GeorgeM Mye D Radio Thchnque ABSTRACT Super transmitters flight packs synthesizers FLIGHT PACKS What manufactur ers up now have engineers concen trating top-of-the-line crystal-controlled trans mitters Tx feature computer memories store settings servo directions mixing throws etc bunch airplanes WHAT GOOD ARE THEY IF YOU CANT BUY FLIGHT PACKS FOR THE OTHER PLANES Editors note flight pack part RC system goes plane RMcM modelers have complained about high cost general unavailability flight packs say although can buy ser vos hattey packs switch harnesses over counter its receivers Rxs hard find gave some money phone companies learn thats true make up flight pack individ ual parts purchased over counter pay complete new sys tem People complain about irrationality ing forced buy extra Tx battery charger flag servo trays servo arms screws eyelets neck strap instruction manuals carton want Rx battery pack switch har ness couple servos have sympa thy complaint reasonable thing to buy complete package less money out pocket discard parts dont want buy food eats corneobs can now see flight pack availability problem basically receiver availability pro blem might wish could convince dealer least stock Rx manufacturer plus some crystals sounds like good idea until discover manufacturers list half-dozen Rxs try discourage sales FM set crystals consumers Practically everything now FM FM/ PCM FM systems including PCMs must re checked direction amount frequency de viation following crystal change Since sumed no consumer set up may exceptions nobody wants product blamed what happens next after simply swap crystals So try limit crys tal availability servicemen have equipment right fact FM SYS TEMS MEASURE FREQUENCY DEVIA TION TO EXTRACT CONTROL INFORMA TION what makes field-swapping FM crystals such bad idea might tempted USE ANY Rx YOU CAN GET make up flight pack Unfortu nately half FM systems market uti lize frequency deviation direction other half opposite mixing brands may help much systema use com patible deviations servo plugs probably wont match Another problem new 1024 PCM codes arent compatible old 512 codes Come think maybe Id better say couple words about what PCM means PCM stands pulse-code modulation transmitter senses positions of its con trol sticks knobs switches encodes formation bunch words made up num bers binary code transmits re ceiver computer receiver detects numbers translates commands servo positions OnIOff switch commands word-to-position correspondence can arbi trary can certainly differ between manufactur ers As general rule isnt necessary align new FM FM/PCM Rx particular Tx anymore because Tx Rx now aligned precise frequency counters signal generators factory service center Take off shelf try Only see ground range problem should need return Tx Rx compatibility tuning Right now people inside expecting see need compatibility retuning Tx Rx after about three years use 34 Model Aviation 70 Froehildi Faui Rd Hldcsvlk NY 11801 Niel Frangeshs Duxbury MA striking lull-scale PiUs S-iT has black/yellow paint job red pinstripes top Unlimited-category acrobatic pilots Northeast way puts plane through its paces makes RC Pattern model look underpowered size prop ship indicates lots horses inside cowl Note aileron-boost aerodynamic spade lower aileron Photographed Red Lion NJ Registration num ber fuselage Nil N reads OK either upright Inverted Oblique view Futabas PCM 1024A transmitter Model FP-T9VAP shows its computer key board hints programming possibilities super transmitter can store control setup info up 6 aircraft Futaba stocks both receivers flight packs use Back flight packs basic problem flight packs SOMEBODY has stock Rx channel line manu facturer order make just sale suming interchangeable crystals avail able 50 channels due 1991 could lot Rxs about 750 consider Airtronics Futaba JR Polks World En gines lines Never mind might want pack different servos Since no dealer will stock 750 Rxs needs access someone will Meet some Ace RIC Inc makes AM Rxs finished form kits dealers offers singleconversion Silver Seven receiver $5395 less connectors dual-conversion Model 91 $9995 Ic plus line servos Rxs can consumer-tuned kits factory-tuned built-up versions Replacement Rx crystals available bands Ace ProLine equipment No FM equipment available manufac turer yet Airrronics Inc stocks type Rx catalog channel its distributors Airtronics used catalog flight packs didnt sell well Distributors didnt want stock multitude packages Its in-house service center ONLY Airtron ics service center writing will handle necessary frequency conversions crystal re placements will sell Ham crystals Hams 27 & 75 MHz crystals distributors will sell 72 MHz Aircraft Only Tx crystals Airtronics will have Ham-band equipment 50 & 53 MHz 1989 JR radios Hobby Dynamics Distributors dis tributes JR radio systems Circus Hobbies Kevin Burner told Circus Hobbies warehouse Las Vegas Hobby Dynam ics warehouse Champaign IL linked common computer system dealer orders stock shipped nearest warehouse time conversation 15 Rxs type 72 MHz chan nels warehouses JR will sell Rx crystals doesnt recom mend move two channels frequency system sold Kevin also told president Hobby Dynamics Mike Cioili has JR ser vice center turning work around 36 hours thought youd like know Futaba Corporation America stocks both Rx flight packs flight packs priced below sum component prices arent very popular distributors and/or deal ers Normally least 100 Rx type available except case newest prod ucts Rxs go systems Eloy Marex told Futaba seils matched sets crystals recommends move two channels frequency sys tem purchased Polks stocks extra ARI-03-2681 FM Rx channel $3495 orders batches 1000 Poiks once offered flight packs werent attractive wholesalers very few made dealers shelves Louls Poik told new Rxs have slim F connector shouldnt problem buy new servos $1295 ARI-03-7410 Molex to-F adapters available $295 use older equlpment Continued page 106 Tooting Own Horns because Robar Ball Liflk Horns have lot tO t about rOtatiflQ kifl~ ble piicFmount realiStIc Thatsthreeole variety xact ushrOdsdwithOutes Contro aies anY ap stur lable bail linkm1 havTheyre aval hter clea scale pearance oU much ij9add UP ner m aPd give d yo- nleS5 areevot control just expensive 3 dozen $400 ea 4 dozen $375 ea 5 dozen $360 ea 6 dozen $355 ea Add $400 shipping per order Please send good black white art reproduction Please specify quantity Trans-Cover colors ink color ordering Limit ink color per order Now fliers over world have neat inexpensive functional way protect R/C transmitters dirt dust rain Custom printed club logo Constructed durable canvas lifelong Velcro closure Available red blue green yellow orange black Colors can mixed size fits Send check money order KD GRAPHICS 3315 13th Avenue Columbus GeorgIa 31904 404/323-2787 9am-Spm EST March 1989 35 yOJ Fp\JOItE $OBB suPP~1E 145-CO VER Cerdfied Airtronics C Gold Label \Super Narinw Band Dual Receivers set 1991 certified independent tests state art FM PCM receivers meet eeed AMA RCMA specifications guidelines RIC operation 191 beyond compact~htweight 1ghfOrnianCe Conver Receivers pivduce dearei efficient signal less susceptible specific types intemiodulation pwblems SpclflcatIou Mitsui FM mid PCM 91d Label Super Nanew Band Dual Conversion fimioers Receiver9296592765 TransmitterWngtiard PCM 4 & 6nguard FM 4 & 6 92785 Module FM 92985 Spectra/Quantum PCM Length2427 Mdth15136 Height08085 Weight2 oz2 oz 2 oi 2 oz AdjacentBetter 694 dBBetter 813 dB Channel85KHz@85KHz Rejection-773 dB @ 85 KHz692 dRo 85 KHz Image671 dB7D8 dB Rejection 3rd QIP59 dBM38 dBM Airtitnics .ii Conversion Receivers advantages superior image rejection impiuved sensitivity nanvw ban maa mum interference rejection and contm performance comes dual con version receiver technology tters isnt gold Aiinics Gold Label Receivers set th@ gold standard 1991 beyond Contact Airtronics prices availability Safety/Preston Continued page 22 small fire thinking extinguished fire later reignited No firefighter worthy badge will complain being called out size type fire CBs mobile phones use today gets easier day contact fire department ambulance service Have safe month see warning la bel product youve used before please take time read Sterling/Baker Continued page 33 shown plans used about 8 oz Plug hole balsa repaint Flying Whenever take Sterling flying field usual question get engines start pro cedure follows Start left out board engine get running smooth near-peak rpm idle engine stop cloth Repeat engine Top off tanks Set throttle full open start engine left right What usually happens engine starts first flip dont bother syn chronize engines may adjust throttle engine does seem smooth have two choices staffing takeoff run First have engines full throffle have someone give plane short running start running start too slow plane will veer sharply left fun games getting track straight steerable tail wheel comes handy have cor responding pilot Sterling says full-size plane famous same veering tendencies although right Second choice start half throt tle steer rudder plane picks up speed feed throttle either case let ground speed build up lift tail let Sterling roll quite ways before giving up-elevator break ground have unfortunate habit palling planes off ground too soon happens Sterling will wallow around will eventually sort itself out fly highly recommend getting lots speed before leaving ground making gen tle climb cruising altitude Once airborne Sterling reasonably fast flies very smoothly extremely realistic majestic air Landings made just like full-size air plane Make wide base leg set up long final approach Pull throffles back enough get steady descent few feet off ground can pull throffles idle plane will make nice wheel landing will roll before tail settles As four-engined airplane best procedure land four en gines running Sterling flies well three engines engine quits keep nose down prudent land soon possible hope enjoy Sterling im pressive aircraft both ground air Radio Technique/Myers Continued page 35 World Engines stocks Rxs its Expert series channels RC18 abovebut rip flight packsfor its dealers Molex connector still used World still maintains its metalcased Tx module intended inter changed field Jim Lanterman told World Engines Expert Rx will certified AMA Guide lines soon Proprietary changes anticipated will differentiate line Polks US-made 5-16 large servo still offered What about synthesizers think its time develop some synthesizers flight pack Rx could satisfy Tx vice versa cant get dealers stock flight packs may cost extra make up flight pack componentsforever Certainly dealers likely stock couple UNIVER SAL Rxs ie synthesized tuning great crystal ones dealer would 106 Model Aviation sGoodasGil Airtivnics \ offers oppor $\o1den tunity meet challenge lowcost RIG system upgrade service converts present Airbnnics AM transmitter receiver 1991 AMA Gold label specifications opemtion Airtmnics major manufachnr offering compre hensive RIG system conversions economical price XAS stand behind compatible line high quality PJC systems accessories unmatched 1991 system upgrade seivice Alrtronlcs 1991 RICsystmm conversions $7495 *XLlCmpionshiplSR AM FM72 MHz Dual Conversion 1991 Receir s $200 ShipIngIHaridlisg $5995 MHZ Dual Conversion 1991 Receiver S2 Sluppln&tandtng $5995 **Wnguard AM FM Dual72 MHz Conversion 1991 Receiver ~oo ShsgMatsg Return RF Module Receiver An