LETS OPEN follow-up last months column issue discussed Electric col umn November 88 Model Builder Mitch Poling reference charac terization motors readers technically inclined Now wish refer ence December 88 issue MB continu ing info same subject also aithored Mitch Im sure will find topi cal area much interest Readers interests vary great deal evi denced incoming mail fact very wide spread interest has always present range covers very simplest Electric mattersthings take granted stop others coldto advanced techni cal issues such just referenced try cover wide variety column over period time course readers would always like see attention dedicated partic ular interestssomething contradictory something everyone format general things dont eventually get cover certain specialized topics have no fa miliarity Thats just way its gotta folks respect latter statement occasion ally someone writes specialized interest perhaps Helicopter FAI Giant Scale Elec tric Whatever inquiry dont have famili arity matter Ill always try refer writer someone does So dont see something covered column want know about please write include SASE please Ill best provide direct swer least reference can neither Ill tell too PT Electric Great Planes proving very good performer locally Ive flown sev eral have seen dont fly well would hesitate recommend model kit instructions excellent months photos details PT struc ture happens same model raffled off September 1988 Electric Fly Lo cal expert Fred Ewing built kit did devi ate slightly written instructions Specifi cally preferred cover tail assembly separate item attach completed covered fuselage structure instructions de scribe covering horizontal vertical tail surfaces glued place fuselage Per sonally always cover separately leaving necessary wood exposed uncovered glue joint Fred tells otherwise did follow plans quite closely weighing components went along directed instructions Following weight guidelines having installed minisized RC flight system came out almost two ounces less recommended seven-cell tar get weight 50 oz all-up weight 48 Both us flight tested plane week before meet flew just great PT has interesting behavior characteris ticthe way lands model designed trike gear having nose gear fixed steerable Landings breeze begin ners plane just seems touch down Goldbergs Electric Power Pod kit detailed instructions structure cowling motor prop spinner has provision internal motor control servo Pods usable 2-Meter Gliders 6-cell 12 Ah Ni-Cd battery pack included mounts Gliders fuselage 54 Model Aviation Radio Conoi Electrics Bob Kopski 25 West End Dr Lansdale PA 19446 Author Kopski talks about Great Planes PT Electric month likes kits thorough instruction manual Note lightening holes structure Hint motor rattles running wrap turn two plastic tape around its rear fits tightly hole fuselage former Author notes PT usually lands nicelyif set up approach well recommends installing speed controller help hug ground no tendency nose-over other funny things course have approach earth reasonable attitudebut PT will rest nicely fairness must comment takeoffs grass strips stock power system best very mar ginal hand launches relatively easy other hand have no doubt would eas ily ROG smooth hard surface Ive also seen PTs 15-size cobalt systems completely changes grass takeoffability story Since just mentioned stock power sys tem Ill expand bit PT supplied economy Mabuchi motor Thrust master has flux ring photo shows motor mounted place plane sup ported rear former having round cutout front small plywood plate screwed both motor first fuselage former opening first former little oversize some adjustment range side thrust available look closely can see small amount right thrust installationa good trim have high-wing cabin-style models some others too Ive opportunity bench run two sam ples Thrustmaster motor functions comfortably recommended prop 8 x 4 nylon battery made up either six seven Ni-Cd cells six cells average rpm during rundown about 9300-9400 90 watts input seven cells jumps about 10400 rpm 125 watts PT flies nicely either way person ally recommend using seven 12 Ah cells speed control Thats what built Ewing What youll get return very nicely flying combination plenty peak power combined comfortably long flights throttle reduced friend Fred built model did power system installation opted some personal preferences wired way included speed control arm ing switch fuselage-surface-mounted charg ing jack Astro P/N 4030 planesand others locallyhave charge jack See photo July 1988 issue MA page 46 allows EASY charging connection out taking battery out plane out associated wear tear supplied Tamiya battery connector PT designed easy-open battery hatch fuselage bottom allow convenient battery removal/re placementBUT personally dont like exer cise economy connectors unnecessarily connectors matter Ito Ie remove batteries between flightsId imme diately change Sermos connectors bat tery harnessContinued page 160 battery needs call write B&P Associates PO Box 22054 Waco TX 76702-2054 817662-5587 new electric starter battery pack cuts cord has always tied starter power panel Discover freedom being able start plane wherever added safety less wire get caught prop charge hefty 4 Amp/hour pack will take through weekend flying power enough spare dont stop have Ni-Cads virtually size imaginable cut experimenter free design whatever takes make yours best setup field March 1989 55 Dr John Mountjoy Winston-Salem NC builds lots Electrics stock Ace RC 4-60 kit powered sport 60 co balt motor running 28 1200 mAh cells turning 135 x 8 prop direct drive Plane weighs 96 lb uses Coverite Micaflim wing Coverite Press-On fuse lage Doc claims plane does everything wants Motor held its mount Sulli van Gold-N-Rod yellow inner tubing B&P Associates Gives Total Flight Line FREEDOM AIR WOLF EPOXY FIBERGLASS FUSELAGES TAKES MOST 50-60 MECHANICS OTHER MODELS AVAILABLE LARRY JOLLY MODEL PRODUCTS $20000 5501 WCOMO SANTA ANA CALIFORNIA 92703 714 826-6861 NEW BY POPULAR REQUEST LARGE SCALE ENGINE CYLINDERS PRATT WHITNEY WASP 4 WRIGHT J-5 WHIRLWIND Molded high-impact styrene dummy cylinders feature deep cooling fins utmost realism Both Wasp Whirlwind types cylinders available two different large scales 1/5th 2 4th 3 ts include assembly instructions Smaller sizes also offered Note units may modified resemble other cylinder types Send $3 full-color catalog featuring aircraft paintings suitable framing WILLIAMS BROTHERS INC DEPT MA 181 PAWNEE STREET SAN MARCOS CALIFORNIA 92069 best joints made least glue clamping two pieces squeezing out ex cess glue made joints thicker glue glue pulled apart chunks rather shearing along whole surface strength very low no about one-fourth strength well-made joint good joint between CF balsa fails pulling slivers balsa off piece glue torn Bonds between two materials weakest Glue joints between CF spruce much stronger CF/balsa fail combination pulling some splinters out wood shearing some glue itself Joints between CF CF fail mostly separating gluelaminating interface well-sanded surfac es strength CF/CF joints close CF/spruce maybe bit Some joints taxed tension machine reengineered order break sam ples Aliphatic glue makes weakest bond tested Next 5-minute epoxy fast epoxy somewhat weaker slower epox les cyanoacrylate strongest quite bit being about twice strong slowest ep oxy four times strong fast epoxy average breaking shear stresses sam ples CF/CF CF/spruce given below Glue Average Strength psi Aliphatie 1220 Epoxyfast 5-mm 1530 Epoxymedium 30-mm 2190 Epoxyslow 3-hr 3410 Cyanoacrylate 6560 summary want good joint tween CF/epoxy laminate spruce other laminate sand until shiny spots disappear clean put Slow Zap squeeze extra glue out Thats best joint Well thats about month Coming near future will column dedicated purely flying wings canards have know exciting wings canards would like see included feel free send some information photos RC Electrics/Kopski Continued page 55 leads return past topic Economy Electric say past because back August 86 issue addressed great length topic get Electric economi cally really realizing have seriously revisited subject inany depth since So guess what Readers have both inquiring about reminding fact some have hinted Ive abandoned subject area least intentionally Ill now try make up lost time time referenced economical Astro motor can style worked very well used motor several years did local Electric-flyin friends writing column Astro dropping economy motors its line setting up concentrate much higher quality product ar ray now place So what recommended August 86 issue immediately obsoleted has brought letters over years still does specifically lots readers still have either burning interest pressing need thing ECONOMICALLY Putting straightforward fashion Some modelers have limited resources simply able go best merchandise kinds considerations reason wrote col umn first place Does mean should deprived Electric enjoyment DEFI NITELY NOT Having just offered some info Great Planes PT its Thrustmaster motor let fer motor excellent example eco nomical way power economy Etectric Thrustmaster available separately around $25 retail think motor can buy confidence use different 05-size planes No its cobalt No brushes replaceable Yes its relatively heavy its power handling capability BUT will fly fly fly heck out model finally wears out whatever should very much have gotten moneys worth Out effect motor throwawaybut what After potentially several hundred Yes really mean several hundred flights really cares Ive flown economy can motors hundreds flights experience did include Thrustmaster time feel Id expect about same results Used properly correct battery prop motor should give LOTS LOTS continuing funeconomically what plane Well obvious choice PT thats Put motor nose Two-Meter Glider 8 x 4 direct-drive prop youve got simple effec tive power systemand thats cheap may competitive higher performance cobalts want fly Electric fun budget way go course complete economy system in160 Model Aviation Advanced Transmitter Capabilities Low Cost TM ATRCS Stores Four Aircraft Setups Includes Seven Different Servo Configurations Individual Surface Travel Limits Centering Single Switch Presets Launch Speed Modes Full Trailing Edge Control Enhanced Mixing Functions Crow Landing Capability Fully installed kit Control Systems Laboratorie 238 5 Hillview Dr Milpitas CA 95035 408 946-4142 Airand Module 75PlM registered trademarks Airtronics Inc A-tracks Works with standard FM/PPM Receivers Airtronics PCM Receivers Convertsthe Module advanced computerized control system Advanced Technology Radio Control System volves just motor other neces sities discussed detail August 86 column Briefly six- seven-cell 12 Ah NiCd battery pack lots around model cars economy charger packs also lots around use RC cars basically need next step up fun department better motor rather speed control Thus can economically start out minimums described put speed control wish list future addi tion As example let refer once again December 1988 column picture Nytique Amptique derivative economy motor pod happens Kyosho 600E $1889 discount running six 12 Ah cells turning 7 x 6 Rev-Up very nicely performing combination adequate power slowly easily pull 44-oz night flier up low cost honest intended use 035 co balt finishing plane did have available used what did have 600E Because bought about year previously along several other low-cost mo tors search such economy candidates might recommend youand never got around covering topic Yes actually spent bunchabucks specifically purpose gathering passing along such info Frankly have good fortune having cobalt-equipped models actually no need additional alternative motors Anyway until now come together column Im happy Ive finally gotten around shar ing Another motor might consider Kyo sho 360 PT less economical choice point may want reconsider cobalt want show