Max makes engine come alive power _____ performance 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 _____ more power fully other _____ 100% money back guaran tee com pletely sat isfied reason Red Max has power better idle better wear char acteristics _____ other fuel 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 qis gals No hand ling charge Freight collect drums Deduct 3% prepay Mix qty Total qty deter mines price SC orders add 5% sales tax Dealer club prices avail Accept credit cards checks COD COD add $2 per canon Personal checks may held until cleared OTY FUEL iGAL 4GAL24GAL6OGAL12SGaI ordered MIXTURE 84GAL jTOTAL$ ________________________________________ DRUM AMT RED MAX PREMIUM FUELI fuel beginners ft sport flyers should use Avail synthetic castor blend RED MAX 094568563560056614300 RED MAX 5109079574572565120004 RED MAX 10129089584580872524972 _______ RED MAX 12144098392886077228192 _______ RED MAX 1515901070101091482031412 _______ RED MAX RACING FUEL Trophy winner planes boats ft cars two boat blends castor ok up 40% nitro REDMAX2O1745124511701125102543185 REDMAX251990142013301284119460272 REDMAX402608193318081716153971708 REDMAXSO3163228321231973176685968 RED MAX 6032202395222521231998100228 RED MAX 8533252500233022212113107404 RED MAX 4-CYCLE FUEL Eliminates detonation ft kickback 4-cycle engines smoother idle ft power 10-4 CYCLE1290 895 845 808 72524972 154 CYCLE1590 1070 1010 914 82031412 RED MAX HELICOPTER FUEL Extremely smooth running extra defoamer drk color special heavy oil helicptrs 10 Helicopter134094589585877527672 iSHelrcopter1640 1120 106098487034112 RED MAX FUEL Continued page 84 RED MAX PERFORMANCE FUEL High flesh point heevy oil use tuned pipes ducted fan ft other heavy dty app 5 Performance114084579577570122704 _______ 10 Performance134094589585877527672 _______ l5Performarrce1640 1120 106096487034112 _______ RED MAX PATrERN FUEL Proven best fuel pettarn engines using pumps end tuned pipe S Pattern1105810760740666120504 lOPattern130591086082374025372 _______ 15 Pattern1605 1085 1025929835 28692 _______ 5UPER TIGER 3000 FUEL Beet fuel Super Tiger 2000-4000 engines ______Super Tiger 3000 1290 695 845 808 725 24972 ______ RED MAX DIESEL FUEL Superior diesel beck list popular demand customers Ball Bearings 1767 1326 1290 1184 1060 DieselPlBee*tgs 1867 1426 1390 1284 1160 SMOKER FLUID beet smoker fluid 2 4 cycle engines Smoker Fluid129089584580872524972 CUSTOM BLENDED FUEL INORDIENTS Available type engine use Call price Mm gallon boatscars-heIicootars-soeadoattern-scala-t4 scale-kavan-ianition-sn3000 PLEASE PRINT BOX aTnFF1Grand Total CITY/STATE ZIP CARD TYPE AND NO EXPIRATION DATE________________ want FAST right out box no other electric comes close GP Marine Stinger Its unique Twinline Drive System turns energy two rugged 550 motors long-lasting water spraying rush power hull designed make its speed easy control Stinger meant raceand win Entirely pre-assembled except required 2-channel radio battery installation Stinger continues blasting through water J LVj j after maneuvers leave its competition bobbing behind Apply included decals sizzling scale appearance youre ready fly See hobby dealer write us today ment has two major benefits First 22-in separation cradle attachment points increases torque Second Glider wing incidence parallel tug wing incidence assures Glid er flying its own weight creating load cradle platforms built can adjusted Gliders wing chords up 14 As two release points rubberbands attach Glider cradle separated 22 necessary install release servo central point inside wing pre vent uneven separation Glider cradle upon release could result fatal midair accident synchronizing servo linkage two release points essential finished SAC trainer weighs little under 24 lbbig Gliders four-meter 157-in span range first test flight took place April 1989 using four-meter Alpina Glider cargo Since Ive made flights carrying Gliders larger 35 ters 138-in span apparent prob lems tug/Glider duo size works well because combined center-of-gravity re mains should Turns no longer problem flying re lease altitude done tug pilot big biplane-like combination stable docile flight pilot can make low passes before flying Glid ers release altitude Its important keep mind since takeoff weight tug-cum-Glider ex ceeds 30 lb long takeoff roll necessary gain lift-off speed air carrier launching system does what intended greatly extends Glid er flights Spans 20 minutes longer now quite normal An additional reward since system requires minimum two pilots encourages cooperation teamwork Its also crowd pleaser used club demonstrations hope findings will encourage others live areas less ideal conditions launching big thermal Glid ers try piggyback approach can sure tug size rolling lift off four-meter Glider atop awe some sight indeed Super Squire/ Windingland-Daley Continued page 37 Six 1/16 x x 36-in balsacap strips Two 1 x 1 x 12-in balsawing tips Two 4 x 36-in triangle balsabracing 4 x 6 x 12-in plywoodF-l land ing gear brace wing hold-down / x 6 x 12-in plywoodF-2 F-3 hatch dihedral brace Safety/Preston Continued page 22 somewhere connector wiring Sams sons receiver battery pack However big mystery took five days smoke develop Anyway purpose relating two incidents remind Ni-Cd battery pack capable generating enough heat start fire event becomes shorted Its reasonable suggest store batteries away combustibles would mean removing models time return flying session ever careful what you think dead want discard CyA glue accelerators May 90 Safety column mentioned letter Albert Perdon drew attention fact some CyA ac celerators contain chlorofluorocarbons CFCs linked alleged depletion mospheric ozone layer so-called green house effect also mentioned number modelers have respiratory problems resulting use CyA accelerators asked anyone knew nonallergenic accelerator guess should have asked anyone knew commercial source such product because four readers reminded baking soda can used accelerator unlikely cause respiratory problems its also very cheap Jim Wolff Charlie Staunton VAI couldnt read last name both use mixture baking soda water accelera tor However neither Jim nor Charlie stated what proportion baking soda water use 84 Model Aviation TM ~RTM ~ODE 0 S COSPAN GP Marine WildCat Almost Ready Race electric twin knows make fast moves Designed power tremendous maneuverability WildCat will astonish well handles top speed Two powerful Thruatmaster 550 motors custom high-pitch props dual rudders trim tabs enable WildCat sweep through such tight maneuvers l80 turns 4 diameter circleat full throttle can enjoy its responsive action almost immediately WildCats advanced ARR design streamlined ABS hull comes joined deck motors stainless steel drive shafts already installed 2-channel Using photo-illustrated instructions can racing WildCat just few hours Nothing handles like WildCat Pilot stylish twin flaming decals picklefork bow through sharpest course WildCat will dime See hobby dealer write us today Jim said mix small amount water put empty accelerator bottle spray bottle fine spray Charlie reminds us shake container vigorously before use Arizona modeler Doug Huntley enclosed clip ping unidentified source suggests using nasal aspirator blow dry baking soda onto CyA glue joint speed curing pro cess According clipping nasal aspirators babies can obtained variety store about $150 Last letter Harold Melson also uses baking soda cautioned fresh CyA fresh baking soda can boil contact other So dont get body parts Har old also stated baking soda works best thin CyA does respectable job thick varieties expect Ill get letters subject column already overdue editor anyone suggests application method different above Ill include next column fingers prop letter Manuel Ornelas treasurer East Bay Radio Control lers should noted operate Enya four-stroke engines Manuel wrote Without doubt Enya engines some better ones developed RC However fourstroke ones have drawback Due loca tion ol glow plug members almost lost tip index finger After starting engine went pull plug connector plug accidentally put index finger through prop didnt realize what hap pened until blood started running down hand After close examination found about inch index finger about fall off helper determined didnt apply tourniquet right away head hospital might bleed death nasty cut Five stitches two hours later re turned field pick up gear plane Everyone field moaned groaned about engine location plug ought law against such design unfamiliar Enya four-stoke question glow plug located ward side cylinder head angled toward prop arc dont know Id sub scribe suggestion should law against such design however would strongly recommend use remote-type glow plug connector Manuels letter suggested manufacturer might want consider including engine Radio Technique/Myers Continued page 39 what want go can take care small fleet Auto matic Cycler-Charger will simultaneously trickle charge three transmitters five receiver packs makes snarl wires too original purpose Trickler re lease Automatic Cycler-Charger field use think man has Automatic Cycler Charger will buy TrickIer simplify life Compendium Trickler @ $3495 cables $5 CaRa Products Canton SD 57013 tel 1-605-987-5924 neat device available Ace R/C Inc add charger came RC system Its called Add-A-Trickle inex pensive doesnt add significantly wire jungle could buy see ben efits trickle charging cold winter winds blow outside sit testing batteries learning buddy Bob Aberle decided build tiny electric-powered model didnt fly very well took plane home tests few min utes answer him Don Srull Hi Line Ltd PO Box 341283 Bethesda MD 20827 took issue answer led battery testing have known long time capacity battery depends discharge rate since never got electric-powered-air plane movement developmental way done serious testing Electric-power bat teries situation Bobs plane presented itself way batteries using run motor rated 450 mAb dis charged 225-mA rate showed 450-mAb ca pacity discharged 900 mA battery packs contained three cells put two packs series test sixcell pack Charge-A-Matic see May 90 column details Aristo-Craft unit did easily Charge-A-Matic allows program various discharge currents up maximum 36 amps Bobs packs also showed full capacity 36 amps thought packs OK Don Srull thought bad airplanes motor draws approximately 10 amps 30 volts So set up another test using three one-ohm 10-watt power resistors Ra dio Shack parallel draw about 10 amps indicated battery capacity cut half FurtherContinued page 110 July 1990 85 Divinjo, 01 Ureat VIans Model Mfg Co PO Box 755 Urbana IL SISOI 2173672069 ~TM fODnDSTBISUIO C0tp1
Edition: Model Aviation - 1990/07
Page Numbers: 14, 16, 18, 20, 22, 84, 85
John Preston Safety Comes First 5 Pepperaree Ln Sliver Spring MD 20906 column provided address items concern regarding safety aspects model aviation activides Content column however opinion author does necessarily represent official position Academy Model Aeronautics Watch out Any Ni-Cd battery pack can cause serious fire shorted out Cya glue accelera tors Rotating fingerslicers still ELECTRIFYING experience readers have mistaken belief prop being turned electric motor less hazardous ing turned internal combustion engine take look photo accompanying column Thats hand Bob Kopski contributing edi tor MA s RC Electrics column see can assure original color photo Bob enclosed recent letter has impact pun intended Following Bobs explanation happened enclosed photo pretty much shows needs respect Electric well everything else mishap result two situations intermittent economy connec tor some rather embarrassingly poor judge ment part bench test setup 40-size electric motor 10 x 6 wood prop setup cluded associated 18-cell Ni-Cd battery prototype speed control testing ad dition basics full instrumentation measuring current voltage rpm place everything motor would run first reaction somehow might have damaged on-loan speed control began make way through setup knowing included new faulty connector pair Apparently disturbed connector exactly time hand wrong place 3 1 -14 L0OK5 LA E . TERY MVTDDWN may clear photo taken minutes afterward seven slices longest 1% long took estimated 21 milliseconds 0021 seconds io oc pair Electric disastersl left see gruesome looks worse injury hand MAS OWfl Bob Kopaki reultec prop 40-size motor suddenly coming life inopportune moment right remains Bob Afflerbacks electric powered Pattern plane after inflight tire subsequent crash caused shorted Ni-Cd battery cell motors power pack Affler back says hurts ususal because observed unexpectedly high charging current battery before took off flight hindsight realizes should have checked things out carefully before attempting fly again info column 14 Model Aviation cur Despite appearance damage nol too bad being surface hand WHAT WiLL YOU DO FOR 1991 ash current radie system Take chames can still use present radio systems RCD s PLATINUM GRADE AM FM FCC/AMA listed 1991 ivers fit right R/C systems Fly safely bullet-proof receivers NOW D RCD 100* LI RCD 150* LI RCD 200* LI RCD 300* [1 RCD 400* Futobo GAMFutabo JAMFutaba J FMAirtronics AMAirtronks FM *Must sped j channel# order ORDER BY PHONE CA 800 822-1688 US 800 228 -3237 still handle aileron/elevator stick transmitterand mugalmost well before such might very well have case So what its worth read cr5 choose share Im strongly ad vising everyone respectful careful Electric Think little better did sure use quality connectors always thought Electrics less likely cause prop accidents simply because eliminate prop flipping needle valve tweaking other hand fact Elec trics quiet regarded some hav ing little power compared internal combustion engines may lull us false sense security props less hazardous However consider accidental flip switch can result maximum rpm split sec ond potential causing prop-related jury may equal glow engine So volts-and-amps modeler very careful battery pack charged connected Battery pack fires RC models require batter ics Its just Electrics require moreand gen erally biggerbatteries models powered glow engines addition ability re charged times Ni-Cds favored power supply Electrics because abil ity charged discharged high rates current damage other hand following account incident experienced Robert Afflerback illus trates Ni-Cds have limitations Robert enclosed three color pictures dra matically illustrated what happened model battery pack overheated flight due shorted cellsContinued page 18 OR Get RCDs New 1991 -Ready receiver ONLY$7996 OR 2131 Old Oakland Rd Jose CA 95131 1578 Hobby Horn hobby specialties MIUWAY 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 ' have wire tsnding gear pre-bent 1936 FlyIng Quaker 64$6476 1936 Powerhouse 50$2996 1937 Long Cabin 78$4716 1939 T Sportster 50$2996 1937 Quaker Flash 67$4556 1940 Buzzard Bombshell 50 span kit$3596 1937 Air Chief 61$3596 Ruler74. 