additional checkout charge will incurred complete transmitter returned * Return entire Vanguard AM transmitter receiver Prices sub]ect change notice Airtmnics want known best just best known piuvides alternative expen replacement NowthelatestnewAirtiunics 1991 RIG transmitter receiver technology available cus tomers system modulation changes indude new receiver RE Module aystal flag alignment - AIRTRONICS 11 Autry Irvine CA 92718714 830-8769 have stock two spare Rxs FM tiny Rx Electrics Sailplanes etc standard-size PCM Most super memory Txs have PWM/PCM capability buy have new mixing tricks available old FM-equipped Sailplane instance PWM other kind FMpulsewidth modulation transmitter doesnt send out bunches numbers Instead correlates stick position width particular pulse train pulses transmits frame updated infonnation RMcM Tx has synthesizer think much easier will use way Just remember change old Rx right time 1991 SRF radios would boon SPORT FLIER often take Channel RC48 system have field discover long lines use Rc48 no body other channels can buy 40-channel CR transceiver $30 181-channel VcR TV Rx $200 automobile radios cassette decks signalseeking synthesized tuners $200 etc much can cost build RC Txs Rxs synthesizers Ill bet would cheaper stocking 101 crystals per manufacturer dealers would love because could concen trate selling product instead channel Kraft offered synthesized Txs 1983 certain rude individuals took delight calling Dial-a-crash systems course fact system turned off before would switch new channel didnt impress Canadians authorized 50 channels soon possible didnt sneer stead snapped up Kraft SRF systems could find Thats rarely see US think US modelers will snap up synthesizers someone offers 1991 Im willing admit possibility some user might forget what channel dialed last Bob ever have LOOK synthesizer control panel could replace tiny hard-to-see Kraft rotary switches LCD display Tx pushbutton step ping through channels like setting LCD watch 1-in LCD put right next antenna would little excuse forget ting channel dialed nuisance Kraft SRF Rx dig airplane switch channels Ive got solution problem can put Tx antenna near Rx antenna let Rx look control signal like signal-seeker car radio Once control has established can put plug air plane lock Rx channel might part charging jack Wouldnt lot simpler sure would main problem Kraft SRF never second generation such improvements would have incorporated Another complaint about Kraft SRF Rx its size Yet fits nicely Baron 28 smallest 25-powered Helicopters Kevin Burner told new JR PCM-10 Rx 10 channels PCM smaller old Cen tury 7 Rx seven channels FM See what mean about later generations have playing What else can sell game Txs de signers have completely overlooked now com paratively simple possibility three-position power switch Done correctly three positions would OFF meaning no RF transmission AUX ON meaning bullt-in monitor has turned look other transmissions channel ON meaning RF being transmitted Rx synthesizer used Tx fre quency generator modiling synthesizer act scanning monitor no problem Tx could help find interference-free channel fly Doesnt make lot sense Wouldnt take care Forgot channel syndrome particularly auto mated transfer control Tx quiet channel would after pressed enabling button would turn airplane Rx pull plug wait find Tx put plug go flying might good idea put retaining screw plug system prices exceed $1000 think time get lot use out complex Tx now Just learning time profi cient use Tx has become big investment hobby time wouldnt surprise see complex systems boxed videotape explains nuances control setup possibil ities Polks Merlin comes audiotape Servo pricing another matter Tom Runge told American company cant make plastic parts servo price foreigners charge complete servo What means lot hand labor goes assem bling servo servos may never cheaper un til design simplified andlor production automated see big opportunity smart designer motor gears key Somebody should looking printed circuit motors stepping motors linear induction mo tors etc Perhaps have noticed new sys tems packaged fewer usual four servos order make competitive price want badly enough its obvious March 1989 107 youve ever fuel tank split leak fuel fuselage know important install tank can trust Du-Bro Products manufactures complete line rugged polypropylene tanks 10 convenient sizes 2 oz 24 oz guaranteed life against splitting leaking money back tank comes complete soft brass tubing hardware Protruding front lip prevents fuel lines being crimped hard landings Single twin vent design gas conversion stopper available use tank gasoline Cat No 400 Visit local Hobby Shop fuel hook up accessories 0 Fuel Tubing Tank Filter Kwik Fill Fuel Value Gas Gb Fuel In-Line Fuel Filter Kwik Fill Fuel Pump 77 can get Rxs flight packs have difficulty its caused distributors dealers perhaps exacerbated lack syn thesizers Ive playing What game essay see anything attracts Xeroxlm column circle parts like send marked-up copy appro priate person named below polite dont need new enemies Ace RIC Tom Runge Ace R/C Inc PO Box 51 1B12 Higginsville MO 64037 Airironics Jack Albrecht Airtronics Inc 11 Autry Irvine CA 92718 Futaba Ron Heib Futaba Corp Amrica 555 West Victoria St Compton CA 90220 Fu taba may have relocated Irvine CA adrest time printed JR Kevin Burner Hobby Dynamics 4105 S Highland Champaign IL 61821 Polks Gil Rose Aristo-Craft/Polks Model Craft Hobbies 500 5th Ave New York NY 10010 World Engines Jim Lanterman World En gines 8960 Rossash Rd Cincinnati OH 45 36 get few thousand letters just ii make some kind impression would impression letter could fully say am interested PCM S Whatever would useless wil additional flight packs reasonable prices Sailpiane/Blakeslee Continued page 42 iight take uth Liper bout have little designer us look kit think Id like try little longer wing maybe different airfoil past just eyeball design ing computer design program can actually see what happens flight performance make changes No need trial error think wonderfuland particular value tlose seriously designing own planet Davids program sells $3500 will soon include latest data Selig Donovan wind tunnel tests Princeton Ad dress 1335 Slayton Drive Maple Glen PA 19002 Next up panel discussion F3B Sailpianes panel Larry Jolly Bob Sealy Rich Burnoski Wayne Fre dette myself began Bob show ing slides F3B Team Selection Finals held Los Angeles September Larry Seth Dawson Rich Spicer made team Rich Burnoski didnt make team talked about likes fly F3B anyway Its ultimate said F3B World Championships Olympics Sailplane flying Just us dont have skills qualify US Olympic team F3B Finals devoted best fliers country However Olympics fun watch high-level F3B com petitionContinued page 143 108 Model Aviation L Can Cap Fittings
Edition: Model Aviation - 1989/03
Page Numbers: 34, 35, 106, 107, 108
GeorgeM Mye D Radio Thchnque ABSTRACT Super transmitters flight packs synthesizers FLIGHT PACKS What manufactur ers up now have engineers concen trating top-of-the-line crystal-controlled trans mitters Tx feature computer memories store settings servo directions mixing throws etc bunch airplanes WHAT GOOD ARE THEY IF YOU CANT BUY FLIGHT PACKS FOR THE OTHER PLANES Editors note flight pack part RC system goes plane RMcM modelers have complained about high cost general unavailability flight packs say although can buy ser vos hattey packs switch harnesses over counter its receivers Rxs hard find gave some money phone companies learn thats true make up flight pack individ ual parts purchased over counter pay complete new sys tem People complain about irrationality ing forced buy extra Tx battery charger flag servo trays servo arms screws eyelets neck strap instruction manuals carton want Rx battery pack switch har ness couple servos have sympa thy complaint reasonable thing to buy complete package less money out pocket discard parts dont want buy food eats corneobs can now see flight pack availability problem basically receiver availability pro blem might wish could convince dealer least stock Rx manufacturer plus some crystals sounds like good idea until discover manufacturers list half-dozen Rxs try discourage sales FM set crystals consumers Practically everything now FM FM/ PCM FM systems including PCMs must re checked direction amount frequency de viation following crystal change Since sumed no consumer set up may exceptions nobody wants product blamed what happens next after simply swap crystals So try limit crys tal availability servicemen have equipment right fact FM SYS TEMS MEASURE FREQUENCY DEVIA TION TO EXTRACT CONTROL INFORMA TION what makes field-swapping FM crystals such bad idea might tempted USE ANY Rx YOU CAN GET make up flight pack Unfortu nately half FM systems market uti lize frequency deviation direction other half opposite mixing brands may help much systema use com patible deviations servo plugs probably wont match Another problem new 1024 PCM codes arent compatible old 512 codes Come think maybe Id better say couple words about what PCM means PCM stands pulse-code modulation transmitter senses positions of its con trol sticks knobs switches encodes formation bunch words made up num bers binary code transmits re ceiver computer receiver detects numbers translates commands servo positions OnIOff switch commands word-to-position correspondence can arbi trary can certainly differ between manufactur ers As general rule isnt necessary align new FM FM/PCM Rx particular Tx anymore because Tx Rx now aligned precise frequency counters signal generators factory service center Take off shelf try Only see ground range problem should need return Tx Rx compatibility tuning Right now people inside expecting see need compatibility retuning Tx Rx after about three years use 34 Model Aviation 70 Froehildi Faui Rd Hldcsvlk NY 11801 Niel Frangeshs Duxbury MA striking lull-scale PiUs S-iT has black/yellow paint job red pinstripes top Unlimited-category acrobatic pilots Northeast way puts plane through its paces makes RC Pattern model look underpowered size prop ship indicates lots horses inside cowl Note aileron-boost aerodynamic spade lower aileron Photographed Red Lion NJ Registration num ber fuselage Nil N reads OK either upright Inverted Oblique view Futabas PCM 1024A transmitter Model FP-T9VAP shows its computer key board hints programming possibilities super transmitter can store control setup info up 6 aircraft Futaba stocks both receivers flight packs use Back flight packs basic problem flight packs SOMEBODY has stock Rx channel line manu facturer order make just sale suming interchangeable crystals avail able 50 channels due 1991 could lot Rxs about 750 consider Airtronics Futaba JR Polks World En gines lines Never mind might want pack different servos Since no dealer will stock 750 Rxs needs access someone will Meet some Ace RIC Inc makes AM Rxs finished form kits dealers offers singleconversion Silver Seven receiver $5395 less connectors dual-conversion Model 91 $9995 Ic plus line servos Rxs can consumer-tuned kits factory-tuned built-up versions Replacement Rx crystals available bands Ace ProLine equipment No FM equipment available manufac turer yet Airrronics Inc stocks type Rx catalog channel its distributors Airtronics used catalog flight packs didnt sell well Distributors didnt want stock multitude packages Its in-house service center ONLY Airtron ics service center writing will handle