what can done few dollars less Ive run motor both direct-drive geared using six seven cells bench air its goodie motor used Persuader Wasplike aerobatic design direct six 1 2s 7 x 6 nylon prop cut 6 x 6 really hauls turns out quite few modelers using motor similar models same good re suits seen recent Electric Flys also used motor geared 251 seven cells Kyosho 9 x 8 Caliph sec February 1988 MA good success friend Fred Ewing has motor Astro 4046 reduction-gear drive unit running seven 1 2s 11 x 6 prop well-lightened Elec tric Pronto system peaks over 150 watts static thats 23 amps dont hold MOVES 54-oz plane great ease now aware rapidly growing number Electric kits market like PT come motors supplied least available option know ot economy pro ducts Most work VERY well However Ive seen heard some combi nations stand-alone products especially some ARFs real disappointmentsthe sort thing helps assure unlucky purchaser Electric really no gooda throwback ex perience Seventies So beware industry has yet caught to Elec tric right Read whats said Electric columns various hobby magazines regarding whats good check locals experien ces As column will never knowingly willfully mislead regarding some good product experience Ive have seen Frankly dont believe other columnist would either fact theres much good stuff coming scene weve plenty good things say Coming future columns Electric wormies truly ugly critters very useful field shop buddies serious Electric modelers Also Massachusetts teacher instructs model building flying summer classes Elec trics key part program tantalizing tidbits take leave months task invite send comments questions photos SASE pleaseContinued page 162 March 1989 161 PRICE REDUCTION SALE five models speed tontrols employ latest MOSFET/IIEXFET technology feature fail safe timer whith shufs down motor event transmitter receiver reteiver battery failure coAaseodded ModelParts Kitaid TestedcaMOSFETS tKt-24C$1550 $255t$ 350 $125t EKE-iS$25tt $31Ot$ 350 $1650 tKt4RM $2600 $3200 $ 35t $1505 EKE-24t g25tt $3ttt $ism stats tKtFR $4005 Situt gum $2400 EKE-Fe S35tt $45tt Situ SiSOt EKE-24U F5 Upgrade Kir order 5 500 Revs 11595 $1995 $ 500 Au non-warronty repairs normaily $1500 repair tee Piesse $200 postage handling per order Aloe 5A5E irtlormahon Au asoembied speed controis carry lou 60 day warranty tociessnes hear sinks aiso available Mail ELDENKEN ELECTRONICS INC PO Box 1853 Arvada Colorado 80001 call today 303 4311328 01 MasteiCard accepted plsa 4% THE MID-SOUTHS GREATEST s HOBBY SHOW April 29TH & 30TH 1989 NOW IN ITS 6TH BIG YEAR Sponsored by Mid South Radio Control Association Infonnation Call901 398-9791 800-500 daiLy CST PO Box 16900 his TN 38116 COMPETITION ACCESSORIES & CUSTOMIZED K&B ENGINES RACING WHEELS KLOTZ OIL CARBON FIBER SOLID LINES ALL KINDS OF FUEL TUBING FOUR BRANDS OFGLOWPLUGS HA RD-TO-FIND HARD WARE OLD TIMER SUPPLIES COILS CONDENSERS NGK & STIlT SPARK PLUGS SILK 12 COLORS QUALITY DOPE BRUSHES 5& 7LOOP 1/4 RUBBER BANDS TRANSISTOR IGNITION SYSTEMS RESISTOR HIGH TENSION LEADS 1/2A TEXACO PLA YBOYSR KIT 1/2A TEXACO ENGINES & PARTS KSB & IGNITION TIMERS RUBBER POWER KITS PROPS TISSUE AND OTHER SUPPLIES CYANOACRYLATES & EPOXIES dont forget CAN fly Electric dead cold winter See MA December 1985 February 1987 March 1988 RC Pylon Racing/Hager Continued page 56 RCR-90-21 restricts Q500 propellers diame ter nine inches Cant comment RCR-90-22 defines aircraft eligible competition Quarter Midget event Mod el aircraft must replica actual fullscale aircraft used closed-course racing rec ord attempts cross-country racing Comment Yes thought already try ing RCR-90-23 defines aircraft eligible competition Quarter Midget event Add wording require prototype Racing air craft model based must actually have built have competed full-scale racing Comment Yes RCR-90-24 helps define what aircraft designs eligible compete Quarter Midget class event prototype design has/had built must have published have been/are available sale drawings said prototype design No comment RCR-90-25 adds starting procedure Q500 Flier must facing No 1 pylon both hands RC transmitter order consid ered prepared takeoff Comment Yes RCR-90-26 clarifies engine availability rule Q500 language commercially avail able defined Once engine declared le gal competition shall always legal Comment Yes RCR-90-27 defines registration numbers affixed Q500 models being last two three digits entrants AMA number pre ceded letter N must least inch high shall placed both sides fuselage upper wing surface Comment This already requirement spelled out elsewhere rule book rule necessary RCR-90-28 changes chord/span dimensions required Q500 wings minimum wing thickness shall least P/16 least 47 span Cant comment RCR-90-29 clarifies scoring system used Pylon Racing winners three- two-plane matrixes receive appropriate scores Comment Yes RCR-90-30 clarifies meaning flier being prepared takeoff Quarter Midget flier must facing pylon No 1 both hands RC transmitter considered prepared takeoff Comment Yes RCR-90-31 changes language describing registra tion numbers Quarter Midget Comment Same -27 above RCR-90-32 clarifies fuselage cross sections Quarter Midget adding information end paragraph 8 QM rules paragraph will read oss-sectional contours cheek cowls canopy must have half-inch ra dius outermost surfaces one-inchdiameter ball should fit inside tangent outer surface Comment Yes RCR-90-33 requires muffler systems used Quarter Midget expansion chamber tuned pipe tuned-pipe muffler magic muffler types Flow-through types would allowed Comment No Tuned pipes tend make fast go faster thereby widening gap tween novice expert RCR-90-34 clarifies engine availability require ments Quarter Midget Once engine de clared legal competition shall always le gal Comment Yes Ive Racing about 20 years now Ive seen several types Racing come go Ive seen rule changes too make com ments based experience opin ions suggestions Please read proposed changes yourself make up own mind sure relay feelings RC Racing Contest Board member AMA dis trict Hey people Its over year since moved new address Some still sending stuff old address Please note new ad dress listed logo column monthright top See Races 162 Model Aviation PRACTICAL SIZED GIANT SCALE MODEL PLANS Fiberglass Cowlings Canopies Available F-i 5 Span 77 DC-311/2 1140Span$4200 F4U CORSAIR2 1/4 193Span$3000 ASMS ZERO2 1/2 191Spai$3000 sForRK-20 CURTIS P402 1/2 194Span$3000 40 DuctedFans AT-6 TEXAN24 1101Span$3000Phantom35Span$1000 F8F BEARCAT2 1/2 156Span$3000Viggen32Span$1000 FOKKER DR-i27 163Tripe$2700Catalog Plaas Accessories SuppliesF-is36Span$1000 Credited First Order $25 MorePlan Canopy$1500 Order Nick Ziroli29 Edgar Dr Smithtown NY 11787 USA516-234-5038 JUMSIIVI Id I. AVERAGES OVER 9000 PROPS Ii IMMEDIATE SHIPMENT ON VISA/MC SPECIALISTS IN CUSTOM COX TEE DEE & REED ENGINES 020S 049S 051S & 09S ALL CUSTOM & STOCK PARTS VAILABLEINDIVIDUALL Y ORDER BY MAIL OR PHONE 619 728-4355 SORRY NO COD VISA & MASTERCARD WELCOME MINIMUM MERCHANDISE ORDER $1000 SHIPPING & HANDLING FEE $150 FOR INSURANCE ADD $100 STOCK ORDERS SHIPPED WITHIN 24 HRS
Edition: Model Aviation - 1989/03
Page Numbers: 54, 55, 160, 161, 162
LETS OPEN follow-up last months column issue discussed Electric col umn November 88 Model Builder Mitch Poling reference charac terization motors readers technically inclined Now wish refer ence December 88 issue MB continu ing info same subject also aithored Mitch Im sure will find topi cal area much interest Readers interests vary great deal evi denced incoming mail fact very wide spread interest has always present range covers very simplest Electric mattersthings take granted stop others coldto advanced techni cal issues such just referenced try cover wide variety column over period time course readers would always like see attention dedicated partic ular interestssomething contradictory something everyone format general things dont eventually get cover certain specialized topics have no fa miliarity Thats just way its gotta folks respect latter statement occasion ally someone writes specialized interest perhaps Helicopter FAI Giant Scale Elec tric Whatever inquiry dont have famili arity matter Ill always try refer writer someone does So dont see something covered column want know about please write include SASE please Ill best provide direct swer least reference can neither Ill tell too PT Electric Great Planes proving very good performer locally Ive flown sev eral have seen dont fly well would hesitate recommend model kit instructions excellent months photos details PT struc ture happens same model raffled off September 1988 Electric Fly Lo cal expert Fred Ewing built kit did devi ate slightly written instructions Specifi cally preferred cover tail assembly separate item attach completed covered fuselage structure instructions de scribe covering horizontal vertical tail surfaces glued place fuselage Per sonally always cover separately leaving necessary wood exposed uncovered glue joint Fred tells otherwise did follow plans quite closely weighing components went along directed instructions Following weight guidelines having installed minisized RC flight system came out almost two ounces less recommended seven-cell tar get weight 50 oz all-up weight 48 Both us flight tested plane week before meet flew just great PT has interesting behavior characteris ticthe way lands model designed trike gear having nose gear fixed steerable Landings breeze begin ners plane just seems touch down Goldbergs Electric Power Pod kit detailed instructions structure cowling motor prop spinner has provision internal motor control servo Pods usable 2-Meter Gliders 6-cell 12 Ah Ni-Cd battery pack included mounts Gliders fuselage 54 Model Aviation Radio Conoi Electrics Bob Kopski 25 West End Dr Lansdale PA 19446 Author Kopski talks about Great Planes PT Electric month likes kits thorough instruction manual Note lightening holes structure Hint motor rattles running wrap turn two plastic tape around its rear fits tightly hole fuselage former Author notes PT usually lands nicelyif set up approach well recommends installing speed controller help hug ground no tendency nose-over other funny things course have approach earth reasonable attitudebut PT will rest nicely fairness must comment takeoffs grass strips stock power system best very mar ginal hand launches relatively easy other hand have no doubt would eas ily ROG smooth hard surface Ive also seen PTs 15-size cobalt systems completely changes grass takeoffability story Since just mentioned stock power sys tem Ill expand bit PT supplied economy Mabuchi motor Thrust master has flux ring photo shows motor mounted place plane sup ported rear former having round cutout front small plywood plate screwed both motor first fuselage former opening first former little oversize some adjustment range side thrust available look closely can see small amount right thrust installationa good trim have high-wing cabin-style models some others too Ive opportunity bench run two sam ples Thrustmaster motor functions comfortably recommended prop 8 x 4 nylon battery made up either six seven Ni-Cd cells six cells average rpm during rundown about 9300-9400 90 watts input seven cells jumps about 10400 rpm 125 watts PT flies nicely either way person ally recommend using seven 12 Ah cells speed control Thats what built Ewing What youll get return very nicely flying combination plenty peak power combined comfortably long flights throttle reduced friend Fred built model did power system installation opted some personal preferences wired way included speed control arm ing switch fuselage-surface-mounted charg ing jack Astro P/N 4030 planesand others locallyhave charge jack See photo July 1988 issue MA page 46 allows EASY charging connection out taking battery out plane out associated wear tear supplied Tamiya battery connector PT designed easy-open battery hatch fuselage bottom allow convenient battery