Control SCALE Bob & Dolly Wischer PAINT FINISHES have become quite familiar paints used model railroaders because son Bill connected industry As mentioned past columns Floquil flat finish fuel proof low-nitro content fuels However Floquil markets clear overcoat called Flat Finish fuel proof should used over paint area fuel castor oil makes contact leaves sticky mess cant removed Flo quil its best military aircraft authen tic flat finish easily applied airbrush Camouflage weathering its best uses metal parts should applied over primer good adhesion Another model railroad paint have used 10 years planes Scalecoat paint comes same wide variety colors Floquil dried surface semi-gloss rather flat doesnt require primer used over metal particular application experience metal nose cowling fabric-covered plane finished dope As modelers know dope has very poor adherence metal 75 Scalecoat colors can mixed match dope model maximum adhesion metal parts speed drying Scalecoat should baked use kitchen oven 2000F two hours Without baking drying slow dust collection wet surface can problem After 10 years hundreds flights no chipping wear along metal edges no evidence change exposure 10% nitro fuel exhaust residue certain good adherence metal parts should thoroughly cleaned kitchen clean ser wiped lint-free cloth soaked dope thinner After cleaning surface painted should touched order avoid depositing skin oil Scalecoat can successfully brushed prefer use airbrush after thinning about 25% Low-temperature baking causes paint sieze metal surface tightly will chip metal can actually bent effect paint Too high baking HawkerTempest Sport-Scale scratcfl-bullt Vito TOmeo Ship spans 80 uses OS 90 15-6 prop fly Finish K&B resin over auto primer -oz fiberglass cloth Scale features include sliding canopy operating split flaps jettisonable external tanks Marvin Saulters North American B-25 Mitchell modified Royal kit weighsl 3 lb isfinished K&B resin epoxy Apairof K&B 40 engines furnish power Photographed 81 Nats Bill Coombes Grumman F6F-3 Hellcat began life Jemco kit Sport Scale Nats entry finished Polly-S Floquil paint uses Rhom retracts Robart landing gear OS Max 60 John Pagan several Nats contestants entertwO events larger Bucker Jungmeister 1/4-scale Platt kit flown Giant class smaller version Sport Scale model based Flyline kit used Davis Diesel-ized 10 engine temperature can cause slight darkening hue have found degree gloss attained very similar dope no aftertreatment polishing necessary Spray painting better investments years ago purchase onehorsepower two-cylinder air compressor spray painting size compressor capable maintaining 40 pounds pressure flow rate six cubic feet per minute quantity air seldom ever needed Scale modeling Large amounts air required using one-quart production spray gun full-time operation using less half compressor capacity Most spray work done airbrushes consumes air much lower rate average model spraying one-third horsepower diaphragmtype compressor sufficient dope work above-mentioned produc tion gun working 40 pounds externalmix nozzle will coat side six-ft wing less minute covering 6-in wide swath sweep Partially depressing trigger starts air flow full movement releases liquid flow Its advantage will cover large surface quickly areas wet leaving no boundary between wet dry smaller gun covers less area boundary over-spray may need polished out later wet sanding rubbing compound An external-mix nozzle necessary working fast-drying materials such dope lacquer acrylics nozzle no pressure paint container liquid drawn up mixing point siphoning action mixing air point emerges nozzle has air holes its sides form fan-type spray pattern widens area covered Because heavy liquids dont siphon readily always need bethinned spray ingup 50% thick dope Use fastdrying materials internal-mix nozzles causes clogging Continued page 101 Bob Karissons Grumman FM-2 Wildcat three Nats entries using geared Webra 60 engine Cowl flaps wing flaps operate automaticallywith change airspeed Model 1 /6-scale weighs 13 lb Finish fiberglass cloth fuselage silk dope wings tail Butyrate dope covers photos Nats Ed Couchs Republic F-84F Thunderatreak will kit sometime future Fiberglass fuse foam wing stab OPS 61 drives Byron fan unit uses Byron tuned pipe too model finished K&B epoxy uses Rhom retracts OUR MOUNTS ARE TOUGH AS NAILS BUT LOT EASIER TO USE Octagonal design easy alignment DONT FORGET OUR OTHER FINE ACCESSORIES Striping Tape Now 9 colors 4 widths Masking Tape Inexpensive vinyl tape get sharp clean linesNow available black white 6 sizes tough aluminum dual landing gear foryoursport model Great quarter scalers Landing Gear Hardwood struts Thousands modelers have tried Great Planes mounts because theyre easy use versatile design reasonably priced Ask local retailer size fit enginel offer variety 7 different mounts make sure youll get proper fit choose between 05 09 15 19 40 60 60 long mounts FORMERLYoBO%72~oiS 61801 BRIDI oaavURBAN~ 2171367206 March 198239 Can drilled nosegear mount Mount engine vertically 45 90 degrees Tough glass-filled nylon material IIIIDN EW/Il Gasoline/Diesel Fuel Conversion Kit Sullivan Fuel Tanks Now can use Sullivan tanks gasoline diesel powered models fuel conversion kit can fill yourSullivan regularfuel gas tank gasoline diesel fuel Save money check out kit Heres what youll get 8 large BUNA-N tubing 3 Barbed fittings 1 BUNA-N stopper 4 Nylon lock ties Also available 3 ft length large BUNA-N tubing 1/8 ID 3 ft length medium BUNA-N tubing 3/32 lD GOLD-NI PUSH RODS Positive No Bind Flight Control I I Write Free Fact Sheet I UThe push /rodsthat beat Uthe clog Pat Iented splines /inner rod cut right I/through mess //Temperature compen sated prevent / elongation Good gold UInsist Gold-N-Rod Iclevis incguded I I U I I I I I I I I I I SINGLE GEAR FITS NOSE OR MAIN GEAR SMODOTH LANDINGS. hug turf Strong lightweight REALISTIC landing gears eliminate erratic vi bration feature short fulcrum ground hugging ability Caster action Adjustable pressure Easy customize Four sizes fit wheels 1 3 Ask about e tail gear thinking Coxs proposed 40 discovered 05 1 just stood disbelief let flying partner Denny Sumner fly did whole flight rolling circles takeoff through dead-stick landing final roll less 50 feet before touchdown feet during flight crowd believing aileron servo locked full right After held small clinic flying local club members apparently quite experience since never seen aileron hot engine hope can experience fun have Happy flying Radio Technique/Myers Continued page 29 walk off leave something charge wrote column time expect youll reading about Christmas Ill wish Seasons Greetings hope Peace Earth will become reality soon Keep letters flowing Editors note Publication column delayed month time George expected appear Thats youre reading after holiday season RMcM George M Myers 70 Froehlich Farm Rd Hicksville NY 11801 RC Scale/Wischers Co ntinued page 39 3-in width depending upon size nozzle tip used Its cup will hold paint side large wing means frequent refilling Its advantage light weight easy manipulation flexibility Its disadvantage high cost Lowest cost singie-action externalmix airbrush maximum versatility three sizes spray tips cover areas -in 2-in diameter Depressing button releases air fluid simultaneously no provision changing spray pattern round oblong larger guns Because small area largest tip very difficult get uniform density color Best use airbrush spraying small areas trim color after masking have found singleaction airbrush useful large areas paints such Floquil simply practical doping full area complete model camouflage weathering doubleaction internal-mix airbrush has no equal brush really different air paint mixed inside spray tip thorough atomiza tion resulting almost complete elimination over-spray Depressing button releases air moving button rearward controls quantity liquid spray diameter Dont expect learn technique recently-completed super- Scale model takes patience develop ment sIdlI Another disadvantage intemal mix spray tip frequent cleaning required using fast-drying materials purposes RC Scale variant internal-mix airbrush singleaction button releases both air paint paint quantity easily variable secondary control rear tip end airbrush continuously variable double-action device less difficult master operating techniques paint density re p[J ii uFu i TOPKICK 47 Wingspan Splendid Contest D...I NEW ENGINE MAKE READY $2995 plus postage Complete Dis-Assembly Deburr Check Fits Clean & Re-Assemble READY TO RUN Send Leland Morton L M Hobbies 115 Cochran Mesquite TX 75181 Most versatile number uses DetaiV Touch-Up gun used specialty auto paint shops can cover spray patterns -in RADIUS TOOL NrnmGd TUNGSTEN CARBIDE Mans Hardest Material 1 next Diamond LIFETIME SANDING S ..TOOL 4 9 f 00 OLS IN ONE MONEY BACK pGUARANTEE Y4 Radius TOOL ONLY Ohio add 6% sales tax $695 pp Check Money Order No CODS Wholesale & Dealer Inquiries Invited D G PRODUCTS CO 209 CARRLANDS DR DAYTON OHIO 45429 TAPER ACETM Rib Profiler makes tapered eliptical wing design easy Curve plates provided draw 3 different full symmetrical 3 different semi-symmetrical airfoils Flat bottom airfoils can also drawn Send check MO $2495 Jim Denaro Model Products 543 Bedford Street Concord MA 01742 Works faster computerl Adjusts locks size rib instantly THE PEANUT-PEOPLE PRESENT PEANUT SCALE MODELS MUSTANG MILES M-I8ZERO DRUINEPIETENPOL COUGARPIPER CUB GIPSY MOTHANDRESON GANAGOBIELACEY M-l0 Rubber Powered Balsa TIssue Kits $595 SPORT MODELS PRAIRIE BIRD $595 BABY ACE$649 ONE NITE 28$695 ONE NITE iS$595 STRINGLESS WONDER$495 PECK ROG$195 RUBBER OR CO2 POWERED IHILDING NEEDS zzZL PROPS TISSUE RUBBER WINDERS BLADE SHARPENERS BEARINGS PROP SHAFTS LUBE WASHERS WHEELS FUSE CO-2 MOTORS BOOKS PLANS asd MORE ADVENTURE MODELS PONY BLIMP il-FT RIC AIRSHIP KIT $24900 COMPLETE CATALOG $100 HARD TO FIND ITEMS FOR RUBBER MODELS AND AIRSHIPS Peck-Petymers mains constant work long airbrush kept moving constant rate appears useful airbrush non-professional provided its application con fined small areas model has masked detail snipe can painted large spray gun wasteful paint thinner may times paint mask model much thinner needed clean gun used models stripe $10 per gallon thinner smaller quantity used airbrush small areas eventually pays cost brush spray painting humid weather likely some condensation water hose