SCALE SCENE Bill Liscomb more-or-less Scale Slope correspondent Southern Califor nia has gone manufacturing end things hope photos convey quality Bills retractsIm very impressed quarter-scale Sailpianes beautifully made aircraft-grade materials wheel pictures three inches di ameter unit can accommodate up 3 /2 inches available two sizes planes Standard-size units have three-inch-long mounting brackets planes up 10 lb Heavy-Duty jobs have six-inch mounts ships over 10 lb Standard size weighs 5 oz wheel Scale builders will course have operating retract doors wheel coming down will push open doors Bill recommends light elastic bands closing retracts can easily oper ated Pattern-type servo retract servo isnt necessary mechanism locks both Up Down positions no landing loads transmitted servo Prices $45 Standard unit $50 H-D plus ibout $3 postage directly Bill Wilshire Model Center Los Angeles CA also selling Bill knows theres huge market quarter-scale retracts growing number Scale Sailplane builders will certainly appreciate having high-quality unit like put finishing touch pride joy cost quite reasonable take close look calculate much time trou ble would involved trying make self Contact Bill 7034 Fern Place Carlsbad CA 92008 later letter Bill says cant wait till Memorial Day Scale Fun Fly Soaring Social Richland See last months column details BB Im already planning Gliders take Quarter-scale terest rise down Last Sunday seven big Gliders Torrey Pines cliff Enclosed photos Angelo Oronos SG-38 Krick kit model museum qualitynote functional seat harness pilot wears custom-made flight suit sports gold bracelet right wrist took Angelo two years complete Does look little tense photo Roke Scale kits August column some photos beautiful Roke Scale Sail plane kits rough idea what cost recently talking phone Tony Ar noux importer big beauties asked him kits hand exactly what prices should explain Tonys real job importing German auto parts bringing small number Roke kits just labor love Anyway Tony said 47-meter 15 ft 4 SB 10 41-meter 13 ft 4 ASW 19T Both $545 plus truck freight boxes about eight feet long cant go UPS Both ships look absolutely gorgeous catalog photos Im sure perform well look complete info contact Tony Arnoux 1744 NW 82 Ave Miami FL 33126 nice Roke catalog also includes Scale accessor ics like spoilers wing joiners retracts decals seats can ordered $4 letter Canadian friend following letter sent Jack Nunn RR 1 Midhurst Ontario LOL lXO Canada driving forces Central Ontario Glider Group COGG interested comments Sep 48 Model Aviation Radio Conot Soaring Byron Blakeslee photo Hake catalog its ineur gorgeoua ASW 19T Model spans 41 meters Kit German import available $545 plus freight Tony Arnoux Miami FL Bill Llscomb about iauncn Angelo Oro nos SG-38 its maiden flight Torrey Pines CA Slope site flight perfect Closeup pilot Angelo Oronos SG 38 Plane German primary trainer used 1938 model museum quality Heres 158-in-span Super version Bernard Henwoods Stiletto design young member Englands Sheffield club holds Airfoil Eppler 193 wing area 95 sq ft Design has won contests UK Theres info column tember 1987 issue Model Aviation regarding Percentage Slot contests popular UK COOG have used format last two years major contest season very well accepted fact recent survey 68% members preferred Man-on-Man usual Thermal Duration contest has disadvantagesparticularly frequency prob lem five Out 22 same fre quency happened us year good CD can usually work things out big advan tage course virtually eliminate luck factoras winner max Out lone thermal day club thinking holding Man on-Man contest care get touch Id glad forward copy rules some ideas running successful con test another matter Canadian Soaring So ciety formed just last year kindly mentioned column will have over 200 members end year About 60% Canadian rest US other countries Again anyone wish ing have information CSS may drop line Finally am also very keen interna tional event Duration know theres lot enthusiastic support other Canadian Sailplane fliers COGO would volunteer act hosts initial event enough worldwide enthusiasm can attained Thanks letter Jack offer M-o-M rules new RC frequen cies opening up now Ive got feeling more clubs will going format enjoy kinds competition auto racing boat racing football track fieldyou name M-o-M has feeling real competition mean its like being actual race versus racing against clock Continued page 144 DISTRIBUTED BY ZJfflU83Z5111 7550 San Gaboel Road cadeo CA 93422 496-1717 *7 Giant ScaletieSheets *80 Size38Sheets *40 SIzet38Sheets *Propeller Decals inWT 6 Sheets -3 sizes Ca *Kill Markings12Sheets *Nomenclature Markings 3 Sizes -12 Sheets inBlack White copy * Letters Numbers 1234 413/16 10 Colors * Stsrs 10 Colors 11 Sizes plus Sheet OR Assorted Sizes Major Decals pass flying colors DISTRIBUTORS INQUIRIES INVITED Call Paul Major 413 525-4110 maf decals Custom decals Manufacturers ~ NORTHEAST SCREEN GRAPHICS 21 FISHER AVE. EAST LONGMEADOW MA 01028 TEL 413-5254110 1/eScale$2O 1 Scale Best Europes leading manufacturer Pilots Supply fully positional figures National Scale Champs dress pilots known apparel Accessories include Helmets les Sun Glasses Bobble Hats Baseball Caps Floppy Hats Bone Domes Oxygen Masks Maewests popular types WW WW II sports one-piece suit stripes lall colorsl NATO one-piece suit map pockets lolive greenl glider pilots turtle neck sweaters floppy hat sun glasses Standard pilot tan pants simulated leather jacket fur collar baseball cap sun glasses pilots lightest ever come painted dressed ready fly 1/ Scale 0 1 Scale 0 Plus $500 postage handling airmail Have fun 1/a Scale parachutist ram chute rip-stop nylon ready servos Takes standard flight pack makes $9000 E OrderingPius $10 asy. fast deliveryPostage Handling send phone VISA MasterCard Number AR DESIGNS 81 OLD WORKSHOPS FFORDDDERWEN e RHYL CL WYD UK e LLIS2YR January 1988 49 Bill Liscombs exquisite retract gear quarter-scale Sailpianes now available limited quantities wheel shown 3-in diameter details column 6595 6895 6475AVAILABLE AT AMERICAS6475 FINEST HOBBY SHOPS Tel 0745-53987 ease models contact runway ware soft tires tail-dragger model Scale modelers have little choice wheel placement either tread width fore aft direction since copying prototype Some Scale models have main wheels quite far aft means CG can close wheel centers especially tail-high landing CG near wheels ground-loop tendency reduced P-S 1 Mustang real problem arrangement possibility tail may too high land ing time CG now almost directly above wheel centers nose-over results Except nasty inclination main gear lo cation P-S 1 very close ideal model ing purposes best tail-draggers ground handling choosing model subject main gear lo Hoitw Horn Old Timer -i1k LRRZOs t sos cIUtodtL RD BREAKER 1941 BROOKLYN DODGER 56 cabin EWE5T* Retail 552g5INTRoDucToRY PRICE*53900 1938 Record Breaker 96 $6956 tS3SZipper 54$5336 1938 Kloud King 63 $42 36 1991 Brigidier 56 $4076 1941 5uper Qoaker 78 $72 76 1948 50 Long 50$3836 1936 Buccaneer 84 $5990 1938 Clipper MKI 72s4156 1937 DalIa/re 188 $75 16 1935 Miss America 84 $7196 1901 Playboy Sr 80 $5116 1991 Playboy Jr 54 $3116 1938 Powerhoose 89 $53 S6 1908 Sailplane 78 $8476 1938 Trenton Terror 72 $4876 1948 Ranger 06$3196 1939 Korda Wake 44 $1916 1939 Mercury 72 $5836 kits qualify 5AM events EF & N/C feature highest quality machine cut & sanded parts Superior alt Competition sheet sod strip wood wire 5 window material PtaOs orig FF hot models ore easily convertible 3ch /C KIT5 Sailpianes Electric power Gas Hobby Horn SENSOAR Glider 78 $1888 Midway Model GNOME R/G Hand Launch Glider$29t8 Jolly Models FLINGER R/G HLG 58 Span $24tt Midway Model FAST EDDIE Aerobatic /05 Elec$19tO Jolly Models ELECTRIGUS Electric Glider 05s$3258 Leisure PLAYBOY SR 67 Gear 05 Elect $3008 Astro ASTRO SPORT 37 Direct 05 Elect $2250 Leisure RASP 37 Direct 05 Electrics $2258 Midway ULTRA MK IV 86 Geared 84 EP $3900 Midway FLYING QUAKER 84 40-454 stroke $6476 Oks/Midway DENNY JR 72 Alum Cowel $6396 p*OOO 005A00U01 i 72 051 05 FULL LINE OF ELECTRIC SYSTEMS 5 Parts Avail SHIPPING & HANDLING 64 Page CATALOOUE Up $880 add $130 $208 PP/tot Gloss $881 $2000 add $225A copy witl sent $2001 $9508 add $388 free--when requested $4581 $7008 add $358 order over $7000 add $400 HOBBY HORN CA Addressees add 05 tao 15173 Moran St [At Send MO \/isa/MC#-rEmp o Bow 2212 Check allow up 30 Westminster Ca 92684 days CR clearance 714 8938311 COD Esact Charges plus $158 Hdl Cash Only [AftHcs 714 8951203] cation could deciding factors eliminates prototype consideration Wheels far forward CG can spell trouble Bob Dolly Wiseher S-221 Lapham Peak Rd Delafield WI S30J8 RC Soaring/Blakeslee Continued page 49 must also thank Jack COGG offer ing host international Duration event clubs Dash Cash cross-country race FAI-sanctioned F3H event 87 COGG knows handle international contest think will international Duration event not-too-distant future first need workable rules four five coun tries interested having go also need careful international Duration efforts dilute F3B programs F3B what exists international Sailplane competition must make sure F3B gets maximum support International Duration would specialty event RC Soaringmuch F3H CrossCountry Racing now would fill void fliers Durating dont like building planes Speed Distance tasks Which leads us next bit Whats ultimate Thermal ship Much interest international Duration contest would center what kind Sailplane would turn Out ultimate F3B Speed Distance tasks plus winch war have forced designers pretty tight box de signing Duration mind parame ters would seem opened up considerably Three general categories design can envi sioned 1 The traditional rudder/elevator polyhe dral floater Well perhaps floater apt term since talking about Windrifter polyhedral ship can move out requiredsomething like Larry Jollys 128-in-span Meteor its Eppler 205 airfoil larger polyhedral ships have de veloped Britain Open Class competi tions run 130 160 in span typically have good moving airfoil like Ep pIer 193 Dry wing loadings about mne ounces per square foot low teens Printed below letter Bernard Henwood leading designers breed Duration Sailplane Youll read what Bernard favors about big polyhedral ships 2 The modern straight-wing Thermal com petition design typified Bob Dodgsons 144 Model Aviation 124-in-span Windoong Bob has long maintained considerable justification going re sults recent Nats Windsong better all-around Duration ship because can ride out light stuff no-lift days can still cope windy conditions owing its camber-changing wing Eppler 214 airfoil good professor designed 214 specifi cally all-around Duration flying 111% thick its normal configuration has quite bit undercamber rear half tricky part designed camberchanging Raising flaps ailerons 60 takes Out undercamber produces go fast wing section fast F3B league faster what used thermal compe titions landings flaps go down 90 ai lerons go up about 30 so-called INTRODUCING NEW COLD WEATHER FRIEND YOU CAN COUNT ON TRANZMITTEN o Simple yet very effective 0 Keeps out wind cold o Will restrict hand motions o Made USA AMA modeler oFits Tx-Sturdy construct oPolyester filled nylon quilting oCotton jersey lining lD label 0Velcro closuresfastSure fit oChoose Red Blue Brt Orange AMA patch included yours well sew free NO POSTAL HANDLING FEE send patch color choice SKY-HI ENTERPRISE 422E 20th AVE COLUMBUS OHIO 43201 SATISFACTION GUARANTEED AIR WOLF EPOXY FIBERGLASS FUSELAGES TAKES MOST 50-60 MECHANICS OTHER MODELS AVAILABLE LARRY JOLLY MODEL PRODUCTS $20000 5501 WCOMO SANTA ANA CALIFORNIA 92703 714 826-6861 American Eaglet first light-plane receive type certificate Anercon Eaglet la ~in~1ts carry two ooered byan LTSO 05 notorpeople 45 horsepower oluchconosPre-pdinLisureaThe Eaglet conplote flight systen 0603A 1930s contemporary Aeronca C3 Taylor Cubs Health Parasol Pietenpol Air Camper Eaglets gentle flying characteristics reason flying schools day chose standard instructional aircraft Leisures easy-to-build scale model kit Ameri can Eaglet 05 electric powered shares gentle flight characteristics full scale aircraft Scaled 18 inches-to-foot model features span 62 inches wing area 571 square inches Its lightweight structure 4041 oz flying weight allows low wing loading 104 ounces per square foot combined Leisure flight system turning 11 x 5 prop flight performance spectacular Takeoff occurs after 20 foot ground roll climb-out brisk model has thermaled moderate lift conditions Gentle landings breeze Scale details documentation included plans make scale contest winner aJree copy Leisures new full color catalog send stamped self-addressed business sized envelope Leisure Electronics Inc 22971 Thron Way Unit B bsguna Hills CA 92653 Leisure crow configuration butterfly call in Europe effective method descending quickly building up speed Bob doesnt advocate ballasting Windsong because can handle normal winds surfaces raised reflexed bit some top fliers use ballast Surprising may sound Windsong relatively lightly loaded plane weighs 64 69 oz wing loading nine ounces per square foot So see planes categories two really have about similar loadings 3 current breed F3B designs Its fact planes designed launch off superstrong winches fly very fast Speed Distance tasks precisely because planes such fast efficient machines can cover huge amount ground looking lift climb smartly find typical F3B ship about 120-in span loading 12 14 oz per sq ft Quabeck air foils have popular past few years new scene 87 RG 15 section developed Rolf Girsberger Swiss team manager Achmer Con trary what shown earlier three-views Reinhard Liese used RG-15 worldchamps-winning Epsilon said improve ment Speed going Quabeck Girsberger sections same order magnitude went Eppler 193 Quabeck like 15 sec international Duration contest specify braided nylon line perhaps standard winch horrors F3B ships would give up some mind-boggling zoom launches would still outlaunch other types owing superior speed line theyd still zoom pretty well As point reference six-minute F3B Du ration task pretty much automatic decent weather guys launching 250 ters international Duration event would have longer slots flight times 10 15 minutes would new experience body Well theres three points view ulti mate Thermal ship Im sure have own ideas said above thats what would make event interesting exciting youd like write tell us about kil ler design Id pleased print views British Open Class Thermal soarers have corresponding Bernard Henwood recently sent lengthy letter some interesting parts pertaining all-out Thermal soarers seems Brits have ahead us going large ships Thermal competitions regularly use planes re serve cross-country comparable size Sagitta-XC UMP Comet Bernard edits Sheffield Club newsletter very classy publication way recently volunteered take over George Stringwell editorship Soarers publication BARCS British Association Radio Control Soarerssame NSS Bernard designer Stiletto series Thermal ships have wingspans ranging 100 150 have built mostly withoutailerons An unusual feature Bernards planes Sheffield System wing construction uses aluminum tubes spars built-up construc tion Depending size wing two three tubes used parallel root tubes held together flat aluminum plates drilled accept three tubes used root system tapers two half way poly break uses tube tip section tubes used accept wing rod also hold ballast ingeni ous system some excerpts Bernards letter Since beginning 1984 Stilettos have gained over 80 places Open-entry competi tions including 24 places National-level com petitions 12 first places majority places have won 136-in 145-in versions BARCS league events 100-in version has also done well both Open 100-inch events well Sportsman task double- triple-task events held Nats year Obviously have done myself despite absence plans time five Stilettos being flown BARCS Northern League 1985 four top eight places Northern League went Stilettos subsequently flown second place League championship Ironically although criticize 158-in Super Stiletto being too big has given convincing League win flew Out both 15-minute flyoff slotsleaving nearest competitor over 10 minutes behind total time am still state euphoria after winning Open Nats Basically think OK flown large open areas such airfields abil ity cover ground seen long way off important other hand com petitions flown school fields bounded buildings and/or trees well Continued page 148 January 1988 145 electric scale American Eaglet tAw ~5ATLYTE C ceent free fight fGoorO5 2 2 tada c* iigspan 8aWeghI 32438 oz pis te4 ba RC Soaring/Blakeslee Continued page 145 often littered goal posts Situations big planes relative lack maneuverability definite handicap suppose case horses courses last letter said would comment predominance rudder/elevator models Open competitions Basically think ab sence Speed Distance tasks removes need ultrafast precise model response longer Duration slots 15 minutes flyoff slot increases need positive stability will allow model easily flown greater heights distances greater dihedral rudder/elevator models track better aileron models E mga pilots 1 1/6 scale fully poseable 12 action pilots dressed removable fabric flight gear time No painting assembly required WWI & Civilian weigh 6 oz WWII pilot has removable Parachute Mae West weighs 8 oz Add $325 per figure P&H Calif res add sales tax Allow 10 days delivery Note Pilots can also fly 1/5 scale ships Send Check money order MGA Enterprises PO Box 626 Dept Fresno Calif 93709 148 Model Aviation light turbulence tend stabilize themselves need control inputs affect wing efficiency comparison aileron-equipped Thermal soarers less dihedral susceptible minor turbulence will track steadily themselves require flying cor rection R/E models time aile ron moved adversely affects efficiency wing section attached bad turbulenceor flying sites proxim ity buildings other obstacles makes diffi cult operate larger modelsailerons come own However 85% 95% time R/E mod els entirely adequate being surprising economy simplicity construction operation attractive majority Open competition fliers Given simplicity hand-towing sur prising Open competition flourishes F3B languishes Now comes flaps flaperons different ball game going teresting next year see will start used exercise influence Open Class designs way hope likely outcome increased model complexity would probably decline number people competing would want see Open suffer F3B syndrome ideal would lOOs become genuine Standard people compete realistic terms would less equipment competition match piloting skills Having said have schemes laid hilly flaperonned Open model just cannot resist technical/practical challenge Open competition presents Thanks interesting insights Bernard Bernard mentioned horses courses think hit nail head Different fliers will think different planes will best suited expected conditions thats what makes horse racing what testing differences opinion As outlined earlier international Duration event would likely see different types planes type might well par ticular day site fail miserably another day place Wouldnt interesting ex citing see what happens fine art thermal flying Buyers Bob Dodgsons kits already familiar fol lowing piece written Bob cluded building instructions kits informative nicely written thought Sailplaners should have opportu nity see before getting Bobs piece just want mention viewed Bobs two building videotapes strongly recommend thinking building Dodgson kit Come think foam-wing building tape Dave Banks has neat hints Sailplaner would find time money well spent rent other tape shows Dave Jake Watkins building Bobs taco-shell fuselages also very worthwhile first-time builder $15 deposit tape plus $10 shipping/handling tape $15 S&H two tapes Send $45 Bob see ad magazine address show tapes over couple club meetings send back get $30 back Such deal Incidentally spoke Al Doig just after re turned contest Richland contest won non other D Banks Al said never seen better contest flying anyone So Dave knows build winning planes knows fly too Now Mr Dodgson times have heard someone Thermal contest say always get sink time its time fly theres no lift other people seem get air times time What secrets enable some fliers find lift nearly time fly article assumes contest prop erly run sandbagging deplorable crutch small-minded unsportsmanlike competitor allowed After anyone can max flight goes up tow after seeing someone else spot lift Without doubt great Thermal fliers have gift Most skills involved however can learned four basic ingredients Thermal flying 1 Being decisive knowing prob able areas look lift given timeand having guts go 2 Being able recognize workable lift no matter weak plane passes through being seduced turbulent air workable 3 Having plane flying skills neces sary work lift efficiently possible moving out fast necessary 4 Knowing leave dying thermal push stick forward reflex flaps force plane quickiy fly out bad area rather aimlessly flounder around down air less decisive fliers often seen doing ELEVENTH ANNUAL MODEL HOBBY TRADE SHOW INDUSTRYMEMBERSONLY FRFDAYJAN8 1988 1OAM-5PM GENERAL PUBLIC RDAY JAN 9 1988 10AM 6PM GENERAL PUBLIC AY JAN 10 1988 10AM 5PM SEE tHE LAIESI PRODUCTS AND VISIT WITH MAJOR MANUFACTURERS AND DISTRIBUTORS OF MODEL AIRCRAFT MODEL ENGINES GIANT RAFFLE MODEL BOATS RADIO CONTROL SYSTEMS SHOP L CARS MODELING ACCESSORIES * POND R TRACK DESi Will1under 6-free wi adult ADMISSION Adults $500 under 13- $300 STATIC DISPLAY COMPETITION IN MANY CATEGORIES tiji iIIafL~ J ni g iIi I- iuSf rWiI U Ie7 Es]~ [e]51 intl U INTERNATIONAL MODELER SHOW OFFICE PO Box 10127 Costa Mesa CA 92627 Ph 1714 548-4700 Knowing look lift lot like playing cards best players ones keep track what cards have dealt can know what odds given time good Thermal flier watches sky other fliers very carefully trying establish probable patterns lift cycle enables him fig ure about what part sky due kick off thermal time fly Sometimes massive sink cycle killing just trying different part sky about best can general unless have sure knowledge thermal thermal-searching way downwind find thermal downwind cannot ride long because plane will soon blown limits vision find thermal flying downwind can find yourself big trouble much safer sesrch lift upwind off sides Watch closely telltale signs lift within half-mile radius field know circling hawk eagle buzzard seagulls can dead giveaway existence lift Small birds like swallows can just reliable feed small insects can become air borne thermals swallows dart ing around small section sky probably thermal Sometimes may able spot column dust debris such paper thistledown air thermal indicator suddenly find yourself climbing out tow higher usual wind conditions have probably encountered thermal Go Wind shifts another thermal indicator sudden temporary shift wind direction can indicate thermal nearby sucking air toward air suddenly warms wind dies may standing eye thermal Sometimes can see wind patterns nearby taIl grass indicate multiple circu lar wind directionsanother thermal indicator Look variations ground cover ter rain Areas dark will absorb heat faster surrounding lighter-colored areas will likely areas kick off thermals Ridges can also help thermals break loose lit tle wind slope facing sun another possi ble thermal-generating area know about old standbys such parking lots darkroofed buildings nothing else can always try Slope Soar off windward face build ing off stand tall trees Two difficult things learn Thermal flying being able recognize what lift workable best work general know thermals start ground spread out funnel shape rise funnel goes downwind rises wind also blows entire funnel downwind including base planes thermal higher you should look thermal up wind higher planes will normally have follow thermal downwind else will blow past plane will end up down side Youll want get out down air fast high working thermals seem have noticeable core hot spot usually best work flat efficient gentle circle turns Some thermals have tiny areas strong lift can best worked standing Glider its wing tip doing tight fast eight-foot-diameter circles centered hot spot way can climb Out some thermals particularly very low altitudes Gliders outstanding performers very tight thermals Other thermals seem require fly upwind climbing leg slowly verge stall quite letting plane stall whip ping around downwind turn quickly faster speed low altitudes stall false move can spell difference between max flight premature landing second half Bobs article will next months column Late news Bob Dodgson Just about send column received letter Bob enclosed such important inter esting information figured word should get out ASAP Bob wrote am really excited about Automatic Flap-Aileron Reflex Trim system described enclosed sheet works well Pixy am converting Windsong over same system three servos such simple yet effective solution rather complex problem [can hardly contain enthusiasm hope no takes offense name device am victim rather per verted sense humor couldnt help self Please Bob family magazine said sheet has diagram side explanation other wont try include diagram column because dont think would show up too well reduced version trust Bob will forgive saying controls planes first glance look like plumbers nightmare once study what everything doing its quite logical new device adds another pushrod moving part works cares following some paragraphs explanation January 1988 149 21230 flamincua Rd flathII WA 90021 206 7760067 F Dodgson Design thrilled able offer customers new effective control innovation can installed new Windsongs Camanos Pixies easily retrofitted ones already built amazing mixer designed Gary Brokaw Spokane WA innovative Windsong flier call new device Automa tic Flap-Aileron Reflex Trim simply AFART short Now first time anyone can have full-span flap aileron reflex single trim lever three servos Pixy Ca mano Windsong Aileron trim prac tical before Pixy Camano due added weight extra servo minimal space fuselage Now easily accom plished nearly zero weight gain well no increase aileron slop advantages using AFART Windsong 1 weight 1 /2-oz servo can saved 2 effective aileron differen tial can obtained because no M-1 mixer needed simple offset servo output arm can used aileron servo 3 centering precise ailerons since M-1 mixer needed since AFART effectively locks place transparent far aileron action concerned until called action flip flap trim lever reflex en tire trailing edge AFART consists simple A-in hard wood dowel cut 2 long Ca mano Pixy longer Windsong wel becomes support two belleranks normally used kits two bellcranks ]liselage hooked up aileron pushrods dowel pivots about screw rubber grommet bottom fiAselage slides slot cut W9 ply plate no actuation AFART dowel rests against back slot retained small rubberband position normal place bellcranks Actuation flap trim pulls dowel bellcranks ward thus moving both ailerons up Back Bob s explanation Adjust flap trim trim down flaps perfect neutral trim full up flaps 60 negative position Adjust AFART pushrod ailerons affected positive flaps used flaps neutral move trim lever up reflex flaps AFART pulled forward just far enough also reflex ailerons 60 like flaps Properly installed adjusted AFART should require no further service should give precise neutral reflex flap positions Since 900 flaps built-in elevator trim com pensation unbelievably effective land ing speed glide-path control Windsong fliers find rarely use aileron spoiler function provided fourth servo Good fliers however rely heavily perform ance edge can get reflexing entire trailing edge wing Now anyone can use inexpensive four-channel radio get full trailing edge re flex capability fingertipand three servos given up extra servo additional trim lever fool withalong aileron spoiler function normally used anyway have high-techers realize builders Dodgson planes have little idea what about others probably have no idea best thing send Bob SASE re quest AFART bulletin youre en close two additional stamps ask Bobs nice little catalog can go through cat alog send planes youre stronger person am hope yours have happy holiday seasonand Santa brings new radio go new Sailplane kit know will under tree Byron Blaskeslee 3134 Winnebago Dr Seda ha CO 80135 RC Electrics/Kopski Continued page 51 just some possibility profes sionally duplicated tapes will made available future materializes Ill let know right future RC Electrics col umn Earlier mentioned Keith Shaw thats hard having fight off tempta tion devote entire column works extraordinary modeler Keith outstanding showman splendid models spectacular piloting three new models him year several other favorites past total seven Electrics Keith owns total 15 new ones included Waco Taperwing Dassault Mirage III jet prop Zlin 526 Aside repeatedly flying own planes Keith sought out fly Elec tries brand-new Beyond Extra 230 Kits Available * Now Three Sizes * Kits Stand Off Scale 1/ Scale 96 wing span $20995 plus $15 shipping 30% Scale 87 wing span $19995 plus $15 shipping Scale 721h wing span $16995 plus $8 shipping R/C EXTRAS RR Box 28B Sergeant Bluff IA 51054 Cal P ceson Pre-Builts 712-943-4102 150 Model Aviation WHEEL BEARINGS Ideal Ducted Fans Shortens Takeoff Run Eliminates Axle Friction Renews Old Worn Wheel H ilizes Wheel Wheel Pa Eliminates Wheel Wobble Steadies Nose Wheel Steering THESE BRONZE-OIL WHEEL BEARINGS ARE AVAILABLE IN THREE SIZES PACKAGED FOR TWO WHEELS 5/32 DIA $200 3/16 DIA $250 1/4 DIA $325 Please add 90C postage & handling A J PRODUCTS 8470 HERITAGE DR CLARKSTON MICH 48016 313 625-5484 SEE YOUR DEALER FIRST WORLD CLASS &5$et 0prOP Tony Frackowiaks Challenge IV Kit Atlanta Kit Dash Kit Hattori Headers Pipes AMA Et PAl RC Aerobatic Specialties PO Box 388914-248-8603 Lincoindale NY 10540 Send $100 catalog
