Radio Control: Scale

NEW GLUES note Bud Wolfe Scotts dale AZ informs us suitable substitute Wilbold R/C-56 Elmers All-Purpose Tacky Glue product Borden sold local drugstores such Walgreens craft shops Bud reports seems have same proper ties RIC-56 dries clear remains flexible unlike other ordinary white glues have also found several other products similar properties Penn International Chemicals makers PlC products sold hobby shops advertises PlC Flex White glue intended adhering canopies sheet-plastic windshields thick tacky will bond porous nonpourous material dries clear re mains flexible Also found craft stores Aleenes AllPurpose Tacky Glue product Artis Inc Solvay CA can used cementing wood metal glass ceramic paper china fabrics fiber plastics foam search flexible glues came about cause Wilhold RIC-56 somewhat difficult find some parts country also because its so-called scarcity has prompted some retailers raise price four-ounce bottle Aleenes Tacky Glue found craft store about one-third cost R/C-56 lo cal hobby shop glues use cementing sheet aluminum exterior balsa framework forming imitation rivets fastening canopies clouding other blemishes have tested PlC Flex White Aleenes glues have found nearly identical RIC-56 Easy weathering Bud Wolfe also passes along another idea may old some Scale modelers new others adds little black paint final sprayed clear overcoat give model used dirty look employed technique Blohm Voss BV-141B especially helpful mellowing color its white crosses noticeably too bright Modified wheels Finding suitable wheels Scale models has always problem has driven some serious builders make own spend hours days weeks sometimes months aircrafts exterior produce ultimate realismand use wheels come hobby shop whole airplane degraded because wheels wrong size incorrect hubs too fat too thin generally lacking detail Probably conspicuous respect vintage wheels represent wrong era have incorrect hub detail Williams Brothers Golden Age wheels have wealth detail hub discs serve very well model matches era balloon-style Scale wheels have blank hubs may bless ing can adorn wheel disc de tails match photos three-view drawing necessary row hexagon-head bolts near axle find Williams Bros wheel hub material easily drilled tapped Walthers Morse hex screws found hobby shops model railroad section lo cal Ace hardware store also stocks screws displayed rotating countertop dispenser becomes matter choosing correct size best appearance documentation photos show row closely spaced rivets screws around peri phery hub disc can simulated dots R/C-56 glue applied individually round toothpick pick up small droplet glue puddle transfer drop proper location wheel may seem require exceptional manual dexterity job quite easily accomplished anyone mod elers best equipped trick form puddle RIC-56 nonabsorbtive surface such metal plastic Make puddle diameter about % /2 its too large dries up before can be complete ly used up however too small deep lets toothpick gather excess glue can lead blot being deposited models surface puddle thickens too much usable start fresh puddle rivets become same diameter Rivet size easily controlled cutting sharp tip toothpick obtain desired diameter case bad rivet wrong diam eter shape can removed reapplied instant increase diameter wheel discor 42 Model Aviation Radio Control Scale Bob Dolly Wischer 5-221 Lapham Peak Rd Delafleld WI 53018 Jeff Keletys l/scaleBede BD-8 spans 265 weighs 21 oz Power Cox TD 049 Tarno carb has also flown Astro cobalt 035 5 cells Jomar SC5 speed controller weight 28 oz Its scaled down Dennis Tapsfields -scale drawings Gary Wild used Sig kit Citabria super iao Decathlon Its engine Salto 65 tourstroke weighs 75 lb finish Coverlte Formula U Rustoleum paints Cessna 1-19 BIrd Dog Jerome Twomey started Circus Hobbies kit Its engine OS 120-cu-in twin Gemini Flap control surface corrugations Plastruct angles rivets CyA glue Lettering panel lines come Chart-Pak letters tape rather create illusion increased diameterplace circular row glue rivets tire rather hub disc mask Out portion tire will re main hlack spray color disc narrow band tire adjacent disc standpoint appearance portion black tire has become part disc documentation photo may show round wheel collar end axle fastened large cotter pin use brass tube models axle sweat-soldered over music wire axle tube should extend slightly past end axle can cross-drilled accept small cotter pin wheel collar also drilled through side axle hole en larged necessary fit tube have found tiny cotter pins wellstocked hardware store However cotter pins almost size easy make soft iron copper wire wire flattened out hammer formed loop wrapping around small drill proper diameter around music wire Pinch flat wire pliers close drill obtain typical cotter pin shape Resultinstant cotter pins size length look great model also satisfaction answering oftenasked question source tiny cotter pins Flat wire originally intended ladders model railroad boxcars another possible source material its available hobby shop Koverall While gathering data accompany photos used column always ask model weight wingspan scale finish engine displacement information about out-of-theordinary building techniques About 50% Scale modelers queried about finish will have used Super Coverite fiberglass cloth coated K&B epoxy Hobbypoxy old tradi tional silk-and-dope technique has become lost artOr nearly sobecause rarely see combination although making small comeback Sig Koverall now being used modelers last four models work shop finished Koverall re peatedly asked about procedures techniques producing quality cover job doesnt help bit explain very similar cover ing silk questioners havent used silk either Koverall provides finish good simula tion fabric-covered airplane