4 WIDELY CONSIDERED effi cient single-engine fighter have come out World War II North American P-Si Mustang has become popu lar subjects Scale model airplane buildersand justifiably Escorting bombers way British bases targets deep Germany capable warbird instrumental gradually establish ing Allied air superiority over Luftwaffe Th6ugh P-5 1 Mustang has mod eled times both kit form scratch-built versions CL model pre sented being constructed primarily %-in corrugated cardboard unique corrugated cardboard construction greatly S reduces both building time cost de sign exploits specific properties card board allow used large sec tions folded wing example built two large pieces cardboard cardboard ribs single spar tail surfaces fuselage primarily cardboard little internal bracing result lowcost lightweight fast-building model nota bly scalelike appearance can take plenty punishment flying field Any A-in corrugated cardboard will project although material does vary weight Sources cardboard clude box manufacturers local shopping S p S centers can find stacks dis carded boxes Look cardboard brown paper side white fin ished paper other white paper outside model results smoother finish neater appearance model built scale 1% inches foot resulting wingspan 60 length 52 bottom air foil flat curved upper surface due scoring folding technique em ployed Engines 30 40 size can used Mustangs size stability make good CL sport flying model Construction hints Before begin lets Three views Debbie semiscale P-51B Mustang ready CL circle built scale 1% ft wa constructed mostly 1/8-in corrugated cardboard using scoring bending technique described text cardboard waterproofed clear polyurethane diluted 750/0 before construction airplane finished silver/blue paint scheme using two coats clear dope base three coats color Cardboard however can finished using wide variety materials because its smooth nonporous surface final product can see great-looking strongly built CL airplane can take Its share punishment flying field September 1989 65 review special tips working cardboard Glue Water-based glue such white glue Titebond recommended Contact empennage sections prior final sembly Theyre constructed laminating two pieces -in cardboard across grain create 1/4-in surfaces leading trailing edges finished n balsa strips per plans raw edges sealed gummed paper tape hinges made cloth strips left wing showing interior structure scored cardboard skin prior final sembly balsa spar capped spruce strip ribs skin 1R-in cardboard PLASTIC CANOPY PATTERN 61 61 1 1 SPINNERI/S B /4 BALSATRIAl f~TERIAFi/RC CARDBOARD UNLESS OTHER CI S SHAFT ST- CS ISS PROP ANK III II LA L~UTLINE /4 PLY cement recommended since pans can shifted gluing surfaces Folding scoring fold lines done screening tool thats available hardware store consists han dle 1 -in radius wheel end run along straightedge fold line Waterproofing cardboard quite sim 66 Model Aviation author proudly displaying cardboard masterpiece Its real eye-catcher yet ex tremely simple inexpensive fast building Its size stability make good sport flier Close-up main landing gear shows its simple arrangement using %2 wire bent shape attached nylon gear clips 1A-in ply insert wing model uses 3-in-dia tire wheel fair ing -in ply bolted gear wire dummy wheel well shape painted black close-up shows finished wing tip ready painting Note carved balsa tip -in plywood line guide place gummed paper tape sealing edges Full-Size Plans AvailableSee Page 180 THRO F EMFENNAUL IS 2 PIECES OF CARDBOARD h AAIMArFfl TOGETHER IAflAAIAA AIM I/S PLY i II IIII/AX 1/4 ISASA1/4 SQ IIIISPRUCE IVz e I3 BELLCRANK II IIIII IIIIll III IIIIIII IIIIII LEADOUT ATOP OMITTED FOR CLARITY WIRES v-S EFiAFD— tiO IFLEX 55 /4 BALSA-I _%~P4 CARDBOARDP3 FUXE1AXE1 INE 03F SAL A F2/551/4 SAL S A Fl C FF 04 -A F5 SB /5 PLY. j.- 3/32 DIAM WIRE THREAC BALSA ALL COUMEACIAL RIGHTS AESERVER C-C C FELTON SHEET OF 2 pie can applied raw material before cut out parts model Thoroughly mix 25% clear polyurethane 75% paint thinner latter can cheapest hardware store variety Brush mixture liberally onto cardboard sheet allow dry 48 hours adds no appreciable weight material renders cardboard completely water proof addition start cutting treated cardboard youll find its crisp wood divides sharply clean ly Finishing Cardboard nonporous gives solid surface no open areas cover easiest finishing method ap ply two coats clear dope sanding lightly between coats 400-grit sandpaper fol lowed three coats colored dope ever wide variety finishing materials Left cardboard right left fuselage sides shown ready assembly % x /4-Ifi balsa strips attached upper lower edges recessed % edges Right front partially finished fuselage showing fuel tank belicrank assembly place September 1989 67 CD ICIX-I I/B PLY IL V WHEELS DEAR C IFS TOP LANOING GEAR 5/22 WIRE 2 REQD may used cardboard Coverings such Solarfilm MonoKote vinyl paper can used its recom mended surface doped will result better bond Paper tape seams joints ex posed edges model covered strips gummed paper tape Obtain 1-inwide roll stationery store Simply cut thin strip length dip water smooth over seam Construction Cut out cardboard wood parts using template outlines sure note direction corruga tions Score fold cardboard parts dicated plans Empennage fin rudder stabilizer elevator made two pieces A-in cardboard laminated together across grain create A-in-thick surfac es Add x A-in balsa strip fin leading edge round off Add x A-in balsa strips stabilizer leading trailing edges round off Glue elevators A-in dowel Add /8 x A-in balsa strips remainder el evator leading edge again round off Seal raw edges gummed paper tape Hinge elevators stabilizer cloth strips four places Wing Make spar capping A-in balsa spar half x A-in spruce strip top bottom Join spar halves together A-in ply front rear centerline Glue A-in ply gear mount wing panel Glue right side wing spar onto righthand wing panel W9 Fit glue card board ribs place right wing Add cardboard doubler over ply gear mount between ribs W3 W4 Glue one-ounce weight right wing tip Glue left wing panel left spar similar fashion Add ribs gear dou bler left wing Apply glue top wing spar top ribs trailing edge wing Fold top wing surface down pin securely place until dry Add balsa tips wing Make line guide A-in ply Cut slot left wing balsa tip glue line guide place Cover trailing edge seams N,. I/B PLY JOINERS WI 1 1/4 BALSA V8 PLY W3 FLAP AND AILE NON OUTLINE CO W4 gummed paper tape Fuselage fuselage sides outlined triangular symbol drawing Apply x A-in balsa strips upper lower edges side recessed % edges shown fuselage side view Bevel strips aft end Left curved hood turtledeck under construction cardboard formers held place point single balsa stringer along centerline Right finished hood turtledeck cardboard carefully scored fit curve seams covered tape 68 Model Aviation bottom fuselage box section place Fuel tubing protruding firewall area Notice cardboard side supports ply belicrank mount spruce pushrod completed fuselage top section sure fuel tank tubing belicrank ply mount pushrod control wires properly installed before closing section Full-Size Plans AvailableSee Page 180 F2 Fl0 t F3 FG SPRUCE FOLD LINES ________________ I/8 PLY SPAR JOINER BALSA REQO TIP GUIDE KAIi LA WAW7WAWA W7 hIIII I/5 PLY LINE GUIDE I/RPLY SEAR AIDUNT 2 REDO F4 FR 03 \\~lII Ill/Il V DI C I liii W4 W3 ALL ArASWI WING SIRS 2 EACH AEQO SHEET 2 OF S P-51B MUSTANG DESIGNED B INKED BY C FELTON 0 2345A fuselage cardboard sides will come together Add cardboard supports fuselage side above fuel tank below bellcrank Make firewall Cl A-in ply Locate mounting holes KM-40 en gine mount face Cl Drill mounting holes install blind mounting nuts back side Cl Drill hole Cl fuel tubing exit Brace four back edges Cl -in triangular balsa Glue Cl right side fuselage dry glue left side fuselage Cl Attach fuel tank A-in ply support rubberbands Make pushrod %2-in-dia wire A-in-sq spruce attach belicrank along lead-out wires Install tank bellcrank assemblies gluing ply supports cardboard supports sides fuselage Glue sides together tail Glue Fl F2 place cover top fuselage sure bring fuel fill overflow tubing out during covering operations Cover bottom fuse lage gluing F3 F4 F5 F6 place Add bulkheads through H top fu selage adding /B x A-in stringers Cover bulkheads through D Dl has scored folded Cover bulkheads F E D2 Cover bulkheads E through H D3 Add three J bulkheads Continued page 167 Close-up tail wheel gear wire tached plywood base nylon thread business end Debbie engine 30 40 size range mounted upside down KM4O mount shaft extension must used achieve correct spinner clearance September 1989 69 Bill Booth architect mastermind 1989 business manager Bob Beecroft Lynn Martin new good friend Truman Puck ett Chef du Taft whole passel folks reminded act attitude Taft very special place roses really smell people Plan USFFC 1990 now Theres no telling itll cool 1989 certainly will groovy P-51 B/Felton Continued page 69 stringer forward bottom fuselage cover D4 Add balsa sheet piece bottom F5 rounding off edges shown view B-B Build up cowl -in balsa sheet shown top side views hollow out Glue A-in ply C2 piece front top half Glue C3 front end cowls removable bottom Sand carve hol low cowl shape Add 1-in ply pieces inside both top bottom halves cowl sides shown cowl top side views blind nut installed inside top cowl ply 4-40 bolt through bottom cowl ply form cowl attachment top half cowl permanently glued nose model Test fit engine cowl drill mount ing holes KM-40 mount Use shaft exten sion achieve adequate spinner clearance Cut holes cowl block cylinder head ex haust needle valve Glue stabilizer fuselage Add -in triangular balsa bottom stabilizer fuselage intersection bracing Glue fin fuselage Add scrap balsa bracing between fin stabilizer intersection round off shown view C-C Add rudder fin trailing edge offset ide flying circle Make tail wheel gear %rin-dia wire Bend gear shown position /-in ply support drill holes Attach gear nylon thread gluing liberally dry glue unit place bottom fuselage cut out Add scrap balsa wheel fairings Make main gear %2-in-dia wtre shown Make gear fairings A-in ply tach nylon gear clips Attach gear assem blies 1-in ply supports bottom wing nylon