Radio Control Scale Bob & Dolly Wischer LANDING GEAR LOCATION letter reader raised question effect ground handling takeoff landing wheel centers displaced forward aft optimum location Experience tells us wheels too far forward sometimes tendency model ground ioop divert straight path takeoff landing result wing tip will touch ground worst condition encountered situation could alternate scraping both wing tips model eventually going over its back can lead messy repair particularly biplane Airplanes susceptible ground looping tail skids wheels far ahead center-of-gravity Examples some WW types have wheels far forward almost under neath engine effectively control such model requires quick deft handling rudder helpful stand directly behind model take off Excursions right left quickly detected position rudder corrections can made stop tendency swing off course have also found necessary use bit up-elevator keep tail skid contact runway until speed builds point rudder becomes effective Standing behind model during two Reno Nats L Roland Baltes modified Jemco kit Republic P-47N Thunderbolt Finished Aero Gloss dope uses OS 61 engIne weighs 11 lb Baltes photo George Millers Republic A-i 0 Warthog R used twin Turbax II fan units K&B 75cc engines equipped MACS ducted-fan pipes scratch-built Koku-Fan drawings 1/10-scale Model weighs 20 lb has RC-controlled canopy actuation Main gear units homemade retracts nose gear Dave Brown item Seen England L Brian PeckflamsAvro BabyTlieswitfl Enya 9Otour-stroke power builttoa scaleoti /48 weighs9/2 lb Finish K&B epoxy over Solartex R Peter McDermotts 1/5-scale Fly Baby has 0560 four-stroke weighs 71/2 lb Finished Humbrol overSolartex Still England L Cohn Moss used Tapsfield drawings construct Hawk Pshaw version Myers Little Toot uses Webra Speed 61 power weighs 10 lb has enamel finish R Look complex rigging double-bay biplane 1/5-scale Nieuport Nighthawk Martin Fardell Span post-WW British fighter 66 weight 101/2 lb Finish uses nylon cover nitrate dope Powermax paint K&B satin topcoat Nestled somewhere dummy engine 05 80 four-stroke engine 48 Model Aviation landing isnt easily achieved model would need approach its touchdown passing over pilots heada decidedly awkward circumstance best models approach path should pass pilot quite closely afford rear view lands seems easiest avoid landing ground loop model touches down main wheels rather attempted three-point landing isnt whole lot done about changing more-rearward wheel loca tion seriously affecting Scale appearance have seen WW Nieuports other aircraft having ward wheel centers flown reasonable success spite prob lem Pilots develop necessary skill learn best longitudinal attitude leaving approaching runway type plane being flown Propeller wash can stabilizing influence helps keep rudder authoritative problem minimized using engine adequate output Later airplanes main wheels spaced forward usually tailwheels longer tail moment arms tendency ground loop reduced because greater weight tailwheel maintains contact runway until sufficient speed built up fin rud der take over duty directional control landing type model tendency ground loop will greatest point tailwheel just about touch runway already touching little weight upon synchronized bit up-elevator par tially applied throttle can increase direc tional control pressing tailwheel down firmly Too much treatment model becomes air borne again rear view takeoff landing also helpful type model Deliberately moving wheels rear ward upward changing landing gear shape will detected anyone critical eye Scale appearance Small changes derive doubtful benefit see numerous models otherwise correct outlines Scale abominations because serious landing sear faults shape height position have tampered reason anotherand sometimes reason Treaded tires should smooth incorrect tread pattern wheel hubs wrong shape diameter other common flaws prominent Scale feature cant drastically altered penal ty Scale appearance exceptions non-altera tion rule however An example would airplane landing gear too far rearward such deHavilland 71 racer full-size DH may have propensity nose over two racers built find nothing written history warn mod eler problem Moving models wheel centers about A-in forward would great help avoiding inevitable nose-over end landing run grass small change undoubtedly detectable airplanes charac ter remains nearly unchanged Obviously fault needs corrected design stage modeling could easily overlooked model Tricycle gears also susceptible problems regard placement models As rule placing wheel cen ters relative center gravity should correct full-size plane copied accu rately main gear wheels too far forward near CG load nose wheel reduced model becomes impossible taxi crosswind wind will cause weathervaning nose wheel skids sideways However forward location main gear produc es best takeoff landing properties Moving mains rearward away CG adds load nose wheel positive steering ground another problem follows takeoff model builds speed find con siderable Up-elevator control input needed rotate wing lifting angle attack instant enough lift generated model leaps unrealistical ly air too steep climb angle Continued Page 132 Satisfaction Guaranteed Direct Only BALSA SHEETS 36 45 30 BALSA STICKS 36 45 1/162331/16 1/409 3/32r2401/16 3/810 1/8 2431/16 1/214 3/162493/32 1410 1/4 2563/32 3812 1/323373/32 1/216 1/203371/8 1808 1/1633748311/8 141116 3/3234450371/8 3/81218 1/8 35471451/8 1/21024 3/1636282553/163/161116 114 37390613/16 3/817 5/163853/16 1/22230 3/8 3881247114 1/41624 1/2 311015514 381926 3/4 31651/4 1/22130 1/1645676481/4 3/43444 3/3247004561/4 140 1/5 480106665/165/162126 3/16493122753/8 3/82737 114 4110134843/8 1/23246 3/8 41652253/8 3/44255 1/2 42252013/8 152 MATCHED SHEETS4212 123653 12344662 332410012 158 164108585846 310412034 3487 144131 BALSA HOT LINE Call 806 745-6394 10am -6pm Central Time LONE STAR MODELS 1623 57th St Lubbock TX 79412 --LIGHT 4-6 LB BALSA TRIANGLES 36WOOD36 1/414251/32349 3/8 3/8301/20349 1/21/2341/16349 3/43/4453/32356 11551/8367 3/16376 BALSAPLANKS361/4385 11853/83115 121501/23139 132003/43220 1428013300 11/232751/16478 11/24360332491 222251/84100 233253/164117 244351/44138 334953/84207 346881/24282 TAPERED SHEETS36 1/4265TRAILING EDGE36 1/43851/4132 3/82685/1611/438 3/83983/811/246 1/231201/2270 BASSWOOD 3/163/16 3/16 1/4 3/163/8 3/161/2 3/163/4 1/41/4 1/43/8 1/43/4 3/8 3/8 3/8 1/2 3/83/4 1/21/2 1/23/4 46 26 30 38 46 88 42 49 80 60 70 80 00 100 BUNDLE DEALS 20-1/8336685 20-1/164361020 203/32338845 15-3/32436855 15-1/8336715 101/8436675 15-3/16336800 10-3/18436810 101/4336630 10-1/4436890 10-3/8336850 5-3/8436825 5-1/2336540 5-1/2436855 10-3/32448845 5-1/8440485 5-3/16448585 5-1/4448625 PINE STICKS 36 48 1/81/813 1/81/41623 1/83/820 3/163/161724 3/163/82332 3/161/230 1/41/42637 1/43/83042 1/41/23447 3/83/83752 SPRUCE STICKS 36 48 1/8 1/815 1/8 1/41824 1/8 3/820 3/163/162534 1/4 1/43145 1/4 3/83650 3/8 3/84563 3/8 1/25570 1/2 1/28880 1/2 3/46888 SPRUCE TRIANGLES 3/83/8 1/21/2 3/4 3/4 36 45 61 77 HARD MAPLEIS 1/43/840 3/83/845 3/81/250 3/83/458 1/23/468 BIRCH DOWELS 1/8 3/16 1/4 5/16 3/8 3 PLY BIRCH 1/8412 1/3212 11612 1/812 36 09 11 14 26 32 48 525 425 435 450 SPLYBIRCH48 3/3212570 1/812585 3/1612585 1/412600 LONE STAR EPOXYINSTANTGLUE 9,L/s8951 z Thick298GROOVED LG MOUNTS rx/rr5881, Thi28812 Inches 15,/0982a Thick590LITE PLY483/83/4/1/8/40 30 er/n5982, Th5901/861 503/83/4/5/32/40 1/8123001/23/4/3/16/45 Handling ChargeS300 pay UPS Add $200 COD $300 extra PP APO FPO accept Visa Master Card personal checks COD 4-1/8% lao/n Texas US currency Minimum Order01O00 March 1985 49 Si WE ARE SHOOTING DOWN HIGH BALSA PRICES WITH SUPER QUALITY CUSTOM CUT CONTEST BALSA Sheets Piece ed Close Tolerances AAA Grade Dried ped 100% a serious modeler want performance must try 4-6 lb balsa f THE COMPETITIONS VIEW HE WINDSONG What makes Windsong best plane have deadair lightlift gusting 25 MPH winds thermal contest What makes windsong best plane r have x-country race Some say 17 1 ct ratio clean solidcore wing no spoiler bays urb airflow Others say Eppler 214 airfoil combined exclusive fullspan camber changing o capability including elevator compensated 80 degree flaps 0 N reflexible ailerons fact design innovations contribute Windsongs totaldesign concept its unprecedented performance WITH THEWIND SONG THE WHOLE IS TRULY GREATER THANTHE SUM OF ITS PARTSo Windsong 19995 Camano 15905Pixy 14995 Send 2 stamps catalog $25 VHSvideo tape SW CAMANO DRIVE CAMANO ISLAND WA 98292] N RC Aerobatics/Van Putte Continued page 129 pie Novice classification ace equals takeoff two straight flight out five stall turn draws three addi tional cards what represent will