can also Continued page 137 VIDEOLIST SALE afr ~1Basic Construction Beginners 107 Mm4995 3995 2Basic Flight Training Far Beginners 65 Mis4495 3495 3 World Model Aviation 90 Mis44 953795 4 Oshkosh Overview 55 Mis39 953495 3495 3795 19874495 MANY LIFE LIKE SCENES WITH NEW3495 4495 BROADCAST QUALITY JETS BIPES3495 CLASSICS AND LOTS OF HEAVY METAL2995 ALL FLOWN BY THE BEST IN SCALE3795 SPECIAL BUY 1987 MASTERS AT RETAIL AND GET 1984 MASTERS FOR ONLY 2795 SAVE 1400 1987 SCALE MASTERS 45 MIN 3795 FORIEGN DISTRIBUTORS WANTED BUY ANY 3 VIDEOS GET 1 FREE L fO asnas Only certified checks money orders anceoted Minimum order 510 three packages 4 Powerpoies l53 per oackage O1 shipping handlisal CT residents add 75% sales tax Prices soislect Change sithOot notice DEALER INQUIRIES INVITED farther information den n ces send SASE Nosiness Card SERMOS RIC SNAP CONNECTORS Calar Cttnas Staten Box 16787 Stambrd CT 9 203322-6294 5Airplane Funnies 30 Mm Wild3995 6US Scale Masters 60 Mis 19644195 7Warbirds Action 75 Mis Fantastic4995 8Hedge Hoppin Vol 145 Mis4195 9Which Way Up 70 Mb Aerobatics4795 10Hedge Hoppis Vol 1140 Mis4195 1Hedge Hoppin Vol 11130 Mis3495 12US Scale Mastero 45 Mis 19674195 Payment Check 10 Days MO VISA MC Card # top Date Phone No CODs Shippiog 350 IL Iowa IN Mich Miss Ohio Reo add B lb Tax Canada Add 12 % Total othero add 16 lb total Mail Academy Aviatica ii D ALL SALES FINAL PO Box 277 Hazel Creel IL 60429- 312 335-0776 perfectly propornonec modeling Curtiss uIobin 049 Englnsa -Channel R/C 41 Wingepan Electric Power Optional 82205 eros Very tess tal accie airersO ideatip suited ta mgdei Oig5t atspeaiing nid Cartiss Robin earn tee sprace linen aoe baagtitgiip prnpnrtinned tsr raSber siectrin Sr giow enoines easy end fun baud traineriike performance Fipilne Modem Cafeiso 50e Phone 17031 273 9503 INE MODELS INC PO Box 2136 Fairfax Virginia 22031 USA March 1988 43 5-In balloon-style Williams Bros scale wheels have dressed up hex-head screws tapped plastic hubs Rows simulated rivets made brands flexible white glues Homemade cotter pin holds wheel collar Theres information months column OTHER GREAT VIDEOS PRACTICAL SIZED GIANT SCALE MODELS NICK ZIROLI Jets too OC-3lA 1140 Span$4200 F4U CORSAIW2 193 Span$3000 ASMS ZERO2A 191 Span$3000 CuRTISP402A 194 Span$3000 AT-e TEXAN24 1101 Span$3000 F5F BEARCAT2A 186 Span$3000 FOKKERDR-127 183 Tripe$2700 Canopies Available Plans Sent Post-Paid within USA Send 5O Full Catalog Balsa Order Nick Ziroli 29 Edgar Dr Smithtown NY 11787 USA BUT come -in-bore pinion gear have mounting hole locations allow used ferrite OSs means can replace troublesome smallshafted reducers real brute keep us ing motor have cost $35 list may seem high really notjust soon damage parts economy drives have get replacements Astro drive heavier additional weight quickly forgot ten can actually continue flying after making landing after landing Finally youre tired good ol ferrite 05 can use drive its intended purpose 02/035 cobalt strongly recommend product consideration Coming future columns Im personally very big so-called 15 -size motors may want motors other Also test runs Astro 4fl46 drive some ferrite OSs varied props Please forward comments questions SASE please address listed beginning column HAPPY SILENT POWERED FLIGHT RC AerobaticsNan Putte Continued page 41 featured wings Both wings have same span chord wing area same equal-weight airplanes wing loadings would same bottom wing has substantial sweepback would exhibit dihedral effect result sweepback less dihedral would required aerodynamic center top wing about one-fourth wing chord back leading edge aerodynamic center bot tom wing almost trailing edge root chord means order get same longitudinal pitch lateral yaw characteris tics two airplanes swept-wing de sign would probably need longer tail moment and/or larger horizontal vertical tail surfaces addition center-of-gravity sweptwing design would further aft differences would expect find example demonstrates relatively simple change design can cause significant changes other parts airplane Lets try Figure 2 shows two differ ent kinds rudders same airplane Which likely create yaw roll youre trying Stall Turn air plane fly Knife Edge want pure yaw input rudder Rolling messes up maneuver Which rudder did pick Pattern airplanes likely have rudders like top because effective point applica tion force rudder deflected near bottom rudder means little no rolling moment will generated about axis fuselage other hand rudder bottom sketch will have great deal rolling moment generated rudder deflected wont see rudders like good designs Ill print kind design information now again theres interest Please let know responding advertisers mention read about ModelAviation used substrate build other types finish dacron polyester heat-shrink materi al similar Ceconite Stitts Poly-Fiber full-size aircraft Its advantages long life toughness resistance puncture tearing accepts paint dope quite light requires oniy minimum finish also contributes lightness has no adhesive fabric models framework given two three coats dope sanding lighdy between coats remove balsa fuzz Use enough dope thinner promote easy brushing since thinner evap orates does nothing towards building coating Any brush will serve preference sable long stralght hairs work dope balsa especially first coat ap ply dope surface will come con tact fabric including rib edges Koverall cut its grain running direction long dimension area covered Grain direction hard detect package tells find grain direc tion runs diagonally across wing example shrinkage will likely cause warp structure wing panel cut piece Koverall about two inches wider three four inches longer wing prefer cover wing halves starting center stretching fabric wards tip Lay Koverall bottom wing Brush