Edition: Model Aviation - 1988/01
Page Numbers: 48, 49, 144, 145, 148, 149, 150
SCALE SCENE Bill Liscomb more-or-less Scale Slope correspondent Southern Califor nia has gone manufacturing end things hope photos convey quality Bills retractsIm very impressed quarter-scale Sailpianes beautifully made aircraft-grade materials wheel pictures three inches di ameter unit can accommodate up 3 /2 inches available two sizes planes Standard-size units have three-inch-long mounting brackets planes up 10 lb Heavy-Duty jobs have six-inch mounts ships over 10 lb Standard size weighs 5 oz wheel Scale builders will course have operating retract doors wheel coming down will push open doors Bill recommends light elastic bands closing retracts can easily oper ated Pattern-type servo retract servo isnt necessary mechanism locks both Up Down positions no landing loads transmitted servo Prices $45 Standard unit $50 H-D plus ibout $3 postage directly Bill Wilshire Model Center Los Angeles CA also selling Bill knows theres huge market quarter-scale retracts growing number Scale Sailplane builders will certainly appreciate having high-quality unit like put finishing touch pride joy cost quite reasonable take close look calculate much time trou ble would involved trying make self Contact Bill 7034 Fern Place Carlsbad CA 92008 later letter Bill says cant wait till Memorial Day Scale Fun Fly Soaring Social Richland See last months column details BB Im already planning Gliders take Quarter-scale terest rise down Last Sunday seven big Gliders Torrey Pines cliff Enclosed photos Angelo Oronos SG-38 Krick kit model museum qualitynote functional seat harness pilot wears custom-made flight suit sports gold bracelet right wrist took Angelo two years complete Does look little tense photo Roke Scale kits August column some photos beautiful Roke Scale Sail plane kits rough idea what cost recently talking phone Tony Ar noux importer big beauties asked him kits hand exactly what prices should explain Tonys real job importing German auto parts bringing small number Roke kits just labor love Anyway Tony said 47-meter 15 ft 4 SB 10 41-meter 13 ft 4 ASW 19T Both $545 plus truck freight boxes about eight feet long cant go UPS Both ships look absolutely gorgeous catalog photos Im sure perform well look complete info contact Tony Arnoux 1744 NW 82 Ave Miami FL 33126 nice Roke catalog also includes Scale accessor ics like spoilers wing joiners retracts decals seats can ordered $4 letter Canadian friend following letter sent Jack Nunn RR 1 Midhurst Ontario LOL lXO Canada driving forces Central Ontario Glider Group COGG interested comments Sep 48 Model Aviation Radio Conot Soaring Byron Blakeslee photo Hake catalog its ineur gorgeoua ASW 19T Model spans 41 meters Kit German import available $545 plus freight Tony Arnoux Miami FL Bill Llscomb about iauncn Angelo Oro nos SG-38 its maiden flight Torrey Pines CA Slope site flight perfect Closeup pilot Angelo Oronos SG 38 Plane German primary trainer used 1938 model museum quality Heres 158-in-span Super version Bernard Henwoods Stiletto design young member Englands Sheffield club holds Airfoil Eppler 193 wing area 95 sq ft Design has won contests UK Theres info column tember 1987 issue Model Aviation regarding Percentage Slot contests popular UK COOG have used format last two years major contest season very well accepted fact recent survey 68% members preferred Man-on-Man usual Thermal Duration contest has disadvantagesparticularly frequency prob lem five Out 22 same fre quency happened us year good CD can usually work things out big advan tage course virtually eliminate luck factoras winner max Out lone thermal day club thinking holding Man on-Man contest care get touch Id glad forward copy rules some ideas running successful con test another matter Canadian Soaring So ciety formed just last year kindly mentioned column will have over 200 members end year About 60% Canadian rest US other countries Again anyone wish ing have information CSS may drop line Finally am also very keen interna tional event Duration know theres lot enthusiastic support other Canadian Sailplane fliers COGO would volunteer act hosts initial event enough worldwide enthusiasm can attained Thanks letter Jack offer M-o-M rules new RC frequen cies opening up now Ive got feeling more clubs will going format enjoy kinds competition auto racing boat racing football track fieldyou name M-o-M has feeling real competition mean its like being actual race versus racing against clock Continued page 144 DISTRIBUTED BY ZJfflU83Z5111 7550 San Gaboel Road cadeo CA 93422 496-1717 *7 Giant ScaletieSheets *80 Size38Sheets *40 SIzet38Sheets *Propeller Decals inWT 6 Sheets -3 sizes Ca *Kill Markings12Sheets *Nomenclature Markings 3 Sizes -12 Sheets inBlack White copy * Letters Numbers 1234 413/16 10 Colors * Stsrs 10 Colors 11 Sizes plus Sheet OR Assorted Sizes Major Decals pass flying colors DISTRIBUTORS INQUIRIES INVITED Call Paul Major 413 525-4110 maf decals Custom decals Manufacturers ~ NORTHEAST SCREEN GRAPHICS 21 FISHER AVE. EAST LONGMEADOW MA 01028 TEL 413-5254110 1/eScale$2O 1 Scale Best Europes leading manufacturer Pilots Supply fully positional figures National Scale Champs dress pilots known apparel Accessories include Helmets les Sun Glasses Bobble Hats Baseball Caps Floppy Hats Bone Domes Oxygen Masks Maewests popular types WW WW II sports one-piece suit stripes lall colorsl NATO one-piece suit map pockets lolive greenl glider pilots turtle neck sweaters floppy hat sun glasses Standard pilot tan pants simulated leather jacket fur collar baseball cap sun glasses pilots lightest ever come painted dressed ready fly 1/ Scale 0 1 Scale 0 Plus $500 postage handling airmail Have fun 1/a Scale parachutist ram chute rip-stop nylon ready servos Takes standard flight pack makes $9000 E OrderingPius $10 asy. fast deliveryPostage Handling send phone VISA MasterCard Number AR DESIGNS 81 OLD WORKSHOPS FFORDDDERWEN e RHYL CL WYD UK e LLIS2YR January 1988 49 Bill Liscombs exquisite retract gear quarter-scale Sailpianes now available limited quantities wheel shown 3-in diameter details column 6595 6895 6475AVAILABLE AT AMERICAS6475 FINEST HOBBY SHOPS Tel 0745-53987 ease models contact runway ware soft tires tail-dragger model Scale modelers have little choice wheel placement either tread width fore aft direction since copying prototype Some Scale models have main wheels quite far aft means CG can close wheel centers especially tail-high landing CG near wheels ground-loop tendency reduced P-S 1 Mustang real problem arrangement possibility tail may too high land ing time CG now almost directly above wheel centers nose-over results Except nasty inclination main gear lo cation P-S 1 very close ideal model ing purposes best tail-draggers ground handling choosing model subject main gear lo Hoitw Horn Old Timer -i1k LRRZOs t sos cIUtodtL RD BREAKER 1941 BROOKLYN DODGER 56 cabin EWE5T* Retail 552g5INTRoDucToRY PRICE*53900 1938 Record Breaker 96 $6956 tS3SZipper 54$5336 1938 Kloud King 63 $42 36 1991 Brigidier 56 $4076 1941 5uper Qoaker 78 $72 76 1948 50 Long 50$3836 1936 Buccaneer 84 $5990 1938 Clipper MKI 72s4156 1937 DalIa/re 188 $75 16 1935 Miss America 84 $7196 1901 Playboy Sr 80 $5116 1991 Playboy Jr 54 $3116 1938 Powerhoose 89 $53 S6 1908 Sailplane 78 $8476 1938 Trenton Terror 72 $4876 1948 Ranger 06$3196 1939 Korda Wake 44 $1916 1939 Mercury 72 $5836 kits qualify 5AM events EF & N/C feature highest quality machine cut & sanded parts Superior alt Competition sheet sod strip wood wire 5 window material PtaOs orig FF hot models ore easily convertible 3ch /C KIT5 Sailpianes Electric power Gas Hobby Horn SENSOAR Glider 78 $1888 Midway Model GNOME R/G Hand Launch Glider$29t8 Jolly Models FLINGER R/G HLG 58 Span $24tt Midway Model FAST EDDIE Aerobatic /05 Elec$19tO Jolly Models ELECTRIGUS Electric Glider 05s$3258 Leisure PLAYBOY SR 67 Gear 05 Elect $3008 Astro ASTRO SPORT 37 Direct 05 Elect $2250 Leisure RASP 37 Direct 05 Electrics $2258 Midway ULTRA MK IV 86 Geared 84 EP $3900 Midway FLYING QUAKER 84 40-454 stroke $6476 Oks/Midway DENNY JR 72 Alum Cowel $6396 p*OOO 005A00U01 i 72 051 05 FULL LINE OF ELECTRIC SYSTEMS 5 Parts Avail SHIPPING & HANDLING 64 Page CATALOOUE Up $880 add $130 $208 PP/tot Gloss $881 $2000 add $225A copy witl sent $2001 $9508 add $388 free--when requested $4581 $7008 add $358 order over $7000 add $400 HOBBY HORN CA Addressees add 05 tao 15173 Moran St [At Send MO \/isa/MC#-rEmp o Bow 2212 Check allow up 30 Westminster Ca 92684 days CR clearance 714 8938311 COD Esact Charges plus $158 Hdl Cash Only [AftHcs 714 8951203] cation could deciding factors eliminates prototype consideration Wheels far forward CG can spell trouble Bob Dolly Wiseher S-221 Lapham Peak Rd Delafield WI S30J8 RC Soaring/Blakeslee Continued page 49 must also thank Jack COGG offer ing host international Duration event clubs Dash Cash cross-country race FAI-sanctioned F3H event 87 COGG knows handle international contest think will international Duration event not-too-distant future first need workable rules four five coun tries interested having go also need careful international Duration efforts dilute F3B programs F3B what exists international Sailplane competition must make sure F3B gets maximum support International Duration would specialty event RC Soaringmuch F3H CrossCountry Racing now would fill void fliers Durating dont like building planes Speed Distance tasks Which leads us next bit Whats ultimate Thermal ship Much interest international Duration contest would center what kind Sailplane would turn Out ultimate F3B Speed Distance tasks plus winch war have forced designers pretty tight box de signing Duration mind parame ters would seem opened up considerably Three general categories design can envi sioned 1 The traditional rudder/elevator polyhe dral floater Well perhaps floater apt term since talking about Windrifter polyhedral ship can move out requiredsomething like Larry Jollys 128-in-span Meteor its Eppler 205 airfoil larger polyhedral ships have de veloped Britain Open Class competi tions run 130 160 in span typically have good moving airfoil like Ep pIer 193 Dry wing loadings about mne ounces per square foot low teens Printed below letter Bernard Henwood leading designers breed Duration Sailplane Youll read what Bernard favors about big polyhedral ships 2 The modern straight-wing Thermal com petition design typified Bob Dodgsons 144 Model Aviation 124-in-span Windoong Bob has long maintained considerable justification going re sults recent Nats Windsong better all-around Duration ship because can ride out light stuff no-lift days can still cope windy conditions owing its camber-changing wing Eppler 214 airfoil good professor designed 214 specifi cally all-around Duration flying 111% thick its normal configuration has quite bit undercamber rear half tricky part designed camberchanging Raising flaps ailerons 60 takes Out undercamber produces go fast wing section fast F3B league faster what used thermal compe titions landings flaps go down 90 ai lerons go up about 30 so-called INTRODUCING NEW COLD WEATHER FRIEND YOU CAN COUNT ON TRANZMITTEN o Simple yet very effective 0 Keeps out wind cold o Will restrict hand motions o Made USA AMA modeler oFits Tx-Sturdy construct oPolyester filled nylon quilting oCotton jersey lining lD label 0Velcro closuresfastSure fit oChoose Red Blue Brt Orange AMA patch included yours well sew free NO POSTAL HANDLING FEE send patch color choice SKY-HI ENTERPRISE 422E 20th AVE COLUMBUS OHIO 43201 SATISFACTION GUARANTEED AIR WOLF EPOXY FIBERGLASS FUSELAGES TAKES MOST 50-60 MECHANICS OTHER MODELS AVAILABLE LARRY JOLLY MODEL PRODUCTS $20000 5501 WCOMO SANTA ANA CALIFORNIA 92703 714 826-6861 American Eaglet first light-plane receive type certificate Anercon Eaglet la ~in~1ts carry two ooered byan LTSO 05 notorpeople 45 horsepower oluchconosPre-pdinLisureaThe Eaglet conplote flight systen 0603A 1930s contemporary Aeronca C3 Taylor Cubs Health Parasol Pietenpol Air Camper Eaglets gentle flying characteristics reason flying schools day chose standard instructional aircraft Leisures easy-to-build scale model kit Ameri can Eaglet 05 electric powered shares gentle flight characteristics full scale aircraft Scaled 18 inches-to-foot model features span 62 inches wing area 571 square inches Its lightweight structure 4041 oz flying weight allows low wing loading 104 ounces per square foot combined Leisure flight system turning 11 x 5 prop flight performance spectacular Takeoff occurs after 20 foot ground roll climb-out brisk model has thermaled moderate lift conditions Gentle landings breeze Scale details documentation included plans make scale contest winner aJree copy Leisures new full color catalog send stamped self-addressed business sized envelope Leisure Electronics Inc 22971 Thron Way Unit B bsguna Hills CA 92653 Leisure crow configuration butterfly call in Europe effective method descending quickly building up speed Bob doesnt advocate ballasting Windsong because can handle normal winds surfaces raised reflexed bit some top fliers use ballast Surprising may sound Windsong relatively lightly loaded plane weighs 64 69 oz wing loading nine ounces per square foot So see planes categories two really have about similar loadings 3 current breed F3B designs Its fact planes designed launch off superstrong winches fly very fast Speed Distance tasks precisely because planes such fast efficient machines can cover huge amount ground looking lift climb smartly find typical F3B ship about 120-in span loading 12 14 oz per sq ft Quabeck air foils have popular past few years new scene 87 RG 15 section developed Rolf Girsberger Swiss team manager Achmer Con trary what shown earlier three-views Reinhard Liese used RG-15 worldchamps-winning Epsilon said improve ment Speed going Quabeck Girsberger sections same order magnitude went Eppler 193 Quabeck like 15 sec international Duration contest specify braided nylon line perhaps standard winch horrors F3B ships would give up some mind-boggling zoom launches would still outlaunch other types owing superior speed line theyd still zoom pretty well As point reference six-minute F3B Du ration task pretty much automatic decent weather guys launching 250 ters international Duration event would have longer slots flight times 10 15 minutes would new experience body Well theres three points view ulti mate Thermal ship Im sure have own ideas said above thats what would make event interesting exciting youd like write tell us about kil ler design Id pleased print views British Open Class Thermal soarers have corresponding Bernard Henwood recently sent lengthy letter some interesting parts pertaining all-out Thermal soarers seems Brits have ahead us going large ships Thermal competitions regularly use planes re serve cross-country comparable size Sagitta-XC UMP Comet Bernard edits Sheffield Club newsletter very classy publication way recently volunteered take over George Stringwell editorship Soarers publication BARCS British Association Radio Control Soarerssame NSS Bernard designer Stiletto series Thermal ships have wingspans ranging 100 150 have built mostly withoutailerons An unusual feature Bernards planes Sheffield System wing construction uses aluminum tubes spars built-up construc tion Depending size wing two three tubes used parallel root tubes held together flat aluminum plates drilled accept three tubes used root system tapers two half way poly break uses tube tip section tubes used accept wing rod also hold ballast ingeni ous system some excerpts Bernards letter Since beginning 1984 Stilettos have gained over 80 places Open-entry competi tions including 24 places National-level com petitions 12 first places majority places have won 136-in 145-in versions BARCS league events 100-in version has also done well both Open 100-inch events well Sportsman task double- triple-task events held Nats year Obviously have done myself despite absence plans time five Stilettos being flown BARCS Northern League 1985 four top eight places Northern League went Stilettos subsequently flown second place League championship Ironically although criticize 158-in Super Stiletto being too big has given convincing League win flew Out both 15-minute flyoff slotsleaving nearest competitor over 10 minutes behind total time am still state euphoria after winning Open Nats Basically think OK flown large open areas such airfields abil ity cover ground seen long way off important other hand com petitions flown school fields bounded buildings and/or trees well Continued page 148 January 1988 145 electric scale American Eaglet tAw ~5ATLYTE C ceent free fight fGoorO5 2 2 tada c* iigspan 8aWeghI 32438 oz pis te4 ba RC Soaring/Blakeslee Continued page 145 often littered goal posts Situations big planes relative lack maneuverability definite handicap suppose case horses courses last letter said would comment predominance rudder/elevator models Open competitions Basically think ab sence Speed Distance tasks removes need ultrafast precise model response longer Duration slots 15 minutes flyoff slot increases need positive stability will allow model easily flown greater heights distances greater dihedral rudder/elevator models track better aileron models E mga pilots 1 1/6 scale fully poseable 12 action pilots dressed removable fabric flight gear time No painting assembly required WWI & Civilian weigh 6 oz WWII pilot has removable Parachute Mae West weighs 8 oz Add $325 per figure P&H Calif res add sales tax Allow 10 days delivery Note Pilots can also fly 1/5 scale ships Send Check money order MGA Enterprises PO Box 626 Dept Fresno Calif 93709 148 Model Aviation light turbulence tend stabilize themselves need control inputs affect wing efficiency comparison aileron-equipped Thermal soarers less dihedral susceptible minor turbulence will track steadily themselves require flying cor rection R/E models time aile ron moved adversely affects efficiency wing section attached bad turbulenceor flying sites proxim ity buildings other obstacles makes diffi cult operate larger modelsailerons come own However 85% 95% time R/E mod els entirely adequate being surprising economy simplicity construction operation attractive majority Open competition fliers Given simplicity hand-towing sur prising Open competition flourishes F3B languishes Now comes flaps flaperons different ball game going teresting next year see will start used exercise influence Open Class designs way hope likely outcome increased model complexity would probably decline number people competing would want see Open suffer F3B syndrome ideal would lOOs become genuine Standard people compete realistic terms would less equipment competition match piloting skills Having said have schemes laid hilly flaperonned Open model just cannot resist technical/practical challenge Open competition presents Thanks interesting insights Bernard Bernard mentioned horses courses think hit nail head Different fliers will think different planes will best suited expected conditions thats what makes horse racing what testing differences opinion As outlined earlier international Duration event would likely see different types planes type might well par ticular day site fail miserably another day place Wouldnt interesting ex citing see what happens fine art thermal flying Buyers Bob Dodgsons kits already familiar fol lowing piece written Bob cluded building instructions kits informative nicely written thought Sailplaners should have opportu nity see before getting Bobs piece just want mention viewed Bobs two building videotapes strongly recommend thinking building Dodgson kit Come think foam-wing building tape Dave Banks has neat hints Sailplaner would find time money well spent rent other tape shows Dave Jake Watkins building Bobs taco-shell fuselages also very worthwhile first-time builder $15 deposit tape plus $10 shipping/handling tape $15 S&H two tapes Send $45 Bob see ad magazine address show tapes over couple club meetings send back get $30 back Such deal Incidentally spoke Al Doig just after re turned contest Richland contest won non other D Banks Al said never seen better contest flying anyone So Dave knows build winning planes knows fly too Now Mr Dodgson times have heard someone Thermal contest say always get sink time its time fly theres no lift other people seem get air times time What secrets enable some fliers find lift nearly time fly article assumes contest prop erly run sandbagging deplorable crutch small-minded unsportsmanlike competitor allowed After anyone can max flight goes up tow after seeing someone else spot lift Without doubt great Thermal fliers have gift Most skills involved however can learned four basic ingredients Thermal flying 1 Being decisive knowing prob able areas look lift given timeand having guts go 2 Being able recognize workable lift no matter weak plane passes through being seduced turbulent air workable 3 Having plane flying skills neces sary work lift efficiently possible moving out fast necessary 4 Knowing leave dying thermal push stick forward reflex flaps force plane quickiy fly out bad area rather aimlessly flounder around down air less decisive fliers often seen doing ELEVENTH ANNUAL MODEL HOBBY TRADE SHOW INDUSTRYMEMBERSONLY FRFDAYJAN8 1988 1OAM-5PM GENERAL PUBLIC RDAY JAN 9 1988 10AM 6PM GENERAL PUBLIC AY JAN 10 1988 10AM 5PM SEE tHE LAIESI PRODUCTS AND VISIT WITH MAJOR MANUFACTURERS AND DISTRIBUTORS OF MODEL AIRCRAFT MODEL ENGINES GIANT RAFFLE MODEL BOATS RADIO CONTROL SYSTEMS SHOP L CARS MODELING ACCESSORIES * POND R TRACK DESi Will1under 6-free wi adult ADMISSION Adults $500 under 13- $300 STATIC DISPLAY COMPETITION IN MANY CATEGORIES tiji iIIafL~ J ni g iIi I- iuSf rWiI U Ie7 Es]~ [e]51 intl U INTERNATIONAL MODELER SHOW OFFICE PO Box 10127 Costa Mesa CA 92627 Ph 1714 548-4700 Knowing look lift lot like playing cards best players ones keep track what cards have dealt can know what odds given time good Thermal flier watches sky other fliers very carefully trying establish probable patterns lift cycle enables him fig ure about what part sky due kick off thermal time fly Sometimes massive sink cycle killing just trying different part sky about best can general unless have sure knowledge thermal thermal-searching way downwind find thermal downwind cannot ride long because plane will soon blown limits vision find thermal flying downwind can find yourself big trouble much safer sesrch lift upwind off sides Watch closely telltale signs lift within half-mile radius field know circling hawk eagle buzzard seagulls