leading gun airbrush can carried out through nozzle spoil finish likely occur systems have no storage air tank air fed diaphragm compressor directly sprayer water trap can used air line avoid problem Sudden rapid expansion air spray tip causes temperature drop releases moisture combined evaporation cooling models surface condense water surrounding humid air cause blushing dulling surface gloss severe cases surface turns milky white Avoid condition spraying dry days Dont pump up tank humid day spray dry weather have blush dry weather moist air tank drain plug bottom tank release condensate stop blush add retarder dope slows down rapid evaporation solvents slows drying Retarder also helps slow rapid drying offspray reduces gloss Heating dope safe manner 2Oo 300F may also bene P 0 BOX 2498-MALA MESA CALIF 92041 PHONE 714 469-8675 714 442-4636 ficial reducing blush amount retarder depends upon relative humidity Aircraft chanics have told us sometimes use retarder place thinner during high-humidity periods midsummer job could delayed preferred surface preparation silk clear dope -oz glass cloth polyester resin filled sanded brushed coats up point color application Only pigmented material sprayed surface absolutely smooth no cloth weave visible must filled sanded finished smooth condition before application color pro cedure evolved because found color coats build weight quickly should kept minimum have never used two sprayed color coats spray area garage doors open ventilation production gun will fill garage solvent fog two minutes permit clear out before spraying next piece Wear mask protect against breathing solvent vapors spray quickly move out fresh air ventilated spray booth would best very few modelers have have wooden bracket nailed garage wall has two dowels extending four feet Out ward wall support part being sprayed enables operator walk com pletely around work Wing fuselage supported dowels about three feet above floor Spraying downward horizontal surface minimizes runs spray surface large parts second surface done after first dries Small parts such tail surfaces supported bent wire brackets made coat hangers held hand spraying tie other permits surfaces 102 Model Aviation CRICKET HELICOPTER & PARTS Cricket$19995 Built w/HB 21 PDP eng Installed$29995 RTF n Adjusted & fully tested Bill Curtis$59995 Included H8 21 Eng & Futaba 4L Radio Cricket Parts Expert Help 412-342-5740 Shipping included MC visa COD Ck worder PLAZA HOBBYCRAFT 3473 E State Street Sharon PA 16146 $89395 Maple Prop included Exhaust may positioned left right facing rearward Full Size FOX 19 BB-RC Engine Drawing available request runs great economical Fox Gold Star Fuel new FOX 19 BB-RC handstarts ease yet stressed radial loads imposed electric starters beltdrive spur gear systems two large 11mm Ball Bearings front rear Its got smooth low idle too years engine life known millionodd engines taught us covered Spraying techniques sequences vary part being finished its shape prefer ence wing example spray bottom first beginning edges followed flat surfaces wing too wide cover pass gun spray near side first gun held angle about 450 follow second pass along far side technique covers off-spray first pass wet coat second Repeat top surface after bottom has dried cold weather wet parts carried indoors drying Crumpled newspapers stuffed openings model spray should penetrate slow-drying materials epoxy example preferred spray top bottom same time part suspended manner can turned New ducted fan book us have impressed success ducted fan models Nats recent first place win Tom Cooks F-S Phantom Scale Masters Tournament new book Dick Sarpolus sums up what need know entry exciting phase Scale modeling book helps us get ducted fans having reinvent things others have already done Dick Sarpolus no stranger have reading magazines Forty designs have appeared construction articles book explains operation ducted fans lists accessories needed tells build fly ducted fan model planes book also contains up-to-date listing ducted fan units suitable engines currently available ducted fan air craft kits consists 52 magazine-size pages how-to text includes 1 34 photos drawings Dicks book titled Building Flting Ducted Fan RCA ircraft $695 avail able hobby shops book stores direct Kalmbach Books 1027 N 7th St. Milwaukee WI 53233 Include postage handling US $75 foreign $125 Bob andDolh Wiseher Rt 1 S-221 Lapham Peak Rd Delafield WI 53018 RC Aerobatics/Van Putte Continued page 41 rpm increases peak-power rpm moves through Obviously engine broad power curve definite advantage STOL operation because power output wont vary much rpm What rye written far hasnt really answered question can answer satisfactorily youby doing kinds experiments have done already practical way attack situation deter what prop gives static thrust youve done already try prop pitch diameter somewhat higher Probably best prop try same pitch larger diameter After determining static thrust untouched larger prop try trimming tips little bit time until get down diameter previous prop Since Top Flite 11-5 Super Maple superior static ally try 12-5 go After reading what just wrote started shaking head must potent Enya 29 have swing 11-5 prop used fly Enya 45 11-6 props years ago much bigger engine 29 Good luck Continued page 108 ANOTHER GREAT WINDER List $5625 Plus diipping JOHN MORRILLS SIDEWINDER Precision Built Heavy Duty Windert March 1982 103 18000 RPMs Hot Pertarmance tion CANADIAN HOBBY DEALERS von can now order Fox Model Products direct fac tory Standard discounts apply Freight Prepaid except fuel Most Fox Products should Tariff Free under provi sions Taritt Item 62435-1 Gall us write further details 535 Towson Ave Fort Smith Arkansas 72901 $100 FOR CATALOG CUSTOM TUNED ENGINES COMPETITION ACCESSORIES Specialists custom 70 049/051 reed engines Throttled TD available Complete inventory individual stock custom parts Cox 70 020 049 051 & 09 engines Exclusive distributor Nelson 15 engine parts Hard-to-get items such custom needle valves racing wheels quick fills fuel shut-a fis solid control lines others detailed brochure send 25 cents Kustom Kraftsmanship Box 2699 Laguna Hills CA 92653 Ph 714 830-5162
Edition: Model Aviation - 1982/03
Page Numbers: 38, 39, 101, 102, 103
Control SCALE Bob & Dolly Wischer PAINT FINISHES have become quite familiar paints used model railroaders because son Bill connected industry As mentioned past columns Floquil flat finish fuel proof low-nitro content fuels However Floquil markets clear overcoat called Flat Finish fuel proof should used over paint area fuel castor oil makes contact leaves sticky mess cant removed Flo quil its best military aircraft authen tic flat finish easily applied airbrush Camouflage weathering its best uses metal parts should applied over primer good adhesion Another model railroad paint have used 10 years planes Scalecoat paint comes same wide variety colors Floquil dried surface semi-gloss rather flat doesnt require primer used over metal particular application experience metal nose cowling fabric-covered plane finished dope As modelers know dope has very poor adherence metal 75 Scalecoat colors can mixed match dope model maximum adhesion metal parts speed drying Scalecoat should baked use kitchen oven 2000F two hours Without baking drying slow dust collection wet surface can problem After 10 years hundreds flights no chipping wear along metal edges no evidence change exposure 10% nitro fuel exhaust residue certain good adherence metal parts should thoroughly cleaned kitchen clean ser wiped lint-free cloth soaked dope thinner After cleaning surface painted should touched order avoid depositing skin oil Scalecoat can successfully brushed prefer use airbrush after thinning about 25% Low-temperature baking causes paint sieze metal surface tightly will chip metal can actually bent effect paint Too high baking HawkerTempest Sport-Scale scratcfl-bullt Vito TOmeo Ship spans 80 uses OS 90 15-6 prop fly Finish K&B resin over auto primer -oz fiberglass cloth Scale features include sliding canopy operating split flaps jettisonable external tanks Marvin Saulters North American B-25 Mitchell modified Royal kit weighsl 3 lb isfinished K&B resin epoxy Apairof K&B 40 engines furnish power Photographed 81 Nats Bill Coombes Grumman F6F-3 Hellcat began life Jemco kit Sport Scale Nats entry finished Polly-S Floquil paint uses Rhom retracts Robart landing gear OS Max 60 John Pagan several Nats contestants entertwO events larger Bucker Jungmeister 1/4-scale Platt kit flown Giant class smaller version Sport Scale model based Flyline kit used Davis Diesel-ized 10 engine temperature can cause slight darkening hue have found degree gloss attained very similar dope no aftertreatment polishing necessary Spray painting better investments years ago purchase onehorsepower two-cylinder air compressor spray painting size compressor capable maintaining 40 pounds pressure flow rate six cubic feet per minute quantity air seldom ever needed Scale modeling Large amounts air required using one-quart production spray gun full-time operation using less half compressor capacity Most spray work done airbrushes consumes air much lower rate average model spraying one-third horsepower diaphragmtype compressor sufficient dope work above-mentioned produc tion gun working 40 pounds externalmix nozzle will coat side six-ft wing less minute covering 6-in wide swath sweep Partially depressing trigger starts air flow full movement releases liquid flow Its advantage will cover large surface quickly areas wet leaving no boundary between wet dry smaller gun covers less area boundary over-spray may need polished out later wet sanding rubbing compound An external-mix nozzle necessary working fast-drying materials such dope lacquer acrylics nozzle no pressure paint container liquid drawn up mixing point siphoning action mixing air point emerges nozzle has air holes its sides form fan-type spray pattern widens area covered Because heavy liquids dont siphon readily always need bethinned spray ingup 50% thick dope Use fastdrying materials internal-mix nozzles causes clogging Continued page 101 Bob Karissons Grumman FM-2 Wildcat three Nats entries using geared Webra 60 engine Cowl flaps wing flaps operate automaticallywith change airspeed Model 1 /6-scale weighs 13 lb Finish fiberglass cloth fuselage silk dope wings tail Butyrate dope covers photos Nats Ed Couchs