strip dope about t/a thinned about 10% across wing Continued page 140 Specifications Wingspan 44 Wuight9A bs Power RK-740 Kit Includes Machine Cut Sanded Balsa Ply Foam Parts Full Size Rolled Plans Instruction Guide Necessary Hardware 2240711 9 Houston TX 77227 shipping 713 621-1462 March 1988 137 RC Scale/Wischers Continued page 43 E Tactical High Alt itude __The end Zij NA SAWSfamous line hobby saws Replacement Blades available dealer PAl Model Supply Razor #200 $288 Universal #500 P0 Box 3967 Torrance CA 90610 HOBBYPOXY TRUE TWO-PART EPOXY PAINTS 16 COLORS R ER EPOXY GLUES FOUR FORMULAS 5-MIN ID 45-MIN FAST FILL GRAIN FILLER QUICK-PREP POLYESTER RESIN FREE COLOR CARD AND BROCHURE Homeypoxy DIVISION PeltS Paint Company lac 36 Pine Street Rockaway NJ 07866 qualities make model NATS winner same ones Sunday sport-scale fliers look Exceptional appearance start course FW 190s stark sinister shape has always excited modelers important friendly flying quelities designs have always emphasized safety low speeds EW 190 has nerited ability fly 80-90 mph right down near-hover landing wide-track gear makes ideal first tail-dragger Kit features Eull-size plans showing radio retracting gear installation Color schemes decals THREE different EW 190sSeparate 16-page instruction booklet cutaway diagrams in-depth flying hints Diecut machined nalsa nylon fittings formed wire cowl cenopy etc Span 65 Area 730 Sq 4 6 channel Engine 60 center directly over fabric dope will almost instantly soak through Koverall partially dissolve dope previously applied framework occurs rather quickly obtain firm contact between fabric balsa quickly stretch across wing grasp ing edges Run finger over wet dope press Koverall close contact balsa After about /2 minute bond tween fabric balsa already firm Koverall glued dope wing tip Grasp handful surplus fabric tip pull stretch lengthwise along wing Again press dope through fabric along tip strip about width fist will adhere very short time matter few seconds Repeat pulling lengthwise along tip toward leading edge likewise toward trailing edge excess wrinkles have formed fabric can moved softening dope wet dope stretching fab ric across wing tip front rear Now use dope along leading edge seg ments about six inches pulling rather gently remove lengthwise wrinldes formed earlier stretching Use ribbon dope about along leading edge same along trailing edge remove wrinkles Throughout covering process watch grain direction fabric cer tain remains straight down wings center line Except creases folded Koverall initially wing should now essen tially free wrinkles small wrinides compound curve tip slice through razor blade add dope push fabric contact balsa Us ing new single-edge razor blade remove excess Koverall around edges top sur face now covered same bottom Keep overlaps along edge minimum preferably about % sharp trailing edge really no need overlap Koverall cut off flush edge covering second half wing will course overlap wings center will sanded later become nearly invis ible will edge overlaps wing completely covered allow about 30 mm dope dry Using Mono Kote equivalent heat-sealing iron set about half heat shrink Koverall instan taneous process requires few seconds heating folding creases will now vanish well other small large wrinides Setting iron high heat usually undesirable can cause warps structure due excess shrinkage Koverall fuselage covered much same manner using narrow ribbon dope around edges cause adherence Koverall balsa Stretch lengthwise crosswise remove wrinkles Shrinkage can quite forceful light structure may bend too much heat used isnt unusual hear small snapping noises coming underlying balsa standard finish Koverall starts three coats clear dopeand non tautening butyrate An alternative nitrate dope no need dope tightens fabric would using silk nylon since already very tight heat treatment preferred brush dope application camels hair bristles about inch wide Camel hair brushes have slightly wavy hair holds large quantities dope brush soft helps avoid forcing dope through fabric could cause runs interi surface open structure mi nor problem compared first coat over silk because close weave Koverall After second coat dope sand over laps feather edges After third coat sand again lightly along edges sanding con tinues raise fuzz Koverall indicates dope coats applied too lightly Add another coat Now borrow idea restorers fullsize fabric-covered aircraft Add aluminum powder clear dope powder can found artists supply stores numerous grades fineness use No 120 aluminum powder made Crescent Bronze Powder Co extra-fine grade quanti ty used about threc heaping teaspoons pint thinned dope Use too little powder comes difficult sand afterward Use too much powder rubs off hands before sanding Brush two coats aluminum dope spray three coats After thoroughly dry sanded almost completely away using No 320 silicon carbide open-coat paper working outdoorsvery necessary since powder floats air settles everything makes awful mess workshop Wear paint mask avoid breathing stuff spaces between threads Koverall can completely filled smooth finish remaining aluminum adds almost no weight Three indispensable references modelers Only shown Two large volumes Approx 800 photos newcolor Large format 300 plus photos nearly 100 detailed shots US $60 2 4 large color prints aces 3-views US $40 including post beautiful wall chart aircraft Bank aufhorized check MO please color Bank authorized check MO please NOTE For complete color catalog please send 2 International Reply Coupons Ask post office KOOKABURRA TECHNICAL PUBLICATIONS Pty Ltd P0 Box 648 Dandenoug 3175 VictorIa Australia BC PRODUCTS NEW BULLET SPINNER Made 6061 Aluminum & weighs under loz 1 diameter 11/4 long 1/4 radius nose Specify thread engine size & make $600 & pay shipping US BC PRODUCTS 111 N Starkweather Pampa TX 79065 call 806 665-6361 accept MG/VISA & Money Orders Texas add 51/% sales tax 140 Model Aviation RC Scale/Wischers Continued page 137 FULL BODY PILOT KIT Contains pilot head hands boots helmet cap goggles full templates easy instruc tions Easy assemble finish Some simple sewing required Fully positionable too #206- scale #205-% scale #204-% scale #203- scale Prioe 595 995 1095 1695 DARNED GOOD AIRMEN Lightest pilots available Lifelike vinyl latex rubber Build Sportsman Barnstormer Full Body Bust 2 BUST PILOT KIT Contains pilot head helmet sport cap goggles jacket Easy assemble finish PriCO #108-ye scale NEW595 #lO6-/e scale695 #105-A scale , #104- scale. 