6 100 Glideran Old Thermlc Timer Sailolanemodlficatlons s own Pd P & W MODEL SERVICE Old Timer kits FE P/C following discount price full kits full kits clude cut parts plan stick sheet wood wire windshield material 1935 MIss America 64$7196 1936 Buccaneer 84$5996 1937 DallaIre 108$7516 1938 Clipper Mk 72$5326 1938 Kioud King 63$4236 1936 Powerhouse 84$5356 1936 Record Breaker 96$6956 1938 Trenton Terror 72$4076 1939 Korda wake 44$1916 1939 Mercury 72$5636 1939 Zipper B4$5356 1940 Ranqer 46$3196 1940 Sailplane 78$8476 1940 So Long 50$3036 1941 Brigidier 56$4076 1941 Super Quaker 76$7276 1941 Playboyjr 54$3116 1941 Playboy Sr 78$7276 1941 Brooklyn Dodner 56$4236 82 Page 1990 CATALOGUn ad 200$2 pp/i sI Class tree $2000 addrequested 1st order $250 $2001 $4500 add $325 $4501 bby Horn S7000 add $375 Over 15173 MON ST4A] $7000 add $450 Calif add 625% Ia, BOX 2212 Send MO VISNMC # &wESTMINSTEACA 92684 ExpI Check tallow up 893-8311 30 days clearanceHours Mon-Fri 9AM checks 16 Model Aviation CA BLUES CA getting down 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 1-800842-7233 Mississippi dial 601-924-9640 VISA MASTERCARD accepted COD add $250 shipping handling included Dealer Inquiries Invited PLU5 NOWATWO TAPE SETI tape youve waiting finally II youre new hobby just want learn secret wood plane construction forYOU PLANE VIDEO Presents BUILDING IT RIGHT THE FIRST TIME FIRST NO-NONSENSE VIDEO OF WOOD AIRCRAFT CONSTRUCTION APPROX 4 HOURS ON e Radio installation 0 Fuel tank installation o Straight wing building e New engine setup o Installing hinges e Futelage construction OShear webbing eSUILDING STRAIGHTl e Applying FG clothe Instulling pushrods e Servo installation0 Covering film e Setting up new radio e Eliminating warps Dozens building tips e Aligning Balancing e Slab tail surfacese Final checkout sAileron installationePLUS MUCH MOREll CREDIT CARD CUSTOMERS Use toll tree number place order Have iS4 MasterCard VISA caIl.24HR5 DAY OR mail $3495 S & H foreign orders add $800 S/Hl PLANE VIDEO MasterCo P0 Box 23128 Clive Iowa 50325 Iowa residents add 4% sales tax PLUMBDUOUELPIOUYDI BUILDAluori TOLL FREEI800J 38382 51ToLL FREE 24HR24 HR OR 15151223-0897 time time have discussed small fires have occurred model airplanes En closed pictures remains 40powered Electric Pattern plane thing will notice fire anything small know magazine doesnt like use color pictures felt black white wouldnt mess justice Sorry about B&W can give RMcM incident occurred March 3 flown airplane about four times con sidering calling day As cleaning up prospective Electric flier asked see airplane fly So dragged out charger connected airplane stood shot breeze about 20 minutes made first mistake returned disconnect battery charger noticed units ammeter indicat ing charge rate about four amps 28 cells airplane never previously able charge higher three amps checked fuselage sides thinking t/ balsa would show excessive heat ran motor check state charge everything seemed OK taxied out took off Shortly after takeoff downwind pass motor just quit Thinking blown fuse cut throttle force habit started turn back runway About halfway around turn onto final saw smoke coming bot tom fuselage radio went fail safe later learned fire burned off receiver antenna point just matter waiting airplane crash model crashed behind rite just off end runway out sight field As everybody started walking crash site some body yelled Weve got fire field LuckContinued page 20 18 Model Aviation CONTROL YOUR MODELS RELIABLY WITH CRYSTALS FROM JAN ALL FREQUENCIES TRANSMIT & RECEIVE QUICK DELIVERY REASONABLE PRICES FOR FREE CATALOG CALL OR WRITE JAN CRYSTALS PO BOX 06017 FORT MYERS FL 33906 813 936-2397 119651VISA TOLL-FREE 1-800-JAN-XTAL 526-9825 FAX ORDERS 1-813-936-3750 K K $1995 IDEO REVIEW THE CLOUD DANCERS INTERNATIONAL H/C SHOW TEAM MEET THE WORLD RENOWNED CLOUD DANCERS SEE THE EXCITING FOOTAGE OF THEIR F-15 EAGLES GIANT SCALE WARBIRDS JUMPERS AND THE FAMOUS FLYING MACHINE MUST FOR YOUR VIDEO COLLECTION! 1 HOUR AND 30 MINUTES OF THE CLOUD DANCERS INACTION FROM BOX TO FINISHED PRODUCT !FL YING! VOLBUILDING SEGMENTS HOBBY LOBbY r trus ros s.u~vLnnIur4; uoj riuRTh WESTS 1/5 SCALE TA LUl Un/Il- IjULUL INNOVATIVE MODELS FOCKE-WULFFWI9OAANDDMODELBOB PARKINSONS VECTOR EAGLEl PLUS TIPS ON SCALE PAINT FINISH APPROXIMATELY 1 HOUR 45 MINUTES SAVE APPROXIMATELY $30000 WITH MANUFACTURERS DISCOUNT COUPONS INCLUDED IN VOLUME 4 $1995 WUNK AVAILABLE ONLY FROM RC VIDEO REVIEW MAGAZINE 13360 KINGSBURY DR WEST PALM BEACH FL 33414 7903435 EACH TAPE $1995 PLUS $250 SHIPPING AND HANDLING CANADIAN ADD $600 FLORIDA ORDERS ADD 6% SALES TAX VISA AND MASTERCHARGE ALSO AVAILABLE ARE VOLUMES 1 AND 2 KING ORANGE AND JETS OVER DELAND NOW AVAILABLE TED AMOUNT OF YEARLY SUBSCRIPTIONS 5 FOR SIX VOLUMES PLUS S & H Sport Scale EXTRA 300 Span 68 700 Sq lbs Now very attractive EXTRA 300 joins DALOTEL 650 CAP 21 ZMPs group 61 -91 powered Sport Scale Aero batic Aircraft Like other 20 AlmostReady-to-Fly models Zimbabwe Model Products range Balsa Kit fea tures accurately framed fuslage plug-in sheeted wings tail feathers scale appearance landing gear epoxy cowl clear canopy Special Introductory Price $22995 gFor details call write ZIMPRO MARKETINO ily other club members fire ex tinguisher pictures show what have left postmortem indicated entire inci dent should filed under stupidity biggest mistake flying airplane after charger showed unexpected increase charge rate Being new Electric flight increased rate didnt strike big problem Also didnt own digital voltmeter charge rate time charge arrived mathemati cally wasnt until after fire discovered ammeter charger reads almost amp low So thought charging three amps 25 minutes really charg ing almost four amps amounts sevenminute overcharge about 17 amp-hours go ing 12-amp-hour cells excessive charge shorted Out two cells started pull normal 25 amps through shorted cells overheated Did learn anything bet did now own good digital voltmeter ters chargers have checked time anything looks funny will take airplane home check out hope experience shorted cell will save some other Electric fliers lot grief Electric fliers arent ones can ex perience fire caused overheated battery pack received two other letters last month non-Electric modelers experienced fires due battery packs becoming shorted first David Burgess described incident volving battery pack cordless drill own words heres what happened About month ago replaced battery Continued page 22 QUADRA RT NEODESHA KS 66757 316325-2821 DEALERS CALL SEND $1 FOR COMPLETE CATALOG DI60ST 6100 AAEngine RF3503I/O 40 SF400141/8 j 60jl255 SF500j55/3200-SOj1570 SF60065/3240-1211575 RF75075/3215/003151075 to&5/SCSi SF000 AdjUOSOle 3/36 Quadra 3140 20 Model Aviation SEE IT ON VIDEO C SUPERTANKS & SUPERMUFFLERS ZINGER WOOD PROPS GIANT SCALE R/C PLANS PO BOX 3076 OAK RIDGE TN 37830 PHONE 615-4824188 tyOOhOOSySSOpOlOOOO1OIS05 Add5200 ship/O19 sod handlisqpiotolod Dual Stnt Nose Gear Fulls Tooling PO Box 95 Champaign IL 61824 pack cordless drill six fresh sub-C Ni Cds discarded old pack 30-gallon plas tic trash can workshop because batter ies would no longer hold charge tents purposes dead other con tents can thought few paper towels couple old catalogs along few balsa scraps working shop much past few weeks didnt re member what else trash can afternoon last week looking something eluded happened think possibly item might have knocked off workbench old steel desk fallen trash can sitting alongside spent few seconds stirring contents can around finding what searching closed up shop went out after noon returned home about four hours later went out shop finished heated air-conditioned 560-sq-ft building backyard opened door greeted clouds thick gray noxious smoke After managed get building ventilated enough able see spotted pile ashes sur rounded burned melted brown plastic mains trash can dumbfounded spent several minutes thinking about what could have caused fire Something remains finally gave answer uminum soft drink can came immediately obvious course rummaging through trash can earlier day moved forgotten aluminum can con tact terminals dead battery pack Apparently enough life generate suf ficient heat set fire papers trash can thank whatever gods watching over day no fire damage building combustible mate rial can its usually full overflowing Im sure fire would have ignited ceiling overhead full gallon fuel just three feet away flight box could have lost thing As did incur loss hundreds perhaps thousands dollars ruined kits balsawood plans tools equipment PVC plastic burns releases hydrochloric acid air soot smoke depos ited onto tools has rusted useless ness have no idea what long-term effect will radio equipment cant imag ine will very good Please warn readers again about danger discarding batteries trash can learned hard way can bet Ill never forget lesson second letter concerned receiver battery pack fire came Sam Blaga Fortunately incident caused no property damage Sam wrote cycled sons Futaba transmitter re ceiver batteries put charge 17 hours rolled up connector wiring tied paper-insulated metal tie put re ceiver batteries receiver charger back paper bag Five days later batteries started smoke time discovered what burning leads melted burnt batter ies hot What caused wires burn dont know son spliced Rx connector new batteries maybe short solder joint certainly seems like short circuit Power easy starting power smooth take offs power intricate maneuvers Red Max makes engine come alive power _____ performance 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 _____ more power fully other _____ 100% money back guaran tee com pletely sat isfied reason Red Max has power better idle better wear char acteristics _____ other fuel 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 qis gals No hand ling charge Freight collect drums Deduct 3% prepay Mix qty Total qty deter mines price SC orders add 5% sales tax Dealer club prices avail Accept credit cards checks COD COD add $2 per canon Personal checks may held until cleared OTY FUEL iGAL 4GAL24GAL6OGAL12SGaI ordered MIXTURE 84GAL jTOTAL$ ________________________________________ DRUM AMT RED MAX PREMIUM FUELI fuel beginners ft sport flyers should use Avail synthetic castor blend RED MAX 094568563560056614300 RED MAX 5109079574572565120004 RED MAX 10129089584580872524972 _______ RED MAX 12144098392886077228192 _______ RED MAX 1515901070101091482031412 _______ RED MAX RACING FUEL Trophy winner planes boats ft cars two boat blends castor ok up 40% nitro REDMAX2O1745124511701125102543185 REDMAX251990142013301284119460272 REDMAX402608193318081716153971708 REDMAXSO3163228321231973176685968 RED MAX 6032202395222521231998100228 RED MAX 8533252500233022212113107404 RED MAX 4-CYCLE FUEL Eliminates detonation ft kickback 4-cycle engines smoother idle ft power 10-4 CYCLE1290 895 845 808 72524972 154 CYCLE1590 1070 1010 914 82031412 RED MAX HELICOPTER FUEL Extremely smooth running extra defoamer drk color special heavy oil helicptrs 10 Helicopter134094589585877527672 iSHelrcopter1640 1120 106098487034112 RED MAX FUEL Continued page 84 RED MAX PERFORMANCE FUEL High flesh point heevy oil use tuned pipes ducted fan ft other heavy dty app 5 Performance114084579577570122704 _______ 10 Performance134094589585877527672 _______ l5Performarrce1640 1120 106096487034112 _______ RED MAX PATrERN FUEL Proven best fuel pettarn engines using pumps end tuned pipe S Pattern1105810760740666120504 lOPattern130591086082374025372 _______ 15 Pattern1605 1085 1025929835 28692 _______ 5UPER TIGER 3000 FUEL Beet fuel Super Tiger 2000-4000 engines ______Super Tiger 3000 1290 695 845 808 725 24972 ______ RED MAX DIESEL FUEL Superior diesel beck list popular demand customers Ball Bearings 1767 1326 1290 1184 1060 DieselPlBee*tgs 1867 1426 1390 1284 1160 SMOKER FLUID beet smoker fluid 2 4 cycle engines Smoker Fluid129089584580872524972 CUSTOM BLENDED FUEL INORDIENTS Available type engine use Call price Mm gallon boatscars-heIicootars-soeadoattern-scala-t4 scale-kavan-ianition-sn3000 PLEASE PRINT BOX aTnFF1Grand Total CITY/STATE ZIP CARD TYPE AND NO EXPIRATION DATE________________ want FAST right out box no other electric comes close GP Marine Stinger Its unique Twinline Drive System turns energy two rugged 550 motors long-lasting water spraying rush power hull designed make its speed easy control Stinger meant raceand win Entirely pre-assembled except required 2-channel radio battery installation Stinger continues blasting through water J LVj j after maneuvers leave its competition bobbing behind Apply included decals sizzling scale appearance youre ready fly See hobby dealer write us today ment has two major benefits First 22-in separation cradle attachment points increases torque Second Glider wing incidence parallel tug wing incidence assures Glid er flying its own weight creating load cradle platforms built can adjusted Gliders wing chords up 14 As two release points rubberbands attach Glider cradle separated 22 necessary install release servo central point inside wing pre vent uneven separation Glider cradle upon release could result fatal midair accident synchronizing servo linkage two release points essential finished SAC trainer weighs little under 24 lbbig Gliders four-meter 157-in span range first test flight took place April 1989 using four-meter Alpina Glider cargo Since Ive made flights carrying Gliders larger 35 ters 138-in span apparent prob lems tug/Glider duo size works well because combined center-of-gravity re mains should Turns no longer problem flying re lease altitude done tug pilot big biplane-like combination stable docile flight pilot can make low passes before flying Glid ers release altitude Its important keep mind since takeoff weight tug-cum-Glider ex ceeds 30 lb long takeoff roll necessary gain lift-off speed air carrier launching system does what intended greatly extends Glid er flights Spans 20 minutes longer now quite normal An additional reward since system requires minimum two pilots encourages cooperation teamwork Its also crowd pleaser used club demonstrations hope findings will encourage others live areas less ideal conditions launching big thermal Glid ers try piggyback approach can sure tug size rolling lift off four-meter Glider atop awe some sight indeed Super Squire/ Windingland-Daley Continued page 37 Six 1/16 x x 36-in balsacap strips Two 1 x 1 x 12-in balsawing tips Two 4 x 36-in triangle balsabracing 4 x 6 x 12-in plywoodF-l land ing gear brace wing hold-down / x 6 x 12-in plywoodF-2 F-3 hatch dihedral brace Safety/Preston Continued page 22 somewhere connector wiring Sams sons receiver battery pack However big mystery took five days smoke develop Anyway purpose relating two incidents remind Ni-Cd battery pack capable generating enough heat start fire event becomes shorted Its reasonable suggest store batteries away combustibles would mean removing models time return flying session ever careful what you think dead want discard CyA glue accelerators May 90 Safety column mentioned letter Albert Perdon drew attention fact some CyA ac celerators contain chlorofluorocarbons CFCs linked alleged depletion mospheric ozone layer so-called green house effect also mentioned number modelers have respiratory problems resulting use CyA accelerators asked anyone knew nonallergenic accelerator guess should have asked anyone knew commercial source such product because four readers reminded baking soda can used accelerator unlikely cause respiratory problems its also very cheap Jim Wolff Charlie Staunton VAI couldnt read last name both use mixture baking soda water accelera tor However neither Jim nor Charlie stated what proportion baking soda water use 84 Model Aviation TM ~RTM ~ODE 0 S COSPAN GP Marine WildCat Almost Ready Race electric twin knows make fast moves Designed power tremendous maneuverability WildCat will astonish well handles top speed Two powerful Thruatmaster 550 motors custom high-pitch props dual rudders trim tabs enable WildCat sweep through such tight maneuvers l80 turns 4 diameter circleat full throttle can enjoy its responsive action almost immediately WildCats advanced ARR design streamlined ABS hull comes joined deck motors stainless steel drive shafts already installed 2-channel Using photo-illustrated instructions can racing WildCat just few hours Nothing handles like WildCat Pilot stylish twin flaming decals picklefork bow through sharpest course WildCat will dime See hobby dealer write us today Jim said mix small amount water put empty accelerator bottle spray bottle fine spray Charlie reminds us shake container vigorously before use Arizona modeler Doug Huntley enclosed clip ping unidentified source suggests using nasal aspirator blow dry baking soda onto CyA glue joint speed curing pro cess According clipping nasal aspirators babies can obtained variety store about $150 Last letter Harold Melson also uses baking soda cautioned fresh CyA fresh baking soda can boil contact other So dont get body parts Har old also stated baking soda works best thin CyA does respectable job thick varieties expect Ill get letters subject column already overdue editor anyone suggests application method different above Ill include next column fingers prop letter Manuel Ornelas treasurer East Bay Radio Control lers should noted operate Enya four-stroke engines Manuel wrote Without doubt Enya engines some better ones developed RC However fourstroke ones have drawback Due loca tion ol glow plug members almost lost tip index finger After starting engine went pull plug connector plug accidentally put index finger through prop didnt realize what hap pened until blood started running down hand After close examination found about inch index finger about fall off helper determined didnt apply tourniquet right away head hospital might bleed death nasty cut Five stitches two hours later re turned field pick up gear plane Everyone field moaned groaned about engine location plug ought law against such design unfamiliar Enya four-stoke question glow plug located ward side cylinder head angled toward prop arc dont know Id sub scribe suggestion should law against such design however would strongly recommend use remote-type glow plug connector Manuels letter suggested manufacturer might want consider including engine Radio Technique/Myers Continued page 39 what want go can take care small fleet Auto matic Cycler-Charger will simultaneously trickle charge three transmitters five receiver packs makes snarl wires too original purpose Trickler re lease Automatic Cycler-Charger field use think man has Automatic Cycler Charger will buy TrickIer simplify life Compendium Trickler @ $3495 cables $5 CaRa Products Canton SD 57013 tel 1-605-987-5924 neat device available Ace R/C Inc add charger came RC system Its called Add-A-Trickle inex pensive doesnt add significantly wire jungle could buy see ben efits trickle charging cold winter winds blow outside sit testing batteries learning buddy Bob Aberle decided build tiny electric-powered model didnt fly very well took plane home tests few min utes answer him Don Srull Hi Line Ltd PO Box 341283 Bethesda MD 20827 took issue answer led battery testing have known long time capacity battery depends discharge rate since never got electric-powered-air plane movement developmental way done serious testing Electric-power bat teries situation Bobs plane presented itself way batteries using run motor rated 450 mAb dis charged 225-mA rate showed 450-mAb ca pacity discharged 900 mA battery packs contained three cells put two packs series test sixcell pack Charge-A-Matic see May 90 column details Aristo-Craft unit did easily Charge-A-Matic allows program various discharge currents up maximum 36 amps Bobs packs also showed full capacity 36 amps thought packs OK Don Srull thought bad airplanes motor draws approximately 10 amps 30 volts So set up another test using three one-ohm 10-watt power resistors Ra dio Shack parallel draw about 10 amps indicated battery capacity cut half FurtherContinued page 110 July 1990 85 Divinjo, 01 Ureat VIans Model Mfg Co PO Box 755 Urbana IL SISOI 2173672069 ~TM fODnDSTBISUIO C0tp1
Edition: Model Aviation - 1990/07
Page Numbers: 14, 16, 18, 20, 22, 84, 85
John Preston Safety Comes First 5 Pepperaree Ln Sliver Spring MD 20906 column provided address items concern regarding safety aspects model aviation activides Content column however opinion author does necessarily represent official position Academy Model Aeronautics Watch out Any Ni-Cd battery pack can cause serious fire shorted out Cya glue accelera tors Rotating fingerslicers still ELECTRIFYING experience readers have mistaken belief prop being turned electric motor less hazardous ing turned internal combustion engine take look photo accompanying column Thats hand Bob Kopski contributing edi tor MA s RC Electrics column see can assure original color photo Bob enclosed recent letter has impact pun intended Following Bobs explanation happened enclosed photo pretty much shows needs respect Electric well everything else mishap result two situations intermittent economy connec tor some rather embarrassingly poor judge ment part bench test setup 40-size electric motor 10 x 6 wood prop setup cluded associated 18-cell Ni-Cd battery prototype speed control testing ad dition basics full instrumentation measuring current voltage rpm place everything motor would run first reaction somehow might have damaged on-loan speed control began make way through setup knowing included new faulty connector pair Apparently disturbed connector exactly time hand wrong place 3 1 -14 L0OK5 LA E . TERY MVTDDWN may clear photo taken minutes afterward seven slices longest 1% long took estimated 21 milliseconds 0021 seconds io oc pair Electric disastersl left see gruesome looks worse injury hand MAS OWfl Bob Kopaki reultec prop 40-size motor suddenly coming life inopportune moment right remains Bob Afflerbacks electric powered Pattern plane after inflight tire subsequent crash caused shorted Ni-Cd battery cell motors power pack Affler back says hurts ususal because observed unexpectedly high charging current battery before took off flight hindsight realizes should have checked things out carefully before attempting fly again info column 14 Model Aviation cur Despite appearance damage nol too bad being surface hand WHAT WiLL YOU DO FOR 1991 ash current radie system Take chames can still use present radio systems RCD s PLATINUM GRADE AM FM FCC/AMA listed 1991 ivers fit right R/C systems Fly safely bullet-proof receivers NOW D RCD 100* LI RCD 150* LI RCD 200* LI RCD 300* [1 RCD 400* Futobo GAMFutabo JAMFutaba J FMAirtronics AMAirtronks FM *Must sped j channel# order ORDER BY PHONE CA 800 822-1688 US 800 228 -3237 still handle aileron/elevator stick transmitterand mugalmost well before such might very well have case So what its worth read cr5 choose share Im strongly ad vising everyone respectful careful Electric Think little better did sure use quality connectors always thought Electrics less likely cause prop accidents simply because eliminate prop flipping needle valve tweaking other hand fact Elec trics quiet regarded some hav ing little power compared internal combustion engines may lull us false sense security props less hazardous However consider accidental flip switch can result maximum rpm split sec ond potential causing prop-related jury may equal glow engine So volts-and-amps modeler very careful battery pack charged connected Battery pack fires RC models require batter ics Its just Electrics require moreand gen erally biggerbatteries models powered glow engines addition ability re charged times Ni-Cds favored power supply Electrics because abil ity charged discharged high rates current damage other hand following account incident experienced Robert Afflerback illus trates Ni-Cds have limitations Robert enclosed three color pictures dra matically illustrated what happened model battery pack overheated flight due shorted cellsContinued page 18 OR Get RCDs New 1991 -Ready receiver ONLY$7996 OR 2131 Old Oakland Rd Jose CA 95131 1578 Hobby Horn hobby specialties MIUWAY 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 ' have wire tsnding gear pre-bent 1936 FlyIng Quaker 64$6476 1936 Powerhouse 50$2996 1937 Long Cabin 78$4716 1939 T Sportster 50$2996 1937 Quaker Flash 67$4556 1940 Buzzard Bombshell 50 span kit$3596 1937 Air Chief 61$3596 Ruler74. 