gear clips Finishing color scheme silver overall medium blue trim Make lettering signia MonoKote Make canopy thin plastic epoxy fuselage Outline canopy strips black MonoKote aileron flap outlines also made black MonoKote Final assembly Glue wing fuselage Make air scoop hollowed-out balsa block glue bottom wing Add balsa exhaust stacks both sides forward fuselage Pass lead-out wires through wing tip line guide tie off Attach nylon control horn elevator Hook up pushrod Attach 3-in-dia wheels main gear 1 -in -dia wheel tail gear tach 12 x 6 prop 3-in spinner en gine sure balance Mustang centerof-gravity shown plans Youre ready take flying field see yourself rugged lightweight plane Continued page 168 I U U P U p p I P U U P p U P U U Superior Igniters Improve starting idle acceleration Youll notice power bargain fuels Special Detergents Promote clean burning prevent residue buildup Rust Inhibitors Protect engines corrosion After run oil needed engines Film Strength Additives Increase lubricity provide extra lean run protection 1 E * 1* 1 P P U U P THE CHOICE OF CHAMPION FLYERS HFor over 20 years SIG has blending finest quality model engine fuel available using finest quality ingredients instance Methanol use 995% pure thevery best grade money can buy also use real 100% pure UNitromethane get full measure youve paid based honest percentage-of-volume method percentage weight SIG fuels con tain 50-50 blend Bakers purest AA Castor Oil Inew improved Klotz Techniplate Synthetic Racing Oil maximum engine lubrication protection Based experience sincerely believe finest quality fuel can made price dont take word try some judge UyourselfPrices s,5jee oSange withOOt nOtice See dealer first available order direct Call 800-247-5008 toll free orders Latest Catalog $300 SIG MANUFACTURING CO Montezuma IA 50171 .EEEEUEEEEEUUUE U I U U U P P P Anti-Wear Additives Help keep engines running peak performance longer Satisfaction Guaranteed FREE SHIPPING ON ORDERS OVER $1500 SIG CHAMPION 2-STROKE FUEL PINT QUART 0% Nitromthane 5% Nitromethane $365$525 10% Nitromethane $415$550 15% Nitromethane $430$635 25% Nitromethatie $5 15$795 35% Nitromethane $595 $925 SIG PREMIUM 4-STROKE 10% Nitromethane 15% Nitromethane GALLON $1075 $1275 $1475 $1675 $2195 $2695 FUEL $1425 $1625 I U U I i P U U U U U U U U U U U U U mE ERR Em EKE EU U U EU Far poap~ t Up ELZ UP 5helt8I Z UP1 BhSI~ futlV NO Iaa5 urdY 0strUG~ 006,turpOIS tubS, trP 0erN e aIrcraft partS NO rap05 tuabte miflur * full afl V8 Rod n OP sturdy feds~gNUYOfl 361 ~ Jo P Leisure rO Ltd v~973.517B September 1989 167 THE BEST FUSELAGE JIG EVER PERIOD Provides Solid Support Accurate Building Rugged Construction 7 Ply Aircraft Plywood Provides Ufetime Use Two Sizes Available Regular Fuselages Up 6/ Wide Jumbo Fuselages Up 9 Wide Use Own Building Board Work Bench Base Mount Jig Station Uni-Strut Guide Rails Most Versatile Set-Up Contains Complete Hardware Instructions Including Uni-Strut Information Boxof4StandardJigStations$1795 Boa 4 Jumbo Jig Stations1995 TwoS ft long Guide Rails including mounting nuts 2195 have comments suggestions questions concerning cardboard P-5 1 please write following address Chuck Fel ton 19009 Laurel Park Rd Space 86 Compton CA 90220 CL Aerobatics/Fancher Continued page 70 black using 1 -in-high Clarendon Bold type capitals name slanted 250 ward AMA number slanted 250 back ward Four working days later appliques arrived mail hour after plane ready clear coating Application simple sounds went out hitch looked magnificent Just see photo yourself Since pictures taken Ive clear-coated ship using K&B SuperPoxy absolutely no adverse affect numbers however plan doping over advised unless applied cautiously dope will cause letters curdle Clear dope must sprayed several very light dry coats prevent spray rig allows vary amount liquid use method apply mist coats using spray cans spray first several coats light fast about 18 away paint nearly dry hits letters After four five coats like nor mal coats may applied entire ship Just cautious load lettered area down wet dope may soften earlier coats cost $575 set about 15% $48 Letraset would have cost Try think youll like IVANS MAGIC GADGET protractor device used Ivan Kristensen accurately measure aileron elevator rudder throw Takes Jess work out trimming out airplane quality tool complete instructionslog book carrying case$795 PLUG-IN ADJUSTABLE STAB KIT last can optimize stab incidence best flight charac teristics pair glass filled nylon adjusters included provide micro screw adjustment smaller front tube Main tube aluminum matching phenolic socket 5695 Include $2 SO/Item UPS esidents Add 6% Sales Tax GATOR RIC PRODUCTS 3713 Pompano Dr acola FL 32514 476-8639 Speaking finishing lets talk bit about frustration suffered result finishing process new Temptation Im going talk about what Mike Keville referred F word letter subject other day What F-word ask Through tightly clenched teeth whisper fillets rable embarrassing area fuselage mates wings tails exotic sensu ous curved area everyone looks air plane likes caress search telltale blem ishes discover symptoms such ma lignancy like impale evil grin say pleasantly little trouble Fs didnt Little Did say little bit trouble Would call having Mt St Helens erupt backyard little bit trouble Would believe name Temptation came temptations considered having untimely demise inanimate timeand-money sponge Let tell about lit tle bit trouble pertains F-word number years have using Sig Epoxolite fillets Stunt ships exceptional product extremely strong reasonable weight can shaped nearly final dimensions finger dampened water before cures lot nice things say about Epoxolite takes well being covered paint word has written about need take extra precautions painting over Heres successfully cover fillet between two sur faces angles another im perative paint adhere aggressively fillet itself Because paints shrink age will tend pull away areas PLUG-IN WING ADJUSTER KIT Four glass filled nylon brackets included key wing panels front rear allow accurately adjust panel straight flight Complete hardware & instructions5995 WING TUBE & SOCKETS Aluminum alloy tubing plug-in wings Included pair special slip-fit phenolic sockets build wing structure Now size models 7/8diax2$ 895 1diax2S 995 1diax3S1495 poorly attached adjoining surfaces significant angles another paint adheres tightly fuselage wingbut filletit will leave flat bub bled areas has pulled away smoothly radiused fillet Because flat bub bles become reflecting surfaces ex tremely noticeable severely degrade ap pearance otherwise attractive airplane Because Stunt fliers historically use butyrate type dopes covering basic filler-coating because butyrate doesnt stick well Epoxo lite have devise ways get finish adhere has found both Aero Gloss nitrate clears will adhere Epoxolite much aggressively will butyrates Ex pert craftsmen will therefore apply two three coats former over bare Epoxolite prime subsequent finishing coats butyrate approach has proven generally suc cessful important remember Aero Gloss nitrate dopes must used top butyrate paints will lift butyrate Butyrate can applied top either however Well done using nitrate sealer proceeding all-dope finish entire ship painted white first rash developed Numerous bubbles appeared over upper fillets Dont ask bot toms still looked pretty good Attempts re adhere paint proved futile always finally gave up stripped paint away clear down Epoxolite Thinking perhaps hadnt allowed fil let cure properly decided insulate paint covering entire filleted areas fairly thick layer Model Magic Filler water-based material very light sands Continued page ifl MINI-ELECTRIC 168 Model Aviation MINI POWER AT ITS BEST LIGHT WEIGHT K CHARGE T MOTCRJPR HY-70VI-ill 7 1 gesr rest Ni Includes HY-7t B Wheeling 19 grams wi Connecler end Acces HY-lUB Same HY-71J Discennecle Slide HY7O HY70R INSTANTSTART OST L CL SISiOS ighI 8elleries itchy ReiiItes $3795 ny VL FhighI 8attitry VL Field box
Edition: Model Aviation - 1989/09
Page Numbers: 65, 66, 67, 68, 69, 167, 168
4 WIDELY CONSIDERED effi cient single-engine fighter have come out World War II North American P-Si Mustang has become popu lar subjects Scale model airplane buildersand justifiably Escorting bombers way British bases targets deep Germany capable warbird instrumental gradually establish ing Allied air superiority over Luftwaffe Th6ugh P-5 1 Mustang has mod eled times both kit form scratch-built versions CL model pre sented being constructed primarily %-in corrugated cardboard unique corrugated cardboard construction greatly S reduces both building time cost de sign exploits specific properties card board allow used large sec tions folded wing example built two large pieces cardboard cardboard ribs single spar tail surfaces fuselage primarily cardboard little internal bracing result lowcost lightweight fast-building model nota bly scalelike appearance can take plenty punishment flying field Any A-in corrugated cardboard will project although material does vary weight Sources cardboard clude box manufacturers local shopping S p S centers can find stacks dis carded boxes Look cardboard brown paper side white fin ished paper other white paper outside model results smoother finish neater appearance model built scale 1% inches foot resulting wingspan 60 length 52 bottom air foil flat curved upper surface due scoring folding technique em ployed Engines 30 40 size can used Mustangs size stability make good CL sport flying model Construction hints Before begin lets Three views Debbie semiscale P-51B Mustang ready CL circle built scale 1% ft wa constructed mostly 1/8-in corrugated cardboard using scoring bending technique described text cardboard waterproofed clear polyurethane diluted 750/0 before construction airplane finished silver/blue paint scheme using two coats clear dope base three coats color Cardboard however can finished using wide variety materials because its smooth nonporous surface final product can see great-looking strongly built CL airplane can take Its share punishment flying field September 1989 65 review special tips working cardboard Glue Water-based glue such white glue Titebond recommended Contact empennage sections prior final sembly Theyre constructed laminating two pieces -in