8953V* some 0103i/ scale 1495s mp e 4II sewn equ red JET PILOT KIT Pilot has molded jet helmet Contains face mask oxygen hose Extreme ly Realistic Weighs less /2 OZ Price #308-A scale 595 #307-h scale 695 ORDERING INSTRUCTIONS See dealer first order direct Add $100 shipping NYS residents add 7/o tax Send check money order CODS OK Send $100 catalog See Deafer add Dot far direct order handling model sprayed lightcolored dope epoxy afterward aluminum undercoat prevents transmission light through finish Much less color needed final finish coats resulting savings weight course see-through finish may desired aluminum coats may omitted ordinarily situation Scale aircraft Final coats color dope sprayed usually light colors first followed masking spraying darker colors best divi sion lines between colors use 3-M Fine Line masking tape very thin plastic slightly rough surface like crepe paper can bent around curves leaves very small ridge between colors advantage appearance Its disadvantage priceabout four five times ordinary paper tape con tinue use everywhere masking operation except critical lines colors meet Should stretch-wrinlde appear finished surface due bad landing other reason years later can removed aid MonoKote iron using lowest heat necessary may some temporary discol oration finish due heat will vanish after cooling After 100 hours air Aeronca K has needed treatment several times balsa structure has stressed RC Soaring/Blakeslee Continued page 45 country contest March 1987 column fig ured readers could relate sweaty palms syndrome remembering first launch latest beautiful baby Fortunately some photos Dr Pankoins wings hand sent previously wrote company would stationing him temporarily New York city area Ive heard Lee Murray Walter flying Terry Good Walts son Storm King club Isnt Soaring wonder ful hobby Walter can come could go almost anywhere world quickiy find new friends go flying Drop line Walter let us know youre making out Big Apple 1987 National Sailplane Symposium Dr Carl Moha kind enough send summary fifth annual MARCS Symposium held Madison WI October 31 November 1 Sounds like exciting fun time year 111 participants 15 states continuing steady growth meeting Thursday early arrivals journeyed EAA Museum Oshkosh treated personally conducted tour museum direc tor Carl Swickiey Friday began very inter esting tour UW Meteorology Department learned information satellites interpreted weather forecasts symposi um proper took off Saturday morning talk Dr Walt Good long battle RC frequencies have today RCers owe Walt fellow members AMA Fre quency Committee very big thank-you years effort put behalf Lee Murray presented report re search dealing comparison available film materials used covering models Profes sor Roland Stull UW Meteorology Depart ment gave very enlightening lecture latest techniques used thermal research Pete Waters dynamic presentation latest news radios helped ward off effects gener ous smorgasbord lunch lively dis cussion clearing up questions have concerning what next radio equipment Leon Kincaid gave good insight thought processes philosophy real win ner consistency over years has envy of us Paul Carison long sociate Michael Selig gave report Michaels progress slow-speed wind tun nel airfoil tests Princeton looks like another year before meaningful results will forthcoming discoveries should well worth wait Gary Tschautscher gave us recent informa tion German model press driving home necessity F3B-type contests United States ever again compete equal footing rest world Dinner tracted 93 local restaurantafterwards being entertained talk couple flew around world Beechcraft Bonanza Some adventuresome rest us Sunday morning table clinics attracted crowds learned about computer programs new kits designs watched Joe Wurts create two vacuum-bagged foam wings quicker us could get thoughts organized made look easyand what perfectly fin ished surfaces Paul Carlson came back present material own latest thoughts concerning design ideal Thermal Duration Sailplane gave great deal attention reducing drag just full-size sailpianes Ken Bates followed update lat est experiments flying wings solu PRODUCTS FOR T flfltfCCmtMtI flflEI FR Complete Line Exhaust Systems * Tuned Muffled Tuned Pipes * Headers uri Mufflers Expansion Mufflers copter 8a11 Mufflers Specialized Exhaust Systems Unsurpas a E AMERICAN SR OM RIDGE CAMPBELL T RITE DUBRO EASY BUILT MODELS FLYLtNE FOX BERG DUDOIS LOW K&B Mt CR0 X OS MAX RA PECK-POLYMER ECT MODELS SEAGLEN STERLING VAN SUPER TIGRE INDER FIITE LER WILLIAMSS RODUCTS RS ESTES MODEL ROCKETS Coad SI Cash Cheek ow Stomps lea 31 page tabloid 1. DISCOUNT Catalog 900 iltustrations out 700 Kits choose feom MAILORDER PHONIORDER IN STORE FINN VALLEY HOllY CENTER 837 W Main St LansdalmPa 19441 --mainua prrgrmanvu TOP PERFORMAL K&B ENGINES AirplaneManes K&B FUELSKEB GLOW PLUGS 9 ends4 Choices Matched Finish System BEST APPEARANCE KEI FIBERGLASS CLOTH KEB Mica-lallsens FILLER KEI SUPER POXY RESIN KEI SUPER FOXY THINNER K&l SUPER FOXY PRIMER K&l SUPER POXY PAINT K&B MIXING CUPS I h 1988 141

