Scale Masters

SPOOK HILLS sounds like forbidding setting Edgar Allen Poe story scene world-class RC Scale contest such case site perhaps best purely model flying field writer has seen built beautiful desert surroundings Mesa AZ near Phoenix Arizona Model Association association host 1985 Scale Masters held October 1820 Running meet One-Eighth Air Force groups long experience handling high-attendance fly-ins qualified take Scale Masters stride runway some 60 x 600 ft suf ficient sluggish takeoff brand new flawless surface fliers good news bad news land surrounding desert terrain espe cially punishing modelsrocky ground hard concrete cactus bushes mesquite trees proving themselves beautiful deadly models Against backdrop 66 worlds best RC Scale modelers competed Since first year Scale Masters open foreign fliers much advance notice participation other countries light teams Canada faraway Australia New Zealand made trip auguringwellforthe future Scale Masters true worldclass RC Scale event Without doubt contest proved accurate reflec tion present state art category modeling analysis see tables comments shows what type model radio gear engines etc favored top fliers rules per se dictate choices contest always three-day affair Friday set aside static judg ing Saturday Sunday four rounds E - arnom comes omisiering aiong iow TEYDY i om pucuo uscona ADOYS Lull 51 PIMUW wuw UWUflM nis SBD Above Right Ramon Torres tookthird place unusual Beech T-34CTurbo-Menor three certaInI February 1986 81 Young Shailesh Patel Eureka CA runs up ST 3000 Spitfire Mk XIV Low humidity gave Shaliesh others difficulty properly adjusting engine flying static judging progressed Friday runway available make test flights field acclimatization did Indeed sky fairly heav ily filled RC Scale airplanes day As well known standards build ing Standoff Scale rather misnomer days keep getting-higher year Contrary periodic grumbling about hears times fliers appear thrive seeking outdo past efforts Perhaps strangely some emphasis quality has served increase popularity event Judging such circumstances becomes more difficult responsejudg ing tightened considerably 1985 event everyone ended up scores three five points lower norm anywhere else several builders beat magic 90 top score going Dave Platt new FW 190 A-8 prototype Tom Cook Jeff Foley Chuck Scale Masters Results First Place Scale Masters ChampIon Kent Walters Second Place Tom CookTop StatIc Score Dave Platt Third Place Ramon TorresPilots ChoIce Award Dave Platt Best Single Flight Kent WaltersLast-Place T-Shirt Greg Namey Equipment Data Contestant Apojan Baker Barbee Bender Buckley Carper Casey Cavanaugh Cleis Collier Cook Cordes Couch Crooks Deweese Dorman Elston Erwin Fingler Fiorenze Foley Forrester Fey Fuller Hanft Hansen Hatch Izzo Jensen Job Jones Kitchin Kleinhaus Kretz Lawson Loin Aircraft M-1 0 Bristol P47 Jungmeister p47 Cub FW 190 MiG-3 Spitfire Piper Tomahawk P-S 10 F-4 Cub P-Ba TBM 109 Zero P-S 10 Super Hi 109 F-4 109 Gee Bee Spitfire Waco Taperwing Fokker EV A-4 Cessna Ag-Truck Laser Cub CAP 21 P-Ba CAP 21 Starch Spitfire Spire FW 190 Engine ST 2000 ST 3000 Tartan Quadra 0S 90/45 Enya 60 05 60 OS 90 0S 108 ST 2500 Rossi 65 Rossi 81 ST 2500 Moki ST 2500 OS 108 Quadra OS 108 K&B 75 0S 108 Bully ST 60 SD 37 0S 61 Tartan Twin Webra 90 0S 108 Rossi 81 OS 120 ST 75 Kraft 61 ST 2500 ST 3000 Radio Kraft JR Kraft Kraft Futaba Futaba Futaba Kraft Futaba JR JR Futaba Futaba Futaba Futaba Kraft Tower Kraft Kraft JR JR Kraft Futaba JR RetractsSpan 84 Airways80 65 Byron80 93 Romair65 Romair72 Plaft74 93 81 56 Platt JMP 0/0 Platt Platt Platt Platt JMP Platt Romair Kraft Pro Line Kraft JR Futaba Futaba Royal JR Kraft Romair Plafi Platt Lb wt Source 0/0 21Scaleflite 15Platt 24Byron 0/0 10Pica 11MANPlans 170/0 150/0 22Platt 24JMP 0/0 11Sterner 8219Holman Plans 7917Platt 7918Platt 7715O/D 9223OSS 7915Plafi 5617JMP 7915Platt 9625OlD 66110/0 0/0 0/0 Jet Hangar 82130/0 9617PBM 8414Sig 8012Hanson 6311O/D 7214Great Planes 9213Sven 6510Pica 8819Platt 8020O/D Fuller Ramon Torres Dr Ken Law son Australia especially impressive entries Saturday dawned warm windless condition held remainder weekend Flying got underway after short delay schedule caused fre quency revisions through previous day much discussion speculation re garding reigning Champ Tom