cardboard across grain create 1/4-in surfaces leading trailing edges finished n balsa strips per plans raw edges sealed gummed paper tape hinges made cloth strips left wing showing interior structure scored cardboard skin prior final sembly balsa spar capped spruce strip ribs skin 1R-in cardboard PLASTIC CANOPY PATTERN 61 61 1 1 SPINNERI/S B /4 BALSATRIAl f~TERIAFi/RC CARDBOARD UNLESS OTHER CI S SHAFT ST- CS ISS PROP ANK III II LA L~UTLINE /4 PLY cement recommended since pans can shifted gluing surfaces Folding scoring fold lines done screening tool thats available hardware store consists han dle 1 -in radius wheel end run along straightedge fold line Waterproofing cardboard quite sim 66 Model Aviation author proudly displaying cardboard masterpiece Its real eye-catcher yet ex tremely simple inexpensive fast building Its size stability make good sport flier Close-up main landing gear shows its simple arrangement using %2 wire bent shape attached nylon gear clips 1A-in ply insert wing model uses 3-in-dia tire wheel fair ing -in ply bolted gear wire dummy wheel well shape painted black close-up shows finished wing tip ready painting Note carved balsa tip -in plywood line guide place gummed paper tape sealing edges Full-Size Plans AvailableSee Page 180 THRO F EMFENNAUL IS 2 PIECES OF CARDBOARD h AAIMArFfl TOGETHER IAflAAIAA AIM I/S PLY i II IIII/AX 1/4 ISASA1/4 SQ IIIISPRUCE IVz e I3 BELLCRANK II IIIII IIIIll III IIIIIII IIIIII LEADOUT ATOP OMITTED FOR CLARITY WIRES v-S EFiAFD— tiO IFLEX 55 /4 BALSA-I _%~P4 CARDBOARDP3 FUXE1AXE1 INE 03F SAL A F2/551/4 SAL S A Fl C FF 04 -A F5 SB /5 PLY. j.- 3/32 DIAM WIRE THREAC BALSA ALL COUMEACIAL RIGHTS AESERVER C-C C FELTON SHEET OF 2 pie can applied raw material before cut out parts model Thoroughly mix 25% clear polyurethane 75% paint thinner latter can cheapest hardware store variety Brush mixture liberally onto cardboard sheet allow dry 48 hours adds no appreciable weight material renders cardboard completely water proof addition start cutting treated cardboard youll find its crisp wood divides sharply clean ly Finishing Cardboard nonporous gives solid surface no open areas cover easiest finishing method ap ply two coats clear dope sanding lightly between coats 400-grit sandpaper fol lowed three coats colored dope ever wide variety finishing materials Left cardboard right left fuselage sides shown ready assembly % x /4-Ifi balsa strips attached upper lower edges recessed % edges Right front partially finished fuselage showing fuel tank belicrank assembly place September 1989 67 CD ICIX-I I/B PLY IL V WHEELS DEAR C IFS TOP LANOING GEAR 5/22 WIRE 2 REQD may used cardboard Coverings such Solarfilm MonoKote vinyl paper can used its recom mended surface doped will result better bond Paper tape seams joints ex posed edges model covered strips gummed paper tape Obtain 1-inwide roll stationery store Simply cut thin strip length dip water smooth over seam Construction Cut out cardboard wood parts using template outlines sure note direction corruga tions Score fold cardboard parts dicated plans Empennage fin rudder stabilizer elevator made two pieces A-in cardboard laminated together across grain create A-in-thick surfac es Add x A-in balsa strip fin leading edge round off Add x A-in balsa strips stabilizer leading trailing edges round off Glue elevators A-in dowel Add /8 x A-in balsa strips remainder el evator leading edge again round off Seal raw edges gummed paper tape Hinge elevators stabilizer cloth strips four places Wing Make spar capping A-in balsa spar half x A-in spruce strip top bottom Join spar halves together A-in ply front rear centerline Glue A-in ply gear mount wing panel Glue right side wing spar onto righthand wing panel W9 Fit glue card board ribs place right wing Add cardboard doubler over ply gear mount between ribs W3 W4 Glue one-ounce weight right wing tip Glue left wing panel left spar similar fashion Add ribs gear dou bler left wing Apply glue top wing spar top ribs trailing edge wing Fold top wing surface down pin securely place until dry Add balsa tips wing Make line guide A-in ply Cut slot left wing balsa tip glue line guide place Cover trailing edge seams N,. I/B PLY JOINERS WI 1 1/4 BALSA V8 PLY W3 FLAP AND AILE NON OUTLINE CO W4 gummed paper tape Fuselage fuselage sides outlined triangular symbol drawing Apply x A-in balsa strips upper lower edges side recessed % edges shown fuselage side view Bevel strips aft end Left curved hood turtledeck under construction cardboard formers held place point single balsa stringer along centerline Right finished hood turtledeck cardboard carefully scored fit curve seams covered tape 68 Model Aviation bottom fuselage box section place Fuel tubing protruding firewall area Notice cardboard side supports ply belicrank mount spruce pushrod completed fuselage top section sure fuel tank tubing belicrank ply mount pushrod control wires properly installed before closing section Full-Size Plans AvailableSee Page 180 F2 Fl0 t F3 FG SPRUCE FOLD LINES ________________ I/8 PLY SPAR JOINER BALSA REQO TIP GUIDE KAIi LA WAW7WAWA W7 hIIII I/5 PLY LINE GUIDE I/RPLY SEAR AIDUNT 2 REDO F4 FR 03 \\~lII Ill/Il V DI C I liii W4 W3 ALL ArASWI WING SIRS 2 EACH AEQO SHEET 2 OF S P-51B MUSTANG DESIGNED B INKED BY C FELTON 0 2345A fuselage cardboard sides will come together Add cardboard supports fuselage side above fuel tank below bellcrank Make firewall Cl A-in ply Locate mounting holes KM-40 en gine mount face Cl Drill mounting holes install blind mounting nuts back side Cl Drill hole Cl fuel tubing exit Brace four back edges Cl -in triangular balsa Glue Cl right side fuselage dry glue left side fuselage Cl Attach fuel tank A-in ply support rubberbands Make pushrod %2-in-dia wire A-in-sq spruce attach belicrank along lead-out wires Install tank bellcrank assemblies gluing ply supports cardboard supports sides fuselage Glue sides together tail Glue Fl F2 place cover top fuselage sure bring fuel fill overflow tubing out during covering operations Cover bottom fuse lage gluing F3 F4 F5 F6 place Add bulkheads through H top fu selage adding /B x A-in stringers Cover bulkheads through D Dl has scored folded Cover bulkheads F E D2 Cover bulkheads E through H D3 Add three J bulkheads Continued page 167 Close-up tail wheel gear wire tached plywood base nylon thread business end Debbie engine 30 40 size range mounted upside down KM4O mount shaft extension must used achieve correct spinner clearance September 1989 69 Bill Booth architect mastermind 1989 business manager Bob Beecroft Lynn Martin new good friend Truman Puck ett Chef du Taft whole passel folks reminded act attitude Taft very special place roses really smell people Plan USFFC 1990 now Theres no telling itll cool 1989 certainly will groovy P-51 B/Felton Continued page 69 stringer forward bottom fuselage cover D4 Add balsa sheet piece bottom F5 rounding off edges shown view B-B Build up cowl -in balsa sheet shown top side views hollow out Glue A-in ply C2 piece front top half Glue C3 front end cowls removable bottom Sand carve hol low cowl shape Add 1-in ply pieces inside both top bottom halves cowl sides shown cowl top side views blind nut installed inside top cowl ply 4-40 bolt through bottom cowl ply form cowl attachment top half cowl permanently glued nose model Test fit engine cowl drill mount ing holes KM-40 mount Use shaft exten sion achieve adequate spinner clearance Cut holes cowl block cylinder head ex haust needle valve Glue stabilizer fuselage Add -in triangular balsa bottom stabilizer fuselage intersection bracing Glue fin fuselage Add scrap balsa bracing between fin stabilizer intersection round off shown view C-C Add rudder fin trailing edge offset ide flying circle Make tail wheel gear %rin-dia wire Bend gear shown position /-in ply support drill holes Attach gear nylon thread gluing liberally dry glue unit place bottom fuselage cut out Add scrap balsa wheel fairings Make main gear %2-in-dia wtre shown Make gear fairings A-in ply tach nylon gear clips Attach gear assem blies 1-in ply supports bottom wing nylon gear clips Finishing color scheme silver overall medium blue trim Make lettering signia MonoKote Make canopy thin plastic epoxy fuselage Outline canopy strips black MonoKote aileron flap outlines also made black MonoKote Final assembly Glue wing fuselage Make air scoop hollowed-out balsa block glue bottom wing Add balsa exhaust stacks both sides forward fuselage Pass lead-out wires through wing tip line guide tie off Attach nylon control horn elevator Hook up pushrod Attach 3-in-dia wheels main gear 1 -in -dia wheel tail gear tach 12 x 6 prop 3-in spinner en gine sure balance Mustang centerof-gravity shown plans Youre ready take flying field see yourself rugged lightweight plane Continued page 168 I U U P U p p I P U U P p U P U U Superior Igniters Improve starting idle acceleration Youll notice power bargain fuels Special Detergents Promote clean burning prevent residue buildup Rust Inhibitors Protect engines corrosion After run oil needed engines Film Strength Additives Increase lubricity provide extra lean run protection 1 E * 1* 1 P P U U P THE CHOICE OF CHAMPION FLYERS HFor over 20 years SIG has blending finest quality model engine fuel available using finest quality ingredients instance Methanol use 995% pure thevery best grade money can buy also use real 100% pure UNitromethane get full measure youve paid based honest percentage-of-volume method percentage weight SIG fuels con tain 50-50 blend Bakers purest AA Castor Oil Inew improved Klotz Techniplate Synthetic Racing Oil maximum engine lubrication protection Based experience sincerely believe finest quality fuel can made price dont take word try some judge UyourselfPrices s,5jee oSange withOOt nOtice See dealer first available order direct Call 800-247-5008 toll free orders Latest Catalog $300 SIG MANUFACTURING CO Montezuma IA 50171 .EEEEUEEEEEUUUE U I U U U P P P Anti-Wear Additives Help keep engines running peak performance longer Satisfaction Guaranteed FREE SHIPPING ON ORDERS OVER $1500 SIG CHAMPION 2-STROKE FUEL PINT QUART 0% Nitromthane 5% Nitromethane $365$525 10% Nitromethane $415$550 15% Nitromethane $430$635 25% Nitromethatie $5 15$795 35% Nitromethane $595 $925 SIG PREMIUM 4-STROKE 10% Nitromethane 15% Nitromethane GALLON $1075 $1275 $1475 $1675 $2195 $2695 FUEL $1425 $1625 I U U I i P U U U U U U U U U U U U U mE ERR Em EKE EU U U EU Far poap~ t Up ELZ UP 5helt8I Z UP1 BhSI~ futlV NO Iaa5 urdY 0strUG~ 006,turpOIS tubS, trP 0erN e aIrcraft partS NO rap05 tuabte miflur * full afl V8 Rod n OP sturdy feds~gNUYOfl 361 ~ Jo P Leisure rO Ltd v~973.517B September 1989 167 THE BEST FUSELAGE JIG EVER PERIOD Provides Solid Support Accurate Building Rugged Construction 7 Ply Aircraft Plywood Provides Ufetime Use Two Sizes Available Regular Fuselages Up 6/ Wide Jumbo Fuselages Up 9 Wide Use Own Building Board Work Bench Base Mount Jig Station Uni-Strut Guide Rails Most Versatile Set-Up Contains Complete Hardware Instructions Including Uni-Strut Information Boxof4StandardJigStations$1795 Boa 4 Jumbo Jig Stations1995 TwoS ft long Guide Rails including mounting nuts 2195 have comments suggestions questions concerning cardboard P-5 1 please write following address Chuck Fel ton 19009 Laurel Park Rd Space 86 Compton CA 90220 CL Aerobatics/Fancher Continued page 70 black using 1 -in-high Clarendon Bold type capitals name slanted 250 ward AMA number slanted 250 back ward Four working days later appliques arrived mail hour after plane ready clear coating Application simple sounds went out hitch looked magnificent Just see photo yourself Since pictures taken Ive clear-coated ship using K&B SuperPoxy absolutely no adverse affect numbers however plan doping over advised unless applied cautiously dope will cause letters curdle Clear dope must sprayed several very light dry coats prevent spray rig allows vary amount liquid use method apply mist coats using spray cans spray first several coats light fast about 18 away paint nearly dry hits letters After four five coats like nor mal coats may applied entire ship Just cautious load lettered area down wet dope may soften earlier coats cost $575 set about 15% $48 Letraset would have cost Try think youll like IVANS MAGIC GADGET protractor device used Ivan Kristensen accurately measure aileron elevator rudder throw Takes Jess work out trimming out airplane quality tool complete instructionslog book carrying case$795 PLUG-IN ADJUSTABLE STAB KIT last can optimize stab incidence best flight charac teristics pair glass filled nylon adjusters included provide micro screw adjustment smaller front tube Main tube aluminum matching phenolic socket 5695 Include $2 SO/Item UPS esidents Add 6% Sales Tax GATOR RIC PRODUCTS 3713 Pompano Dr acola FL 32514 476-8639 Speaking finishing lets talk bit about frustration suffered result finishing process new Temptation Im going talk about what Mike Keville referred F word letter subject other day What F-word ask Through tightly clenched teeth whisper fillets rable embarrassing area fuselage mates wings tails exotic sensu ous curved area everyone looks air plane likes caress search telltale blem ishes discover symptoms such ma lignancy like impale evil grin say pleasantly little trouble Fs didnt Little Did say little bit trouble Would call having Mt St Helens erupt backyard little bit trouble Would believe name Temptation came temptations considered having untimely demise inanimate timeand-money sponge Let tell about lit tle bit trouble pertains F-word number years have using Sig Epoxolite fillets Stunt ships exceptional product extremely strong reasonable weight can shaped nearly final dimensions finger dampened water before cures lot nice things say about Epoxolite takes well being covered paint word has written about need take extra precautions painting over Heres successfully cover fillet between two sur faces angles another im perative paint adhere aggressively fillet itself Because paints shrink age will tend pull away areas PLUG-IN WING ADJUSTER KIT Four glass filled nylon brackets included key wing panels front rear allow accurately adjust panel straight flight Complete hardware & instructions5995 WING TUBE & SOCKETS Aluminum alloy tubing plug-in wings Included pair special slip-fit phenolic sockets build wing structure Now size models 7/8diax2$ 895 1diax2S 995 1diax3S1495 poorly attached adjoining surfaces significant angles another paint adheres tightly fuselage wingbut filletit will leave flat bub bled areas has pulled away smoothly radiused fillet Because flat bub bles become reflecting surfaces ex tremely noticeable severely degrade ap pearance otherwise attractive airplane Because Stunt fliers historically use butyrate type dopes covering basic filler-coating because butyrate doesnt stick well Epoxo lite have devise ways get finish adhere has found both Aero Gloss nitrate clears will adhere Epoxolite much aggressively will butyrates Ex pert craftsmen will therefore apply two three coats former over bare Epoxolite prime subsequent finishing coats butyrate approach has proven generally suc cessful important remember Aero Gloss nitrate dopes must used top butyrate paints will lift butyrate Butyrate can applied top either however Well done using nitrate sealer proceeding all-dope finish entire ship painted white first rash developed Numerous bubbles appeared over upper fillets Dont ask bot toms still looked pretty good Attempts re adhere paint proved futile always finally gave up stripped paint away clear down Epoxolite Thinking perhaps hadnt allowed fil let cure properly decided insulate paint covering entire filleted areas fairly thick layer Model Magic Filler water-based material very light sands Continued page ifl MINI-ELECTRIC 168 Model Aviation MINI POWER AT ITS BEST LIGHT WEIGHT K CHARGE T MOTCRJPR HY-70VI-ill 7 1 gesr rest Ni Includes HY-7t B Wheeling 19 grams wi Connecler end Acces HY-lUB Same HY-71J Discennecle Slide HY7O HY70R INSTANTSTART OST L CL SISiOS ighI 8elleries itchy ReiiItes $3795 ny VL FhighI 8attitry VL Field box
Edition: Model Aviation - 1989/09
Page Numbers: 65, 66, 67, 68, 69, 167, 168
4 WIDELY CONSIDERED effi cient single-engine fighter have come out World War II North American P-Si Mustang has become popu lar subjects Scale model airplane buildersand justifiably Escorting bombers way British bases targets deep Germany capable warbird instrumental gradually establish ing Allied air superiority over Luftwaffe Th6ugh P-5 1 Mustang has mod eled times both kit form scratch-built versions CL model pre sented being constructed primarily %-in corrugated cardboard unique corrugated cardboard construction greatly S reduces both building time cost de sign exploits specific properties card board allow used large sec tions folded wing example built two large pieces cardboard cardboard ribs single spar tail surfaces fuselage primarily cardboard little internal bracing result lowcost lightweight fast-building model nota bly scalelike appearance can take plenty punishment flying field Any A-in corrugated cardboard will project although material does vary weight Sources cardboard clude box manufacturers local shopping S p S centers can find stacks dis carded boxes Look cardboard brown paper side white fin ished paper other white paper outside model results smoother finish neater appearance model built scale 1% inches foot resulting wingspan 60 length 52 bottom air foil flat curved upper surface due scoring folding technique em ployed Engines 30 40 size can used Mustangs size stability make good CL sport flying model Construction hints Before begin lets Three views Debbie semiscale P-51B Mustang ready CL circle built scale 1% ft wa constructed mostly 1/8-in corrugated cardboard using scoring bending technique described text cardboard waterproofed clear polyurethane diluted 750/0 before construction airplane finished silver/blue paint scheme using two coats clear dope base three coats color Cardboard however can finished using wide variety materials because its smooth nonporous surface final product can see great-looking strongly built CL airplane can take Its share punishment flying field September 1989 65 review special tips working cardboard Glue Water-based glue such white glue Titebond recommended Contact empennage sections prior final sembly Theyre constructed laminating two pieces -in cardboard across grain create 1/4-in surfaces leading trailing edges finished n balsa strips per plans raw edges sealed gummed paper tape hinges made cloth strips left wing showing interior structure scored cardboard skin prior final sembly balsa spar capped spruce strip ribs skin 1R-in cardboard PLASTIC CANOPY PATTERN 61 61 1 1 SPINNERI/S B /4 BALSATRIAl f~TERIAFi/RC CARDBOARD UNLESS OTHER CI S SHAFT ST- CS ISS PROP ANK III II LA L~UTLINE /4 PLY cement recommended since pans can shifted gluing surfaces Folding scoring fold lines done screening tool thats available hardware store consists han dle 1 -in radius wheel end run along straightedge fold line Waterproofing cardboard quite sim 66 Model Aviation author proudly displaying cardboard masterpiece Its real eye-catcher yet ex tremely simple inexpensive fast building Its size stability make good sport flier Close-up main landing gear shows its simple arrangement using %2 wire bent shape attached nylon gear clips 1A-in ply insert wing model uses 3-in-dia tire wheel fair ing -in ply bolted gear wire dummy wheel well shape painted black close-up shows finished wing tip ready painting Note carved balsa tip -in plywood line guide place gummed paper tape sealing edges Full-Size Plans AvailableSee Page 180 THRO F EMFENNAUL IS 2 PIECES OF CARDBOARD h AAIMArFfl TOGETHER IAflAAIAA AIM I/S PLY i II IIII/AX 1/4 ISASA1/4 SQ IIIISPRUCE IVz e I3 BELLCRANK II IIIII IIIIll III IIIIIII IIIIII LEADOUT ATOP OMITTED FOR CLARITY WIRES v-S EFiAFD— tiO IFLEX 55 /4 BALSA-I _%~P4 CARDBOARDP3 FUXE1AXE1 INE 03F SAL A F2/551/4 SAL S A Fl C FF 04 -A F5 SB /5 PLY. j.