NEW GLUES note Bud Wolfe Scotts dale AZ informs us suitable substitute Wilbold R/C-56 Elmers All-Purpose Tacky Glue product Borden sold local drugstores such Walgreens craft shops Bud reports seems have same proper ties RIC-56 dries clear remains flexible unlike other ordinary white glues have also found several other products similar properties Penn International Chemicals makers PlC products sold hobby shops advertises PlC Flex White glue intended adhering canopies sheet-plastic windshields thick tacky will bond porous nonpourous material dries clear re mains flexible Also found craft stores Aleenes AllPurpose Tacky Glue product Artis Inc Solvay CA can used cementing wood metal glass ceramic paper china fabrics fiber plastics foam search flexible glues came about cause Wilhold RIC-56 somewhat difficult find some parts country also because its so-called scarcity has prompted some retailers raise price four-ounce bottle Aleenes Tacky Glue found craft store about one-third cost R/C-56 lo cal hobby shop glues use cementing sheet aluminum exterior balsa framework forming imitation rivets fastening canopies clouding other blemishes have tested PlC Flex White Aleenes glues have found nearly identical RIC-56 Easy weathering Bud Wolfe also passes along another idea may old some Scale modelers new others adds little black paint final sprayed clear overcoat give model used dirty look employed technique Blohm Voss BV-141B especially helpful mellowing color its white crosses noticeably too bright Modified wheels Finding suitable wheels Scale models has always problem has driven some serious builders make own spend hours days weeks sometimes months aircrafts exterior produce ultimate realismand use wheels come hobby shop whole airplane degraded because wheels wrong size incorrect hubs too fat too thin generally lacking detail Probably conspicuous respect vintage wheels represent wrong era have incorrect hub detail Williams Brothers Golden Age wheels have wealth detail hub discs serve very well model matches era balloon-style Scale wheels have blank hubs may bless ing can adorn wheel disc de tails match photos three-view drawing necessary row hexagon-head bolts near axle find Williams Bros wheel hub material easily drilled tapped Walthers Morse hex screws found hobby shops model railroad section lo cal Ace hardware store also stocks screws displayed rotating countertop dispenser becomes matter choosing correct size best appearance documentation photos show row closely spaced rivets screws around peri phery hub disc can simulated dots R/C-56 glue applied individually round toothpick pick up small droplet glue puddle transfer drop proper location wheel may seem require exceptional manual dexterity job quite easily accomplished anyone mod elers best equipped trick form puddle RIC-56 nonabsorbtive surface such metal plastic Make puddle diameter about % /2 its too large dries up before can be complete ly used up however too small deep lets toothpick gather excess glue can lead blot being deposited models surface puddle thickens too much usable start fresh puddle rivets become same diameter Rivet size easily controlled cutting sharp tip toothpick obtain desired diameter case bad rivet wrong diam eter shape can removed reapplied instant increase diameter wheel discor 42 Model Aviation Radio Control Scale Bob Dolly Wischer 5-221 Lapham Peak Rd Delafleld WI 53018 Jeff Keletys l/scaleBede BD-8 spans 265 weighs 21 oz Power Cox TD 049 Tarno carb has also flown Astro cobalt 035 5 cells Jomar SC5 speed controller weight 28 oz Its scaled down Dennis Tapsfields -scale drawings Gary Wild used Sig kit Citabria super iao Decathlon Its engine Salto 65 tourstroke weighs 75 lb finish Coverlte Formula U Rustoleum paints Cessna 1-19 BIrd Dog Jerome Twomey started Circus Hobbies kit Its engine OS 120-cu-in twin Gemini Flap control surface corrugations Plastruct angles rivets CyA glue Lettering panel lines come Chart-Pak letters tape rather create illusion increased diameterplace circular row glue rivets tire rather hub disc mask Out portion tire will re main hlack spray color disc narrow band tire adjacent disc standpoint appearance portion black tire has become part disc documentation photo may show round wheel collar end axle fastened large cotter pin use brass tube models axle sweat-soldered over music wire axle tube should extend slightly past end axle can cross-drilled accept small cotter pin wheel collar also drilled through side axle hole en larged necessary fit tube have found tiny cotter pins wellstocked hardware store However cotter pins almost size easy make soft iron copper wire wire flattened out hammer formed loop wrapping around small drill proper diameter around music wire Pinch flat wire pliers close drill obtain typical cotter pin shape Resultinstant cotter pins size length look great model also satisfaction answering oftenasked question source tiny cotter pins Flat wire originally intended ladders model railroad boxcars another possible source material its available hobby shop Koverall While gathering data accompany photos used column always ask model weight wingspan scale finish engine displacement information about out-of-theordinary building techniques About 50% Scale modelers queried about finish will have used Super Coverite fiberglass cloth coated K&B epoxy Hobbypoxy old tradi tional silk-and-dope technique has become lost artOr nearly sobecause rarely see combination although making small comeback Sig Koverall now being used modelers last four models work shop finished Koverall re peatedly asked about procedures techniques producing quality cover job doesnt help bit explain very similar cover ing silk questioners havent used silk either Koverall provides finish good simula tion fabric-covered airplane can also