necessary frequency conversions crystal re placements will sell Ham crystals Hams 27 & 75 MHz crystals distributors will sell 72 MHz Aircraft Only Tx crystals Airtronics will have Ham-band equipment 50 & 53 MHz 1989 JR radios Hobby Dynamics Distributors dis tributes JR radio systems Circus Hobbies Kevin Burner told Circus Hobbies warehouse Las Vegas Hobby Dynam ics warehouse Champaign IL linked common computer system dealer orders stock shipped nearest warehouse time conversation 15 Rxs type 72 MHz chan nels warehouses JR will sell Rx crystals doesnt recom mend move two channels frequency system sold Kevin also told president Hobby Dynamics Mike Cioili has JR ser vice center turning work around 36 hours thought youd like know Futaba Corporation America stocks both Rx flight packs flight packs priced below sum component prices arent very popular distributors and/or deal ers Normally least 100 Rx type available except case newest prod ucts Rxs go systems Eloy Marex told Futaba seils matched sets crystals recommends move two channels frequency sys tem purchased Polks stocks extra ARI-03-2681 FM Rx channel $3495 orders batches 1000 Poiks once offered flight packs werent attractive wholesalers very few made dealers shelves Louls Poik told new Rxs have slim F connector shouldnt problem buy new servos $1295 ARI-03-7410 Molex to-F adapters available $295 use older equlpment Continued page 106 Tooting Own Horns because Robar Ball Liflk Horns have lot tO t about rOtatiflQ kifl~ ble piicFmount realiStIc Thatsthreeole variety xact ushrOdsdwithOutes Contro aies anY ap stur lable bail linkm1 havTheyre aval hter clea scale pearance oU much ij9add UP ner m aPd give d yo- nleS5 areevot control just expensive 3 dozen $400 ea 4 dozen $375 ea 5 dozen $360 ea 6 dozen $355 ea Add $400 shipping per order Please send good black white art reproduction Please specify quantity Trans-Cover colors ink color ordering Limit ink color per order Now fliers over world have neat inexpensive functional way protect R/C transmitters dirt dust rain Custom printed club logo Constructed durable canvas lifelong Velcro closure Available red blue green yellow orange black Colors can mixed size fits Send check money order KD GRAPHICS 3315 13th Avenue Columbus GeorgIa 31904 404/323-2787 9am-Spm EST March 1989 35 yOJ Fp\JOItE $OBB suPP~1E 145-CO VER Cerdfied Airtronics C Gold Label \Super Narinw Band Dual Receivers set 1991 certified independent tests state art FM PCM receivers meet eeed AMA RCMA specifications guidelines RIC operation 191 beyond compact~htweight 1ghfOrnianCe Conver Receivers pivduce dearei efficient signal less susceptible specific types intemiodulation pwblems SpclflcatIou Mitsui FM mid PCM 91d Label Super Nanew Band Dual Conversion fimioers Receiver9296592765 TransmitterWngtiard PCM 4 & 6nguard FM 4 & 6 92785 Module FM 92985 Spectra/Quantum PCM Length2427 Mdth15136 Height08085 Weight2 oz2 oz 2 oi 2 oz AdjacentBetter 694 dBBetter 813 dB Channel85KHz@85KHz Rejection-773 dB @ 85 KHz692 dRo 85 KHz Image671 dB7D8 dB Rejection 3rd QIP59 dBM38 dBM Airtitnics .ii Conversion Receivers advantages superior image rejection impiuved sensitivity nanvw ban maa mum interference rejection and contm performance comes dual con version receiver technology tters isnt gold Aiinics Gold Label Receivers set th@ gold standard 1991 beyond Contact Airtronics prices availability Safety/Preston Continued page 22 small fire thinking extinguished fire later reignited No firefighter worthy badge will complain being called out size type fire CBs mobile phones use today gets easier day contact fire department ambulance service Have safe month see warning la bel product youve used before please take time read Sterling/Baker Continued page 33 shown plans used about 8 oz Plug hole balsa repaint Flying Whenever take Sterling flying field usual question get engines start pro cedure follows Start left out board engine get running smooth near-peak rpm idle engine stop cloth Repeat engine Top off tanks Set throttle full open start engine left right What usually happens engine starts first flip dont bother syn chronize engines may adjust throttle engine does seem smooth have two choices staffing takeoff run First have engines full throffle have someone give plane short running start running start too slow plane will veer sharply left fun games getting track straight steerable tail wheel comes handy have cor responding pilot Sterling says full-size plane famous same veering tendencies although right Second choice start half throt tle steer rudder plane picks up speed feed throttle either case let ground speed build up lift tail let Sterling roll quite ways before giving up-elevator break ground have unfortunate habit palling planes off ground too soon happens Sterling will wallow around will eventually sort itself out fly highly recommend getting lots speed before leaving ground making gen tle climb cruising altitude Once airborne Sterling reasonably fast flies very smoothly extremely realistic majestic air Landings made just like full-size air plane Make wide base leg set up long final approach Pull throffles back enough get steady descent few feet off ground can pull throffles idle plane will make nice wheel landing will roll before tail settles As four-engined airplane best procedure land four en gines running Sterling flies well three engines engine quits keep nose down prudent land soon possible hope enjoy Sterling im pressive aircraft both ground air Radio Technique/Myers Continued page 35 World Engines stocks Rxs its Expert series channels RC18 abovebut rip flight packsfor its dealers Molex connector still used World still maintains its metalcased Tx module intended inter changed field Jim Lanterman told World Engines Expert Rx will certified AMA Guide lines soon Proprietary changes anticipated will differentiate line Polks US-made 5-16 large servo still offered What about synthesizers think its time develop some synthesizers flight pack Rx could satisfy Tx vice versa cant get dealers stock flight packs may cost extra make up flight pack componentsforever Certainly dealers likely stock couple UNIVER SAL Rxs ie synthesized tuning great crystal ones dealer would 106 Model Aviation sGoodasGil Airtivnics \ offers oppor $\o1den tunity meet challenge lowcost RIG system upgrade service converts present Airbnnics AM transmitter receiver 1991 AMA Gold label specifications opemtion Airtmnics major manufachnr offering compre hensive RIG system conversions economical price XAS stand behind compatible line high quality PJC systems accessories unmatched 1991 system upgrade seivice Alrtronlcs 1991 RICsystmm conversions $7495 *XLlCmpionshiplSR AM FM72 MHz Dual Conversion 1991 Receir s $200 ShipIngIHaridlisg $5995 MHZ Dual Conversion 1991 Receiver S2 Sluppln&tandtng $5995 **Wnguard AM FM Dual72 MHz Conversion 1991 Receiver ~oo ShsgMatsg Return RF Module Receiver An additional checkout charge will incurred complete transmitter returned * Return entire Vanguard AM transmitter receiver Prices sub]ect change notice Airtmnics want known best just best known piuvides alternative expen replacement NowthelatestnewAirtiunics 1991 RIG transmitter receiver technology available cus tomers system modulation changes indude new receiver RE Module aystal flag alignment - AIRTRONICS 11 Autry Irvine CA 92718714 830-8769 have stock two spare Rxs FM tiny Rx Electrics Sailplanes etc standard-size PCM Most super memory Txs have PWM/PCM capability buy have new mixing tricks available old FM-equipped Sailplane instance PWM other kind FMpulsewidth modulation transmitter doesnt send out bunches numbers Instead correlates stick position width particular pulse train pulses transmits frame updated infonnation RMcM Tx has synthesizer think much easier will use way Just remember change old Rx right time 1991 SRF radios would boon SPORT FLIER often take Channel RC48 system have field discover long lines use Rc48 no body other channels can buy 40-channel CR transceiver $30 181-channel VcR TV Rx $200 automobile radios cassette decks signalseeking synthesized tuners $200 etc much can cost build RC Txs Rxs synthesizers Ill bet would cheaper stocking 101 crystals per manufacturer dealers would love because could concen trate selling product instead channel Kraft offered synthesized Txs 1983 certain rude individuals took delight calling Dial-a-crash systems course fact system turned off before would switch new channel didnt impress Canadians authorized 50 channels soon possible didnt sneer stead snapped up Kraft SRF systems could find Thats rarely see US think US modelers will snap up synthesizers someone offers 1991 Im willing admit possibility some user might forget what channel dialed last Bob ever have LOOK synthesizer control panel could replace tiny hard-to-see Kraft rotary switches LCD display Tx pushbutton step ping through channels like setting LCD watch 1-in LCD put right next antenna would little excuse forget ting channel dialed nuisance Kraft SRF Rx dig airplane switch channels Ive got solution problem can put Tx antenna near Rx antenna let Rx look control signal like signal-seeker car radio Once control has established can put plug air plane lock Rx channel might part charging jack Wouldnt lot simpler sure would main problem Kraft SRF never second generation such improvements would have incorporated Another complaint about Kraft SRF Rx its size Yet fits nicely Baron 28 smallest 25-powered Helicopters Kevin Burner told new JR PCM-10 Rx 10 channels PCM smaller old Cen tury 7 Rx seven channels FM See what mean about later generations have playing What else can sell game Txs de signers have completely overlooked now com paratively simple possibility three-position power switch Done correctly three positions would OFF meaning no RF transmission AUX ON meaning bullt-in monitor has turned look other transmissions channel ON meaning RF being transmitted Rx synthesizer used Tx fre quency generator modiling synthesizer act scanning monitor no problem Tx could help find interference-free channel fly Doesnt make lot sense Wouldnt take care Forgot channel syndrome particularly auto mated transfer control Tx quiet channel would after pressed enabling button would turn airplane Rx pull plug wait find Tx put plug go flying might good idea put retaining screw plug system prices exceed $1000 think time get lot use out complex Tx now Just learning time profi cient use Tx has become big investment hobby time wouldnt surprise see complex systems boxed videotape explains nuances control setup possibil ities Polks Merlin comes audiotape Servo pricing another matter Tom Runge told American company cant make plastic parts servo price foreigners charge complete servo What means lot hand labor goes assem bling servo servos may never cheaper un til design simplified andlor production automated see big opportunity smart designer motor gears key Somebody should looking printed circuit motors stepping motors linear induction mo tors etc Perhaps have noticed new sys tems packaged fewer usual four servos order make competitive price want badly enough its obvious March 1989 107 youve ever fuel tank split leak fuel fuselage know important install tank can trust Du-Bro Products manufactures complete line rugged polypropylene tanks 10 convenient sizes 2 oz 24 oz guaranteed life against splitting leaking money back tank comes complete soft brass tubing hardware Protruding front lip prevents fuel lines being crimped hard landings