- 3/32 DIAM WIRE THREAC BALSA ALL COUMEACIAL RIGHTS AESERVER C-C C FELTON SHEET OF 2 pie can applied raw material before cut out parts model Thoroughly mix 25% clear polyurethane 75% paint thinner latter can cheapest hardware store variety Brush mixture liberally onto cardboard sheet allow dry 48 hours adds no appreciable weight material renders cardboard completely water proof addition start cutting treated cardboard youll find its crisp wood divides sharply clean ly Finishing Cardboard nonporous gives solid surface no open areas cover easiest finishing method ap ply two coats clear dope sanding lightly between coats 400-grit sandpaper fol lowed three coats colored dope ever wide variety finishing materials Left cardboard right left fuselage sides shown ready assembly % x /4-Ifi balsa strips attached upper lower edges recessed % edges Right front partially finished fuselage showing fuel tank belicrank assembly place September 1989 67 CD ICIX-I I/B PLY IL V WHEELS DEAR C IFS TOP LANOING GEAR 5/22 WIRE 2 REQD may used cardboard Coverings such Solarfilm MonoKote vinyl paper can used its recom mended surface doped will result better bond Paper tape seams joints ex posed edges model covered strips gummed paper tape Obtain 1-inwide roll stationery store Simply cut thin strip length dip water smooth over seam Construction Cut out cardboard wood parts using template outlines sure note direction corruga tions Score fold cardboard parts dicated plans Empennage fin rudder stabilizer elevator made two pieces A-in cardboard laminated together across grain create A-in-thick surfac es Add x A-in balsa strip fin leading edge round off Add x A-in balsa strips stabilizer leading trailing edges round off Glue elevators A-in dowel Add /8 x A-in balsa strips remainder el evator leading edge again round off Seal raw edges gummed paper tape Hinge elevators stabilizer cloth strips four places Wing Make spar capping A-in balsa spar half x A-in spruce strip top bottom Join spar halves together A-in ply front rear centerline Glue A-in ply gear mount wing panel Glue right side wing spar onto righthand wing panel W9 Fit glue card board ribs place right wing Add cardboard doubler over ply gear mount between ribs W3 W4 Glue one-ounce weight right wing tip Glue left wing panel left spar similar fashion Add ribs gear dou bler left wing Apply glue top wing spar top ribs trailing edge wing Fold top wing surface down pin securely place until dry Add balsa tips wing Make line guide A-in ply Cut slot left wing balsa tip glue line guide place Cover trailing edge seams N,. I/B PLY JOINERS WI 1 1/4 BALSA V8 PLY W3 FLAP AND AILE NON OUTLINE CO W4 gummed paper tape Fuselage fuselage sides outlined triangular symbol drawing Apply x A-in balsa strips upper lower edges side recessed % edges shown fuselage side view Bevel strips aft end Left curved hood turtledeck under construction cardboard formers held place point single balsa stringer along centerline Right finished hood turtledeck cardboard carefully scored fit curve seams covered tape 68 Model Aviation bottom fuselage box section place Fuel tubing protruding firewall area Notice cardboard side supports ply belicrank mount spruce pushrod completed fuselage top section sure fuel tank tubing belicrank ply mount pushrod control wires properly installed before closing section Full-Size Plans AvailableSee Page 180 F2 Fl0 t F3 FG SPRUCE FOLD LINES ________________ I/8 PLY SPAR JOINER BALSA REQO TIP GUIDE KAIi LA WAW7WAWA W7 hIIII I/5 PLY LINE GUIDE I/RPLY SEAR AIDUNT 2 REDO F4 FR 03 \\~lII Ill/Il V DI C I liii W4 W3 ALL ArASWI WING SIRS 2 EACH AEQO SHEET 2 OF S P-51B MUSTANG DESIGNED B INKED BY C FELTON 0 2345A fuselage cardboard sides will come together Add cardboard supports fuselage side above fuel tank below bellcrank Make firewall Cl A-in ply Locate mounting holes KM-40 en gine mount face Cl Drill mounting holes install blind mounting nuts back side Cl Drill hole Cl fuel tubing exit Brace four back edges Cl -in triangular balsa Glue Cl right side fuselage dry glue left side fuselage Cl Attach fuel tank A-in ply support rubberbands Make pushrod %2-in-dia wire A-in-sq spruce attach belicrank along lead-out wires Install tank bellcrank assemblies gluing ply supports cardboard supports sides fuselage Glue sides together tail Glue Fl F2 place cover top fuselage sure bring fuel fill overflow tubing out during covering operations Cover bottom fuse lage gluing F3 F4 F5 F6 place Add bulkheads through H top fu selage adding /B x A-in stringers Cover bulkheads through D Dl has scored folded Cover bulkheads F E D2 Cover bulkheads E through H D3 Add three J bulkheads Continued page 167 Close-up tail wheel gear wire tached plywood base nylon thread business end Debbie engine 30 40 size range mounted upside down KM4O mount shaft extension must used achieve correct spinner clearance September 1989 69 Bill Booth architect mastermind 1989 business manager Bob Beecroft Lynn Martin new good friend Truman Puck ett Chef du Taft whole passel folks reminded act attitude Taft very special place roses really smell people Plan USFFC 1990 now Theres no telling itll cool 1989 certainly will groovy P-51 B/Felton Continued page 69 stringer forward bottom fuselage cover D4 Add balsa sheet piece bottom F5 rounding off edges shown view B-B Build up cowl -in balsa sheet shown top side views hollow out Glue A-in ply C2 piece front top half Glue C3 front end cowls removable bottom Sand carve hol low cowl shape Add 1-in ply pieces inside both top bottom halves cowl sides shown cowl top side views blind nut installed inside top cowl ply 4-40 bolt through bottom cowl ply form cowl attachment top half cowl permanently glued nose model Test fit engine cowl drill mount ing holes KM-40 mount Use shaft exten sion achieve adequate spinner clearance Cut holes cowl block cylinder head ex haust needle valve Glue stabilizer fuselage Add -in triangular balsa bottom stabilizer fuselage intersection bracing Glue fin fuselage Add scrap balsa bracing between fin stabilizer intersection round off shown view C-C Add rudder fin trailing edge offset ide flying circle Make tail wheel gear %rin-dia wire Bend gear shown position /-in ply support drill holes Attach gear nylon thread gluing liberally dry glue unit place bottom fuselage cut out Add scrap balsa wheel fairings Make main gear %2-in-dia wtre shown Make gear fairings A-in ply tach nylon gear clips Attach gear assem blies 1-in ply supports bottom wing nylon gear clips Finishing color scheme silver overall medium blue trim Make lettering signia MonoKote Make canopy thin plastic epoxy fuselage Outline canopy strips black MonoKote aileron flap outlines also made black MonoKote Final assembly Glue wing fuselage Make air scoop hollowed-out balsa block glue bottom wing Add balsa exhaust stacks both sides forward fuselage Pass lead-out wires through wing tip line guide tie off Attach nylon control horn elevator Hook up pushrod Attach 3-in-dia wheels main gear 1 -in -dia wheel tail gear tach 12 x 6 prop 3-in spinner en gine sure balance Mustang centerof-gravity shown plans Youre ready take flying field see yourself rugged lightweight plane Continued page 168 I U U P U p p I P U U P p U P U U Superior Igniters Improve starting idle acceleration Youll notice power bargain fuels Special Detergents Promote clean burning prevent residue buildup Rust Inhibitors Protect engines corrosion After run oil needed engines Film Strength Additives Increase lubricity provide extra lean run protection 1 E * 1* 1 P P U U P THE CHOICE OF CHAMPION FLYERS HFor over 20 years SIG has blending finest quality model engine fuel available using finest quality ingredients instance Methanol use 995% pure thevery best grade money can buy also use real 100% pure UNitromethane get full measure youve paid based honest percentage-of-volume method percentage weight SIG fuels con tain 50-50 blend Bakers purest AA Castor Oil Inew improved Klotz Techniplate Synthetic Racing Oil maximum engine lubrication protection Based experience sincerely believe finest quality fuel can made price dont take word try some judge UyourselfPrices s,5jee oSange withOOt nOtice See dealer first available order direct Call 800-247-5008 toll free orders Latest Catalog $300 SIG MANUFACTURING CO Montezuma IA 50171 .EEEEUEEEEEUUUE U I U U U P P P Anti-Wear Additives Help keep engines running peak performance longer Satisfaction Guaranteed FREE SHIPPING ON ORDERS OVER $1500 SIG CHAMPION 2-STROKE FUEL PINT QUART 0% Nitromthane 5% Nitromethane $365$525 10% Nitromethane $415$550 15% Nitromethane $430$635 25% Nitromethatie $5 15$795 35% Nitromethane $595 $925 SIG PREMIUM 4-STROKE 10% Nitromethane 15% Nitromethane GALLON $1075 $1275 $1475 $1675 $2195 $2695 FUEL $1425 $1625 I U U I i P U U U U U U U U U U U U U mE ERR Em EKE EU U U EU Far poap~ t Up ELZ UP 5helt8I Z UP1 BhSI~ futlV NO Iaa5 urdY 0strUG~ 006,turpOIS tubS, trP 0erN e aIrcraft partS NO rap05 tuabte miflur * full afl V8 Rod n OP sturdy feds~gNUYOfl 361 ~ Jo P Leisure rO Ltd v~973.517B September 1989 167 THE BEST FUSELAGE JIG EVER PERIOD Provides Solid Support Accurate Building Rugged Construction 7 Ply Aircraft Plywood Provides Ufetime Use Two Sizes Available Regular Fuselages Up 6/ Wide Jumbo Fuselages Up 9 Wide Use Own Building Board Work Bench Base Mount Jig Station Uni-Strut Guide Rails Most Versatile Set-Up Contains Complete Hardware Instructions Including Uni-Strut Information Boxof4StandardJigStations$1795 Boa 4 Jumbo Jig Stations1995 TwoS ft long Guide Rails including mounting nuts 2195 have comments suggestions questions concerning cardboard P-5 1 please write following address Chuck Fel ton 19009 Laurel Park Rd Space 86 Compton CA 90220 CL Aerobatics/Fancher Continued page 70 black using 1 -in-high Clarendon Bold type capitals name slanted 250 ward AMA number slanted 250 back ward Four working days later appliques arrived mail hour after plane ready clear coating Application simple sounds went out hitch looked magnificent Just see photo yourself Since pictures taken Ive clear-coated ship using K&B SuperPoxy absolutely no adverse affect numbers however plan doping over advised unless applied cautiously dope will cause letters curdle Clear dope must sprayed several very light dry coats prevent spray rig allows vary amount liquid use method apply mist coats using spray cans spray first several coats light fast about 18 away paint nearly dry hits letters After four five coats like nor mal coats may applied entire ship Just cautious load lettered area down wet dope may soften earlier coats cost $575 set about 15% $48 Letraset would have cost Try think youll like IVANS MAGIC GADGET protractor device used Ivan Kristensen accurately measure aileron elevator rudder throw Takes Jess work out trimming out airplane quality tool complete instructionslog book carrying case$795 PLUG-IN ADJUSTABLE STAB KIT last can optimize stab incidence best flight charac teristics