selected next higher Pattern classification So total nine maneuvers scored effort allow equal com petition few fliers different levels example could Novice score higher Procedure Turn Expert Figure M / Rolls dont know answered question lot fun Incidentally invited club 20 miles away 16 contestants Novice won first place Sportsman sec ond Advanced flier third got entire thing over 2/2 hours started eating difficulty need two three decks cards little extra help processing two rounds flight schedule stayed same luck played little part Some drew maneuvers liked others hated draw thought might interested am sounds like fun good ideas out send along about some good pic tures too Ron Van Putte ill Sleepy Oaks Rd Ft Walton Beach FL 32548 RC Scale/Wischers Continued page 49 some cases brought about because nose gear too short Bell Airacobra Kingcobra models having short nose gears ease problem tucking long retractable strut likely candidates treatment Ideally nose gear length should provide wing angle attack requires small amount rotation takeoff avoid damage long nose gear strut obliges pilot make landing mains nose-high position would typical prototype Minor changes main wheel loca tion fore aft trike-geared model sufficiently drastic seriously affect appearance true Scale viewpoint same small changes have magnified effect ground han dling amount control input needed transition ground alr Sport-type airplanes always tried place main wheel centers close behind models CG easy transition takeoff tail manually pushed downward ground supposed stay However arrangement caused crosswind taxiing problem mentioned previously Scale operation average A- A-scale model should have main wheel centers about /2 % rearward CG Careful attention nose gear strut length assures positive angle attack wing least 10 three wheels runway model can flown surface mini mum elevator control applied Douglas A-20G has about 40 angle attack measured wings chord line runway surface nose wheel carries about 5% models total weight Ground steering very positive Heavy up-elevator control needed certain landings main wheels first holding nose wheel above runway until mains make contact Homemade decals art decalco mania process transferring pic tures designs specially-prepared paper surface decorated instance Scale model airplane Insignia manufacturers logo small let ters numerals can painted inked blank decal paper Sources material Sig local decalprinting establishment 12 x 18 sheet listed Sig catalog 754 coated glue transparent film Using decal paper has great advantage over trying paint details directly models surfaces first attempt isnt satisfactory scrap paper can discarded no harm has come model favorite tool drawing decal paper draftsmans ruling SILICONE 10 foot coils TUBING ID 062 092 125us post S/coIl 235 265 325 54/COlL LARRY DODGE AERO INC 10210 1[LWATPD MN MflR2 n,.na LDHOODS Cereal ILD BLUE box Airplanes VONDE Fly Again Sesot Aprodotlen P40 Z5R0 -$500 -SAF FLITS MODELS Box 62M RoiIIe MI 48000 * SCALE DOCUMENTATION* SCALE DRAWINGSMODEL PLANS PHOTOS 1985 BOOKS EPLA-TECH INTERNATIONAL AIRPLANE CATALOG48500 MC KENZIE HWY $300VIDA OREGON 97488 132 Model Aviation UDODGSON DESIGNS 2904 PermaGrit TM Ufetime * Carbide Sanding Tools TUNGSTEN CARBIDE Mans hardest .., material next diamond. BRAZED TO made STEELU SA AverageFLAT TOOL Modelers 040 X 11/2 use balsa hard woods fiberglassbeaded foams epoxy fillers plexiglass WE DARE YOU TO TRY IT MONEY BACK GUARANTEEI FOR MAIL ORDERS ONLY checli M 0 ONLY $6 NoStsmps-NO COD SEE YOUR DEALER FIRST OR 5ENO FOR COMPLETE LIST OF 5 TOOLS SEND SSAE FOR COMPLETE LIST OF TOOLS DG PRODUCTS CO 209 Carrlands Dr Dayfon OH 45429 513 294-1192 lOhio res sdd 6% Tax Introducing. ZErebuil R/C die-Bar Glow Plugs Long Short$1 69 Also. Traditional line non-idle bar Glow Plugs Six Types 3 Heat Ranges High Performance Glow Element Blow Proof Seal Only $129 Swanson Associates PO Box 151 Wayne NJ7948 07470 pen circles same type pen inserted draftsmans bow compass India ink can used black lettering other colors enamels can used thinning slightly Too much thinner enamel will flow out pen nib quickly leaving wide blob decal Too little will no flow Use ruling pen draw outlines area inked painted No attempt should made freehand unless modeler skilled artist us arent pen should always guided straight edge tool some kind preference draftsmans plastic triangle After outlines have drawn inner areas can filled fine-tipped artists brushes using ruling pen paint brush Flat enamels bit easier work glossy decal art work will overcoated later give desired degree gloss Humbrol paints hobby shop work well Lettering numerals smaller about A-in high require meticulous care produced above method Much easieralso much expen siveare rub-on letters numerals used graphic art industry come semi-transparent sheets individual characters placed over desired spot rubbed stylus character loosens its grip sheet adheres surface being applied can done directly model surface hard doesnt work too well open fabric areas model Should letter number improperly placed can quite readily lifted off cellophane adhesive tape task alignment considerably facilitated working flat surface using decal paper rather model itself Rub-on charac ters available art display upply stores variety styles iizes seems infinite Whether produced ruling pen ink paint rub-on letters freehand methods art work will need pro tected abuse fuel Most insignias markings models arent iubjected attack model fuel possibility exists best protect art handiwork clear epoxy can sprayed over decal surface before cut sheet Using proper amount gloss flat hardener mixture both can produce surface will match surrounding area model make decal edges invisible decal cut close possi ble edge art work Light coats epoxy avoid thick buildup will help disguise edges Polyurethane varnish can also used overcoat lacks control over degree gloss flatness attained clear epoxy another method using decal paper make transfers Simply spray sheet color enamel dope re quired followed clear epoxy treat ment spray color epoxy Turn dried sheet over pencil letters numerals reverse side characters made backwards course cut out individual character After soaking water usual thirty seconds characters need careful ly slid off paper backing onto models surface very soft loose drop water will aid straight ening bends occur also will help attain exact alignment previ ous numeral have used method sizes printed material models including large license AMA numbers wing method can also employed apply decorative stripes Decal sheet has limitation may foil efforts smooth coverage doesnt like follow compound curves because lacquer backing solid sheet However lacquer can softened get some degree conformity using Hobsco Solvaset Krasel Super Microset over decal before glue hardens clear liquids hobby shop items soften decal will conform uneven surface such rivet impres sions panel lines Hobbypoxy colors US insignia coors latest release Petit Paint Co makers Hobbypoxy Refer ence material indicates FS 11136 gloss FS 31136 matte official specifications Insignia Red Official specs Insignia White FS 17875 gloss FS 37875 matte identical white used undersur faces US Naval aircraft published earlier repeated Two other FS numbers 37855 37886 close matches white two official shades Insignia Blue original color FS 15044 gloss FS 35044 matte both USAAF USN before during WW II Toward very end war during Korean conflict Navy aircraft gave up matte two-color finish favor overall gloss Sea Blue FS 15042 published previous column repeated Aircraft fin ished manner used Sea Blue instead Insignia Blue national markings since two colors similar formulas Insignia Red FS 11136 gloss FS 31136 matte15 parts H66 Dark Red part H65 Bright Red Insignia White FS 17875 gloss FS 37875 matteto pint HlO White 10 drops H81 Black six drops H49 Cub Yellow four drops H33 Stinson Green Insignia Blue FS 15044 gloss FS 35044 mattethree parts H24 Dark Blue two parts H67 Maroon part H61 Black Insignia Blue Sea Blue FS 15042 gloss onlythree parts H81 Black two parts H33 Stinson Green part Dark Blue New plans Norm Rosenstock has offering plans A-scale Waco Cabin HKS-7 Great Lakes Trainer has recently redrawn plans both A-scale four-stroke engines specifically mind Waco 748 wingspan Great Lakes 64 also offers cowlings both Waco plans available immediately GL will come later Data Waco Scale 2% span 748 wing area 1200 sq engine 90 two-stroke 120 four-stroke weight 12 14 lb Write Norm Rosenstock 94 Cedar Drive Plainview NY 11803 Bob Dolly Wischer 5-221 Lapham Peak Rd Delafield WI 53018 March 1985 133
Edition: Model Aviation - 1985/03
Page Numbers: 48, 49, 132, 133