can dead giveaway existence lift Small birds like swallows can just reliable feed small insects can become air borne thermals swallows dart ing around small section sky probably thermal Sometimes may able spot column dust debris such paper thistledown air thermal indicator suddenly find yourself climbing out tow higher usual wind conditions have probably encountered thermal Go Wind shifts another thermal indicator sudden temporary shift wind direction can indicate thermal nearby sucking air toward air suddenly warms wind dies may standing eye thermal Sometimes can see wind patterns nearby taIl grass indicate multiple circu lar wind directionsanother thermal indicator Look variations ground cover ter rain Areas dark will absorb heat faster surrounding lighter-colored areas will likely areas kick off thermals Ridges can also help thermals break loose lit tle wind slope facing sun another possi ble thermal-generating area know about old standbys such parking lots darkroofed buildings nothing else can always try Slope Soar off windward face build ing off stand tall trees Two difficult things learn Thermal flying being able recognize what lift workable best work general know thermals start ground spread out funnel shape rise funnel goes downwind rises wind also blows entire funnel downwind including base planes thermal higher you should look thermal up wind higher planes will normally have follow thermal downwind else will blow past plane will end up down side Youll want get out down air fast high working thermals seem have noticeable core hot spot usually best work flat efficient gentle circle turns Some thermals have tiny areas strong lift can best worked standing Glider its wing tip doing tight fast eight-foot-diameter circles centered hot spot way can climb Out some thermals particularly very low altitudes Gliders outstanding performers very tight thermals Other thermals seem require fly upwind climbing leg slowly verge stall quite letting plane stall whip ping around downwind turn quickly faster speed low altitudes stall false move can spell difference between max flight premature landing second half Bobs article will next months column Late news Bob Dodgson Just about send column received letter Bob enclosed such important inter esting information figured word should get out ASAP Bob wrote am really excited about Automatic Flap-Aileron Reflex Trim system described enclosed sheet works well Pixy am converting Windsong over same system three servos such simple yet effective solution rather complex problem [can hardly contain enthusiasm hope no takes offense name device am victim rather per verted sense humor couldnt help self Please Bob family magazine said sheet has diagram side explanation other wont try include diagram column because dont think would show up too well reduced version trust Bob will forgive saying controls planes first glance look like plumbers nightmare once study what everything doing its quite logical new device adds another pushrod moving part works cares following some paragraphs explanation January 1988 149 21230 flamincua Rd flathII WA 90021 206 7760067 F Dodgson Design thrilled able offer customers new effective control innovation can installed new Windsongs Camanos Pixies easily retrofitted ones already built amazing mixer designed Gary Brokaw Spokane WA innovative Windsong flier call new device Automa tic Flap-Aileron Reflex Trim simply AFART short Now first time anyone can have full-span flap aileron reflex single trim lever three servos Pixy Ca mano Windsong Aileron trim prac tical before Pixy Camano due added weight extra servo minimal space fuselage Now easily accom plished nearly zero weight gain well no increase aileron slop advantages using AFART Windsong 1 weight 1 /2-oz servo can saved 2 effective aileron differen tial can obtained because no M-1 mixer needed simple offset servo output arm can used aileron servo 3 centering precise ailerons since M-1 mixer needed since AFART effectively locks place transparent far aileron action concerned until called action flip flap trim lever reflex en tire trailing edge AFART consists simple A-in hard wood dowel cut 2 long Ca mano Pixy longer Windsong wel becomes support two belleranks normally used kits two bellcranks ]liselage hooked up aileron pushrods dowel pivots about screw rubber grommet bottom fiAselage slides slot cut W9 ply plate no actuation AFART dowel rests against back slot retained small rubberband position normal place bellcranks Actuation flap trim pulls dowel bellcranks ward thus moving both ailerons up Back Bob s explanation Adjust flap trim trim down flaps perfect neutral trim full up flaps 60 negative position Adjust AFART pushrod ailerons affected positive flaps used flaps neutral move trim lever up reflex flaps AFART pulled forward just far enough also reflex ailerons 60 like flaps Properly installed adjusted AFART should require no further service should give precise neutral reflex flap positions Since 900 flaps built-in elevator trim com pensation unbelievably effective land ing speed glide-path control Windsong fliers find rarely use aileron spoiler function provided fourth servo Good fliers however rely heavily perform ance edge can get reflexing entire trailing edge wing Now anyone can use inexpensive four-channel radio get full trailing edge re flex capability fingertipand three servos given up extra servo additional trim lever fool withalong aileron spoiler function normally used anyway have high-techers realize builders Dodgson planes have little idea what about others probably have no idea best thing send Bob SASE re quest AFART bulletin youre en close two additional stamps ask Bobs nice little catalog can go through cat alog send planes youre stronger person am hope yours have happy holiday seasonand Santa brings new radio go new Sailplane kit know will under tree Byron Blaskeslee 3134 Winnebago Dr Seda ha CO 80135 RC Electrics/Kopski Continued page 51 just some possibility profes sionally duplicated tapes will made available future materializes Ill let know right future RC Electrics col umn Earlier mentioned Keith Shaw thats hard having fight off tempta tion devote entire column works extraordinary modeler Keith outstanding showman splendid models spectacular piloting three new models him year several other favorites past total seven Electrics Keith owns total 15 new ones included Waco Taperwing Dassault Mirage III jet prop Zlin 526 Aside repeatedly flying own planes Keith sought out fly Elec tries brand-new Beyond Extra 230 Kits Available * Now Three Sizes * Kits Stand Off Scale 1/ Scale 96 wing span $20995 plus $15 shipping 30% Scale 87 wing span $19995 plus $15 shipping Scale 721h wing span $16995 plus $8 shipping R/C EXTRAS RR Box 28B Sergeant Bluff IA 51054 Cal P ceson Pre-Builts 712-943-4102 150 Model Aviation WHEEL BEARINGS Ideal Ducted Fans Shortens Takeoff Run Eliminates Axle Friction Renews Old Worn Wheel H ilizes Wheel Wheel Pa Eliminates Wheel Wobble Steadies Nose Wheel Steering THESE BRONZE-OIL WHEEL BEARINGS ARE AVAILABLE IN THREE SIZES PACKAGED FOR TWO WHEELS 5/32 DIA $200 3/16 DIA $250 1/4 DIA $325 Please add 90C postage & handling A J PRODUCTS 8470 HERITAGE DR CLARKSTON MICH 48016 313 625-5484 SEE YOUR DEALER FIRST WORLD CLASS &5$et 0prOP Tony Frackowiaks Challenge IV Kit Atlanta Kit Dash Kit Hattori Headers Pipes AMA Et PAl RC Aerobatic Specialties PO Box 388914-248-8603 Lincoindale NY 10540 Send $100 catalog
Edition: Model Aviation - 1988/01
Page Numbers: 48, 49, 144, 145, 148, 149, 150
SCALE SCENE Bill Liscomb more-or-less Scale Slope correspondent Southern Califor nia has gone manufacturing end things hope photos convey quality Bills retractsIm very impressed quarter-scale Sailpianes beautifully made aircraft-grade materials wheel pictures three inches di ameter unit can accommodate up 3 /2 inches available two sizes planes Standard-size units have three-inch-long mounting brackets planes up 10 lb Heavy-Duty jobs have six-inch mounts ships over 10 lb Standard size weighs 5 oz wheel Scale builders will course have operating retract doors wheel coming down will push open doors Bill recommends light elastic bands closing retracts can easily oper ated Pattern-type servo retract servo isnt necessary mechanism locks both Up Down positions no landing loads transmitted servo Prices $45 Standard unit $50 H-D plus ibout $3 postage directly Bill Wilshire Model Center Los Angeles CA also selling Bill knows theres huge market quarter-scale retracts growing number Scale Sailplane builders will certainly appreciate having high-quality unit like put finishing touch pride joy cost quite reasonable take close look calculate much time trou ble would involved trying make self Contact Bill 7034 Fern Place Carlsbad CA 92008 later letter Bill says cant wait till Memorial Day Scale Fun Fly Soaring Social Richland See last months column details BB Im already planning Gliders take Quarter-scale terest rise down Last Sunday seven big Gliders Torrey Pines cliff Enclosed photos Angelo Oronos SG-38 Krick kit model museum qualitynote functional seat harness pilot wears custom-made flight suit sports gold bracelet right wrist took Angelo two years complete Does look little tense photo Roke Scale kits August column some photos beautiful Roke Scale Sail plane kits rough idea what cost recently talking phone Tony Ar noux importer big beauties asked him kits hand exactly what prices should explain Tonys real job importing German auto parts bringing small number Roke kits just labor love Anyway Tony said 47-meter 15 ft 4 SB 10 41-meter 13 ft 4 ASW 19T Both $545 plus truck freight boxes about eight feet long cant go UPS Both ships look absolutely gorgeous catalog photos Im sure perform well look complete info contact Tony Arnoux 1744 NW 82 Ave Miami FL 33126 nice Roke catalog also includes Scale accessor ics like spoilers wing joiners retracts decals seats can ordered $4 letter Canadian friend following letter sent Jack Nunn RR 1 Midhurst Ontario LOL lXO Canada driving forces Central Ontario Glider Group COGG interested comments Sep 48 Model Aviation Radio Conot Soaring Byron Blakeslee photo Hake catalog its ineur gorgeoua ASW 19T Model spans 41 meters Kit German import available $545 plus freight Tony Arnoux Miami FL Bill Llscomb about iauncn Angelo Oro nos SG-38 its maiden flight Torrey Pines CA Slope site flight perfect Closeup pilot Angelo Oronos SG 38 Plane German primary trainer used 1938 model museum quality Heres 158-in-span Super version Bernard Henwoods Stiletto design young member Englands Sheffield club holds Airfoil Eppler 193 wing area 95 sq ft Design has won contests UK Theres info column tember 1987 issue Model Aviation regarding Percentage Slot contests popular UK COOG have used format last two years major contest season very well accepted fact recent survey 68% members preferred Man-on-Man usual Thermal Duration contest has disadvantagesparticularly frequency prob lem five Out 22 same fre quency happened us year good CD can usually work things out big advan tage course virtually eliminate luck factoras winner max Out lone thermal day club thinking holding Man on-Man contest care get touch Id glad forward copy rules some ideas running successful con test another matter Canadian Soaring So ciety formed just last year kindly mentioned column will have over 200 members end year About 60% Canadian rest US other countries Again anyone wish ing have information CSS may drop line Finally am also very keen interna tional event Duration know theres lot enthusiastic support other Canadian Sailplane fliers COGO would volunteer act hosts initial event enough worldwide enthusiasm can attained Thanks letter Jack offer M-o-M rules new RC frequen cies opening up now Ive got feeling more clubs will going format enjoy kinds competition auto racing boat racing football track fieldyou name M-o-M has feeling real competition mean its like being actual race versus racing against clock Continued page 144 DISTRIBUTED BY ZJfflU83Z5111 7550 San Gaboel Road cadeo CA 93422 496-1717 *7 Giant ScaletieSheets *80 Size38Sheets *40 SIzet38Sheets *Propeller Decals inWT 6 Sheets -3 sizes Ca *Kill Markings12Sheets *Nomenclature Markings 3 Sizes -12 Sheets inBlack White copy * Letters Numbers 1234 413/16 10 Colors * Stsrs 10 Colors 11 Sizes plus Sheet OR Assorted Sizes Major Decals pass flying colors DISTRIBUTORS INQUIRIES INVITED Call Paul Major 413 525-4110 maf decals Custom decals Manufacturers ~ NORTHEAST SCREEN GRAPHICS 21 FISHER AVE. EAST LONGMEADOW MA 01028 TEL 413-5254110 1/eScale$2O 1 Scale Best Europes leading manufacturer Pilots Supply fully positional figures National Scale Champs dress pilots known apparel Accessories include Helmets les Sun Glasses Bobble Hats Baseball Caps Floppy Hats Bone Domes Oxygen Masks Maewests popular types WW WW II sports one-piece suit stripes lall colorsl NATO one-piece suit map pockets lolive greenl glider pilots turtle neck sweaters floppy hat sun glasses Standard pilot tan pants simulated leather jacket fur collar baseball cap sun glasses pilots lightest ever come painted dressed ready fly 1/ Scale 0 1 Scale 0 Plus $500 postage handling airmail Have fun 1/a Scale parachutist ram chute rip-stop nylon ready servos Takes standard flight pack makes $9000 E OrderingPius $10 asy. fast deliveryPostage Handling send phone VISA MasterCard Number AR DESIGNS 81 OLD WORKSHOPS FFORDDDERWEN e RHYL CL WYD UK e LLIS2YR January 1988 49 Bill Liscombs exquisite retract gear quarter-scale Sailpianes now available limited quantities wheel shown 3-in diameter details column 6595 6895 6475AVAILABLE AT AMERICAS6475 FINEST HOBBY SHOPS Tel 0745-53987 ease models contact runway ware soft tires tail-dragger model Scale modelers have little choice wheel placement either tread width fore aft direction since copying prototype Some Scale models have main wheels quite far aft means CG can close wheel centers especially tail-high landing CG near wheels ground-loop tendency reduced P-S 1 Mustang real problem arrangement possibility tail may too high land ing time CG now almost directly above wheel centers nose-over results Except nasty inclination main gear lo cation P-S 1 very close ideal model ing purposes best tail-draggers ground handling choosing model subject main gear lo Hoitw Horn Old Timer -i1k LRRZOs t sos cIUtodtL RD BREAKER 1941 BROOKLYN DODGER 56 cabin EWE5T* Retail 552g5INTRoDucToRY PRICE*53900 1938 Record Breaker 96 $6956 tS3SZipper 54$5336 1938 Kloud King 63 $42 36 1991 Brigidier 56 $4076 1941 5uper Qoaker 78 $72 76 1948 50 Long 50$3836 1936 Buccaneer 84 $5990 1938 Clipper MKI 72s4156 1937 DalIa/re 188 $75 16 1935 Miss America 84 $7196 1901 Playboy Sr 80 $5116 1991 Playboy Jr 54 $3116 1938 Powerhoose 89 $53 S6 1908 Sailplane 78 $8476 1938 Trenton Terror 72 $4876 1948 Ranger 06$3196 1939 Korda Wake 44 $1916 1939 Mercury 72 $5836 kits qualify 5AM events EF & N/C feature highest quality machine cut & sanded parts Superior alt Competition sheet sod strip wood wire 5 window material PtaOs orig FF hot models ore easily convertible 3ch /C KIT5 Sailpianes Electric power Gas Hobby Horn SENSOAR Glider 78 $1888 Midway Model GNOME R/G Hand Launch Glider$29t8 Jolly Models FLINGER R/G HLG 58 Span $24tt Midway Model FAST EDDIE Aerobatic /05 Elec$19tO Jolly Models ELECTRIGUS Electric Glider 05s$3258 Leisure PLAYBOY SR 67 Gear 05 Elect $3008 Astro ASTRO SPORT 37 Direct 05 Elect $2250 Leisure RASP 37 Direct 05 Electrics $2258 Midway ULTRA MK IV 86 Geared 84 EP $3900 Midway FLYING QUAKER 84 40-454 stroke $6476 Oks/Midway DENNY JR 72 Alum Cowel $6396 p*OOO 005A00U01 i 72 051 05 FULL LINE OF ELECTRIC SYSTEMS 5 Parts Avail SHIPPING & HANDLING 64 Page CATALOOUE Up $880 add $130 $208 PP/tot Gloss $881 $2000 add $225A copy witl sent $2001 $9508 add $388 free--when requested $4581 $7008 add $358 order over $7000 add $400 HOBBY HORN CA Addressees add 05 tao 15173 Moran St [At Send MO \/isa/MC#-rEmp o Bow 2212 Check allow up 30 Westminster Ca 92684 days CR clearance 714 8938311 COD Esact Charges plus $158 Hdl Cash Only [AftHcs 714 8951203] cation could deciding factors eliminates prototype consideration Wheels far forward CG can spell trouble Bob Dolly Wiseher S-221 Lapham Peak Rd Delafield WI S30J8 RC Soaring/Blakeslee Continued page 49 must also thank Jack COGG offer ing host international Duration event clubs Dash Cash cross-country race FAI-sanctioned F3H event 87 COGG knows handle international contest think will international Duration event not-too-distant future first need workable rules four five coun tries interested having go also need careful international Duration efforts dilute F3B programs F3B what exists international Sailplane competition must make sure F3B gets maximum support International Duration would specialty event RC Soaringmuch F3H CrossCountry Racing now would fill void fliers Durating dont like building planes Speed Distance tasks Which leads us next bit Whats ultimate Thermal ship Much interest international Duration contest would center what kind Sailplane would turn Out ultimate F3B Speed Distance tasks plus winch war have forced designers pretty tight box de signing Duration mind parame ters would seem opened up considerably Three general categories design can envi sioned 1 The traditional rudder/elevator polyhe dral floater Well perhaps floater apt term since talking about Windrifter polyhedral ship can move out requiredsomething like Larry Jollys 128-in-span Meteor its Eppler 205 airfoil larger polyhedral ships have de veloped Britain Open Class competi tions run 130 160 in span typically have good moving airfoil like Ep pIer 193 Dry wing loadings about mne ounces per square foot low teens Printed below letter Bernard Henwood leading designers breed Duration Sailplane Youll read what Bernard favors about big polyhedral ships 2 The modern straight-wing Thermal com petition design typified Bob Dodgsons 144 Model Aviation 124-in-span Windoong Bob has long maintained considerable justification going re sults recent Nats Windsong better all-around Duration ship because can ride out light stuff no-lift days can still cope windy conditions owing its camber-changing wing Eppler 214 airfoil good professor designed 214 specifi cally all-around Duration flying 111% thick its normal configuration has quite bit undercamber rear half tricky part designed camberchanging Raising flaps ailerons 60 takes Out undercamber produces go fast wing section fast F3B league faster what used thermal compe titions landings flaps go down 90 ai lerons go up about 30 so-called INTRODUCING NEW COLD WEATHER FRIEND YOU CAN COUNT ON TRANZMITTEN o Simple yet very effective 0 Keeps out wind cold o Will restrict hand motions o Made USA AMA modeler oFits Tx-Sturdy construct oPolyester filled nylon quilting oCotton jersey lining lD label 0Velcro closuresfastSure fit oChoose Red Blue Brt Orange AMA patch included yours well sew free NO POSTAL HANDLING FEE send patch color choice SKY-HI ENTERPRISE 422E 20th AVE COLUMBUS OHIO 43201 SATISFACTION GUARANTEED AIR WOLF EPOXY FIBERGLASS FUSELAGES TAKES MOST 50-60 MECHANICS OTHER MODELS AVAILABLE LARRY JOLLY MODEL PRODUCTS $20000 5501 WCOMO SANTA ANA CALIFORNIA 92703 714 826-6861 American Eaglet first light-plane receive type certificate Anercon Eaglet la ~in~1ts carry two ooered byan LTSO 05 notorpeople 45 horsepower oluchconosPre-pdinLisureaThe Eaglet conplote flight systen 0603A 1930s contemporary Aeronca C3 Taylor Cubs Health Parasol Pietenpol Air Camper Eaglets gentle flying characteristics reason flying schools day chose standard instructional aircraft Leisures easy-to-build scale model kit Ameri can Eaglet 05 electric powered shares gentle flight characteristics full scale aircraft Scaled 18 inches-to-foot model features span 62 inches wing area 571 square inches Its lightweight structure 4041 oz flying weight allows low wing loading 104 ounces per square foot combined Leisure flight system turning 11 x 5 prop flight performance spectacular Takeoff occurs after 20 foot ground roll climb-out brisk model has thermaled moderate lift conditions Gentle landings breeze Scale details documentation included plans make scale contest winner aJree copy Leisures new full color catalog send stamped self-addressed business sized envelope Leisure Electronics Inc 22971 Thron Way Unit B bsguna Hills CA 92653 Leisure crow configuration butterfly call in Europe effective method descending quickly building up speed Bob doesnt advocate ballasting Windsong because can handle normal winds surfaces raised reflexed bit some top fliers use ballast Surprising may sound Windsong relatively lightly loaded plane weighs 64 69 oz wing loading nine ounces per square foot So see planes categories two really have about similar loadings 3 current breed F3B designs Its fact planes designed launch off superstrong winches fly very fast Speed Distance tasks precisely because planes such fast efficient machines can cover huge amount ground looking lift climb smartly find typical F3B ship about 120-in span loading 12 14 oz per sq ft Quabeck air foils have popular past few years new scene 87 RG 15 section developed Rolf Girsberger Swiss team manager Achmer Con trary what shown earlier three-views Reinhard Liese used RG-15 worldchamps-winning Epsilon said improve ment Speed going Quabeck Girsberger sections same order magnitude went Eppler 193 Quabeck like 15 sec international Duration contest specify braided nylon line perhaps standard winch horrors F3B ships would give up some mind-boggling zoom launches would still outlaunch other types owing superior speed line theyd still zoom pretty well As point reference six-minute F3B Du ration task pretty much automatic decent weather guys launching 250 ters international Duration event would have longer slots flight times 10 15 minutes would new experience body Well theres three points view ulti mate Thermal ship Im sure have own ideas said above thats what would make event interesting exciting youd like write tell us about kil ler design Id pleased print views British Open Class Thermal soarers have corresponding Bernard Henwood recently sent lengthy letter some interesting parts pertaining all-out Thermal soarers seems Brits have ahead us going large ships Thermal competitions regularly use planes re serve cross-country comparable size Sagitta-XC UMP Comet Bernard edits Sheffield Club newsletter very classy publication way recently volunteered take over George Stringwell editorship Soarers publication BARCS British Association Radio Control Soarerssame NSS Bernard designer Stiletto series Thermal ships have wingspans ranging 100 150 have built mostly withoutailerons An unusual feature Bernards planes Sheffield System wing construction uses aluminum tubes spars built-up construc tion Depending size wing two three tubes used parallel root tubes held together flat aluminum plates drilled accept three tubes used root system tapers two half way poly break uses tube tip section tubes used accept wing rod also hold ballast ingeni ous system some excerpts Bernards letter Since beginning 1984 Stilettos have gained over 80 places Open-entry competi tions including 24 places National-level com petitions 12 first places majority places have won 136-in 145-in versions BARCS league events 100-in version has also done well both Open 100-inch events well Sportsman task double- triple-task events held Nats year Obviously have done myself despite absence plans time five Stilettos being flown BARCS Northern League 1985 four top eight places Northern League went Stilettos subsequently flown second place League championship Ironically although criticize 158-in Super Stiletto being too big has given convincing League win flew Out both 15-minute flyoff slotsleaving nearest competitor over 10 minutes behind total time am still state euphoria after winning Open Nats Basically think OK flown large open areas such airfields abil ity cover ground seen long way off important other hand com petitions flown school fields bounded buildings and/or trees well Continued page 148 January 1988 145 electric scale American Eaglet tAw ~5ATLYTE C ceent free fight fGoorO5 2 2 tada c* iigspan 8aWeghI 32438 oz pis te4 ba RC Soaring/Blakeslee Continued page 145 often littered goal posts Situations big planes relative lack maneuverability definite handicap suppose case horses courses last letter said would comment predominance rudder/elevator models Open competitions Basically think ab sence Speed Distance tasks removes need ultrafast precise model response longer Duration slots 15 minutes flyoff slot increases need positive stability will allow model easily flown greater heights distances greater dihedral rudder/elevator models track better aileron models E mga pilots 1 1/6 scale fully poseable 12 action pilots dressed removable fabric flight gear time No painting assembly required WWI & Civilian weigh 6 oz WWII pilot has removable Parachute Mae West weighs 8 oz Add $325 per figure P&H Calif res add sales tax Allow 10 days delivery Note Pilots can also fly 1/5 scale ships Send Check money order MGA Enterprises PO Box 626 Dept Fresno Calif 93709 148 Model Aviation light turbulence tend stabilize themselves need control inputs affect wing efficiency comparison aileron-equipped Thermal soarers less dihedral susceptible minor turbulence will track steadily themselves require flying cor rection R/E models time aile ron moved adversely affects efficiency wing section attached bad turbulenceor flying sites proxim ity buildings other obstacles makes diffi cult operate larger modelsailerons come own However 85% 95% time R/E mod els entirely adequate being surprising economy simplicity construction operation attractive majority Open competition fliers Given simplicity hand-towing sur prising Open competition flourishes F3B languishes Now comes flaps flaperons different ball game going teresting next year see will start used exercise influence Open Class designs way hope likely outcome increased model complexity would probably decline number people competing would want see Open suffer F3B syndrome ideal would lOOs become genuine Standard people compete realistic terms would less equipment competition match piloting skills Having said have schemes laid hilly flaperonned Open model just cannot