Republic F-84F Thunderatreak will kit sometime future Fiberglass fuse foam wing stab OPS 61 drives Byron fan unit uses Byron tuned pipe too model finished K&B epoxy uses Rhom retracts OUR MOUNTS ARE TOUGH AS NAILS BUT LOT EASIER TO USE Octagonal design easy alignment DONT FORGET OUR OTHER FINE ACCESSORIES Striping Tape Now 9 colors 4 widths Masking Tape Inexpensive vinyl tape get sharp clean linesNow available black white 6 sizes tough aluminum dual landing gear foryoursport model Great quarter scalers Landing Gear Hardwood struts Thousands modelers have tried Great Planes mounts because theyre easy use versatile design reasonably priced Ask local retailer size fit enginel offer variety 7 different mounts make sure youll get proper fit choose between 05 09 15 19 40 60 60 long mounts FORMERLYoBO%72~oiS 61801 BRIDI oaavURBAN~ 2171367206 March 198239 Can drilled nosegear mount Mount engine vertically 45 90 degrees Tough glass-filled nylon material IIIIDN EW/Il Gasoline/Diesel Fuel Conversion Kit Sullivan Fuel Tanks Now can use Sullivan tanks gasoline diesel powered models fuel conversion kit can fill yourSullivan regularfuel gas tank gasoline diesel fuel Save money check out kit Heres what youll get 8 large BUNA-N tubing 3 Barbed fittings 1 BUNA-N stopper 4 Nylon lock ties Also available 3 ft length large BUNA-N tubing 1/8 ID 3 ft length medium BUNA-N tubing 3/32 lD GOLD-NI PUSH RODS Positive No Bind Flight Control I I Write Free Fact Sheet I UThe push /rodsthat beat Uthe clog Pat Iented splines /inner rod cut right I/through mess //Temperature compen sated prevent / elongation Good gold UInsist Gold-N-Rod Iclevis incguded I I U I I I I I I I I I I SINGLE GEAR FITS NOSE OR MAIN GEAR SMODOTH LANDINGS. hug turf Strong lightweight REALISTIC landing gears eliminate erratic vi bration feature short fulcrum ground hugging ability Caster action Adjustable pressure Easy customize Four sizes fit wheels 1 3 Ask about e tail gear thinking Coxs proposed 40 discovered 05 1 just stood disbelief let flying partner Denny Sumner fly did whole flight rolling circles takeoff through dead-stick landing final roll less 50 feet before touchdown feet during flight crowd believing aileron servo locked full right After held small clinic flying local club members apparently quite experience since never seen aileron hot engine hope can experience fun have Happy flying Radio Technique/Myers Continued page 29 walk off leave something charge wrote column time expect youll reading about Christmas Ill wish Seasons Greetings hope Peace Earth will become reality soon Keep letters flowing Editors note Publication column delayed month time George expected appear Thats youre reading after holiday season RMcM George M Myers 70 Froehlich Farm Rd Hicksville NY 11801 RC Scale/Wischers Co ntinued page 39 3-in width depending upon size nozzle tip used Its cup will hold paint side large wing means frequent refilling Its advantage light weight easy manipulation flexibility Its disadvantage high cost Lowest cost singie-action externalmix airbrush maximum versatility three sizes spray tips cover areas -in 2-in diameter Depressing button releases air fluid simultaneously no provision changing spray pattern round oblong larger guns Because small area largest tip very difficult get uniform density color Best use airbrush spraying small areas trim color after masking have found singleaction airbrush useful large areas paints such Floquil simply practical doping full area complete model camouflage weathering doubleaction internal-mix airbrush has no equal brush really different air paint mixed inside spray tip thorough atomiza tion resulting almost complete elimination over-spray Depressing button releases air moving button rearward controls quantity liquid spray diameter Dont expect learn technique recently-completed super- Scale model takes patience develop ment sIdlI Another disadvantage intemal mix spray tip frequent cleaning required using fast-drying materials purposes RC Scale variant internal-mix airbrush singleaction button releases both air paint paint quantity easily variable secondary control rear tip end airbrush continuously variable double-action device less difficult master operating techniques paint density re p[J ii uFu i TOPKICK 47 Wingspan Splendid Contest D...I NEW ENGINE MAKE READY $2995 plus postage Complete Dis-Assembly Deburr Check Fits Clean & Re-Assemble READY TO RUN Send Leland Morton L M Hobbies 115 Cochran Mesquite TX 75181 Most versatile number uses DetaiV Touch-Up gun used specialty auto paint shops can cover spray patterns -in RADIUS TOOL NrnmGd TUNGSTEN CARBIDE Mans Hardest Material 1 next Diamond LIFETIME SANDING S ..TOOL 4 9 f 00 OLS IN ONE MONEY BACK pGUARANTEE Y4 Radius TOOL ONLY Ohio add 6% sales tax $695 pp Check Money Order No CODS Wholesale & Dealer Inquiries Invited D G PRODUCTS CO 209 CARRLANDS DR DAYTON OHIO 45429 TAPER ACETM Rib Profiler makes tapered eliptical wing design easy Curve plates provided draw 3 different full symmetrical 3 different semi-symmetrical airfoils Flat bottom airfoils can also drawn Send check MO $2495 Jim Denaro Model Products 543 Bedford Street Concord MA 01742 Works faster computerl Adjusts locks size rib instantly THE PEANUT-PEOPLE PRESENT PEANUT SCALE MODELS MUSTANG MILES M-I8ZERO DRUINEPIETENPOL COUGARPIPER CUB GIPSY MOTHANDRESON GANAGOBIELACEY M-l0 Rubber Powered Balsa TIssue Kits $595 SPORT MODELS PRAIRIE BIRD $595 BABY ACE$649 ONE NITE 28$695 ONE NITE iS$595 STRINGLESS WONDER$495 PECK ROG$195 RUBBER OR CO2 POWERED IHILDING NEEDS zzZL PROPS TISSUE RUBBER WINDERS BLADE SHARPENERS BEARINGS PROP SHAFTS LUBE WASHERS WHEELS FUSE CO-2 MOTORS BOOKS PLANS asd MORE ADVENTURE MODELS PONY BLIMP il-FT RIC AIRSHIP KIT $24900 COMPLETE CATALOG $100 HARD TO FIND ITEMS FOR RUBBER MODELS AND AIRSHIPS Peck-Petymers mains constant work long airbrush kept moving constant rate appears useful airbrush non-professional provided its application con fined small areas model has masked detail snipe can painted large spray gun wasteful paint thinner may times paint mask model much thinner needed clean gun used models stripe $10 per gallon thinner smaller quantity used airbrush small areas eventually pays cost brush spray painting humid weather likely some condensation water hose leading gun airbrush can carried out through nozzle spoil finish likely occur systems have no storage air tank air fed diaphragm compressor directly sprayer water trap can used air line avoid problem Sudden rapid expansion air spray tip causes temperature drop releases moisture combined evaporation cooling models surface condense water surrounding humid air cause blushing dulling surface gloss severe cases surface turns milky white Avoid condition spraying dry days Dont pump up tank humid day spray dry weather have blush dry weather moist air tank drain plug bottom tank release condensate stop blush add retarder dope slows down rapid evaporation solvents slows drying Retarder also helps slow rapid drying offspray reduces gloss Heating dope safe manner 2Oo 300F may also bene P 0 BOX 2498-MALA MESA CALIF 92041 PHONE 714 469-8675 714 442-4636 ficial reducing blush amount retarder depends upon relative humidity Aircraft chanics have told us sometimes use retarder place thinner during high-humidity periods midsummer job could delayed preferred surface preparation silk clear dope -oz glass cloth polyester resin filled sanded brushed coats up point color application Only pigmented material sprayed surface absolutely smooth no cloth weave visible must filled sanded finished smooth condition before application color pro cedure evolved because found color coats build weight quickly should kept minimum have never used two sprayed color coats spray area garage doors open ventilation production gun will fill garage solvent fog two minutes permit clear out before spraying next piece Wear mask protect against breathing solvent vapors spray quickly move out fresh air ventilated spray booth would best very few modelers have have wooden bracket nailed garage wall has two dowels extending four feet Out ward wall support part being sprayed enables operator walk com pletely around work Wing fuselage supported dowels about three feet above floor Spraying downward horizontal surface minimizes runs spray surface large parts second surface done after first dries Small parts such tail surfaces supported bent wire brackets made coat hangers held hand spraying tie other permits surfaces 102 Model Aviation CRICKET HELICOPTER & PARTS Cricket$19995 Built w/HB 21 PDP eng Installed$29995 RTF n Adjusted & fully tested Bill Curtis$59995 Included H8 21 Eng & Futaba 4L Radio Cricket Parts Expert Help 412-342-5740 Shipping included MC visa COD Ck worder PLAZA HOBBYCRAFT 3473 E State Street Sharon PA 16146 $89395 Maple Prop included Exhaust may positioned left right facing rearward Full Size FOX 19 BB-RC Engine Drawing available request runs great economical Fox Gold Star Fuel new FOX 19 BB-RC handstarts ease yet stressed radial loads imposed electric starters beltdrive spur gear systems two large 11mm Ball Bearings front rear Its got smooth low idle too years engine life known millionodd engines taught us covered Spraying techniques sequences vary part being finished its shape prefer ence wing example spray bottom first beginning edges followed flat surfaces wing too wide cover pass gun spray near side first gun held angle about 450 follow second pass along far side technique covers off-spray first pass wet coat second Repeat top surface after bottom has dried cold weather wet parts carried indoors drying Crumpled newspapers stuffed openings model spray should penetrate slow-drying materials epoxy example preferred spray top bottom same time part suspended manner can turned New ducted fan book us have impressed success ducted fan models Nats recent first place win Tom Cooks F-S Phantom Scale Masters Tournament new book Dick Sarpolus sums up what need know entry exciting phase Scale modeling book helps us get ducted fans having reinvent things others have already done Dick Sarpolus no stranger have reading magazines Forty designs have appeared construction articles book explains operation ducted fans lists accessories needed tells build fly ducted fan model planes book also contains up-to-date listing ducted fan units suitable engines currently available ducted fan air craft kits consists 52 magazine-size pages how-to text includes 