pair glass filled nylon adjusters included provide micro screw adjustment smaller front tube Main tube aluminum matching phenolic socket 5695 Include $2 SO/Item UPS esidents Add 6% Sales Tax GATOR RIC PRODUCTS 3713 Pompano Dr acola FL 32514 476-8639 Speaking finishing lets talk bit about frustration suffered result finishing process new Temptation Im going talk about what Mike Keville referred F word letter subject other day What F-word ask Through tightly clenched teeth whisper fillets rable embarrassing area fuselage mates wings tails exotic sensu ous curved area everyone looks air plane likes caress search telltale blem ishes discover symptoms such ma lignancy like impale evil grin say pleasantly little trouble Fs didnt Little Did say little bit trouble Would call having Mt St Helens erupt backyard little bit trouble Would believe name Temptation came temptations considered having untimely demise inanimate timeand-money sponge Let tell about lit tle bit trouble pertains F-word number years have using Sig Epoxolite fillets Stunt ships exceptional product extremely strong reasonable weight can shaped nearly final dimensions finger dampened water before cures lot nice things say about Epoxolite takes well being covered paint word has written about need take extra precautions painting over Heres successfully cover fillet between two sur faces angles another im perative paint adhere aggressively fillet itself Because paints shrink age will tend pull away areas PLUG-IN WING ADJUSTER KIT Four glass filled nylon brackets included key wing panels front rear allow accurately adjust panel straight flight Complete hardware & instructions5995 WING TUBE & SOCKETS Aluminum alloy tubing plug-in wings Included pair special slip-fit phenolic sockets build wing structure Now size models 7/8diax2$ 895 1diax2S 995 1diax3S1495 poorly attached adjoining surfaces significant angles another paint adheres tightly fuselage wingbut filletit will leave flat bub bled areas has pulled away smoothly radiused fillet Because flat bub bles become reflecting surfaces ex tremely noticeable severely degrade ap pearance otherwise attractive airplane Because Stunt fliers historically use butyrate type dopes covering basic filler-coating because butyrate doesnt stick well Epoxo lite have devise ways get finish adhere has found both Aero Gloss nitrate clears will adhere Epoxolite much aggressively will butyrates Ex pert craftsmen will therefore apply two three coats former over bare Epoxolite prime subsequent finishing coats butyrate approach has proven generally suc cessful important remember Aero Gloss nitrate dopes must used top butyrate paints will lift butyrate Butyrate can applied top either however Well done using nitrate sealer proceeding all-dope finish entire ship painted white first rash developed Numerous bubbles appeared over upper fillets Dont ask bot toms still looked pretty good Attempts re adhere paint proved futile always finally gave up stripped paint away clear down Epoxolite Thinking perhaps hadnt allowed fil let cure properly decided insulate paint covering entire filleted areas fairly thick layer Model Magic Filler water-based material very light sands Continued page ifl MINI-ELECTRIC 168 Model Aviation MINI POWER AT ITS BEST LIGHT WEIGHT K CHARGE T MOTCRJPR HY-70VI-ill 7 1 gesr rest Ni Includes HY-7t B Wheeling 19 grams wi Connecler end Acces HY-lUB Same HY-71J Discennecle Slide HY7O HY70R INSTANTSTART OST L CL SISiOS ighI 8elleries itchy ReiiItes $3795 ny VL FhighI 8attitry VL Field box
Edition: Model Aviation - 1989/09
Page Numbers: 65, 66, 67, 68, 69, 167, 168
4 WIDELY CONSIDERED effi cient single-engine fighter have come out World War II North American P-Si Mustang has become popu lar subjects Scale model airplane buildersand justifiably Escorting bombers way British bases targets deep Germany capable warbird instrumental gradually establish ing Allied air superiority over Luftwaffe Th6ugh P-5 1 Mustang has mod eled times both kit form scratch-built versions CL model pre sented being constructed primarily %-in corrugated cardboard unique corrugated cardboard construction greatly S reduces both building time cost de sign exploits specific properties card board allow used large sec tions folded wing example built two large pieces cardboard cardboard ribs single spar tail surfaces fuselage primarily cardboard little internal bracing result lowcost lightweight fast-building model nota bly scalelike appearance can take plenty punishment flying field Any A-in corrugated cardboard will project although material does vary weight Sources cardboard clude box manufacturers local shopping S p S centers can find stacks dis carded boxes Look cardboard brown paper side white fin ished paper other white paper outside model results smoother finish neater appearance model built scale 1% inches foot resulting wingspan 60 length 52 bottom air foil flat curved upper surface due scoring folding technique em ployed Engines 30 40 size can used Mustangs size stability make good CL sport flying model Construction hints Before begin lets Three views Debbie semiscale P-51B Mustang ready CL circle built scale 1% ft wa constructed mostly 1/8-in corrugated cardboard using scoring bending technique described text cardboard waterproofed clear polyurethane diluted 750/0 before construction airplane finished silver/blue paint scheme using two coats clear dope base three coats color Cardboard however can finished using wide variety materials because its smooth nonporous surface final product can see great-looking strongly built CL airplane can take Its share punishment flying field September 1989 65 review special tips working cardboard Glue Water-based glue such white glue Titebond recommended Contact empennage sections prior final sembly Theyre constructed laminating two pieces -in cardboard across grain create 1/4-in surfaces leading trailing edges finished n balsa strips per plans raw edges sealed gummed paper tape hinges made cloth strips left wing showing interior structure scored cardboard skin prior final sembly balsa spar capped spruce strip ribs skin 1R-in cardboard PLASTIC CANOPY PATTERN 61 61 1 1 SPINNERI/S B /4 BALSATRIAl f~TERIAFi/RC CARDBOARD UNLESS OTHER CI S SHAFT ST- CS ISS PROP ANK III II LA L~UTLINE /4 PLY cement recommended since pans can shifted gluing surfaces Folding scoring fold lines done screening tool thats available hardware store consists han dle 1 -in radius wheel end run along straightedge fold line Waterproofing cardboard quite sim 66 Model Aviation author proudly displaying cardboard masterpiece Its real eye-catcher yet ex tremely simple inexpensive fast building Its size stability make good sport flier Close-up main landing gear shows its simple arrangement using %2 wire bent shape attached nylon gear clips 1A-in ply insert wing model uses 3-in-dia tire wheel fair ing -in ply bolted gear wire dummy wheel well shape painted black close-up shows finished wing tip ready painting Note carved balsa tip -in plywood line guide place gummed paper tape sealing edges Full-Size Plans AvailableSee Page 180 THRO F EMFENNAUL IS 2 PIECES OF CARDBOARD h AAIMArFfl TOGETHER IAflAAIAA AIM I/S PLY i II IIII/AX 1/4 ISASA1/4 SQ IIIISPRUCE IVz e I3 BELLCRANK II IIIII IIIIll III IIIIIII IIIIII LEADOUT ATOP OMITTED FOR CLARITY WIRES v-S EFiAFD— tiO IFLEX 55 /4 BALSA-I _%~P4 CARDBOARDP3 FUXE1AXE1 INE 03F SAL A F2/551/4 SAL S A Fl C FF 04 -A F5 SB /5 PLY. j.- 3/32 DIAM WIRE THREAC BALSA ALL COUMEACIAL RIGHTS AESERVER C-C C FELTON SHEET OF 2 pie can applied raw material before cut out parts model Thoroughly mix 25% clear polyurethane 75% paint thinner latter can cheapest hardware store variety Brush mixture liberally onto cardboard sheet allow dry 48 hours adds no appreciable weight material renders cardboard completely water proof addition start cutting treated cardboard youll find its crisp wood divides sharply clean ly Finishing Cardboard nonporous gives solid surface no open areas cover easiest finishing method ap ply two coats clear dope sanding lightly between coats 400-grit sandpaper fol lowed three coats colored dope ever wide variety finishing materials Left cardboard right left fuselage sides shown ready assembly % x /4-Ifi balsa strips attached upper lower edges recessed % edges Right front partially finished fuselage showing fuel tank belicrank assembly place September 1989 67 CD ICIX-I I/B PLY IL V WHEELS DEAR C IFS TOP LANOING GEAR 5/22 WIRE 2 REQD may used cardboard Coverings such Solarfilm MonoKote vinyl paper can used its recom mended surface doped will result better bond Paper tape seams joints ex posed edges model covered strips gummed paper tape Obtain 1-inwide roll stationery store Simply cut thin strip length dip water smooth over seam Construction Cut out cardboard wood parts using template outlines sure note direction corruga tions Score fold cardboard parts dicated plans Empennage fin rudder stabilizer elevator made two pieces A-in cardboard laminated together across grain create A-in-thick surfac es Add x A-in balsa strip fin leading edge round off Add x A-in balsa strips stabilizer leading trailing edges round off Glue elevators A-in dowel Add /8 x A-in balsa strips remainder el evator leading edge again round off Seal raw edges gummed paper tape Hinge elevators stabilizer cloth strips four places Wing Make spar capping A-in balsa spar half x A-in spruce strip top bottom Join spar halves together A-in ply front rear centerline Glue A-in ply gear mount wing panel Glue right side wing spar onto righthand wing panel W9 Fit glue card board ribs place right wing Add cardboard doubler over ply gear mount between ribs W3 W4 Glue one-ounce weight right wing tip Glue left wing panel left spar similar fashion Add ribs gear dou bler left wing Apply glue top wing spar top ribs trailing edge wing Fold top wing surface down pin securely place until dry Add balsa tips wing Make line guide A-in ply Cut slot left wing balsa tip glue line guide place Cover trailing edge seams N,. I/B PLY JOINERS WI 1 1/4 BALSA V8 PLY W3 FLAP AND AILE NON OUTLINE CO W4 gummed paper tape Fuselage fuselage sides outlined triangular symbol drawing Apply x A-in balsa strips upper lower edges side recessed % edges shown fuselage side view Bevel strips aft end Left curved hood