6 100 Glideran Old Thermlc Timer Sailolanemodlficatlons s own Pd P & W MODEL SERVICE Old Timer kits FE P/C following discount price full kits full kits clude cut parts plan stick sheet wood wire windshield material 1935 MIss America 64$7196 1936 Buccaneer 84$5996 1937 DallaIre 108$7516 1938 Clipper Mk 72$5326 1938 Kioud King 63$4236 1936 Powerhouse 84$5356 1936 Record Breaker 96$6956 1938 Trenton Terror 72$4076 1939 Korda wake 44$1916 1939 Mercury 72$5636 1939 Zipper B4$5356 1940 Ranqer 46$3196 1940 Sailplane 78$8476 1940 So Long 50$3036 1941 Brigidier 56$4076 1941 Super Quaker 76$7276 1941 Playboyjr 54$3116 1941 Playboy Sr 78$7276 1941 Brooklyn Dodner 56$4236 82 Page 1990 CATALOGUn ad 200$2 pp/i sI Class tree $2000 addrequested 1st order $250 $2001 $4500 add $325 $4501 bby Horn S7000 add $375 Over 15173 MON ST4A] $7000 add $450 Calif add 625% Ia, BOX 2212 Send MO VISNMC # &wESTMINSTEACA 92684 ExpI Check tallow up 893-8311 30 days clearanceHours Mon-Fri 9AM checks 16 Model Aviation CA BLUES CA getting down 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 1-800842-7233 Mississippi dial 601-924-9640 VISA MASTERCARD accepted COD add $250 shipping handling included Dealer Inquiries Invited PLU5 NOWATWO TAPE SETI tape youve waiting finally II youre new hobby just want learn secret wood plane construction forYOU PLANE VIDEO Presents BUILDING IT RIGHT THE FIRST TIME FIRST NO-NONSENSE VIDEO OF WOOD AIRCRAFT CONSTRUCTION APPROX 4 HOURS ON e Radio installation 0 Fuel tank installation o Straight wing building e New engine setup o Installing hinges e Futelage construction OShear webbing eSUILDING STRAIGHTl e Applying FG clothe Instulling pushrods e Servo installation0 Covering film e Setting up new radio e Eliminating warps Dozens building tips e Aligning Balancing e Slab tail surfacese Final checkout sAileron installationePLUS MUCH MOREll CREDIT CARD CUSTOMERS Use toll tree number place order Have iS4 MasterCard VISA caIl.24HR5 DAY OR mail $3495 S & H foreign orders add $800 S/Hl PLANE VIDEO MasterCo P0 Box 23128 Clive Iowa 50325 Iowa residents add 4% sales tax PLUMBDUOUELPIOUYDI BUILDAluori TOLL FREEI800J 38382 51ToLL FREE 24HR24 HR OR 15151223-0897 time time have discussed small fires have occurred model airplanes En closed pictures remains 40powered Electric Pattern plane thing will notice fire anything small know magazine doesnt like use color pictures felt black white wouldnt mess justice Sorry about B&W can give RMcM incident occurred March 3 flown airplane about four times con sidering calling day As cleaning up prospective Electric flier asked see airplane fly So dragged out charger connected airplane stood shot breeze about 20 minutes made first mistake returned disconnect battery charger noticed units ammeter indicat ing charge rate about four amps 28 cells airplane never previously able charge higher three amps checked fuselage sides thinking t/ balsa would show excessive heat ran motor check state charge everything seemed OK taxied out took off Shortly after takeoff downwind pass motor just quit Thinking blown fuse cut throttle force habit started turn back runway About halfway around turn onto final saw smoke coming bot tom fuselage radio went fail safe later learned fire burned off receiver antenna point just matter waiting airplane crash model crashed behind rite just off end runway out sight field As everybody started walking crash site some body yelled Weve got fire field LuckContinued page 20 18 Model Aviation CONTROL YOUR MODELS RELIABLY WITH CRYSTALS FROM JAN ALL FREQUENCIES TRANSMIT & RECEIVE QUICK DELIVERY REASONABLE PRICES FOR FREE CATALOG CALL OR WRITE JAN CRYSTALS PO BOX 06017 FORT MYERS FL 33906 813 936-2397 119651VISA TOLL-FREE 1-800-JAN-XTAL 526-9825 FAX ORDERS 1-813-936-3750 K K $1995 IDEO REVIEW THE CLOUD DANCERS INTERNATIONAL H/C SHOW TEAM MEET THE WORLD RENOWNED CLOUD DANCERS SEE THE EXCITING FOOTAGE OF THEIR F-15 EAGLES GIANT SCALE WARBIRDS JUMPERS AND THE FAMOUS FLYING MACHINE MUST FOR YOUR VIDEO COLLECTION! 1 HOUR AND 30 MINUTES OF THE CLOUD DANCERS INACTION FROM BOX TO FINISHED PRODUCT !FL YING! VOLBUILDING SEGMENTS HOBBY LOBbY r trus ros s.u~vLnnIur4; uoj riuRTh WESTS 1/5 SCALE TA LUl Un/Il- IjULUL INNOVATIVE MODELS FOCKE-WULFFWI9OAANDDMODELBOB PARKINSONS VECTOR EAGLEl PLUS TIPS ON SCALE PAINT FINISH APPROXIMATELY 1 HOUR 45 MINUTES SAVE APPROXIMATELY $30000 WITH MANUFACTURERS DISCOUNT COUPONS INCLUDED IN VOLUME 4 $1995 WUNK AVAILABLE ONLY FROM RC VIDEO REVIEW MAGAZINE 13360 KINGSBURY DR WEST PALM BEACH FL 33414 7903435 EACH TAPE $1995 PLUS $250 SHIPPING AND HANDLING CANADIAN ADD $600 FLORIDA ORDERS ADD 6% SALES TAX VISA AND MASTERCHARGE ALSO AVAILABLE ARE VOLUMES 1 AND 2 KING ORANGE AND JETS OVER DELAND NOW AVAILABLE TED AMOUNT OF YEARLY SUBSCRIPTIONS 5 FOR SIX VOLUMES PLUS S & H Sport Scale EXTRA 300 Span 68 700 Sq lbs Now very attractive EXTRA 300 joins DALOTEL 650 CAP 21 ZMPs group 61 -91 powered Sport Scale Aero batic Aircraft Like other 20 AlmostReady-to-Fly models Zimbabwe Model Products range Balsa Kit fea tures accurately framed fuslage plug-in sheeted wings tail feathers scale appearance landing gear epoxy cowl clear canopy Special Introductory Price $22995 gFor details call write ZIMPRO MARKETINO ily other club members fire ex tinguisher pictures show what have left postmortem indicated entire inci dent should filed under stupidity biggest mistake flying airplane after charger showed unexpected increase charge rate Being new Electric flight increased rate didnt strike big problem Also didnt own digital voltmeter charge rate time charge arrived mathemati cally wasnt until after fire discovered ammeter charger reads almost amp low So thought charging three amps 25 minutes really charg ing almost four amps amounts sevenminute overcharge about 17 amp-hours go ing 12-amp-hour cells excessive charge shorted Out two cells started pull normal 25 amps through shorted cells overheated Did learn anything bet did now own good digital voltmeter ters chargers have checked time anything looks funny will take airplane home check out hope experience shorted cell will save some other Electric fliers lot grief Electric fliers arent ones can ex perience fire caused overheated battery pack received two other letters last month non-Electric modelers experienced fires due battery packs becoming shorted first David Burgess described incident volving battery pack cordless drill own words heres what happened About month ago replaced battery Continued page 22 QUADRA RT NEODESHA KS 66757 316325-2821 DEALERS CALL SEND $1 FOR COMPLETE CATALOG DI60ST 6100 AAEngine RF3503I/O 40 SF400141/8 j 60jl255 SF500j55/3200-SOj1570 SF60065/3240-1211575 RF75075/3215/003151075 to&5/SCSi SF000 AdjUOSOle 3/36 Quadra 3140 20 Model Aviation SEE IT ON VIDEO C SUPERTANKS & SUPERMUFFLERS ZINGER WOOD PROPS GIANT SCALE R/C PLANS PO BOX 3076 OAK RIDGE TN 37830 PHONE 615-4824188 tyOOhOOSySSOpOlOOOO1OIS05 Add5200 ship/O19 sod handlisqpiotolod Dual Stnt Nose Gear Fulls Tooling PO Box 95 Champaign IL 61824 pack cordless drill six fresh sub-C Ni Cds discarded old pack 30-gallon plas tic trash can workshop because batter ies would no longer hold charge tents purposes dead other con tents can thought few paper towels couple old catalogs along few balsa scraps working shop much past few weeks didnt re member what else trash can afternoon last week looking something eluded happened think possibly item might have knocked off workbench old steel desk fallen trash can sitting alongside spent few seconds stirring contents can around finding what searching closed up shop went out after noon returned home about four hours later went out shop finished heated air-conditioned 560-sq-ft building backyard opened door greeted clouds thick gray noxious smoke After managed get building ventilated enough able see spotted pile ashes sur rounded burned melted brown plastic mains trash can dumbfounded spent several minutes thinking about what could have caused fire Something remains finally gave answer uminum soft drink can came immediately obvious course rummaging through trash can earlier day moved forgotten aluminum can con tact terminals dead battery pack Apparently enough life generate suf ficient heat set fire papers trash can thank whatever gods watching over day no fire damage building combustible mate rial can its usually full overflowing Im sure fire would have ignited ceiling overhead full gallon fuel just three feet away flight box could have lost thing As did incur loss hundreds perhaps thousands dollars ruined kits balsawood plans tools equipment PVC plastic burns releases hydrochloric acid air soot smoke depos ited onto tools has rusted useless ness have no idea what long-term effect will radio equipment cant imag ine will very good Please warn readers again about danger discarding batteries trash can learned hard way can bet Ill never forget lesson second letter concerned receiver battery pack fire came Sam Blaga Fortunately incident caused no property damage Sam wrote cycled sons Futaba transmitter re ceiver batteries put charge 17 hours rolled up connector wiring tied paper-insulated metal tie put re ceiver batteries receiver charger back paper bag Five days later batteries started smoke time discovered what burning leads melted burnt batter ies hot What caused wires burn dont know son spliced Rx connector new batteries maybe short solder joint certainly seems like short circuit Power easy starting power smooth take offs power intricate maneuvers Red Max makes engine come alive power _____ performance 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 _____ more power fully other _____ 100% money back guaran tee com pletely sat isfied reason Red Max has power better idle better wear char acteristics _____ other fuel 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 qis gals No hand ling charge Freight collect drums Deduct 3% prepay Mix qty Total qty deter mines price SC orders add 5% sales tax Dealer club prices avail Accept credit cards checks COD COD add $2 per canon Personal checks may held until cleared OTY FUEL iGAL 4GAL24GAL6OGAL12SGaI ordered MIXTURE 84GAL jTOTAL$ ________________________________________ DRUM AMT RED MAX PREMIUM FUELI fuel beginners ft sport flyers should use Avail synthetic castor blend RED MAX 094568563560056614300 RED MAX 5109079574572565120004 RED MAX 10129089584580872524972 _______ RED MAX 12144098392886077228192 _______ RED MAX 1515901070101091482031412 _______ RED MAX RACING FUEL Trophy winner planes boats ft cars two boat blends castor ok up 40% nitro REDMAX2O1745124511701125102543185 REDMAX251990142013301284119460272 REDMAX402608193318081716153971708 REDMAXSO3163228321231973176685968 RED MAX 6032202395222521231998100228 RED MAX 8533252500233022212113107404 RED MAX 4-CYCLE FUEL Eliminates detonation ft kickback 4-cycle engines smoother idle ft power 10-4 CYCLE1290 895 845 808 72524972 154 CYCLE1590 1070 1010 914 82031412 RED MAX HELICOPTER FUEL Extremely smooth running extra defoamer drk color special heavy oil helicptrs 10 Helicopter134094589585877527672 iSHelrcopter1640 1120 106098487034112 RED MAX FUEL Continued page 84 RED MAX PERFORMANCE FUEL High flesh point heevy oil use tuned pipes ducted fan ft other heavy dty app 5 Performance114084579577570122704 _______ 10 Performance134094589585877527672 _______ l5Performarrce1640 1120 106096487034112 _______ RED MAX PATrERN FUEL Proven best fuel pettarn engines using pumps end tuned pipe S Pattern1105810760740666120504 lOPattern130591086082374025372 _______ 15 Pattern1605 1085 1025929835 28692 _______ 5UPER TIGER 3000 FUEL Beet fuel Super Tiger 2000-4000 engines ______Super Tiger 3000 1290 695 845 808 725 24972 ______ RED MAX DIESEL FUEL Superior diesel beck list popular demand customers Ball Bearings 1767 1326 1290 1184 1060 DieselPlBee*tgs 1867 1426 1390 1284 1160 SMOKER FLUID beet smoker fluid 2 4 cycle engines Smoker Fluid129089584580872524972 CUSTOM BLENDED FUEL INORDIENTS Available type engine use Call price Mm gallon boatscars-heIicootars-soeadoattern-scala-t4 scale-kavan-ianition-sn3000 PLEASE PRINT BOX aTnFF1Grand Total CITY/STATE ZIP CARD TYPE AND NO EXPIRATION DATE________________ want FAST right out box no other electric comes close GP Marine Stinger Its unique Twinline Drive System turns energy two rugged 550 motors long-lasting water spraying rush power hull designed make its speed easy control Stinger meant raceand win Entirely pre-assembled except required 2-channel radio battery installation Stinger continues blasting through water J LVj j after maneuvers leave its competition bobbing behind Apply included decals sizzling scale appearance youre ready fly See hobby dealer write us today ment has two major benefits First 22-in separation cradle attachment points increases torque Second Glider wing incidence parallel tug wing incidence assures Glid er flying its own weight creating load cradle platforms built can adjusted Gliders wing chords up 14 As two release points rubberbands attach Glider cradle separated 22 necessary install release servo central point inside wing pre vent uneven separation Glider cradle upon release could result fatal midair accident synchronizing servo linkage two release points essential finished SAC trainer weighs little under 24 lbbig Gliders four-meter 157-in span range first test flight took place April 1989 using four-meter Alpina Glider cargo Since Ive made flights carrying Gliders larger 35 ters 138-in span apparent prob lems tug/Glider duo size works well because combined center-of-gravity re mains should Turns no longer problem flying re lease altitude done tug pilot big biplane-like combination stable docile flight pilot can make low passes before flying Glid ers release altitude Its important keep mind since takeoff weight tug-cum-Glider ex ceeds 30 lb long takeoff roll necessary gain lift-off speed air carrier launching system does what intended greatly extends Glid er flights Spans 20 minutes longer now quite normal An additional reward since system requires minimum two pilots encourages cooperation teamwork Its also crowd pleaser used club demonstrations hope findings will encourage others live areas less ideal conditions launching big thermal Glid ers try piggyback approach can sure tug size rolling lift off four-meter Glider atop awe some sight indeed Super Squire/ Windingland-Daley Continued page 37 Six 1/16 x x 36-in balsacap strips Two 1 x 1 x 12-in balsawing tips Two 4 x 36-in triangle balsabracing 4 x 6 x 12-in plywoodF-l land ing gear brace wing hold-down / x 6 x 12-in plywoodF-2 F-3 hatch dihedral brace Safety/Preston Continued page 22 somewhere connector wiring Sams sons receiver battery pack However big mystery took five days smoke develop Anyway purpose relating two incidents remind Ni-Cd battery pack capable generating enough heat start fire event