1 34 photos drawings Dicks book titled Building Flting Ducted Fan RCA ircraft $695 avail able hobby shops book stores direct Kalmbach Books 1027 N 7th St. Milwaukee WI 53233 Include postage handling US $75 foreign $125 Bob andDolh Wiseher Rt 1 S-221 Lapham Peak Rd Delafield WI 53018 RC Aerobatics/Van Putte Continued page 41 rpm increases peak-power rpm moves through Obviously engine broad power curve definite advantage STOL operation because power output wont vary much rpm What rye written far hasnt really answered question can answer satisfactorily youby doing kinds experiments have done already practical way attack situation deter what prop gives static thrust youve done already try prop pitch diameter somewhat higher Probably best prop try same pitch larger diameter After determining static thrust untouched larger prop try trimming tips little bit time until get down diameter previous prop Since Top Flite 11-5 Super Maple superior static ally try 12-5 go After reading what just wrote started shaking head must potent Enya 29 have swing 11-5 prop used fly Enya 45 11-6 props years ago much bigger engine 29 Good luck Continued page 108 ANOTHER GREAT WINDER List $5625 Plus diipping JOHN MORRILLS SIDEWINDER Precision Built Heavy Duty Windert March 1982 103 18000 RPMs Hot Pertarmance tion CANADIAN HOBBY DEALERS von can now order Fox Model Products direct fac tory Standard discounts apply Freight Prepaid except fuel Most Fox Products should Tariff Free under provi sions Taritt Item 62435-1 Gall us write further details 535 Towson Ave Fort Smith Arkansas 72901 $100 FOR CATALOG CUSTOM TUNED ENGINES COMPETITION ACCESSORIES Specialists custom 70 049/051 reed engines Throttled TD available Complete inventory individual stock custom parts Cox 70 020 049 051 & 09 engines Exclusive distributor Nelson 15 engine parts Hard-to-get items such custom needle valves racing wheels quick fills fuel shut-a fis solid control lines others detailed brochure send 25 cents Kustom Kraftsmanship Box 2699 Laguna Hills CA 92653 Ph 714 830-5162
Edition: Model Aviation - 1982/03
Page Numbers: 38, 39, 101, 102, 103
Control SCALE Bob & Dolly Wischer PAINT FINISHES have become quite familiar paints used model railroaders because son Bill connected industry As mentioned past columns Floquil flat finish fuel proof low-nitro content fuels However Floquil markets clear overcoat called Flat Finish fuel proof should used over paint area fuel castor oil makes contact leaves sticky mess cant removed Flo quil its best military aircraft authen tic flat finish easily applied airbrush Camouflage weathering its best uses metal parts should applied over primer good adhesion Another model railroad paint have used 10 years planes Scalecoat paint comes same wide variety colors Floquil dried surface semi-gloss rather flat doesnt require primer used over metal particular application experience metal nose cowling fabric-covered plane finished dope As modelers know dope has very poor adherence metal 75 Scalecoat colors can mixed match dope model maximum adhesion metal parts speed drying Scalecoat should baked use kitchen oven 2000F two hours Without baking drying slow dust collection wet surface can problem After 10 years hundreds flights no chipping wear along metal edges no evidence change exposure 10% nitro fuel exhaust residue certain good adherence metal parts should thoroughly cleaned kitchen clean ser wiped lint-free cloth soaked dope thinner After cleaning surface painted should touched order avoid depositing skin oil Scalecoat can successfully brushed prefer use airbrush after thinning about 25% Low-temperature baking causes paint sieze metal surface tightly will chip metal can actually bent effect paint Too high baking HawkerTempest Sport-Scale scratcfl-bullt Vito TOmeo Ship spans 80 uses OS 90 15-6 prop fly Finish K&B resin over auto primer -oz fiberglass cloth Scale features include sliding canopy operating split flaps jettisonable external tanks Marvin Saulters North American B-25 Mitchell modified Royal kit weighsl 3 lb isfinished K&B resin epoxy Apairof K&B 40 engines furnish power Photographed 81 Nats Bill Coombes Grumman F6F-3 Hellcat began life Jemco kit Sport Scale Nats entry finished Polly-S Floquil paint uses Rhom retracts Robart landing gear OS Max 60 John Pagan several Nats contestants entertwO events larger Bucker Jungmeister 1/4-scale Platt kit flown Giant class smaller version Sport Scale model based Flyline kit used Davis Diesel-ized 10 engine temperature can cause slight darkening hue have found degree gloss attained very similar dope no aftertreatment polishing necessary Spray painting better investments years ago purchase onehorsepower two-cylinder air compressor spray painting size compressor capable maintaining 40 pounds pressure flow rate six cubic feet per minute quantity air seldom ever needed Scale modeling Large amounts air required using one-quart production spray gun full-time operation using less half compressor capacity Most spray work done airbrushes consumes air much lower rate average model spraying one-third horsepower diaphragmtype compressor sufficient dope work above-mentioned produc tion gun working 40 pounds externalmix nozzle will coat side six-ft wing less minute covering 6-in wide swath sweep Partially depressing trigger starts air flow full movement releases liquid flow Its advantage will cover large surface quickly areas wet leaving no boundary between wet dry smaller gun covers less area boundary over-spray may need polished out later wet sanding rubbing compound An external-mix nozzle necessary working fast-drying materials such dope lacquer acrylics nozzle no pressure paint container liquid drawn up mixing point siphoning action mixing air point emerges nozzle has air holes its sides form fan-type spray pattern widens area covered Because heavy liquids dont siphon readily always need bethinned spray ingup 50% thick dope Use fastdrying materials internal-mix nozzles causes clogging Continued page 101 Bob Karissons Grumman FM-2 Wildcat three Nats entries using geared Webra 60 engine Cowl flaps wing flaps operate automaticallywith change airspeed Model 1 /6-scale weighs 13 lb Finish fiberglass cloth fuselage silk dope wings tail Butyrate dope covers photos Nats Ed Couchs Republic F-84F Thunderatreak will kit sometime future Fiberglass fuse foam wing stab OPS 61 drives Byron fan unit uses Byron tuned pipe too model finished K&B epoxy uses Rhom retracts OUR MOUNTS ARE TOUGH AS NAILS BUT LOT EASIER TO USE Octagonal design easy alignment DONT FORGET OUR OTHER FINE ACCESSORIES Striping Tape Now 9 colors 4 widths Masking Tape Inexpensive vinyl tape get sharp clean linesNow available black white 6 sizes tough aluminum dual landing gear foryoursport model Great quarter scalers Landing Gear Hardwood struts Thousands modelers have tried Great Planes mounts because theyre easy use versatile design reasonably priced Ask local retailer size fit enginel offer variety 7 different mounts make sure youll get proper fit choose between 05 09 15 19 40 60 60 long mounts FORMERLYoBO%72~oiS 61801 BRIDI oaavURBAN~ 2171367206 March 198239 Can drilled nosegear mount Mount engine vertically 45 90 degrees Tough glass-filled nylon material IIIIDN EW/Il Gasoline/Diesel Fuel Conversion Kit Sullivan Fuel Tanks Now can use Sullivan tanks gasoline diesel powered models fuel conversion kit can fill yourSullivan regularfuel gas tank gasoline diesel fuel Save money check out kit Heres what youll get 8 large BUNA-N tubing 3 Barbed fittings 1 BUNA-N stopper 4 Nylon lock ties Also available 3 ft length large BUNA-N tubing 1/8 ID 3 ft length medium BUNA-N tubing 3/32 lD GOLD-NI PUSH RODS Positive No Bind Flight Control I I Write Free Fact Sheet I UThe push /rodsthat beat Uthe clog Pat Iented splines /inner rod cut right I/through mess //Temperature compen sated prevent / elongation Good gold UInsist Gold-N-Rod Iclevis incguded I I U I I I I I I I I I I SINGLE GEAR FITS NOSE OR MAIN GEAR SMODOTH LANDINGS. hug turf Strong lightweight REALISTIC landing gears eliminate erratic vi bration feature short fulcrum ground hugging ability Caster action Adjustable pressure Easy customize Four sizes fit wheels 1 3 Ask about e tail gear thinking Coxs proposed 40 discovered 05 1 just stood disbelief let flying partner Denny Sumner fly did whole flight rolling circles takeoff through dead-stick landing final roll less 50 feet before touchdown feet during flight crowd believing aileron servo locked full right After held small clinic flying local club members apparently quite experience since never seen aileron hot engine hope can experience fun have Happy flying Radio Technique/Myers Continued page 29 walk off leave something charge wrote column time expect youll reading about Christmas Ill wish Seasons Greetings hope Peace Earth will become reality soon Keep letters flowing Editors note Publication column delayed month time George expected appear Thats youre reading after holiday season RMcM George M Myers 70 Froehlich Farm Rd Hicksville NY 11801 RC Scale/Wischers Co ntinued page 39 3-in width depending upon size nozzle tip used Its cup will hold paint side large wing means frequent refilling Its advantage light weight easy manipulation flexibility Its disadvantage high cost Lowest cost singie-action externalmix airbrush maximum versatility three sizes spray tips cover areas -in 2-in diameter Depressing button releases air fluid simultaneously no provision changing spray pattern round oblong larger guns Because small area largest tip very difficult get uniform density color Best use airbrush spraying small areas trim color after masking have found singleaction airbrush useful large areas paints such Floquil simply practical doping full area complete model camouflage weathering doubleaction internal-mix airbrush has no equal brush really different air paint mixed inside spray tip thorough atomiza tion resulting almost complete elimination over-spray Depressing button releases air moving button rearward controls quantity liquid spray diameter Dont expect learn technique recently-completed super- Scale model takes patience develop ment sIdlI Another disadvantage intemal mix spray tip frequent cleaning required using fast-drying materials purposes RC Scale variant internal-mix airbrush singleaction button releases both air paint paint quantity easily variable secondary control rear tip end airbrush continuously variable