resist technical/practical challenge Open competition presents Thanks interesting insights Bernard Bernard mentioned horses courses think hit nail head Different fliers will think different planes will best suited expected conditions thats what makes horse racing what testing differences opinion As outlined earlier international Duration event would likely see different types planes type might well par ticular day site fail miserably another day place Wouldnt interesting ex citing see what happens fine art thermal flying Buyers Bob Dodgsons kits already familiar fol lowing piece written Bob cluded building instructions kits informative nicely written thought Sailplaners should have opportu nity see before getting Bobs piece just want mention viewed Bobs two building videotapes strongly recommend thinking building Dodgson kit Come think foam-wing building tape Dave Banks has neat hints Sailplaner would find time money well spent rent other tape shows Dave Jake Watkins building Bobs taco-shell fuselages also very worthwhile first-time builder $15 deposit tape plus $10 shipping/handling tape $15 S&H two tapes Send $45 Bob see ad magazine address show tapes over couple club meetings send back get $30 back Such deal Incidentally spoke Al Doig just after re turned contest Richland contest won non other D Banks Al said never seen better contest flying anyone So Dave knows build winning planes knows fly too Now Mr Dodgson times have heard someone Thermal contest say always get sink time its time fly theres no lift other people seem get air times time What secrets enable some fliers find lift nearly time fly article assumes contest prop erly run sandbagging deplorable crutch small-minded unsportsmanlike competitor allowed After anyone can max flight goes up tow after seeing someone else spot lift Without doubt great Thermal fliers have gift Most skills involved however can learned four basic ingredients Thermal flying 1 Being decisive knowing prob able areas look lift given timeand having guts go 2 Being able recognize workable lift no matter weak plane passes through being seduced turbulent air workable 3 Having plane flying skills neces sary work lift efficiently possible moving out fast necessary 4 Knowing leave dying thermal push stick forward reflex flaps force plane quickiy fly out bad area rather aimlessly flounder around down air less decisive fliers often seen doing ELEVENTH ANNUAL MODEL HOBBY TRADE SHOW INDUSTRYMEMBERSONLY FRFDAYJAN8 1988 1OAM-5PM GENERAL PUBLIC RDAY JAN 9 1988 10AM 6PM GENERAL PUBLIC AY JAN 10 1988 10AM 5PM SEE tHE LAIESI PRODUCTS AND VISIT WITH MAJOR MANUFACTURERS AND DISTRIBUTORS OF MODEL AIRCRAFT MODEL ENGINES GIANT RAFFLE MODEL BOATS RADIO CONTROL SYSTEMS SHOP L CARS MODELING ACCESSORIES * POND R TRACK DESi Will1under 6-free wi adult ADMISSION Adults $500 under 13- $300 STATIC DISPLAY COMPETITION IN MANY CATEGORIES tiji iIIafL~ J ni g iIi I- iuSf rWiI U Ie7 Es]~ [e]51 intl U INTERNATIONAL MODELER SHOW OFFICE PO Box 10127 Costa Mesa CA 92627 Ph 1714 548-4700 Knowing look lift lot like playing cards best players ones keep track what cards have dealt can know what odds given time good Thermal flier watches sky other fliers very carefully trying establish probable patterns lift cycle enables him fig ure about what part sky due kick off thermal time fly Sometimes massive sink cycle killing just trying different part sky about best can general unless have sure knowledge thermal thermal-searching way downwind find thermal downwind cannot ride long because plane will soon blown limits vision find thermal flying downwind can find yourself big trouble much safer sesrch lift upwind off sides Watch closely telltale signs lift within half-mile radius field know circling hawk eagle buzzard seagulls can dead giveaway existence lift Small birds like swallows can just reliable feed small insects can become air borne thermals swallows dart ing around small section sky probably thermal Sometimes may able spot column dust debris such paper thistledown air thermal indicator suddenly find yourself climbing out tow higher usual wind conditions have probably encountered thermal Go Wind shifts another thermal indicator sudden temporary shift wind direction can indicate thermal nearby sucking air toward air suddenly warms wind dies may standing eye thermal Sometimes can see wind patterns nearby taIl grass indicate multiple circu lar wind directionsanother thermal indicator Look variations ground cover ter rain Areas dark will absorb heat faster surrounding lighter-colored areas will likely areas kick off thermals Ridges can also help thermals break loose lit tle wind slope facing sun another possi ble thermal-generating area know about old standbys such parking lots darkroofed buildings nothing else can always try Slope Soar off windward face build ing off stand tall trees Two difficult things learn Thermal flying being able recognize what lift workable best work general know thermals start ground spread out funnel shape rise funnel goes downwind rises wind also blows entire funnel downwind including base planes thermal higher you should look thermal up wind higher planes will normally have follow thermal downwind else will blow past plane will end up down side Youll want get out down air fast high working thermals seem have noticeable core hot spot usually best work flat efficient gentle circle turns Some thermals have tiny areas strong lift can best worked standing Glider its wing tip doing tight fast eight-foot-diameter circles centered hot spot way can climb Out some thermals particularly very low altitudes Gliders outstanding performers very tight thermals Other thermals seem require fly upwind climbing leg slowly verge stall quite letting plane stall whip ping around downwind turn quickly faster speed low altitudes stall false move can spell difference between max flight premature landing second half Bobs article will next months column Late news Bob Dodgson Just about send column received letter Bob enclosed such important inter esting information figured word should get out ASAP Bob wrote am really excited about Automatic Flap-Aileron Reflex Trim system described enclosed sheet works well Pixy am converting Windsong over same system three servos such simple yet effective solution rather complex problem [can hardly contain enthusiasm hope no takes offense name device am victim rather per verted sense humor couldnt help self Please Bob family magazine said sheet has diagram side explanation other wont try include diagram column because dont think would show up too well reduced version trust Bob will forgive saying controls planes first glance look like plumbers nightmare once study what everything doing its quite logical new device adds another pushrod moving part works cares following some paragraphs explanation January 1988 149 21230 flamincua Rd flathII WA 90021 206 7760067 F Dodgson Design thrilled able offer customers new effective control innovation can installed new Windsongs Camanos Pixies easily retrofitted ones already built amazing mixer designed Gary Brokaw Spokane WA innovative Windsong flier call new device Automa tic Flap-Aileron Reflex Trim simply AFART short Now first time anyone can have full-span flap aileron reflex single trim lever three servos Pixy Ca mano Windsong Aileron trim prac tical before Pixy Camano due added weight extra servo minimal space fuselage Now easily accom plished nearly zero weight gain well no increase aileron slop advantages using AFART Windsong 1 weight 1 /2-oz servo can saved 2 effective aileron differen tial can obtained because no M-1 mixer needed simple offset servo output arm can used aileron servo 3 centering precise ailerons since M-1 mixer needed since AFART effectively locks place transparent far aileron action concerned until called action flip flap trim lever reflex en tire trailing edge AFART consists simple A-in hard wood dowel cut 2 long Ca mano Pixy longer Windsong wel becomes support two belleranks normally used kits two bellcranks ]liselage hooked up aileron pushrods dowel pivots about screw rubber grommet bottom fiAselage slides slot cut W9 ply plate no actuation AFART dowel rests against back slot retained small rubberband position normal place bellcranks Actuation flap trim pulls dowel bellcranks ward thus moving both ailerons up Back Bob s explanation Adjust flap trim trim down flaps perfect neutral trim full up flaps 60 negative position Adjust AFART pushrod ailerons affected positive flaps used flaps neutral move trim lever up reflex flaps AFART pulled forward just far enough also reflex ailerons 60 like flaps Properly installed adjusted AFART should require no further service should give precise neutral reflex flap positions Since 900 flaps built-in elevator trim com pensation unbelievably effective land ing speed glide-path control Windsong fliers find rarely use aileron spoiler function provided fourth servo Good fliers however rely heavily perform ance edge can get reflexing entire trailing edge wing Now anyone can use inexpensive four-channel radio get full trailing edge re flex capability fingertipand three servos given up extra servo additional trim lever fool withalong aileron spoiler function normally used anyway have high-techers realize builders Dodgson planes have little idea what about others probably have no idea best thing send Bob SASE re quest AFART bulletin youre en close two additional stamps ask Bobs nice little catalog can go through cat alog send planes youre stronger person am hope yours have happy holiday seasonand Santa brings new radio go new Sailplane kit know will under tree Byron Blaskeslee 3134 Winnebago Dr Seda ha CO 80135 RC Electrics/Kopski Continued page 51 just some possibility profes sionally duplicated tapes will made available future materializes Ill let know right future RC Electrics col umn Earlier mentioned Keith Shaw thats hard having fight off tempta tion devote entire column works extraordinary modeler Keith outstanding showman splendid models spectacular piloting three new models him year several other favorites past total seven Electrics Keith owns total 15 new ones included Waco Taperwing Dassault Mirage III jet prop Zlin 526 Aside repeatedly flying own planes Keith sought out fly Elec tries brand-new Beyond Extra 230 Kits Available * Now Three Sizes * Kits Stand Off Scale 1/ Scale 96 wing span $20995 plus $15 shipping 30% Scale 87 wing span $19995 plus $15 shipping Scale 721h wing span $16995 plus $8 shipping R/C EXTRAS RR Box 28B Sergeant Bluff IA 51054 Cal P ceson Pre-Builts 712-943-4102 150 Model Aviation WHEEL BEARINGS Ideal Ducted Fans Shortens Takeoff Run Eliminates Axle Friction Renews Old Worn Wheel H ilizes Wheel Wheel Pa Eliminates Wheel Wobble Steadies Nose Wheel Steering THESE BRONZE-OIL WHEEL BEARINGS ARE AVAILABLE IN THREE SIZES PACKAGED FOR TWO WHEELS 5/32 DIA $200 3/16 DIA $250 1/4 DIA $325 Please add 90C postage & handling A J PRODUCTS 8470 HERITAGE DR CLARKSTON MICH 48016 313 625-5484 SEE YOUR DEALER FIRST WORLD CLASS &5$et 0prOP Tony Frackowiaks Challenge IV Kit Atlanta Kit Dash Kit Hattori Headers Pipes AMA Et PAl RC Aerobatic Specialties PO Box 388914-248-8603 Lincoindale NY 10540 Send $100 catalog
Edition: Model Aviation - 1988/01
Page Numbers: 48, 49, 144, 145, 148, 149, 150
SCALE SCENE Bill Liscomb more-or-less Scale Slope correspondent Southern Califor nia has gone manufacturing end things hope photos convey quality Bills retractsIm very impressed quarter-scale Sailpianes beautifully made aircraft-grade materials wheel pictures three inches di ameter unit can accommodate up 3 /2 inches available two sizes planes Standard-size units have three-inch-long mounting brackets planes up 10 lb Heavy-Duty jobs have six-inch mounts ships over 10 lb Standard size weighs 5 oz wheel Scale builders will course have operating retract doors wheel coming down will push open doors Bill recommends light elastic bands closing retracts can easily oper ated Pattern-type servo retract servo isnt necessary mechanism locks both Up Down positions no landing loads transmitted servo Prices $45 Standard unit $50 H-D plus ibout $3 postage directly Bill Wilshire Model Center Los Angeles CA also selling Bill knows theres huge market quarter-scale retracts growing number Scale Sailplane builders will certainly appreciate having high-quality unit like put finishing touch pride joy cost quite reasonable take close look calculate much time trou ble would involved trying make self Contact Bill 7034 Fern Place Carlsbad CA 92008 later letter Bill says cant wait till Memorial Day Scale Fun Fly Soaring Social Richland See last months column details BB Im already planning Gliders take Quarter-scale terest rise down Last Sunday seven big Gliders Torrey Pines cliff Enclosed photos Angelo Oronos SG-38 Krick kit model museum qualitynote functional seat harness pilot wears custom-made flight suit sports gold bracelet right wrist took Angelo two years complete Does look little tense photo Roke Scale kits August column some photos beautiful Roke Scale Sail plane kits rough idea what cost recently talking phone Tony Ar noux importer big beauties asked him kits hand exactly what prices should explain Tonys real job importing German auto parts bringing small number Roke kits just labor love Anyway Tony said 47-meter 15 ft 4 SB 10 41-meter 13 ft 4 ASW 19T Both $545 plus truck freight boxes about eight feet long cant go UPS Both ships look absolutely gorgeous catalog photos Im sure perform well look complete info contact Tony Arnoux 1744 NW 82 Ave Miami FL 33126 nice Roke catalog also includes Scale accessor ics like spoilers wing joiners retracts decals seats can ordered $4 letter Canadian friend following letter sent Jack Nunn RR 1 Midhurst Ontario LOL lXO Canada driving forces Central Ontario Glider Group COGG interested comments Sep 48 Model Aviation Radio Conot Soaring Byron Blakeslee photo Hake catalog its ineur gorgeoua ASW 19T Model spans 41 meters Kit German import available $545 plus freight Tony Arnoux Miami FL Bill Llscomb about iauncn Angelo Oro nos SG-38 its maiden flight Torrey Pines CA Slope site flight perfect Closeup pilot Angelo Oronos SG 38 Plane German primary trainer used 1938 model museum quality Heres 158-in-span Super version Bernard Henwoods Stiletto design young member Englands Sheffield club holds Airfoil Eppler 193 wing area 95 sq ft Design has won contests UK Theres info column tember 1987 issue Model Aviation regarding Percentage Slot contests popular UK COOG have used format last two years major contest season very well accepted fact recent survey 68% members preferred Man-on-Man usual Thermal Duration contest has disadvantagesparticularly frequency prob lem five Out 22 same fre quency happened us year good CD can usually work things out big advan tage course virtually eliminate luck factoras winner max Out lone thermal day club thinking holding Man on-Man contest care get touch Id glad forward copy rules some ideas running successful con test another matter Canadian Soaring So ciety formed just last year kindly mentioned column will have over 200 members end year About 60% Canadian rest US other countries Again anyone wish ing have information CSS may drop line Finally am also very keen interna tional event Duration know theres lot enthusiastic support other Canadian Sailplane fliers COGO would volunteer act hosts initial event enough worldwide enthusiasm can attained Thanks letter Jack offer M-o-M rules new RC frequen cies opening up now Ive got feeling more clubs will going format enjoy kinds competition auto racing boat racing football track fieldyou name M-o-M has feeling real competition mean its like being actual race versus racing against clock Continued page 144 DISTRIBUTED BY ZJfflU83Z5111 7550 San Gaboel Road cadeo CA 93422 496-1717 *7 Giant ScaletieSheets *80 Size38Sheets *40 SIzet38Sheets *Propeller Decals inWT 6 Sheets -3 sizes Ca *Kill Markings12Sheets *Nomenclature Markings 3 Sizes -12 Sheets inBlack White copy * Letters Numbers 1234 413/16 10 Colors * Stsrs 10 Colors 11 Sizes plus Sheet OR Assorted Sizes Major Decals pass flying colors DISTRIBUTORS INQUIRIES INVITED Call Paul Major 413 525-4110 maf decals Custom decals Manufacturers ~ NORTHEAST SCREEN GRAPHICS 21 FISHER AVE. EAST LONGMEADOW MA 01028 TEL 413-5254110 1/eScale$2O 1 Scale Best Europes leading manufacturer Pilots Supply fully positional figures National Scale Champs dress pilots known apparel Accessories include Helmets les Sun Glasses Bobble Hats Baseball Caps Floppy Hats Bone Domes Oxygen Masks Maewests popular types WW WW II sports one-piece suit stripes lall colorsl NATO one-piece suit map pockets lolive greenl glider pilots turtle neck sweaters floppy hat sun glasses Standard pilot tan pants simulated leather jacket fur collar baseball cap sun glasses pilots lightest ever come painted dressed ready fly 1/ Scale 0 1 Scale 0 Plus $500 postage handling airmail Have fun 1/a Scale parachutist ram chute rip-stop nylon ready servos Takes standard flight pack makes $9000 E OrderingPius $10 asy. fast deliveryPostage Handling send phone VISA MasterCard Number AR DESIGNS 81 OLD WORKSHOPS FFORDDDERWEN e RHYL CL WYD UK e LLIS2YR January 1988 49 Bill Liscombs exquisite retract gear quarter-scale Sailpianes now available limited quantities wheel shown 3-in diameter details column 6595 6895 6475AVAILABLE AT AMERICAS6475 FINEST HOBBY SHOPS Tel 0745-53987 ease models contact runway ware soft tires tail-dragger model Scale modelers have little choice wheel placement either tread width fore aft direction since copying prototype Some Scale models have main wheels quite far aft means CG can close wheel centers especially tail-high landing CG near wheels ground-loop tendency reduced P-S 1 Mustang real problem arrangement possibility tail may too high land ing time CG now almost directly above wheel centers nose-over results Except nasty inclination main gear lo cation P-S 1 very close ideal model ing purposes best tail-draggers ground handling choosing model subject main gear lo Hoitw Horn Old Timer -i1k LRRZOs t sos cIUtodtL RD BREAKER 1941 BROOKLYN DODGER 56 cabin EWE5T* Retail 552g5INTRoDucToRY PRICE*53900 1938 Record Breaker 96 $6956 tS3SZipper 54$5336 1938 Kloud King 63 $42 36 1991 Brigidier 56 $4076 1941 5uper Qoaker 78 $72 76 1948 50 Long 50$3836 1936 Buccaneer 84 $5990 1938 Clipper MKI 72s4156 1937 DalIa/re 188 $75 16 1935 Miss America 84 $7196 1901 Playboy Sr 80 $5116 1991 Playboy Jr 54 $3116 1938 Powerhoose 89 $53 S6 1908 Sailplane 78 $8476 1938 Trenton Terror 72 $4876 1948 Ranger 06$3196 1939 Korda Wake 44 $1916 1939 Mercury 72 $5836 kits qualify 5AM events EF & N/C feature highest quality machine cut & sanded parts Superior alt Competition sheet sod strip wood wire 5 window material PtaOs orig FF hot models ore easily convertible 3ch /C KIT5 Sailpianes Electric power Gas Hobby Horn SENSOAR Glider 78 $1888 Midway Model GNOME R/G Hand Launch Glider$29t8 Jolly Models FLINGER R/G HLG 58 Span $24tt Midway Model FAST EDDIE Aerobatic /05 Elec$19tO Jolly Models ELECTRIGUS Electric Glider 05s$3258 Leisure PLAYBOY SR 67 Gear 05 Elect $3008 Astro ASTRO SPORT 37 Direct 05 Elect $2250 Leisure RASP 37 Direct 05 Electrics $2258 Midway ULTRA MK IV 86 Geared 84 EP $3900 Midway FLYING QUAKER 84 40-454 stroke $6476 Oks/Midway DENNY JR 72 Alum Cowel $6396 p*OOO 005A00U01 i 72 051 05 FULL LINE OF ELECTRIC SYSTEMS 5 Parts Avail SHIPPING & HANDLING 64 Page CATALOOUE Up $880 add $130 $208 PP/tot Gloss $881 $2000 add $225A copy witl sent $2001 $9508 add $388 free--when requested $4581 $7008 add $358 order over $7000 add $400 HOBBY HORN CA Addressees add 05 tao 15173 Moran St [At Send MO \/isa/MC#-rEmp o Bow 2212 Check allow up 30 Westminster Ca 92684 days CR clearance 714 8938311 COD Esact Charges plus $158 Hdl Cash Only [AftHcs 714 8951203] cation could deciding factors eliminates prototype consideration Wheels far forward CG can spell trouble Bob Dolly Wiseher S-221 Lapham Peak Rd Delafield WI S30J8 RC Soaring/Blakeslee Continued page 49 must also thank Jack COGG offer ing host international Duration event clubs Dash Cash cross-country race FAI-sanctioned F3H event 87 COGG knows handle international contest think will international Duration event not-too-distant future first need workable rules four five coun tries interested having go also need careful international Duration efforts dilute F3B programs F3B what exists international Sailplane competition must make sure F3B gets maximum support International Duration would specialty event RC Soaringmuch F3H CrossCountry Racing now would fill void fliers Durating dont like building planes Speed Distance tasks Which leads us next bit Whats ultimate Thermal ship Much interest international Duration contest would center what kind Sailplane would turn Out ultimate F3B Speed Distance tasks plus winch war have forced designers pretty tight box de signing Duration mind parame ters would seem opened up considerably Three general categories design can envi sioned 1 The traditional rudder/elevator polyhe dral floater Well perhaps floater apt term since talking about Windrifter polyhedral ship can move out requiredsomething like Larry Jollys 128-in-span Meteor its Eppler 205 airfoil larger polyhedral ships have de veloped Britain Open Class competi tions run 130 160 in span typically have good moving airfoil like Ep pIer 193 Dry wing loadings about mne ounces per square foot low teens Printed below letter Bernard Henwood leading designers breed Duration Sailplane Youll read what Bernard favors about big polyhedral ships 2 The modern straight-wing Thermal com petition design typified Bob Dodgsons 144 Model Aviation 124-in-span Windoong Bob has long maintained considerable justification going re sults recent Nats Windsong better all-around Duration ship because can ride out light stuff no-lift days can still cope windy conditions owing its camber-changing wing Eppler 214 airfoil good professor designed 214 specifi cally all-around Duration flying 111% thick its normal configuration has quite bit undercamber rear half tricky part designed camberchanging Raising flaps ailerons 60 takes Out undercamber produces go fast wing section fast F3B league faster what used thermal compe titions landings flaps go down 90 ai lerons go up about 30 so-called INTRODUCING NEW COLD WEATHER FRIEND YOU CAN COUNT ON TRANZMITTEN o Simple yet very effective 0 Keeps out wind cold o Will restrict hand motions o Made USA AMA modeler oFits Tx-Sturdy construct oPolyester filled nylon quilting oCotton jersey lining lD label 0Velcro closuresfastSure fit oChoose Red Blue Brt Orange AMA patch included yours well sew free NO POSTAL HANDLING FEE send patch color choice SKY-HI ENTERPRISE 422E 20th AVE COLUMBUS OHIO 43201 SATISFACTION GUARANTEED AIR WOLF EPOXY FIBERGLASS FUSELAGES TAKES MOST 50-60 MECHANICS OTHER MODELS AVAILABLE LARRY JOLLY MODEL PRODUCTS $20000 5501 WCOMO SANTA ANA CALIFORNIA 92703 714 826-6861 American Eaglet first light-plane receive type certificate Anercon Eaglet la ~in~1ts carry two ooered byan LTSO 05 notorpeople 45 horsepower oluchconosPre-pdinLisureaThe Eaglet conplote flight systen 0603A 1930s contemporary Aeronca C3 Taylor Cubs Health Parasol Pietenpol Air Camper Eaglets gentle flying characteristics reason flying schools day chose standard instructional aircraft Leisures easy-to-build scale model kit Ameri can Eaglet 05 electric powered shares gentle flight characteristics full scale aircraft Scaled 18 inches-to-foot model features span 62 inches wing area 571 square inches Its lightweight structure 4041 oz flying weight allows low wing loading 104 ounces per square foot combined Leisure flight system turning 11 x 5 prop flight performance spectacular Takeoff occurs after 20 foot ground roll climb-out brisk model has thermaled moderate lift conditions Gentle landings breeze Scale details documentation included plans make scale contest winner aJree copy Leisures new full color catalog send stamped self-addressed business sized envelope Leisure Electronics Inc 22971 Thron Way Unit B bsguna Hills CA 92653 Leisure crow configuration butterfly call in Europe effective method descending quickly building up speed Bob doesnt advocate ballasting Windsong because can handle normal winds surfaces raised reflexed bit some top fliers use ballast Surprising may sound Windsong relatively lightly loaded plane weighs 64 69 oz wing loading nine ounces per square foot So see planes categories two really have about similar loadings 3 current breed F3B designs Its fact planes designed launch off superstrong winches fly very fast Speed Distance tasks precisely because planes such fast efficient machines can cover huge amount ground looking lift climb smartly find typical F3B ship about 120-in span loading 12 14 oz per sq ft Quabeck air foils have popular past few years new scene 87 RG 15 section developed Rolf Girsberger Swiss team manager Achmer Con trary what shown earlier three-views Reinhard Liese used RG-15 worldchamps-winning Epsilon said improve ment Speed going Quabeck Girsberger sections same order magnitude went Eppler 193 Quabeck like 15 sec international Duration contest specify braided nylon line perhaps standard winch horrors F3B ships would give up some mind-boggling zoom launches would still outlaunch other types owing superior speed line theyd still zoom pretty well As point reference six-minute F3B Du ration task pretty much automatic decent weather guys launching 250 ters international Duration event would have longer slots flight times 10 15 minutes would new experience body Well theres three points view ulti mate Thermal ship Im sure have own ideas said above thats what would make event interesting exciting youd like write tell us about kil ler design Id pleased print views British Open Class Thermal soarers have corresponding Bernard Henwood recently sent lengthy letter some interesting parts pertaining all-out Thermal soarers seems Brits have ahead us going large ships Thermal competitions regularly use planes re serve cross-country comparable size Sagitta-XC UMP Comet Bernard edits Sheffield Club newsletter very classy publication way recently volunteered take over George Stringwell editorship Soarers publication BARCS British Association Radio