becomes shorted Its reasonable suggest store batteries away combustibles would mean removing models time return flying session ever careful what you think dead want discard CyA glue accelerators May 90 Safety column mentioned letter Albert Perdon drew attention fact some CyA ac celerators contain chlorofluorocarbons CFCs linked alleged depletion mospheric ozone layer so-called green house effect also mentioned number modelers have respiratory problems resulting use CyA accelerators asked anyone knew nonallergenic accelerator guess should have asked anyone knew commercial source such product because four readers reminded baking soda can used accelerator unlikely cause respiratory problems its also very cheap Jim Wolff Charlie Staunton VAI couldnt read last name both use mixture baking soda water accelera tor However neither Jim nor Charlie stated what proportion baking soda water use 84 Model Aviation TM ~RTM ~ODE 0 S COSPAN GP Marine WildCat Almost Ready Race electric twin knows make fast moves Designed power tremendous maneuverability WildCat will astonish well handles top speed Two powerful Thruatmaster 550 motors custom high-pitch props dual rudders trim tabs enable WildCat sweep through such tight maneuvers l80 turns 4 diameter circleat full throttle can enjoy its responsive action almost immediately WildCats advanced ARR design streamlined ABS hull comes joined deck motors stainless steel drive shafts already installed 2-channel Using photo-illustrated instructions can racing WildCat just few hours Nothing handles like WildCat Pilot stylish twin flaming decals picklefork bow through sharpest course WildCat will dime See hobby dealer write us today Jim said mix small amount water put empty accelerator bottle spray bottle fine spray Charlie reminds us shake container vigorously before use Arizona modeler Doug Huntley enclosed clip ping unidentified source suggests using nasal aspirator blow dry baking soda onto CyA glue joint speed curing pro cess According clipping nasal aspirators babies can obtained variety store about $150 Last letter Harold Melson also uses baking soda cautioned fresh CyA fresh baking soda can boil contact other So dont get body parts Har old also stated baking soda works best thin CyA does respectable job thick varieties expect Ill get letters subject column already overdue editor anyone suggests application method different above Ill include next column fingers prop letter Manuel Ornelas treasurer East Bay Radio Control lers should noted operate Enya four-stroke engines Manuel wrote Without doubt Enya engines some better ones developed RC However fourstroke ones have drawback Due loca tion ol glow plug members almost lost tip index finger After starting engine went pull plug connector plug accidentally put index finger through prop didnt realize what hap pened until blood started running down hand After close examination found about inch index finger about fall off helper determined didnt apply tourniquet right away head hospital might bleed death nasty cut Five stitches two hours later re turned field pick up gear plane Everyone field moaned groaned about engine location plug ought law against such design unfamiliar Enya four-stoke question glow plug located ward side cylinder head angled toward prop arc dont know Id sub scribe suggestion should law against such design however would strongly recommend use remote-type glow plug connector Manuels letter suggested manufacturer might want consider including engine Radio Technique/Myers Continued page 39 what want go can take care small fleet Auto matic Cycler-Charger will simultaneously trickle charge three transmitters five receiver packs makes snarl wires too original purpose Trickler re lease Automatic Cycler-Charger field use think man has Automatic Cycler Charger will buy TrickIer simplify life Compendium Trickler @ $3495 cables $5 CaRa Products Canton SD 57013 tel 1-605-987-5924 neat device available Ace R/C Inc add charger came RC system Its called Add-A-Trickle inex pensive doesnt add significantly wire jungle could buy see ben efits trickle charging cold winter winds blow outside sit testing batteries learning buddy Bob Aberle decided build tiny electric-powered model didnt fly very well took plane home tests few min utes answer him Don Srull Hi Line Ltd PO Box 341283 Bethesda MD 20827 took issue answer led battery testing have known long time capacity battery depends discharge rate since never got electric-powered-air plane movement developmental way done serious testing Electric-power bat teries situation Bobs plane presented itself way batteries using run motor rated 450 mAb dis charged 225-mA rate showed 450-mAb ca pacity discharged 900 mA battery packs contained three cells put two packs series test sixcell pack Charge-A-Matic see May 90 column details Aristo-Craft unit did easily Charge-A-Matic allows program various discharge currents up maximum 36 amps Bobs packs also showed full capacity 36 amps thought packs OK Don Srull thought bad airplanes motor draws approximately 10 amps 30 volts So set up another test using three one-ohm 10-watt power resistors Ra dio Shack parallel draw about 10 amps indicated battery capacity cut half FurtherContinued page 110 July 1990 85 Divinjo, 01 Ureat VIans Model Mfg Co PO Box 755 Urbana IL SISOI 2173672069 ~TM fODnDSTBISUIO C0tp1
Edition: Model Aviation - 1990/07
Page Numbers: 14, 16, 18, 20, 22, 84, 85
John Preston Safety Comes First 5 Pepperaree Ln Sliver Spring MD 20906 column provided address items concern regarding safety aspects model aviation activides Content column however opinion author does necessarily represent official position Academy Model Aeronautics Watch out Any Ni-Cd battery pack can cause serious fire shorted out Cya glue accelera tors Rotating fingerslicers still ELECTRIFYING experience readers have mistaken belief prop being turned electric motor less hazardous ing turned internal combustion engine take look photo accompanying column Thats hand Bob Kopski contributing edi tor MA s RC Electrics column see can assure original color photo Bob enclosed recent letter has impact pun intended Following Bobs explanation happened enclosed photo pretty much shows needs respect Electric well everything else mishap result two situations intermittent economy connec tor some rather embarrassingly poor judge ment part bench test setup 40-size electric motor 10 x 6 wood prop setup cluded associated 18-cell Ni-Cd battery prototype speed control testing ad dition basics full instrumentation measuring current voltage rpm place everything motor would run first reaction somehow might have damaged on-loan speed control began make way through setup knowing included new faulty connector pair Apparently disturbed connector exactly time hand wrong place 3 1 -14 L0OK5 LA E . TERY MVTDDWN may clear photo taken minutes afterward seven slices longest 1% long took estimated 21 milliseconds 0021 seconds io oc pair Electric disastersl left see gruesome looks worse injury hand MAS OWfl Bob Kopaki reultec prop 40-size motor suddenly coming life inopportune moment right remains Bob Afflerbacks electric powered Pattern plane after inflight tire subsequent crash caused shorted Ni-Cd battery cell motors power pack Affler back says hurts ususal because observed unexpectedly high charging current battery before took off flight hindsight realizes should have checked things out carefully before attempting fly again info column 14 Model Aviation cur Despite appearance damage nol too bad being surface hand WHAT WiLL YOU DO FOR 1991 ash current radie system Take chames can still use present radio systems RCD s PLATINUM GRADE AM FM FCC/AMA listed 1991 ivers fit right R/C systems Fly safely bullet-proof receivers NOW D RCD 100* LI RCD 150* LI RCD 200* LI RCD 300* [1 RCD 400* Futobo GAMFutabo JAMFutaba J FMAirtronics AMAirtronks FM *Must sped j channel# order ORDER BY PHONE CA 800 822-1688 US 800 228 -3237 still handle aileron/elevator stick transmitterand mugalmost well before such might very well have case So what its worth read cr5 choose share Im strongly ad vising everyone respectful careful Electric Think little better did sure use quality connectors always thought Electrics less likely cause prop accidents simply because eliminate prop flipping needle valve tweaking other hand fact Elec trics quiet regarded some hav ing little power compared internal combustion engines may lull us false sense security props less hazardous However consider accidental flip switch can result maximum rpm split sec ond potential causing prop-related jury may equal glow engine So volts-and-amps modeler very careful battery pack charged connected Battery pack fires RC models require batter ics Its just Electrics require moreand gen erally biggerbatteries models powered glow engines addition ability re charged times Ni-Cds favored power supply Electrics because abil ity charged discharged high rates current damage other hand following account incident experienced Robert Afflerback illus trates Ni-Cds have limitations Robert enclosed three color pictures dra matically illustrated what happened model battery pack overheated flight due shorted cellsContinued page 18 OR Get RCDs New 1991 -Ready receiver ONLY$7996 OR 2131 Old Oakland Rd Jose CA 95131 1578 Hobby Horn hobby specialties MIUWAY 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 ' have wire tsnding gear pre-bent 1936 FlyIng Quaker 64$6476 1936 Powerhouse 50$2996 1937 Long Cabin 78$4716 1939 T Sportster 50$2996 1937 Quaker Flash 67$4556 1940 Buzzard Bombshell 50 span kit$3596 1937 Air Chief 61$3596 Ruler74. 6 100 Glideran Old Thermlc Timer Sailolanemodlficatlons s own Pd P & W MODEL SERVICE Old Timer kits FE P/C following discount price full kits full kits clude cut parts plan stick sheet wood wire windshield material 1935 MIss America 64$7196 1936 Buccaneer 84$5996 1937 DallaIre 108$7516 1938 Clipper Mk 72$5326 1938 Kioud King 63$4236 1936 Powerhouse 84$5356 1936 Record Breaker 96$6956 1938 Trenton Terror 72$4076 1939 Korda wake 44$1916 1939 Mercury 72$5636 1939 Zipper B4$5356 1940 Ranqer 46$3196 1940 Sailplane 78$8476 1940 So Long 50$3036 1941 Brigidier 56$4076 1941 Super Quaker 76$7276 1941 Playboyjr 54$3116 1941 Playboy Sr 78$7276 1941 Brooklyn Dodner 56$4236 82 Page 1990 CATALOGUn ad 200$2 pp/i sI Class tree $2000 addrequested 1st order $250 $2001 $4500 add $325 $4501 bby Horn S7000 add $375 Over 15173 MON ST4A] $7000 add $450 Calif add 625% Ia, BOX 2212 Send MO VISNMC # &wESTMINSTEACA 92684 ExpI Check tallow up 893-8311 30 days clearanceHours Mon-Fri 9AM checks 16 Model Aviation CA BLUES CA getting down 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 1-800842-7233 Mississippi dial 601-924-9640 VISA MASTERCARD accepted COD add $250 shipping handling included Dealer Inquiries Invited PLU5 NOWATWO TAPE SETI tape youve waiting finally II youre new hobby just want learn secret wood plane construction forYOU PLANE VIDEO Presents BUILDING IT RIGHT THE FIRST TIME FIRST NO-NONSENSE VIDEO OF WOOD AIRCRAFT CONSTRUCTION APPROX 4 HOURS ON e Radio installation 0 Fuel tank installation o Straight wing building e New engine setup o Installing hinges e Futelage construction OShear webbing eSUILDING STRAIGHTl e Applying FG clothe Instulling pushrods e Servo installation0 Covering film e Setting up new radio e Eliminating warps Dozens building tips e Aligning Balancing e Slab tail surfacese Final checkout sAileron installationePLUS MUCH MOREll CREDIT CARD CUSTOMERS Use toll tree number place order Have iS4 MasterCard VISA caIl.24HR5 DAY OR mail $3495 S & H foreign orders add $800 S/Hl PLANE VIDEO MasterCo P0 Box 23128 Clive Iowa 50325 Iowa residents add 4% sales tax PLUMBDUOUELPIOUYDI BUILDAluori TOLL FREEI800J 38382 51ToLL FREE 24HR24 HR OR 15151223-0897 time time have discussed small fires have occurred model airplanes En closed pictures remains 40powered Electric Pattern plane thing will notice fire anything small know magazine doesnt like use color pictures felt black white wouldnt mess justice Sorry about B&W can give RMcM incident occurred March 3 flown airplane about four times con sidering calling day As cleaning up prospective Electric flier asked see airplane fly So dragged out charger connected airplane stood shot breeze about 20 minutes made first mistake returned disconnect battery charger noticed units ammeter indicat ing charge rate about four amps 28 cells airplane never previously able charge higher three amps checked fuselage sides thinking t/ balsa would show excessive heat ran motor check state charge everything seemed OK taxied out took off Shortly after takeoff downwind pass motor just quit Thinking blown fuse cut throttle force habit started turn back runway About halfway around turn onto final saw smoke coming bot tom fuselage radio went fail safe later learned fire burned off receiver antenna point just matter waiting airplane crash model crashed behind rite just off end runway out sight field As everybody started walking crash site some body yelled Weve got fire field LuckContinued page 20 18 Model Aviation CONTROL YOUR MODELS RELIABLY WITH CRYSTALS FROM JAN ALL FREQUENCIES TRANSMIT & RECEIVE QUICK DELIVERY REASONABLE PRICES FOR FREE CATALOG CALL OR WRITE JAN CRYSTALS PO BOX 06017 FORT MYERS FL 33906 813 936-2397 119651VISA TOLL-FREE 1-800-JAN-XTAL 526-9825 FAX ORDERS 1-813-936-3750 K K $1995 IDEO REVIEW THE CLOUD DANCERS INTERNATIONAL H/C SHOW TEAM MEET THE WORLD RENOWNED CLOUD DANCERS SEE THE EXCITING FOOTAGE OF THEIR F-15 EAGLES GIANT SCALE WARBIRDS JUMPERS AND THE FAMOUS FLYING MACHINE MUST FOR YOUR VIDEO COLLECTION! 