removal/re placementBUT personally dont like exer cise economy connectors unnecessarily connectors matter Ito Ie remove batteries between flightsId imme diately change Sermos connectors bat tery harnessContinued page 160 battery needs call write B&P Associates PO Box 22054 Waco TX 76702-2054 817662-5587 new electric starter battery pack cuts cord has always tied starter power panel Discover freedom being able start plane wherever added safety less wire get caught prop charge hefty 4 Amp/hour pack will take through weekend flying power enough spare dont stop have Ni-Cads virtually size imaginable cut experimenter free design whatever takes make yours best setup field March 1989 55 Dr John Mountjoy Winston-Salem NC builds lots Electrics stock Ace RC 4-60 kit powered sport 60 co balt motor running 28 1200 mAh cells turning 135 x 8 prop direct drive Plane weighs 96 lb uses Coverite Micaflim wing Coverite Press-On fuse lage Doc claims plane does everything wants Motor held its mount Sulli van Gold-N-Rod yellow inner tubing B&P Associates Gives Total Flight Line FREEDOM AIR WOLF EPOXY FIBERGLASS FUSELAGES TAKES MOST 50-60 MECHANICS OTHER MODELS AVAILABLE LARRY JOLLY MODEL PRODUCTS $20000 5501 WCOMO SANTA ANA CALIFORNIA 92703 714 826-6861 NEW BY POPULAR REQUEST LARGE SCALE ENGINE CYLINDERS PRATT WHITNEY WASP 4 WRIGHT J-5 WHIRLWIND Molded high-impact styrene dummy cylinders feature deep cooling fins utmost realism Both Wasp Whirlwind types cylinders available two different large scales 1/5th 2 4th 3 ts include assembly instructions Smaller sizes also offered Note units may modified resemble other cylinder types Send $3 full-color catalog featuring aircraft paintings suitable framing WILLIAMS BROTHERS INC DEPT MA 181 PAWNEE STREET SAN MARCOS CALIFORNIA 92069 best joints made least glue clamping two pieces squeezing out ex cess glue made joints thicker glue glue pulled apart chunks rather shearing along whole surface strength very low no about one-fourth strength well-made joint good joint between CF balsa fails pulling slivers balsa off piece glue torn Bonds between two materials weakest Glue joints between CF spruce much stronger CF/balsa fail combination pulling some splinters out wood shearing some glue itself Joints between CF CF fail mostly separating gluelaminating interface well-sanded surfac es strength CF/CF joints close CF/spruce maybe bit Some joints taxed tension machine reengineered order break sam ples Aliphatic glue makes weakest bond tested Next 5-minute epoxy fast epoxy somewhat weaker slower epox les cyanoacrylate strongest quite bit being about twice strong slowest ep oxy four times strong fast epoxy average breaking shear stresses sam ples CF/CF CF/spruce given below Glue Average Strength psi Aliphatie 1220 Epoxyfast 5-mm 1530 Epoxymedium 30-mm 2190 Epoxyslow 3-hr 3410 Cyanoacrylate 6560 summary want good joint tween CF/epoxy laminate spruce other laminate sand until shiny spots disappear clean put Slow Zap squeeze extra glue out Thats best joint Well thats about month Coming near future will column dedicated purely flying wings canards have know exciting wings canards would like see included feel free send some information photos RC Electrics/Kopski Continued page 55 leads return past topic Economy Electric say past because back August 86 issue addressed great length topic get Electric economi cally really realizing have seriously revisited subject inany depth since So guess what Readers have both inquiring about reminding fact some have hinted Ive abandoned subject area least intentionally Ill now try make up lost time time referenced economical Astro motor can style worked very well used motor several years did local Electric-flyin friends writing column Astro dropping economy motors its line setting up concentrate much higher quality product ar ray now place So what recommended August 86 issue immediately obsoleted has brought letters over years still does specifically lots readers still have either burning interest pressing need thing ECONOMICALLY Putting straightforward fashion Some modelers have limited resources simply able go best merchandise kinds considerations reason wrote col umn first place Does mean should deprived Electric enjoyment DEFI NITELY NOT Having just offered some info Great Planes PT its Thrustmaster motor let fer motor excellent example eco nomical way power economy Etectric Thrustmaster available separately around $25 retail think motor can buy confidence use different 05-size planes No its cobalt No brushes replaceable Yes its relatively heavy its power handling capability BUT will fly fly fly heck out model finally wears out whatever should very much have gotten moneys worth Out effect motor throwawaybut what After potentially several hundred Yes really mean several hundred flights really cares Ive flown economy can motors hundreds flights experience did include Thrustmaster time feel Id expect about same results Used properly correct battery prop motor should give LOTS LOTS continuing funeconomically what plane Well obvious choice PT thats Put motor nose Two-Meter Glider 8 x 4 direct-drive prop youve got simple effec tive power systemand thats cheap may competitive higher performance cobalts want fly Electric fun budget way go course complete economy system in160 Model Aviation Advanced Transmitter Capabilities Low Cost TM ATRCS Stores Four Aircraft Setups Includes Seven Different Servo Configurations Individual Surface Travel Limits Centering Single Switch Presets Launch Speed Modes Full Trailing Edge Control Enhanced Mixing Functions Crow Landing Capability Fully installed kit Control Systems Laboratorie 238 5 Hillview Dr Milpitas CA 95035 408 946-4142 Airand Module 75PlM registered trademarks Airtronics Inc A-tracks Works with standard FM/PPM Receivers Airtronics PCM Receivers Convertsthe Module advanced computerized control system Advanced Technology Radio Control System volves just motor other neces sities discussed detail August 86 column Briefly six- seven-cell 12 Ah NiCd battery pack lots around model cars economy charger packs also lots around use RC cars basically need next step up fun department better motor rather speed control Thus can economically start out minimums described put speed control wish list future addi tion As example let refer once again December 1988 column picture Nytique Amptique derivative economy motor pod happens Kyosho 600E $1889 discount running six 12 Ah cells turning 7 x 6 Rev-Up very nicely performing combination adequate power slowly easily pull 44-oz night flier up low cost honest intended use 035 co balt finishing plane did have available used what did have 600E Because bought about year previously along several other low-cost mo tors search such economy candidates might recommend youand never got around covering topic Yes actually spent bunchabucks specifically purpose gathering passing along such info Frankly have good fortune having cobalt-equipped models actually no need additional alternative motors Anyway until now come together column Im happy Ive finally gotten around shar ing Another motor might consider Kyo sho 360 PT less economical choice point may want reconsider cobalt want show what can done few dollars less Ive run motor both direct-drive geared using six seven cells bench air its goodie motor used Persuader Wasplike aerobatic design direct six 1 2s 7 x 6 nylon prop cut 6 x 6 really hauls turns out quite few modelers using motor similar models same good re suits seen recent Electric Flys also used motor geared 251 seven cells Kyosho 9 x 8 Caliph sec February 1988 MA good success friend Fred Ewing has motor Astro 4046 reduction-gear drive unit running seven 1 2s 11 x 6 prop well-lightened Elec tric Pronto system peaks over 150 watts static thats 23 amps dont hold MOVES 54-oz plane great ease now aware rapidly growing number Electric kits market like PT come motors supplied least available option know ot economy pro ducts Most work VERY well However Ive seen heard some combi nations stand-alone products especially some ARFs real disappointmentsthe sort thing helps assure unlucky purchaser Electric really no gooda throwback ex perience Seventies So beware industry has yet caught to Elec tric right Read whats said Electric columns various hobby magazines regarding whats good check locals experien ces As column will never knowingly willfully mislead regarding some good product experience Ive have seen Frankly dont believe other columnist would either fact theres much good stuff coming scene weve plenty good things say Coming future columns Electric wormies truly ugly critters very useful field shop buddies serious Electric modelers Also Massachusetts teacher instructs model building flying summer classes Elec trics key part program tantalizing tidbits take leave months task invite send comments questions photos SASE pleaseContinued page 162 March 1989 161 PRICE REDUCTION SALE five models speed tontrols employ latest MOSFET/IIEXFET technology feature fail safe timer whith shufs down motor event transmitter receiver reteiver battery failure coAaseodded ModelParts Kitaid TestedcaMOSFETS tKt-24C$1550 $255t$ 350 $125t EKE-iS$25tt $31Ot$ 350 $1650 tKt4RM $2600 $3200 $ 35t $1505 EKE-24t g25tt $3ttt $ism stats tKtFR $4005 Situt gum $2400 EKE-Fe S35tt $45tt Situ SiSOt EKE-24U F5 Upgrade Kir order 5 500 Revs 11595 $1995 $ 500 Au non-warronty repairs normaily $1500 repair tee Piesse $200 postage handling per order Aloe 5A5E irtlormahon Au asoembied speed controis carry lou 60 day warranty tociessnes hear sinks aiso available Mail ELDENKEN ELECTRONICS INC PO Box 1853 Arvada Colorado 80001 call today 303 4311328 01 MasteiCard accepted plsa 4% THE MID-SOUTHS GREATEST s HOBBY SHOW April 29TH & 30TH 1989 NOW IN ITS 6TH BIG YEAR Sponsored by Mid South Radio Control Association Infonnation Call901 398-9791 800-500 daiLy CST PO Box 16900 his TN 38116 COMPETITION ACCESSORIES & CUSTOMIZED K&B ENGINES RACING WHEELS KLOTZ OIL CARBON FIBER SOLID LINES ALL KINDS OF FUEL TUBING FOUR BRANDS OFGLOWPLUGS HA RD-TO-FIND HARD WARE OLD TIMER SUPPLIES COILS CONDENSERS NGK & STIlT SPARK PLUGS SILK 12 COLORS QUALITY DOPE BRUSHES 5& 7LOOP 1/4 RUBBER BANDS TRANSISTOR IGNITION SYSTEMS RESISTOR HIGH TENSION LEADS 1/2A TEXACO PLA YBOYSR KIT 1/2A TEXACO ENGINES & PARTS KSB & IGNITION TIMERS RUBBER POWER KITS PROPS TISSUE AND OTHER SUPPLIES CYANOACRYLATES & EPOXIES dont forget CAN fly Electric dead cold winter See MA December 1985 February 1987 March 1988 RC Pylon Racing/Hager Continued page 56 RCR-90-21 restricts Q500 propellers diame ter nine inches Cant comment RCR-90-22 defines aircraft eligible competition Quarter Midget event Mod el aircraft must replica actual fullscale aircraft used closed-course racing rec ord attempts cross-country racing Comment Yes thought already try ing RCR-90-23 defines aircraft eligible competition Quarter Midget event Add wording require prototype Racing air craft model based must actually have built have competed full-scale racing Comment Yes RCR-90-24 helps define what aircraft designs eligible compete Quarter Midget class event prototype design has/had built must have published have been/are available sale drawings said prototype design No comment RCR-90-25 adds starting procedure Q500 Flier must facing No 1 pylon both hands RC transmitter order consid ered prepared takeoff Comment Yes RCR-90-26 clarifies engine availability rule Q500 language commercially avail able defined Once engine declared le gal competition shall always legal Comment Yes RCR-90-27 defines registration numbers affixed Q500 models being last two three digits entrants AMA number pre ceded letter N must least inch high shall placed both sides fuselage upper wing surface Comment This already requirement spelled out elsewhere rule book rule necessary RCR-90-28 changes chord/span dimensions required Q500 wings minimum wing thickness shall least P/16 least 47 span Cant comment RCR-90-29 clarifies scoring system