turtledeck under construction cardboard formers held place point single balsa stringer along centerline Right finished hood turtledeck cardboard carefully scored fit curve seams covered tape 68 Model Aviation bottom fuselage box section place Fuel tubing protruding firewall area Notice cardboard side supports ply belicrank mount spruce pushrod completed fuselage top section sure fuel tank tubing belicrank ply mount pushrod control wires properly installed before closing section Full-Size Plans AvailableSee Page 180 F2 Fl0 t F3 FG SPRUCE FOLD LINES ________________ I/8 PLY SPAR JOINER BALSA REQO TIP GUIDE KAIi LA WAW7WAWA W7 hIIII I/5 PLY LINE GUIDE I/RPLY SEAR AIDUNT 2 REDO F4 FR 03 \\~lII Ill/Il V DI C I liii W4 W3 ALL ArASWI WING SIRS 2 EACH AEQO SHEET 2 OF S P-51B MUSTANG DESIGNED B INKED BY C FELTON 0 2345A fuselage cardboard sides will come together Add cardboard supports fuselage side above fuel tank below bellcrank Make firewall Cl A-in ply Locate mounting holes KM-40 en gine mount face Cl Drill mounting holes install blind mounting nuts back side Cl Drill hole Cl fuel tubing exit Brace four back edges Cl -in triangular balsa Glue Cl right side fuselage dry glue left side fuselage Cl Attach fuel tank A-in ply support rubberbands Make pushrod %2-in-dia wire A-in-sq spruce attach belicrank along lead-out wires Install tank bellcrank assemblies gluing ply supports cardboard supports sides fuselage Glue sides together tail Glue Fl F2 place cover top fuselage sure bring fuel fill overflow tubing out during covering operations Cover bottom fuse lage gluing F3 F4 F5 F6 place Add bulkheads through H top fu selage adding /B x A-in stringers Cover bulkheads through D Dl has scored folded Cover bulkheads F E D2 Cover bulkheads E through H D3 Add three J bulkheads Continued page 167 Close-up tail wheel gear wire tached plywood base nylon thread business end Debbie engine 30 40 size range mounted upside down KM4O mount shaft extension must used achieve correct spinner clearance September 1989 69 Bill Booth architect mastermind 1989 business manager Bob Beecroft Lynn Martin new good friend Truman Puck ett Chef du Taft whole passel folks reminded act attitude Taft very special place roses really smell people Plan USFFC 1990 now Theres no telling itll cool 1989 certainly will groovy P-51 B/Felton Continued page 69 stringer forward bottom fuselage cover D4 Add balsa sheet piece bottom F5 rounding off edges shown view B-B Build up cowl -in balsa sheet shown top side views hollow out Glue A-in ply C2 piece front top half Glue C3 front end cowls removable bottom Sand carve hol low cowl shape Add 1-in ply pieces inside both top bottom halves cowl sides shown cowl top side views blind nut installed inside top cowl ply 4-40 bolt through bottom cowl ply form cowl attachment top half cowl permanently glued nose model Test fit engine cowl drill mount ing holes KM-40 mount Use shaft exten sion achieve adequate spinner clearance Cut holes cowl block cylinder head ex haust needle valve Glue stabilizer fuselage Add -in triangular balsa bottom stabilizer fuselage intersection bracing Glue fin fuselage Add scrap balsa bracing between fin stabilizer intersection round off shown view C-C Add rudder fin trailing edge offset ide flying circle Make tail wheel gear %rin-dia wire Bend gear shown position /-in ply support drill holes Attach gear nylon thread gluing liberally dry glue unit place bottom fuselage cut out Add scrap balsa wheel fairings Make main gear %2-in-dia wtre shown Make gear fairings A-in ply tach nylon gear clips Attach gear assem blies 1-in ply supports bottom wing nylon gear clips Finishing color scheme silver overall medium blue trim Make lettering signia MonoKote Make canopy thin plastic epoxy fuselage Outline canopy strips black MonoKote aileron flap outlines also made black MonoKote Final assembly Glue wing fuselage Make air scoop hollowed-out balsa block glue bottom wing Add balsa exhaust stacks both sides forward fuselage Pass lead-out wires through wing tip line guide tie off Attach nylon control horn elevator Hook up pushrod Attach 3-in-dia wheels main gear 1 -in -dia wheel tail gear tach 12 x 6 prop 3-in spinner en gine sure balance Mustang centerof-gravity shown plans Youre ready take flying field see yourself rugged lightweight plane Continued page 168 I U U P U p p I P U U P p U P U U Superior Igniters Improve starting idle acceleration Youll notice power bargain fuels Special Detergents Promote clean burning prevent residue buildup Rust Inhibitors Protect engines corrosion After run oil needed engines Film Strength Additives Increase lubricity provide extra lean run protection 1 E * 1* 1 P P U U P THE CHOICE OF CHAMPION FLYERS HFor over 20 years SIG has blending finest quality model engine fuel available using finest quality ingredients instance Methanol use 995% pure thevery best grade money can buy also use real 100% pure UNitromethane get full measure youve paid based honest percentage-of-volume method percentage weight SIG fuels con tain 50-50 blend Bakers purest AA Castor Oil Inew improved Klotz Techniplate Synthetic Racing Oil maximum engine lubrication protection Based experience sincerely believe finest quality fuel can made price dont take word try some judge UyourselfPrices s,5jee oSange withOOt nOtice See dealer first available order direct Call 800-247-5008 toll free orders Latest Catalog $300 SIG MANUFACTURING CO Montezuma IA 50171 .EEEEUEEEEEUUUE U I U U U P P P Anti-Wear Additives Help keep engines running peak performance longer Satisfaction Guaranteed FREE SHIPPING ON ORDERS OVER $1500 SIG CHAMPION 2-STROKE FUEL PINT QUART 0% Nitromthane 5% Nitromethane $365$525 10% Nitromethane $415$550 15% Nitromethane $430$635 25% Nitromethatie $5 15$795 35% Nitromethane $595 $925 SIG PREMIUM 4-STROKE 10% Nitromethane 15% Nitromethane GALLON $1075 $1275 $1475 $1675 $2195 $2695 FUEL $1425 $1625 I U U I i P U U U U U U U U U U U U U mE ERR Em EKE EU U U EU Far poap~ t Up ELZ UP 5helt8I Z UP1 BhSI~ futlV NO Iaa5 urdY 0strUG~ 006,turpOIS tubS, trP 0erN e aIrcraft partS NO rap05 tuabte miflur * full afl V8 Rod n OP sturdy feds~gNUYOfl 361 ~ Jo P Leisure rO Ltd v~973.517B September 1989 167 THE BEST FUSELAGE JIG EVER PERIOD Provides Solid Support Accurate Building Rugged Construction 7 Ply Aircraft Plywood Provides Ufetime Use Two Sizes Available Regular Fuselages Up 6/ Wide Jumbo Fuselages Up 9 Wide Use Own Building Board Work Bench Base Mount Jig Station Uni-Strut Guide Rails Most Versatile Set-Up Contains Complete Hardware Instructions Including Uni-Strut Information Boxof4StandardJigStations$1795 Boa 4 Jumbo Jig Stations1995 TwoS ft long Guide Rails including mounting nuts 2195 have comments suggestions questions concerning cardboard P-5 1 please write following address Chuck Fel ton 19009 Laurel Park Rd Space 86 Compton CA 90220 CL Aerobatics/Fancher Continued page 70 black using 1 -in-high Clarendon Bold type capitals name slanted 250 ward AMA number slanted 250 back ward Four working days later appliques arrived mail hour after plane ready clear coating Application simple sounds went out hitch looked magnificent Just see photo yourself Since pictures taken Ive clear-coated ship using K&B SuperPoxy absolutely no adverse affect numbers however plan doping over advised unless applied cautiously dope will cause letters curdle Clear dope must sprayed several very light dry coats prevent spray rig allows vary amount liquid use method apply mist coats using spray cans spray first several coats light fast about 18 away paint nearly dry hits letters After four five coats like nor mal coats may applied entire ship Just cautious load lettered area down wet dope may soften earlier coats cost $575 set about 15% $48 Letraset would have cost Try think youll like IVANS MAGIC GADGET protractor device used Ivan Kristensen accurately measure aileron elevator rudder throw Takes Jess work out trimming out airplane quality tool complete instructionslog book carrying case$795 PLUG-IN ADJUSTABLE STAB KIT last can optimize stab incidence best flight charac teristics pair glass filled nylon adjusters included provide micro screw adjustment smaller front tube Main tube aluminum matching phenolic socket 5695 Include $2 SO/Item UPS esidents Add 6% Sales Tax GATOR RIC PRODUCTS 3713 Pompano Dr acola FL 32514 476-8639 Speaking finishing lets talk bit about frustration suffered result finishing process new Temptation Im going talk about what Mike Keville referred F word letter subject other day What F-word ask Through tightly clenched teeth whisper fillets rable embarrassing area fuselage mates wings tails exotic sensu ous curved area everyone looks air plane likes caress search telltale blem ishes discover symptoms such ma lignancy like impale evil grin say pleasantly little trouble Fs didnt Little Did say little bit trouble Would call having Mt St Helens erupt backyard little bit trouble Would believe name Temptation came temptations considered having untimely demise inanimate timeand-money sponge Let tell about lit tle bit trouble pertains F-word number years have using Sig Epoxolite fillets Stunt ships exceptional product extremely strong reasonable weight can shaped nearly final dimensions finger dampened water before cures lot nice things say about Epoxolite takes well being covered paint word has written about need take extra precautions painting over Heres successfully cover fillet between two sur faces angles another im perative paint adhere aggressively fillet itself Because paints shrink age will tend pull away areas PLUG-IN WING ADJUSTER KIT Four glass filled nylon brackets included key wing panels front rear allow accurately adjust panel straight flight Complete hardware & instructions5995 WING TUBE & SOCKETS Aluminum alloy tubing plug-in wings Included pair special slip-fit phenolic sockets build wing structure Now size models 7/8diax2$ 895 1diax2S 995 1diax3S1495 poorly attached adjoining surfaces significant angles another paint adheres tightly fuselage wingbut filletit will leave flat bub bled areas has pulled away smoothly radiused fillet Because flat bub bles become reflecting surfaces ex tremely noticeable severely degrade ap pearance otherwise attractive airplane Because Stunt fliers historically use butyrate type dopes covering basic filler-coating because butyrate doesnt stick well Epoxo lite have devise ways get finish adhere has found both Aero Gloss nitrate clears will adhere Epoxolite much aggressively will butyrates Ex pert craftsmen will therefore apply two three coats former over bare Epoxolite prime subsequent finishing coats butyrate approach has proven generally suc cessful important remember Aero Gloss nitrate dopes must used top butyrate paints will lift butyrate Butyrate can applied top either however Well done using nitrate sealer proceeding all-dope finish entire ship painted white first rash developed Numerous bubbles appeared over upper fillets Dont ask bot toms still looked pretty good Attempts re adhere paint proved futile always finally gave up stripped paint away clear down Epoxolite Thinking perhaps hadnt allowed fil let cure properly decided insulate paint covering entire filleted areas fairly thick layer Model Magic Filler water-based material very light sands Continued page ifl MINI-ELECTRIC 168 Model Aviation MINI POWER AT ITS BEST LIGHT WEIGHT K CHARGE T MOTCRJPR HY-70VI-ill 7 1 gesr rest Ni Includes HY-7t B Wheeling 19 grams wi Connecler end Acces HY-lUB Same HY-71J Discennecle Slide HY7O HY70R INSTANTSTART OST L CL SISiOS ighI 8elleries itchy ReiiItes $3795 ny VL FhighI 8attitry VL Field box