1 HOUR AND 30 MINUTES OF THE CLOUD DANCERS INACTION FROM BOX TO FINISHED PRODUCT !FL YING! VOLBUILDING SEGMENTS HOBBY LOBbY r trus ros s.u~vLnnIur4; uoj riuRTh WESTS 1/5 SCALE TA LUl Un/Il- IjULUL INNOVATIVE MODELS FOCKE-WULFFWI9OAANDDMODELBOB PARKINSONS VECTOR EAGLEl PLUS TIPS ON SCALE PAINT FINISH APPROXIMATELY 1 HOUR 45 MINUTES SAVE APPROXIMATELY $30000 WITH MANUFACTURERS DISCOUNT COUPONS INCLUDED IN VOLUME 4 $1995 WUNK AVAILABLE ONLY FROM RC VIDEO REVIEW MAGAZINE 13360 KINGSBURY DR WEST PALM BEACH FL 33414 7903435 EACH TAPE $1995 PLUS $250 SHIPPING AND HANDLING CANADIAN ADD $600 FLORIDA ORDERS ADD 6% SALES TAX VISA AND MASTERCHARGE ALSO AVAILABLE ARE VOLUMES 1 AND 2 KING ORANGE AND JETS OVER DELAND NOW AVAILABLE TED AMOUNT OF YEARLY SUBSCRIPTIONS 5 FOR SIX VOLUMES PLUS S & H Sport Scale EXTRA 300 Span 68 700 Sq lbs Now very attractive EXTRA 300 joins DALOTEL 650 CAP 21 ZMPs group 61 -91 powered Sport Scale Aero batic Aircraft Like other 20 AlmostReady-to-Fly models Zimbabwe Model Products range Balsa Kit fea tures accurately framed fuslage plug-in sheeted wings tail feathers scale appearance landing gear epoxy cowl clear canopy Special Introductory Price $22995 gFor details call write ZIMPRO MARKETINO ily other club members fire ex tinguisher pictures show what have left postmortem indicated entire inci dent should filed under stupidity biggest mistake flying airplane after charger showed unexpected increase charge rate Being new Electric flight increased rate didnt strike big problem Also didnt own digital voltmeter charge rate time charge arrived mathemati cally wasnt until after fire discovered ammeter charger reads almost amp low So thought charging three amps 25 minutes really charg ing almost four amps amounts sevenminute overcharge about 17 amp-hours go ing 12-amp-hour cells excessive charge shorted Out two cells started pull normal 25 amps through shorted cells overheated Did learn anything bet did now own good digital voltmeter ters chargers have checked time anything looks funny will take airplane home check out hope experience shorted cell will save some other Electric fliers lot grief Electric fliers arent ones can ex perience fire caused overheated battery pack received two other letters last month non-Electric modelers experienced fires due battery packs becoming shorted first David Burgess described incident volving battery pack cordless drill own words heres what happened About month ago replaced battery Continued page 22 QUADRA RT NEODESHA KS 66757 316325-2821 DEALERS CALL SEND $1 FOR COMPLETE CATALOG DI60ST 6100 AAEngine RF3503I/O 40 SF400141/8 j 60jl255 SF500j55/3200-SOj1570 SF60065/3240-1211575 RF75075/3215/003151075 to&5/SCSi SF000 AdjUOSOle 3/36 Quadra 3140 20 Model Aviation SEE IT ON VIDEO C SUPERTANKS & SUPERMUFFLERS ZINGER WOOD PROPS GIANT SCALE R/C PLANS PO BOX 3076 OAK RIDGE TN 37830 PHONE 615-4824188 tyOOhOOSySSOpOlOOOO1OIS05 Add5200 ship/O19 sod handlisqpiotolod Dual Stnt Nose Gear Fulls Tooling PO Box 95 Champaign IL 61824 pack cordless drill six fresh sub-C Ni Cds discarded old pack 30-gallon plas tic trash can workshop because batter ies would no longer hold charge tents purposes dead other con tents can thought few paper towels couple old catalogs along few balsa scraps working shop much past few weeks didnt re member what else trash can afternoon last week looking something eluded happened think possibly item might have knocked off workbench old steel desk fallen trash can sitting alongside spent few seconds stirring contents can around finding what searching closed up shop went out after noon returned home about four hours later went out shop finished heated air-conditioned 560-sq-ft building backyard opened door greeted clouds thick gray noxious smoke After managed get building ventilated enough able see spotted pile ashes sur rounded burned melted brown plastic mains trash can dumbfounded spent several minutes thinking about what could have caused fire Something remains finally gave answer uminum soft drink can came immediately obvious course rummaging through trash can earlier day moved forgotten aluminum can con tact terminals dead battery pack Apparently enough life generate suf ficient heat set fire papers trash can thank whatever gods watching over day no fire damage building combustible mate rial can its usually full overflowing Im sure fire would have ignited ceiling overhead full gallon fuel just three feet away flight box could have lost thing As did incur loss hundreds perhaps thousands dollars ruined kits balsawood plans tools equipment PVC plastic burns releases hydrochloric acid air soot smoke depos ited onto tools has rusted useless ness have no idea what long-term effect will radio equipment cant imag ine will very good Please warn readers again about danger discarding batteries trash can learned hard way can bet Ill never forget lesson second letter concerned receiver battery pack fire came Sam Blaga Fortunately incident caused no property damage Sam wrote cycled sons Futaba transmitter re ceiver batteries put charge 17 hours rolled up connector wiring tied paper-insulated metal tie put re ceiver batteries receiver charger back paper bag Five days later batteries started smoke time discovered what burning leads melted burnt batter ies hot What caused wires burn dont know son spliced Rx connector new batteries maybe short solder joint certainly seems like short circuit Power easy starting power smooth take offs power intricate maneuvers Red Max makes engine come alive power _____ performance 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 _____ more power fully other _____ 100% money back guaran tee com pletely sat isfied reason Red Max has power better idle better wear char acteristics _____ other fuel 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 qis gals No hand ling charge Freight collect drums Deduct 3% prepay Mix qty Total qty deter mines price SC orders add 5% sales tax Dealer club prices avail Accept credit cards checks COD COD add $2 per canon Personal checks may held until cleared OTY FUEL iGAL 4GAL24GAL6OGAL12SGaI ordered MIXTURE 84GAL jTOTAL$ ________________________________________ DRUM AMT RED MAX PREMIUM FUELI fuel beginners ft sport flyers should use Avail synthetic castor blend RED MAX 094568563560056614300 RED MAX 5109079574572565120004 RED MAX 10129089584580872524972 _______ RED MAX 12144098392886077228192 _______ RED MAX 1515901070101091482031412 _______ RED MAX RACING FUEL Trophy winner planes boats ft cars two boat blends castor ok up 40% nitro REDMAX2O1745124511701125102543185 REDMAX251990142013301284119460272 REDMAX402608193318081716153971708 REDMAXSO3163228321231973176685968 RED MAX 6032202395222521231998100228 RED MAX 8533252500233022212113107404 RED MAX 4-CYCLE FUEL Eliminates detonation ft kickback 4-cycle engines smoother idle ft power 10-4 CYCLE1290 895 845 808 72524972 154 CYCLE1590 1070 1010 914 82031412 RED MAX HELICOPTER FUEL Extremely smooth running extra defoamer drk color special heavy oil helicptrs 10 Helicopter134094589585877527672 iSHelrcopter1640 1120 106098487034112 RED MAX FUEL Continued page 84 RED MAX PERFORMANCE FUEL High flesh point heevy oil use tuned pipes ducted fan ft other heavy dty app 5 Performance114084579577570122704 _______ 10 Performance134094589585877527672 _______ l5Performarrce1640 1120 106096487034112 _______ RED MAX PATrERN FUEL Proven best fuel pettarn engines using pumps end tuned pipe S Pattern1105810760740666120504 lOPattern130591086082374025372 _______ 15 Pattern1605 1085 1025929835 28692 _______ 5UPER TIGER 3000 FUEL Beet fuel Super Tiger 2000-4000 engines ______Super Tiger 3000 1290 695 845 808 725 24972 ______ RED MAX DIESEL FUEL Superior diesel beck list popular demand customers Ball Bearings 1767 1326 1290 1184 1060 DieselPlBee*tgs 1867 1426 1390 1284 1160 SMOKER FLUID beet smoker fluid 2 4 cycle engines Smoker Fluid129089584580872524972 CUSTOM BLENDED FUEL INORDIENTS Available type engine use Call price Mm gallon boatscars-heIicootars-soeadoattern-scala-t4 scale-kavan-ianition-sn3000 PLEASE PRINT BOX aTnFF1Grand Total CITY/STATE ZIP CARD TYPE AND NO EXPIRATION DATE________________ want FAST right out box no other electric comes close GP Marine Stinger Its unique Twinline Drive System turns energy two rugged 550 motors long-lasting water spraying rush power hull designed make its speed easy control Stinger meant raceand win Entirely pre-assembled except required 2-channel radio battery installation Stinger continues blasting through water J LVj j after maneuvers leave its competition bobbing behind Apply included decals sizzling scale appearance youre ready fly See hobby dealer write us today ment has two major benefits First 22-in separation cradle attachment points increases torque Second Glider wing incidence parallel tug wing incidence assures Glid er flying its own weight creating load cradle platforms built can adjusted Gliders wing chords up 14 As two release points rubberbands attach Glider cradle separated 22 necessary install release servo central point inside wing pre vent uneven separation Glider cradle upon release could result fatal midair accident synchronizing servo linkage two release points essential finished SAC trainer weighs little under 24 lbbig Gliders four-meter 157-in span range first test flight took place April 1989 using four-meter Alpina Glider cargo Since Ive made flights carrying Gliders larger 35 ters 138-in span apparent prob lems tug/Glider duo size works well because combined center-of-gravity re mains should Turns no longer problem flying re lease altitude done tug pilot big biplane-like combination stable docile flight pilot can make low passes before flying Glid ers release altitude Its important keep mind since takeoff weight tug-cum-Glider ex ceeds 30 lb long takeoff roll necessary gain lift-off speed air carrier launching system does what intended greatly extends Glid er flights Spans 20 minutes longer now quite normal An additional reward since system requires minimum two pilots encourages cooperation teamwork Its also crowd pleaser used club demonstrations hope findings will encourage others live areas less ideal conditions launching big thermal Glid ers try piggyback approach can sure tug size rolling lift off four-meter Glider atop awe some sight indeed Super Squire/ Windingland-Daley Continued page 37 Six 1/16 x x 36-in balsacap strips Two 1 x 1 x 12-in balsawing tips Two 4 x 36-in triangle balsabracing 4 x 6 x 12-in plywoodF-l land ing gear brace wing hold-down / x 6 x 12-in plywoodF-2 F-3 hatch dihedral brace Safety/Preston Continued page 22 somewhere connector wiring Sams sons receiver battery pack However big mystery took five days smoke develop Anyway purpose relating two incidents remind Ni-Cd battery pack capable generating enough heat start fire event becomes shorted Its reasonable suggest store batteries away combustibles would mean removing models time return flying session ever careful what you think dead want discard CyA glue accelerators May 90 Safety column mentioned letter Albert Perdon drew attention fact some CyA ac celerators contain chlorofluorocarbons CFCs linked alleged depletion mospheric ozone layer so-called green house effect also mentioned number modelers have respiratory problems resulting use CyA accelerators asked anyone knew nonallergenic accelerator guess should have asked anyone knew commercial source such product because four readers reminded baking soda can used accelerator unlikely cause respiratory problems its also very cheap Jim Wolff Charlie Staunton VAI couldnt read last name both use mixture baking soda water accelera tor However neither Jim nor Charlie stated what proportion baking soda water use 84 Model Aviation TM ~RTM ~ODE 0 S COSPAN GP Marine WildCat Almost Ready Race electric twin knows make fast moves Designed power tremendous maneuverability WildCat will astonish well handles top speed Two powerful Thruatmaster 550 motors custom high-pitch props dual rudders trim tabs enable WildCat sweep through such tight maneuvers l80 turns 4 diameter circleat full throttle can enjoy its responsive action almost immediately WildCats advanced ARR design streamlined ABS hull comes joined deck motors stainless steel drive shafts already installed 2-channel Using photo-illustrated instructions can racing WildCat just few hours Nothing handles like WildCat Pilot stylish twin flaming decals picklefork bow through sharpest course WildCat will dime See hobby dealer write us today Jim said mix small amount water put empty accelerator bottle spray bottle fine spray Charlie reminds us shake container vigorously before use Arizona modeler Doug Huntley enclosed clip ping unidentified source suggests using nasal aspirator blow dry baking soda onto CyA glue joint speed curing pro cess According clipping nasal aspirators babies can obtained variety store about $150 Last letter Harold Melson also uses baking soda cautioned fresh CyA fresh baking soda can boil contact other So dont get body parts Har old also stated baking soda works best thin CyA does respectable job thick varieties expect Ill get letters subject column already overdue editor anyone suggests application method different above Ill include next column fingers prop letter Manuel Ornelas treasurer East Bay Radio Control lers should noted operate Enya four-stroke engines Manuel wrote Without doubt Enya engines some better ones developed RC However fourstroke ones have drawback Due loca tion ol glow plug