used Pylon Racing winners three- two-plane matrixes receive appropriate scores Comment Yes RCR-90-30 clarifies meaning flier being prepared takeoff Quarter Midget flier must facing pylon No 1 both hands RC transmitter considered prepared takeoff Comment Yes RCR-90-31 changes language describing registra tion numbers Quarter Midget Comment Same -27 above RCR-90-32 clarifies fuselage cross sections Quarter Midget adding information end paragraph 8 QM rules paragraph will read oss-sectional contours cheek cowls canopy must have half-inch ra dius outermost surfaces one-inchdiameter ball should fit inside tangent outer surface Comment Yes RCR-90-33 requires muffler systems used Quarter Midget expansion chamber tuned pipe tuned-pipe muffler magic muffler types Flow-through types would allowed Comment No Tuned pipes tend make fast go faster thereby widening gap tween novice expert RCR-90-34 clarifies engine availability require ments Quarter Midget Once engine de clared legal competition shall always le gal Comment Yes Ive Racing about 20 years now Ive seen several types Racing come go Ive seen rule changes too make com ments based experience opin ions suggestions Please read proposed changes yourself make up own mind sure relay feelings RC Racing Contest Board member AMA dis trict Hey people Its over year since moved new address Some still sending stuff old address Please note new ad dress listed logo column monthright top See Races 162 Model Aviation PRACTICAL SIZED GIANT SCALE MODEL PLANS Fiberglass Cowlings Canopies Available F-i 5 Span 77 DC-311/2 1140Span$4200 F4U CORSAIR2 1/4 193Span$3000 ASMS ZERO2 1/2 191Spai$3000 sForRK-20 CURTIS P402 1/2 194Span$3000 40 DuctedFans AT-6 TEXAN24 1101Span$3000Phantom35Span$1000 F8F BEARCAT2 1/2 156Span$3000Viggen32Span$1000 FOKKER DR-i27 163Tripe$2700Catalog Plaas Accessories SuppliesF-is36Span$1000 Credited First Order $25 MorePlan Canopy$1500 Order Nick Ziroli29 Edgar Dr Smithtown NY 11787 USA516-234-5038 JUMSIIVI Id I. AVERAGES OVER 9000 PROPS Ii IMMEDIATE SHIPMENT ON VISA/MC SPECIALISTS IN CUSTOM COX TEE DEE & REED ENGINES 020S 049S 051S & 09S ALL CUSTOM & STOCK PARTS VAILABLEINDIVIDUALL Y ORDER BY MAIL OR PHONE 619 728-4355 SORRY NO COD VISA & MASTERCARD WELCOME MINIMUM MERCHANDISE ORDER $1000 SHIPPING & HANDLING FEE $150 FOR INSURANCE ADD $100 STOCK ORDERS SHIPPED WITHIN 24 HRS
Edition: Model Aviation - 1989/03
Page Numbers: 54, 55, 160, 161, 162
LETS OPEN follow-up last months column issue discussed Electric col umn November 88 Model Builder Mitch Poling reference charac terization motors readers technically inclined Now wish refer ence December 88 issue MB continu ing info same subject also aithored Mitch Im sure will find topi cal area much interest Readers interests vary great deal evi denced incoming mail fact very wide spread interest has always present range covers very simplest Electric mattersthings take granted stop others coldto advanced techni cal issues such just referenced try cover wide variety column over period time course readers would always like see attention dedicated partic ular interestssomething contradictory something everyone format general things dont eventually get cover certain specialized topics have no fa miliarity Thats just way its gotta folks respect latter statement occasion ally someone writes specialized interest perhaps Helicopter FAI Giant Scale Elec tric Whatever inquiry dont have famili arity matter Ill always try refer writer someone does So dont see something covered column want know about please write include SASE please Ill best provide direct swer least reference can neither Ill tell too PT Electric Great Planes proving very good performer locally Ive flown sev eral have seen dont fly well would hesitate recommend model kit instructions excellent months photos details PT struc ture happens same model raffled off September 1988 Electric Fly Lo cal expert Fred Ewing built kit did devi ate slightly written instructions Specifi cally preferred cover tail assembly separate item attach completed covered fuselage structure instructions de scribe covering horizontal vertical tail surfaces glued place fuselage Per sonally always cover separately leaving necessary wood exposed uncovered glue joint Fred tells otherwise did follow plans quite closely weighing components went along directed instructions Following weight guidelines having installed minisized RC flight system came out almost two ounces less recommended seven-cell tar get weight 50 oz all-up weight 48 Both us flight tested plane week before meet flew just great PT has interesting behavior characteris ticthe way lands model designed trike gear having nose gear fixed steerable Landings breeze begin ners plane just seems touch down Goldbergs Electric Power Pod kit detailed instructions structure cowling motor prop spinner has provision internal motor control servo Pods usable 2-Meter Gliders 6-cell 12 Ah Ni-Cd battery pack included mounts Gliders fuselage 54 Model Aviation Radio Conoi Electrics Bob Kopski 25 West End Dr Lansdale PA 19446 Author Kopski talks about Great Planes PT Electric month likes kits thorough instruction manual Note lightening holes structure Hint motor rattles running wrap turn two plastic tape around its rear fits tightly hole fuselage former Author notes PT usually lands nicelyif set up approach well recommends installing speed controller help hug ground no tendency nose-over other funny things course have approach earth reasonable attitudebut PT will rest nicely fairness must comment takeoffs grass strips stock power system best very mar ginal hand launches relatively easy other hand have no doubt would eas ily ROG smooth hard surface Ive also seen PTs 15-size cobalt systems completely changes grass takeoffability story Since just mentioned stock power sys tem Ill expand bit PT supplied economy Mabuchi motor Thrust master has flux ring photo shows motor mounted place plane sup ported rear former having round cutout front small plywood plate screwed both motor first fuselage former opening first former little oversize some adjustment range side thrust available look closely can see small amount right thrust installationa good trim have high-wing cabin-style models some others too Ive opportunity bench run two sam ples Thrustmaster motor functions comfortably recommended prop 8 x 4 nylon battery made up either six seven Ni-Cd cells six cells average rpm during rundown about 9300-9400 90 watts input seven cells jumps about 10400 rpm 125 watts PT flies nicely either way person ally recommend using seven 12 Ah cells speed control Thats what built Ewing What youll get return very nicely flying combination plenty peak power combined comfortably long flights throttle reduced friend Fred built model did power system installation opted some personal preferences wired way included speed control arm ing switch fuselage-surface-mounted charg ing jack Astro P/N 4030 planesand others locallyhave charge jack See photo July 1988 issue MA page 46 allows EASY charging connection out taking battery out plane out associated wear tear supplied Tamiya battery connector PT designed easy-open battery hatch fuselage bottom allow convenient battery removal/re placementBUT personally dont like exer cise economy connectors unnecessarily connectors matter Ito Ie remove batteries between flightsId imme diately change Sermos connectors bat tery harnessContinued page 160 battery needs call write B&P Associates PO Box 22054 Waco TX 76702-2054 817662-5587 new electric starter battery pack cuts cord has always tied starter power panel Discover freedom being able start plane wherever added safety less wire get caught prop charge hefty 4 Amp/hour pack will take through weekend flying power enough spare dont stop have Ni-Cads virtually size imaginable cut experimenter free design whatever takes make yours best setup field March 1989 55 Dr John Mountjoy Winston-Salem NC builds lots Electrics stock Ace RC 4-60 kit powered sport 60 co balt motor running 28 1200 mAh cells turning 135 x 8 prop direct drive Plane weighs 96 lb uses Coverite Micaflim wing Coverite Press-On fuse lage Doc claims plane does everything wants Motor held its mount Sulli van Gold-N-Rod yellow inner tubing B&P Associates Gives Total Flight Line FREEDOM AIR WOLF EPOXY FIBERGLASS FUSELAGES TAKES MOST 50-60 MECHANICS OTHER MODELS AVAILABLE LARRY JOLLY MODEL PRODUCTS $20000 5501 WCOMO SANTA ANA CALIFORNIA 92703 714 826-6861 NEW BY POPULAR REQUEST LARGE SCALE ENGINE CYLINDERS PRATT WHITNEY WASP 4 WRIGHT J-5 WHIRLWIND Molded high-impact styrene dummy cylinders feature deep cooling fins utmost realism Both Wasp Whirlwind types cylinders available two different large scales 1/5th 2 4th 3 ts include assembly instructions Smaller sizes also offered Note units may modified resemble other cylinder types Send $3 full-color catalog featuring aircraft paintings suitable framing WILLIAMS BROTHERS INC DEPT MA 181 PAWNEE STREET SAN MARCOS CALIFORNIA 92069 best joints made least glue clamping two pieces squeezing out ex cess glue made joints thicker glue glue pulled apart chunks rather shearing along whole surface strength very low no about one-fourth strength well-made joint good joint between CF balsa fails pulling slivers balsa off piece glue torn Bonds between two materials weakest Glue joints between CF spruce much stronger CF/balsa fail combination pulling some splinters out wood shearing some glue itself Joints between CF CF fail mostly separating gluelaminating interface well-sanded surfac es strength CF/CF joints close CF/spruce maybe bit Some joints taxed tension machine reengineered order break sam ples Aliphatic glue makes weakest bond tested Next 5-minute epoxy fast epoxy somewhat weaker slower epox les cyanoacrylate strongest quite bit being about twice strong slowest ep oxy four times strong fast epoxy average breaking shear stresses sam ples CF/CF CF/spruce given below Glue Average Strength psi Aliphatie 1220 Epoxyfast 5-mm 1530 Epoxymedium 30-mm 2190 Epoxyslow 3-hr 3410 Cyanoacrylate 6560 summary want good joint tween CF/epoxy laminate spruce other laminate sand until shiny spots disappear clean put Slow Zap squeeze extra glue out Thats best joint Well thats about month Coming near future will column dedicated purely flying wings canards have know exciting wings canards would like see included feel free send some information photos RC Electrics/Kopski Continued page 55 leads return past topic Economy Electric say past because back August 86 issue addressed great length topic get Electric economi cally really realizing have seriously revisited subject inany depth since So guess what Readers have both inquiring about reminding fact some have hinted Ive abandoned subject area least intentionally Ill now try make up lost time time referenced economical Astro motor can style worked very well used motor several years did local Electric-flyin friends writing column Astro dropping economy motors its line setting up concentrate much higher quality product ar ray now place So what recommended August 86 issue immediately obsoleted has brought letters over years still does specifically lots readers still have either burning interest pressing need thing ECONOMICALLY Putting straightforward fashion Some modelers have limited resources simply able go best merchandise kinds considerations reason wrote col umn first place Does mean should deprived Electric enjoyment DEFI NITELY NOT Having just offered some info Great Planes PT its Thrustmaster motor let fer motor excellent example eco nomical way power economy Etectric Thrustmaster available separately around $25 retail think motor can buy confidence use different 05-size planes No its cobalt No brushes replaceable Yes its relatively heavy its power handling capability BUT will fly fly fly heck out model finally wears out whatever should very much have gotten moneys worth Out effect motor throwawaybut what After potentially several hundred Yes really