Control Soarerssame NSS Bernard designer Stiletto series Thermal ships have wingspans ranging 100 150 have built mostly withoutailerons An unusual feature Bernards planes Sheffield System wing construction uses aluminum tubes spars built-up construc tion Depending size wing two three tubes used parallel root tubes held together flat aluminum plates drilled accept three tubes used root system tapers two half way poly break uses tube tip section tubes used accept wing rod also hold ballast ingeni ous system some excerpts Bernards letter Since beginning 1984 Stilettos have gained over 80 places Open-entry competi tions including 24 places National-level com petitions 12 first places majority places have won 136-in 145-in versions BARCS league events 100-in version has also done well both Open 100-inch events well Sportsman task double- triple-task events held Nats year Obviously have done myself despite absence plans time five Stilettos being flown BARCS Northern League 1985 four top eight places Northern League went Stilettos subsequently flown second place League championship Ironically although criticize 158-in Super Stiletto being too big has given convincing League win flew Out both 15-minute flyoff slotsleaving nearest competitor over 10 minutes behind total time am still state euphoria after winning Open Nats Basically think OK flown large open areas such airfields abil ity cover ground seen long way off important other hand com petitions flown school fields bounded buildings and/or trees well Continued page 148 January 1988 145 electric scale American Eaglet tAw ~5ATLYTE C ceent free fight fGoorO5 2 2 tada c* iigspan 8aWeghI 32438 oz pis te4 ba RC Soaring/Blakeslee Continued page 145 often littered goal posts Situations big planes relative lack maneuverability definite handicap suppose case horses courses last letter said would comment predominance rudder/elevator models Open competitions Basically think ab sence Speed Distance tasks removes need ultrafast precise model response longer Duration slots 15 minutes flyoff slot increases need positive stability will allow model easily flown greater heights distances greater dihedral rudder/elevator models track better aileron models E mga pilots 1 1/6 scale fully poseable 12 action pilots dressed removable fabric flight gear time No painting assembly required WWI & Civilian weigh 6 oz WWII pilot has removable Parachute Mae West weighs 8 oz Add $325 per figure P&H Calif res add sales tax Allow 10 days delivery Note Pilots can also fly 1/5 scale ships Send Check money order MGA Enterprises PO Box 626 Dept Fresno Calif 93709 148 Model Aviation light turbulence tend stabilize themselves need control inputs affect wing efficiency comparison aileron-equipped Thermal soarers less dihedral susceptible minor turbulence will track steadily themselves require flying cor rection R/E models time aile ron moved adversely affects efficiency wing section attached bad turbulenceor flying sites proxim ity buildings other obstacles makes diffi cult operate larger modelsailerons come own However 85% 95% time R/E mod els entirely adequate being surprising economy simplicity construction operation attractive majority Open competition fliers Given simplicity hand-towing sur prising Open competition flourishes F3B languishes Now comes flaps flaperons different ball game going teresting next year see will start used exercise influence Open Class designs way hope likely outcome increased model complexity would probably decline number people competing would want see Open suffer F3B syndrome ideal would lOOs become genuine Standard people compete realistic terms would less equipment competition match piloting skills Having said have schemes laid hilly flaperonned Open model just cannot resist technical/practical challenge Open competition presents Thanks interesting insights Bernard Bernard mentioned horses courses think hit nail head Different fliers will think different planes will best suited expected conditions thats what makes horse racing what testing differences opinion As outlined earlier international Duration event would likely see different types planes type might well par ticular day site fail miserably another day place Wouldnt interesting ex citing see what happens fine art thermal flying Buyers Bob Dodgsons kits already familiar fol lowing piece written Bob cluded building instructions kits informative nicely written thought Sailplaners should have opportu nity see before getting Bobs piece just want mention viewed Bobs two building videotapes strongly recommend thinking building Dodgson kit Come think foam-wing building tape Dave Banks has neat hints Sailplaner would find time money well spent rent other tape shows Dave Jake Watkins building Bobs taco-shell fuselages also very worthwhile first-time builder $15 deposit tape plus $10 shipping/handling tape $15 S&H two tapes Send $45 Bob see ad magazine address show tapes over couple club meetings send back get $30 back Such deal Incidentally spoke Al Doig just after re turned contest Richland contest won non other D Banks Al said never seen better contest flying anyone So Dave knows build winning planes knows fly too Now Mr Dodgson times have heard someone Thermal contest say always get sink time its time fly theres no lift other people seem get air times time What secrets enable some fliers find lift nearly time fly article assumes contest prop erly run sandbagging deplorable crutch small-minded unsportsmanlike competitor allowed After anyone can max flight goes up tow after seeing someone else spot lift Without doubt great Thermal fliers have gift Most skills involved however can learned four basic ingredients Thermal flying 1 Being decisive knowing prob able areas look lift given timeand having guts go 2 Being able recognize workable lift no matter weak plane passes through being seduced turbulent air workable 3 Having plane flying skills neces sary work lift efficiently possible moving out fast necessary 4 Knowing leave dying thermal push stick forward reflex flaps force plane quickiy fly out bad area rather aimlessly flounder around down air less decisive fliers often seen doing ELEVENTH ANNUAL MODEL HOBBY TRADE SHOW INDUSTRYMEMBERSONLY FRFDAYJAN8 1988 1OAM-5PM GENERAL PUBLIC RDAY JAN 9 1988 10AM 6PM GENERAL PUBLIC AY JAN 10 1988 10AM 5PM SEE tHE LAIESI PRODUCTS AND VISIT WITH MAJOR MANUFACTURERS AND DISTRIBUTORS OF MODEL AIRCRAFT MODEL ENGINES GIANT RAFFLE MODEL BOATS RADIO CONTROL SYSTEMS SHOP L CARS MODELING ACCESSORIES * POND R TRACK DESi Will1under 6-free wi adult ADMISSION Adults $500 under 13- $300 STATIC DISPLAY COMPETITION IN MANY CATEGORIES tiji iIIafL~ J ni g iIi I- iuSf rWiI U Ie7 Es]~ [e]51 intl U INTERNATIONAL MODELER SHOW OFFICE PO Box 10127 Costa Mesa CA 92627 Ph 1714 548-4700 Knowing look lift lot like playing cards best players ones keep track what cards have dealt can know what odds given time good Thermal flier watches sky other fliers very carefully trying establish probable patterns lift cycle enables him fig ure about what part sky due kick off thermal time fly Sometimes massive sink cycle killing just trying different part sky about best can general unless have sure knowledge thermal thermal-searching way downwind find thermal downwind cannot ride long because plane will soon blown limits vision find thermal flying downwind can find yourself big trouble much safer sesrch lift upwind off sides Watch closely telltale signs lift within half-mile radius field know circling hawk eagle buzzard seagulls can dead giveaway existence lift Small birds like swallows can just reliable feed small insects can become air borne thermals swallows dart ing around small section sky probably thermal Sometimes may able spot column dust debris such paper thistledown air thermal indicator suddenly find yourself climbing out tow higher usual wind conditions have probably encountered thermal Go Wind shifts another thermal indicator sudden temporary shift wind direction can indicate thermal nearby sucking air toward air suddenly warms wind dies may standing eye thermal Sometimes can see wind patterns nearby taIl grass indicate multiple circu lar wind directionsanother thermal indicator Look variations ground cover ter rain Areas dark will absorb heat faster surrounding lighter-colored areas will likely areas kick off thermals Ridges can also help thermals break loose lit tle wind slope facing sun another possi ble thermal-generating area know about old standbys such parking lots darkroofed buildings nothing else can always try Slope Soar off windward face build ing off stand tall trees Two difficult things learn Thermal flying being able recognize what lift workable best work general know thermals start ground spread out funnel shape rise funnel goes downwind rises wind also blows entire funnel downwind including base planes thermal higher you should look thermal up wind higher planes will normally have follow thermal downwind else will blow past plane will end up down side Youll want get out down air fast high working thermals seem have noticeable core hot spot usually best work flat efficient gentle circle turns Some thermals have tiny areas strong lift can best worked standing Glider its wing tip doing tight fast eight-foot-diameter circles centered hot spot way can climb Out some thermals particularly very low altitudes Gliders outstanding performers very tight thermals Other thermals seem require fly upwind climbing leg slowly verge stall quite letting plane stall whip ping around downwind turn quickly faster speed low altitudes stall false move can spell difference between max flight premature landing second half Bobs article will next months column Late news Bob Dodgson Just about send column received letter Bob enclosed such important inter esting information figured word should get out ASAP Bob wrote am really excited about Automatic Flap-Aileron Reflex Trim system described enclosed sheet works well Pixy am converting Windsong over same system three servos such simple yet effective solution rather complex problem [can hardly contain enthusiasm hope no takes offense name device am victim rather per verted sense humor couldnt help self Please Bob family magazine said sheet has diagram side explanation other wont try include diagram column because dont think would show up too well reduced version trust Bob will forgive saying controls planes first glance look like plumbers nightmare once study what everything doing its quite logical new device adds another pushrod moving part works cares following some paragraphs explanation January 1988 149 21230 flamincua Rd flathII WA 90021 206 7760067 F Dodgson Design thrilled able offer customers new effective control innovation can installed new Windsongs Camanos Pixies easily retrofitted ones already built amazing mixer designed Gary Brokaw Spokane WA innovative Windsong flier call new device Automa tic Flap-Aileron Reflex Trim simply AFART short Now first time anyone can have full-span flap aileron reflex single trim lever three servos Pixy Ca mano Windsong Aileron trim prac tical before Pixy Camano due added weight extra servo minimal space fuselage Now easily accom plished nearly zero weight gain well no increase aileron slop advantages using AFART Windsong 1 weight 1 /2-oz servo can saved 2 effective aileron differen tial can obtained because no M-1 mixer needed simple offset servo output arm can used aileron servo 3 centering precise ailerons since M-1 mixer needed since AFART effectively locks place transparent far aileron action concerned until called action flip flap trim lever reflex en tire trailing edge AFART consists simple A-in hard wood dowel cut 2 long Ca mano Pixy longer Windsong wel becomes support two belleranks normally used kits two bellcranks ]liselage hooked up aileron pushrods dowel pivots about screw rubber grommet bottom fiAselage slides slot cut W9 ply plate no actuation AFART dowel rests against back slot retained small rubberband position normal place bellcranks Actuation flap trim pulls dowel bellcranks ward thus moving both ailerons up Back Bob s explanation Adjust flap trim trim down flaps perfect neutral trim full up flaps 60 negative position Adjust AFART pushrod ailerons affected positive flaps used flaps neutral move trim lever up reflex flaps AFART pulled forward just far enough also reflex ailerons 60 like flaps Properly installed adjusted AFART should require no further service should give precise neutral reflex flap positions Since 900 flaps built-in elevator trim com pensation unbelievably effective land ing speed glide-path control Windsong fliers find rarely use aileron spoiler function provided fourth servo Good fliers however rely heavily perform ance edge can get reflexing entire trailing edge wing Now anyone can use inexpensive four-channel radio get full trailing edge re flex capability fingertipand three servos given up extra servo additional trim lever fool withalong aileron spoiler function normally used anyway have high-techers realize builders Dodgson planes have little idea what about others probably have no idea best thing send Bob SASE re quest AFART bulletin youre en close two additional stamps ask Bobs nice little catalog can go through cat alog send planes youre stronger person am hope yours have happy holiday seasonand Santa brings new radio go new Sailplane kit know will under tree Byron Blaskeslee 3134 Winnebago Dr Seda ha CO 80135 RC Electrics/Kopski Continued page 51 just some possibility profes sionally duplicated tapes will made available future materializes Ill let know right future RC Electrics col umn Earlier mentioned Keith Shaw thats hard having fight off tempta tion devote entire column works extraordinary modeler Keith outstanding showman splendid models spectacular piloting three new models him year several other favorites past total seven Electrics Keith owns total 15 new ones included Waco Taperwing Dassault Mirage III jet prop Zlin 526 Aside repeatedly flying own planes Keith sought out fly Elec tries brand-new Beyond Extra 230 Kits Available * Now Three Sizes * Kits Stand Off Scale 1/ Scale 96 wing span $20995 plus $15 shipping 30% Scale 87 wing span $19995 plus $15 shipping Scale 721h wing span $16995 plus $8 shipping R/C EXTRAS RR Box 28B Sergeant Bluff IA 51054 Cal P ceson Pre-Builts 712-943-4102 150 Model Aviation WHEEL BEARINGS Ideal Ducted Fans Shortens Takeoff Run Eliminates Axle Friction Renews Old Worn Wheel H ilizes Wheel Wheel Pa Eliminates Wheel Wobble Steadies Nose Wheel Steering THESE BRONZE-OIL WHEEL BEARINGS ARE AVAILABLE IN THREE SIZES PACKAGED FOR TWO WHEELS 5/32 DIA $200 3/16 DIA $250 1/4 DIA $325 Please add 90C postage & handling A J PRODUCTS 8470 HERITAGE DR CLARKSTON MICH 48016 313 625-5484 SEE YOUR DEALER FIRST WORLD CLASS &5$et 0prOP Tony Frackowiaks Challenge IV Kit Atlanta Kit Dash Kit Hattori Headers Pipes AMA Et PAl RC Aerobatic Specialties PO Box 388914-248-8603 Lincoindale NY 10540 Send $100 catalog
Edition: Model Aviation - 1988/01
Page Numbers: 48, 49, 144, 145, 148, 149, 150
SCALE SCENE Bill Liscomb more-or-less Scale Slope correspondent Southern Califor nia has gone manufacturing end things hope photos convey quality Bills retractsIm very impressed quarter-scale Sailpianes beautifully made aircraft-grade materials wheel pictures three inches di ameter unit can accommodate up 3 /2 inches available two sizes planes Standard-size units have three-inch-long mounting brackets planes up 10 lb Heavy-Duty jobs have six-inch mounts ships over 10 lb Standard size weighs 5 oz wheel Scale builders will course have operating retract doors wheel coming down will push open doors Bill recommends light elastic bands closing retracts can easily oper ated Pattern-type servo retract servo isnt necessary mechanism locks both Up Down positions no landing loads transmitted servo Prices $45 Standard unit $50 H-D plus ibout $3 postage directly Bill Wilshire Model Center Los Angeles CA also selling Bill knows theres huge market quarter-scale retracts growing number Scale Sailplane builders will certainly appreciate having high-quality unit like put finishing touch pride joy cost quite reasonable take close look calculate much time trou ble would involved trying make self Contact Bill 7034 Fern Place Carlsbad CA 92008 later letter Bill says cant wait till Memorial Day Scale Fun Fly Soaring Social Richland See last months column details BB Im already planning Gliders take Quarter-scale terest rise down Last Sunday seven big Gliders Torrey Pines cliff Enclosed photos Angelo Oronos SG-38 Krick kit model museum qualitynote functional seat harness pilot wears custom-made flight suit sports gold bracelet right wrist took Angelo two years complete Does look little tense photo Roke Scale kits August column some photos beautiful Roke Scale Sail plane kits rough idea what cost recently talking phone Tony Ar noux importer big beauties asked him kits hand exactly what prices should explain Tonys real job importing German auto parts bringing small number Roke kits just labor love Anyway Tony said 47-meter 15 ft 4 SB 10 41-meter 13 ft 4 ASW 19T Both $545 plus truck freight boxes about eight feet long cant go UPS Both ships look absolutely gorgeous catalog photos Im sure perform well look complete info contact Tony Arnoux 1744 NW 82 Ave Miami FL 33126 nice Roke catalog also includes Scale accessor ics like spoilers wing joiners retracts decals seats can ordered $4 letter Canadian friend following letter sent Jack Nunn RR 1 Midhurst Ontario LOL lXO Canada driving forces Central Ontario Glider Group COGG interested comments Sep 48 Model Aviation Radio Conot Soaring Byron Blakeslee photo Hake catalog its ineur gorgeoua ASW 19T Model spans 41 meters Kit German import available $545 plus freight Tony Arnoux Miami FL Bill Llscomb about iauncn Angelo Oro nos SG-38 its maiden flight Torrey Pines CA Slope site flight perfect Closeup pilot Angelo Oronos SG 38 Plane German primary trainer used 1938 model museum quality Heres 158-in-span Super version Bernard Henwoods Stiletto design young member Englands Sheffield club holds Airfoil Eppler 193 wing area 95 sq ft Design has won contests UK Theres info column tember 1987 issue Model Aviation regarding Percentage Slot contests popular UK COOG have used format last two years major contest season very well accepted fact recent survey 68% members preferred Man-on-Man usual Thermal Duration contest has disadvantagesparticularly frequency prob lem five Out 22 same fre quency happened us year good CD can usually work things out big advan tage course virtually eliminate luck factoras winner max Out lone thermal day club thinking holding Man on-Man contest care get touch Id glad forward copy rules some ideas running successful con test another matter Canadian Soaring So ciety formed just last year kindly mentioned column will have over 200 members end year About 60% Canadian rest US other countries Again anyone wish ing have information CSS may drop line Finally am also very keen interna tional event Duration know theres lot enthusiastic support other Canadian Sailplane fliers COGO would volunteer act hosts initial event enough worldwide enthusiasm can attained Thanks letter Jack offer M-o-M rules new RC frequen cies opening up now Ive got feeling more clubs will going format enjoy kinds competition auto racing boat racing football track fieldyou name M-o-M has feeling real competition mean its like being actual race versus racing against clock Continued page 144 DISTRIBUTED BY ZJfflU83Z5111 7550 San Gaboel Road cadeo CA 93422 496-1717 *7 Giant ScaletieSheets *80 Size38Sheets *40 SIzet38Sheets *Propeller Decals inWT 6 Sheets -3 sizes Ca *Kill Markings12Sheets *Nomenclature Markings 3 Sizes -12 Sheets inBlack White copy * Letters Numbers 1234 413/16 10 Colors * Stsrs 10 Colors 11 Sizes plus Sheet OR Assorted Sizes Major Decals pass flying colors DISTRIBUTORS INQUIRIES INVITED Call Paul Major 413 525-4110 maf decals Custom decals Manufacturers ~ NORTHEAST SCREEN GRAPHICS 21 FISHER AVE. EAST LONGMEADOW MA 01028 TEL 413-5254110 1/eScale$2O 1 Scale Best Europes leading manufacturer Pilots Supply fully positional figures National Scale Champs dress pilots known apparel Accessories include Helmets les Sun Glasses Bobble Hats Baseball Caps Floppy Hats Bone Domes Oxygen Masks Maewests popular types WW WW II sports one-piece suit stripes lall colorsl NATO one-piece suit map pockets lolive greenl glider pilots turtle neck sweaters floppy hat sun glasses Standard pilot tan pants simulated leather jacket fur collar baseball cap sun glasses pilots lightest ever come painted dressed ready fly 1/ Scale 0 1 Scale 0 Plus $500 postage handling airmail Have fun 1/a Scale parachutist ram chute rip-stop nylon ready servos Takes standard flight pack makes $9000 E OrderingPius $10 asy. fast deliveryPostage Handling send phone VISA MasterCard Number AR DESIGNS 81 OLD WORKSHOPS FFORDDDERWEN e RHYL CL WYD UK e LLIS2YR January 1988 49 Bill Liscombs exquisite retract gear quarter-scale Sailpianes now available limited quantities wheel shown 3-in diameter details column 6595 6895 6475AVAILABLE AT AMERICAS6475 FINEST HOBBY SHOPS Tel 0745-53987 ease models contact runway ware soft tires tail-dragger model Scale modelers have little choice wheel placement either tread width fore aft direction since copying prototype Some Scale models have main wheels quite far aft means CG can close wheel centers especially tail-high landing CG near wheels ground-loop tendency reduced P-S 1 Mustang real problem arrangement possibility tail may too high land ing time CG now almost directly above wheel centers nose-over results Except nasty inclination main gear lo cation P-S 1 very close ideal model ing purposes best tail-draggers ground handling choosing model subject main gear lo Hoitw Horn Old Timer -i1k LRRZOs t sos cIUtodtL RD BREAKER 1941 BROOKLYN DODGER 56 cabin EWE5T* Retail 552g5INTRoDucToRY PRICE*53900 1938 Record Breaker 96 $6956 tS3SZipper 54$5336 1938 Kloud King 63 $42 36 1991 Brigidier 56 $4076 1941 5uper Qoaker 78 $72 76 1948 50 Long 50$3836 1936 Buccaneer 84 $5990 1938 Clipper MKI 72s4156 1937 DalIa/re 188 $75 16 1935 Miss America 84 $7196 1901 Playboy Sr 80 $5116 1991 Playboy Jr 54 $3116 1938 Powerhoose 89 $53 S6 1908 Sailplane 78 $8476 1938 Trenton Terror 72 $4876 1948 Ranger 06$3196 1939 Korda Wake 44 $1916 1939 Mercury 72 $5836 kits qualify 5AM events EF & N/C feature highest quality machine cut & sanded parts Superior alt Competition sheet sod strip wood wire 5 window material PtaOs orig FF hot models ore easily convertible 3ch /C KIT5 Sailpianes Electric power Gas Hobby Horn SENSOAR Glider 78 $1888 Midway Model GNOME R/G Hand Launch Glider$29t8 Jolly Models FLINGER R/G HLG 58 Span $24tt Midway Model FAST EDDIE Aerobatic /05 Elec$19tO Jolly Models ELECTRIGUS Electric Glider 05s$3258 Leisure PLAYBOY SR 67 Gear 05 Elect $3008 Astro ASTRO SPORT 37 Direct 05 Elect $2250 Leisure RASP 37 Direct 05 Electrics $2258 Midway ULTRA MK IV 86 Geared 84 EP $3900 Midway FLYING QUAKER 84 40-454 stroke $6476 Oks/Midway DENNY JR 72 Alum Cowel $6396 p*OOO 005A00U01 i 72 051 05 FULL LINE OF ELECTRIC SYSTEMS 5 Parts Avail SHIPPING & HANDLING 64 Page CATALOOUE Up $880 add $130 $208 PP/tot Gloss $881 $2000 add $225A copy witl sent $2001 $9508 add $388 free--when requested $4581 $7008 add $358 order over $7000 add $400 HOBBY HORN CA Addressees add 05 tao 15173 Moran St [At Send MO \/isa/MC#-rEmp o Bow 2212 Check allow up 30 Westminster Ca 92684 days CR clearance 714 8938311 COD Esact Charges plus $158 Hdl Cash Only [AftHcs 714 8951203] cation could deciding factors eliminates prototype consideration Wheels far forward CG can spell trouble Bob Dolly Wiseher S-221 Lapham Peak Rd Delafield WI S30J8 RC Soaring/Blakeslee Continued page 49 must also thank Jack COGG offer ing host international Duration event clubs Dash Cash cross-country race FAI-sanctioned F3H event 87 COGG knows handle international contest think will international Duration event not-too-distant future first need workable rules four five coun tries interested having go also need careful international Duration efforts dilute F3B programs F3B what exists international Sailplane competition must make sure F3B gets maximum support International Duration would specialty event RC Soaringmuch F3H CrossCountry Racing now would fill void fliers Durating dont like building planes Speed Distance tasks Which leads us next bit Whats ultimate Thermal ship Much interest international Duration contest would center what kind Sailplane would turn Out ultimate F3B Speed Distance tasks plus winch war have forced designers pretty tight box de signing Duration mind parame ters would seem opened up considerably Three general categories design can envi sioned 1 The traditional rudder/elevator polyhe dral floater Well perhaps floater apt term since talking about Windrifter polyhedral ship can move out requiredsomething like Larry Jollys 128-in-span Meteor its Eppler 205 airfoil larger polyhedral ships have de veloped Britain Open Class competi tions run 130 160 in span typically have good moving airfoil like Ep pIer 193 Dry wing loadings about mne ounces per square foot low teens Printed below letter Bernard Henwood leading designers breed Duration Sailplane Youll read what Bernard favors about big polyhedral ships 2 The modern straight-wing Thermal com petition design typified Bob Dodgsons 144 Model Aviation 124-in-span Windoong Bob has long maintained considerable justification going re sults recent Nats Windsong better all-around Duration ship because can ride out light stuff no-lift days can still cope windy conditions owing its camber-changing wing Eppler 214 airfoil good professor designed 214 specifi cally all-around Duration flying 111% thick its normal configuration has quite bit undercamber rear half tricky part designed camberchanging Raising flaps ailerons 60 takes Out undercamber produces go fast wing section fast F3B league faster what used thermal compe titions landings flaps go down 90 ai lerons go up about 30 so-called INTRODUCING NEW COLD WEATHER FRIEND YOU CAN COUNT ON TRANZMITTEN o Simple yet very effective 0 Keeps out wind cold o Will restrict hand motions o Made USA AMA modeler oFits Tx-Sturdy construct oPolyester