Cooks new fan units Phantom Rumor rife pits dramatic gains performance would witnessed Toms first flight Dave Platts new 1 /5-scale FW 1 90-A-B took trophy top static points Featuring scale guns fillets steps hatches interior details etc model still weighed just 19 lb 82 Model Aviation Contestant Aircraft Lopez Loviti McCaIIie McDonald Madison Man ion Mann Mast Micko Namey Nelson 0Meara Patel Platt Poffenbarger Raymond Rheaume Sawatzky Tacie Tanner Thomas Thompson Tiano Torres Trenary Velosky Voglund Walters Watts Weemes P-47 Jungmeister P-510 Vickers Jockey 109 F- 16 FW 190 C-130 P-47 P-51B Waco Cabin p-47 Spitfire FW 190 Corsair T-28 P-47 T-34 SM 81 CAP 21 Spitfire Stampe Spitfire T-34C MiG-iS Cougar P-40 SBD-3 Heath Bullet PT- 19 Equipment Data Engine Radio Retracts Bully 0S Gemini ST 2500 Webra 90 ST 2000 Rossi 81 ST 3000 K&B 21 0S 61 ST 3000 OS 90 ST 3000 ST 3000 ST 2500 Kawasaki Webra 90 0S 61 K&B 21 Enya 120 ST 2500 ST 2500 ST 3000 Moki Rossi 81 0S 65 0S 90 Webra 90 Saito 270 Enya 120 Futaba Ace Futaba Kraft Kraft Kraft Airtronics Futaba JRPlatt Airtronics Futaba Futaba JR JR Kraft Kraft Airtronics JR JR Futaba Futaba Futaba Futaba Futaba Kraft JR Airtronics Airways Platt Platt Lb Span Wt Source Airways8023Scaleflite 6513Platt 7517Holman Plans 78120/0 Platt7915Platt Byron Plati80OlD 102140/0 608Top Flite 8117Platt 75140/0 8022Scaleflite 8824Platt 8019Platt 93280/0 Geizendanner6813Great Planes 80Scaleflite Byron6511Byron 85130/0 729Great Planes Platt7919Plati 8216Precedent Platt7924Platt 0/08023RT Byron 4711Jet Hangar 649Holman Plans 6915Holman Plans 111300/0 14Pilot Notes Tables Radios Futaba 21 Kraft 17 JR 14 Air tronics 4 Others 11 Engines Supertigre 20 05 16 Webra 6 Rossi 6 Others 21 Engine Types two-cycle glow 60 fourcycle glow 7 gasoline 4 eagerly anticipated said show man Missouri disappointed F-4 24 lb some 7 lb heavier Nats winner Bob Fiorenzis version itself no slouch simply out-accel lerated outclimbed outfiew ducted-fan ship seen date First-round flights seldom true gauge modelers ability few high scores posted Among exceptions Cliff Tacie Ramon Torres Dennis Crooks course Kent Walters Kents consistency model everyone flight makes gets over 90 Fuller Izzo Tom Cook also made high firstround scores part February 1986 83 Sources Kits Platt 14 Scaletlite 4 ron 4 others 19 Plans Holman 4 MAN 1 Own DesIgns 20 Retracts Platt 16 Romair 4 Airways 3 others 7 Average wingspan entries 785 Average weight entries 164 lb fliers third fourth-round scores becaine ones counted Saturday evening Scale Masters time banquet always light-hearted affair After few short speeches rest after-dinner enter tainment turned over always Frank Tiano Franks good-humored barbs contestants organizers spon sors Pacer Technology anyone else rated dig ribs have permanent highlight Another feature emphasizes Scale Masters unique easygoing approach serious competition has annual award Being Last Sucks T-shirt disappointing years winner Greg Nainey got prize default rather genuinely bad performance Greg very respectable static score P-5 lB Little Duckfoot prevented making flights radio problems Namey however squashed remark awards cere mony better come last among best world have come widely quoted press Dennis Crooks Avenger cruises its fi nal landing approach Its wing-folding op tion very impressive Like others Dennis chose use ST 2500 engine beautiful Waco Taperwing master scratch buliderChuck Fuller four gasoline-powered ships seen year Left HarryApoian himself something old-timer fiewthis Bristol M-1 C monoplane -scale scratch designed/built powered ST 2000 Right Bert Barker Scaleflight man showed great rendition what own P-47 kit supposed look like TV beginning Sundays flying Walters such commanding posi tion few could catch him Tom Ccok FrankTiano unable bring new Skyraider heenteredthisbackupSpitflreXll might have did needing scant 1 1 points could manage scores being tabulated field opened some demonstration flying demo will long remem bered Ccok Fiorenzi flew F-4s together Blue Angels style routine complete head-on close passes bomb burst climbs simultaneous formation loops Without doubt Scale Mas ters premier RC Scale com petitions Awaiting static judging lineup heavy metal gets critical examination Judges viewing 15 ft away spectators got right top major