Single twin vent design gas conversion stopper available use tank gasoline Cat No 400 Visit local Hobby Shop fuel hook up accessories 0 Fuel Tubing Tank Filter Kwik Fill Fuel Value Gas Gb Fuel In-Line Fuel Filter Kwik Fill Fuel Pump 77 can get Rxs flight packs have difficulty its caused distributors dealers perhaps exacerbated lack syn thesizers Ive playing What game essay see anything attracts Xeroxlm column circle parts like send marked-up copy appro priate person named below polite dont need new enemies Ace RIC Tom Runge Ace R/C Inc PO Box 51 1B12 Higginsville MO 64037 Airironics Jack Albrecht Airtronics Inc 11 Autry Irvine CA 92718 Futaba Ron Heib Futaba Corp Amrica 555 West Victoria St Compton CA 90220 Fu taba may have relocated Irvine CA adrest time printed JR Kevin Burner Hobby Dynamics 4105 S Highland Champaign IL 61821 Polks Gil Rose Aristo-Craft/Polks Model Craft Hobbies 500 5th Ave New York NY 10010 World Engines Jim Lanterman World En gines 8960 Rossash Rd Cincinnati OH 45 36 get few thousand letters just ii make some kind impression would impression letter could fully say am interested PCM S Whatever would useless wil additional flight packs reasonable prices Sailpiane/Blakeslee Continued page 42 iight take uth Liper bout have little designer us look kit think Id like try little longer wing maybe different airfoil past just eyeball design ing computer design program can actually see what happens flight performance make changes No need trial error think wonderfuland particular value tlose seriously designing own planet Davids program sells $3500 will soon include latest data Selig Donovan wind tunnel tests Princeton Ad dress 1335 Slayton Drive Maple Glen PA 19002 Next up panel discussion F3B Sailpianes panel Larry Jolly Bob Sealy Rich Burnoski Wayne Fre dette myself began Bob show ing slides F3B Team Selection Finals held Los Angeles September Larry Seth Dawson Rich Spicer made team Rich Burnoski didnt make team talked about likes fly F3B anyway Its ultimate said F3B World Championships Olympics Sailplane flying Just us dont have skills qualify US Olympic team F3B Finals devoted best fliers country However Olympics fun watch high-level F3B com petitionContinued page 143 108 Model Aviation L Can Cap Fittings
Edition: Model Aviation - 1989/03
Page Numbers: 34, 35, 106, 107, 108
GeorgeM Mye D Radio Thchnque ABSTRACT Super transmitters flight packs synthesizers FLIGHT PACKS What manufactur ers up now have engineers concen trating top-of-the-line crystal-controlled trans mitters Tx feature computer memories store settings servo directions mixing throws etc bunch airplanes WHAT GOOD ARE THEY IF YOU CANT BUY FLIGHT PACKS FOR THE OTHER PLANES Editors note flight pack part RC system goes plane RMcM modelers have complained about high cost general unavailability flight packs say although can buy ser vos hattey packs switch harnesses over counter its receivers Rxs hard find gave some money phone companies learn thats true make up flight pack individ ual parts purchased over counter pay complete new sys tem People complain about irrationality ing forced buy extra Tx battery charger flag servo trays servo arms screws eyelets neck strap instruction manuals carton want Rx battery pack switch har ness couple servos have sympa thy complaint reasonable thing to buy complete package less money out pocket discard parts dont want buy food eats corneobs can now see flight pack availability problem basically receiver availability pro blem might wish could convince dealer least stock Rx manufacturer plus some crystals sounds like good idea until discover manufacturers list half-dozen Rxs try discourage sales FM set crystals consumers Practically everything now FM FM/ PCM FM systems including PCMs must re checked direction amount frequency de viation following crystal change Since sumed no consumer set up may exceptions nobody wants product blamed what happens next after simply swap crystals So try limit crys tal availability servicemen have equipment right fact FM SYS TEMS MEASURE FREQUENCY DEVIA TION TO EXTRACT CONTROL INFORMA TION what makes field-swapping FM crystals such bad idea might tempted USE ANY Rx YOU CAN GET make up flight pack Unfortu nately half FM systems market uti lize frequency deviation direction other half opposite mixing brands may help much systema use com patible deviations servo plugs probably wont match Another problem new 1024 PCM codes arent compatible old 512 codes Come think maybe Id better say couple words about what PCM means PCM stands pulse-code modulation transmitter senses positions of its con trol sticks knobs switches encodes formation bunch words made up num bers binary code transmits re ceiver computer receiver detects numbers translates commands servo positions OnIOff switch commands word-to-position correspondence can arbi trary can certainly differ between manufactur ers As general rule isnt necessary align new FM FM/PCM Rx particular Tx anymore because Tx Rx now aligned precise frequency counters signal generators factory service center Take off shelf try Only see ground range problem should need return Tx Rx compatibility tuning Right now people inside expecting see need compatibility retuning Tx Rx after about three years use 34 Model Aviation 70 Froehildi Faui Rd Hldcsvlk NY 11801 Niel Frangeshs Duxbury MA striking lull-scale PiUs S-iT has black/yellow paint job red pinstripes top Unlimited-category acrobatic pilots Northeast way puts plane through its paces makes RC Pattern model look underpowered size prop ship indicates lots horses inside cowl Note aileron-boost aerodynamic spade lower aileron Photographed Red Lion NJ Registration num ber fuselage Nil N reads OK either upright Inverted Oblique view Futabas PCM 1024A transmitter Model FP-T9VAP shows its computer key board hints programming possibilities super transmitter can store control setup info up 6 aircraft Futaba stocks both receivers flight packs use Back flight packs basic problem flight packs SOMEBODY has stock Rx channel line manu facturer order make just sale suming interchangeable crystals avail able 50 channels due 1991 could lot Rxs about 750 consider Airtronics Futaba JR Polks World En gines lines Never mind might want pack different servos Since no dealer will stock 750 Rxs needs access someone will Meet some Ace RIC Inc makes AM Rxs finished form kits dealers offers singleconversion Silver Seven receiver $5395 less connectors dual-conversion Model 91 $9995 Ic plus line servos Rxs can consumer-tuned kits factory-tuned built-up versions Replacement Rx crystals available bands Ace ProLine equipment No FM equipment available manufac turer yet Airrronics Inc stocks type Rx catalog channel its distributors Airtronics used catalog flight packs didnt sell well Distributors didnt want stock multitude packages Its in-house service center ONLY Airtron ics service center writing will handle necessary frequency conversions crystal re placements will sell Ham crystals Hams 27 & 75 MHz crystals distributors will sell 72 MHz Aircraft Only Tx crystals Airtronics will have Ham-band equipment 50 & 53 MHz 1989 JR radios Hobby Dynamics Distributors dis tributes JR radio systems Circus Hobbies Kevin Burner told Circus Hobbies warehouse Las Vegas Hobby Dynam ics warehouse Champaign IL linked common computer system dealer orders stock shipped nearest warehouse time conversation 15 Rxs type 72 MHz chan nels warehouses JR will sell Rx crystals doesnt recom mend move two channels frequency system sold Kevin also told president Hobby Dynamics Mike Cioili has JR ser vice center turning work around 36 hours thought youd like know Futaba Corporation America stocks both Rx flight packs flight packs priced below sum component prices arent very popular distributors and/or deal ers Normally least 100 Rx type available except case newest prod ucts Rxs go systems Eloy Marex told Futaba seils matched sets crystals recommends move two channels frequency sys tem purchased Polks stocks extra ARI-03-2681 FM Rx channel $3495 orders batches 1000 Poiks once offered flight packs werent attractive wholesalers very few made dealers shelves Louls Poik told new Rxs have slim F connector shouldnt problem buy new servos $1295 ARI-03-7410 Molex to-F adapters available $295 use older equlpment Continued page 106 Tooting Own Horns because Robar Ball Liflk Horns have lot tO t about rOtatiflQ kifl~ ble piicFmount realiStIc Thatsthreeole variety xact ushrOdsdwithOutes Contro aies anY ap stur lable bail linkm1 havTheyre aval hter clea scale pearance oU much ij9add UP ner m aPd give d yo- nleS5 areevot control just expensive 3 dozen $400 ea 4 dozen $375 ea 5 dozen $360 ea 6 dozen $355 ea Add $400 shipping per order Please send good black white art reproduction Please specify quantity Trans-Cover colors ink color ordering Limit ink color per order Now fliers over world have neat inexpensive functional way protect R/C transmitters dirt dust rain Custom printed club logo Constructed durable canvas lifelong Velcro closure Available red blue green yellow orange black Colors can mixed size fits Send check money order KD GRAPHICS 3315 13th Avenue Columbus GeorgIa 31904 404/323-2787 9am-Spm EST March 1989 35 yOJ Fp\JOItE $OBB suPP~1E 145-CO VER Cerdfied Airtronics C Gold Label \Super Narinw Band Dual Receivers set 1991 certified independent tests state art FM PCM receivers meet eeed AMA RCMA specifications guidelines RIC operation 191 beyond compact~htweight 1ghfOrnianCe Conver Receivers pivduce dearei efficient signal less susceptible specific types intemiodulation pwblems SpclflcatIou Mitsui FM mid PCM 91d Label Super Nanew Band Dual Conversion fimioers Receiver9296592765 TransmitterWngtiard PCM 4 & 6nguard FM 4 & 6 92785 Module FM 92985 Spectra/Quantum PCM Length2427 Mdth15136 Height08085 Weight2 oz2 oz 2 oi 2 oz AdjacentBetter 694 dBBetter 813 dB Channel85KHz@85KHz Rejection-773 dB @ 85 KHz692 dRo 85 KHz Image671 dB7D8 dB Rejection 3rd QIP59 dBM38 dBM Airtitnics .ii Conversion Receivers advantages superior image rejection impiuved sensitivity nanvw ban maa mum interference rejection and contm performance comes dual con version receiver technology tters isnt gold Aiinics Gold Label Receivers set th@ gold standard 1991 beyond Contact Airtronics prices availability Safety/Preston Continued page 22 small fire thinking extinguished fire later reignited No firefighter worthy badge will complain being called out size type fire CBs mobile phones use today gets easier day contact fire department ambulance service Have safe month see warning la bel product youve used before please take time read Sterling/Baker Continued page 33 shown plans used about 8 oz Plug hole balsa repaint Flying Whenever take Sterling flying field usual question get engines start pro cedure follows Start left out board engine get running smooth near-peak rpm idle engine stop cloth Repeat engine Top off tanks Set throttle full open start engine left right What usually happens engine starts first flip dont bother syn chronize engines may adjust throttle engine does seem smooth have two choices staffing takeoff run First have engines full throffle have someone give plane short running start running start too slow plane will veer sharply left fun games getting track straight steerable tail wheel comes handy have cor responding pilot Sterling says full-size plane famous same veering tendencies although right Second choice start half throt tle steer rudder plane picks up speed feed