Edition: Model Aviation - 1985/03
Page Numbers: 48, 49, 132, 133
Radio Control Scale Bob & Dolly Wischer LANDING GEAR LOCATION letter reader raised question effect ground handling takeoff landing wheel centers displaced forward aft optimum location Experience tells us wheels too far forward sometimes tendency model ground ioop divert straight path takeoff landing result wing tip will touch ground worst condition encountered situation could alternate scraping both wing tips model eventually going over its back can lead messy repair particularly biplane Airplanes susceptible ground looping tail skids wheels far ahead center-of-gravity Examples some WW types have wheels far forward almost under neath engine effectively control such model requires quick deft handling rudder helpful stand directly behind model take off Excursions right left quickly detected position rudder corrections can made stop tendency swing off course have also found necessary use bit up-elevator keep tail skid contact runway until speed builds point rudder becomes effective Standing behind model during two Reno Nats L Roland Baltes modified Jemco kit Republic P-47N Thunderbolt Finished Aero Gloss dope uses OS 61 engIne weighs 11 lb Baltes photo George Millers Republic A-i 0 Warthog R used twin Turbax II fan units K&B 75cc engines equipped MACS ducted-fan pipes scratch-built Koku-Fan drawings 1/10-scale Model weighs 20 lb has RC-controlled canopy actuation Main gear units homemade retracts nose gear Dave Brown item Seen England L Brian PeckflamsAvro BabyTlieswitfl Enya 9Otour-stroke power builttoa scaleoti /48 weighs9/2 lb Finish K&B epoxy over Solartex R Peter McDermotts 1/5-scale Fly Baby has 0560 four-stroke weighs 71/2 lb Finished Humbrol overSolartex Still England L Cohn Moss used Tapsfield drawings construct Hawk Pshaw version Myers Little Toot uses Webra Speed 61 power weighs 10 lb has enamel finish R Look complex rigging double-bay biplane 1/5-scale Nieuport Nighthawk Martin Fardell Span post-WW British fighter 66 weight 101/2 lb Finish uses nylon cover nitrate dope Powermax paint K&B satin topcoat Nestled somewhere dummy engine 05 80 four-stroke engine 48 Model Aviation landing isnt easily achieved model would need approach its touchdown passing over pilots heada decidedly awkward circumstance best models approach path should pass pilot quite closely afford rear view lands seems easiest avoid landing ground loop model touches down main wheels rather attempted three-point landing isnt whole lot done about changing more-rearward wheel loca tion seriously affecting Scale appearance have seen WW Nieuports other aircraft having ward wheel centers flown reasonable success spite prob lem Pilots develop necessary skill learn best longitudinal attitude leaving approaching runway type plane being flown Propeller wash can stabilizing influence helps keep rudder authoritative problem minimized using engine adequate output Later airplanes main wheels spaced forward usually tailwheels longer tail moment arms tendency ground loop reduced because greater weight tailwheel maintains contact runway until sufficient speed built up fin rud der take over duty directional control landing type model tendency ground loop will greatest point tailwheel just about touch runway already touching little weight upon synchronized bit up-elevator par tially applied throttle can increase direc tional control pressing tailwheel down firmly Too much treatment model becomes air borne again rear view takeoff landing also helpful type model Deliberately moving wheels rear ward upward changing landing gear shape will detected anyone critical eye Scale appearance Small changes derive doubtful benefit see numerous models otherwise correct outlines Scale abominations because serious landing sear faults shape height position have tampered reason anotherand sometimes reason Treaded tires should smooth incorrect tread pattern wheel hubs wrong shape diameter other common flaws prominent Scale feature cant drastically altered penal ty Scale appearance exceptions non-altera tion rule however An example would airplane landing gear too far rearward such deHavilland 71 racer full-size DH may have propensity nose over two racers built find nothing written history warn mod eler problem Moving models wheel centers about A-in forward would great help avoiding inevitable nose-over end landing run grass small change undoubtedly detectable airplanes charac ter remains nearly unchanged Obviously fault needs corrected design stage modeling could easily overlooked model Tricycle gears also susceptible problems regard placement models As rule placing wheel cen ters relative center gravity should correct full-size plane copied accu rately main gear wheels too far forward near CG load nose wheel reduced model becomes impossible taxi crosswind wind will cause weathervaning nose wheel skids sideways However forward location main gear produc es best takeoff landing properties Moving mains rearward away CG adds load nose wheel positive steering ground another problem follows takeoff model builds speed find con siderable Up-elevator control input needed rotate wing lifting angle attack instant enough lift generated model leaps unrealistical ly air too steep climb angle Continued Page 132 Satisfaction Guaranteed Direct Only BALSA SHEETS 36 45 30 BALSA STICKS 36 45 1/162331/16 1/409 3/32r2401/16 3/810 1/8 2431/16 1/214 3/162493/32 1410 1/4 2563/32 3812 1/323373/32 1/216 1/203371/8 1808 1/1633748311/8 141116 3/3234450371/8 3/81218 1/8 35471451/8 1/21024 3/1636282553/163/161116 114 37390613/16 3/817 5/163853/16 1/22230 3/8 3881247114 1/41624 1/2 311015514 381926 3/4 31651/4 1/22130 1/1645676481/4 3/43444 3/3247004561/4 140 1/5 480106665/165/162126 3/16493122753/8 3/82737 114 4110134843/8 1/23246 3/8 41652253/8 3/44255 1/2 42252013/8 152 MATCHED SHEETS4212 123653 12344662 332410012 158 164108585846 310412034 3487 144131 BALSA HOT LINE Call 806 745-6394 10am -6pm Central Time LONE STAR MODELS 1623 57th St Lubbock TX 79412 --LIGHT 4-6 LB BALSA TRIANGLES 36WOOD36 1/414251/32349 3/8 3/8301/20349 1/21/2341/16349 3/43/4453/32356 11551/8367 3/16376 BALSAPLANKS361/4385 11853/83115 121501/23139 132003/43220 1428013300 11/232751/16478 11/24360332491 222251/84100 233253/164117 244351/44138 334953/84207 346881/24282 TAPERED SHEETS36 1/4265TRAILING EDGE36 1/43851/4132 3/82685/1611/438 3/83983/811/246 1/231201/2270 BASSWOOD 3/163/16 3/16 1/4 3/163/8 3/161/2 3/163/4 1/41/4 1/43/8 1/43/4 3/8 3/8 3/8 1/2 3/83/4 1/21/2 1/23/4 46 26 30 38 46 88 42 49 80 60 70 80 00 100 BUNDLE DEALS 20-1/8336685 20-1/164361020 203/32338845 15-3/32436855 15-1/8336715 101/8436675 15-3/16336800 10-3/18436810 101/4336630 10-1/4436890 10-3/8336850 5-3/8436825 5-1/2336540 5-1/2436855 10-3/32448845 5-1/8440485 5-3/16448585 5-1/4448625 PINE STICKS 36 48 1/81/813 1/81/41623 1/83/820 3/163/161724 3/163/82332 3/161/230 1/41/42637 1/43/83042 1/41/23447 3/83/83752 SPRUCE STICKS 36 48 1/8 1/815 1/8 1/41824 1/8 3/820 3/163/162534 1/4 1/43145 1/4 3/83650 3/8 3/84563 3/8 1/25570 1/2 1/28880 1/2 3/46888 SPRUCE TRIANGLES 3/83/8 1/21/2 3/4 3/4 36 45 61 77 HARD MAPLEIS 1/43/840 3/83/845 3/81/250 3/83/458 1/23/468 BIRCH DOWELS 1/8 3/16 1/4 5/16 3/8 3 PLY BIRCH 1/8412 1/3212 11612 1/812 36 09 11 14 26 32 48 525 425 435 450 SPLYBIRCH48 3/3212570 1/812585 3/1612585 1/412600 LONE STAR EPOXYINSTANTGLUE 9,L/s8951 z Thick298GROOVED LG MOUNTS rx/rr5881, Thi28812 Inches 15,/0982a Thick590LITE PLY483/83/4/1/8/40 30 er/n5982, Th5901/861 503/83/4/5/32/40 1/8123001/23/4/3/16/45 Handling ChargeS300 pay UPS Add $200 COD $300 extra PP APO FPO accept Visa Master Card personal checks COD 4-1/8% lao/n Texas US currency Minimum Order01O00 March 1985 49 Si WE ARE SHOOTING DOWN HIGH BALSA PRICES WITH SUPER QUALITY CUSTOM CUT CONTEST BALSA Sheets Piece ed Close Tolerances AAA Grade Dried ped 100% a serious modeler want performance must try 4-6 lb balsa f THE COMPETITIONS VIEW HE WINDSONG What makes Windsong best plane have deadair lightlift gusting 25 MPH winds thermal contest What makes windsong best plane r have x-country race Some say 17 1 ct ratio clean solidcore wing no spoiler bays urb airflow Others say Eppler 214 airfoil combined exclusive fullspan camber changing o capability including elevator compensated 80 degree flaps 0 N reflexible ailerons fact design innovations contribute Windsongs totaldesign concept its unprecedented performance WITH THEWIND SONG THE WHOLE IS TRULY GREATER THANTHE SUM OF ITS PARTSo Windsong 19995 Camano 15905Pixy 14995 Send 2 stamps catalog $25 VHSvideo tape SW CAMANO DRIVE CAMANO ISLAND WA 98292] N RC Aerobatics/Van Putte Continued page 129 pie Novice classification ace equals takeoff two straight flight out