item interest especially modelers wanting take part future Scale Masters What does take tables show models equipment used can guide toward competitive entry few surprises emerge average wingspans weights high might imagined weight limit 40 lb Anotheroff beat subject Cliff Tacies Savola Marchetti S M 81 flew beautifully very quietiyonthreeK&B21s Questforunique model subjects hits new heights year Only entry reached 30 lb Further 66 planes 13 went over 20 lb figures suggest FM rulesmakers Scale community general may have grown far apart some have believed FM formula revised say 25-lb weight limit 20 cu two-cycle engines allowed par ticipation FAI contests particularly US team selection process might Continued page 145 John Dorman ax USAF jock loves 518 P-Si B Old Crow wasveryappeai ing P-51s continue popular least four entered 1985 RC Scale Masters 84 Model Aviation Scale Masters/Oliver Continued page 84 increase dramatically contestants used gaso line-fueled spark-ignition four-cycle en gines popular engine still strangest Normally located uppermost arc meter face grossly non-linear equal movements pointer mark off equal resis tance values using look care fully avoid easy errors different ways construct ohmmeter function pop ular technique connect battery selectable resistors meter move ment series test leads done inside multimeter Often internal battery consists several flashlight cells perhaps ninevolt transistor battery sure keep freshI replace annually Several selectable-range resistors allow measurement very wide range resis tance valuesjust voltmeter current meter ranges Part ohmmeters internal resistor set adjustable resistor potentio meter pot allow zeroing pointer deflection prior use will ap pear knob thumbwheel multimeter housing use desired resistance range chosen test two-cycle glow type usually around 15 cu m civilian/military makeup en try shows strengthening civilian sub jects small degree Some 24% ships flown 1985 civilian types WW II fighters continue dominant group modeler appeal leads shorted togethertouch red lead black lead will cause pointer deflect toward zero ohms usually opposite end scale other functions zero Chances pointer will either quite reach zero will overshoot Thats zero control comes inmove until pointer rests zero un short test leads pointer will return fully other waytoward infinity ohms usually symbolized symbol looks lot like horizontal 8 Thus shorted leads no ohms made meter pointer read zero Open leads represent unbeliev ably large resistance open circuit practical resistance value con nected test leads pointer will wind up somewhere between two limitsprovided course suit able range selected first place Now some incidentals regarding ohmmeter use range zero knob will likely need different setting rangedont get tricked forgetting ernal battery Continued page 147 DIA 63 4 728 3 3* 4 56 83 3&3/4 4 5 6 8 8*4 5 66* 7 94 5 66* 7 7* 104 5 66W 6* 78W 10BEW 114 6 7 7* 7* 7&3/4 8 116EW 11*6 7 124W 5 SW 6 135 6 145 6 155 6 166 78 FOUR-CYCLE TAILORED HELICAL PITCH 126 6* 7 7* 8 13677*8 14677*8 1567 16678 PRICE $149 $179 $189 $1 99 $199 $209 $219 $229 $239 $239 $279 $359 $459 $659 $949 $299 $389 $489 $689 $989 PYLON RACING 7SN SiN 8&3/46* 6&3/4 7 7* 7&3/4 97 7* 7&3/4 W Wide bZade EW Exira wide $279 $289 $289 N Narrow ALL PRICES ARE POSTPAID ON ORDERS OVER $10 ORDERS SHIPPED FIRST CLASS MAIL WITHIN 24 HRS CALIFORNIA RESIDENTS ADD 6% TAX ADO 8100 IF YOU WANT INSURED MAIL ORDER BY MAIL OR PHONE 714 830-5162 SORRY NO COD VISA & MASTERCARD WELCOME DEALER INQUIRIES INVITED SPECIALISTS IN CUSTOM COX TEE DEE & REED ENGINES COMPLETE INVENTORY OF CUSTOM & STOCK PARTS HARD-TO-FIND ITEMS SUCH AS CUSTOM NEEDLE VALVES RACING WHEELS QWCK FILLS SOLID CONTROL LINES ETC SOCIETY OF ANTIQUE MODELERS MA TERIALS CARBON FIBER COILS CONDENSERS SILK TRANSISTOR IGNITION SYSTEMS TIMERS ETC REPLICA OR WICK ENGINES February 1986 145 OUR INVENTORY AVEHA~ OVER 8000 PROPS! SPECIAL PRO SERIES PITCH Dr Ken Lawson brought Plaft-kit Spitfire way Australia Quaiity aii Aussie entries equai spirit can bet theyli back Jeff Foleys beautifullyfinished 109G Plane isa terrific flier powered byan OS 105 multimeters ohmmeter function will cause small voltage applied component under test thus small current will flow through fact ohmmeter worksit applies voltage