throttle either case let ground speed build up lift tail let Sterling roll quite ways before giving up-elevator break ground have unfortunate habit palling planes off ground too soon happens Sterling will wallow around will eventually sort itself out fly highly recommend getting lots speed before leaving ground making gen tle climb cruising altitude Once airborne Sterling reasonably fast flies very smoothly extremely realistic majestic air Landings made just like full-size air plane Make wide base leg set up long final approach Pull throffles back enough get steady descent few feet off ground can pull throffles idle plane will make nice wheel landing will roll before tail settles As four-engined airplane best procedure land four en gines running Sterling flies well three engines engine quits keep nose down prudent land soon possible hope enjoy Sterling im pressive aircraft both ground air Radio Technique/Myers Continued page 35 World Engines stocks Rxs its Expert series channels RC18 abovebut rip flight packsfor its dealers Molex connector still used World still maintains its metalcased Tx module intended inter changed field Jim Lanterman told World Engines Expert Rx will certified AMA Guide lines soon Proprietary changes anticipated will differentiate line Polks US-made 5-16 large servo still offered What about synthesizers think its time develop some synthesizers flight pack Rx could satisfy Tx vice versa cant get dealers stock flight packs may cost extra make up flight pack componentsforever Certainly dealers likely stock couple UNIVER SAL Rxs ie synthesized tuning great crystal ones dealer would 106 Model Aviation sGoodasGil Airtivnics \ offers oppor $\o1den tunity meet challenge lowcost RIG system upgrade service converts present Airbnnics AM transmitter receiver 1991 AMA Gold label specifications opemtion Airtmnics major manufachnr offering compre hensive RIG system conversions economical price XAS stand behind compatible line high quality PJC systems accessories unmatched 1991 system upgrade seivice Alrtronlcs 1991 RICsystmm conversions $7495 *XLlCmpionshiplSR AM FM72 MHz Dual Conversion 1991 Receir s $200 ShipIngIHaridlisg $5995 MHZ Dual Conversion 1991 Receiver S2 Sluppln&tandtng $5995 **Wnguard AM FM Dual72 MHz Conversion 1991 Receiver ~oo ShsgMatsg Return RF Module Receiver An additional checkout charge will incurred complete transmitter returned * Return entire Vanguard AM transmitter receiver Prices sub]ect change notice Airtmnics want known best just best known piuvides alternative expen replacement NowthelatestnewAirtiunics 1991 RIG transmitter receiver technology available cus tomers system modulation changes indude new receiver RE Module aystal flag alignment - AIRTRONICS 11 Autry Irvine CA 92718714 830-8769 have stock two spare Rxs FM tiny Rx Electrics Sailplanes etc standard-size PCM Most super memory Txs have PWM/PCM capability buy have new mixing tricks available old FM-equipped Sailplane instance PWM other kind FMpulsewidth modulation transmitter doesnt send out bunches numbers Instead correlates stick position width particular pulse train pulses transmits frame updated infonnation RMcM Tx has synthesizer think much easier will use way Just remember change old Rx right time 1991 SRF radios would boon SPORT FLIER often take Channel RC48 system have field discover long lines use Rc48 no body other channels can buy 40-channel CR transceiver $30 181-channel VcR TV Rx $200 automobile radios cassette decks signalseeking synthesized tuners $200 etc much can cost build RC Txs Rxs synthesizers Ill bet would cheaper stocking 101 crystals per manufacturer dealers would love because could concen trate selling product instead channel Kraft offered synthesized Txs 1983 certain rude individuals took delight calling Dial-a-crash systems course fact system turned off before would switch new channel didnt impress Canadians authorized 50 channels soon possible didnt sneer stead snapped up Kraft SRF systems could find Thats rarely see US think US modelers will snap up synthesizers someone offers 1991 Im willing admit possibility some user might forget what channel dialed last Bob ever have LOOK synthesizer control panel could replace tiny hard-to-see Kraft rotary switches LCD display Tx pushbutton step ping through channels like setting LCD watch 1-in LCD put right next antenna would little excuse forget ting channel dialed nuisance Kraft SRF Rx dig airplane switch channels Ive got solution problem can put Tx antenna near Rx antenna let Rx look control signal like signal-seeker car radio Once control has established can put plug air plane lock Rx channel might part charging jack Wouldnt lot simpler sure would main problem Kraft SRF never second generation such improvements would have incorporated Another complaint about Kraft SRF Rx its size Yet fits nicely Baron 28 smallest 25-powered Helicopters Kevin Burner told new JR PCM-10 Rx 10 channels PCM smaller old Cen tury 7 Rx seven channels FM See what mean about later generations have playing What else can sell game Txs de signers have completely overlooked now com paratively simple possibility three-position power switch Done correctly three positions would OFF meaning no RF transmission AUX ON meaning bullt-in monitor has turned look other transmissions channel ON meaning RF being transmitted Rx synthesizer used Tx fre quency generator modiling synthesizer act scanning monitor no problem Tx could help find interference-free channel fly Doesnt make lot sense Wouldnt take care Forgot channel syndrome particularly auto mated transfer control Tx quiet channel would after pressed enabling button would turn airplane Rx pull plug wait find Tx put plug go flying might good idea put retaining screw plug system prices exceed $1000 think time get lot use out complex Tx now Just learning time profi cient use Tx has become big investment hobby time wouldnt surprise see complex systems boxed videotape explains nuances control setup possibil ities Polks Merlin comes audiotape Servo pricing another matter Tom Runge told American company cant make plastic parts servo price foreigners charge complete servo What means lot hand labor goes assem bling servo servos may never cheaper un til design simplified andlor production automated see big opportunity smart designer motor gears key Somebody should looking printed circuit motors stepping motors linear induction mo tors etc Perhaps have noticed new sys tems packaged fewer usual four servos order make competitive price want badly enough its obvious March 1989 107 youve ever fuel tank split leak fuel fuselage know important install tank can trust Du-Bro Products manufactures complete line rugged polypropylene tanks 10 convenient sizes 2 oz 24 oz guaranteed life against splitting leaking money back tank comes complete soft brass tubing hardware Protruding front lip prevents fuel lines being crimped hard landings Single twin vent design gas conversion stopper available use tank gasoline Cat No 400 Visit local Hobby Shop fuel hook up accessories 0 Fuel Tubing Tank Filter Kwik Fill Fuel Value Gas Gb Fuel In-Line Fuel Filter Kwik Fill Fuel Pump 77 can get Rxs flight packs have difficulty its caused distributors dealers perhaps exacerbated lack syn thesizers Ive playing What game essay see anything attracts Xeroxlm column circle parts like send marked-up copy appro priate person named below polite dont need new enemies Ace RIC Tom Runge Ace R/C Inc PO Box 51 1B12 Higginsville MO 64037 Airironics Jack Albrecht Airtronics Inc 11 Autry Irvine CA 92718 Futaba Ron Heib Futaba Corp Amrica 555 West Victoria St Compton CA 90220 Fu taba may have relocated Irvine CA adrest time printed JR Kevin Burner Hobby Dynamics 4105 S Highland Champaign IL 61821 Polks Gil Rose Aristo-Craft/Polks Model Craft Hobbies 500 5th Ave New York NY 10010 World Engines Jim Lanterman World En gines 8960 Rossash Rd Cincinnati OH 45 36 get few thousand letters just ii make some kind impression would impression letter could fully say am interested PCM S Whatever would useless wil additional flight packs reasonable prices Sailpiane/Blakeslee Continued page 42 iight take uth Liper bout have little designer us look kit think Id like try little longer wing maybe different airfoil past just eyeball design ing computer design program can actually see what happens flight performance make changes No need trial error think wonderfuland particular value tlose seriously designing own planet Davids program sells $3500 will soon include latest data Selig Donovan wind tunnel tests Princeton Ad dress 1335 Slayton Drive Maple Glen PA 19002 Next up panel discussion F3B Sailpianes panel Larry Jolly Bob Sealy Rich Burnoski Wayne Fre dette myself began Bob show ing slides F3B Team Selection Finals held Los Angeles September Larry Seth Dawson Rich Spicer made team Rich Burnoski didnt make team talked about likes fly F3B anyway Its ultimate said F3B World Championships Olympics Sailplane flying Just us dont have skills qualify US Olympic team F3B Finals devoted best fliers country However Olympics fun watch high-level F3B com petitionContinued page 143 108 Model Aviation L Can Cap Fittings
Edition: Model Aviation - 1989/03
Page Numbers: 34, 35, 106, 107, 108
GeorgeM Mye D Radio Thchnque ABSTRACT Super transmitters flight packs synthesizers FLIGHT PACKS What manufactur ers up now have engineers concen trating top-of-the-line crystal-controlled trans mitters Tx feature computer memories store settings servo directions mixing throws etc bunch airplanes WHAT GOOD ARE THEY IF YOU CANT BUY FLIGHT PACKS FOR THE OTHER PLANES Editors note flight pack part RC system goes plane RMcM modelers have complained about high cost general unavailability flight packs say although can buy ser vos hattey packs switch harnesses over counter its receivers Rxs hard find gave some money phone companies learn thats true make up flight pack individ ual parts purchased over counter pay complete new sys tem People complain about irrationality ing forced buy extra Tx battery charger flag servo trays servo arms screws eyelets neck strap instruction manuals carton want Rx battery pack switch har ness couple servos have sympa thy complaint reasonable thing to buy complete package less money out pocket discard parts dont want buy food eats corneobs can now see flight pack availability problem basically receiver availability pro blem might wish could convince dealer least stock Rx manufacturer plus some crystals sounds like good idea until discover manufacturers list half-dozen Rxs try discourage sales FM set crystals consumers Practically everything now FM FM/ PCM FM systems including PCMs must re checked direction amount frequency de viation following crystal change Since sumed no consumer set up may exceptions nobody wants product blamed what happens next after simply swap crystals So try limit crys tal availability servicemen have equipment right fact FM SYS TEMS MEASURE FREQUENCY DEVIA TION TO EXTRACT CONTROL INFORMA TION what makes field-swapping FM crystals such bad idea might tempted USE ANY Rx YOU CAN GET make up flight pack Unfortu nately half FM systems market uti lize frequency deviation direction other half opposite mixing brands may help much systema use com patible deviations servo plugs probably wont match Another problem new 1024 PCM codes arent compatible old 512 codes Come think maybe Id better say couple words about what PCM means PCM stands pulse-code modulation transmitter senses positions