filled nylon quilting oCotton jersey lining lD label 0Velcro closuresfastSure fit oChoose Red Blue Brt Orange AMA patch included yours well sew free NO POSTAL HANDLING FEE send patch color choice SKY-HI ENTERPRISE 422E 20th AVE COLUMBUS OHIO 43201 SATISFACTION GUARANTEED AIR WOLF EPOXY FIBERGLASS FUSELAGES TAKES MOST 50-60 MECHANICS OTHER MODELS AVAILABLE LARRY JOLLY MODEL PRODUCTS $20000 5501 WCOMO SANTA ANA CALIFORNIA 92703 714 826-6861 American Eaglet first light-plane receive type certificate Anercon Eaglet la ~in~1ts carry two ooered byan LTSO 05 notorpeople 45 horsepower oluchconosPre-pdinLisureaThe Eaglet conplote flight systen 0603A 1930s contemporary Aeronca C3 Taylor Cubs Health Parasol Pietenpol Air Camper Eaglets gentle flying characteristics reason flying schools day chose standard instructional aircraft Leisures easy-to-build scale model kit Ameri can Eaglet 05 electric powered shares gentle flight characteristics full scale aircraft Scaled 18 inches-to-foot model features span 62 inches wing area 571 square inches Its lightweight structure 4041 oz flying weight allows low wing loading 104 ounces per square foot combined Leisure flight system turning 11 x 5 prop flight performance spectacular Takeoff occurs after 20 foot ground roll climb-out brisk model has thermaled moderate lift conditions Gentle landings breeze Scale details documentation included plans make scale contest winner aJree copy Leisures new full color catalog send stamped self-addressed business sized envelope Leisure Electronics Inc 22971 Thron Way Unit B bsguna Hills CA 92653 Leisure crow configuration butterfly call in Europe effective method descending quickly building up speed Bob doesnt advocate ballasting Windsong because can handle normal winds surfaces raised reflexed bit some top fliers use ballast Surprising may sound Windsong relatively lightly loaded plane weighs 64 69 oz wing loading nine ounces per square foot So see planes categories two really have about similar loadings 3 current breed F3B designs Its fact planes designed launch off superstrong winches fly very fast Speed Distance tasks precisely because planes such fast efficient machines can cover huge amount ground looking lift climb smartly find typical F3B ship about 120-in span loading 12 14 oz per sq ft Quabeck air foils have popular past few years new scene 87 RG 15 section developed Rolf Girsberger Swiss team manager Achmer Con trary what shown earlier three-views Reinhard Liese used RG-15 worldchamps-winning Epsilon said improve ment Speed going Quabeck Girsberger sections same order magnitude went Eppler 193 Quabeck like 15 sec international Duration contest specify braided nylon line perhaps standard winch horrors F3B ships would give up some mind-boggling zoom launches would still outlaunch other types owing superior speed line theyd still zoom pretty well As point reference six-minute F3B Du ration task pretty much automatic decent weather guys launching 250 ters international Duration event would have longer slots flight times 10 15 minutes would new experience body Well theres three points view ulti mate Thermal ship Im sure have own ideas said above thats what would make event interesting exciting youd like write tell us about kil ler design Id pleased print views British Open Class Thermal soarers have corresponding Bernard Henwood recently sent lengthy letter some interesting parts pertaining all-out Thermal soarers seems Brits have ahead us going large ships Thermal competitions regularly use planes re serve cross-country comparable size Sagitta-XC UMP Comet Bernard edits Sheffield Club newsletter very classy publication way recently volunteered take over George Stringwell editorship Soarers publication BARCS British Association Radio Control Soarerssame NSS Bernard designer Stiletto series Thermal ships have wingspans ranging 100 150 have built mostly withoutailerons An unusual feature Bernards planes Sheffield System wing construction uses aluminum tubes spars built-up construc tion Depending size wing two three tubes used parallel root tubes held together flat aluminum plates drilled accept three tubes used root system tapers two half way poly break uses tube tip section tubes used accept wing rod also hold ballast ingeni ous system some excerpts Bernards letter Since beginning 1984 Stilettos have gained over 80 places Open-entry competi tions including 24 places National-level com petitions 12 first places majority places have won 136-in 145-in versions BARCS league events 100-in version has also done well both Open 100-inch events well Sportsman task double- triple-task events held Nats year Obviously have done myself despite absence plans time five Stilettos being flown BARCS Northern League 1985 four top eight places Northern League went Stilettos subsequently flown second place League championship Ironically although criticize 158-in Super Stiletto being too big has given convincing League win flew Out both 15-minute flyoff slotsleaving nearest competitor over 10 minutes behind total time am still state euphoria after winning Open Nats Basically think OK flown large open areas such airfields abil ity cover ground seen long way off important other hand com petitions flown school fields bounded buildings and/or trees well Continued page 148 January 1988 145 electric scale American Eaglet tAw ~5ATLYTE C ceent free fight fGoorO5 2 2 tada c* iigspan 8aWeghI 32438 oz pis te4 ba RC Soaring/Blakeslee Continued page 145 often littered goal posts Situations big planes relative lack maneuverability definite handicap suppose case horses courses last letter said would comment predominance rudder/elevator models Open competitions Basically think ab sence Speed Distance tasks removes need ultrafast precise model response longer Duration slots 15 minutes flyoff slot increases need positive stability will allow model easily flown greater heights distances greater dihedral rudder/elevator models track better aileron models E mga pilots 1 1/6 scale fully poseable 12 action pilots dressed removable fabric flight gear time No painting assembly required WWI & Civilian weigh 6 oz WWII pilot has removable Parachute Mae West weighs 8 oz Add $325 per figure P&H Calif res add sales tax Allow 10 days delivery Note Pilots can also fly 1/5 scale ships Send Check money order MGA Enterprises PO Box 626 Dept Fresno Calif 93709 148 Model Aviation light turbulence tend stabilize themselves need control inputs affect wing efficiency comparison aileron-equipped Thermal soarers less dihedral susceptible minor turbulence will track steadily themselves require flying cor rection R/E models time aile ron moved adversely affects efficiency wing section attached bad turbulenceor flying sites proxim ity buildings other obstacles makes diffi cult operate larger modelsailerons come own However 85% 95% time R/E mod els entirely adequate being surprising economy simplicity construction operation attractive majority Open competition fliers Given simplicity hand-towing sur prising Open competition flourishes F3B languishes Now comes flaps flaperons different ball game going teresting next year see will start used exercise influence Open Class designs way hope likely outcome increased model complexity would probably decline number people competing would want see Open suffer F3B syndrome ideal would lOOs become genuine Standard people compete realistic terms would less equipment competition match piloting skills Having said have schemes laid hilly flaperonned Open model just cannot resist technical/practical challenge Open competition presents Thanks interesting insights Bernard Bernard mentioned horses courses think hit nail head Different fliers will think different planes will best suited expected conditions thats what makes horse racing what testing differences opinion As outlined earlier international Duration event would likely see different types planes type might well par ticular day site fail miserably another day place Wouldnt interesting ex citing see what happens fine art thermal flying Buyers Bob Dodgsons kits already familiar fol lowing piece written Bob cluded building instructions kits informative nicely written thought Sailplaners should have opportu nity see before getting Bobs piece just want mention viewed Bobs two building videotapes strongly recommend thinking building Dodgson kit Come think foam-wing building tape Dave Banks has neat hints Sailplaner would find time money well spent rent other tape shows Dave Jake Watkins building Bobs taco-shell fuselages also very worthwhile first-time builder $15 deposit tape plus $10 shipping/handling tape $15 S&H two tapes Send $45 Bob see ad magazine address show tapes over couple club meetings send back get $30 back Such deal Incidentally spoke Al Doig just after re turned contest Richland contest won non other D Banks Al said never seen better contest flying anyone So Dave knows build winning planes knows fly too Now Mr Dodgson times have heard someone Thermal contest say always get sink time its time fly theres no lift other people seem get air times time What secrets enable some fliers find lift nearly time fly article assumes contest prop erly run sandbagging deplorable crutch small-minded unsportsmanlike competitor allowed After anyone can max flight goes up tow after seeing someone else spot lift Without doubt great Thermal fliers have gift Most skills involved however can learned four basic ingredients Thermal flying 1 Being decisive knowing prob able areas look lift given timeand having guts go 2 Being able recognize workable lift no matter weak plane passes through being seduced turbulent air workable 3 Having plane flying skills neces sary work lift efficiently possible moving out fast necessary 4 Knowing leave dying thermal push stick forward reflex flaps force plane quickiy fly out bad area rather aimlessly flounder around down air less decisive fliers often seen doing ELEVENTH ANNUAL MODEL HOBBY TRADE SHOW INDUSTRYMEMBERSONLY FRFDAYJAN8 1988 1OAM-5PM GENERAL PUBLIC RDAY JAN 9 1988 10AM 6PM GENERAL PUBLIC AY JAN 10 1988 10AM 5PM SEE tHE LAIESI PRODUCTS AND VISIT WITH MAJOR MANUFACTURERS AND DISTRIBUTORS OF MODEL AIRCRAFT MODEL ENGINES GIANT RAFFLE MODEL BOATS RADIO CONTROL SYSTEMS SHOP L CARS MODELING ACCESSORIES * POND R TRACK DESi Will1under 6-free wi adult ADMISSION Adults $500 under 13- $300 STATIC DISPLAY COMPETITION IN MANY CATEGORIES tiji iIIafL~ J ni g iIi I- iuSf rWiI U Ie7 Es]~ [e]51 intl U INTERNATIONAL MODELER SHOW OFFICE PO Box 10127 Costa Mesa CA 92627 Ph 1714 548-4700 Knowing look lift lot like playing cards best players ones keep track what cards have dealt can know what odds given time good Thermal flier watches sky other fliers very carefully trying establish probable patterns lift cycle enables him fig ure about what part sky due kick off thermal time fly Sometimes massive sink cycle killing just trying different part sky about best can general unless have sure knowledge thermal thermal-searching way downwind find thermal downwind cannot ride long because plane will soon blown limits vision find thermal flying downwind can find yourself big trouble much safer sesrch lift upwind off sides Watch closely telltale signs lift within half-mile radius field know circling hawk eagle buzzard seagulls can dead giveaway existence lift Small birds like swallows can just reliable feed small insects can become air borne thermals swallows dart ing around small section sky probably thermal Sometimes may able spot column dust debris such paper thistledown air thermal indicator suddenly find yourself climbing out tow higher usual wind conditions have probably encountered thermal Go Wind shifts another thermal indicator sudden temporary shift wind direction can indicate thermal nearby sucking air toward air suddenly warms wind dies may standing eye thermal Sometimes can see wind patterns nearby taIl grass indicate multiple circu lar wind directionsanother thermal indicator Look variations ground cover ter rain Areas dark will absorb heat faster surrounding lighter-colored areas will likely areas kick off thermals Ridges can also help thermals break loose lit tle wind slope facing sun another possi ble thermal-generating area know about old standbys such parking lots darkroofed buildings nothing else can always try Slope Soar off windward face build ing off stand tall trees Two difficult things learn Thermal flying being able recognize what lift workable best work general know thermals start ground spread out funnel shape rise funnel goes downwind rises wind also blows entire funnel downwind including base planes thermal higher you should look thermal up wind higher planes will normally have follow thermal downwind else will blow past plane will end up down side Youll want get out down air fast high working thermals seem have noticeable core hot spot usually best work flat efficient gentle circle turns Some thermals have tiny areas strong lift can best worked standing Glider its wing tip doing tight fast eight-foot-diameter circles centered hot spot way can climb Out some thermals particularly very low altitudes Gliders outstanding performers very tight thermals Other thermals seem require fly upwind climbing leg slowly verge stall quite letting plane stall whip ping around downwind turn quickly faster speed low altitudes stall false move can spell difference between max flight premature landing second half Bobs article will next months column Late news Bob Dodgson Just about send column received letter Bob enclosed such important inter esting information figured word should get out ASAP Bob wrote am really excited about Automatic Flap-Aileron Reflex Trim system described enclosed sheet works well Pixy am converting Windsong over same system three servos such simple yet effective solution rather complex problem [can hardly contain enthusiasm hope no takes offense name device am victim rather per verted sense humor couldnt help self Please Bob family magazine said sheet has diagram side explanation other wont try include diagram column because dont think would show up too well reduced version trust Bob will forgive saying controls planes first glance look like plumbers nightmare once study what everything doing its quite logical new device adds another pushrod moving part works cares following some paragraphs explanation January 1988 149 21230 flamincua Rd flathII WA 90021 206 7760067 F Dodgson Design thrilled able offer customers new effective control innovation can installed new Windsongs Camanos Pixies easily retrofitted ones already built amazing mixer designed Gary Brokaw Spokane WA innovative Windsong flier call new device Automa tic Flap-Aileron Reflex Trim simply AFART short Now first time anyone can have full-span flap aileron reflex single trim lever three servos Pixy Ca mano Windsong Aileron trim prac tical before Pixy Camano due added weight extra servo minimal space fuselage Now easily accom plished nearly zero weight gain well no increase aileron slop advantages using AFART Windsong 1 weight 1 /2-oz servo can saved 2 effective aileron differen tial can obtained because no M-1 mixer needed simple offset servo output arm can used aileron servo 3 centering precise ailerons since M-1 mixer needed since AFART effectively locks place transparent far aileron action concerned until called action flip flap trim lever reflex en tire trailing edge AFART consists simple A-in hard wood dowel cut 2 long Ca mano Pixy longer Windsong wel becomes support two belleranks normally used kits two bellcranks ]liselage hooked up aileron pushrods dowel pivots about screw rubber grommet bottom fiAselage slides slot cut W9 ply plate no actuation AFART dowel rests against back slot retained small rubberband position normal place bellcranks Actuation flap trim pulls dowel bellcranks ward thus moving both ailerons up Back Bob s explanation Adjust flap trim trim down flaps perfect neutral trim full up flaps 60 negative position Adjust AFART pushrod ailerons affected positive flaps used flaps neutral move trim lever up reflex flaps AFART pulled forward just far enough also reflex ailerons 60 like flaps Properly installed adjusted AFART should require no further service should give precise neutral reflex flap positions Since 900 flaps built-in elevator trim com pensation unbelievably effective land ing speed glide-path control Windsong fliers find rarely use aileron spoiler function provided fourth servo Good fliers however rely heavily perform ance edge can get reflexing entire trailing edge wing Now anyone can use inexpensive four-channel radio get full trailing edge re flex capability fingertipand three servos given up extra servo additional trim lever fool withalong aileron spoiler function normally used anyway have high-techers realize builders Dodgson planes have little idea what about others probably have no idea best thing send Bob SASE re quest AFART bulletin youre en close two additional stamps ask Bobs nice little catalog can go through cat alog send planes youre stronger person am hope yours have happy holiday seasonand Santa brings new radio go new Sailplane kit know will under tree Byron Blaskeslee 3134 Winnebago Dr Seda ha CO 80135 RC Electrics/Kopski Continued page 51 just some possibility profes sionally duplicated tapes will made available future materializes Ill let know right future RC Electrics col umn Earlier mentioned Keith Shaw thats hard having fight off tempta tion devote entire column works extraordinary modeler Keith outstanding showman splendid models spectacular piloting three new models him year several other favorites past total seven Electrics Keith owns total 15 new ones included Waco Taperwing Dassault Mirage III jet prop Zlin 526 Aside repeatedly flying own planes Keith sought out fly Elec tries brand-new Beyond Extra 230 Kits Available * Now Three Sizes * Kits Stand Off Scale 1/ Scale 96 wing span $20995 plus $15 shipping 30% Scale 87 wing span $19995 plus $15 shipping Scale 721h wing span $16995 plus $8 shipping R/C EXTRAS RR Box 28B Sergeant Bluff IA 51054 Cal P ceson Pre-Builts 712-943-4102 150 Model Aviation WHEEL BEARINGS Ideal Ducted Fans Shortens Takeoff Run Eliminates Axle Friction Renews Old Worn Wheel H ilizes Wheel Wheel Pa Eliminates Wheel Wobble Steadies Nose Wheel Steering THESE BRONZE-OIL WHEEL BEARINGS ARE AVAILABLE IN THREE SIZES PACKAGED FOR TWO WHEELS 5/32 DIA $200 3/16 DIA $250 1/4 DIA $325 Please add 90C postage & handling A J PRODUCTS 8470 HERITAGE DR CLARKSTON MICH 48016 313 625-5484 SEE YOUR DEALER FIRST WORLD CLASS &5$et 0prOP Tony Frackowiaks Challenge IV Kit Atlanta Kit Dash Kit Hattori Headers Pipes AMA Et PAl RC Aerobatic Specialties PO Box 388914-248-8603 Lincoindale NY 10540 Send $100 catalog
Edition: Model Aviation - 1988/01
Page Numbers: 48, 49, 144, 145, 148, 149, 150
SCALE SCENE Bill Liscomb more-or-less Scale Slope correspondent Southern Califor nia has gone manufacturing end things hope photos convey quality Bills retractsIm very impressed quarter-scale Sailpianes beautifully made aircraft-grade materials wheel pictures three inches di ameter unit can accommodate up 3 /2 inches available two sizes planes Standard-size units have three-inch-long mounting brackets planes up 10 lb Heavy-Duty jobs have six-inch mounts ships over 10 lb Standard size weighs 5 oz wheel Scale builders will course have operating retract doors wheel coming down will push open doors Bill recommends light elastic bands closing retracts can easily oper ated Pattern-type servo retract servo isnt necessary mechanism locks both Up Down positions no landing loads transmitted servo Prices $45 Standard unit $50 H-D plus ibout $3 postage directly Bill Wilshire Model Center Los Angeles CA also selling Bill knows theres huge market quarter-scale retracts growing number Scale Sailplane builders will certainly appreciate having high-quality unit like put finishing touch pride joy cost quite reasonable take close look calculate much time trou ble would involved trying make self Contact Bill 7034 Fern Place Carlsbad CA 92008 later letter Bill says cant wait till Memorial Day Scale Fun Fly Soaring Social Richland See last months column details BB Im already planning Gliders take Quarter-scale terest rise down Last Sunday seven big Gliders Torrey Pines cliff Enclosed photos Angelo Oronos SG-38 Krick kit model museum qualitynote functional seat harness pilot wears custom-made flight suit sports gold bracelet right wrist took Angelo two years complete Does look little tense photo Roke Scale kits August column some photos beautiful Roke Scale Sail plane kits rough idea what cost recently talking phone Tony Ar noux importer big beauties asked him kits hand exactly what prices should explain Tonys real job importing German auto parts bringing small number Roke kits just labor love Anyway Tony said 47-meter 15 ft 4 SB 10 41-meter 13 ft 4 ASW 19T Both $545 plus truck freight boxes about eight feet long cant go UPS Both ships look absolutely gorgeous catalog photos Im sure perform well look complete info contact Tony Arnoux 1744 NW 82 Ave Miami FL 33126 nice Roke catalog also includes Scale accessor ics like spoilers wing joiners retracts decals seats can ordered $4 letter Canadian friend following letter sent Jack Nunn RR 1 Midhurst Ontario LOL lXO Canada driving forces Central Ontario Glider Group COGG interested comments Sep 48 Model Aviation Radio Conot Soaring Byron Blakeslee photo Hake catalog its ineur gorgeoua ASW 19T Model spans 41 meters Kit German import available $545 plus freight Tony Arnoux Miami FL Bill Llscomb about iauncn Angelo Oro nos SG-38 its maiden flight Torrey Pines CA Slope site flight perfect Closeup pilot Angelo Oronos SG 38 Plane German primary trainer used 1938 model museum quality Heres 158-in-span Super version Bernard Henwoods Stiletto design young member Englands Sheffield club holds Airfoil Eppler 193 wing area 95 sq ft Design has won contests UK Theres info column tember 1987 issue Model Aviation regarding Percentage Slot contests popular UK COOG have used format last two years major contest season very well accepted fact recent survey 68% members preferred Man-on-Man usual Thermal Duration contest has disadvantagesparticularly frequency prob lem five Out 22 same fre quency happened us year good CD can usually work things out big advan tage course virtually eliminate luck factoras winner max Out lone thermal day club thinking holding Man on-Man contest care get touch Id glad forward copy rules some ideas running successful con test another matter Canadian Soaring So ciety formed just last year kindly mentioned column will have over 200 members end year About 60% Canadian rest US other countries Again anyone wish ing have information CSS may drop line Finally am also very keen interna tional event Duration know theres lot enthusiastic support other Canadian Sailplane fliers COGO would volunteer act hosts initial event enough worldwide enthusiasm can attained Thanks letter Jack offer M-o-M rules new RC frequen cies opening up now Ive got feeling more clubs will going format enjoy kinds competition auto racing boat racing football track fieldyou name M-o-M has feeling real competition mean its like being actual race versus racing against clock Continued page 144 DISTRIBUTED BY ZJfflU83Z5111 7550 San Gaboel Road cadeo CA 93422 496-1717 *7 Giant ScaletieSheets *80 Size38Sheets *40 SIzet38Sheets *Propeller Decals inWT 6 Sheets -3 sizes Ca *Kill Markings12Sheets *Nomenclature Markings 3 Sizes -12 Sheets inBlack White copy * Letters Numbers 1234 413/16 10 Colors * Stsrs 10 Colors 11 Sizes plus Sheet OR Assorted Sizes Major Decals pass flying colors DISTRIBUTORS INQUIRIES INVITED Call Paul Major 413 525-4110 maf decals Custom decals Manufacturers ~ NORTHEAST SCREEN GRAPHICS 21 FISHER AVE. EAST LONGMEADOW MA 01028 TEL 413-5254110 1/eScale$2O 1 Scale Best Europes leading manufacturer Pilots Supply fully positional figures National Scale Champs dress pilots known apparel Accessories include Helmets les Sun Glasses Bobble Hats Baseball Caps Floppy Hats Bone Domes Oxygen Masks Maewests popular types WW WW II sports one-piece suit stripes lall colorsl NATO one-piece suit map pockets lolive greenl glider pilots turtle neck sweaters floppy hat sun glasses Standard pilot tan pants simulated leather jacket fur collar baseball cap sun glasses pilots lightest ever come painted dressed ready fly 1/ Scale 0 1 Scale 0 Plus $500 postage handling airmail Have fun 1/a Scale parachutist ram chute rip-stop nylon ready servos Takes standard flight pack makes $9000 E OrderingPius $10 asy. fast deliveryPostage Handling send phone VISA MasterCard Number AR DESIGNS 81 OLD WORKSHOPS FFORDDDERWEN e RHYL CL WYD UK e LLIS2YR January 1988 49 Bill Liscombs exquisite retract gear quarter-scale Sailpianes now available limited quantities wheel shown 3-in diameter details column 6595 6895 6475AVAILABLE AT AMERICAS6475 FINEST HOBBY SHOPS Tel 0745-53987 ease models contact runway ware soft tires tail-dragger model Scale modelers have little choice wheel placement either tread width fore aft direction since copying prototype Some Scale models have main wheels quite far aft means CG can close wheel centers especially tail-high landing CG near wheels ground-loop tendency reduced P-S 1 Mustang real problem arrangement possibility tail may too high land ing time CG now almost directly above wheel centers nose-over results Except nasty inclination main gear lo cation P-S 1 very close ideal model ing purposes best tail-draggers ground handling choosing model subject main gear lo Hoitw Horn Old Timer -i1k LRRZOs t sos cIUtodtL RD BREAKER 1941 BROOKLYN DODGER 56 cabin EWE5T* Retail 552g5INTRoDucToRY PRICE*53900 1938 Record Breaker 96 $6956 tS3SZipper 54$5336 1938 Kloud King 63 $42 36 1991 Brigidier 56 $4076 1941 5uper Qoaker 78 $72 76 1948 50 Long 50$3836 1936 Buccaneer 84 $5990 1938 Clipper MKI 72s4156 1937 DalIa/re 188 $75 16 1935 Miss America 84 $7196 1901 Playboy Sr 80 $5116 1991 Playboy Jr 54 $3116 1938 Powerhoose 89 $53 S6 1908 Sailplane 78 $8476 1938 Trenton Terror 72 $4876 1948 Ranger 06$3196 1939 Korda Wake 44 $1916 1939 Mercury 72 $5836 kits qualify 5AM events EF & N/C feature highest quality machine cut & sanded parts Superior alt Competition sheet sod