five stall turn draws three addi tional cards what represent will selected next higher Pattern classification So total nine maneuvers scored effort allow equal com petition few fliers different levels example could Novice score higher Procedure Turn Expert Figure M / Rolls dont know answered question lot fun Incidentally invited club 20 miles away 16 contestants Novice won first place Sportsman sec ond Advanced flier third got entire thing over 2/2 hours started eating difficulty need two three decks cards little extra help processing two rounds flight schedule stayed same luck played little part Some drew maneuvers liked others hated draw thought might interested am sounds like fun good ideas out send along about some good pic tures too Ron Van Putte ill Sleepy Oaks Rd Ft Walton Beach FL 32548 RC Scale/Wischers Continued page 49 some cases brought about because nose gear too short Bell Airacobra Kingcobra models having short nose gears ease problem tucking long retractable strut likely candidates treatment Ideally nose gear length should provide wing angle attack requires small amount rotation takeoff avoid damage long nose gear strut obliges pilot make landing mains nose-high position would typical prototype Minor changes main wheel loca tion fore aft trike-geared model sufficiently drastic seriously affect appearance true Scale viewpoint same small changes have magnified effect ground han dling amount control input needed transition ground alr Sport-type airplanes always tried place main wheel centers close behind models CG easy transition takeoff tail manually pushed downward ground supposed stay However arrangement caused crosswind taxiing problem mentioned previously Scale operation average A- A-scale model should have main wheel centers about /2 % rearward CG Careful attention nose gear strut length assures positive angle attack wing least 10 three wheels runway model can flown surface mini mum elevator control applied Douglas A-20G has about 40 angle attack measured wings chord line runway surface nose wheel carries about 5% models total weight Ground steering very positive Heavy up-elevator control needed certain landings main wheels first holding nose wheel above runway until mains make contact Homemade decals art decalco mania process transferring pic tures designs specially-prepared paper surface decorated instance Scale model airplane Insignia manufacturers logo small let ters numerals can painted inked blank decal paper Sources material Sig local decalprinting establishment 12 x 18 sheet listed Sig catalog 754 coated glue transparent film Using decal paper has great advantage over trying paint details directly models surfaces first attempt isnt satisfactory scrap paper can discarded no harm has come model favorite tool drawing decal paper draftsmans ruling SILICONE 10 foot coils TUBING ID 062 092 125us post S/coIl 235 265 325 54/COlL LARRY DODGE AERO INC 10210 1[LWATPD MN MflR2 n,.na LDHOODS Cereal ILD BLUE box Airplanes VONDE Fly Again Sesot Aprodotlen P40 Z5R0 -$500 -SAF FLITS MODELS Box 62M RoiIIe MI 48000 * SCALE DOCUMENTATION* SCALE DRAWINGSMODEL PLANS PHOTOS 1985 BOOKS EPLA-TECH INTERNATIONAL AIRPLANE CATALOG48500 MC KENZIE HWY $300VIDA OREGON 97488 132 Model Aviation UDODGSON DESIGNS 2904 PermaGrit TM Ufetime * Carbide Sanding Tools TUNGSTEN CARBIDE Mans hardest .., material next diamond. BRAZED TO made STEELU SA AverageFLAT TOOL Modelers 040 X 11/2 use balsa hard woods fiberglassbeaded foams epoxy fillers plexiglass WE DARE YOU TO TRY IT MONEY BACK GUARANTEEI FOR MAIL ORDERS ONLY checli M 0 ONLY $6 NoStsmps-NO COD SEE YOUR DEALER FIRST OR 5ENO FOR COMPLETE LIST OF 5 TOOLS SEND SSAE FOR COMPLETE LIST OF TOOLS DG PRODUCTS CO 209 Carrlands Dr Dayfon OH 45429 513 294-1192 lOhio res sdd 6% Tax Introducing. ZErebuil R/C die-Bar Glow Plugs Long Short$1 69 Also. Traditional line non-idle bar Glow Plugs Six Types 3 Heat Ranges High Performance Glow Element Blow Proof Seal Only $129 Swanson Associates PO Box 151 Wayne NJ7948 07470 pen circles same type pen inserted draftsmans bow compass India ink can used black lettering other colors enamels can used thinning slightly Too much thinner enamel will flow out pen nib quickly leaving wide blob decal Too little will no flow Use ruling pen draw outlines area inked painted No attempt should made freehand unless modeler skilled artist us arent pen should always guided straight edge tool some kind preference draftsmans plastic triangle After outlines have drawn inner areas can filled fine-tipped artists brushes using ruling pen paint brush Flat enamels bit easier work glossy decal art work will overcoated later give desired degree gloss Humbrol paints hobby shop work well Lettering numerals smaller about A-in high require meticulous care produced above method Much easieralso much expen siveare rub-on letters numerals used graphic art industry come semi-transparent sheets individual characters placed over desired spot rubbed stylus character loosens its grip sheet adheres surface being applied can done directly model surface hard doesnt work too well open fabric areas model Should letter number improperly placed can quite readily lifted off cellophane adhesive tape task alignment considerably facilitated working flat surface using decal paper rather model itself Rub-on charac ters available art display upply stores variety styles iizes seems infinite Whether produced ruling pen ink paint rub-on letters freehand methods art work will need pro tected abuse fuel Most insignias markings models arent iubjected attack model fuel possibility exists best protect art handiwork clear epoxy can sprayed over decal surface before cut sheet Using proper amount gloss flat hardener mixture both can produce surface will match surrounding area model make decal edges invisible decal cut close possi ble edge art work Light coats epoxy avoid thick buildup will help disguise edges Polyurethane varnish can also used overcoat lacks control over degree gloss flatness attained clear epoxy another method using decal paper make transfers Simply spray sheet color enamel dope re quired followed clear epoxy treat ment spray color epoxy Turn dried sheet over pencil letters numerals reverse side characters made backwards course cut out individual character After soaking water usual thirty seconds characters need careful ly slid off paper backing onto models surface very soft loose drop water will aid straight ening bends occur also will help attain exact alignment previ ous numeral have used method sizes printed material models including large license AMA numbers wing method can also employed apply decorative stripes Decal sheet has limitation may foil efforts smooth coverage doesnt like follow compound curves because lacquer backing solid sheet However lacquer can softened get some degree conformity using Hobsco Solvaset Krasel Super Microset over decal before glue hardens clear liquids hobby shop items soften decal will conform uneven surface such rivet impres sions panel lines Hobbypoxy colors US insignia coors latest release Petit Paint Co makers Hobbypoxy Refer ence material indicates FS 11136 gloss FS 31136 matte official specifications Insignia Red Official specs Insignia White FS 17875 gloss FS 37875 matte identical white used undersur faces US Naval aircraft published earlier repeated Two other FS numbers 37855 37886 close matches white two official shades Insignia Blue original color FS 15044 gloss FS 35044 matte both USAAF USN before during WW II Toward very end war during Korean conflict Navy aircraft gave up matte two-color finish favor overall gloss Sea Blue FS 15042 published previous column repeated Aircraft fin ished manner used Sea Blue instead Insignia Blue national markings since two colors similar formulas Insignia Red FS 11136 gloss FS 31136 matte15 parts H66 Dark Red part H65 Bright Red Insignia White FS 17875 gloss FS 37875 matteto pint HlO White 10 drops H81 Black six drops H49 Cub Yellow four drops H33 Stinson Green Insignia Blue FS 15044 gloss FS 35044 mattethree parts H24 Dark Blue two parts H67 Maroon part H61 Black Insignia Blue Sea Blue FS 15042 gloss onlythree parts H81 Black two parts H33 Stinson Green part Dark Blue New plans Norm Rosenstock has offering plans A-scale Waco Cabin HKS-7 Great Lakes Trainer has recently redrawn plans both A-scale four-stroke engines specifically mind Waco 748 wingspan Great Lakes 64 also offers cowlings both Waco plans available immediately GL will come later Data Waco Scale 2% span 748 wing area 1200 sq engine 90 two-stroke 120 four-stroke weight 12 14 lb Write Norm Rosenstock 94 Cedar Drive Plainview NY 11803 Bob Dolly Wischer 5-221 Lapham Peak Rd Delafield WI 53018 March 1985 133