of its con trol sticks knobs switches encodes formation bunch words made up num bers binary code transmits re ceiver computer receiver detects numbers translates commands servo positions OnIOff switch commands word-to-position correspondence can arbi trary can certainly differ between manufactur ers As general rule isnt necessary align new FM FM/PCM Rx particular Tx anymore because Tx Rx now aligned precise frequency counters signal generators factory service center Take off shelf try Only see ground range problem should need return Tx Rx compatibility tuning Right now people inside expecting see need compatibility retuning Tx Rx after about three years use 34 Model Aviation 70 Froehildi Faui Rd Hldcsvlk NY 11801 Niel Frangeshs Duxbury MA striking lull-scale PiUs S-iT has black/yellow paint job red pinstripes top Unlimited-category acrobatic pilots Northeast way puts plane through its paces makes RC Pattern model look underpowered size prop ship indicates lots horses inside cowl Note aileron-boost aerodynamic spade lower aileron Photographed Red Lion NJ Registration num ber fuselage Nil N reads OK either upright Inverted Oblique view Futabas PCM 1024A transmitter Model FP-T9VAP shows its computer key board hints programming possibilities super transmitter can store control setup info up 6 aircraft Futaba stocks both receivers flight packs use Back flight packs basic problem flight packs SOMEBODY has stock Rx channel line manu facturer order make just sale suming interchangeable crystals avail able 50 channels due 1991 could lot Rxs about 750 consider Airtronics Futaba JR Polks World En gines lines Never mind might want pack different servos Since no dealer will stock 750 Rxs needs access someone will Meet some Ace RIC Inc makes AM Rxs finished form kits dealers offers singleconversion Silver Seven receiver $5395 less connectors dual-conversion Model 91 $9995 Ic plus line servos Rxs can consumer-tuned kits factory-tuned built-up versions Replacement Rx crystals available bands Ace ProLine equipment No FM equipment available manufac turer yet Airrronics Inc stocks type Rx catalog channel its distributors Airtronics used catalog flight packs didnt sell well Distributors didnt want stock multitude packages Its in-house service center ONLY Airtron ics service center writing will handle necessary frequency conversions crystal re placements will sell Ham crystals Hams 27 & 75 MHz crystals distributors will sell 72 MHz Aircraft Only Tx crystals Airtronics will have Ham-band equipment 50 & 53 MHz 1989 JR radios Hobby Dynamics Distributors dis tributes JR radio systems Circus Hobbies Kevin Burner told Circus Hobbies warehouse Las Vegas Hobby Dynam ics warehouse Champaign IL linked common computer system dealer orders stock shipped nearest warehouse time conversation 15 Rxs type 72 MHz chan nels warehouses JR will sell Rx crystals doesnt recom mend move two channels frequency system sold Kevin also told president Hobby Dynamics Mike Cioili has JR ser vice center turning work around 36 hours thought youd like know Futaba Corporation America stocks both Rx flight packs flight packs priced below sum component prices arent very popular distributors and/or deal ers Normally least 100 Rx type available except case newest prod ucts Rxs go systems Eloy Marex told Futaba seils matched sets crystals recommends move two channels frequency sys tem purchased Polks stocks extra ARI-03-2681 FM Rx channel $3495 orders batches 1000 Poiks once offered flight packs werent attractive wholesalers very few made dealers shelves Louls Poik told new Rxs have slim F connector shouldnt problem buy new servos $1295 ARI-03-7410 Molex to-F adapters available $295 use older equlpment Continued page 106 Tooting Own Horns because Robar Ball Liflk Horns have lot tO t about rOtatiflQ kifl~ ble piicFmount realiStIc Thatsthreeole variety xact ushrOdsdwithOutes Contro aies anY ap stur lable bail linkm1 havTheyre aval hter clea scale pearance oU much ij9add UP ner m aPd give d yo- nleS5 areevot control just expensive 3 dozen $400 ea 4 dozen $375 ea 5 dozen $360 ea 6 dozen $355 ea Add $400 shipping per order Please send good black white art reproduction Please specify quantity Trans-Cover colors ink color ordering Limit ink color per order Now fliers over world have neat inexpensive functional way protect R/C transmitters dirt dust rain Custom printed club logo Constructed durable canvas lifelong Velcro closure Available red blue green yellow orange black Colors can mixed size fits Send check money order KD GRAPHICS 3315 13th Avenue Columbus GeorgIa 31904 404/323-2787 9am-Spm EST March 1989 35 yOJ Fp\JOItE $OBB suPP~1E 145-CO VER Cerdfied Airtronics C Gold Label \Super Narinw Band Dual Receivers set 1991 certified independent tests state art FM PCM receivers meet eeed AMA RCMA specifications guidelines RIC operation 191 beyond compact~htweight 1ghfOrnianCe Conver Receivers pivduce dearei efficient signal less susceptible specific types intemiodulation pwblems SpclflcatIou Mitsui FM mid PCM 91d Label Super Nanew Band Dual Conversion fimioers Receiver9296592765 TransmitterWngtiard PCM 4 & 6nguard FM 4 & 6 92785 Module FM 92985 Spectra/Quantum PCM Length2427 Mdth15136 Height08085 Weight2 oz2 oz 2 oi 2 oz AdjacentBetter 694 dBBetter 813 dB Channel85KHz@85KHz Rejection-773 dB @ 85 KHz692 dRo 85 KHz Image671 dB7D8 dB Rejection 3rd QIP59 dBM38 dBM Airtitnics .ii Conversion Receivers advantages superior image rejection impiuved sensitivity nanvw ban maa mum interference rejection and contm performance comes dual con version receiver technology tters isnt gold Aiinics Gold Label Receivers set th@ gold standard 1991 beyond Contact Airtronics prices availability Safety/Preston Continued page 22 small fire thinking extinguished fire later reignited No firefighter worthy badge will complain being called out size type fire CBs mobile phones use today gets easier day contact fire department ambulance service Have safe month see warning la bel product youve used before please take time read Sterling/Baker Continued page 33 shown plans used about 8 oz Plug hole balsa repaint Flying Whenever take Sterling flying field usual question get engines start pro cedure follows Start left out board engine get running smooth near-peak rpm idle engine stop cloth Repeat engine Top off tanks Set throttle full open start engine left right What usually happens engine starts first flip dont bother syn chronize engines may adjust throttle engine does seem smooth have two choices staffing takeoff run First have engines full throffle have someone give plane short running start running start too slow plane will veer sharply left fun games getting track straight steerable tail wheel comes handy have cor responding pilot Sterling says full-size plane famous same veering tendencies although right Second choice start half throt tle steer rudder plane picks up speed feed throttle either case let ground speed build up lift tail let Sterling roll quite ways before giving up-elevator break ground have unfortunate habit palling planes off ground too soon happens Sterling will wallow around will eventually sort itself out fly highly recommend getting lots speed before leaving ground making gen tle climb cruising altitude Once airborne Sterling reasonably fast flies very smoothly extremely realistic majestic air Landings made just like full-size air plane Make wide base leg set up long final approach Pull throffles back enough get steady descent few feet off ground can pull throffles idle plane will make nice wheel landing will roll before tail settles As four-engined airplane best procedure land four en gines running Sterling flies well three engines engine quits keep nose down prudent land soon possible hope enjoy Sterling im pressive aircraft both ground air Radio Technique/Myers Continued page 35 World Engines stocks Rxs its Expert series channels RC18 abovebut rip flight packsfor its dealers Molex connector still used World still maintains its metalcased Tx module intended inter changed field Jim Lanterman told World Engines Expert Rx will certified AMA Guide lines soon Proprietary changes anticipated will differentiate line Polks US-made 5-16 large servo still offered What about synthesizers think its time develop some synthesizers flight pack Rx could satisfy Tx vice versa cant get dealers stock flight packs may cost extra make up flight pack componentsforever Certainly dealers likely stock couple UNIVER SAL Rxs ie synthesized tuning great crystal ones dealer would 106 Model Aviation sGoodasGil Airtivnics \ offers oppor $\o1den tunity meet challenge lowcost RIG system upgrade service converts present Airbnnics AM transmitter receiver 1991 AMA Gold label specifications opemtion Airtmnics major manufachnr offering compre hensive RIG system conversions economical price XAS stand behind compatible line high quality PJC systems accessories unmatched 1991 system upgrade seivice Alrtronlcs 1991 RICsystmm conversions $7495 *XLlCmpionshiplSR AM FM72 MHz Dual Conversion 1991 Receir s $200 ShipIngIHaridlisg $5995 MHZ Dual Conversion 1991 Receiver S2 Sluppln&tandtng $5995 **Wnguard AM FM Dual72 MHz Conversion 1991 Receiver ~oo ShsgMatsg Return RF Module Receiver An additional checkout charge will incurred complete transmitter returned * Return entire Vanguard AM transmitter receiver Prices sub]ect change notice Airtmnics want known best just best known piuvides alternative expen replacement NowthelatestnewAirtiunics 1991 RIG transmitter receiver technology available cus tomers system modulation changes indude new receiver RE Module aystal flag alignment - AIRTRONICS 11 Autry Irvine CA 92718714 830-8769 have stock two spare Rxs FM tiny Rx Electrics Sailplanes etc standard-size PCM Most super memory Txs have PWM/PCM capability buy have new mixing tricks available old FM-equipped Sailplane instance PWM other kind FMpulsewidth modulation transmitter doesnt send out bunches numbers Instead correlates stick position width particular pulse train pulses transmits frame updated infonnation RMcM Tx has synthesizer think much easier will use way Just remember change old Rx right time 1991 SRF radios would boon SPORT FLIER often take Channel RC48 system have field discover long lines use Rc48 no body other channels can buy 40-channel CR transceiver $30 181-channel VcR TV Rx $200 automobile radios cassette decks signalseeking synthesized tuners $200 etc much can cost build RC Txs Rxs synthesizers Ill bet would cheaper stocking 101 crystals per manufacturer dealers would love because could concen trate selling product instead channel Kraft offered synthesized Txs 1983 certain rude individuals took delight calling Dial-a-crash systems course fact system turned off before would switch new channel didnt impress Canadians authorized 50 channels soon possible didnt sneer stead snapped up Kraft SRF systems could find Thats rarely see US think US modelers will snap up synthesizers someone offers 1991 Im willing admit possibility some user might forget what channel dialed last Bob ever have LOOK synthesizer control panel could replace tiny hard-to-see Kraft rotary switches LCD display Tx pushbutton step ping through channels like setting LCD watch 1-in LCD put right next antenna would little excuse forget ting channel dialed nuisance Kraft SRF Rx dig airplane switch channels Ive got solution problem can put Tx antenna near Rx antenna let Rx look control signal like signal-seeker car radio Once control has