double-action device less difficult master operating techniques paint density re p[J ii uFu i TOPKICK 47 Wingspan Splendid Contest D...I NEW ENGINE MAKE READY $2995 plus postage Complete Dis-Assembly Deburr Check Fits Clean & Re-Assemble READY TO RUN Send Leland Morton L M Hobbies 115 Cochran Mesquite TX 75181 Most versatile number uses DetaiV Touch-Up gun used specialty auto paint shops can cover spray patterns -in RADIUS TOOL NrnmGd TUNGSTEN CARBIDE Mans Hardest Material 1 next Diamond LIFETIME SANDING S ..TOOL 4 9 f 00 OLS IN ONE MONEY BACK pGUARANTEE Y4 Radius TOOL ONLY Ohio add 6% sales tax $695 pp Check Money Order No CODS Wholesale & Dealer Inquiries Invited D G PRODUCTS CO 209 CARRLANDS DR DAYTON OHIO 45429 TAPER ACETM Rib Profiler makes tapered eliptical wing design easy Curve plates provided draw 3 different full symmetrical 3 different semi-symmetrical airfoils Flat bottom airfoils can also drawn Send check MO $2495 Jim Denaro Model Products 543 Bedford Street Concord MA 01742 Works faster computerl Adjusts locks size rib instantly THE PEANUT-PEOPLE PRESENT PEANUT SCALE MODELS MUSTANG MILES M-I8ZERO DRUINEPIETENPOL COUGARPIPER CUB GIPSY MOTHANDRESON GANAGOBIELACEY M-l0 Rubber Powered Balsa TIssue Kits $595 SPORT MODELS PRAIRIE BIRD $595 BABY ACE$649 ONE NITE 28$695 ONE NITE iS$595 STRINGLESS WONDER$495 PECK ROG$195 RUBBER OR CO2 POWERED IHILDING NEEDS zzZL PROPS TISSUE RUBBER WINDERS BLADE SHARPENERS BEARINGS PROP SHAFTS LUBE WASHERS WHEELS FUSE CO-2 MOTORS BOOKS PLANS asd MORE ADVENTURE MODELS PONY BLIMP il-FT RIC AIRSHIP KIT $24900 COMPLETE CATALOG $100 HARD TO FIND ITEMS FOR RUBBER MODELS AND AIRSHIPS Peck-Petymers mains constant work long airbrush kept moving constant rate appears useful airbrush non-professional provided its application con fined small areas model has masked detail snipe can painted large spray gun wasteful paint thinner may times paint mask model much thinner needed clean gun used models stripe $10 per gallon thinner smaller quantity used airbrush small areas eventually pays cost brush spray painting humid weather likely some condensation water hose leading gun airbrush can carried out through nozzle spoil finish likely occur systems have no storage air tank air fed diaphragm compressor directly sprayer water trap can used air line avoid problem Sudden rapid expansion air spray tip causes temperature drop releases moisture combined evaporation cooling models surface condense water surrounding humid air cause blushing dulling surface gloss severe cases surface turns milky white Avoid condition spraying dry days Dont pump up tank humid day spray dry weather have blush dry weather moist air tank drain plug bottom tank release condensate stop blush add retarder dope slows down rapid evaporation solvents slows drying Retarder also helps slow rapid drying offspray reduces gloss Heating dope safe manner 2Oo 300F may also bene P 0 BOX 2498-MALA MESA CALIF 92041 PHONE 714 469-8675 714 442-4636 ficial reducing blush amount retarder depends upon relative humidity Aircraft chanics have told us sometimes use retarder place thinner during high-humidity periods midsummer job could delayed preferred surface preparation silk clear dope -oz glass cloth polyester resin filled sanded brushed coats up point color application Only pigmented material sprayed surface absolutely smooth no cloth weave visible must filled sanded finished smooth condition before application color pro cedure evolved because found color coats build weight quickly should kept minimum have never used two sprayed color coats spray area garage doors open ventilation production gun will fill garage solvent fog two minutes permit clear out before spraying next piece Wear mask protect against breathing solvent vapors spray quickly move out fresh air ventilated spray booth would best very few modelers have have wooden bracket nailed garage wall has two dowels extending four feet Out ward wall support part being sprayed enables operator walk com pletely around work Wing fuselage supported dowels about three feet above floor Spraying downward horizontal surface minimizes runs spray surface large parts second surface done after first dries Small parts such tail surfaces supported bent wire brackets made coat hangers held hand spraying tie other permits surfaces 102 Model Aviation CRICKET HELICOPTER & PARTS Cricket$19995 Built w/HB 21 PDP eng Installed$29995 RTF n Adjusted & fully tested Bill Curtis$59995 Included H8 21 Eng & Futaba 4L Radio Cricket Parts Expert Help 412-342-5740 Shipping included MC visa COD Ck worder PLAZA HOBBYCRAFT 3473 E State Street Sharon PA 16146 $89395 Maple Prop included Exhaust may positioned left right facing rearward Full Size FOX 19 BB-RC Engine Drawing available request runs great economical Fox Gold Star Fuel new FOX 19 BB-RC handstarts ease yet stressed radial loads imposed electric starters beltdrive spur gear systems two large 11mm Ball Bearings front rear Its got smooth low idle too years engine life known millionodd engines taught us covered Spraying techniques sequences vary part being finished its shape prefer ence wing example spray bottom first beginning edges followed flat surfaces wing too wide cover pass gun spray near side first gun held angle about 450 follow second pass along far side technique covers off-spray first pass wet coat second Repeat top surface after bottom has dried cold weather wet parts carried indoors drying Crumpled newspapers stuffed openings model spray should penetrate slow-drying materials epoxy example preferred spray top bottom same time part suspended manner can turned New ducted fan book us have impressed success ducted fan models Nats recent first place win Tom Cooks F-S Phantom Scale Masters Tournament new book Dick Sarpolus sums up what need know entry exciting phase Scale modeling book helps us get ducted fans having reinvent things others have already done Dick Sarpolus no stranger have reading magazines Forty designs have appeared construction articles book explains operation ducted fans lists accessories needed tells build fly ducted fan model planes book also contains up-to-date listing ducted fan units suitable engines currently available ducted fan air craft kits consists 52 magazine-size pages how-to text includes 1 34 photos drawings Dicks book titled Building Flting Ducted Fan RCA ircraft $695 avail able hobby shops book stores direct Kalmbach Books 1027 N 7th St. Milwaukee WI 53233 Include postage handling US $75 foreign $125 Bob andDolh Wiseher Rt 1 S-221 Lapham Peak Rd Delafield WI 53018 RC Aerobatics/Van Putte Continued page 41 rpm increases peak-power rpm moves through Obviously engine broad power curve definite advantage STOL operation because power output wont vary much rpm What rye written far hasnt really answered question can answer satisfactorily youby doing kinds experiments have done already practical way attack situation deter what prop gives static thrust youve done already try prop pitch diameter somewhat higher Probably best prop try same pitch larger diameter After determining static thrust untouched larger prop try trimming tips little bit time until get down diameter previous prop Since Top Flite 11-5 Super Maple superior static ally try 12-5 go After reading what just wrote started shaking head must potent Enya 29 have swing 11-5 prop used fly Enya 45 11-6 props years ago much bigger engine 29 Good luck Continued page 108 ANOTHER GREAT WINDER List $5625 Plus diipping JOHN MORRILLS SIDEWINDER Precision Built Heavy Duty Windert March 1982 103 18000 RPMs Hot Pertarmance tion CANADIAN HOBBY DEALERS von can now order Fox Model Products direct fac tory Standard discounts apply Freight Prepaid except fuel Most Fox Products should Tariff Free under provi sions Taritt Item 62435-1 Gall us write further details 535 Towson Ave Fort Smith Arkansas 72901 $100 FOR CATALOG CUSTOM TUNED ENGINES COMPETITION ACCESSORIES Specialists custom 70 049/051 reed engines Throttled TD available Complete inventory individual stock custom parts Cox 70 020 049 051 & 09 engines Exclusive distributor Nelson 15 engine parts Hard-to-get items such custom needle valves racing wheels quick fills fuel shut-a fis solid control lines others detailed brochure send 25 cents Kustom Kraftsmanship Box 2699 Laguna Hills CA 92653 Ph 714 830-5162
Edition: Model Aviation - 1982/03
Page Numbers: 38, 39, 101, 102, 103
Control SCALE Bob & Dolly Wischer PAINT FINISHES have become quite familiar paints used model railroaders because son Bill connected industry As mentioned past columns Floquil flat finish fuel proof low-nitro content fuels However Floquil markets clear overcoat called Flat Finish fuel proof should used over paint area fuel castor oil makes contact leaves sticky mess cant removed Flo quil its best military aircraft authen tic flat finish easily applied airbrush Camouflage weathering its best uses metal parts should applied over primer good adhesion Another model railroad paint have used 10 years planes Scalecoat paint comes same wide variety colors Floquil dried surface semi-gloss rather flat doesnt require primer used over metal particular application experience metal nose cowling fabric-covered plane finished dope As modelers know dope has very poor adherence metal 75 Scalecoat colors can mixed match dope model maximum adhesion metal parts speed drying Scalecoat should baked use kitchen oven 2000F two hours Without baking drying slow dust collection wet surface can problem After 10 years hundreds flights no chipping wear along metal edges no evidence change exposure 10% nitro fuel exhaust residue certain good adherence metal parts should thoroughly cleaned kitchen clean ser wiped lint-free cloth soaked dope thinner After cleaning surface painted should touched order avoid depositing skin oil Scalecoat can successfully brushed prefer use airbrush after thinning about 25% Low-temperature baking causes paint sieze metal surface tightly will chip metal can actually bent effect paint Too high baking HawkerTempest Sport-Scale scratcfl-bullt Vito TOmeo Ship spans 80 uses OS 90 15-6 prop fly Finish K&B resin over auto primer -oz fiberglass cloth Scale features include sliding canopy operating split flaps jettisonable external tanks Marvin Saulters North American B-25 Mitchell modified Royal kit weighsl 3 lb isfinished K&B resin epoxy Apairof K&B 40 engines furnish power Photographed 81 Nats Bill Coombes Grumman F6F-3 