mean several hundred flights really cares Ive flown economy can motors hundreds flights experience did include Thrustmaster time feel Id expect about same results Used properly correct battery prop motor should give LOTS LOTS continuing funeconomically what plane Well obvious choice PT thats Put motor nose Two-Meter Glider 8 x 4 direct-drive prop youve got simple effec tive power systemand thats cheap may competitive higher performance cobalts want fly Electric fun budget way go course complete economy system in160 Model Aviation Advanced Transmitter Capabilities Low Cost TM ATRCS Stores Four Aircraft Setups Includes Seven Different Servo Configurations Individual Surface Travel Limits Centering Single Switch Presets Launch Speed Modes Full Trailing Edge Control Enhanced Mixing Functions Crow Landing Capability Fully installed kit Control Systems Laboratorie 238 5 Hillview Dr Milpitas CA 95035 408 946-4142 Airand Module 75PlM registered trademarks Airtronics Inc A-tracks Works with standard FM/PPM Receivers Airtronics PCM Receivers Convertsthe Module advanced computerized control system Advanced Technology Radio Control System volves just motor other neces sities discussed detail August 86 column Briefly six- seven-cell 12 Ah NiCd battery pack lots around model cars economy charger packs also lots around use RC cars basically need next step up fun department better motor rather speed control Thus can economically start out minimums described put speed control wish list future addi tion As example let refer once again December 1988 column picture Nytique Amptique derivative economy motor pod happens Kyosho 600E $1889 discount running six 12 Ah cells turning 7 x 6 Rev-Up very nicely performing combination adequate power slowly easily pull 44-oz night flier up low cost honest intended use 035 co balt finishing plane did have available used what did have 600E Because bought about year previously along several other low-cost mo tors search such economy candidates might recommend youand never got around covering topic Yes actually spent bunchabucks specifically purpose gathering passing along such info Frankly have good fortune having cobalt-equipped models actually no need additional alternative motors Anyway until now come together column Im happy Ive finally gotten around shar ing Another motor might consider Kyo sho 360 PT less economical choice point may want reconsider cobalt want show what can done few dollars less Ive run motor both direct-drive geared using six seven cells bench air its goodie motor used Persuader Wasplike aerobatic design direct six 1 2s 7 x 6 nylon prop cut 6 x 6 really hauls turns out quite few modelers using motor similar models same good re suits seen recent Electric Flys also used motor geared 251 seven cells Kyosho 9 x 8 Caliph sec February 1988 MA good success friend Fred Ewing has motor Astro 4046 reduction-gear drive unit running seven 1 2s 11 x 6 prop well-lightened Elec tric Pronto system peaks over 150 watts static thats 23 amps dont hold MOVES 54-oz plane great ease now aware rapidly growing number Electric kits market like PT come motors supplied least available option know ot economy pro ducts Most work VERY well However Ive seen heard some combi nations stand-alone products especially some ARFs real disappointmentsthe sort thing helps assure unlucky purchaser Electric really no gooda throwback ex perience Seventies So beware industry has yet caught to Elec tric right Read whats said Electric columns various hobby magazines regarding whats good check locals experien ces As column will never knowingly willfully mislead regarding some good product experience Ive have seen Frankly dont believe other columnist would either fact theres much good stuff coming scene weve plenty good things say Coming future columns Electric wormies truly ugly critters very useful field shop buddies serious Electric modelers Also Massachusetts teacher instructs model building flying summer classes Elec trics key part program tantalizing tidbits take leave months task invite send comments questions photos SASE pleaseContinued page 162 March 1989 161 PRICE REDUCTION SALE five models speed tontrols employ latest MOSFET/IIEXFET technology feature fail safe timer whith shufs down motor event transmitter receiver reteiver battery failure coAaseodded ModelParts Kitaid TestedcaMOSFETS tKt-24C$1550 $255t$ 350 $125t EKE-iS$25tt $31Ot$ 350 $1650 tKt4RM $2600 $3200 $ 35t $1505 EKE-24t g25tt $3ttt $ism stats tKtFR $4005 Situt gum $2400 EKE-Fe S35tt $45tt Situ SiSOt EKE-24U F5 Upgrade Kir order 5 500 Revs 11595 $1995 $ 500 Au non-warronty repairs normaily $1500 repair tee Piesse $200 postage handling per order Aloe 5A5E irtlormahon Au asoembied speed controis carry lou 60 day warranty tociessnes hear sinks aiso available Mail ELDENKEN ELECTRONICS INC PO Box 1853 Arvada Colorado 80001 call today 303 4311328 01 MasteiCard accepted plsa 4% THE MID-SOUTHS GREATEST s HOBBY SHOW April 29TH & 30TH 1989 NOW IN ITS 6TH BIG YEAR Sponsored by Mid South Radio Control Association Infonnation Call901 398-9791 800-500 daiLy CST PO Box 16900 his TN 38116 COMPETITION ACCESSORIES & CUSTOMIZED K&B ENGINES RACING WHEELS KLOTZ OIL CARBON FIBER SOLID LINES ALL KINDS OF FUEL TUBING FOUR BRANDS OFGLOWPLUGS HA RD-TO-FIND HARD WARE OLD TIMER SUPPLIES COILS CONDENSERS NGK & STIlT SPARK PLUGS SILK 12 COLORS QUALITY DOPE BRUSHES 5& 7LOOP 1/4 RUBBER BANDS TRANSISTOR IGNITION SYSTEMS RESISTOR HIGH TENSION LEADS 1/2A TEXACO PLA YBOYSR KIT 1/2A TEXACO ENGINES & PARTS KSB & IGNITION TIMERS RUBBER POWER KITS PROPS TISSUE AND OTHER SUPPLIES CYANOACRYLATES & EPOXIES dont forget CAN fly Electric dead cold winter See MA December 1985 February 1987 March 1988 RC Pylon Racing/Hager Continued page 56 RCR-90-21 restricts Q500 propellers diame ter nine inches Cant comment RCR-90-22 defines aircraft eligible competition Quarter Midget event Mod el aircraft must replica actual fullscale aircraft used closed-course racing rec ord attempts cross-country racing Comment Yes thought already try ing RCR-90-23 defines aircraft eligible competition Quarter Midget event Add wording require prototype Racing air craft model based must actually have built have competed full-scale racing Comment Yes RCR-90-24 helps define what aircraft designs eligible compete Quarter Midget class event prototype design has/had built must have published have been/are available sale drawings said prototype design No comment RCR-90-25 adds starting procedure Q500 Flier must facing No 1 pylon both hands RC transmitter order consid ered prepared takeoff Comment Yes RCR-90-26 clarifies engine availability rule Q500 language commercially avail able defined Once engine declared le gal competition shall always legal Comment Yes RCR-90-27 defines registration numbers affixed Q500 models being last two three digits entrants AMA number pre ceded letter N must least inch high shall placed both sides fuselage upper wing surface Comment This already requirement spelled out elsewhere rule book rule necessary RCR-90-28 changes chord/span dimensions required Q500 wings minimum wing thickness shall least P/16 least 47 span Cant comment RCR-90-29 clarifies scoring system used Pylon Racing winners three- two-plane matrixes receive appropriate scores Comment Yes RCR-90-30 clarifies meaning flier being prepared takeoff Quarter Midget flier must facing pylon No 1 both hands RC transmitter considered prepared takeoff Comment Yes RCR-90-31 changes language describing registra tion numbers Quarter Midget Comment Same -27 above RCR-90-32 clarifies fuselage cross sections Quarter Midget adding information end paragraph 8 QM rules paragraph will read oss-sectional contours cheek cowls canopy must have half-inch ra dius outermost surfaces one-inchdiameter ball should fit inside tangent outer surface Comment Yes RCR-90-33 requires muffler systems used Quarter Midget expansion chamber tuned pipe tuned-pipe muffler magic muffler types Flow-through types would allowed Comment No Tuned pipes tend make fast go faster thereby widening gap tween novice expert RCR-90-34 clarifies engine availability require ments Quarter Midget Once engine de clared legal competition shall always le gal Comment Yes Ive Racing about 20 years now Ive seen several types Racing come go Ive seen rule changes too make com ments based experience opin ions suggestions Please read proposed changes yourself make up own mind sure relay feelings RC Racing Contest Board member AMA dis trict Hey people Its over year since moved new address Some still sending stuff old address Please note new ad dress listed logo column monthright top See Races 162 Model Aviation PRACTICAL SIZED GIANT SCALE MODEL PLANS Fiberglass Cowlings Canopies Available F-i 5 Span 77 DC-311/2 1140Span$4200 F4U CORSAIR2 1/4 193Span$3000 ASMS ZERO2 1/2 191Spai$3000 sForRK-20 CURTIS P402 1/2 194Span$3000 40 DuctedFans AT-6 TEXAN24 1101Span$3000Phantom35Span$1000 F8F BEARCAT2 1/2 156Span$3000Viggen32Span$1000 FOKKER DR-i27 163Tripe$2700Catalog Plaas Accessories SuppliesF-is36Span$1000 Credited First Order $25 MorePlan Canopy$1500 Order Nick Ziroli29 Edgar Dr Smithtown NY 11787 USA516-234-5038 JUMSIIVI Id I. AVERAGES OVER 9000 PROPS Ii IMMEDIATE SHIPMENT ON VISA/MC SPECIALISTS IN CUSTOM COX TEE DEE & REED ENGINES 020S 049S 051S & 09S ALL CUSTOM & STOCK PARTS VAILABLEINDIVIDUALL Y ORDER BY MAIL OR PHONE 619 728-4355 SORRY NO COD VISA & MASTERCARD WELCOME MINIMUM MERCHANDISE ORDER $1000 SHIPPING & HANDLING FEE $150 FOR INSURANCE ADD $100 STOCK ORDERS SHIPPED WITHIN 24 HRS
Edition: Model Aviation - 1989/03
Page Numbers: 54, 55, 160, 161, 162
LETS OPEN follow-up last months column issue discussed Electric col umn November 88 Model Builder Mitch Poling reference charac terization motors readers technically inclined Now wish refer ence December 88 issue MB continu ing info same subject also aithored Mitch Im sure will find topi cal area much interest Readers interests vary great deal evi denced incoming mail fact very wide spread interest has always present range covers very simplest Electric mattersthings take granted stop others coldto advanced techni cal issues such just referenced try cover wide variety column over period time course readers would always like see attention dedicated partic ular interestssomething contradictory something everyone format general things dont eventually get cover certain specialized topics have no fa miliarity Thats just way its gotta folks respect latter statement occasion ally someone writes specialized interest perhaps Helicopter FAI Giant Scale Elec tric Whatever inquiry dont have famili arity matter Ill always try refer writer someone does So dont see something covered column want know about please write include SASE please Ill best provide direct swer least reference can neither Ill tell too PT Electric Great Planes proving very good performer locally Ive flown sev eral have seen dont fly well would hesitate recommend model kit instructions excellent months photos details PT struc ture happens same model raffled off September 1988 Electric Fly Lo cal expert Fred Ewing built kit did devi ate slightly written instructions Specifi cally preferred cover tail assembly separate item attach completed covered fuselage structure instructions de scribe covering horizontal vertical tail surfaces glued place fuselage Per sonally always cover separately leaving necessary wood exposed uncovered glue joint Fred tells otherwise did follow plans quite closely weighing components went along directed instructions Following weight guidelines having installed minisized RC flight system came out almost two ounces less recommended seven-cell tar get weight 50 oz all-up weight 48 Both us flight tested plane week before meet flew just great PT has interesting behavior characteris ticthe way lands model designed trike gear having nose gear fixed steerable Landings breeze begin ners plane just seems touch down Goldbergs Electric Power Pod kit