reads resulting current scale marked indicate ohmic value being measured small test signal normally no consequence power system use very sig nificant used within solid state cir cuitsbut thats beyond scope months column Finally careful connect ohmmeter active circuit such battery running motorthe ohmmeter measuring unpowered circuits components oniy Failure heed ad visory may result instrument damage Now some examples uses Remember optically-coupled speed control discussion can fact verify true separation receiver motor circuits aid ohmmeter Select highest resistance range available zero instrument both receiver motor power system switches OFF mean OFF connect ohmmeter lead elec trical part receiver system battery terminal contact unused servo plug exposed connection charge plug will connect other ohmmeter lead electrical part motor circuit brush connection motor battery terminal will What should see meter isno move ment Infinity ohms complete isola tion receiver motor systems would case nonoptically-isolated controls resis tance very much less infinity would indicate meter depending exact connections made other extreme try measuring motor resistance Select lowest resistance range zero instrument Disconnect motor system connector connect test leads motor terminals What should have very low ohms reading depend ing motor Turn armature slow ly Youre likely find new low ohms reading new armature position demonstrates very low resistance motorand variability low value depending brush contact varia tion armature position prac tical purposes such low readings much value simply because small variable unreliable other hand very poor no brush contactor dead commutator segmentit will show up quite noticeably rather large swing ohmmeter youre set up may well try thing Select low volt age range multimeter spin motor armature fingers pointer should move up down zero volts Reverse meter leads brushes pointer motion will reverse what before spin ning motor generates voltage Yup typical DC permanent-magnet motor also generator just use backward turning instead having turn something windmilling prop does turns out characteristic basic essential way motors work first place thats another long story resistance examples above limit examplesextremes high low resistance fact wide resistance ranges available multimeters little value Electrics often open short continuity information needed in-between ranges quite useful however receivers transmitters other elec tronic assemblies resistances can cover open short limits values between simple household resistance can use get further ac quainted ohmmeter light bulb Unscrew bulb try measuring resistance touching meter leads base contact points Depending lamp rating youll measure values few ohms 100 watt size few hundred ohms nite lite size Finally fun ohmmeter demonstra tion Set ohmmeter highest range hold test leads fingers making contact leads should get large resistance reading Squeeze leadsthe resistance reading should decrease Moisten hands get lower reading See body conductorit has measurable resistance its open circuit Ever wonder about girl friends resistance Thats issue friends Heres wishing happy quiet winter landingsremember Electric just great cold weather otherwise turns glow fuel gooey sticky smelly mess Please forward questions com ments SASE please Bob Kopski 25 West End Dr Lansdale PA 19446 RC Giant Scale/Beckman Continued page 57 tion-type engines witness ing melding advantages both Giant Scale four-cycle engines first look Saito 27 cu four-cycle twin action Its far cry inexpensive converted chainsaw engines few years ago does look nice sound beautiful perform superbly Before weekend over got another introduction four-cycle multicylinder engines told last month about Forest Edwards five-cylinder beau ty After watching two engines per form Im really getting four-cycle bug things go well hope Big Banger articles next few months try concentrate four-cycle engines keep getting vision Sparrowhawk Edwards engine nose should really give scale performance Youve heard babble times about real value flying chance talk people make new friends renew old friendships weekend particularly valuable last category got talk old friend hadnt seen 30 years Back early Fifties privileged work fly learn Continued page 148 February 1986 147