established can put plug air plane lock Rx channel might part charging jack Wouldnt lot simpler sure would main problem Kraft SRF never second generation such improvements would have incorporated Another complaint about Kraft SRF Rx its size Yet fits nicely Baron 28 smallest 25-powered Helicopters Kevin Burner told new JR PCM-10 Rx 10 channels PCM smaller old Cen tury 7 Rx seven channels FM See what mean about later generations have playing What else can sell game Txs de signers have completely overlooked now com paratively simple possibility three-position power switch Done correctly three positions would OFF meaning no RF transmission AUX ON meaning bullt-in monitor has turned look other transmissions channel ON meaning RF being transmitted Rx synthesizer used Tx fre quency generator modiling synthesizer act scanning monitor no problem Tx could help find interference-free channel fly Doesnt make lot sense Wouldnt take care Forgot channel syndrome particularly auto mated transfer control Tx quiet channel would after pressed enabling button would turn airplane Rx pull plug wait find Tx put plug go flying might good idea put retaining screw plug system prices exceed $1000 think time get lot use out complex Tx now Just learning time profi cient use Tx has become big investment hobby time wouldnt surprise see complex systems boxed videotape explains nuances control setup possibil ities Polks Merlin comes audiotape Servo pricing another matter Tom Runge told American company cant make plastic parts servo price foreigners charge complete servo What means lot hand labor goes assem bling servo servos may never cheaper un til design simplified andlor production automated see big opportunity smart designer motor gears key Somebody should looking printed circuit motors stepping motors linear induction mo tors etc Perhaps have noticed new sys tems packaged fewer usual four servos order make competitive price want badly enough its obvious March 1989 107 youve ever fuel tank split leak fuel fuselage know important install tank can trust Du-Bro Products manufactures complete line rugged polypropylene tanks 10 convenient sizes 2 oz 24 oz guaranteed life against splitting leaking money back tank comes complete soft brass tubing hardware Protruding front lip prevents fuel lines being crimped hard landings Single twin vent design gas conversion stopper available use tank gasoline Cat No 400 Visit local Hobby Shop fuel hook up accessories 0 Fuel Tubing Tank Filter Kwik Fill Fuel Value Gas Gb Fuel In-Line Fuel Filter Kwik Fill Fuel Pump 77 can get Rxs flight packs have difficulty its caused distributors dealers perhaps exacerbated lack syn thesizers Ive playing What game essay see anything attracts Xeroxlm column circle parts like send marked-up copy appro priate person named below polite dont need new enemies Ace RIC Tom Runge Ace R/C Inc PO Box 51 1B12 Higginsville MO 64037 Airironics Jack Albrecht Airtronics Inc 11 Autry Irvine CA 92718 Futaba Ron Heib Futaba Corp Amrica 555 West Victoria St Compton CA 90220 Fu taba may have relocated Irvine CA adrest time printed JR Kevin Burner Hobby Dynamics 4105 S Highland Champaign IL 61821 Polks Gil Rose Aristo-Craft/Polks Model Craft Hobbies 500 5th Ave New York NY 10010 World Engines Jim Lanterman World En gines 8960 Rossash Rd Cincinnati OH 45 36 get few thousand letters just ii make some kind impression would impression letter could fully say am interested PCM S Whatever would useless wil additional flight packs reasonable prices Sailpiane/Blakeslee Continued page 42 iight take uth Liper bout have little designer us look kit think Id like try little longer wing maybe different airfoil past just eyeball design ing computer design program can actually see what happens flight performance make changes No need trial error think wonderfuland particular value tlose seriously designing own planet Davids program sells $3500 will soon include latest data Selig Donovan wind tunnel tests Princeton Ad dress 1335 Slayton Drive Maple Glen PA 19002 Next up panel discussion F3B Sailpianes panel Larry Jolly Bob Sealy Rich Burnoski Wayne Fre dette myself began Bob show ing slides F3B Team Selection Finals held Los Angeles September Larry Seth Dawson Rich Spicer made team Rich Burnoski didnt make team talked about likes fly F3B anyway Its ultimate said F3B World Championships Olympics Sailplane flying Just us dont have skills qualify US Olympic team F3B Finals devoted best fliers country However Olympics fun watch high-level F3B com petitionContinued page 143 108 Model Aviation L Can Cap Fittings
Edition: Model Aviation - 1989/03
Page Numbers: 34, 35, 106, 107, 108
GeorgeM Mye D Radio Thchnque ABSTRACT Super transmitters flight packs synthesizers FLIGHT PACKS What manufactur ers up now have engineers concen trating top-of-the-line crystal-controlled trans mitters Tx feature computer memories store settings servo directions mixing throws etc bunch airplanes WHAT GOOD ARE THEY IF YOU CANT BUY FLIGHT PACKS FOR THE OTHER PLANES Editors note flight pack part RC system goes plane RMcM modelers have complained about high cost general unavailability flight packs say although can buy ser vos hattey packs switch harnesses over counter its receivers Rxs hard find gave some money phone companies learn thats true make up flight pack individ ual parts purchased over counter pay complete new sys tem People complain about irrationality ing forced buy extra Tx battery charger flag servo trays servo arms screws eyelets neck strap instruction manuals carton want Rx battery pack switch har ness couple servos have sympa thy complaint reasonable thing to buy complete package less money out pocket discard parts dont want buy food eats corneobs can now see flight pack availability problem basically receiver availability pro blem might wish could convince dealer least stock Rx manufacturer plus some crystals sounds like good idea until discover manufacturers list half-dozen Rxs try discourage sales FM set crystals consumers Practically everything now FM FM/ PCM FM systems including PCMs must re checked direction amount frequency de viation following crystal change Since sumed no consumer set up may exceptions nobody wants product blamed what happens next after simply swap crystals So try limit crys tal availability servicemen have equipment right fact FM SYS TEMS MEASURE FREQUENCY DEVIA TION TO EXTRACT CONTROL INFORMA TION what makes field-swapping FM crystals such bad idea might tempted USE ANY Rx YOU CAN GET make up flight pack Unfortu nately half FM systems market uti lize frequency deviation direction other half opposite mixing brands may help much systema use com patible deviations servo plugs probably wont match Another problem new 1024 PCM codes arent compatible old 512 codes Come think maybe Id better say couple words about what PCM means PCM stands pulse-code modulation transmitter senses positions of its con trol sticks knobs switches encodes formation bunch words made up num bers binary code transmits re ceiver computer receiver detects numbers translates commands servo positions OnIOff switch commands word-to-position correspondence can arbi trary can certainly differ between manufactur ers As general rule isnt necessary align new FM FM/PCM Rx particular Tx anymore because Tx Rx now aligned precise frequency counters signal generators factory service center Take off shelf try Only see ground range problem should need return Tx Rx compatibility tuning Right now people inside expecting see need compatibility retuning Tx Rx after about three years use 34 Model Aviation 70 Froehildi Faui Rd Hldcsvlk NY 11801 Niel Frangeshs Duxbury MA striking lull-scale PiUs S-iT has black/yellow paint job red pinstripes top Unlimited-category acrobatic pilots Northeast way puts plane through its paces makes RC Pattern model look underpowered size prop ship indicates lots horses inside cowl Note aileron-boost aerodynamic spade lower aileron Photographed Red Lion NJ Registration num ber fuselage Nil N reads OK either upright Inverted Oblique view Futabas PCM 1024A transmitter Model FP-T9VAP shows its computer key board hints programming possibilities super transmitter can store control setup info up 6 aircraft Futaba stocks both receivers flight packs use Back flight packs basic problem flight packs SOMEBODY has stock Rx channel line manu facturer order make just sale suming interchangeable crystals avail able 50 channels due 1991 could lot Rxs about 750 consider Airtronics Futaba JR Polks World En gines lines Never mind might want pack different servos Since no dealer will stock 750 Rxs needs access someone will Meet some Ace RIC Inc makes AM Rxs finished form kits dealers offers singleconversion Silver Seven receiver $5395 less connectors dual-conversion Model 91 $9995 Ic plus line servos Rxs can consumer-tuned kits factory-tuned built-up versions Replacement Rx crystals available bands Ace ProLine equipment No FM equipment available manufac turer yet Airrronics Inc stocks type Rx catalog channel its distributors Airtronics used catalog flight packs didnt sell well Distributors didnt want stock multitude packages Its in-house service center ONLY Airtron ics service center writing will handle necessary frequency conversions crystal re placements will sell Ham crystals Hams 27 & 75 MHz crystals distributors will sell 72 MHz Aircraft Only Tx crystals Airtronics will have Ham-band equipment 50 & 53 MHz 1989 JR radios Hobby Dynamics Distributors dis tributes JR radio systems Circus Hobbies Kevin Burner told Circus Hobbies warehouse Las Vegas Hobby Dynam ics warehouse Champaign IL linked common computer system dealer orders stock shipped nearest warehouse time conversation 15 Rxs type 72 MHz chan nels warehouses JR will sell Rx crystals doesnt recom mend move two channels frequency system sold Kevin also told president Hobby Dynamics Mike Cioili has JR ser vice center turning work around 36 hours thought youd like know Futaba Corporation America stocks both Rx flight packs flight packs priced below sum component prices arent very popular distributors and/or deal ers Normally least 100 Rx type available except case newest prod ucts Rxs go systems Eloy Marex told Futaba seils matched sets crystals recommends move two channels frequency sys tem purchased Polks stocks extra ARI-03-2681 FM Rx channel $3495 orders batches 1000 Poiks once offered flight packs werent attractive wholesalers very few made dealers shelves Louls Poik told new Rxs have slim F connector shouldnt problem buy new servos $1295 ARI-03-7410 Molex to-F adapters available $295 use older equlpment Continued page 106 Tooting Own Horns because Robar Ball Liflk Horns have lot tO t about rOtatiflQ kifl~ ble piicFmount realiStIc Thatsthreeole variety xact ushrOdsdwithOutes Contro aies anY ap stur lable bail linkm1 havTheyre aval hter clea scale pearance oU much ij9add UP ner m aPd give d yo- nleS5 areevot control just expensive 3 dozen $400 ea 4 dozen $375 ea 5 dozen $360 ea 6 dozen $355 ea Add $400 shipping per order Please send good black white art reproduction Please specify quantity Trans-Cover colors ink color ordering Limit ink color per order Now fliers over world have neat inexpensive functional way protect R/C transmitters dirt dust rain Custom printed club logo Constructed durable canvas lifelong Velcro closure Available red blue green yellow orange black Colors can mixed size fits Send check money order KD GRAPHICS 3315 13th Avenue Columbus GeorgIa 