detailed instructions structure cowling motor prop spinner has provision internal motor control servo Pods usable 2-Meter Gliders 6-cell 12 Ah Ni-Cd battery pack included mounts Gliders fuselage 54 Model Aviation Radio Conoi Electrics Bob Kopski 25 West End Dr Lansdale PA 19446 Author Kopski talks about Great Planes PT Electric month likes kits thorough instruction manual Note lightening holes structure Hint motor rattles running wrap turn two plastic tape around its rear fits tightly hole fuselage former Author notes PT usually lands nicelyif set up approach well recommends installing speed controller help hug ground no tendency nose-over other funny things course have approach earth reasonable attitudebut PT will rest nicely fairness must comment takeoffs grass strips stock power system best very mar ginal hand launches relatively easy other hand have no doubt would eas ily ROG smooth hard surface Ive also seen PTs 15-size cobalt systems completely changes grass takeoffability story Since just mentioned stock power sys tem Ill expand bit PT supplied economy Mabuchi motor Thrust master has flux ring photo shows motor mounted place plane sup ported rear former having round cutout front small plywood plate screwed both motor first fuselage former opening first former little oversize some adjustment range side thrust available look closely can see small amount right thrust installationa good trim have high-wing cabin-style models some others too Ive opportunity bench run two sam ples Thrustmaster motor functions comfortably recommended prop 8 x 4 nylon battery made up either six seven Ni-Cd cells six cells average rpm during rundown about 9300-9400 90 watts input seven cells jumps about 10400 rpm 125 watts PT flies nicely either way person ally recommend using seven 12 Ah cells speed control Thats what built Ewing What youll get return very nicely flying combination plenty peak power combined comfortably long flights throttle reduced friend Fred built model did power system installation opted some personal preferences wired way included speed control arm ing switch fuselage-surface-mounted charg ing jack Astro P/N 4030 planesand others locallyhave charge jack See photo July 1988 issue MA page 46 allows EASY charging connection out taking battery out plane out associated wear tear supplied Tamiya battery connector PT designed easy-open battery hatch fuselage bottom allow convenient battery removal/re placementBUT personally dont like exer cise economy connectors unnecessarily connectors matter Ito Ie remove batteries between flightsId imme diately change Sermos connectors bat tery harnessContinued page 160 battery needs call write B&P Associates PO Box 22054 Waco TX 76702-2054 817662-5587 new electric starter battery pack cuts cord has always tied starter power panel Discover freedom being able start plane wherever added safety less wire get caught prop charge hefty 4 Amp/hour pack will take through weekend flying power enough spare dont stop have Ni-Cads virtually size imaginable cut experimenter free design whatever takes make yours best setup field March 1989 55 Dr John Mountjoy Winston-Salem NC builds lots Electrics stock Ace RC 4-60 kit powered sport 60 co balt motor running 28 1200 mAh cells turning 135 x 8 prop direct drive Plane weighs 96 lb uses Coverite Micaflim wing Coverite Press-On fuse lage Doc claims plane does everything wants Motor held its mount Sulli van Gold-N-Rod yellow inner tubing B&P Associates Gives Total Flight Line FREEDOM AIR WOLF EPOXY FIBERGLASS FUSELAGES TAKES MOST 50-60 MECHANICS OTHER MODELS AVAILABLE LARRY JOLLY MODEL PRODUCTS $20000 5501 WCOMO SANTA ANA CALIFORNIA 92703 714 826-6861 NEW BY POPULAR REQUEST LARGE SCALE ENGINE CYLINDERS PRATT WHITNEY WASP 4 WRIGHT J-5 WHIRLWIND Molded high-impact styrene dummy cylinders feature deep cooling fins utmost realism Both Wasp Whirlwind types cylinders available two different large scales 1/5th 2 4th 3 ts include assembly instructions Smaller sizes also offered Note units may modified resemble other cylinder types Send $3 full-color catalog featuring aircraft paintings suitable framing WILLIAMS BROTHERS INC DEPT MA 181 PAWNEE STREET SAN MARCOS CALIFORNIA 92069 best joints made least glue clamping two pieces squeezing out ex cess glue made joints thicker glue glue pulled apart chunks rather shearing along whole surface strength very low no about one-fourth strength well-made joint good joint between CF balsa fails pulling slivers balsa off piece glue torn Bonds between two materials weakest Glue joints between CF spruce much stronger CF/balsa fail combination pulling some splinters out wood shearing some glue itself Joints between CF CF fail mostly separating gluelaminating interface well-sanded surfac es strength CF/CF joints close CF/spruce maybe bit Some joints taxed tension machine reengineered order break sam ples Aliphatic glue makes weakest bond tested Next 5-minute epoxy fast epoxy somewhat weaker slower epox les cyanoacrylate strongest quite bit being about twice strong slowest ep oxy four times strong fast epoxy average breaking shear stresses sam ples CF/CF CF/spruce given below Glue Average Strength psi Aliphatie 1220 Epoxyfast 5-mm 1530 Epoxymedium 30-mm 2190 Epoxyslow 3-hr 3410 Cyanoacrylate 6560 summary want good joint tween CF/epoxy laminate spruce other laminate sand until shiny spots disappear clean put Slow Zap squeeze extra glue out Thats best joint Well thats about month Coming near future will column dedicated purely flying wings canards have know exciting wings canards would like see included feel free send some information photos RC Electrics/Kopski Continued page 55 leads return past topic Economy Electric say past because back August 86 issue addressed great length topic get Electric economi cally really realizing have seriously revisited subject inany depth since So guess what Readers have both inquiring about reminding fact some have hinted Ive abandoned subject area least intentionally Ill now try make up lost time time referenced economical Astro motor can style worked very well used motor several years did local Electric-flyin friends writing column Astro dropping economy motors its line setting up concentrate much higher quality product ar ray now place So what recommended August 86 issue immediately obsoleted has brought letters over years still does specifically lots readers still have either burning interest pressing need thing ECONOMICALLY Putting straightforward fashion Some modelers have limited resources simply able go best merchandise kinds considerations reason wrote col umn first place Does mean should deprived Electric enjoyment DEFI NITELY NOT Having just offered some info Great Planes PT its Thrustmaster motor let fer motor excellent example eco nomical way power economy Etectric Thrustmaster available separately around $25 retail think motor can buy confidence use different 05-size planes No its cobalt No brushes replaceable Yes its relatively heavy its power handling capability BUT will fly fly fly heck out model finally wears out whatever should very much have gotten moneys worth Out effect motor throwawaybut what After potentially several hundred Yes really mean several hundred flights really cares Ive flown economy can motors hundreds flights experience did include Thrustmaster time feel Id expect about same results Used properly correct battery prop motor should give LOTS LOTS continuing funeconomically what plane Well obvious choice PT thats Put motor nose Two-Meter Glider 8 x 4 direct-drive prop youve got simple effec tive power systemand thats cheap may competitive higher performance cobalts want fly Electric fun budget way go course complete economy system in160 Model Aviation Advanced Transmitter Capabilities Low Cost TM ATRCS Stores Four Aircraft Setups Includes Seven Different Servo Configurations Individual Surface Travel Limits Centering Single Switch Presets Launch Speed Modes Full Trailing Edge Control Enhanced Mixing Functions Crow Landing Capability Fully installed kit Control Systems Laboratorie 238 5 Hillview Dr Milpitas CA 95035 408 946-4142 Airand Module 75PlM registered trademarks Airtronics Inc A-tracks Works with standard FM/PPM Receivers Airtronics PCM Receivers Convertsthe Module advanced computerized control system Advanced Technology Radio Control System volves just motor other neces sities discussed detail August 86 column Briefly six- seven-cell 12 Ah NiCd battery pack lots around model cars economy charger packs also lots around use RC cars basically need next step up fun department better motor rather speed control Thus can economically start out minimums described put speed control wish list future addi tion As example let refer once again December 1988 column picture Nytique Amptique derivative economy motor pod happens Kyosho 600E $1889 discount running six 12 Ah cells turning 7 x 6 Rev-Up very nicely performing combination adequate power slowly easily pull 44-oz night flier up low cost honest intended use 035 co balt finishing plane did have available used what did have 600E Because bought about year previously along several other low-cost mo tors search such economy candidates might recommend youand never got around covering topic Yes actually spent bunchabucks specifically purpose gathering passing along such info Frankly have good fortune having cobalt-equipped models actually no need additional alternative motors Anyway until now come together column Im happy Ive finally gotten around shar ing Another motor might consider Kyo sho 360 PT less economical choice point may want reconsider cobalt want show what can done few dollars less Ive run motor both direct-drive geared using six seven cells bench air its goodie motor used Persuader Wasplike aerobatic design direct six 1 2s 7 x 6 nylon prop cut 6 x 6 really hauls turns out quite few modelers using motor similar models same good re suits seen recent Electric Flys also used motor geared 251 seven cells Kyosho 9 x 8 Caliph sec February 1988 MA good success friend Fred Ewing has motor Astro 4046 reduction-gear drive unit running seven 1 2s 11 x 6 prop well-lightened Elec tric Pronto system peaks over 150 watts static thats 23 amps dont hold MOVES 54-oz plane great ease now aware rapidly growing number Electric kits market like PT come motors supplied least available option know ot economy pro ducts Most work VERY well However Ive seen heard some combi nations stand-alone products especially some ARFs real disappointmentsthe sort thing helps assure unlucky purchaser Electric really no gooda throwback ex perience Seventies So beware industry has yet caught to Elec tric right Read whats said Electric columns various hobby magazines regarding whats good check locals experien ces As column will never knowingly willfully mislead regarding some good product experience Ive have seen Frankly dont believe other columnist would either fact theres much good stuff coming scene weve plenty good things say Coming future columns Electric wormies truly ugly critters very useful field shop buddies serious Electric modelers Also Massachusetts teacher instructs model building flying summer classes Elec trics key part program tantalizing tidbits take leave months task invite send comments questions photos SASE pleaseContinued page 162 March 1989 161 PRICE REDUCTION SALE five models speed tontrols employ latest MOSFET/IIEXFET technology feature fail safe timer whith shufs down motor event transmitter receiver reteiver battery failure coAaseodded ModelParts Kitaid TestedcaMOSFETS tKt-24C$1550 $255t$ 350 $125t EKE-iS$25tt $31Ot$ 350 $1650 tKt4RM $2600 $3200 $ 35t $1505 EKE-24t g25tt $3ttt $ism stats tKtFR $4005 Situt gum $2400 EKE-Fe S35tt $45tt Situ SiSOt EKE-24U F5 Upgrade Kir order 5 500 Revs 11595 $1995 $ 500 Au non-warronty repairs normaily $1500 repair tee Piesse $200 postage handling per order Aloe 5A5E irtlormahon Au asoembied speed controis carry lou 60 day warranty tociessnes hear