Continued page 137 VIDEOLIST SALE afr ~1Basic Construction Beginners 107 Mm4995 3995 2Basic Flight Training Far Beginners 65 Mis4495 3495 3 World Model Aviation 90 Mis44 953795 4 Oshkosh Overview 55 Mis39 953495 3495 3795 19874495 MANY LIFE LIKE SCENES WITH NEW3495 4495 BROADCAST QUALITY JETS BIPES3495 CLASSICS AND LOTS OF HEAVY METAL2995 ALL FLOWN BY THE BEST IN SCALE3795 SPECIAL BUY 1987 MASTERS AT RETAIL AND GET 1984 MASTERS FOR ONLY 2795 SAVE 1400 1987 SCALE MASTERS 45 MIN 3795 FORIEGN DISTRIBUTORS WANTED BUY ANY 3 VIDEOS GET 1 FREE L fO asnas Only certified checks money orders anceoted Minimum order 510 three packages 4 Powerpoies l53 per oackage O1 shipping handlisal CT residents add 75% sales tax Prices soislect Change sithOot notice DEALER INQUIRIES INVITED farther information den n ces send SASE Nosiness Card SERMOS RIC SNAP CONNECTORS Calar Cttnas Staten Box 16787 Stambrd CT 9 203322-6294 5Airplane Funnies 30 Mm Wild3995 6US Scale Masters 60 Mis 19644195 7Warbirds Action 75 Mis Fantastic4995 8Hedge Hoppin Vol 145 Mis4195 9Which Way Up 70 Mb Aerobatics4795 10Hedge Hoppis Vol 1140 Mis4195 1Hedge Hoppin Vol 11130 Mis3495 12US Scale Mastero 45 Mis 19674195 Payment Check 10 Days MO VISA MC Card # top Date Phone No CODs Shippiog 350 IL Iowa IN Mich Miss Ohio Reo add B lb Tax Canada Add 12 % Total othero add 16 lb total Mail Academy Aviatica ii D ALL SALES FINAL PO Box 277 Hazel Creel IL 60429- 312 335-0776 perfectly propornonec modeling Curtiss uIobin 049 Englnsa -Channel R/C 41 Wingepan Electric Power Optional 82205 eros Very tess tal accie airersO ideatip suited ta mgdei Oig5t atspeaiing nid Cartiss Robin earn tee sprace linen aoe baagtitgiip prnpnrtinned tsr raSber siectrin Sr giow enoines easy end fun baud traineriike performance Fipilne Modem Cafeiso 50e Phone 17031 273 9503 INE MODELS INC PO Box 2136 Fairfax Virginia 22031 USA March 1988 43 5-In balloon-style Williams Bros scale wheels have dressed up hex-head screws tapped plastic hubs Rows simulated rivets made brands flexible white glues Homemade cotter pin holds wheel collar Theres information months column OTHER GREAT VIDEOS PRACTICAL SIZED GIANT SCALE MODELS NICK ZIROLI Jets too OC-3lA 1140 Span$4200 F4U CORSAIW2 193 Span$3000 ASMS ZERO2A 191 Span$3000 CuRTISP402A 194 Span$3000 AT-e TEXAN24 1101 Span$3000 F5F BEARCAT2A 186 Span$3000 FOKKERDR-127 183 Tripe$2700 Canopies Available Plans Sent Post-Paid within USA Send 5O Full Catalog Balsa Order Nick Ziroli 29 Edgar Dr Smithtown NY 11787 USA BUT come -in-bore pinion gear have mounting hole locations allow used ferrite OSs means can replace troublesome smallshafted reducers real brute keep us ing motor have cost $35 list may seem high really notjust soon damage parts economy drives have get replacements Astro drive heavier additional weight quickly forgot ten can actually continue flying after making landing after landing Finally youre tired good ol ferrite 05 can use drive its intended purpose 02/035 cobalt strongly recommend product consideration Coming future columns Im personally very big so-called 15 -size motors may want motors other Also test runs Astro 4fl46 drive some ferrite OSs varied props Please forward comments questions SASE please address listed beginning column HAPPY SILENT POWERED FLIGHT RC AerobaticsNan Putte Continued page 41 featured wings Both wings have same span chord wing area same equal-weight airplanes wing loadings would same bottom wing has substantial sweepback would exhibit dihedral effect result sweepback less dihedral would required aerodynamic center top wing about one-fourth wing chord back leading edge aerodynamic center bot tom wing almost trailing edge root chord means order get same longitudinal pitch lateral yaw characteris tics two airplanes swept-wing de sign would probably need longer tail moment and/or larger horizontal vertical tail surfaces addition center-of-gravity sweptwing design would further aft differences would expect find example demonstrates relatively simple change design can cause significant changes other parts airplane Lets try Figure 2 shows two differ ent kinds rudders same airplane Which likely create yaw roll youre trying Stall Turn air plane fly Knife Edge want pure yaw input rudder Rolling messes up maneuver Which rudder did pick Pattern airplanes likely have rudders like top because effective point applica tion force rudder deflected near bottom rudder means little no rolling moment will generated about axis fuselage other hand rudder bottom sketch will have great deal rolling moment generated rudder deflected wont see rudders like good designs Ill print kind design information now again theres interest Please let know responding advertisers mention read about ModelAviation used substrate build other types finish dacron polyester heat-shrink materi al similar Ceconite Stitts Poly-Fiber full-size aircraft Its advantages long life toughness resistance puncture tearing accepts paint dope quite light requires oniy minimum finish also contributes lightness has no adhesive fabric models framework given two three coats dope sanding lighdy between coats remove balsa fuzz Use enough dope thinner promote easy brushing since thinner evap orates does nothing towards building coating Any brush will serve preference sable long stralght hairs work dope balsa especially first coat ap ply dope surface will come con tact fabric including rib edges Koverall cut its grain running direction long dimension area covered Grain direction hard detect package tells find grain direc tion runs diagonally across wing example shrinkage will likely cause warp structure wing panel cut piece Koverall about two inches wider three four inches longer wing prefer cover wing halves starting center stretching fabric wards tip Lay Koverall bottom wing Brush strip dope