Edition: Model Aviation - 1985/03
Page Numbers: 48, 49, 132, 133
Radio Control Scale Bob & Dolly Wischer LANDING GEAR LOCATION letter reader raised question effect ground handling takeoff landing wheel centers displaced forward aft optimum location Experience tells us wheels too far forward sometimes tendency model ground ioop divert straight path takeoff landing result wing tip will touch ground worst condition encountered situation could alternate scraping both wing tips model eventually going over its back can lead messy repair particularly biplane Airplanes susceptible ground looping tail skids wheels far ahead center-of-gravity Examples some WW types have wheels far forward almost under neath engine effectively control such model requires quick deft handling rudder helpful stand directly behind model take off Excursions right left quickly detected position rudder corrections can made stop tendency swing off course have also found necessary use bit up-elevator keep tail skid contact runway until speed builds point rudder becomes effective Standing behind model during two Reno Nats L Roland Baltes modified Jemco kit Republic P-47N Thunderbolt Finished Aero Gloss dope uses OS 61 engIne weighs 11 lb Baltes photo George Millers Republic A-i 0 Warthog R used twin Turbax II fan units K&B 75cc engines equipped MACS ducted-fan pipes scratch-built Koku-Fan drawings 1/10-scale Model weighs 20 lb has RC-controlled canopy actuation Main gear units homemade retracts nose gear Dave Brown item Seen England L Brian PeckflamsAvro BabyTlieswitfl Enya 9Otour-stroke power builttoa scaleoti /48 weighs9/2 lb Finish K&B epoxy over Solartex R Peter McDermotts 1/5-scale Fly Baby has 0560 four-stroke weighs 71/2 lb Finished Humbrol overSolartex Still England L Cohn Moss used Tapsfield drawings construct Hawk Pshaw version Myers Little Toot uses Webra Speed 61 power weighs 10 lb has enamel finish R Look complex rigging double-bay biplane 1/5-scale Nieuport Nighthawk Martin Fardell Span post-WW British fighter 66 weight 101/2 lb Finish uses nylon cover nitrate dope Powermax paint K&B satin topcoat Nestled somewhere dummy engine 05 80 four-stroke engine 48 Model Aviation landing isnt easily achieved model would need approach its touchdown passing over pilots heada decidedly awkward circumstance best models approach path should pass pilot quite closely afford rear view lands seems easiest avoid landing ground loop model touches down main wheels rather attempted three-point landing isnt whole lot done about changing more-rearward wheel loca tion seriously affecting Scale appearance have seen WW Nieuports other aircraft having ward wheel centers flown reasonable success spite prob lem Pilots develop necessary skill learn best longitudinal attitude leaving approaching runway type plane being flown Propeller wash can stabilizing influence helps keep rudder authoritative problem minimized using engine adequate output Later airplanes main wheels spaced forward usually tailwheels longer tail moment arms tendency ground loop reduced because greater weight tailwheel maintains contact runway until sufficient speed built up fin rud der take over duty directional control landing type model tendency ground loop will greatest point tailwheel just about touch runway already touching little weight upon synchronized bit up-elevator par tially applied throttle can increase direc tional control pressing tailwheel down firmly Too much treatment model becomes air borne again rear view takeoff landing also helpful type model Deliberately moving wheels rear ward upward changing landing gear shape will detected anyone critical eye Scale appearance Small changes derive doubtful benefit see numerous models otherwise correct outlines Scale abominations because serious landing sear faults shape height position have tampered reason anotherand sometimes reason Treaded tires should smooth incorrect tread pattern wheel hubs wrong shape diameter other common flaws prominent Scale feature cant drastically altered penal ty Scale appearance exceptions non-altera tion rule however An example would airplane landing gear too far rearward such deHavilland 71 racer full-size DH may have propensity nose over two racers built find nothing written history warn mod eler problem Moving models wheel centers about A-in forward would great help avoiding inevitable nose-over end landing run grass small change undoubtedly detectable airplanes charac ter remains nearly unchanged Obviously fault needs corrected design stage modeling could easily overlooked model Tricycle gears also susceptible problems regard placement models As rule placing wheel cen ters relative center gravity should correct full-size plane copied accu rately main gear wheels too far forward near CG load nose wheel reduced model becomes impossible taxi crosswind wind will cause weathervaning nose wheel skids sideways However forward location main gear produc es best takeoff landing properties Moving mains rearward away CG adds load nose wheel positive steering ground another problem follows takeoff model builds speed find con siderable Up-elevator control input needed rotate wing lifting angle attack instant enough lift generated model leaps unrealistical ly air too steep climb angle Continued Page 132 Satisfaction Guaranteed Direct Only BALSA SHEETS 36 45 30 BALSA STICKS 36 45 1/162331/16 1/409 3/32r2401/16 3/810 1/8 2431/16 1/214 3/162493/32 1410 1/4 2563/32 3812 1/323373/32 1/216 1/203371/8 1808 1/1633748311/8 141116 3/3234450371/8 3/81218 1/8 35471451/8 1/21024 3/1636282553/163/161116 114 37390613/16 3/817 5/163853/16 1/22230 3/8 3881247114 1/41624 1/2 311015514 381926 3/4 31651/4 1/22130 1/1645676481/4 3/43444 3/3247004561/4 140 1/5 480106665/165/162126 3/16493122753/8 3/82737 114 4110134843/8 1/23246 3/8 41652253/8 3/44255 1/2 42252013/8 152 MATCHED SHEETS4212 123653 12344662 332410012 158 164108585846 310412034 3487 144131 BALSA HOT LINE Call 806 745-6394 10am -6pm Central Time LONE STAR MODELS 1623 57th St Lubbock TX 79412 --LIGHT 4-6 LB BALSA TRIANGLES 36WOOD36 1/414251/32349 3/8 3/8301/20349 1/21/2341/16349 3/43/4453/32356 11551/8367 3/16376 BALSAPLANKS361/4385 11853/83115 121501/23139 132003/43220 1428013300 11/232751/16478 11/24360332491 222251/84100 233253/164117 244351/44138 334953/84207 346881/24282 TAPERED SHEETS36 1/4265TRAILING EDGE36 1/43851/4132 3/82685/1611/438 3/83983/811/246 1/231201/2270 BASSWOOD 3/163/16 3/16 1/4 3/163/8 3/161/2 3/163/4 1/41/4 1/43/8 1/43/4 3/8 3/8 3/8 1/2 3/83/4 1/21/2 1/23/4 46 26 30 38 46 88 42 49 80 60 70 80 00 100 BUNDLE DEALS 20-1/8336685 20-1/164361020 203/32338845 15-3/32436855 15-1/8336715 101/8436675 15-3/16336800 10-3/18436810 101/4336630 10-1/4436890 10-3/8336850 5-3/8436825 5-1/2336540 5-1/2436855 10-3/32448845 5-1/8440485 5-3/16448585 5-1/4448625 PINE STICKS 36 48 1/81/813 1/81/41623 1/83/820 3/163/161724 3/163/82332 3/161/230 1/41/42637 1/43/83042 1/41/23447 3/83/83752 SPRUCE STICKS 36 48 1/8 1/815 1/8 1/41824 1/8 3/820 3/163/162534 1/4 1/43145 1/4 3/83650 3/8 3/84563 3/8 1/25570 1/2 1/28880 1/2 3/46888 SPRUCE TRIANGLES 3/83/8 1/21/2 3/4 3/4 36 45 61 77 HARD MAPLEIS 1/43/840 3/83/845 3/81/250 3/83/458 1/23/468 BIRCH DOWELS 1/8 3/16 1/4 5/16 3/8 3 PLY BIRCH 1/8412 1/3212 11612 1/812 36 09 11 14 26 32 48 525 425 435 450 SPLYBIRCH48 3/3212570 1/812585 3/1612585 1/412600 LONE STAR EPOXYINSTANTGLUE 9,L/s8951 z Thick298GROOVED LG MOUNTS rx/rr5881, Thi28812 Inches 15,/0982a Thick590LITE PLY483/83/4/1/8/40 30 er/n5982, Th5901/861 503/83/4/5/32/40 1/8123001/23/4/3/16/45 Handling ChargeS300 pay UPS Add $200 COD $300 extra PP APO FPO accept Visa Master Card personal checks COD 4-1/8% lao/n Texas US currency Minimum Order01O00 March 1985 49 Si WE ARE SHOOTING DOWN HIGH BALSA PRICES WITH SUPER QUALITY CUSTOM CUT CONTEST BALSA Sheets Piece ed Close Tolerances AAA Grade Dried ped 100% a serious modeler want performance must try 4-6 lb balsa f THE COMPETITIONS VIEW HE WINDSONG What makes Windsong best plane have deadair lightlift gusting 25 MPH winds thermal contest What makes windsong best plane r have x-country race Some say 17 1 ct ratio clean solidcore wing no spoiler bays urb airflow Others say Eppler 214 airfoil combined exclusive fullspan camber changing o capability including elevator compensated 80 degree flaps 0 N reflexible ailerons fact design innovations contribute Windsongs totaldesign concept its unprecedented performance WITH THEWIND SONG THE WHOLE IS TRULY GREATER THANTHE SUM OF ITS PARTSo Windsong 19995 Camano 15905Pixy 14995 Send 2 stamps catalog $25 VHSvideo tape SW CAMANO DRIVE CAMANO ISLAND WA 98292] N RC Aerobatics/Van Putte Continued page 129 pie Novice classification ace equals takeoff two straight flight out