sinks aiso available Mail ELDENKEN ELECTRONICS INC PO Box 1853 Arvada Colorado 80001 call today 303 4311328 01 MasteiCard accepted plsa 4% THE MID-SOUTHS GREATEST s HOBBY SHOW April 29TH & 30TH 1989 NOW IN ITS 6TH BIG YEAR Sponsored by Mid South Radio Control Association Infonnation Call901 398-9791 800-500 daiLy CST PO Box 16900 his TN 38116 COMPETITION ACCESSORIES & CUSTOMIZED K&B ENGINES RACING WHEELS KLOTZ OIL CARBON FIBER SOLID LINES ALL KINDS OF FUEL TUBING FOUR BRANDS OFGLOWPLUGS HA RD-TO-FIND HARD WARE OLD TIMER SUPPLIES COILS CONDENSERS NGK & STIlT SPARK PLUGS SILK 12 COLORS QUALITY DOPE BRUSHES 5& 7LOOP 1/4 RUBBER BANDS TRANSISTOR IGNITION SYSTEMS RESISTOR HIGH TENSION LEADS 1/2A TEXACO PLA YBOYSR KIT 1/2A TEXACO ENGINES & PARTS KSB & IGNITION TIMERS RUBBER POWER KITS PROPS TISSUE AND OTHER SUPPLIES CYANOACRYLATES & EPOXIES dont forget CAN fly Electric dead cold winter See MA December 1985 February 1987 March 1988 RC Pylon Racing/Hager Continued page 56 RCR-90-21 restricts Q500 propellers diame ter nine inches Cant comment RCR-90-22 defines aircraft eligible competition Quarter Midget event Mod el aircraft must replica actual fullscale aircraft used closed-course racing rec ord attempts cross-country racing Comment Yes thought already try ing RCR-90-23 defines aircraft eligible competition Quarter Midget event Add wording require prototype Racing air craft model based must actually have built have competed full-scale racing Comment Yes RCR-90-24 helps define what aircraft designs eligible compete Quarter Midget class event prototype design has/had built must have published have been/are available sale drawings said prototype design No comment RCR-90-25 adds starting procedure Q500 Flier must facing No 1 pylon both hands RC transmitter order consid ered prepared takeoff Comment Yes RCR-90-26 clarifies engine availability rule Q500 language commercially avail able defined Once engine declared le gal competition shall always legal Comment Yes RCR-90-27 defines registration numbers affixed Q500 models being last two three digits entrants AMA number pre ceded letter N must least inch high shall placed both sides fuselage upper wing surface Comment This already requirement spelled out elsewhere rule book rule necessary RCR-90-28 changes chord/span dimensions required Q500 wings minimum wing thickness shall least P/16 least 47 span Cant comment RCR-90-29 clarifies scoring system used Pylon Racing winners three- two-plane matrixes receive appropriate scores Comment Yes RCR-90-30 clarifies meaning flier being prepared takeoff Quarter Midget flier must facing pylon No 1 both hands RC transmitter considered prepared takeoff Comment Yes RCR-90-31 changes language describing registra tion numbers Quarter Midget Comment Same -27 above RCR-90-32 clarifies fuselage cross sections Quarter Midget adding information end paragraph 8 QM rules paragraph will read oss-sectional contours cheek cowls canopy must have half-inch ra dius outermost surfaces one-inchdiameter ball should fit inside tangent outer surface Comment Yes RCR-90-33 requires muffler systems used Quarter Midget expansion chamber tuned pipe tuned-pipe muffler magic muffler types Flow-through types would allowed Comment No Tuned pipes tend make fast go faster thereby widening gap tween novice expert RCR-90-34 clarifies engine availability require ments Quarter Midget Once engine de clared legal competition shall always le gal Comment Yes Ive Racing about 20 years now Ive seen several types Racing come go Ive seen rule changes too make com ments based experience opin ions suggestions Please read proposed changes yourself make up own mind sure relay feelings RC Racing Contest Board member AMA dis trict Hey people Its over year since moved new address Some still sending stuff old address Please note new ad dress listed logo column monthright top See Races 162 Model Aviation PRACTICAL SIZED GIANT SCALE MODEL PLANS Fiberglass Cowlings Canopies Available F-i 5 Span 77 DC-311/2 1140Span$4200 F4U CORSAIR2 1/4 193Span$3000 ASMS ZERO2 1/2 191Spai$3000 sForRK-20 CURTIS P402 1/2 194Span$3000 40 DuctedFans AT-6 TEXAN24 1101Span$3000Phantom35Span$1000 F8F BEARCAT2 1/2 156Span$3000Viggen32Span$1000 FOKKER DR-i27 163Tripe$2700Catalog Plaas Accessories SuppliesF-is36Span$1000 Credited First Order $25 MorePlan Canopy$1500 Order Nick Ziroli29 Edgar Dr Smithtown NY 11787 USA516-234-5038 JUMSIIVI Id I. AVERAGES OVER 9000 PROPS Ii IMMEDIATE SHIPMENT ON VISA/MC SPECIALISTS IN CUSTOM COX TEE DEE & REED ENGINES 020S 049S 051S & 09S ALL CUSTOM & STOCK PARTS VAILABLEINDIVIDUALL Y ORDER BY MAIL OR PHONE 619 728-4355 SORRY NO COD VISA & MASTERCARD WELCOME MINIMUM MERCHANDISE ORDER $1000 SHIPPING & HANDLING FEE $150 FOR INSURANCE ADD $100 STOCK ORDERS SHIPPED WITHIN 24 HRS
Edition: Model Aviation - 1989/03
Page Numbers: 54, 55, 160, 161, 162
LETS OPEN follow-up last months column issue discussed Electric col umn November 88 Model Builder Mitch Poling reference charac terization motors readers technically inclined Now wish refer ence December 88 issue MB continu ing info same subject also aithored Mitch Im sure will find topi cal area much interest Readers interests vary great deal evi denced incoming mail fact very wide spread interest has always present range covers very simplest Electric mattersthings take granted stop others coldto advanced techni cal issues such just referenced try cover wide variety column over period time course readers would always like see attention dedicated partic ular interestssomething contradictory something everyone format general things dont eventually get cover certain specialized topics have no fa miliarity Thats just way its gotta folks respect latter statement occasion ally someone writes specialized interest perhaps Helicopter FAI Giant Scale Elec tric Whatever inquiry dont have famili arity matter Ill always try refer writer someone does So dont see something covered column want know about please write include SASE please Ill best provide direct swer least reference can neither Ill tell too PT Electric Great Planes proving very good performer locally Ive flown sev eral have seen dont fly well would hesitate recommend model kit instructions excellent months photos details PT struc ture happens same model raffled off September 1988 Electric Fly Lo cal expert Fred Ewing built kit did devi ate slightly written instructions Specifi cally preferred cover tail assembly separate item attach completed covered fuselage structure instructions de scribe covering horizontal vertical tail surfaces glued place fuselage Per sonally always cover separately leaving necessary wood exposed uncovered glue joint Fred tells otherwise did follow plans quite closely weighing components went along directed instructions Following weight guidelines having installed minisized RC flight system came out almost two ounces less recommended seven-cell tar get weight 50 oz all-up weight 48 Both us flight tested plane week before meet flew just great PT has interesting behavior characteris ticthe way lands model designed trike gear having nose gear fixed steerable Landings breeze begin ners plane just seems touch down Goldbergs Electric Power Pod kit detailed instructions structure cowling motor prop spinner has provision internal motor control servo Pods usable 2-Meter Gliders 6-cell 12 Ah Ni-Cd battery pack included mounts Gliders fuselage 54 Model Aviation Radio Conoi Electrics Bob Kopski 25 West End Dr Lansdale PA 19446 Author Kopski talks about Great Planes PT Electric month likes kits thorough instruction manual Note lightening holes structure Hint motor rattles running wrap turn two plastic tape around its rear fits tightly hole fuselage former Author notes PT usually lands nicelyif set up approach well recommends installing speed controller help hug ground no tendency nose-over other funny things course have approach earth reasonable attitudebut PT will rest nicely fairness must comment takeoffs grass strips stock power system best very mar ginal hand launches relatively easy other hand have no doubt would eas ily ROG smooth hard surface Ive also seen PTs 15-size cobalt systems completely changes grass takeoffability story Since just mentioned stock power sys tem Ill expand bit PT supplied economy Mabuchi motor Thrust master has flux ring photo shows motor mounted place plane sup ported rear former having round cutout front small plywood plate screwed both motor first fuselage former opening first former little oversize some adjustment range side thrust available look closely can see small amount right thrust installationa good trim have high-wing cabin-style models some others too Ive opportunity bench run two sam ples Thrustmaster motor functions comfortably recommended prop 8 x 4 nylon battery made up either six seven Ni-Cd cells six cells average rpm during rundown about 9300-9400 90 watts input seven cells jumps about 10400 rpm 125 watts PT flies nicely either way person ally recommend using seven 12 Ah cells speed control Thats what built Ewing What youll get return very nicely flying combination plenty peak power combined comfortably long flights throttle reduced friend Fred built model did power system installation opted some personal preferences wired way included speed control arm ing switch fuselage-surface-mounted charg ing jack Astro P/N 4030 planesand others locallyhave charge jack See photo July 1988 issue MA page 46 allows EASY charging connection out taking battery out plane out associated wear tear supplied Tamiya battery connector PT designed easy-open battery hatch fuselage bottom allow convenient battery removal/re placementBUT personally dont like exer cise economy connectors unnecessarily connectors matter Ito Ie remove batteries between flightsId imme diately change Sermos connectors bat tery harnessContinued page 160 battery needs call write B&P Associates PO Box 22054 Waco TX 76702-2054 817662-5587 new electric starter battery pack cuts cord has always tied starter power panel Discover freedom being able start plane wherever added safety less wire get caught prop charge hefty 4 Amp/hour pack will take through weekend flying power enough spare dont stop have Ni-Cads virtually size imaginable cut experimenter free design whatever takes make yours best setup field March 1989 55 Dr John Mountjoy Winston-Salem NC builds lots Electrics stock Ace RC 4-60 kit powered sport 60 co balt motor running 28 1200 mAh cells turning 135 x 8 prop direct drive Plane weighs 96 lb uses Coverite Micaflim wing Coverite Press-On fuse lage Doc claims plane does everything wants Motor held its mount Sulli van Gold-N-Rod yellow inner tubing B&P Associates Gives Total Flight Line FREEDOM AIR WOLF EPOXY FIBERGLASS FUSELAGES TAKES MOST 50-60 MECHANICS OTHER MODELS AVAILABLE LARRY JOLLY MODEL PRODUCTS $20000 5501 WCOMO SANTA ANA CALIFORNIA 92703 714 826-6861 NEW BY POPULAR REQUEST LARGE SCALE ENGINE CYLINDERS PRATT WHITNEY WASP 4 WRIGHT J-5 WHIRLWIND Molded high-impact styrene dummy cylinders feature deep cooling fins utmost realism Both Wasp Whirlwind types cylinders available two different large scales 1/5th 2 4th 3 ts include assembly instructions Smaller sizes also offered Note units may modified resemble other cylinder types Send $3 full-color catalog featuring aircraft paintings suitable framing WILLIAMS BROTHERS INC DEPT MA 181 PAWNEE STREET SAN MARCOS CALIFORNIA 92069 best joints made least glue clamping two pieces squeezing out ex cess glue made joints thicker glue glue pulled apart chunks rather shearing along whole surface strength very low no about one-fourth strength well-made joint good joint between CF balsa fails pulling slivers balsa off piece glue torn Bonds between two materials weakest Glue joints between CF spruce much stronger CF/balsa fail combination pulling some splinters out wood shearing some glue itself Joints between CF CF fail mostly separating gluelaminating interface well-sanded surfac es strength CF/CF joints