members almost lost tip index finger After starting engine went pull plug connector plug accidentally put index finger through prop didnt realize what hap pened until blood started running down hand After close examination found about inch index finger about fall off helper determined didnt apply tourniquet right away head hospital might bleed death nasty cut Five stitches two hours later re turned field pick up gear plane Everyone field moaned groaned about engine location plug ought law against such design unfamiliar Enya four-stoke question glow plug located ward side cylinder head angled toward prop arc dont know Id sub scribe suggestion should law against such design however would strongly recommend use remote-type glow plug connector Manuels letter suggested manufacturer might want consider including engine Radio Technique/Myers Continued page 39 what want go can take care small fleet Auto matic Cycler-Charger will simultaneously trickle charge three transmitters five receiver packs makes snarl wires too original purpose Trickler re lease Automatic Cycler-Charger field use think man has Automatic Cycler Charger will buy TrickIer simplify life Compendium Trickler @ $3495 cables $5 CaRa Products Canton SD 57013 tel 1-605-987-5924 neat device available Ace R/C Inc add charger came RC system Its called Add-A-Trickle inex pensive doesnt add significantly wire jungle could buy see ben efits trickle charging cold winter winds blow outside sit testing batteries learning buddy Bob Aberle decided build tiny electric-powered model didnt fly very well took plane home tests few min utes answer him Don Srull Hi Line Ltd PO Box 341283 Bethesda MD 20827 took issue answer led battery testing have known long time capacity battery depends discharge rate since never got electric-powered-air plane movement developmental way done serious testing Electric-power bat teries situation Bobs plane presented itself way batteries using run motor rated 450 mAb dis charged 225-mA rate showed 450-mAb ca pacity discharged 900 mA battery packs contained three cells put two packs series test sixcell pack Charge-A-Matic see May 90 column details Aristo-Craft unit did easily Charge-A-Matic allows program various discharge currents up maximum 36 amps Bobs packs also showed full capacity 36 amps thought packs OK Don Srull thought bad airplanes motor draws approximately 10 amps 30 volts So set up another test using three one-ohm 10-watt power resistors Ra dio Shack parallel draw about 10 amps indicated battery capacity cut half FurtherContinued page 110 July 1990 85 Divinjo, 01 Ureat VIans Model Mfg Co PO Box 755 Urbana IL SISOI 2173672069 ~TM fODnDSTBISUIO C0tp1
Edition: Model Aviation - 1990/07
Page Numbers: 14, 16, 18, 20, 22, 84, 85
John Preston Safety Comes First 5 Pepperaree Ln Sliver Spring MD 20906 column provided address items concern regarding safety aspects model aviation activides Content column however opinion author does necessarily represent official position Academy Model Aeronautics Watch out Any Ni-Cd battery pack can cause serious fire shorted out Cya glue accelera tors Rotating fingerslicers still ELECTRIFYING experience readers have mistaken belief prop being turned electric motor less hazardous ing turned internal combustion engine take look photo accompanying column Thats hand Bob Kopski contributing edi tor MA s RC Electrics column see can assure original color photo Bob enclosed recent letter has impact pun intended Following Bobs explanation happened enclosed photo pretty much shows needs respect Electric well everything else mishap result two situations intermittent economy connec tor some rather embarrassingly poor judge ment part bench test setup 40-size electric motor 10 x 6 wood prop setup cluded associated 18-cell Ni-Cd battery prototype speed control testing ad dition basics full instrumentation measuring current voltage rpm place everything motor would run first reaction somehow might have damaged on-loan speed control began make way through setup knowing included new faulty connector pair Apparently disturbed connector exactly time hand wrong place 3 1 -14 L0OK5 LA E . TERY MVTDDWN may clear photo taken minutes afterward seven slices longest 1% long took estimated 21 milliseconds 0021 seconds io oc pair Electric disastersl left see gruesome looks worse injury hand MAS OWfl Bob Kopaki reultec prop 40-size motor suddenly coming life inopportune moment right remains Bob Afflerbacks electric powered Pattern plane after inflight tire subsequent crash caused shorted Ni-Cd battery cell motors power pack Affler back says hurts ususal because observed unexpectedly high charging current battery before took off flight hindsight realizes should have checked things out carefully before attempting fly again info column 14 Model Aviation cur Despite appearance damage nol too bad being surface hand WHAT WiLL YOU DO FOR 1991 ash current radie system Take chames can still use present radio systems RCD s PLATINUM GRADE AM FM FCC/AMA listed 1991 ivers fit right R/C systems Fly safely bullet-proof receivers NOW D RCD 100* LI RCD 150* LI RCD 200* LI RCD 300* [1 RCD 400* Futobo GAMFutabo JAMFutaba J FMAirtronics AMAirtronks FM *Must sped j channel# order ORDER BY PHONE CA 800 822-1688 US 800 228 -3237 still handle aileron/elevator stick transmitterand mugalmost well before such might very well have case So what its worth read cr5 choose share Im strongly ad vising everyone respectful careful Electric Think little better did sure use quality connectors always thought Electrics less likely cause prop accidents simply because eliminate prop flipping needle valve tweaking other hand fact Elec trics quiet regarded some hav ing little power compared internal combustion engines may lull us false sense security props less hazardous However consider accidental flip switch can result maximum rpm split sec ond potential causing prop-related jury may equal glow engine So volts-and-amps modeler very careful battery pack charged connected Battery pack fires RC models require batter ics Its just Electrics require moreand gen erally biggerbatteries models powered glow engines addition ability re charged times Ni-Cds favored power supply Electrics because abil ity charged discharged high rates current damage other hand following account incident experienced Robert Afflerback illus trates Ni-Cds have limitations Robert enclosed three color pictures dra matically illustrated what happened model battery pack overheated flight due shorted cellsContinued page 18 OR Get RCDs New 1991 -Ready receiver ONLY$7996 OR 2131 Old Oakland Rd Jose CA 95131 1578 Hobby Horn hobby specialties MIUWAY 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 ' have wire tsnding gear pre-bent 1936 FlyIng Quaker 64$6476 1936 Powerhouse 50$2996 1937 Long Cabin 78$4716 1939 T Sportster 50$2996 1937 Quaker Flash 67$4556 1940 Buzzard Bombshell 50 span kit$3596 1937 Air Chief 61$3596 Ruler74. 6 100 Glideran Old Thermlc Timer Sailolanemodlficatlons s own Pd P & W MODEL SERVICE Old Timer kits FE P/C following discount price full kits full kits clude cut parts plan stick sheet wood wire windshield material 1935 MIss America 64$7196 1936 Buccaneer 84$5996 1937 DallaIre 108$7516 1938 Clipper Mk 72$5326 1938 Kioud King 63$4236 1936 Powerhouse 84$5356 1936 Record Breaker 96$6956 1938 Trenton Terror 72$4076 1939 Korda wake 44$1916 1939 Mercury 72$5636 1939 Zipper B4$5356 1940 Ranqer 46$3196 1940 Sailplane 78$8476 1940 So Long 50$3036 1941 Brigidier 56$4076 1941 Super Quaker 76$7276 1941 Playboyjr 54$3116 1941 Playboy Sr 78$7276 1941 Brooklyn Dodner 56$4236 82 Page 1990 CATALOGUn ad 200$2 pp/i sI Class tree $2000 addrequested 1st order $250 $2001 $4500 add $325 $4501 bby Horn S7000 add $375 Over 15173 MON ST4A] $7000 add $450 Calif add 625% Ia, BOX 2212 Send MO VISNMC # &wESTMINSTEACA 92684 ExpI Check tallow up 893-8311 30 days clearanceHours Mon-Fri 9AM checks 16 Model Aviation CA BLUES CA getting down 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 1-800842-7233 Mississippi dial 601-924-9640 VISA MASTERCARD accepted COD add $250 shipping handling included Dealer Inquiries Invited PLU5 NOWATWO TAPE SETI tape youve waiting finally II youre new hobby just want learn secret wood plane construction forYOU PLANE VIDEO Presents BUILDING IT RIGHT THE FIRST TIME FIRST NO-NONSENSE VIDEO OF WOOD AIRCRAFT CONSTRUCTION APPROX 4 HOURS ON e Radio installation 0 Fuel tank installation o Straight wing building e New engine setup o Installing hinges e Futelage construction OShear webbing eSUILDING STRAIGHTl e Applying FG clothe Instulling pushrods e Servo installation0 Covering film e Setting up new radio e Eliminating warps Dozens building tips e Aligning Balancing e Slab tail surfacese Final checkout sAileron installationePLUS MUCH MOREll CREDIT CARD CUSTOMERS Use toll tree number place order Have iS4 MasterCard VISA caIl.24HR5 DAY OR mail $3495 S & H foreign orders add $800 S/Hl PLANE VIDEO MasterCo P0 Box 23128 Clive Iowa 50325 Iowa residents add 4% sales tax PLUMBDUOUELPIOUYDI BUILDAluori TOLL FREEI800J 38382 51ToLL FREE 24HR24 HR OR 15151223-0897 time time have discussed small fires have occurred model airplanes En closed pictures remains 40powered Electric Pattern plane thing will notice fire anything small know magazine doesnt like use color pictures felt black white wouldnt mess justice Sorry about B&W can give RMcM incident occurred March 3 flown airplane about four times con sidering calling day As cleaning up prospective Electric flier asked see airplane fly So dragged out charger connected airplane stood shot breeze about 20 minutes made first mistake returned disconnect battery charger noticed units ammeter indicat ing charge rate about four amps 28 cells airplane never previously able charge higher three amps checked fuselage sides thinking t/ balsa would show excessive heat ran motor check state charge everything seemed OK taxied out took off Shortly after takeoff downwind pass motor just quit Thinking blown fuse cut throttle force habit started turn back runway About halfway around turn onto final saw smoke coming bot tom fuselage radio went fail safe later learned fire burned off receiver antenna point just matter waiting airplane crash model crashed behind rite just off end runway out sight field As everybody started walking crash site some body yelled Weve got fire field LuckContinued page 20 18 Model Aviation CONTROL YOUR MODELS RELIABLY WITH CRYSTALS FROM JAN ALL FREQUENCIES TRANSMIT & RECEIVE QUICK DELIVERY REASONABLE PRICES FOR FREE CATALOG CALL OR WRITE JAN CRYSTALS PO BOX 06017 FORT MYERS FL 33906 813 936-2397 119651VISA TOLL-FREE 1-800-JAN-XTAL 526-9825 FAX ORDERS 1-813-936-3750 K K $1995 IDEO REVIEW THE CLOUD DANCERS INTERNATIONAL H/C SHOW TEAM MEET THE WORLD RENOWNED CLOUD DANCERS SEE THE EXCITING FOOTAGE OF THEIR F-15 EAGLES GIANT SCALE WARBIRDS JUMPERS AND THE FAMOUS FLYING MACHINE MUST FOR YOUR VIDEO COLLECTION! 1 HOUR AND 30 MINUTES OF THE CLOUD DANCERS INACTION FROM BOX TO FINISHED PRODUCT !FL YING! VOLBUILDING SEGMENTS HOBBY LOBbY r trus ros s.u~vLnnIur4; uoj riuRTh WESTS 1/5 SCALE TA LUl Un/Il- IjULUL INNOVATIVE MODELS FOCKE-WULFFWI9OAANDDMODELBOB PARKINSONS VECTOR EAGLEl PLUS TIPS ON SCALE PAINT FINISH APPROXIMATELY 1 HOUR 45 MINUTES SAVE APPROXIMATELY $30000 WITH MANUFACTURERS DISCOUNT COUPONS INCLUDED IN VOLUME 4 $1995 WUNK AVAILABLE ONLY FROM RC VIDEO REVIEW MAGAZINE 13360 KINGSBURY DR WEST PALM BEACH FL 33414 7903435 EACH TAPE $1995 PLUS $250 SHIPPING AND HANDLING CANADIAN ADD $600 FLORIDA ORDERS ADD 6% SALES TAX VISA AND MASTERCHARGE ALSO AVAILABLE ARE VOLUMES 1 AND 2 KING ORANGE AND JETS OVER DELAND NOW AVAILABLE TED AMOUNT OF YEARLY SUBSCRIPTIONS 5 FOR SIX VOLUMES PLUS S & H Sport Scale EXTRA 300 Span 68 700 Sq lbs Now very attractive EXTRA 300 joins DALOTEL 650 CAP 21 ZMPs group 61 -91 powered Sport Scale Aero batic Aircraft Like other 20 AlmostReady-to-Fly models Zimbabwe Model Products range Balsa Kit fea tures accurately framed fuslage plug-in sheeted wings tail feathers scale appearance landing gear epoxy cowl clear canopy Special Introductory Price $22995 gFor details call write ZIMPRO MARKETINO ily other club members fire ex tinguisher pictures show what have left postmortem indicated entire inci dent should filed under stupidity biggest mistake flying airplane after charger showed unexpected increase charge rate Being new Electric flight increased rate didnt strike big problem Also didnt own digital voltmeter charge rate time charge arrived mathemati cally wasnt until after fire discovered ammeter charger reads almost amp low So thought charging three amps 25 minutes really charg ing almost four amps amounts sevenminute overcharge about 17 amp-hours go ing 12-amp-hour cells excessive charge shorted Out two cells started pull normal 25 amps through shorted cells overheated Did learn anything bet did now own good digital voltmeter ters chargers have checked time anything looks funny will take airplane home check out hope experience shorted cell will save some other Electric fliers lot grief Electric fliers arent ones can ex perience fire caused overheated battery pack received two other letters last month non-Electric modelers experienced fires due battery packs becoming shorted first David Burgess described incident volving battery pack cordless drill own words heres what happened About month ago replaced battery Continued page 22 QUADRA RT NEODESHA KS 66757 316325-2821 DEALERS CALL SEND $1 FOR COMPLETE CATALOG DI60ST 6100 AAEngine RF3503I/O 40 SF400141/8 j 60jl255 