Hellcat began life Jemco kit Sport Scale Nats entry finished Polly-S Floquil paint uses Rhom retracts Robart landing gear OS Max 60 John Pagan several Nats contestants entertwO events larger Bucker Jungmeister 1/4-scale Platt kit flown Giant class smaller version Sport Scale model based Flyline kit used Davis Diesel-ized 10 engine temperature can cause slight darkening hue have found degree gloss attained very similar dope no aftertreatment polishing necessary Spray painting better investments years ago purchase onehorsepower two-cylinder air compressor spray painting size compressor capable maintaining 40 pounds pressure flow rate six cubic feet per minute quantity air seldom ever needed Scale modeling Large amounts air required using one-quart production spray gun full-time operation using less half compressor capacity Most spray work done airbrushes consumes air much lower rate average model spraying one-third horsepower diaphragmtype compressor sufficient dope work above-mentioned produc tion gun working 40 pounds externalmix nozzle will coat side six-ft wing less minute covering 6-in wide swath sweep Partially depressing trigger starts air flow full movement releases liquid flow Its advantage will cover large surface quickly areas wet leaving no boundary between wet dry smaller gun covers less area boundary over-spray may need polished out later wet sanding rubbing compound An external-mix nozzle necessary working fast-drying materials such dope lacquer acrylics nozzle no pressure paint container liquid drawn up mixing point siphoning action mixing air point emerges nozzle has air holes its sides form fan-type spray pattern widens area covered Because heavy liquids dont siphon readily always need bethinned spray ingup 50% thick dope Use fastdrying materials internal-mix nozzles causes clogging Continued page 101 Bob Karissons Grumman FM-2 Wildcat three Nats entries using geared Webra 60 engine Cowl flaps wing flaps operate automaticallywith change airspeed Model 1 /6-scale weighs 13 lb Finish fiberglass cloth fuselage silk dope wings tail Butyrate dope covers photos Nats Ed Couchs Republic F-84F Thunderatreak will kit sometime future Fiberglass fuse foam wing stab OPS 61 drives Byron fan unit uses Byron tuned pipe too model finished K&B epoxy uses Rhom retracts OUR MOUNTS ARE TOUGH AS NAILS BUT LOT EASIER TO USE Octagonal design easy alignment DONT FORGET OUR OTHER FINE ACCESSORIES Striping Tape Now 9 colors 4 widths Masking Tape Inexpensive vinyl tape get sharp clean linesNow available black white 6 sizes tough aluminum dual landing gear foryoursport model Great quarter scalers Landing Gear Hardwood struts Thousands modelers have tried Great Planes mounts because theyre easy use versatile design reasonably priced Ask local retailer size fit enginel offer variety 7 different mounts make sure youll get proper fit choose between 05 09 15 19 40 60 60 long mounts FORMERLYoBO%72~oiS 61801 BRIDI oaavURBAN~ 2171367206 March 198239 Can drilled nosegear mount Mount engine vertically 45 90 degrees Tough glass-filled nylon material IIIIDN EW/Il Gasoline/Diesel Fuel Conversion Kit Sullivan Fuel Tanks Now can use Sullivan tanks gasoline diesel powered models fuel conversion kit can fill yourSullivan regularfuel gas tank gasoline diesel fuel Save money check out kit Heres what youll get 8 large BUNA-N tubing 3 Barbed fittings 1 BUNA-N stopper 4 Nylon lock ties Also available 3 ft length large BUNA-N tubing 1/8 ID 3 ft length medium BUNA-N tubing 3/32 lD GOLD-NI PUSH RODS Positive No Bind Flight Control I I Write Free Fact Sheet I UThe push /rodsthat beat Uthe clog Pat Iented splines /inner rod cut right I/through mess //Temperature compen sated prevent / elongation Good gold UInsist Gold-N-Rod Iclevis incguded I I U I I I I I I I I I I SINGLE GEAR FITS NOSE OR MAIN GEAR SMODOTH LANDINGS. hug turf Strong lightweight REALISTIC landing gears eliminate erratic vi bration feature short fulcrum ground hugging ability Caster action Adjustable pressure Easy customize Four sizes fit wheels 1 3 Ask about e tail gear thinking Coxs proposed 40 discovered 05 1 just stood disbelief let flying partner Denny Sumner fly did whole flight rolling circles takeoff through dead-stick landing final roll less 50 feet before touchdown feet during flight crowd believing aileron servo locked full right After held small clinic flying local club members apparently quite experience since never seen aileron hot engine hope can experience fun have Happy flying Radio Technique/Myers Continued page 29 walk off leave something charge wrote column time expect youll reading about Christmas Ill wish Seasons Greetings hope Peace Earth will become reality soon Keep letters flowing Editors note Publication column delayed month time George expected appear Thats youre reading after holiday season RMcM George M Myers 70 Froehlich Farm Rd Hicksville NY 11801 RC Scale/Wischers Co ntinued page 39 3-in width depending upon size nozzle tip used Its cup will hold paint side large wing means frequent refilling Its advantage light weight easy manipulation flexibility Its disadvantage high cost Lowest cost singie-action externalmix airbrush maximum versatility three sizes spray tips cover areas -in 2-in diameter Depressing button releases air fluid simultaneously no provision changing spray pattern round oblong larger guns Because small area largest tip very difficult get uniform density color Best use airbrush spraying small areas trim color after masking have found singleaction airbrush useful large areas paints such Floquil simply practical doping full area complete model camouflage weathering doubleaction internal-mix airbrush has no equal brush really different air paint mixed inside spray tip thorough atomiza tion resulting almost complete elimination over-spray Depressing button releases air moving button rearward controls quantity liquid spray diameter Dont expect learn technique recently-completed super- Scale model takes patience develop ment sIdlI Another disadvantage intemal mix spray tip frequent cleaning required using fast-drying materials purposes RC Scale variant internal-mix airbrush singleaction button releases both air paint paint quantity easily variable secondary control rear tip end airbrush continuously variable double-action device less difficult master operating techniques paint density re p[J ii uFu i TOPKICK 47 Wingspan Splendid Contest D...I NEW ENGINE MAKE READY $2995 plus postage Complete Dis-Assembly Deburr Check Fits Clean & Re-Assemble READY TO RUN Send Leland Morton L M Hobbies 115 Cochran Mesquite TX 75181 Most versatile number uses DetaiV Touch-Up gun used specialty auto paint shops can cover spray patterns -in RADIUS TOOL NrnmGd TUNGSTEN CARBIDE Mans Hardest Material 1 next Diamond LIFETIME SANDING S ..TOOL 4 9 f 00 OLS IN ONE MONEY BACK pGUARANTEE Y4 Radius TOOL ONLY Ohio add 6% sales tax $695 pp Check Money Order No CODS Wholesale & Dealer Inquiries Invited D G PRODUCTS CO 209 CARRLANDS DR DAYTON OHIO 45429 TAPER ACETM Rib Profiler makes tapered eliptical wing design easy Curve plates provided draw 3 different full symmetrical 3 different semi-symmetrical airfoils Flat bottom airfoils can also drawn Send check MO $2495 Jim Denaro Model Products 543 Bedford Street Concord MA 01742 Works faster computerl Adjusts locks size rib instantly THE PEANUT-PEOPLE PRESENT PEANUT SCALE MODELS MUSTANG MILES M-I8ZERO DRUINEPIETENPOL COUGARPIPER CUB GIPSY MOTHANDRESON GANAGOBIELACEY M-l0 Rubber Powered Balsa TIssue Kits $595 SPORT MODELS PRAIRIE BIRD $595 BABY ACE$649 ONE NITE 28$695 ONE NITE iS$595 STRINGLESS WONDER$495 PECK ROG$195 RUBBER OR CO2 POWERED IHILDING NEEDS zzZL PROPS TISSUE RUBBER WINDERS BLADE SHARPENERS BEARINGS PROP SHAFTS LUBE WASHERS WHEELS FUSE CO-2 MOTORS BOOKS PLANS asd MORE ADVENTURE MODELS PONY BLIMP il-FT RIC AIRSHIP KIT $24900 COMPLETE CATALOG $100 HARD TO FIND ITEMS FOR RUBBER MODELS AND AIRSHIPS Peck-Petymers mains constant work long airbrush kept moving constant rate appears useful airbrush non-professional provided its application con fined small areas model has masked detail snipe can painted large spray gun wasteful paint thinner may times paint mask model much thinner needed clean gun used models stripe $10 per gallon thinner smaller quantity used airbrush small areas eventually pays cost brush spray painting humid weather likely some condensation water hose leading gun airbrush can carried out through nozzle spoil finish likely occur systems have no storage air tank air fed diaphragm compressor directly sprayer water trap can used air line avoid problem Sudden rapid expansion air spray tip causes temperature drop releases moisture combined evaporation cooling models surface condense water surrounding humid air cause blushing dulling surface gloss severe cases surface turns milky white Avoid condition spraying dry days Dont pump up tank humid day spray dry weather have blush dry weather moist air tank drain plug bottom tank release condensate stop blush add retarder dope slows down rapid evaporation solvents slows drying Retarder also helps slow rapid drying offspray reduces gloss Heating dope safe manner 2Oo 300F may also bene P 0 BOX 2498-MALA MESA CALIF 92041 PHONE 714 469-8675 714 442-4636 ficial reducing blush amount retarder depends upon relative humidity Aircraft chanics have told us sometimes use retarder place thinner during high-humidity periods midsummer job could delayed preferred surface preparation silk clear dope -oz glass cloth polyester resin filled sanded brushed coats up point color application Only pigmented material sprayed surface absolutely smooth no cloth weave visible must filled sanded finished smooth condition before application color pro cedure evolved because found color coats build weight quickly should kept minimum have never used two sprayed color coats spray area garage doors open ventilation production gun will fill garage solvent fog two minutes permit clear out before spraying next piece Wear mask protect against breathing solvent vapors spray quickly move out fresh air ventilated spray booth would best very few modelers have have wooden bracket nailed garage wall has two dowels extending four feet Out ward wall support part being sprayed enables operator walk com pletely around work Wing fuselage supported dowels about three feet above floor Spraying downward horizontal surface minimizes runs spray surface large parts second surface