about t/a thinned about 10% across wing Continued page 140 Specifications Wingspan 44 Wuight9A bs Power RK-740 Kit Includes Machine Cut Sanded Balsa Ply Foam Parts Full Size Rolled Plans Instruction Guide Necessary Hardware 2240711 9 Houston TX 77227 shipping 713 621-1462 March 1988 137 RC Scale/Wischers Continued page 43 E Tactical High Alt itude __The end Zij NA SAWSfamous line hobby saws Replacement Blades available dealer PAl Model Supply Razor #200 $288 Universal #500 P0 Box 3967 Torrance CA 90610 HOBBYPOXY TRUE TWO-PART EPOXY PAINTS 16 COLORS R ER EPOXY GLUES FOUR FORMULAS 5-MIN ID 45-MIN FAST FILL GRAIN FILLER QUICK-PREP POLYESTER RESIN FREE COLOR CARD AND BROCHURE Homeypoxy DIVISION PeltS Paint Company lac 36 Pine Street Rockaway NJ 07866 qualities make model NATS winner same ones Sunday sport-scale fliers look Exceptional appearance start course FW 190s stark sinister shape has always excited modelers important friendly flying quelities designs have always emphasized safety low speeds EW 190 has nerited ability fly 80-90 mph right down near-hover landing wide-track gear makes ideal first tail-dragger Kit features Eull-size plans showing radio retracting gear installation Color schemes decals THREE different EW 190sSeparate 16-page instruction booklet cutaway diagrams in-depth flying hints Diecut machined nalsa nylon fittings formed wire cowl cenopy etc Span 65 Area 730 Sq 4 6 channel Engine 60 center directly over fabric dope will almost instantly soak through Koverall partially dissolve dope previously applied framework occurs rather quickly obtain firm contact between fabric balsa quickly stretch across wing grasp ing edges Run finger over wet dope press Koverall close contact balsa After about /2 minute bond tween fabric balsa already firm Koverall glued dope wing tip Grasp handful surplus fabric tip pull stretch lengthwise along wing Again press dope through fabric along tip strip about width fist will adhere very short time matter few seconds Repeat pulling lengthwise along tip toward leading edge likewise toward trailing edge excess wrinkles have formed fabric can moved softening dope wet dope stretching fab ric across wing tip front rear Now use dope along leading edge seg ments about six inches pulling rather gently remove lengthwise wrinldes formed earlier stretching Use ribbon dope about along leading edge same along trailing edge remove wrinkles Throughout covering process watch grain direction fabric cer tain remains straight down wings center line Except creases folded Koverall initially wing should now essen tially free wrinkles small wrinides compound curve tip slice through razor blade add dope push fabric contact balsa Us ing new single-edge razor blade remove excess Koverall around edges top sur face now covered same bottom Keep overlaps along edge minimum preferably about % sharp trailing edge really no need overlap Koverall cut off flush edge covering second half wing will course overlap wings center will sanded later become nearly invis ible will edge overlaps wing completely covered allow about 30 mm dope dry Using Mono Kote equivalent heat-sealing iron set about half heat shrink Koverall instan taneous process requires few seconds heating folding creases will now vanish well other small large wrinides Setting iron high heat usually undesirable can cause warps structure due excess shrinkage Koverall fuselage covered much same manner using narrow ribbon dope around edges cause adherence Koverall balsa Stretch lengthwise crosswise remove wrinkles Shrinkage can quite forceful light structure may bend too much heat used isnt unusual hear small snapping noises coming underlying balsa standard finish Koverall starts three coats clear dopeand non tautening butyrate An alternative nitrate dope no need dope tightens fabric would using silk nylon since already very tight heat treatment preferred brush dope application camels hair bristles about inch wide Camel hair brushes have slightly wavy hair holds large quantities dope brush soft helps avoid forcing dope through fabric could cause runs interi surface open structure mi nor problem compared first coat over silk because close weave Koverall After second coat dope sand over laps feather edges After third coat sand again lightly along edges sanding con tinues raise fuzz Koverall indicates dope coats applied too lightly Add another coat Now borrow idea restorers fullsize fabric-covered aircraft Add aluminum powder clear dope powder can found artists supply stores numerous grades fineness use No 120 aluminum powder made Crescent Bronze Powder Co extra-fine grade quanti ty used about threc heaping teaspoons pint thinned dope Use too little powder comes difficult sand afterward Use too much powder rubs off hands before sanding Brush two coats aluminum dope spray three coats After thoroughly dry sanded almost completely away using No 320 silicon carbide open-coat paper working outdoorsvery necessary since powder floats air settles everything makes awful mess workshop Wear paint mask avoid breathing stuff spaces between threads Koverall can completely filled smooth finish remaining aluminum adds almost no weight Three indispensable references modelers Only shown Two large volumes Approx 800 photos newcolor Large format 300 plus photos nearly 100 detailed shots US $60 2 4 large color prints aces 3-views US $40 including post beautiful wall chart aircraft Bank aufhorized check MO please color Bank authorized check MO please NOTE For complete color catalog please send 2 International Reply Coupons Ask post office KOOKABURRA TECHNICAL PUBLICATIONS Pty Ltd P0 Box 648 Dandenoug 3175 VictorIa Australia BC PRODUCTS NEW BULLET SPINNER Made 6061 Aluminum & weighs under loz 1 diameter 11/4 long 1/4 radius nose Specify thread engine size & make $600 & pay shipping US BC PRODUCTS 111 N Starkweather Pampa TX 79065 call 806 665-6361 accept MG/VISA & Money Orders Texas add 51/% sales tax 140 Model Aviation RC Scale/Wischers Continued page 137 FULL BODY PILOT KIT Contains pilot head hands boots helmet cap goggles full templates easy instruc tions Easy assemble finish Some simple sewing required Fully positionable too #206- scale #205-% scale #204-% scale #203- scale Prioe 595 995 1095 1695 DARNED GOOD AIRMEN Lightest pilots available Lifelike vinyl latex rubber Build Sportsman Barnstormer Full Body Bust 2 BUST PILOT KIT Contains pilot head helmet sport cap goggles jacket Easy assemble finish PriCO #108-ye scale NEW595 #lO6-/e scale695 #105-A scale , #104- scale. 