SPOOK HILLS sounds like forbidding setting Edgar Allen Poe story scene world-class RC Scale contest such case site perhaps best purely model flying field writer has seen built beautiful desert surroundings Mesa AZ near Phoenix Arizona Model Association association host 1985 Scale Masters held October 1820 Running meet One-Eighth Air Force groups long experience handling high-attendance fly-ins qualified take Scale Masters stride runway some 60 x 600 ft suf ficient sluggish takeoff brand new flawless surface fliers good news bad news land surrounding desert terrain espe cially punishing modelsrocky ground hard concrete cactus bushes mesquite trees proving themselves beautiful deadly models Against backdrop 66 worlds best RC Scale modelers competed Since first year Scale Masters open foreign fliers much advance notice participation other countries light teams Canada faraway Australia New Zealand made trip auguringwellforthe future Scale Masters true worldclass RC Scale event Without doubt contest proved accurate reflec tion present state art category modeling analysis see tables comments shows what type model radio gear engines etc favored top fliers rules per se dictate choices contest always three-day affair Friday set aside static judg ing Saturday Sunday four rounds E - arnom comes omisiering aiong iow TEYDY i om pucuo uscona ADOYS Lull 51 PIMUW wuw UWUflM nis SBD Above Right Ramon Torres tookthird place unusual Beech T-34CTurbo-Menor three certaInI February 1986 81 Young Shailesh Patel Eureka CA runs up ST 3000 Spitfire Mk XIV Low humidity gave Shaliesh others difficulty properly adjusting engine flying static judging progressed Friday runway available make test flights field acclimatization did Indeed sky fairly heav ily filled RC Scale airplanes day As well known standards build ing Standoff Scale rather misnomer days keep getting-higher year Contrary periodic grumbling about hears times fliers appear thrive seeking outdo past efforts Perhaps strangely some emphasis quality has served increase popularity event Judging such circumstances becomes more difficult responsejudg ing tightened considerably 1985 event everyone ended up scores three five points lower norm anywhere else several builders beat magic 90 top score going Dave Platt new FW 190 A-8 prototype Tom Cook Jeff Foley Chuck Scale Masters Results First Place Scale Masters ChampIon Kent Walters Second Place Tom CookTop StatIc Score Dave Platt Third Place Ramon TorresPilots ChoIce Award Dave Platt Best Single Flight Kent WaltersLast-Place T-Shirt Greg Namey Equipment Data Contestant Apojan Baker Barbee Bender Buckley Carper Casey Cavanaugh Cleis Collier Cook Cordes Couch Crooks Deweese Dorman Elston Erwin Fingler Fiorenze Foley Forrester Fey Fuller Hanft Hansen Hatch Izzo Jensen Job Jones Kitchin Kleinhaus Kretz Lawson Loin Aircraft M-1 0 Bristol P47 Jungmeister p47 Cub FW 190 MiG-3 Spitfire Piper Tomahawk P-S 10 F-4 Cub P-Ba TBM 109 Zero P-S 10 Super Hi 109 F-4 109 Gee Bee Spitfire Waco Taperwing Fokker EV A-4 Cessna Ag-Truck Laser Cub CAP 21 P-Ba CAP 21 Starch Spitfire Spire FW 190 Engine ST 2000 ST 3000 Tartan Quadra 0S 90/45 Enya 60 05 60 OS 90 0S 108 ST 2500 Rossi 65 Rossi 81 ST 2500 Moki ST 2500 OS 108 Quadra OS 108 K&B 75 0S 108 Bully ST 60 SD 37 0S 61 Tartan Twin Webra 90 0S 108 Rossi 81 OS 120 ST 75 Kraft 61 ST 2500 ST 3000 Radio Kraft JR Kraft Kraft Futaba Futaba Futaba Kraft Futaba JR JR Futaba Futaba Futaba Futaba Kraft Tower Kraft Kraft JR JR Kraft Futaba JR RetractsSpan 84 Airways80 65 Byron80 93 Romair65 Romair72 Plaft74 93 81 56 Platt JMP 0/0 Platt Platt Platt Platt JMP Platt Romair Kraft Pro Line Kraft JR Futaba Futaba Royal JR Kraft Romair Plafi Platt Lb wt Source 0/0 21Scaleflite 15Platt 24Byron 0/0 10Pica 11MANPlans 170/0 150/0 22Platt 24JMP 0/0 11Sterner 8219Holman Plans 7917Platt 7918Platt 7715O/D 9223OSS 7915Plafi 5617JMP 7915Platt 9625OlD 66110/0 0/0 0/0 Jet Hangar 82130/0 9617PBM 8414Sig 8012Hanson 6311O/D 7214Great Planes 9213Sven 6510Pica 8819Platt 8020O/D Fuller Ramon Torres Dr Ken Law son Australia especially impressive entries Saturday dawned warm windless condition held remainder weekend Flying got underway after short delay schedule caused fre quency revisions through previous day much discussion speculation re garding reigning Champ Tom Cooks