done after first dries Small parts such tail surfaces supported bent wire brackets made coat hangers held hand spraying tie other permits surfaces 102 Model Aviation CRICKET HELICOPTER & PARTS Cricket$19995 Built w/HB 21 PDP eng Installed$29995 RTF n Adjusted & fully tested Bill Curtis$59995 Included H8 21 Eng & Futaba 4L Radio Cricket Parts Expert Help 412-342-5740 Shipping included MC visa COD Ck worder PLAZA HOBBYCRAFT 3473 E State Street Sharon PA 16146 $89395 Maple Prop included Exhaust may positioned left right facing rearward Full Size FOX 19 BB-RC Engine Drawing available request runs great economical Fox Gold Star Fuel new FOX 19 BB-RC handstarts ease yet stressed radial loads imposed electric starters beltdrive spur gear systems two large 11mm Ball Bearings front rear Its got smooth low idle too years engine life known millionodd engines taught us covered Spraying techniques sequences vary part being finished its shape prefer ence wing example spray bottom first beginning edges followed flat surfaces wing too wide cover pass gun spray near side first gun held angle about 450 follow second pass along far side technique covers off-spray first pass wet coat second Repeat top surface after bottom has dried cold weather wet parts carried indoors drying Crumpled newspapers stuffed openings model spray should penetrate slow-drying materials epoxy example preferred spray top bottom same time part suspended manner can turned New ducted fan book us have impressed success ducted fan models Nats recent first place win Tom Cooks F-S Phantom Scale Masters Tournament new book Dick Sarpolus sums up what need know entry exciting phase Scale modeling book helps us get ducted fans having reinvent things others have already done Dick Sarpolus no stranger have reading magazines Forty designs have appeared construction articles book explains operation ducted fans lists accessories needed tells build fly ducted fan model planes book also contains up-to-date listing ducted fan units suitable engines currently available ducted fan air craft kits consists 52 magazine-size pages how-to text includes 1 34 photos drawings Dicks book titled Building Flting Ducted Fan RCA ircraft $695 avail able hobby shops book stores direct Kalmbach Books 1027 N 7th St. Milwaukee WI 53233 Include postage handling US $75 foreign $125 Bob andDolh Wiseher Rt 1 S-221 Lapham Peak Rd Delafield WI 53018 RC Aerobatics/Van Putte Continued page 41 rpm increases peak-power rpm moves through Obviously engine broad power curve definite advantage STOL operation because power output wont vary much rpm What rye written far hasnt really answered question can answer satisfactorily youby doing kinds experiments have done already practical way attack situation deter what prop gives static thrust youve done already try prop pitch diameter somewhat higher Probably best prop try same pitch larger diameter After determining static thrust untouched larger prop try trimming tips little bit time until get down diameter previous prop Since Top Flite 11-5 Super Maple superior static ally try 12-5 go After reading what just wrote started shaking head must potent Enya 29 have swing 11-5 prop used fly Enya 45 11-6 props years ago much bigger engine 29 Good luck Continued page 108 ANOTHER GREAT WINDER List $5625 Plus diipping JOHN MORRILLS SIDEWINDER Precision Built Heavy Duty Windert March 1982 103 18000 RPMs Hot Pertarmance tion CANADIAN HOBBY DEALERS von can now order Fox Model Products direct fac tory Standard discounts apply Freight Prepaid except fuel Most Fox Products should Tariff Free under provi sions Taritt Item 62435-1 Gall us write further details 535 Towson Ave Fort Smith Arkansas 72901 $100 FOR CATALOG CUSTOM TUNED ENGINES COMPETITION ACCESSORIES Specialists custom 70 049/051 reed engines Throttled TD available Complete inventory individual stock custom parts Cox 70 020 049 051 & 09 engines Exclusive distributor Nelson 15 engine parts Hard-to-get items such custom needle valves racing wheels quick fills fuel shut-a fis solid control lines others detailed brochure send 25 cents Kustom Kraftsmanship Box 2699 Laguna Hills CA 92653 Ph 714 830-5162
Edition: Model Aviation - 1982/03
Page Numbers: 38, 39, 101, 102, 103
Control SCALE Bob & Dolly Wischer PAINT FINISHES have become quite familiar paints used model railroaders because son Bill connected industry As mentioned past columns Floquil flat finish fuel proof low-nitro content fuels However Floquil markets clear overcoat called Flat Finish fuel proof should used over paint area fuel castor oil makes contact leaves sticky mess cant removed Flo quil its best military aircraft authen tic flat finish easily applied airbrush Camouflage weathering its best uses metal parts should applied over primer good adhesion Another model railroad paint have used 10 years planes Scalecoat paint comes same wide variety colors Floquil dried surface semi-gloss rather flat doesnt require primer used over metal particular application experience metal nose cowling fabric-covered plane finished dope As modelers know dope has very poor adherence metal 75 Scalecoat colors can mixed match dope model maximum adhesion metal parts speed drying Scalecoat should baked use kitchen oven 2000F two hours Without baking drying slow dust collection wet surface can problem After 10 years hundreds flights no chipping wear along metal edges no evidence change exposure 10% nitro fuel exhaust residue certain good adherence metal parts should thoroughly cleaned kitchen clean ser wiped lint-free cloth soaked dope thinner After cleaning surface painted should touched order avoid depositing skin oil Scalecoat can successfully brushed prefer use airbrush after thinning about 25% Low-temperature baking causes paint sieze metal surface tightly will chip metal can actually bent effect paint Too high baking HawkerTempest Sport-Scale scratcfl-bullt Vito TOmeo Ship spans 80 uses OS 90 15-6 prop fly Finish K&B resin over auto primer -oz fiberglass cloth Scale features include sliding canopy operating split flaps jettisonable external tanks Marvin Saulters North American B-25 Mitchell modified Royal kit weighsl 3 lb isfinished K&B resin epoxy Apairof K&B 40 engines furnish power Photographed 81 Nats Bill Coombes Grumman F6F-3 Hellcat began life Jemco kit Sport Scale Nats entry finished Polly-S Floquil paint uses Rhom retracts Robart landing gear OS Max 60 John Pagan several Nats contestants entertwO events larger Bucker Jungmeister 1/4-scale Platt kit flown Giant class smaller version Sport Scale model based Flyline kit used Davis Diesel-ized 10 engine temperature can cause slight darkening hue have found degree gloss attained very similar dope no aftertreatment polishing necessary Spray painting better investments years ago purchase onehorsepower two-cylinder air compressor spray painting size compressor capable maintaining 40 pounds pressure flow rate six cubic feet per minute quantity air seldom ever needed Scale modeling Large amounts air required using one-quart production spray gun full-time operation using less half compressor capacity Most spray work done airbrushes consumes air much lower rate average model spraying one-third horsepower diaphragmtype compressor sufficient dope work above-mentioned produc tion gun working 40 pounds externalmix nozzle will coat side six-ft wing less minute covering 6-in wide swath sweep Partially depressing trigger starts air flow full movement releases liquid flow Its advantage will cover large surface quickly areas wet leaving no boundary between wet dry smaller gun covers less area boundary over-spray may need polished out later wet sanding rubbing compound An external-mix nozzle necessary working fast-drying materials such dope lacquer acrylics nozzle no pressure paint container liquid drawn up mixing point siphoning action mixing air point emerges nozzle has air holes its sides form fan-type spray pattern widens area covered Because heavy liquids dont siphon readily always need bethinned spray ingup 50% thick dope Use fastdrying materials internal-mix nozzles causes clogging Continued page 101 Bob Karissons Grumman FM-2 Wildcat three Nats entries using geared Webra 60 engine Cowl flaps wing flaps operate automaticallywith change airspeed Model 1 /6-scale weighs 13 lb Finish fiberglass cloth fuselage silk dope wings tail Butyrate dope covers photos Nats Ed Couchs Republic F-84F Thunderatreak will kit sometime future Fiberglass fuse foam wing stab OPS 61 drives Byron fan unit uses Byron tuned pipe too model finished K&B epoxy uses Rhom retracts OUR MOUNTS ARE TOUGH AS NAILS BUT LOT EASIER TO USE Octagonal design easy alignment DONT FORGET OUR OTHER FINE ACCESSORIES Striping Tape Now 9 colors 4 widths Masking Tape Inexpensive vinyl tape get sharp clean linesNow available black white 6 sizes tough aluminum dual landing gear foryoursport model Great quarter scalers Landing Gear Hardwood struts Thousands modelers have tried Great Planes mounts because theyre easy use versatile design reasonably priced Ask local retailer size fit enginel offer variety 7 different mounts make sure youll get proper fit choose between 05 09 15 19 40 60 60 long mounts FORMERLYoBO%72~oiS 61801 BRIDI oaavURBAN~ 2171367206 March 198239 Can drilled nosegear mount Mount engine vertically 45 90 degrees Tough glass-filled nylon material IIIIDN EW/Il Gasoline/Diesel Fuel Conversion Kit Sullivan Fuel Tanks Now can use Sullivan tanks gasoline diesel powered models fuel conversion kit can fill yourSullivan regularfuel gas tank gasoline diesel fuel Save money check out kit Heres what youll get 8 large BUNA-N tubing 3 Barbed fittings 1 BUNA-N stopper 4 Nylon lock ties Also available 3 ft length large BUNA-N tubing 1/8 ID 3 ft length medium BUNA-N tubing 3/32 lD GOLD-NI PUSH RODS Positive No Bind Flight Control I I Write Free Fact Sheet I UThe push /rodsthat beat Uthe clog Pat Iented splines /inner rod cut right I/through mess //Temperature compen sated prevent / elongation Good gold UInsist Gold-N-Rod Iclevis incguded I I U I I I I I I I I I I SINGLE GEAR FITS NOSE OR MAIN GEAR SMODOTH LANDINGS. hug turf Strong lightweight REALISTIC landing gears eliminate erratic vi bration feature short fulcrum ground hugging ability Caster action Adjustable pressure Easy customize Four sizes fit wheels 1 3 Ask about e tail gear thinking Coxs proposed 40 discovered 05 1 just stood disbelief let flying partner Denny Sumner fly