five stall turn draws three addi tional cards what represent will selected next higher Pattern classification So total nine maneuvers scored effort allow equal com petition few fliers different levels example could Novice score higher Procedure Turn Expert Figure M / Rolls dont know answered question lot fun Incidentally invited club 20 miles away 16 contestants Novice won first place Sportsman sec ond Advanced flier third got entire thing over 2/2 hours started eating difficulty need two three decks cards little extra help processing two rounds flight schedule stayed same luck played little part Some drew maneuvers liked others hated draw thought might interested am sounds like fun good ideas out send along about some good pic tures too Ron Van Putte ill Sleepy Oaks Rd Ft Walton Beach FL 32548 RC Scale/Wischers Continued page 49 some cases brought about because nose gear too short Bell Airacobra Kingcobra models having short nose gears ease problem tucking long retractable strut likely candidates treatment Ideally nose gear length should provide wing angle attack requires small amount rotation takeoff avoid damage long nose gear strut obliges pilot make landing mains nose-high position would typical prototype Minor changes main wheel loca tion fore aft trike-geared model sufficiently drastic seriously affect appearance true Scale viewpoint same small changes have magnified effect ground han dling amount control input needed transition ground alr Sport-type airplanes always tried place main wheel centers close behind models CG easy transition takeoff tail manually pushed downward ground supposed stay However arrangement caused crosswind taxiing problem mentioned previously Scale operation average A- A-scale model should have main wheel centers about /2 % rearward CG Careful attention nose gear strut length assures positive angle attack wing least 10 three wheels runway model can flown surface mini mum elevator control applied Douglas A-20G has about 40 angle attack measured wings chord line runway surface nose wheel carries about 5% models total weight Ground steering very positive Heavy up-elevator control needed certain landings main wheels first holding nose wheel above runway until mains make contact Homemade decals art decalco mania process transferring pic tures designs specially-prepared paper surface decorated instance Scale model airplane Insignia manufacturers logo small let ters numerals can painted inked blank decal paper Sources material Sig local decalprinting establishment 12 x 18 sheet listed Sig catalog 754 coated glue transparent film Using decal paper has great advantage over trying paint details directly models surfaces first attempt isnt satisfactory scrap paper can discarded no harm has come model favorite tool drawing decal paper draftsmans ruling SILICONE 10 foot coils TUBING ID 062 092 125us post S/coIl 235 265 325 54/COlL LARRY DODGE AERO INC 10210 1[LWATPD MN MflR2 n,.na LDHOODS Cereal ILD BLUE box Airplanes VONDE Fly Again Sesot Aprodotlen P40 Z5R0 -$500 -SAF FLITS MODELS Box 62M RoiIIe MI 48000 * SCALE DOCUMENTATION* SCALE DRAWINGSMODEL PLANS PHOTOS 1985 BOOKS EPLA-TECH INTERNATIONAL AIRPLANE CATALOG48500 MC KENZIE HWY $300VIDA OREGON 97488 132 Model Aviation UDODGSON DESIGNS 2904 PermaGrit TM Ufetime * Carbide Sanding Tools TUNGSTEN CARBIDE Mans hardest .., material next diamond. BRAZED TO made STEELU SA AverageFLAT TOOL Modelers 040 X 11/2 use balsa hard woods fiberglassbeaded foams epoxy fillers plexiglass WE DARE YOU TO TRY IT MONEY BACK GUARANTEEI FOR MAIL ORDERS ONLY checli M 0 ONLY $6 NoStsmps-NO COD SEE YOUR DEALER FIRST OR 5ENO FOR COMPLETE LIST OF 5 TOOLS SEND SSAE FOR COMPLETE LIST OF TOOLS DG PRODUCTS CO 209 Carrlands Dr Dayfon OH 45429 513 294-1192 lOhio res sdd 6% Tax Introducing. ZErebuil R/C die-Bar Glow Plugs Long Short$1 69 Also. Traditional line non-idle bar Glow Plugs Six Types 3 Heat Ranges High Performance Glow Element Blow Proof Seal Only $129 Swanson Associates PO Box 151 Wayne NJ7948 07470 pen circles same type pen inserted draftsmans bow compass India ink can used black lettering other colors enamels can used thinning slightly Too much thinner enamel will flow out pen nib quickly leaving wide blob decal Too little will no flow Use ruling pen draw outlines area inked painted No attempt should made freehand unless modeler skilled artist us arent pen should always guided straight edge tool some kind preference draftsmans plastic triangle After outlines have drawn inner areas can filled fine-tipped artists brushes using ruling pen paint brush Flat enamels bit easier work glossy decal art work will overcoated later give desired degree gloss Humbrol paints hobby shop work well Lettering numerals smaller about A-in high require meticulous care produced above method Much easieralso much expen siveare rub-on letters numerals used graphic art industry come semi-transparent sheets individual characters placed over desired spot rubbed stylus character loosens its grip sheet adheres surface being applied can done directly model surface hard doesnt work too well open fabric areas model Should letter number improperly placed can quite readily lifted off cellophane adhesive tape task alignment considerably facilitated working flat surface using decal paper rather model itself Rub-on charac ters available art display upply stores variety styles iizes seems infinite Whether produced ruling pen ink paint rub-on letters freehand methods art work will need pro tected abuse fuel Most insignias markings models arent iubjected attack model fuel possibility exists best protect art handiwork clear epoxy can sprayed over decal surface before cut sheet Using proper amount gloss flat hardener mixture both can produce surface will match surrounding area model make decal edges invisible decal cut close possi ble edge art work Light coats epoxy avoid thick buildup will help disguise edges Polyurethane varnish can also used overcoat lacks control over degree gloss flatness attained clear epoxy another method using decal paper make transfers Simply spray sheet color enamel dope re quired followed clear epoxy treat ment spray color epoxy Turn dried sheet over pencil letters numerals reverse side characters made backwards course cut out individual character After soaking water usual thirty seconds characters need careful ly slid off paper backing onto models surface very soft loose drop water will aid straight ening bends occur also will help attain exact alignment previ ous numeral have used method sizes printed material models including large license AMA numbers wing method can also employed apply decorative stripes Decal sheet has limitation may foil efforts smooth coverage doesnt like follow compound curves because lacquer backing solid sheet However lacquer can softened get some degree conformity using Hobsco Solvaset Krasel Super Microset over decal before glue hardens clear liquids hobby shop items soften decal will conform uneven surface such rivet impres sions panel lines Hobbypoxy colors US insignia coors latest release Petit Paint Co makers Hobbypoxy Refer ence material indicates FS 11136 gloss FS 31136 matte official specifications Insignia Red Official specs Insignia White FS 17875 gloss FS 37875 matte identical white used undersur faces US Naval aircraft published earlier repeated Two other FS numbers 37855 37886 close matches white two official shades Insignia Blue original color FS 15044 gloss FS 35044 matte both USAAF USN before during WW II Toward very end war during Korean conflict Navy aircraft gave up matte two-color finish favor overall gloss Sea Blue FS 15042 published previous column repeated Aircraft fin ished manner used Sea Blue instead Insignia Blue national markings since two colors similar formulas Insignia Red FS 11136 gloss FS 31136 matte15 parts H66 Dark Red part H65 Bright Red Insignia White FS 17875 gloss FS 37875 matteto pint HlO White 10 drops H81 Black six drops H49 Cub Yellow four drops H33 Stinson Green Insignia Blue FS 15044 gloss FS 35044 mattethree parts H24 Dark Blue two parts H67 Maroon part H61 Black Insignia Blue Sea Blue FS 15042 gloss onlythree parts H81 Black two parts H33 Stinson Green part Dark Blue New plans Norm Rosenstock has offering plans A-scale Waco Cabin HKS-7 Great Lakes Trainer has recently redrawn plans both A-scale four-stroke engines specifically mind Waco 748 wingspan Great Lakes 64 also offers cowlings both Waco plans available immediately GL will come later Data Waco Scale 2% span 748 wing area 1200 sq engine 90 two-stroke 120 four-stroke weight 12 14 lb Write Norm Rosenstock 94 Cedar Drive Plainview NY 11803 Bob Dolly Wischer 5-221 Lapham Peak Rd Delafield WI 53018 March 1985 133