strip wood wire 5 window material PtaOs orig FF hot models ore easily convertible 3ch /C KIT5 Sailpianes Electric power Gas Hobby Horn SENSOAR Glider 78 $1888 Midway Model GNOME R/G Hand Launch Glider$29t8 Jolly Models FLINGER R/G HLG 58 Span $24tt Midway Model FAST EDDIE Aerobatic /05 Elec$19tO Jolly Models ELECTRIGUS Electric Glider 05s$3258 Leisure PLAYBOY SR 67 Gear 05 Elect $3008 Astro ASTRO SPORT 37 Direct 05 Elect $2250 Leisure RASP 37 Direct 05 Electrics $2258 Midway ULTRA MK IV 86 Geared 84 EP $3900 Midway FLYING QUAKER 84 40-454 stroke $6476 Oks/Midway DENNY JR 72 Alum Cowel $6396 p*OOO 005A00U01 i 72 051 05 FULL LINE OF ELECTRIC SYSTEMS 5 Parts Avail SHIPPING & HANDLING 64 Page CATALOOUE Up $880 add $130 $208 PP/tot Gloss $881 $2000 add $225A copy witl sent $2001 $9508 add $388 free--when requested $4581 $7008 add $358 order over $7000 add $400 HOBBY HORN CA Addressees add 05 tao 15173 Moran St [At Send MO \/isa/MC#-rEmp o Bow 2212 Check allow up 30 Westminster Ca 92684 days CR clearance 714 8938311 COD Esact Charges plus $158 Hdl Cash Only [AftHcs 714 8951203] cation could deciding factors eliminates prototype consideration Wheels far forward CG can spell trouble Bob Dolly Wiseher S-221 Lapham Peak Rd Delafield WI S30J8 RC Soaring/Blakeslee Continued page 49 must also thank Jack COGG offer ing host international Duration event clubs Dash Cash cross-country race FAI-sanctioned F3H event 87 COGG knows handle international contest think will international Duration event not-too-distant future first need workable rules four five coun tries interested having go also need careful international Duration efforts dilute F3B programs F3B what exists international Sailplane competition must make sure F3B gets maximum support International Duration would specialty event RC Soaringmuch F3H CrossCountry Racing now would fill void fliers Durating dont like building planes Speed Distance tasks Which leads us next bit Whats ultimate Thermal ship Much interest international Duration contest would center what kind Sailplane would turn Out ultimate F3B Speed Distance tasks plus winch war have forced designers pretty tight box de signing Duration mind parame ters would seem opened up considerably Three general categories design can envi sioned 1 The traditional rudder/elevator polyhe dral floater Well perhaps floater apt term since talking about Windrifter polyhedral ship can move out requiredsomething like Larry Jollys 128-in-span Meteor its Eppler 205 airfoil larger polyhedral ships have de veloped Britain Open Class competi tions run 130 160 in span typically have good moving airfoil like Ep pIer 193 Dry wing loadings about mne ounces per square foot low teens Printed below letter Bernard Henwood leading designers breed Duration Sailplane Youll read what Bernard favors about big polyhedral ships 2 The modern straight-wing Thermal com petition design typified Bob Dodgsons 144 Model Aviation 124-in-span Windoong Bob has long maintained considerable justification going re sults recent Nats Windsong better all-around Duration ship because can ride out light stuff no-lift days can still cope windy conditions owing its camber-changing wing Eppler 214 airfoil good professor designed 214 specifi cally all-around Duration flying 111% thick its normal configuration has quite bit undercamber rear half tricky part designed camberchanging Raising flaps ailerons 60 takes Out undercamber produces go fast wing section fast F3B league faster what used thermal compe titions landings flaps go down 90 ai lerons go up about 30 so-called INTRODUCING NEW COLD WEATHER FRIEND YOU CAN COUNT ON TRANZMITTEN o Simple yet very effective 0 Keeps out wind cold o Will restrict hand motions o Made USA AMA modeler oFits Tx-Sturdy construct oPolyester filled nylon quilting oCotton jersey lining lD label 0Velcro closuresfastSure fit oChoose Red Blue Brt Orange AMA patch included yours well sew free NO POSTAL HANDLING FEE send patch color choice SKY-HI ENTERPRISE 422E 20th AVE COLUMBUS OHIO 43201 SATISFACTION GUARANTEED AIR WOLF EPOXY FIBERGLASS FUSELAGES TAKES MOST 50-60 MECHANICS OTHER MODELS AVAILABLE LARRY JOLLY MODEL PRODUCTS $20000 5501 WCOMO SANTA ANA CALIFORNIA 92703 714 826-6861 American Eaglet first light-plane receive type certificate Anercon Eaglet la ~in~1ts carry two ooered byan LTSO 05 notorpeople 45 horsepower oluchconosPre-pdinLisureaThe Eaglet conplote flight systen 0603A 1930s contemporary Aeronca C3 Taylor Cubs Health Parasol Pietenpol Air Camper Eaglets gentle flying characteristics reason flying schools day chose standard instructional aircraft Leisures easy-to-build scale model kit Ameri can Eaglet 05 electric powered shares gentle flight characteristics full scale aircraft Scaled 18 inches-to-foot model features span 62 inches wing area 571 square inches Its lightweight structure 4041 oz flying weight allows low wing loading 104 ounces per square foot combined Leisure flight system turning 11 x 5 prop flight performance spectacular Takeoff occurs after 20 foot ground roll climb-out brisk model has thermaled moderate lift conditions Gentle landings breeze Scale details documentation included plans make scale contest winner aJree copy Leisures new full color catalog send stamped self-addressed business sized envelope Leisure Electronics Inc 22971 Thron Way Unit B bsguna Hills CA 92653 Leisure crow configuration butterfly call in Europe effective method descending quickly building up speed Bob doesnt advocate ballasting Windsong because can handle normal winds surfaces raised reflexed bit some top fliers use ballast Surprising may sound Windsong relatively lightly loaded plane weighs 64 69 oz wing loading nine ounces per square foot So see planes categories two really have about similar loadings 3 current breed F3B designs Its fact planes designed launch off superstrong winches fly very fast Speed Distance tasks precisely because planes such fast efficient machines can cover huge amount ground looking lift climb smartly find typical F3B ship about 120-in span loading 12 14 oz per sq ft Quabeck air foils have popular past few years new scene 87 RG 15 section developed Rolf Girsberger Swiss team manager Achmer Con trary what shown earlier three-views Reinhard Liese used RG-15 worldchamps-winning Epsilon said improve ment Speed going Quabeck Girsberger sections same order magnitude went Eppler 193 Quabeck like 15 sec international Duration contest specify braided nylon line perhaps standard winch horrors F3B ships would give up some mind-boggling zoom launches would still outlaunch other types owing superior speed line theyd still zoom pretty well As point reference six-minute F3B Du ration task pretty much automatic decent weather guys launching 250 ters international Duration event would have longer slots flight times 10 15 minutes would new experience body Well theres three points view ulti mate Thermal ship Im sure have own ideas said above thats what would make event interesting exciting youd like write tell us about kil ler design Id pleased print views British Open Class Thermal soarers have corresponding Bernard Henwood recently sent lengthy letter some interesting parts pertaining all-out Thermal soarers seems Brits have ahead us going large ships Thermal competitions regularly use planes re serve cross-country comparable size Sagitta-XC UMP Comet Bernard edits Sheffield Club newsletter very classy publication way recently volunteered take over George Stringwell editorship Soarers publication BARCS British Association Radio Control Soarerssame NSS Bernard designer Stiletto series Thermal ships have wingspans ranging 100 150 have built mostly withoutailerons An unusual feature Bernards planes Sheffield System wing construction uses aluminum tubes spars built-up construc tion Depending size wing two three tubes used parallel root tubes held together flat aluminum plates drilled accept three tubes used root system tapers two half way poly break uses tube tip section tubes used accept wing rod also hold ballast ingeni ous system some excerpts Bernards letter Since beginning 1984 Stilettos have gained over 80 places Open-entry competi tions including 24 places National-level com petitions 12 first places majority places have won 136-in 145-in versions BARCS league events 100-in version has also done well both Open 100-inch events well Sportsman task double- triple-task events held Nats year Obviously have done myself despite absence plans time five Stilettos being flown BARCS Northern League 1985 four top eight places Northern League went Stilettos subsequently flown second place League championship Ironically although criticize 158-in Super Stiletto being too big has given convincing League win flew Out both 15-minute flyoff slotsleaving nearest competitor over 10 minutes behind total time am still state euphoria after winning Open Nats Basically think OK flown large open areas such airfields abil ity cover ground seen long way off important other hand com petitions flown school fields bounded buildings and/or trees well Continued page 148 January 1988 145 electric scale American Eaglet tAw ~5ATLYTE C ceent free fight fGoorO5 2 2 tada c* iigspan 8aWeghI 32438 oz pis te4 ba RC Soaring/Blakeslee Continued page 145 often littered goal posts Situations big planes relative lack maneuverability definite handicap suppose case horses courses last letter said would comment predominance rudder/elevator models Open competitions Basically think ab sence Speed Distance tasks removes need ultrafast precise model response longer Duration slots 15 minutes flyoff slot increases need positive stability will allow model easily flown greater heights distances greater dihedral rudder/elevator models track better aileron models E mga pilots 1 1/6 scale fully poseable 12 action pilots dressed removable fabric flight gear time No painting assembly required WWI & Civilian weigh 6 oz WWII pilot has removable Parachute Mae West weighs 8 oz Add $325 per figure P&H Calif res add sales tax Allow 10 days delivery Note Pilots can also fly 1/5 scale ships Send Check money order MGA Enterprises PO Box 626 Dept Fresno Calif 93709 148 Model Aviation light turbulence tend stabilize themselves need control inputs affect wing efficiency comparison aileron-equipped Thermal soarers less dihedral susceptible minor turbulence will track steadily themselves require flying cor rection R/E models time aile ron moved adversely affects efficiency wing section attached bad turbulenceor flying sites proxim ity buildings other obstacles makes diffi cult operate larger modelsailerons come own However 85% 95% time R/E mod els entirely adequate being surprising economy simplicity construction operation attractive majority Open competition fliers Given simplicity hand-towing sur prising Open competition flourishes F3B languishes Now comes flaps flaperons different ball game going teresting next year see will start used exercise influence Open Class designs way hope likely outcome increased model complexity would probably decline number people competing would want see Open suffer F3B syndrome ideal would lOOs become genuine Standard people compete realistic terms would less equipment competition match piloting skills Having said have schemes laid hilly flaperonned Open model just cannot resist technical/practical challenge Open competition presents Thanks interesting insights Bernard Bernard mentioned horses courses think hit nail head Different fliers will think different planes will best suited expected conditions thats what makes horse racing what testing differences opinion As outlined earlier international Duration event would likely see different types planes type might well par ticular day site fail miserably another day place Wouldnt interesting ex citing see what happens fine art thermal flying Buyers Bob Dodgsons kits already familiar fol lowing piece written Bob cluded building instructions kits informative nicely written thought Sailplaners should have opportu nity see before getting Bobs piece just want mention viewed Bobs two building videotapes strongly recommend thinking building Dodgson kit Come think foam-wing building tape Dave Banks has neat hints Sailplaner would find time money well spent rent other tape shows Dave Jake Watkins building Bobs taco-shell fuselages also very worthwhile first-time builder $15 deposit tape plus $10 shipping/handling tape $15 S&H two tapes Send $45 Bob see ad magazine address show tapes over couple club meetings send back get $30 back Such deal Incidentally spoke Al Doig just after re turned contest Richland contest won non other D Banks Al said never seen better contest flying anyone So Dave knows build winning planes knows fly too Now Mr Dodgson times have heard someone Thermal contest say always get sink time its time fly theres no lift other people seem get air times time What secrets enable some fliers find lift nearly time fly article assumes contest prop erly run sandbagging deplorable crutch small-minded unsportsmanlike competitor allowed After anyone can max flight goes up tow after seeing someone else spot lift Without doubt great Thermal fliers have gift Most skills involved however can learned four basic ingredients Thermal flying 1 Being decisive knowing prob able areas look lift given timeand having guts go 2 Being able recognize workable lift no matter weak plane passes through being seduced turbulent air workable 3 Having plane flying skills neces sary work lift efficiently possible moving out fast necessary 4 Knowing leave dying thermal push stick forward reflex flaps force plane quickiy fly out bad area rather aimlessly flounder around down air less decisive fliers often seen doing ELEVENTH ANNUAL MODEL HOBBY TRADE SHOW INDUSTRYMEMBERSONLY FRFDAYJAN8 1988 1OAM-5PM GENERAL PUBLIC RDAY JAN 9 1988 10AM 6PM GENERAL PUBLIC AY JAN 10 1988 10AM 5PM SEE tHE LAIESI PRODUCTS AND VISIT WITH MAJOR MANUFACTURERS AND DISTRIBUTORS OF MODEL AIRCRAFT MODEL ENGINES GIANT RAFFLE MODEL BOATS RADIO CONTROL SYSTEMS SHOP L CARS MODELING ACCESSORIES * POND R TRACK DESi Will1under 6-free wi adult ADMISSION Adults $500 under 13- $300 STATIC DISPLAY COMPETITION IN MANY CATEGORIES tiji iIIafL~ J ni g iIi I- iuSf rWiI U Ie7 Es]~ [e]51 intl U INTERNATIONAL MODELER SHOW OFFICE PO Box 10127 Costa Mesa CA 92627 Ph 1714 548-4700 Knowing look lift lot like playing cards best players ones keep track what cards have dealt can know what odds given time good Thermal flier watches sky other fliers very carefully trying establish probable patterns lift cycle enables him fig ure about what part sky due kick off thermal time fly Sometimes massive sink cycle killing just trying different part sky about best can general unless have sure knowledge thermal thermal-searching way downwind find thermal downwind cannot ride long because plane will soon blown limits vision find thermal flying downwind can find yourself big trouble much safer sesrch lift upwind off sides Watch closely telltale signs lift within half-mile radius field know circling hawk eagle buzzard seagulls can dead giveaway existence lift Small birds like swallows can just reliable feed small insects can become air borne thermals swallows dart ing around small section sky probably thermal Sometimes may able spot column dust debris such paper thistledown air thermal indicator suddenly find yourself climbing out tow higher usual wind conditions have probably encountered thermal Go Wind shifts another thermal indicator sudden temporary shift wind direction can indicate thermal nearby sucking air toward air suddenly warms wind dies may standing eye thermal Sometimes can see wind patterns nearby taIl grass indicate multiple circu lar wind directionsanother thermal indicator Look variations ground cover ter rain Areas dark will absorb heat faster surrounding lighter-colored areas will likely areas kick off thermals Ridges can also help thermals break loose lit tle wind slope facing sun another possi ble thermal-generating area know about old standbys such parking lots darkroofed buildings nothing else can always try Slope Soar off windward face build ing off stand tall trees Two difficult things learn Thermal flying being able recognize what lift workable best work general know thermals start ground spread out funnel shape rise funnel goes downwind rises wind also blows entire funnel downwind including base planes thermal higher you should look thermal up wind higher planes will normally have follow thermal downwind else will blow past plane will end up down side Youll want get out down air fast high working thermals seem have noticeable core hot spot usually best work flat efficient gentle circle turns Some thermals have tiny areas strong lift can best worked standing Glider its wing tip doing tight fast eight-foot-diameter circles centered hot spot way can climb Out some thermals particularly very low altitudes Gliders outstanding performers very tight thermals Other thermals seem require fly upwind climbing leg slowly verge stall quite letting plane stall whip ping around downwind turn quickly faster speed low altitudes stall false move can spell difference between max flight premature landing second half Bobs article will next months column Late news Bob Dodgson Just about send column received letter Bob enclosed such important inter esting information figured word should get out ASAP Bob wrote am really excited about Automatic Flap-Aileron Reflex Trim system described enclosed sheet works well Pixy am converting Windsong over same system three servos such simple yet effective solution rather complex problem [can hardly contain enthusiasm hope no takes offense name device am victim rather per verted sense humor couldnt help self Please Bob family magazine said sheet has diagram side explanation other wont try include diagram column because dont think would show up too well reduced version trust Bob will forgive saying controls planes first glance look like plumbers nightmare once study what everything doing its quite logical new device adds another pushrod moving part works cares following some paragraphs explanation January 1988 149 21230 flamincua Rd flathII WA 90021 206 7760067 F Dodgson Design thrilled able offer customers new effective control innovation can installed new Windsongs Camanos Pixies easily retrofitted ones already built amazing mixer designed Gary Brokaw Spokane WA innovative Windsong flier call new device Automa tic Flap-Aileron Reflex Trim simply AFART short Now first time anyone can have full-span flap aileron reflex single trim lever three servos Pixy Ca mano Windsong Aileron trim prac tical before Pixy Camano due added weight extra servo minimal space fuselage Now easily accom plished nearly zero weight gain well no increase aileron slop advantages using AFART Windsong 1 weight 1 /2-oz servo can saved 2 effective aileron differen tial can obtained because no M-1 mixer needed simple offset servo output arm can used aileron servo 3 centering precise ailerons since M-1 mixer needed since AFART effectively locks place transparent far aileron action concerned until called action flip flap trim lever reflex en tire trailing edge AFART consists simple A-in hard wood dowel cut 2 long Ca mano Pixy longer Windsong wel becomes support two belleranks normally used kits two bellcranks ]liselage hooked up aileron pushrods dowel pivots about screw rubber grommet bottom fiAselage slides slot cut W9 ply plate no actuation AFART dowel rests against back slot retained small rubberband position normal place bellcranks Actuation flap trim pulls dowel bellcranks ward thus moving both ailerons up Back Bob s explanation Adjust flap trim trim down flaps perfect neutral trim full up flaps 60 negative position Adjust AFART pushrod ailerons affected positive flaps used flaps neutral move trim lever up reflex flaps AFART pulled forward just far enough also reflex ailerons 60 like flaps Properly installed adjusted AFART should require no further service should give precise neutral reflex flap positions Since 900 flaps built-in elevator trim com pensation unbelievably effective land ing speed glide-path control Windsong fliers find rarely use aileron spoiler function provided fourth servo Good fliers however rely heavily perform ance edge can get reflexing entire trailing edge wing Now anyone can use inexpensive four-channel radio get full trailing edge re flex capability fingertipand three servos given up extra servo additional trim lever fool withalong aileron spoiler function normally used anyway have high-techers realize builders Dodgson planes have little idea what about others probably have no idea best thing send Bob SASE re quest AFART bulletin youre en close two additional stamps ask Bobs nice little catalog can go through cat alog send planes youre stronger person am hope yours have happy holiday seasonand Santa brings new radio go new Sailplane kit know will under tree Byron Blaskeslee 3134 Winnebago Dr Seda ha CO 80135 RC Electrics/Kopski Continued page 51 just some possibility profes sionally duplicated tapes will made available future materializes Ill let know right future RC Electrics col umn Earlier mentioned Keith Shaw thats hard having fight off tempta tion devote entire column works extraordinary modeler Keith outstanding showman splendid models spectacular piloting three new models him year several other favorites past total seven Electrics Keith owns total 15 new ones included Waco Taperwing Dassault Mirage III jet prop Zlin 526 Aside repeatedly flying own planes Keith sought out fly Elec tries brand-new Beyond Extra 230 Kits Available * Now Three Sizes * Kits Stand Off Scale 1/ Scale 96 wing span $20995 plus $15 shipping 30% Scale 87 wing span $19995 plus $15 shipping Scale 721h wing span $16995 plus $8 shipping R/C EXTRAS RR Box 28B Sergeant Bluff IA 51054 Cal P ceson Pre-Builts 712-943-4102 150 Model Aviation WHEEL BEARINGS Ideal Ducted Fans Shortens Takeoff Run Eliminates Axle Friction Renews Old Worn Wheel H ilizes Wheel Wheel Pa Eliminates Wheel Wobble Steadies Nose Wheel Steering THESE BRONZE-OIL WHEEL BEARINGS ARE AVAILABLE IN THREE SIZES PACKAGED FOR TWO WHEELS 5/32 DIA $200 3/16 DIA $250 1/4 DIA $325 Please add 90C postage & handling A J PRODUCTS 8470 HERITAGE DR CLARKSTON MICH 48016 313 625-5484 SEE YOUR DEALER FIRST WORLD CLASS &5$et 0prOP Tony Frackowiaks Challenge IV Kit Atlanta Kit Dash Kit Hattori Headers Pipes AMA Et PAl RC Aerobatic Specialties PO Box 388914-248-8603 Lincoindale NY 10540 Send $100 catalog
Edition: Model Aviation - 1988/01
Page Numbers: 48, 49, 144, 145, 148, 149, 150