did whole flight rolling circles takeoff through dead-stick landing final roll less 50 feet before touchdown feet during flight crowd believing aileron servo locked full right After held small clinic flying local club members apparently quite experience since never seen aileron hot engine hope can experience fun have Happy flying Radio Technique/Myers Continued page 29 walk off leave something charge wrote column time expect youll reading about Christmas Ill wish Seasons Greetings hope Peace Earth will become reality soon Keep letters flowing Editors note Publication column delayed month time George expected appear Thats youre reading after holiday season RMcM George M Myers 70 Froehlich Farm Rd Hicksville NY 11801 RC Scale/Wischers Co ntinued page 39 3-in width depending upon size nozzle tip used Its cup will hold paint side large wing means frequent refilling Its advantage light weight easy manipulation flexibility Its disadvantage high cost Lowest cost singie-action externalmix airbrush maximum versatility three sizes spray tips cover areas -in 2-in diameter Depressing button releases air fluid simultaneously no provision changing spray pattern round oblong larger guns Because small area largest tip very difficult get uniform density color Best use airbrush spraying small areas trim color after masking have found singleaction airbrush useful large areas paints such Floquil simply practical doping full area complete model camouflage weathering doubleaction internal-mix airbrush has no equal brush really different air paint mixed inside spray tip thorough atomiza tion resulting almost complete elimination over-spray Depressing button releases air moving button rearward controls quantity liquid spray diameter Dont expect learn technique recently-completed super- Scale model takes patience develop ment sIdlI Another disadvantage intemal mix spray tip frequent cleaning required using fast-drying materials purposes RC Scale variant internal-mix airbrush singleaction button releases both air paint paint quantity easily variable secondary control rear tip end airbrush continuously variable double-action device less difficult master operating techniques paint density re p[J ii uFu i TOPKICK 47 Wingspan Splendid Contest D...I NEW ENGINE MAKE READY $2995 plus postage Complete Dis-Assembly Deburr Check Fits Clean & Re-Assemble READY TO RUN Send Leland Morton L M Hobbies 115 Cochran Mesquite TX 75181 Most versatile number uses DetaiV Touch-Up gun used specialty auto paint shops can cover spray patterns -in RADIUS TOOL NrnmGd TUNGSTEN CARBIDE Mans Hardest Material 1 next Diamond LIFETIME SANDING S ..TOOL 4 9 f 00 OLS IN ONE MONEY BACK pGUARANTEE Y4 Radius TOOL ONLY Ohio add 6% sales tax $695 pp Check Money Order No CODS Wholesale & Dealer Inquiries Invited D G PRODUCTS CO 209 CARRLANDS DR DAYTON OHIO 45429 TAPER ACETM Rib Profiler makes tapered eliptical wing design easy Curve plates provided draw 3 different full symmetrical 3 different semi-symmetrical airfoils Flat bottom airfoils can also drawn Send check MO $2495 Jim Denaro Model Products 543 Bedford Street Concord MA 01742 Works faster computerl Adjusts locks size rib instantly THE PEANUT-PEOPLE PRESENT PEANUT SCALE MODELS MUSTANG MILES M-I8ZERO DRUINEPIETENPOL COUGARPIPER CUB GIPSY MOTHANDRESON GANAGOBIELACEY M-l0 Rubber Powered Balsa TIssue Kits $595 SPORT MODELS PRAIRIE BIRD $595 BABY ACE$649 ONE NITE 28$695 ONE NITE iS$595 STRINGLESS WONDER$495 PECK ROG$195 RUBBER OR CO2 POWERED IHILDING NEEDS zzZL PROPS TISSUE RUBBER WINDERS BLADE SHARPENERS BEARINGS PROP SHAFTS LUBE WASHERS WHEELS FUSE CO-2 MOTORS BOOKS PLANS asd MORE ADVENTURE MODELS PONY BLIMP il-FT RIC AIRSHIP KIT $24900 COMPLETE CATALOG $100 HARD TO FIND ITEMS FOR RUBBER MODELS AND AIRSHIPS Peck-Petymers mains constant work long airbrush kept moving constant rate appears useful airbrush non-professional provided its application con fined small areas model has masked detail snipe can painted large spray gun wasteful paint thinner may times paint mask model much thinner needed clean gun used models stripe $10 per gallon thinner smaller quantity used airbrush small areas eventually pays cost brush spray painting humid weather likely some condensation water hose leading gun airbrush can carried out through nozzle spoil finish likely occur systems have no storage air tank air fed diaphragm compressor directly sprayer water trap can used air line avoid problem Sudden rapid expansion air spray tip causes temperature drop releases moisture combined evaporation cooling models surface condense water surrounding humid air cause blushing dulling surface gloss severe cases surface turns milky white Avoid condition spraying dry days Dont pump up tank humid day spray dry weather have blush dry weather moist air tank drain plug bottom tank release condensate stop blush add retarder dope slows down rapid evaporation solvents slows drying Retarder also helps slow rapid drying offspray reduces gloss Heating dope safe manner 2Oo 300F may also bene P 0 BOX 2498-MALA MESA CALIF 92041 PHONE 714 469-8675 714 442-4636 ficial reducing blush amount retarder depends upon relative humidity Aircraft chanics have told us sometimes use retarder place thinner during high-humidity periods midsummer job could delayed preferred surface preparation silk clear dope -oz glass cloth polyester resin filled sanded brushed coats up point color application Only pigmented material sprayed surface absolutely smooth no cloth weave visible must filled sanded finished smooth condition before application color pro cedure evolved because found color coats build weight quickly should kept minimum have never used two sprayed color coats spray area garage doors open ventilation production gun will fill garage solvent fog two minutes permit clear out before spraying next piece Wear mask protect against breathing solvent vapors spray quickly move out fresh air ventilated spray booth would best very few modelers have have wooden bracket nailed garage wall has two dowels extending four feet Out ward wall support part being sprayed enables operator walk com pletely around work Wing fuselage supported dowels about three feet above floor Spraying downward horizontal surface minimizes runs spray surface large parts second surface done after first dries Small parts such tail surfaces supported bent wire brackets made coat hangers held hand spraying tie other permits surfaces 102 Model Aviation CRICKET HELICOPTER & PARTS Cricket$19995 Built w/HB 21 PDP eng Installed$29995 RTF n Adjusted & fully tested Bill Curtis$59995 Included H8 21 Eng & Futaba 4L Radio Cricket Parts Expert Help 412-342-5740 Shipping included MC visa COD Ck worder PLAZA HOBBYCRAFT 3473 E State Street Sharon PA 16146 $89395 Maple Prop included Exhaust may positioned left right facing rearward Full Size FOX 19 BB-RC Engine Drawing available request runs great economical Fox Gold Star Fuel new FOX 19 BB-RC handstarts ease yet stressed radial loads imposed electric starters beltdrive spur gear systems two large 11mm Ball Bearings front rear Its got smooth low idle too years engine life known millionodd engines taught us covered Spraying techniques sequences vary part being finished its shape prefer ence wing example spray bottom first beginning edges followed flat surfaces wing too wide cover pass gun spray near side first gun held angle about 450 follow second pass along far side technique covers off-spray first pass wet coat second Repeat top surface after bottom has dried cold weather wet parts carried indoors drying Crumpled newspapers stuffed openings model spray should penetrate slow-drying materials epoxy example preferred spray top bottom same time part suspended manner can turned New ducted fan book us have impressed success ducted fan models Nats recent first place win Tom Cooks F-S Phantom Scale Masters Tournament new book Dick Sarpolus sums up what need know entry exciting phase Scale modeling book helps us get ducted fans having reinvent things others have already done Dick Sarpolus no stranger have reading magazines Forty designs have appeared construction articles book explains operation ducted fans lists accessories needed tells build fly ducted fan model planes book also contains up-to-date listing ducted fan units suitable engines currently available ducted fan air craft kits consists 52 magazine-size pages how-to text includes 1 34 photos drawings Dicks book titled Building Flting Ducted Fan RCA ircraft $695 avail able hobby shops book stores direct Kalmbach Books 1027 N 7th St. Milwaukee WI 53233 Include postage handling US $75 foreign $125 Bob andDolh Wiseher Rt 1 S-221 Lapham Peak Rd Delafield WI 53018 RC Aerobatics/Van Putte Continued page 41 rpm increases peak-power rpm moves through Obviously engine broad power curve definite advantage STOL operation because power output wont vary much rpm What rye written far hasnt really answered question can answer satisfactorily youby doing kinds experiments have done already practical way attack situation deter what prop gives static thrust youve done already try prop pitch diameter somewhat higher Probably best prop try same pitch larger diameter After determining static thrust untouched larger prop try trimming tips little bit time until get down diameter previous prop Since Top Flite 11-5 Super Maple superior static ally try 12-5 go After reading what just wrote started shaking head must potent Enya 29 have swing 11-5 prop used fly Enya 45 11-6 props years ago much bigger engine 29 Good luck Continued page 108 ANOTHER GREAT WINDER List $5625 Plus diipping JOHN MORRILLS SIDEWINDER Precision Built Heavy Duty Windert March 1982 103 18000 RPMs Hot Pertarmance tion CANADIAN HOBBY DEALERS von can now order Fox Model Products direct fac tory Standard discounts apply Freight Prepaid except fuel Most Fox Products should Tariff Free under provi sions Taritt Item 62435-1 Gall us write further details 535 Towson Ave Fort Smith Arkansas 72901 $100 FOR CATALOG CUSTOM TUNED ENGINES COMPETITION ACCESSORIES Specialists custom 70 049/051 reed engines Throttled TD available Complete inventory individual stock custom parts Cox 70 020 049 051 & 09 engines Exclusive distributor Nelson 15 engine parts Hard-to-get items such custom needle valves racing wheels quick fills fuel shut-a fis solid control lines others detailed brochure send 25 cents Kustom Kraftsmanship Box 2699 Laguna Hills CA 92653 Ph 714 830-5162