new fan units Phantom Rumor rife pits dramatic gains performance would witnessed Toms first flight Dave Platts new 1 /5-scale FW 1 90-A-B took trophy top static points Featuring scale guns fillets steps hatches interior details etc model still weighed just 19 lb 82 Model Aviation Contestant Aircraft Lopez Loviti McCaIIie McDonald Madison Man ion Mann Mast Micko Namey Nelson 0Meara Patel Platt Poffenbarger Raymond Rheaume Sawatzky Tacie Tanner Thomas Thompson Tiano Torres Trenary Velosky Voglund Walters Watts Weemes P-47 Jungmeister P-510 Vickers Jockey 109 F- 16 FW 190 C-130 P-47 P-51B Waco Cabin p-47 Spitfire FW 190 Corsair T-28 P-47 T-34 SM 81 CAP 21 Spitfire Stampe Spitfire T-34C MiG-iS Cougar P-40 SBD-3 Heath Bullet PT- 19 Equipment Data Engine Radio Retracts Bully 0S Gemini ST 2500 Webra 90 ST 2000 Rossi 81 ST 3000 K&B 21 0S 61 ST 3000 OS 90 ST 3000 ST 3000 ST 2500 Kawasaki Webra 90 0S 61 K&B 21 Enya 120 ST 2500 ST 2500 ST 3000 Moki Rossi 81 0S 65 0S 90 Webra 90 Saito 270 Enya 120 Futaba Ace Futaba Kraft Kraft Kraft Airtronics Futaba JRPlatt Airtronics Futaba Futaba JR JR Kraft Kraft Airtronics JR JR Futaba Futaba Futaba Futaba Futaba Kraft JR Airtronics Airways Platt Platt Lb Span Wt Source Airways8023Scaleflite 6513Platt 7517Holman Plans 78120/0 Platt7915Platt Byron Plati80OlD 102140/0 608Top Flite 8117Platt 75140/0 8022Scaleflite 8824Platt 8019Platt 93280/0 Geizendanner6813Great Planes 80Scaleflite Byron6511Byron 85130/0 729Great Planes Platt7919Plati 8216Precedent Platt7924Platt 0/08023RT Byron 4711Jet Hangar 649Holman Plans 6915Holman Plans 111300/0 14Pilot Notes Tables Radios Futaba 21 Kraft 17 JR 14 Air tronics 4 Others 11 Engines Supertigre 20 05 16 Webra 6 Rossi 6 Others 21 Engine Types two-cycle glow 60 fourcycle glow 7 gasoline 4 eagerly anticipated said show man Missouri disappointed F-4 24 lb some 7 lb heavier Nats winner Bob Fiorenzis version itself no slouch simply out-accel lerated outclimbed outfiew ducted-fan ship seen date First-round flights seldom true gauge modelers ability few high scores posted Among exceptions Cliff Tacie Ramon Torres Dennis Crooks course Kent Walters Kents consistency model everyone flight makes gets over 90 Fuller Izzo Tom Cook also made high firstround scores part February 1986 83 Sources Kits Platt 14 Scaletlite 4 ron 4 others 19 Plans Holman 4 MAN 1 Own DesIgns 20 Retracts Platt 16 Romair 4 Airways 3 others 7 Average wingspan entries 785 Average weight entries 164 lb fliers third fourth-round scores becaine ones counted Saturday evening Scale Masters time banquet always light-hearted affair After few short speeches rest after-dinner enter tainment turned over always Frank Tiano Franks good-humored barbs contestants organizers spon sors Pacer Technology anyone else rated dig ribs have permanent highlight Another feature emphasizes Scale Masters unique easygoing approach serious competition has annual award Being Last Sucks T-shirt disappointing years winner Greg Nainey got prize default rather genuinely bad performance Greg very respectable static score P-5 lB Little Duckfoot prevented making flights radio problems Namey however squashed remark awards cere mony better come last among best world have come widely quoted press Dennis Crooks Avenger cruises its fi nal landing approach Its wing-folding op tion very impressive Like others Dennis chose use ST 2500 engine beautiful Waco Taperwing master scratch buliderChuck Fuller four gasoline-powered ships seen year Left HarryApoian himself something old-timer fiewthis Bristol M-1 C monoplane -scale scratch designed/built powered ST 2000 Right Bert Barker Scaleflight man showed great rendition what own P-47 kit supposed look like TV beginning Sundays flying Walters such commanding posi tion few could catch him Tom Ccok FrankTiano unable bring new Skyraider heenteredthisbackupSpitflreXll might have did needing scant 1 1 points could manage scores being tabulated field opened some demonstration flying demo will long remem bered Ccok Fiorenzi flew F-4s together Blue Angels style routine complete head-on close passes bomb burst climbs simultaneous formation loops Without doubt Scale Mas ters premier RC Scale com petitions Awaiting static judging lineup heavy metal gets critical examination Judges viewing 15 ft away spectators got right top major item