Edition: Model Aviation - 1985/03
Page Numbers: 48, 49, 132, 133
Radio Control Scale Bob & Dolly Wischer LANDING GEAR LOCATION letter reader raised question effect ground handling takeoff landing wheel centers displaced forward aft optimum location Experience tells us wheels too far forward sometimes tendency model ground ioop divert straight path takeoff landing result wing tip will touch ground worst condition encountered situation could alternate scraping both wing tips model eventually going over its back can lead messy repair particularly biplane Airplanes susceptible ground looping tail skids wheels far ahead center-of-gravity Examples some WW types have wheels far forward almost under neath engine effectively control such model requires quick deft handling rudder helpful stand directly behind model take off Excursions right left quickly detected position rudder corrections can made stop tendency swing off course have also found necessary use bit up-elevator keep tail skid contact runway until speed builds point rudder becomes effective Standing behind model during two Reno Nats L Roland Baltes modified Jemco kit Republic P-47N Thunderbolt Finished Aero Gloss dope uses OS 61 engIne weighs 11 lb Baltes photo George Millers Republic A-i 0 Warthog R used twin Turbax II fan units K&B 75cc engines equipped MACS ducted-fan pipes scratch-built Koku-Fan drawings 1/10-scale Model weighs 20 lb has RC-controlled canopy actuation Main gear units homemade retracts nose gear Dave Brown item Seen England L Brian PeckflamsAvro BabyTlieswitfl Enya 9Otour-stroke power builttoa scaleoti /48 weighs9/2 lb Finish K&B epoxy over Solartex R Peter McDermotts 1/5-scale Fly Baby has 0560 four-stroke weighs 71/2 lb Finished Humbrol overSolartex Still England L Cohn Moss used Tapsfield drawings construct Hawk Pshaw version Myers Little Toot uses Webra Speed 61 power weighs 10 lb has enamel finish R Look complex rigging double-bay biplane 1/5-scale Nieuport Nighthawk Martin Fardell Span post-WW British fighter 66 weight 101/2 lb Finish uses nylon cover nitrate dope Powermax paint K&B satin topcoat Nestled somewhere dummy engine 05 80 four-stroke engine 48 Model Aviation landing isnt easily achieved model would need approach its touchdown passing over pilots heada decidedly awkward circumstance best models approach path should pass pilot quite closely afford rear view lands seems easiest avoid landing ground loop model touches down main wheels rather attempted three-point landing isnt whole lot done about changing more-rearward wheel loca tion seriously affecting Scale appearance have seen WW Nieuports other aircraft having ward wheel centers flown reasonable success spite prob lem Pilots develop necessary skill learn best longitudinal attitude leaving approaching runway type plane being flown Propeller wash can stabilizing influence helps keep rudder authoritative problem minimized using engine adequate output Later airplanes main wheels spaced forward usually tailwheels longer tail moment arms tendency ground loop reduced because greater weight tailwheel maintains contact runway until sufficient speed built up fin rud der take over duty directional control landing type model tendency ground loop will greatest point tailwheel just about touch runway already touching little weight upon synchronized bit up-elevator par tially applied throttle can increase direc tional control pressing tailwheel down firmly Too much treatment model becomes air borne again rear view takeoff landing also helpful type model Deliberately moving wheels rear ward upward changing landing gear shape will detected anyone critical eye Scale appearance Small changes derive doubtful benefit see numerous models otherwise correct outlines Scale abominations because serious landing sear faults shape height position have tampered reason anotherand sometimes reason Treaded tires should smooth incorrect tread pattern wheel hubs wrong shape diameter other common flaws prominent Scale feature cant drastically altered penal ty Scale appearance exceptions non-altera tion rule however An example would airplane landing gear too far rearward such deHavilland 71 racer full-size DH may have propensity nose over two racers built find nothing written history warn mod eler problem Moving models wheel centers about A-in forward would great help avoiding inevitable nose-over end landing run grass small change undoubtedly detectable airplanes charac ter remains nearly unchanged Obviously fault needs corrected design stage modeling could easily overlooked model Tricycle gears also susceptible problems regard placement models As rule placing wheel cen ters relative center gravity should correct full-size plane copied accu rately main gear wheels too far forward near CG load nose wheel reduced model becomes impossible taxi crosswind wind will cause weathervaning nose wheel skids sideways However forward location main gear produc es best takeoff landing properties Moving mains rearward away CG adds load nose wheel positive steering ground another problem follows takeoff model builds speed find con siderable Up-elevator control input needed rotate wing lifting angle attack instant enough lift generated model leaps unrealistical ly air too steep climb angle Continued Page 132 Satisfaction Guaranteed Direct Only BALSA SHEETS 36 45 30 BALSA STICKS 36 45 1/162331/16 1/409 3/32r2401/16 3/810 1/8 2431/16 1/214 3/162493/32 1410 1/4 2563/32 3812 1/323373/32 1/216 1/203371/8 1808 1/1633748311/8 141116 3/3234450371/8 3/81218 1/8 35471451/8 1/21024 3/1636282553/163/161116 114 37390613/16 3/817 5/163853/16 1/22230 3/8 3881247114 1/41624 1/2 311015514 381926 3/4 31651/4 1/22130 1/1645676481/4 3/43444 3/3247004561/4 140 1/5 480106665/165/162126 3/16493122753/8 3/82737 114 4110134843/8 1/23246 3/8 41652253/8 3/44255 1/2 42252013/8 152 MATCHED SHEETS4212 123653 12344662 332410012 158 164108585846 310412034 3487 144131 BALSA HOT LINE Call 806 745-6394 10am -6pm Central Time LONE STAR MODELS 1623 57th St Lubbock TX 79412 --LIGHT 4-6 LB BALSA TRIANGLES 36WOOD36 1/414251/32349 3/8 3/8301/20349 1/21/2341/16349 3/43/4453/32356 11551/8367 3/16376 BALSAPLANKS361/4385 11853/83115 121501/23139 132003/43220 1428013300 11/232751/16478 11/24360332491 222251/84100 233253/164117 244351/44138 334953/84207 346881/24282 TAPERED SHEETS36 1/4265TRAILING EDGE36 1/43851/4132 3/82685/1611/438 3/83983/811/246 1/231201/2270 BASSWOOD 3/163/16 3/16 1/4 3/163/8 3/161/2 3/163/4 1/41/4 1/43/8 1/43/4 3/8 3/8 3/8 1/2 3/83/4 1/21/2 1/23/4 46 26 30 38 46 88 42 49 80 60 70 80 00 100 BUNDLE DEALS 20-1/8336685 20-1/164361020 203/32338845 15-3/32436855 15-1/8336715 101/8436675 15-3/16336800 10-3/18436810 101/4336630 10-1/4436890 10-3/8336850 5-3/8436825 5-1/2336540 5-1/2436855 10-3/32448845 5-1/8440485 5-3/16448585 5-1/4448625 PINE STICKS 36 48 1/81/813 1/81/41623 1/83/820 3/163/161724 3/163/82332 3/161/230 1/41/42637 1/43/83042 1/41/23447 3/83/83752 SPRUCE STICKS 36 48 1/8 1/815 1/8 1/41824 1/8 3/820 3/163/162534 1/4 1/43145 1/4 3/83650 3/8 3/84563 3/8 1/25570 1/2 1/28880 1/2 3/46888 SPRUCE TRIANGLES 3/83/8 1/21/2 3/4 3/4 36 45 61 77 HARD MAPLEIS 1/43/840 3/83/845 3/81/250 3/83/458 1/23/468 BIRCH DOWELS 1/8 3/16 1/4 5/16 3/8 3 PLY BIRCH 1/8412 1/3212 11612 1/812 36 09 11 14 26 32 48 525 425 435 450 SPLYBIRCH48 3/3212570 1/812585 3/1612585 1/412600 LONE STAR EPOXYINSTANTGLUE 9,L/s8951 z Thick298GROOVED LG MOUNTS rx/rr5881, Thi28812 Inches 15,/0982a Thick590LITE PLY483/83/4/1/8/40 30 er/n5982, Th5901/861 503/83/4/5/32/40 1/8123001/23/4/3/16/45 Handling ChargeS300 pay UPS Add $200 COD $300 extra PP APO FPO accept Visa Master Card personal checks COD 4-1/8% lao/n Texas US currency Minimum Order01O00 March 1985 49 Si WE ARE SHOOTING DOWN HIGH BALSA PRICES WITH SUPER QUALITY CUSTOM CUT CONTEST BALSA Sheets Piece ed Close Tolerances AAA Grade Dried ped 100% a serious modeler want performance must try 4-6 lb balsa f THE COMPETITIONS VIEW HE WINDSONG What makes Windsong best plane have deadair lightlift gusting 25 MPH winds thermal contest What makes windsong best plane r have x-country race Some say 17 1 ct ratio clean solidcore wing no spoiler bays urb airflow Others say Eppler 214 airfoil combined exclusive fullspan camber changing o capability including elevator compensated 80 degree flaps 0 N reflexible ailerons fact design innovations contribute Windsongs totaldesign concept its unprecedented performance WITH THEWIND SONG THE WHOLE IS TRULY GREATER THANTHE SUM OF ITS PARTSo Windsong 19995 Camano 15905Pixy 14995 Send 2 stamps catalog $25 VHSvideo tape SW CAMANO DRIVE CAMANO ISLAND WA 98292] N RC Aerobatics/Van Putte Continued page 129 pie Novice classification ace equals takeoff two straight flight out