8953V* some 0103i/ scale 1495s mp e 4II sewn equ red JET PILOT KIT Pilot has molded jet helmet Contains face mask oxygen hose Extreme ly Realistic Weighs less /2 OZ Price #308-A scale 595 #307-h scale 695 ORDERING INSTRUCTIONS See dealer first order direct Add $100 shipping NYS residents add 7/o tax Send check money order CODS OK Send $100 catalog See Deafer add Dot far direct order handling model sprayed lightcolored dope epoxy afterward aluminum undercoat prevents transmission light through finish Much less color needed final finish coats resulting savings weight course see-through finish may desired aluminum coats may omitted ordinarily situation Scale aircraft Final coats color dope sprayed usually light colors first followed masking spraying darker colors best divi sion lines between colors use 3-M Fine Line masking tape very thin plastic slightly rough surface like crepe paper can bent around curves leaves very small ridge between colors advantage appearance Its disadvantage priceabout four five times ordinary paper tape con tinue use everywhere masking operation except critical lines colors meet Should stretch-wrinlde appear finished surface due bad landing other reason years later can removed aid MonoKote iron using lowest heat necessary may some temporary discol oration finish due heat will vanish after cooling After 100 hours air Aeronca K has needed treatment several times balsa structure has stressed RC Soaring/Blakeslee Continued page 45 country contest March 1987 column fig ured readers could relate sweaty palms syndrome remembering first launch latest beautiful baby Fortunately some photos Dr Pankoins wings hand sent previously wrote company would stationing him temporarily New York city area Ive heard Lee Murray Walter flying Terry Good Walts son Storm King club Isnt Soaring wonder ful hobby Walter can come could go almost anywhere world quickiy find new friends go flying Drop line Walter let us know youre making out Big Apple 1987 National Sailplane Symposium Dr Carl Moha kind enough send summary fifth annual MARCS Symposium held Madison WI October 31 November 1 Sounds like exciting fun time year 111 participants 15 states continuing steady growth meeting Thursday early arrivals journeyed EAA Museum Oshkosh treated personally conducted tour museum direc tor Carl Swickiey Friday began very inter esting tour UW Meteorology Department learned information satellites interpreted weather forecasts symposi um proper took off Saturday morning talk Dr Walt Good long battle RC frequencies have today RCers owe Walt fellow members AMA Fre quency Committee very big thank-you years effort put behalf Lee Murray presented report re search dealing comparison available film materials used covering models Profes sor Roland Stull UW Meteorology Depart ment gave very enlightening lecture latest techniques used thermal research Pete Waters dynamic presentation latest news radios helped ward off effects gener ous smorgasbord lunch lively dis cussion clearing up questions have concerning what next radio equipment Leon Kincaid gave good insight thought processes philosophy real win ner consistency over years has envy of us Paul Carison long sociate Michael Selig gave report Michaels progress slow-speed wind tun nel airfoil tests Princeton looks like another year before meaningful results will forthcoming discoveries should well worth wait Gary Tschautscher gave us recent informa tion German model press driving home necessity F3B-type contests United States ever again compete equal footing rest world Dinner tracted 93 local restaurantafterwards being entertained talk couple flew around world Beechcraft Bonanza Some adventuresome rest us Sunday morning table clinics attracted crowds learned about computer programs new kits designs watched Joe Wurts create two vacuum-bagged foam wings quicker us could get thoughts organized made look easyand what perfectly fin ished surfaces Paul Carlson came back present material own latest thoughts concerning design ideal Thermal Duration Sailplane gave great deal attention reducing drag just full-size sailpianes Ken Bates followed update lat est experiments flying wings solu PRODUCTS FOR T flfltfCCmtMtI flflEI FR Complete Line Exhaust Systems * Tuned Muffled Tuned Pipes * Headers uri Mufflers Expansion Mufflers copter 8a11 Mufflers Specialized Exhaust Systems Unsurpas a E AMERICAN SR OM RIDGE CAMPBELL T RITE DUBRO EASY BUILT MODELS FLYLtNE FOX BERG DUDOIS LOW K&B Mt CR0 X OS MAX RA PECK-POLYMER ECT MODELS SEAGLEN STERLING VAN SUPER TIGRE INDER FIITE LER WILLIAMSS RODUCTS RS ESTES MODEL ROCKETS Coad SI Cash Cheek ow Stomps lea 31 page tabloid 1. DISCOUNT Catalog 900 iltustrations out 700 Kits choose feom MAILORDER PHONIORDER IN STORE FINN VALLEY HOllY CENTER 837 W Main St LansdalmPa 19441 --mainua prrgrmanvu TOP PERFORMAL K&B ENGINES AirplaneManes K&B FUELSKEB GLOW PLUGS 9 ends4 Choices Matched Finish System BEST APPEARANCE KEI FIBERGLASS CLOTH KEB Mica-lallsens FILLER KEI SUPER POXY RESIN KEI SUPER FOXY THINNER K&l SUPER FOXY PRIMER K&l SUPER POXY PAINT K&B MIXING CUPS I h 1988 141