interest especially modelers wanting take part future Scale Masters What does take tables show models equipment used can guide toward competitive entry few surprises emerge average wingspans weights high might imagined weight limit 40 lb Anotheroff beat subject Cliff Tacies Savola Marchetti S M 81 flew beautifully very quietiyonthreeK&B21s Questforunique model subjects hits new heights year Only entry reached 30 lb Further 66 planes 13 went over 20 lb figures suggest FM rulesmakers Scale community general may have grown far apart some have believed FM formula revised say 25-lb weight limit 20 cu two-cycle engines allowed par ticipation FAI contests particularly US team selection process might Continued page 145 John Dorman ax USAF jock loves 518 P-Si B Old Crow wasveryappeai ing P-51s continue popular least four entered 1985 RC Scale Masters 84 Model Aviation Scale Masters/Oliver Continued page 84 increase dramatically contestants used gaso line-fueled spark-ignition four-cycle en gines popular engine still strangest Normally located uppermost arc meter face grossly non-linear equal movements pointer mark off equal resis tance values using look care fully avoid easy errors different ways construct ohmmeter function pop ular technique connect battery selectable resistors meter move ment series test leads done inside multimeter Often internal battery consists several flashlight cells perhaps ninevolt transistor battery sure keep freshI replace annually Several selectable-range resistors allow measurement very wide range resis tance valuesjust voltmeter current meter ranges Part ohmmeters internal resistor set adjustable resistor potentio meter pot allow zeroing pointer deflection prior use will ap pear knob thumbwheel multimeter housing use desired resistance range chosen test two-cycle glow type usually around 15 cu m civilian/military makeup en try shows strengthening civilian sub jects small degree Some 24% ships flown 1985 civilian types WW II fighters continue dominant group modeler appeal leads shorted togethertouch red lead black lead will cause pointer deflect toward zero ohms usually opposite end scale other functions zero Chances pointer will either quite reach zero will overshoot Thats zero control comes inmove until pointer rests zero un short test leads pointer will return fully other waytoward infinity ohms usually symbolized symbol looks lot like horizontal 8 Thus shorted leads no ohms made meter pointer read zero Open leads represent unbeliev ably large resistance open circuit practical resistance value con nected test leads pointer will wind up somewhere between two limitsprovided course suit able range selected first place Now some incidentals regarding ohmmeter use range zero knob will likely need different setting rangedont get tricked forgetting ernal battery Continued page 147 DIA 63 4 728 3 3* 4 56 83 3&3/4 4 5 6 8 8*4 5 66* 7 94 5 66* 7 7* 104 5 66W 6* 78W 10BEW 114 6 7 7* 7* 7&3/4 8 116EW 11*6 7 124W 5 SW 6 135 6 145 6 155 6 166 78 FOUR-CYCLE TAILORED HELICAL PITCH 126 6* 7 7* 8 13677*8 14677*8 1567 16678 PRICE $149 $179 $189 $1 99 $199 $209 $219 $229 $239 $239 $279 $359 $459 $659 $949 $299 $389 $489 $689 $989 PYLON RACING 7SN SiN 8&3/46* 6&3/4 7 7* 7&3/4 97 7* 7&3/4 W Wide bZade EW Exira wide $279 $289 $289 N Narrow ALL PRICES ARE POSTPAID ON ORDERS OVER $10 ORDERS SHIPPED FIRST CLASS MAIL WITHIN 24 HRS CALIFORNIA RESIDENTS ADD 6% TAX ADO 8100 IF YOU WANT INSURED MAIL ORDER BY MAIL OR PHONE 714 830-5162 SORRY NO COD VISA & MASTERCARD WELCOME DEALER INQUIRIES INVITED SPECIALISTS IN CUSTOM COX TEE DEE & REED ENGINES COMPLETE INVENTORY OF CUSTOM & STOCK PARTS HARD-TO-FIND ITEMS SUCH AS CUSTOM NEEDLE VALVES RACING WHEELS QWCK FILLS SOLID CONTROL LINES ETC SOCIETY OF ANTIQUE MODELERS MA TERIALS CARBON FIBER COILS CONDENSERS SILK TRANSISTOR IGNITION SYSTEMS TIMERS ETC REPLICA OR WICK ENGINES February 1986 145 OUR INVENTORY AVEHA~ OVER 8000 PROPS! SPECIAL PRO SERIES PITCH Dr Ken Lawson brought Plaft-kit Spitfire way Australia Quaiity aii Aussie entries equai spirit can bet theyli back Jeff Foleys beautifullyfinished 109G Plane isa terrific flier powered byan OS 105 multimeters ohmmeter function will cause small voltage applied component under test thus small current will flow through fact ohmmeter worksit applies voltage reads