close CF/spruce maybe bit Some joints taxed tension machine reengineered order break sam ples Aliphatic glue makes weakest bond tested Next 5-minute epoxy fast epoxy somewhat weaker slower epox les cyanoacrylate strongest quite bit being about twice strong slowest ep oxy four times strong fast epoxy average breaking shear stresses sam ples CF/CF CF/spruce given below Glue Average Strength psi Aliphatie 1220 Epoxyfast 5-mm 1530 Epoxymedium 30-mm 2190 Epoxyslow 3-hr 3410 Cyanoacrylate 6560 summary want good joint tween CF/epoxy laminate spruce other laminate sand until shiny spots disappear clean put Slow Zap squeeze extra glue out Thats best joint Well thats about month Coming near future will column dedicated purely flying wings canards have know exciting wings canards would like see included feel free send some information photos RC Electrics/Kopski Continued page 55 leads return past topic Economy Electric say past because back August 86 issue addressed great length topic get Electric economi cally really realizing have seriously revisited subject inany depth since So guess what Readers have both inquiring about reminding fact some have hinted Ive abandoned subject area least intentionally Ill now try make up lost time time referenced economical Astro motor can style worked very well used motor several years did local Electric-flyin friends writing column Astro dropping economy motors its line setting up concentrate much higher quality product ar ray now place So what recommended August 86 issue immediately obsoleted has brought letters over years still does specifically lots readers still have either burning interest pressing need thing ECONOMICALLY Putting straightforward fashion Some modelers have limited resources simply able go best merchandise kinds considerations reason wrote col umn first place Does mean should deprived Electric enjoyment DEFI NITELY NOT Having just offered some info Great Planes PT its Thrustmaster motor let fer motor excellent example eco nomical way power economy Etectric Thrustmaster available separately around $25 retail think motor can buy confidence use different 05-size planes No its cobalt No brushes replaceable Yes its relatively heavy its power handling capability BUT will fly fly fly heck out model finally wears out whatever should very much have gotten moneys worth Out effect motor throwawaybut what After potentially several hundred Yes really mean several hundred flights really cares Ive flown economy can motors hundreds flights experience did include Thrustmaster time feel Id expect about same results Used properly correct battery prop motor should give LOTS LOTS continuing funeconomically what plane Well obvious choice PT thats Put motor nose Two-Meter Glider 8 x 4 direct-drive prop youve got simple effec tive power systemand thats cheap may competitive higher performance cobalts want fly Electric fun budget way go course complete economy system in160 Model Aviation Advanced Transmitter Capabilities Low Cost TM ATRCS Stores Four Aircraft Setups Includes Seven Different Servo Configurations Individual Surface Travel Limits Centering Single Switch Presets Launch Speed Modes Full Trailing Edge Control Enhanced Mixing Functions Crow Landing Capability Fully installed kit Control Systems Laboratorie 238 5 Hillview Dr Milpitas CA 95035 408 946-4142 Airand Module 75PlM registered trademarks Airtronics Inc A-tracks Works with standard FM/PPM Receivers Airtronics PCM Receivers Convertsthe Module advanced computerized control system Advanced Technology Radio Control System volves just motor other neces sities discussed detail August 86 column Briefly six- seven-cell 12 Ah NiCd battery pack lots around model cars economy charger packs also lots around use RC cars basically need next step up fun department better motor rather speed control Thus can economically start out minimums described put speed control wish list future addi tion As example let refer once again December 1988 column picture Nytique Amptique derivative economy motor pod happens Kyosho 600E $1889 discount running six 12 Ah cells turning 7 x 6 Rev-Up very nicely performing combination adequate power slowly easily pull 44-oz night flier up low cost honest intended use 035 co balt finishing plane did have available used what did have 600E Because bought about year previously along several other low-cost mo tors search such economy candidates might recommend youand never got around covering topic Yes actually spent bunchabucks specifically purpose gathering passing along such info Frankly have good fortune having cobalt-equipped models actually no need additional alternative motors Anyway until now come together column Im happy Ive finally gotten around shar ing Another motor might consider Kyo sho 360 PT less economical choice point may want reconsider cobalt want show what can done few dollars less Ive run motor both direct-drive geared using six seven cells bench air its goodie motor used Persuader Wasplike aerobatic design direct six 1 2s 7 x 6 nylon prop cut 6 x 6 really hauls turns out quite few modelers using motor similar models same good re suits seen recent Electric Flys also used motor geared 251 seven cells Kyosho 9 x 8 Caliph sec February 1988 MA good success friend Fred Ewing has motor Astro 4046 reduction-gear drive unit running seven 1 2s 11 x 6 prop well-lightened Elec tric Pronto system peaks over 150 watts static thats 23 amps dont hold MOVES 54-oz plane great ease now aware rapidly growing number Electric kits market like PT come motors supplied least available option know ot economy pro ducts Most work VERY well However Ive seen heard some combi nations stand-alone products especially some ARFs real disappointmentsthe sort thing helps assure unlucky purchaser Electric really no gooda throwback ex perience Seventies So beware industry has yet caught to Elec tric right Read whats said Electric columns various hobby magazines regarding whats good check locals experien ces As column will never knowingly willfully mislead regarding some good product experience Ive have seen Frankly dont believe other columnist would either fact theres much good stuff coming scene weve plenty good things say Coming future columns Electric wormies truly ugly critters very useful field shop buddies serious Electric modelers Also Massachusetts teacher instructs model building flying summer classes Elec trics key part program tantalizing tidbits take leave months task invite send comments questions photos SASE pleaseContinued page 162 March 1989 161 PRICE REDUCTION SALE five models speed tontrols employ latest MOSFET/IIEXFET technology feature fail safe timer whith shufs down motor event transmitter receiver reteiver battery failure coAaseodded ModelParts Kitaid TestedcaMOSFETS tKt-24C$1550 $255t$ 350 $125t EKE-iS$25tt $31Ot$ 350 $1650 tKt4RM $2600 $3200 $ 35t $1505 EKE-24t g25tt $3ttt $ism stats tKtFR $4005 Situt gum $2400 EKE-Fe S35tt $45tt Situ SiSOt EKE-24U F5 Upgrade Kir order 5 500 Revs 11595 $1995 $ 500 Au non-warronty repairs normaily $1500 repair tee Piesse $200 postage handling per order Aloe 5A5E irtlormahon Au asoembied speed controis carry lou 60 day warranty tociessnes hear sinks aiso available Mail ELDENKEN ELECTRONICS INC PO Box 1853 Arvada Colorado 80001 call today 303 4311328 01 MasteiCard accepted plsa 4% THE MID-SOUTHS GREATEST s HOBBY SHOW April 29TH & 30TH 1989 NOW IN ITS 6TH BIG YEAR Sponsored by Mid South Radio Control Association Infonnation Call901 398-9791 800-500 daiLy CST PO Box 16900 his TN 38116 COMPETITION ACCESSORIES & CUSTOMIZED K&B ENGINES RACING WHEELS KLOTZ OIL CARBON FIBER SOLID LINES ALL KINDS OF FUEL TUBING FOUR BRANDS OFGLOWPLUGS HA RD-TO-FIND HARD WARE OLD TIMER SUPPLIES COILS CONDENSERS NGK & STIlT SPARK PLUGS SILK 12 COLORS QUALITY DOPE BRUSHES 5& 7LOOP 1/4 RUBBER BANDS TRANSISTOR IGNITION SYSTEMS RESISTOR HIGH TENSION LEADS 1/2A TEXACO PLA YBOYSR KIT 1/2A TEXACO ENGINES & PARTS KSB & IGNITION TIMERS RUBBER POWER KITS PROPS TISSUE AND OTHER SUPPLIES CYANOACRYLATES & EPOXIES dont forget CAN fly Electric dead cold winter See MA December 1985 February 1987 March 1988 RC Pylon Racing/Hager Continued page 56 RCR-90-21 restricts Q500 propellers diame ter nine inches Cant comment RCR-90-22 defines aircraft eligible competition Quarter Midget event Mod el aircraft must replica actual fullscale aircraft used closed-course racing rec ord attempts cross-country racing Comment Yes thought already try ing RCR-90-23 defines aircraft eligible competition Quarter Midget event Add wording require prototype Racing air craft model based must actually have built have competed full-scale racing Comment Yes RCR-90-24 helps define what aircraft designs eligible compete Quarter Midget class event prototype design has/had built must have published have been/are available sale drawings said prototype design No comment RCR-90-25 adds starting procedure Q500 Flier must facing No 1 pylon both hands RC transmitter order consid ered prepared takeoff Comment Yes RCR-90-26 clarifies engine availability rule Q500 language commercially avail able defined Once engine declared le gal competition shall always legal Comment Yes RCR-90-27 defines registration numbers affixed Q500 models being last two three digits entrants AMA number pre ceded letter N must least inch high shall placed both sides fuselage upper wing surface Comment This already requirement spelled out elsewhere rule book rule necessary RCR-90-28 changes chord/span dimensions required Q500 wings minimum wing thickness shall least P/16 least 47 span Cant comment RCR-90-29 clarifies scoring system used Pylon Racing winners three- two-plane matrixes receive appropriate scores Comment Yes RCR-90-30 clarifies meaning flier being prepared takeoff Quarter Midget flier must facing pylon No 1 both hands RC transmitter considered prepared takeoff Comment Yes RCR-90-31 changes language describing registra tion numbers Quarter Midget Comment Same -27 above RCR-90-32 clarifies fuselage cross sections Quarter Midget adding information end paragraph 8 QM rules paragraph will read oss-sectional contours cheek cowls canopy must have half-inch ra dius outermost surfaces one-inchdiameter ball should fit inside tangent outer surface Comment Yes RCR-90-33 requires muffler systems used Quarter Midget expansion chamber tuned pipe tuned-pipe muffler magic muffler types Flow-through types would allowed Comment No Tuned pipes tend make fast go faster thereby widening gap tween novice expert RCR-90-34 clarifies engine availability require ments Quarter Midget Once engine de clared legal competition shall always le gal Comment Yes Ive Racing about 20 years now Ive seen several types Racing come go Ive seen rule changes too make com ments based experience opin ions suggestions Please read proposed changes yourself make up own mind sure relay feelings RC Racing Contest Board member AMA dis trict Hey people Its over year since moved new address Some still sending stuff old address Please note new ad dress listed logo column monthright top See Races 162 Model Aviation PRACTICAL SIZED GIANT SCALE MODEL PLANS Fiberglass Cowlings Canopies Available F-i 5 Span 77 DC-311/2 1140Span$4200 F4U CORSAIR2 1/4 193Span$3000 ASMS ZERO2 1/2 191Spai$3000 sForRK-20 CURTIS P402 1/2 194Span$3000 40 DuctedFans AT-6 TEXAN24 1101Span$3000Phantom35Span$1000 F8F BEARCAT2 1/2 156Span$3000Viggen32Span$1000 FOKKER DR-i27 163Tripe$2700Catalog Plaas Accessories SuppliesF-is36Span$1000 Credited First Order $25 MorePlan Canopy$1500 Order Nick Ziroli29 Edgar Dr Smithtown NY 11787 USA516-234-5038 JUMSIIVI Id I. AVERAGES OVER 9000 PROPS Ii IMMEDIATE SHIPMENT ON VISA/MC SPECIALISTS IN CUSTOM COX TEE DEE & REED ENGINES 020S 049S 051S & 09S ALL CUSTOM & STOCK PARTS VAILABLEINDIVIDUALL Y ORDER BY MAIL OR PHONE 619 728-4355 SORRY NO COD VISA & MASTERCARD WELCOME MINIMUM MERCHANDISE ORDER $1000 SHIPPING & HANDLING FEE $150 FOR INSURANCE ADD $100 STOCK ORDERS SHIPPED WITHIN 24 HRS