five stall turn draws three addi tional cards what represent will selected next higher Pattern classification So total nine maneuvers scored effort allow equal com petition few fliers different levels example could Novice score higher Procedure Turn Expert Figure M / Rolls dont know answered question lot fun Incidentally invited club 20 miles away 16 contestants Novice won first place Sportsman sec ond Advanced flier third got entire thing over 2/2 hours started eating difficulty need two three decks cards little extra help processing two rounds flight schedule stayed same luck played little part Some drew maneuvers liked others hated draw thought might interested am sounds like fun good ideas out send along about some good pic tures too Ron Van Putte ill Sleepy Oaks Rd Ft Walton Beach FL 32548 RC Scale/Wischers Continued page 49 some cases brought about because nose gear too short Bell Airacobra Kingcobra models having short nose gears ease problem tucking long retractable strut likely candidates treatment Ideally nose gear length should provide wing angle attack requires small amount rotation takeoff avoid damage long nose gear strut obliges pilot make landing mains nose-high position would typical prototype Minor changes main wheel loca tion fore aft trike-geared model sufficiently drastic seriously affect appearance true Scale viewpoint same small changes have magnified effect ground han dling amount control input needed transition ground alr Sport-type airplanes always tried place main wheel centers close behind models CG easy transition takeoff tail manually pushed downward ground supposed stay However arrangement caused crosswind taxiing problem mentioned previously Scale operation average A- A-scale model should have main wheel centers about /2 % rearward CG Careful attention nose gear strut length assures positive angle attack wing least 10 three wheels runway model can flown surface mini mum elevator control applied Douglas A-20G has about 40 angle attack measured wings chord line runway surface nose wheel carries about 5% models total weight Ground steering very positive Heavy up-elevator control needed certain landings main wheels first holding nose wheel above runway until mains make contact Homemade decals art decalco mania process transferring pic tures designs specially-prepared paper surface decorated instance Scale model airplane Insignia manufacturers logo small let ters numerals can painted inked blank decal paper Sources material Sig local decalprinting establishment 12 x 18 sheet listed Sig catalog 754 coated glue transparent film Using decal paper has great advantage over trying paint details directly models surfaces first attempt isnt satisfactory scrap paper can discarded no harm has come model favorite tool drawing decal paper draftsmans ruling SILICONE 10 foot coils TUBING ID 062 092 125us post S/coIl 235 265 325 54/COlL LARRY DODGE AERO INC 10210 1[LWATPD MN MflR2 n,.na LDHOODS Cereal ILD BLUE box Airplanes VONDE Fly Again Sesot Aprodotlen P40 Z5R0 -$500 -SAF FLITS MODELS Box 62M RoiIIe MI 48000 * SCALE DOCUMENTATION* SCALE DRAWINGSMODEL PLANS PHOTOS 1985 BOOKS EPLA-TECH INTERNATIONAL AIRPLANE CATALOG48500 MC KENZIE HWY $300VIDA OREGON 97488 132 Model Aviation UDODGSON DESIGNS 2904 PermaGrit TM Ufetime * Carbide Sanding Tools TUNGSTEN CARBIDE Mans hardest .., material next diamond. BRAZED TO made STEELU SA AverageFLAT TOOL Modelers 040 X 11/2 use balsa hard woods fiberglassbeaded foams epoxy fillers plexiglass WE DARE YOU TO TRY IT MONEY BACK GUARANTEEI FOR MAIL ORDERS ONLY checli M 0 ONLY $6 NoStsmps-NO COD SEE YOUR DEALER FIRST OR 5ENO FOR COMPLETE LIST OF 5 TOOLS SEND SSAE FOR COMPLETE LIST OF TOOLS DG PRODUCTS CO 209 Carrlands Dr Dayfon OH 45429 513 294-1192 lOhio res sdd 6% Tax Introducing. ZErebuil R/C die-Bar Glow Plugs Long Short$1 69 Also. Traditional line non-idle bar Glow Plugs Six Types 3 Heat Ranges High Performance Glow Element Blow Proof Seal Only $129 Swanson Associates PO Box 151 Wayne NJ7948 07470 pen circles same type pen inserted draftsmans bow compass India ink can used black lettering other colors enamels can used thinning slightly Too much thinner enamel will flow out pen nib quickly leaving wide blob decal Too little will no flow Use ruling pen draw outlines area inked painted No attempt should made freehand unless modeler skilled artist us arent pen should always guided straight edge tool some kind preference draftsmans plastic triangle After outlines have drawn inner areas can filled fine-tipped artists brushes using ruling pen paint brush Flat enamels bit easier work glossy decal art work will overcoated later give desired degree gloss Humbrol paints hobby shop work well Lettering numerals smaller about A-in high require meticulous care produced above method Much easieralso much expen siveare rub-on letters numerals used graphic art industry come semi-transparent sheets individual characters placed over desired spot rubbed stylus character loosens its grip sheet adheres surface being applied can done directly model surface hard doesnt work too well open fabric areas model Should letter number improperly placed can quite readily lifted off cellophane adhesive tape task alignment considerably facilitated working flat surface using decal paper rather model itself Rub-on charac ters available art display upply stores variety styles iizes seems infinite Whether produced ruling pen ink paint rub-on letters freehand methods art work will need pro tected abuse fuel Most insignias markings models arent iubjected attack model fuel possibility exists best protect art handiwork clear epoxy can sprayed over decal surface before cut sheet Using proper amount gloss flat hardener mixture both can produce surface will match surrounding area model make decal edges invisible decal cut close possi ble edge art work Light coats epoxy avoid thick buildup will help disguise edges Polyurethane varnish can also used overcoat lacks control over degree gloss flatness attained clear epoxy another method using decal paper make transfers Simply spray sheet color enamel dope re quired followed clear epoxy treat ment spray color epoxy Turn dried sheet over pencil letters numerals reverse side characters made backwards course cut out individual character After soaking water usual thirty seconds characters need careful ly slid off paper backing onto models surface very soft loose drop water will aid straight ening bends occur also will help attain exact alignment previ ous numeral have used method sizes printed material models including large license AMA numbers wing method can also employed apply decorative stripes Decal sheet has limitation may foil efforts smooth coverage doesnt like follow compound curves because lacquer backing solid sheet However lacquer can softened get some degree conformity using Hobsco Solvaset Krasel Super Microset over decal before glue hardens clear liquids hobby shop items soften decal will conform uneven surface such rivet impres sions panel lines Hobbypoxy colors US insignia coors latest release Petit Paint Co makers Hobbypoxy Refer ence material indicates FS 11136 gloss FS 31136 matte official specifications Insignia Red Official specs Insignia White FS 17875 gloss FS 37875 matte identical white used undersur faces US Naval aircraft published earlier repeated Two other FS numbers 37855 37886 close matches white two official shades Insignia Blue original color FS 15044 gloss FS 35044 matte both USAAF USN before during WW II Toward very end war during Korean conflict Navy aircraft gave up matte two-color finish favor overall gloss Sea Blue FS 15042 published previous column repeated Aircraft fin ished manner used Sea Blue instead Insignia Blue national markings since two colors similar formulas Insignia Red FS 11136 gloss FS 31136 matte15 parts H66 Dark Red part H65 Bright Red Insignia White FS 17875 gloss FS 37875 matteto pint HlO White 10 drops H81 Black six drops H49 Cub Yellow four drops H33 Stinson Green Insignia Blue FS 15044 gloss FS 35044 mattethree parts H24 Dark Blue two parts H67 Maroon part H61 Black Insignia Blue Sea Blue FS 15042 gloss onlythree parts H81 Black two parts H33 Stinson Green part Dark Blue New plans Norm Rosenstock has offering plans A-scale Waco Cabin HKS-7 Great Lakes Trainer has recently redrawn plans both A-scale four-stroke engines specifically mind Waco 748 wingspan Great Lakes 64 also offers cowlings both Waco plans available immediately GL will come later Data Waco Scale 2% span 748 wing area 1200 sq engine 90 two-stroke 120 four-stroke weight 12 14 lb Write Norm Rosenstock 94 Cedar Drive Plainview NY 11803 Bob Dolly Wischer 5-221 Lapham Peak Rd Delafield WI 53018 March 1985 133