SCALE SCENE Bill Liscomb more-or-less Scale Slope correspondent Southern Califor nia has gone manufacturing end things hope photos convey quality Bills retractsIm very impressed quarter-scale Sailpianes beautifully made aircraft-grade materials wheel pictures three inches di ameter unit can accommodate up 3 /2 inches available two sizes planes Standard-size units have three-inch-long mounting brackets planes up 10 lb Heavy-Duty jobs have six-inch mounts ships over 10 lb Standard size weighs 5 oz wheel Scale builders will course have operating retract doors wheel coming down will push open doors Bill recommends light elastic bands closing retracts can easily oper ated Pattern-type servo retract servo isnt necessary mechanism locks both Up Down positions no landing loads transmitted servo Prices $45 Standard unit $50 H-D plus ibout $3 postage directly Bill Wilshire Model Center Los Angeles CA also selling Bill knows theres huge market quarter-scale retracts growing number Scale Sailplane builders will certainly appreciate having high-quality unit like put finishing touch pride joy cost quite reasonable take close look calculate much time trou ble would involved trying make self Contact Bill 7034 Fern Place Carlsbad CA 92008 later letter Bill says cant wait till Memorial Day Scale Fun Fly Soaring Social Richland See last months column details BB Im already planning Gliders take Quarter-scale terest rise down Last Sunday seven big Gliders Torrey Pines cliff Enclosed photos Angelo Oronos SG-38 Krick kit model museum qualitynote functional seat harness pilot wears custom-made flight suit sports gold bracelet right wrist took Angelo two years complete Does look little tense photo Roke Scale kits August column some photos beautiful Roke Scale Sail plane kits rough idea what cost recently talking phone Tony Ar noux importer big beauties asked him kits hand exactly what prices should explain Tonys real job importing German auto parts bringing small number Roke kits just labor love Anyway Tony said 47-meter 15 ft 4 SB 10 41-meter 13 ft 4 ASW 19T Both $545 plus truck freight boxes about eight feet long cant go UPS Both ships look absolutely gorgeous catalog photos Im sure perform well look complete info contact Tony Arnoux 1744 NW 82 Ave Miami FL 33126 nice Roke catalog also includes Scale accessor ics like spoilers wing joiners retracts decals seats can ordered $4 letter Canadian friend following letter sent Jack Nunn RR 1 Midhurst Ontario LOL lXO Canada driving forces Central Ontario Glider Group COGG interested comments Sep 48 Model Aviation Radio Conot Soaring Byron Blakeslee photo Hake catalog its ineur gorgeoua ASW 19T Model spans 41 meters Kit German import available $545 plus freight Tony Arnoux Miami FL Bill Llscomb about iauncn Angelo Oro nos SG-38 its maiden flight Torrey Pines CA Slope site flight perfect Closeup pilot Angelo Oronos SG 38 Plane German primary trainer used 1938 model museum quality Heres 158-in-span Super version Bernard Henwoods Stiletto design young member Englands Sheffield club holds Airfoil Eppler 193 wing area 95 sq ft Design has won contests UK Theres info column tember 1987 issue Model Aviation regarding Percentage Slot contests popular UK COOG have used format last two years major contest season very well accepted fact recent survey 68% members preferred Man-on-Man usual Thermal Duration contest has disadvantagesparticularly frequency prob lem five Out 22 same fre quency happened us year good CD can usually work things out big advan tage course virtually eliminate luck factoras winner max Out lone thermal day club thinking holding Man on-Man contest care get touch Id glad forward copy rules some ideas running successful con test another matter Canadian Soaring So ciety formed just last year kindly mentioned column will have over 200 members end year About 60% Canadian rest US other countries Again anyone wish ing have information CSS may drop line Finally am also very keen interna tional event Duration know theres lot enthusiastic support other Canadian Sailplane fliers COGO would volunteer act hosts initial event enough worldwide enthusiasm can attained Thanks letter Jack offer M-o-M rules new RC frequen cies opening up now Ive got feeling more clubs will going format enjoy kinds competition auto racing boat racing football track fieldyou name M-o-M has feeling real competition mean its like being actual race versus racing against clock Continued page 144 DISTRIBUTED BY ZJfflU83Z5111 7550 San Gaboel Road cadeo CA 93422 496-1717 *7 Giant ScaletieSheets *80 Size38Sheets *40 SIzet38Sheets *Propeller Decals inWT 6 Sheets -3 sizes Ca *Kill Markings12Sheets *Nomenclature Markings 3 Sizes -12 Sheets inBlack White copy * Letters Numbers 1234 413/16 10 Colors * Stsrs 10 Colors 11 Sizes plus Sheet OR Assorted Sizes Major Decals pass flying colors DISTRIBUTORS INQUIRIES INVITED Call Paul Major 413 525-4110 maf decals Custom decals Manufacturers ~ NORTHEAST SCREEN GRAPHICS 21 FISHER AVE. EAST LONGMEADOW MA 01028 TEL 413-5254110 1/eScale$2O 1 Scale Best Europes leading manufacturer Pilots Supply fully positional figures National Scale Champs dress pilots known apparel Accessories include Helmets les Sun Glasses Bobble Hats Baseball Caps Floppy Hats Bone Domes Oxygen Masks Maewests popular types WW WW II sports one-piece suit stripes lall colorsl NATO one-piece suit map pockets lolive greenl glider pilots turtle neck sweaters floppy hat sun glasses Standard pilot tan pants simulated leather jacket fur collar baseball cap sun glasses pilots lightest ever come painted dressed ready fly 1/ Scale 0 1 Scale 0 Plus $500 postage handling airmail Have fun 1/a Scale parachutist ram chute rip-stop nylon ready servos Takes standard flight pack makes $9000 E OrderingPius $10 asy. fast deliveryPostage Handling send phone VISA MasterCard Number AR DESIGNS 81 OLD WORKSHOPS FFORDDDERWEN e RHYL CL WYD UK e LLIS2YR January 1988 49 Bill Liscombs exquisite retract gear quarter-scale Sailpianes now available limited quantities wheel shown 3-in diameter details column 6595 6895 6475AVAILABLE AT AMERICAS6475 FINEST HOBBY SHOPS Tel 0745-53987 ease models contact runway ware soft tires tail-dragger model Scale modelers have little choice wheel placement either tread width fore aft direction since copying prototype Some Scale models have main wheels quite far aft means CG can close wheel centers especially tail-high landing CG near wheels ground-loop tendency reduced P-S 1 Mustang real problem arrangement possibility tail may too high land ing time CG now almost directly above wheel centers nose-over results Except nasty inclination main gear lo cation P-S 1 very close ideal model ing purposes best tail-draggers ground handling choosing model subject main gear lo Hoitw Horn Old Timer -i1k LRRZOs t sos cIUtodtL RD BREAKER 1941 BROOKLYN DODGER 56 cabin EWE5T* Retail 552g5INTRoDucToRY PRICE*53900 1938 Record Breaker 96 $6956 tS3SZipper 54$5336 1938 Kloud King 63 $42 36 1991 Brigidier 56 $4076 1941 5uper Qoaker 78 $72 76 1948 50 Long 50$3836 1936 Buccaneer 84 $5990 1938 Clipper MKI 72s4156 1937 DalIa/re 188 $75 16 1935 Miss America 84 $7196 1901 Playboy Sr 80 $5116 1991 Playboy Jr 54 $3116 1938 Powerhoose 89 $53 S6 1908 Sailplane 78 $8476 1938 Trenton Terror 72 $4876 1948 Ranger 06$3196 1939 Korda Wake 44 $1916 1939 Mercury 72 $5836 kits qualify 5AM events EF & N/C feature highest quality machine cut & sanded parts Superior alt Competition sheet sod strip wood wire 5 window material PtaOs orig FF hot models ore easily convertible 3ch /C KIT5 Sailpianes Electric power Gas Hobby Horn SENSOAR Glider 78 $1888 Midway Model GNOME R/G Hand Launch Glider$29t8 Jolly Models FLINGER R/G HLG 58 Span $24tt Midway Model FAST EDDIE Aerobatic /05 Elec$19tO Jolly Models ELECTRIGUS Electric Glider 05s$3258 Leisure PLAYBOY SR 67 Gear 05 Elect $3008 Astro ASTRO SPORT 37 Direct 05 Elect $2250 Leisure RASP 37 Direct 05 Electrics $2258 Midway ULTRA MK IV 86 Geared 84 EP $3900 Midway FLYING QUAKER 84 40-454 stroke $6476 Oks/Midway DENNY JR 72 Alum Cowel $6396 p*OOO 005A00U01 i 72 051 05 FULL LINE OF ELECTRIC SYSTEMS 5 Parts Avail SHIPPING & HANDLING 64 Page CATALOOUE Up $880 add $130 $208 PP/tot Gloss $881 $2000 add $225A copy witl sent $2001 $9508 add $388 free--when requested $4581 $7008 add $358 order over $7000 add $400 HOBBY HORN CA Addressees add 05 tao 15173 Moran St [At Send MO \/isa/MC#-rEmp o Bow 2212 Check allow up 30 Westminster Ca 92684 days CR clearance 714 8938311 COD Esact Charges plus $158 Hdl Cash Only [AftHcs 714 8951203] cation could deciding factors eliminates prototype consideration Wheels far forward CG can spell trouble Bob Dolly Wiseher S-221 Lapham Peak Rd Delafield WI S30J8 RC Soaring/Blakeslee Continued page 49 must also thank Jack COGG offer ing host international Duration event clubs Dash Cash cross-country race FAI-sanctioned F3H event 87 COGG knows handle international contest think will international Duration event not-too-distant future first need workable rules four five coun tries interested having go also need careful international Duration efforts dilute F3B programs F3B what exists international Sailplane competition must make sure F3B gets maximum support International Duration would specialty event RC Soaringmuch F3H CrossCountry Racing now would fill void fliers Durating dont like building planes Speed Distance tasks Which leads us next bit Whats ultimate Thermal ship Much interest international Duration contest would center what kind Sailplane would turn Out ultimate F3B Speed Distance tasks plus winch war have forced designers pretty tight box de signing Duration mind parame ters would seem opened up considerably Three general categories design can envi sioned 1 The traditional rudder/elevator polyhe dral floater Well perhaps floater apt term since talking about Windrifter polyhedral ship can move out requiredsomething like Larry Jollys 128-in-span Meteor its Eppler 205 airfoil larger polyhedral ships have de veloped Britain Open Class competi tions run 130 160 in span typically have good moving airfoil like Ep pIer 193 Dry wing loadings about mne ounces per square foot low teens Printed below letter Bernard Henwood leading designers breed Duration Sailplane Youll read what Bernard favors about big polyhedral ships 2 The modern straight-wing Thermal com petition design typified Bob Dodgsons 144 Model Aviation 124-in-span Windoong Bob has long maintained considerable justification going re sults recent Nats Windsong better all-around Duration ship because can ride out light stuff no-lift days can still cope windy conditions owing its camber-changing wing Eppler 214 airfoil good professor designed 214 specifi cally all-around Duration flying 111% thick its normal configuration has quite bit undercamber rear half tricky part designed camberchanging Raising flaps ailerons 60 takes Out undercamber produces go fast wing section fast F3B league faster what used thermal compe titions landings flaps go down 90 ai lerons go up about 30 so-called INTRODUCING NEW COLD WEATHER FRIEND YOU CAN COUNT ON TRANZMITTEN o Simple yet very effective 0 Keeps out wind cold o Will restrict hand motions o Made USA AMA modeler oFits Tx-Sturdy construct oPolyester filled nylon quilting oCotton jersey lining lD label 0Velcro closuresfastSure fit oChoose Red Blue Brt Orange AMA patch included yours well sew free NO POSTAL HANDLING FEE send patch color choice SKY-HI ENTERPRISE 422E 20th AVE COLUMBUS OHIO 43201 SATISFACTION GUARANTEED AIR WOLF EPOXY FIBERGLASS FUSELAGES TAKES MOST 50-60 MECHANICS OTHER MODELS AVAILABLE LARRY JOLLY MODEL PRODUCTS $20000 5501 WCOMO SANTA ANA CALIFORNIA 92703 714 826-6861 American Eaglet first light-plane receive type certificate Anercon Eaglet la ~in~1ts carry two ooered byan LTSO 05 notorpeople 45 horsepower oluchconosPre-pdinLisureaThe Eaglet conplote flight systen 0603A 1930s contemporary Aeronca C3 Taylor Cubs Health Parasol Pietenpol Air Camper Eaglets gentle flying characteristics reason flying schools day chose standard instructional aircraft Leisures easy-to-build scale model kit Ameri can Eaglet 05 electric powered shares gentle flight characteristics full scale aircraft Scaled 18 inches-to-foot model features span 62 inches wing area 571 square inches Its lightweight structure 4041 oz flying weight allows low wing loading 104 ounces per square foot combined Leisure flight system turning 11 x 5 prop flight performance spectacular Takeoff occurs after 20 foot ground roll climb-out brisk model has thermaled moderate lift conditions Gentle landings breeze Scale details documentation included plans make scale contest winner aJree copy Leisures new full color catalog send stamped self-addressed business sized envelope Leisure Electronics Inc 22971 Thron Way Unit B bsguna Hills CA 92653 Leisure crow configuration butterfly call in Europe effective method descending quickly building up speed Bob doesnt advocate ballasting Windsong because can handle normal winds surfaces raised reflexed bit some top fliers use ballast Surprising may sound Windsong relatively lightly loaded plane weighs 64 69 oz wing loading nine ounces per square foot So see planes categories two really have about similar loadings 3 current breed F3B designs Its fact planes designed launch off superstrong winches fly very fast Speed Distance tasks precisely because planes such fast efficient machines can cover huge amount ground looking lift climb smartly find typical F3B ship about 120-in span loading 12 14 oz per sq ft Quabeck air foils have popular past few years new scene 87 RG 15 section developed Rolf Girsberger Swiss team manager Achmer Con trary what shown earlier three-views Reinhard Liese used RG-15 worldchamps-winning Epsilon said improve ment Speed going Quabeck Girsberger sections same order magnitude went Eppler 193 Quabeck like 15 sec international Duration contest specify braided nylon line perhaps standard winch horrors F3B ships would give up some mind-boggling zoom launches would still outlaunch other types owing superior speed line theyd still zoom pretty well As point reference six-minute F3B Du ration task pretty much automatic decent weather guys launching 250 ters international Duration event would have longer slots flight times 10 15 minutes would new experience body Well theres three points view ulti mate Thermal ship Im sure have own ideas said above thats what would make event interesting exciting youd like write tell us about kil ler design Id pleased print views British Open Class Thermal soarers have corresponding Bernard Henwood recently sent lengthy letter some interesting parts pertaining all-out Thermal soarers seems Brits have ahead us going large ships Thermal competitions regularly use planes re serve cross-country comparable size Sagitta-XC UMP Comet Bernard edits Sheffield Club newsletter very classy publication way recently volunteered take over George Stringwell editorship Soarers publication BARCS British Association Radio Control Soarerssame NSS Bernard designer Stiletto series Thermal ships have wingspans ranging 100 150 have built mostly withoutailerons An unusual feature Bernards planes Sheffield System wing construction uses aluminum tubes spars built-up construc tion Depending size wing two three tubes used parallel root tubes held together flat aluminum plates drilled accept three tubes used root system tapers two half way poly break uses tube tip section tubes used accept wing rod also hold ballast ingeni ous system some excerpts Bernards letter Since beginning 1984 Stilettos have gained over 80 places Open-entry competi tions including 24 places National-level com petitions 12 first places majority places have won 136-in 145-in versions BARCS league events 100-in version has also done well both Open 100-inch events well Sportsman task double- triple-task events held Nats year Obviously have done myself despite absence plans time five Stilettos being flown BARCS Northern League 1985 four top eight places Northern League went Stilettos subsequently flown second place League championship Ironically although criticize 158-in Super Stiletto being too big has given convincing League win flew Out both 15-minute flyoff slotsleaving nearest competitor over 10 minutes behind total time am still state euphoria after winning Open Nats Basically think OK flown large open areas such airfields abil ity cover ground seen long way off important other hand com petitions flown school fields bounded buildings and/or trees well Continued page 148 January 1988 145 electric scale American Eaglet tAw ~5ATLYTE C ceent free fight fGoorO5 2 2 tada c* iigspan 8aWeghI 32438 oz pis te4 ba RC Soaring/Blakeslee Continued page 145 often littered goal posts Situations big planes relative lack maneuverability definite handicap suppose case horses courses last letter said would comment predominance rudder/elevator models Open competitions Basically think ab sence Speed Distance tasks removes need ultrafast precise model response longer Duration slots 15 minutes flyoff slot increases need positive stability will allow model easily flown greater heights distances greater dihedral rudder/elevator models track better aileron models E mga pilots 1 1/6 scale fully poseable 12 action pilots dressed removable fabric flight gear time No painting assembly required WWI & Civilian weigh 6 oz WWII pilot has removable Parachute Mae West weighs 8 oz Add $325 per figure P&H Calif res add sales tax Allow 10 days delivery Note Pilots can also fly 1/5 scale ships Send Check money order MGA Enterprises PO Box 626 Dept Fresno Calif 93709 148 Model Aviation light turbulence tend stabilize themselves need control inputs affect wing efficiency comparison aileron-equipped Thermal soarers less dihedral susceptible minor turbulence will track steadily themselves require flying cor rection R/E models time aile ron moved adversely affects efficiency wing section attached bad turbulenceor flying sites proxim ity buildings other obstacles makes diffi cult operate larger modelsailerons come own However 85% 95% time R/E mod els entirely adequate being surprising economy simplicity construction operation attractive majority Open competition fliers Given simplicity hand-towing sur prising Open competition flourishes F3B languishes Now comes flaps flaperons different ball game going teresting next year see will start used exercise influence Open Class designs way hope likely outcome increased model complexity would probably decline number people competing would want see Open suffer F3B syndrome ideal would lOOs become genuine Standard people compete realistic terms would less equipment competition match piloting skills Having said have schemes laid hilly flaperonned Open model just cannot resist technical/practical challenge Open competition presents Thanks interesting insights Bernard Bernard mentioned horses courses think hit nail head Different fliers will think different planes will best suited expected conditions thats what makes horse racing what testing differences opinion As outlined earlier international Duration event would likely see different types planes type might well par ticular day site fail miserably another day place Wouldnt interesting ex citing see what happens fine art thermal flying Buyers Bob Dodgsons kits already familiar fol lowing piece written Bob cluded building instructions kits informative nicely written thought Sailplaners should have opportu nity see before getting Bobs piece just want mention viewed Bobs two building videotapes strongly recommend thinking building Dodgson kit Come think foam-wing building tape Dave Banks has neat hints Sailplaner would find time money well spent rent other tape shows Dave Jake Watkins building Bobs taco-shell fuselages also very worthwhile first-time builder $15 deposit tape plus $10 shipping/handling tape $15 S&H two tapes Send $45 Bob see ad magazine address show tapes over couple club meetings send back get $30 back Such deal Incidentally spoke Al Doig just after re turned contest Richland contest won non other D Banks Al said never seen better contest flying anyone So Dave knows build winning planes knows fly too Now Mr Dodgson times have heard someone Thermal contest say always get sink time its time fly theres no lift other people seem get air times time What secrets enable some fliers find lift nearly time fly article assumes contest prop erly run sandbagging deplorable crutch small-minded unsportsmanlike competitor allowed After anyone can max flight goes up tow after seeing someone else spot lift Without doubt great Thermal fliers have gift Most skills involved however can learned four basic ingredients Thermal flying 1 Being decisive knowing prob able areas look lift given timeand having guts go 2 Being able recognize workable lift no matter weak plane passes through being seduced turbulent air workable 3 Having plane flying skills neces sary work lift efficiently possible moving out fast necessary 4 Knowing leave dying thermal push stick forward reflex flaps force plane quickiy fly out bad area rather aimlessly flounder around down air less decisive fliers often seen doing ELEVENTH ANNUAL MODEL HOBBY TRADE SHOW INDUSTRYMEMBERSONLY FRFDAYJAN8 1988 1OAM-5PM GENERAL PUBLIC RDAY JAN 9 1988 10AM 6PM GENERAL PUBLIC AY JAN 10 1988 10AM 5PM SEE tHE LAIESI PRODUCTS AND VISIT WITH MAJOR MANUFACTURERS AND DISTRIBUTORS OF MODEL AIRCRAFT MODEL ENGINES GIANT RAFFLE MODEL BOATS RADIO CONTROL SYSTEMS SHOP L CARS MODELING ACCESSORIES * POND R TRACK DESi Will1under 6-free wi adult ADMISSION Adults $500 under 13- $300 STATIC DISPLAY COMPETITION IN MANY CATEGORIES tiji iIIafL~ J ni g iIi I- iuSf rWiI U Ie7 Es]~ [e]51 intl U INTERNATIONAL MODELER SHOW OFFICE PO Box 10127 Costa Mesa CA 92627 Ph 1714 548-4700 Knowing look lift lot like playing cards best players ones keep track what cards have dealt can know what odds given time good Thermal flier watches sky other fliers very carefully trying establish probable patterns lift cycle enables him fig ure about what part sky due kick off thermal time fly Sometimes massive sink cycle killing just trying different part sky about best can general unless have sure knowledge thermal thermal-searching way downwind find thermal downwind cannot ride long because plane will soon blown limits vision find thermal flying downwind can find yourself big trouble much safer sesrch lift upwind off sides Watch closely telltale signs lift within half-mile radius field know circling hawk eagle buzzard seagulls can dead giveaway existence lift Small birds like swallows can just reliable feed small insects can become air borne thermals swallows dart ing around small section sky probably thermal Sometimes may able spot column dust debris such paper thistledown air thermal indicator suddenly find yourself climbing out tow higher usual wind conditions have probably encountered thermal Go Wind shifts another thermal indicator sudden temporary shift wind direction can indicate thermal nearby sucking air toward air suddenly warms wind dies may standing eye thermal Sometimes can see wind patterns nearby taIl grass indicate multiple circu lar wind directionsanother thermal indicator Look variations ground cover ter rain Areas dark will absorb heat faster surrounding lighter-colored areas will likely areas kick off thermals Ridges can also help thermals break loose lit tle wind slope facing sun another possi ble thermal-generating area know about old standbys such parking lots darkroofed buildings nothing else can always try Slope Soar off windward face build ing off stand tall trees Two difficult things learn Thermal flying being able recognize what lift workable best work general know thermals start ground spread out funnel shape rise funnel goes downwind rises wind also blows entire funnel downwind including base planes thermal higher you should look thermal up wind higher planes will normally have follow thermal downwind else will blow past plane will end up down side Youll want get out down air fast high working thermals seem have noticeable core hot spot usually best work flat efficient gentle circle turns Some thermals have tiny areas strong lift can best worked standing Glider its wing tip doing tight fast eight-foot-diameter circles centered hot spot way can climb Out some thermals particularly very low altitudes Gliders outstanding performers very tight thermals Other thermals seem require fly upwind climbing leg slowly verge stall quite letting plane stall whip ping around downwind turn quickly faster speed low altitudes stall false move can spell difference between max flight premature landing second half Bobs article will next months column Late news Bob Dodgson Just about send column received letter Bob enclosed such important inter esting information figured word should get out ASAP Bob wrote am really excited about Automatic Flap-Aileron Reflex Trim system described enclosed sheet works well Pixy am converting Windsong over same system three servos such simple yet effective solution rather complex problem [can hardly contain enthusiasm hope no takes offense name device am victim rather per verted sense humor couldnt help self Please Bob family magazine said sheet has diagram side explanation other wont try include diagram column because dont think would show up too well reduced version trust Bob will forgive saying controls planes first glance look like plumbers nightmare once study what everything doing its quite logical new device adds another pushrod moving part works cares following some paragraphs explanation January 1988 149 21230 flamincua Rd flathII WA 90021 206 7760067 F Dodgson Design thrilled able offer customers new effective control innovation can installed new Windsongs Camanos Pixies easily retrofitted ones already built amazing mixer designed Gary Brokaw Spokane WA innovative Windsong flier call new device Automa tic Flap-Aileron Reflex Trim simply AFART short Now first time anyone can have full-span flap aileron reflex single trim lever three servos Pixy Ca mano Windsong Aileron trim prac tical before Pixy Camano due added weight extra servo minimal space fuselage Now easily accom plished nearly zero weight gain well no increase aileron slop advantages using AFART Windsong 1 weight 1 /2-oz servo can saved 2 effective aileron differen tial can obtained because no M-1 mixer needed simple offset servo output arm can used aileron servo 3 centering precise ailerons since M-1 mixer needed since AFART effectively locks place transparent far aileron action concerned until called action flip flap trim lever reflex en tire trailing edge AFART consists simple A-in hard wood dowel cut 2 long Ca mano Pixy longer Windsong wel becomes support two belleranks normally used kits two bellcranks ]liselage hooked up aileron pushrods dowel pivots about screw rubber grommet bottom fiAselage slides slot cut W9 ply plate no actuation AFART dowel rests against back slot retained small rubberband position normal place bellcranks Actuation flap trim pulls dowel bellcranks ward thus moving both ailerons up Back Bob s explanation Adjust flap trim trim down flaps perfect neutral trim full up flaps 60 negative position Adjust AFART pushrod ailerons affected positive flaps used flaps neutral move trim lever up reflex flaps AFART pulled forward just far enough also reflex ailerons 60 like flaps Properly installed adjusted AFART should require no further service should give precise neutral reflex flap positions Since 900 flaps built-in elevator trim com pensation unbelievably effective land ing speed glide-path control Windsong fliers find rarely use aileron spoiler function provided fourth servo Good fliers however rely heavily perform ance edge can get reflexing entire trailing edge wing Now anyone can use inexpensive four-channel radio get full trailing edge re flex capability fingertipand three servos given up extra servo additional trim lever fool withalong aileron spoiler function normally used anyway have high-techers realize builders Dodgson planes have little idea what about others probably have no idea best thing send Bob SASE re quest AFART bulletin youre en close two additional stamps ask Bobs nice little catalog can go through cat alog send planes youre stronger person am hope yours have happy holiday seasonand Santa brings new radio go new Sailplane kit know will under tree Byron Blaskeslee 3134 Winnebago Dr Seda ha CO 80135 RC Electrics/Kopski Continued page 51 just some possibility profes sionally duplicated tapes will made available future materializes Ill let know right future RC Electrics col umn Earlier mentioned Keith Shaw thats hard having fight off tempta tion devote entire column works extraordinary modeler Keith outstanding showman splendid models spectacular piloting three new models him year several other favorites past total seven Electrics Keith owns total 15 new ones included Waco Taperwing Dassault Mirage III jet prop Zlin 526 Aside repeatedly flying own planes Keith sought out fly Elec tries brand-new Beyond Extra 230 Kits Available * Now Three Sizes * Kits Stand Off Scale 1/ Scale 96 wing span $20995 plus $15 shipping 30% Scale 87 wing span $19995 plus $15 shipping Scale 721h wing span $16995 plus $8 shipping R/C EXTRAS RR Box 28B Sergeant Bluff IA 51054 Cal P ceson Pre-Builts 712-943-4102 150 Model Aviation WHEEL BEARINGS Ideal Ducted Fans Shortens Takeoff Run Eliminates Axle Friction Renews Old Worn Wheel H ilizes Wheel Wheel Pa Eliminates Wheel Wobble Steadies Nose Wheel Steering THESE BRONZE-OIL WHEEL BEARINGS ARE AVAILABLE IN THREE SIZES PACKAGED FOR TWO WHEELS 5/32 DIA $200 3/16 DIA $250 1/4 DIA $325 Please add 90C postage & handling A J PRODUCTS 8470 HERITAGE DR CLARKSTON MICH 48016 313 625-5484 SEE YOUR DEALER FIRST WORLD CLASS &5$et 0prOP Tony Frackowiaks Challenge IV Kit Atlanta Kit Dash Kit Hattori Headers Pipes AMA Et PAl RC Aerobatic Specialties PO Box 388914-248-8603 Lincoindale NY 10540 Send $100 catalog