31904 404/323-2787 9am-Spm EST March 1989 35 yOJ Fp\JOItE $OBB suPP~1E 145-CO VER Cerdfied Airtronics C Gold Label \Super Narinw Band Dual Receivers set 1991 certified independent tests state art FM PCM receivers meet eeed AMA RCMA specifications guidelines RIC operation 191 beyond compact~htweight 1ghfOrnianCe Conver Receivers pivduce dearei efficient signal less susceptible specific types intemiodulation pwblems SpclflcatIou Mitsui FM mid PCM 91d Label Super Nanew Band Dual Conversion fimioers Receiver9296592765 TransmitterWngtiard PCM 4 & 6nguard FM 4 & 6 92785 Module FM 92985 Spectra/Quantum PCM Length2427 Mdth15136 Height08085 Weight2 oz2 oz 2 oi 2 oz AdjacentBetter 694 dBBetter 813 dB Channel85KHz@85KHz Rejection-773 dB @ 85 KHz692 dRo 85 KHz Image671 dB7D8 dB Rejection 3rd QIP59 dBM38 dBM Airtitnics .ii Conversion Receivers advantages superior image rejection impiuved sensitivity nanvw ban maa mum interference rejection and contm performance comes dual con version receiver technology tters isnt gold Aiinics Gold Label Receivers set th@ gold standard 1991 beyond Contact Airtronics prices availability Safety/Preston Continued page 22 small fire thinking extinguished fire later reignited No firefighter worthy badge will complain being called out size type fire CBs mobile phones use today gets easier day contact fire department ambulance service Have safe month see warning la bel product youve used before please take time read Sterling/Baker Continued page 33 shown plans used about 8 oz Plug hole balsa repaint Flying Whenever take Sterling flying field usual question get engines start pro cedure follows Start left out board engine get running smooth near-peak rpm idle engine stop cloth Repeat engine Top off tanks Set throttle full open start engine left right What usually happens engine starts first flip dont bother syn chronize engines may adjust throttle engine does seem smooth have two choices staffing takeoff run First have engines full throffle have someone give plane short running start running start too slow plane will veer sharply left fun games getting track straight steerable tail wheel comes handy have cor responding pilot Sterling says full-size plane famous same veering tendencies although right Second choice start half throt tle steer rudder plane picks up speed feed throttle either case let ground speed build up lift tail let Sterling roll quite ways before giving up-elevator break ground have unfortunate habit palling planes off ground too soon happens Sterling will wallow around will eventually sort itself out fly highly recommend getting lots speed before leaving ground making gen tle climb cruising altitude Once airborne Sterling reasonably fast flies very smoothly extremely realistic majestic air Landings made just like full-size air plane Make wide base leg set up long final approach Pull throffles back enough get steady descent few feet off ground can pull throffles idle plane will make nice wheel landing will roll before tail settles As four-engined airplane best procedure land four en gines running Sterling flies well three engines engine quits keep nose down prudent land soon possible hope enjoy Sterling im pressive aircraft both ground air Radio Technique/Myers Continued page 35 World Engines stocks Rxs its Expert series channels RC18 abovebut rip flight packsfor its dealers Molex connector still used World still maintains its metalcased Tx module intended inter changed field Jim Lanterman told World Engines Expert Rx will certified AMA Guide lines soon Proprietary changes anticipated will differentiate line Polks US-made 5-16 large servo still offered What about synthesizers think its time develop some synthesizers flight pack Rx could satisfy Tx vice versa cant get dealers stock flight packs may cost extra make up flight pack componentsforever Certainly dealers likely stock couple UNIVER SAL Rxs ie synthesized tuning great crystal ones dealer would 106 Model Aviation sGoodasGil Airtivnics \ offers oppor $\o1den tunity meet challenge lowcost RIG system upgrade service converts present Airbnnics AM transmitter receiver 1991 AMA Gold label specifications opemtion Airtmnics major manufachnr offering compre hensive RIG system conversions economical price XAS stand behind compatible line high quality PJC systems accessories unmatched 1991 system upgrade seivice Alrtronlcs 1991 RICsystmm conversions $7495 *XLlCmpionshiplSR AM FM72 MHz Dual Conversion 1991 Receir s $200 ShipIngIHaridlisg $5995 MHZ Dual Conversion 1991 Receiver S2 Sluppln&tandtng $5995 **Wnguard AM FM Dual72 MHz Conversion 1991 Receiver ~oo ShsgMatsg Return RF Module Receiver An additional checkout charge will incurred complete transmitter returned * Return entire Vanguard AM transmitter receiver Prices sub]ect change notice Airtmnics want known best just best known piuvides alternative expen replacement NowthelatestnewAirtiunics 1991 RIG transmitter receiver technology available cus tomers system modulation changes indude new receiver RE Module aystal flag alignment - AIRTRONICS 11 Autry Irvine CA 92718714 830-8769 have stock two spare Rxs FM tiny Rx Electrics Sailplanes etc standard-size PCM Most super memory Txs have PWM/PCM capability buy have new mixing tricks available old FM-equipped Sailplane instance PWM other kind FMpulsewidth modulation transmitter doesnt send out bunches numbers Instead correlates stick position width particular pulse train pulses transmits frame updated infonnation RMcM Tx has synthesizer think much easier will use way Just remember change old Rx right time 1991 SRF radios would boon SPORT FLIER often take Channel RC48 system have field discover long lines use Rc48 no body other channels can buy 40-channel CR transceiver $30 181-channel VcR TV Rx $200 automobile radios cassette decks signalseeking synthesized tuners $200 etc much can cost build RC Txs Rxs synthesizers Ill bet would cheaper stocking 101 crystals per manufacturer dealers would love because could concen trate selling product instead channel Kraft offered synthesized Txs 1983 certain rude individuals took delight calling Dial-a-crash systems course fact system turned off before would switch new channel didnt impress Canadians authorized 50 channels soon possible didnt sneer stead snapped up Kraft SRF systems could find Thats rarely see US think US modelers will snap up synthesizers someone offers 1991 Im willing admit possibility some user might forget what channel dialed last Bob ever have LOOK synthesizer control panel could replace tiny hard-to-see Kraft rotary switches LCD display Tx pushbutton step ping through channels like setting LCD watch 1-in LCD put right next antenna would little excuse forget ting channel dialed nuisance Kraft SRF Rx dig airplane switch channels Ive got solution problem can put Tx antenna near Rx antenna let Rx look control signal like signal-seeker car radio Once control has established can put plug air plane lock Rx channel might part charging jack Wouldnt lot simpler sure would main problem Kraft SRF never second generation such improvements would have incorporated Another complaint about Kraft SRF Rx its size Yet fits nicely Baron 28 smallest 25-powered Helicopters Kevin Burner told new JR PCM-10 Rx 10 channels PCM smaller old Cen tury 7 Rx seven channels FM See what mean about later generations have playing What else can sell game Txs de signers have completely overlooked now com paratively simple possibility three-position power switch Done correctly three positions would OFF meaning no RF transmission AUX ON meaning bullt-in monitor has turned look other transmissions channel ON meaning RF being transmitted Rx synthesizer used Tx fre quency generator modiling synthesizer act scanning monitor no problem Tx could help find interference-free channel fly Doesnt make lot sense Wouldnt take care Forgot channel syndrome particularly auto mated transfer control Tx quiet channel would after pressed enabling button would turn airplane Rx pull plug wait find Tx put plug go flying might good idea put retaining screw plug system prices exceed $1000 think time get lot use out complex Tx now Just learning time profi cient use Tx has become big investment hobby time wouldnt surprise see complex systems boxed videotape explains nuances control setup possibil ities Polks Merlin comes audiotape Servo pricing another matter Tom Runge told American company cant make plastic parts servo price foreigners charge complete servo What means lot hand labor goes assem bling servo servos may never cheaper un til design simplified andlor production automated see big opportunity smart designer motor gears key Somebody should looking printed circuit motors stepping motors linear induction mo tors etc Perhaps have noticed new sys tems packaged fewer usual four servos order make competitive price want badly enough its obvious March 1989 107 youve ever fuel tank split leak fuel fuselage know important install tank can trust Du-Bro Products manufactures complete line rugged polypropylene tanks 10 convenient sizes 2 oz 24 oz guaranteed life against splitting leaking money back tank comes complete soft brass tubing hardware Protruding front lip prevents fuel lines being crimped hard landings Single twin vent design gas conversion stopper available use tank gasoline Cat No 400 Visit local Hobby Shop fuel hook up accessories 0 Fuel Tubing Tank Filter Kwik Fill Fuel Value Gas Gb Fuel In-Line Fuel Filter Kwik Fill Fuel Pump 77 can get Rxs flight packs have difficulty its caused distributors dealers perhaps exacerbated lack syn thesizers Ive playing What game essay see anything attracts Xeroxlm column circle parts like send marked-up copy appro priate person named below polite dont need new enemies Ace RIC Tom Runge Ace R/C Inc PO Box 51 1B12 Higginsville MO 64037 Airironics Jack Albrecht Airtronics Inc 11 Autry Irvine CA 92718 Futaba Ron Heib Futaba Corp Amrica 555 West Victoria St Compton CA 90220 Fu taba may have relocated Irvine CA adrest time printed JR Kevin Burner Hobby Dynamics 4105 S Highland Champaign IL 61821 Polks Gil Rose Aristo-Craft/Polks Model Craft Hobbies 500 5th Ave New York NY 10010 World Engines Jim Lanterman World En gines 8960 Rossash Rd Cincinnati OH 45 36 get few thousand letters just ii make some kind impression would impression letter could fully say am interested PCM S Whatever would useless wil additional flight packs reasonable prices Sailpiane/Blakeslee Continued page 42 iight take uth Liper bout have little designer us look kit think Id like try little longer wing maybe different airfoil past just eyeball design ing computer design program can actually see what happens flight performance make changes No need trial error think wonderfuland particular value tlose seriously designing own planet Davids program sells $3500 will soon include latest data Selig Donovan wind tunnel tests Princeton Ad dress 1335 Slayton Drive Maple Glen PA 19002 Next up panel discussion F3B Sailpianes panel Larry Jolly Bob Sealy Rich Burnoski Wayne Fre dette myself began Bob show ing slides F3B Team Selection Finals held Los Angeles September Larry Seth Dawson Rich Spicer made team Rich Burnoski didnt make team talked about likes fly F3B anyway Its ultimate said F3B World Championships Olympics Sailplane flying Just us dont have skills qualify US Olympic team F3B Finals devoted best fliers country However Olympics fun watch high-level F3B com petitionContinued page 143 108 Model Aviation L Can Cap Fittings