SF500j55/3200-SOj1570 SF60065/3240-1211575 RF75075/3215/003151075 to&5/SCSi SF000 AdjUOSOle 3/36 Quadra 3140 20 Model Aviation SEE IT ON VIDEO C SUPERTANKS & SUPERMUFFLERS ZINGER WOOD PROPS GIANT SCALE R/C PLANS PO BOX 3076 OAK RIDGE TN 37830 PHONE 615-4824188 tyOOhOOSySSOpOlOOOO1OIS05 Add5200 ship/O19 sod handlisqpiotolod Dual Stnt Nose Gear Fulls Tooling PO Box 95 Champaign IL 61824 pack cordless drill six fresh sub-C Ni Cds discarded old pack 30-gallon plas tic trash can workshop because batter ies would no longer hold charge tents purposes dead other con tents can thought few paper towels couple old catalogs along few balsa scraps working shop much past few weeks didnt re member what else trash can afternoon last week looking something eluded happened think possibly item might have knocked off workbench old steel desk fallen trash can sitting alongside spent few seconds stirring contents can around finding what searching closed up shop went out after noon returned home about four hours later went out shop finished heated air-conditioned 560-sq-ft building backyard opened door greeted clouds thick gray noxious smoke After managed get building ventilated enough able see spotted pile ashes sur rounded burned melted brown plastic mains trash can dumbfounded spent several minutes thinking about what could have caused fire Something remains finally gave answer uminum soft drink can came immediately obvious course rummaging through trash can earlier day moved forgotten aluminum can con tact terminals dead battery pack Apparently enough life generate suf ficient heat set fire papers trash can thank whatever gods watching over day no fire damage building combustible mate rial can its usually full overflowing Im sure fire would have ignited ceiling overhead full gallon fuel just three feet away flight box could have lost thing As did incur loss hundreds perhaps thousands dollars ruined kits balsawood plans tools equipment PVC plastic burns releases hydrochloric acid air soot smoke depos ited onto tools has rusted useless ness have no idea what long-term effect will radio equipment cant imag ine will very good Please warn readers again about danger discarding batteries trash can learned hard way can bet Ill never forget lesson second letter concerned receiver battery pack fire came Sam Blaga Fortunately incident caused no property damage Sam wrote cycled sons Futaba transmitter re ceiver batteries put charge 17 hours rolled up connector wiring tied paper-insulated metal tie put re ceiver batteries receiver charger back paper bag Five days later batteries started smoke time discovered what burning leads melted burnt batter ies hot What caused wires burn dont know son spliced Rx connector new batteries maybe short solder joint certainly seems like short circuit Power easy starting power smooth take offs power intricate maneuvers Red Max makes engine come alive power _____ performance 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 _____ more power fully other _____ 100% money back guaran tee com pletely sat isfied reason Red Max has power better idle better wear char acteristics _____ other fuel 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 qis gals No hand ling charge Freight collect drums Deduct 3% prepay Mix qty Total qty deter mines price SC orders add 5% sales tax Dealer club prices avail Accept credit cards checks COD COD add $2 per canon Personal checks may held until cleared OTY FUEL iGAL 4GAL24GAL6OGAL12SGaI ordered MIXTURE 84GAL jTOTAL$ ________________________________________ DRUM AMT RED MAX PREMIUM FUELI fuel beginners ft sport flyers should use Avail synthetic castor blend RED MAX 094568563560056614300 RED MAX 5109079574572565120004 RED MAX 10129089584580872524972 _______ RED MAX 12144098392886077228192 _______ RED MAX 1515901070101091482031412 _______ RED MAX RACING FUEL Trophy winner planes boats ft cars two boat blends castor ok up 40% nitro REDMAX2O1745124511701125102543185 REDMAX251990142013301284119460272 REDMAX402608193318081716153971708 REDMAXSO3163228321231973176685968 RED MAX 6032202395222521231998100228 RED MAX 8533252500233022212113107404 RED MAX 4-CYCLE FUEL Eliminates detonation ft kickback 4-cycle engines smoother idle ft power 10-4 CYCLE1290 895 845 808 72524972 154 CYCLE1590 1070 1010 914 82031412 RED MAX HELICOPTER FUEL Extremely smooth running extra defoamer drk color special heavy oil helicptrs 10 Helicopter134094589585877527672 iSHelrcopter1640 1120 106098487034112 RED MAX FUEL Continued page 84 RED MAX PERFORMANCE FUEL High flesh point heevy oil use tuned pipes ducted fan ft other heavy dty app 5 Performance114084579577570122704 _______ 10 Performance134094589585877527672 _______ l5Performarrce1640 1120 106096487034112 _______ RED MAX PATrERN FUEL Proven best fuel pettarn engines using pumps end tuned pipe S Pattern1105810760740666120504 lOPattern130591086082374025372 _______ 15 Pattern1605 1085 1025929835 28692 _______ 5UPER TIGER 3000 FUEL Beet fuel Super Tiger 2000-4000 engines ______Super Tiger 3000 1290 695 845 808 725 24972 ______ RED MAX DIESEL FUEL Superior diesel beck list popular demand customers Ball Bearings 1767 1326 1290 1184 1060 DieselPlBee*tgs 1867 1426 1390 1284 1160 SMOKER FLUID beet smoker fluid 2 4 cycle engines Smoker Fluid129089584580872524972 CUSTOM BLENDED FUEL INORDIENTS Available type engine use Call price Mm gallon boatscars-heIicootars-soeadoattern-scala-t4 scale-kavan-ianition-sn3000 PLEASE PRINT BOX aTnFF1Grand Total CITY/STATE ZIP CARD TYPE AND NO EXPIRATION DATE________________ want FAST right out box no other electric comes close GP Marine Stinger Its unique Twinline Drive System turns energy two rugged 550 motors long-lasting water spraying rush power hull designed make its speed easy control Stinger meant raceand win Entirely pre-assembled except required 2-channel radio battery installation Stinger continues blasting through water J LVj j after maneuvers leave its competition bobbing behind Apply included decals sizzling scale appearance youre ready fly See hobby dealer write us today ment has two major benefits First 22-in separation cradle attachment points increases torque Second Glider wing incidence parallel tug wing incidence assures Glid er flying its own weight creating load cradle platforms built can adjusted Gliders wing chords up 14 As two release points rubberbands attach Glider cradle separated 22 necessary install release servo central point inside wing pre vent uneven separation Glider cradle upon release could result fatal midair accident synchronizing servo linkage two release points essential finished SAC trainer weighs little under 24 lbbig Gliders four-meter 157-in span range first test flight took place April 1989 using four-meter Alpina Glider cargo Since Ive made flights carrying Gliders larger 35 ters 138-in span apparent prob lems tug/Glider duo size works well because combined center-of-gravity re mains should Turns no longer problem flying re lease altitude done tug pilot big biplane-like combination stable docile flight pilot can make low passes before flying Glid ers release altitude Its important keep mind since takeoff weight tug-cum-Glider ex ceeds 30 lb long takeoff roll necessary gain lift-off speed air carrier launching system does what intended greatly extends Glid er flights Spans 20 minutes longer now quite normal An additional reward since system requires minimum two pilots encourages cooperation teamwork Its also crowd pleaser used club demonstrations hope findings will encourage others live areas less ideal conditions launching big thermal Glid ers try piggyback approach can sure tug size rolling lift off four-meter Glider atop awe some sight indeed Super Squire/ Windingland-Daley Continued page 37 Six 1/16 x x 36-in balsacap strips Two 1 x 1 x 12-in balsawing tips Two 4 x 36-in triangle balsabracing 4 x 6 x 12-in plywoodF-l land ing gear brace wing hold-down / x 6 x 12-in plywoodF-2 F-3 hatch dihedral brace Safety/Preston Continued page 22 somewhere connector wiring Sams sons receiver battery pack However big mystery took five days smoke develop Anyway purpose relating two incidents remind Ni-Cd battery pack capable generating enough heat start fire event becomes shorted Its reasonable suggest store batteries away combustibles would mean removing models time return flying session ever careful what you think dead want discard CyA glue accelerators May 90 Safety column mentioned letter Albert Perdon drew attention fact some CyA ac celerators contain chlorofluorocarbons CFCs linked alleged depletion mospheric ozone layer so-called green house effect also mentioned number modelers have respiratory problems resulting use CyA accelerators asked anyone knew nonallergenic accelerator guess should have asked anyone knew commercial source such product because four readers reminded baking soda can used accelerator unlikely cause respiratory problems its also very cheap Jim Wolff Charlie Staunton VAI couldnt read last name both use mixture baking soda water accelera tor However neither Jim nor Charlie stated what proportion baking soda water use 84 Model Aviation TM ~RTM ~ODE 0 S COSPAN GP Marine WildCat Almost Ready Race electric twin knows make fast moves Designed power tremendous maneuverability WildCat will astonish well handles top speed Two powerful Thruatmaster 550 motors custom high-pitch props dual rudders trim tabs enable WildCat sweep through such tight maneuvers l80 turns 4 diameter circleat full throttle can enjoy its responsive action almost immediately WildCats advanced ARR design streamlined ABS hull comes joined deck motors stainless steel drive shafts already installed 2-channel Using photo-illustrated instructions can racing WildCat just few hours Nothing handles like WildCat Pilot stylish twin flaming decals picklefork bow through sharpest course WildCat will dime See hobby dealer write us today Jim said mix small amount water put empty accelerator bottle spray bottle fine spray Charlie reminds us shake container vigorously before use Arizona modeler Doug Huntley enclosed clip ping unidentified source suggests using nasal aspirator blow dry baking soda onto CyA glue joint speed curing pro cess According clipping nasal aspirators babies can obtained variety store about $150 Last letter Harold Melson also uses baking soda cautioned fresh CyA fresh baking soda can boil contact other So dont get body parts Har old also stated baking soda works best thin CyA does respectable job thick varieties expect Ill get letters subject column already overdue editor anyone suggests application method different above Ill include next column fingers prop letter Manuel Ornelas treasurer East Bay Radio Control lers should noted operate Enya four-stroke engines Manuel wrote Without doubt Enya engines some better ones developed RC However fourstroke ones have drawback Due loca tion ol glow plug members almost lost tip index finger After starting engine went pull plug connector plug accidentally put index finger through prop didnt realize what hap pened until blood started running down hand After close examination found about inch index finger about fall off helper determined didnt apply tourniquet right away head hospital might bleed death nasty cut Five stitches two hours later re turned field pick up gear plane Everyone field moaned groaned about engine location plug ought law against such design unfamiliar Enya four-stoke question glow plug located ward side cylinder head angled toward prop arc dont know Id sub scribe suggestion should law against such design however would strongly recommend use remote-type glow plug connector Manuels letter suggested manufacturer might want consider including engine Radio Technique/Myers Continued page 39 what want go can take care small fleet Auto matic Cycler-Charger will simultaneously trickle charge three transmitters five receiver packs makes snarl wires too original purpose Trickler re lease Automatic Cycler-Charger field use think man has Automatic Cycler Charger will buy TrickIer simplify life Compendium Trickler @ $3495 cables $5 CaRa Products Canton SD 57013 tel 1-605-987-5924 neat device available Ace R/C Inc add charger came RC system Its called Add-A-Trickle inex pensive doesnt add significantly wire jungle could buy see ben efits trickle charging cold winter winds blow outside sit testing batteries learning buddy Bob Aberle decided build tiny electric-powered model didnt fly very well took plane home tests few min utes answer him Don Srull Hi Line Ltd PO Box 341283 Bethesda MD 20827 took issue answer led battery testing have known long time capacity battery depends discharge rate since never got electric-powered-air plane movement developmental way done serious testing Electric-power bat teries situation Bobs plane presented itself way batteries using run motor rated 450 mAb dis charged 225-mA rate showed 450-mAb ca pacity discharged 900 mA battery packs contained three cells put two packs series test sixcell pack Charge-A-Matic see May 90 column details Aristo-Craft unit did easily Charge-A-Matic allows program various discharge currents up maximum 36 amps Bobs packs also showed full capacity 36 amps thought packs OK Don Srull thought bad airplanes motor draws approximately 10 amps 30 volts So set up another test using three one-ohm 10-watt power resistors Ra dio Shack parallel draw about 10 amps indicated battery capacity cut half FurtherContinued page 110 July 1990 85 Divinjo, 01 Ureat VIans Model Mfg Co PO Box 755 Urbana IL SISOI 2173672069 ~TM fODnDSTBISUIO C0tp1