resulting current scale marked indicate ohmic value being measured small test signal normally no consequence power system use very sig nificant used within solid state cir cuitsbut thats beyond scope months column Finally careful connect ohmmeter active circuit such battery running motorthe ohmmeter measuring unpowered circuits components oniy Failure heed ad visory may result instrument damage Now some examples uses Remember optically-coupled speed control discussion can fact verify true separation receiver motor circuits aid ohmmeter Select highest resistance range available zero instrument both receiver motor power system switches OFF mean OFF connect ohmmeter lead elec trical part receiver system battery terminal contact unused servo plug exposed connection charge plug will connect other ohmmeter lead electrical part motor circuit brush connection motor battery terminal will What should see meter isno move ment Infinity ohms complete isola tion receiver motor systems would case nonoptically-isolated controls resis tance very much less infinity would indicate meter depending exact connections made other extreme try measuring motor resistance Select lowest resistance range zero instrument Disconnect motor system connector connect test leads motor terminals What should have very low ohms reading depend ing motor Turn armature slow ly Youre likely find new low ohms reading new armature position demonstrates very low resistance motorand variability low value depending brush contact varia tion armature position prac tical purposes such low readings much value simply because small variable unreliable other hand very poor no brush contactor dead commutator segmentit will show up quite noticeably rather large swing ohmmeter youre set up may well try thing Select low volt age range multimeter spin motor armature fingers pointer should move up down zero volts Reverse meter leads brushes pointer motion will reverse what before spin ning motor generates voltage Yup typical DC permanent-magnet motor also generator just use backward turning instead having turn something windmilling prop does turns out characteristic basic essential way motors work first place thats another long story resistance examples above limit examplesextremes high low resistance fact wide resistance ranges available multimeters little value Electrics often open short continuity information needed in-between ranges quite useful however receivers transmitters other elec tronic assemblies resistances can cover open short limits values between simple household resistance can use get further ac quainted ohmmeter light bulb Unscrew bulb try measuring resistance touching meter leads base contact points Depending lamp rating youll measure values few ohms 100 watt size few hundred ohms nite lite size Finally fun ohmmeter demonstra tion Set ohmmeter highest range hold test leads fingers making contact leads should get large resistance reading Squeeze leadsthe resistance reading should decrease Moisten hands get lower reading See body conductorit has measurable resistance its open circuit Ever wonder about girl friends resistance Thats issue friends Heres wishing happy quiet winter landingsremember Electric just great cold weather otherwise turns glow fuel gooey sticky smelly mess Please forward questions com ments SASE please Bob Kopski 25 West End Dr Lansdale PA 19446 RC Giant Scale/Beckman Continued page 57 tion-type engines witness ing melding advantages both Giant Scale four-cycle engines first look Saito 27 cu four-cycle twin action Its far cry inexpensive converted chainsaw engines few years ago does look nice sound beautiful perform superbly Before weekend over got another introduction four-cycle multicylinder engines told last month about Forest Edwards five-cylinder beau ty After watching two engines per form Im really getting four-cycle bug things go well hope Big Banger articles next few months try concentrate four-cycle engines keep getting vision Sparrowhawk Edwards engine nose should really give scale performance Youve heard babble times about real value flying chance talk people make new friends renew old friendships weekend particularly valuable last category got talk old friend hadnt seen 30 years Back early Fifties privileged work fly learn Continued page 148 February 1986 147