Edition: Model Aviation - 1989/09
Page Numbers: 65, 66, 67, 68, 69, 167, 168
4 WIDELY CONSIDERED effi cient single-engine fighter have come out World War II North American P-Si Mustang has become popu lar subjects Scale model airplane buildersand justifiably Escorting bombers way British bases targets deep Germany capable warbird instrumental gradually establish ing Allied air superiority over Luftwaffe Th6ugh P-5 1 Mustang has mod eled times both kit form scratch-built versions CL model pre sented being constructed primarily %-in corrugated cardboard unique corrugated cardboard construction greatly S reduces both building time cost de sign exploits specific properties card board allow used large sec tions folded wing example built two large pieces cardboard cardboard ribs single spar tail surfaces fuselage primarily cardboard little internal bracing result lowcost lightweight fast-building model nota bly scalelike appearance can take plenty punishment flying field Any A-in corrugated cardboard will project although material does vary weight Sources cardboard clude box manufacturers local shopping S p S centers can find stacks dis carded boxes Look cardboard brown paper side white fin ished paper other white paper outside model results smoother finish neater appearance model built scale 1% inches foot resulting wingspan 60 length 52 bottom air foil flat curved upper surface due scoring folding technique em ployed Engines 30 40 size can used Mustangs size stability make good CL sport flying model Construction hints Before begin lets Three views Debbie semiscale P-51B Mustang ready CL circle built scale 1% ft wa constructed mostly 1/8-in corrugated cardboard using scoring bending technique described text cardboard waterproofed clear polyurethane diluted 750/0 before construction airplane finished silver/blue paint scheme using two coats clear dope base three coats color Cardboard however can finished using wide variety materials because its smooth nonporous surface final product can see great-looking strongly built CL airplane can take Its share punishment flying field September 1989 65 review special tips working cardboard Glue Water-based glue such white glue Titebond recommended Contact empennage sections prior final sembly Theyre constructed laminating two pieces -in cardboard across grain create 1/4-in surfaces leading trailing edges finished n balsa strips per plans raw edges sealed gummed paper tape hinges made cloth strips left wing showing interior structure scored cardboard skin prior final sembly balsa spar capped spruce strip ribs skin 1R-in cardboard PLASTIC CANOPY PATTERN 61 61 1 1 SPINNERI/S B /4 BALSATRIAl f~TERIAFi/RC CARDBOARD UNLESS OTHER CI S SHAFT ST- CS ISS PROP ANK III II LA L~UTLINE /4 PLY cement recommended since pans can shifted gluing surfaces Folding scoring fold lines done screening tool thats available hardware store consists han dle 1 -in radius wheel end run along straightedge fold line Waterproofing cardboard quite sim 66 Model Aviation author proudly displaying cardboard masterpiece Its real eye-catcher yet ex tremely simple inexpensive fast building Its size stability make good sport flier Close-up main landing gear shows its simple arrangement using %2 wire bent shape attached nylon gear clips 1A-in ply insert wing model uses 3-in-dia tire wheel fair ing -in ply bolted gear wire dummy wheel well shape painted black close-up shows finished wing tip ready painting Note carved balsa tip -in plywood line guide place gummed paper tape sealing edges Full-Size Plans AvailableSee Page 180 THRO F EMFENNAUL IS 2 PIECES OF CARDBOARD h AAIMArFfl TOGETHER IAflAAIAA AIM I/S PLY i II IIII/AX 1/4 ISASA1/4 SQ IIIISPRUCE IVz e I3 BELLCRANK II IIIII IIIIll III IIIIIII IIIIII LEADOUT ATOP OMITTED FOR CLARITY WIRES v-S EFiAFD— tiO IFLEX 55 /4 BALSA-I _%~P4 CARDBOARDP3 FUXE1AXE1 INE 03F SAL A F2/551/4 SAL S A Fl C FF 04 -A F5 SB /5 PLY. j.- 3/32 DIAM WIRE THREAC BALSA ALL COUMEACIAL RIGHTS AESERVER C-C C FELTON SHEET OF 2 pie can applied raw material before cut out parts model Thoroughly mix 25% clear polyurethane 75% paint thinner latter can cheapest hardware store variety Brush mixture liberally onto cardboard sheet allow dry 48 hours adds no appreciable weight material renders cardboard completely water proof addition start cutting treated cardboard youll find its crisp wood divides sharply clean ly Finishing Cardboard nonporous gives solid surface no open areas cover easiest finishing method ap ply two coats clear dope sanding lightly between coats 400-grit sandpaper fol lowed three coats colored dope ever wide variety finishing materials Left cardboard right left fuselage sides shown ready assembly % x /4-Ifi balsa strips attached upper lower edges recessed % edges Right front partially finished fuselage showing fuel tank belicrank assembly place September 1989 67 CD ICIX-I I/B PLY IL V WHEELS DEAR C IFS TOP LANOING GEAR 5/22 WIRE 2 REQD may used cardboard Coverings such Solarfilm MonoKote vinyl paper can used its recom mended surface doped will result better bond Paper tape seams joints ex posed edges model covered strips gummed paper tape Obtain 1-inwide roll stationery store Simply cut thin strip length dip water smooth over seam Construction Cut out cardboard wood parts using template outlines sure note direction corruga tions Score fold cardboard parts dicated plans Empennage fin rudder stabilizer elevator made two pieces A-in cardboard laminated together across grain create A-in-thick surfac es Add x A-in balsa strip fin leading edge round off Add x A-in balsa strips stabilizer leading trailing edges round off Glue elevators A-in dowel Add /8 x A-in balsa strips remainder el evator leading edge again round off Seal raw edges gummed paper tape Hinge elevators stabilizer cloth strips four places Wing Make spar capping A-in balsa spar half x A-in spruce strip top bottom Join spar halves together A-in ply front rear centerline Glue A-in ply gear mount wing panel Glue right side wing spar onto righthand wing panel W9 Fit glue card board ribs place right wing Add cardboard doubler over ply gear mount between ribs W3 W4 Glue one-ounce weight right wing tip Glue left wing panel left spar similar fashion Add ribs gear dou bler left wing Apply glue top wing spar top ribs trailing edge wing Fold top wing surface down pin securely place until dry Add balsa tips wing Make line guide A-in ply Cut slot left wing balsa tip glue line guide place Cover trailing edge seams N,. I/B PLY JOINERS WI 1 1/4 BALSA V8 PLY W3 FLAP AND AILE NON OUTLINE CO W4 gummed paper tape Fuselage fuselage sides outlined triangular symbol drawing Apply x A-in balsa strips upper lower edges side recessed % edges shown fuselage side view Bevel strips aft end Left curved hood turtledeck under construction cardboard formers held place point single balsa stringer along centerline Right finished hood turtledeck cardboard carefully scored fit curve seams covered tape 68 Model Aviation bottom fuselage box section place Fuel tubing protruding firewall area Notice cardboard side supports ply belicrank mount spruce pushrod completed fuselage top section sure fuel tank tubing belicrank ply mount pushrod control wires properly installed before closing section Full-Size Plans AvailableSee Page 180 F2 Fl0 t F3 FG SPRUCE FOLD LINES ________________ I/8 PLY SPAR JOINER BALSA REQO TIP GUIDE KAIi LA WAW7WAWA W7 hIIII I/5 PLY LINE GUIDE I/RPLY SEAR AIDUNT 2 REDO F4 FR 03 \\~lII Ill/Il V DI C I liii W4 W3 ALL ArASWI WING SIRS 2 EACH AEQO SHEET 2 OF S P-51B MUSTANG DESIGNED B INKED BY C FELTON 0 2345A fuselage cardboard sides will come together Add cardboard supports fuselage side above fuel tank below bellcrank Make firewall Cl A-in ply Locate mounting holes KM-40 en gine mount face Cl Drill mounting holes install blind mounting nuts back side Cl Drill hole Cl fuel tubing exit Brace four back edges Cl -in triangular balsa Glue Cl right side fuselage dry glue left side fuselage Cl Attach fuel tank A-in ply support rubberbands Make pushrod %2-in-dia wire A-in-sq spruce attach belicrank along lead-out wires Install tank bellcrank assemblies gluing ply supports cardboard supports sides fuselage Glue sides together tail Glue Fl F2 place cover top fuselage sure bring fuel fill overflow tubing out during covering operations Cover bottom fuse lage gluing F3 F4 F5 F6 place Add bulkheads through H top fu selage adding /B x A-in stringers Cover bulkheads through D Dl has scored folded Cover bulkheads F E D2 Cover bulkheads E through H D3 Add three J bulkheads Continued page 167 Close-up tail wheel gear wire tached plywood base nylon thread business end Debbie engine 30 40 size range mounted upside down KM4O mount shaft extension must used achieve correct spinner clearance September 1989 69 Bill Booth architect mastermind 1989 business manager Bob Beecroft Lynn Martin new good friend Truman Puck ett Chef du Taft whole passel folks reminded act attitude Taft very special place roses really smell people Plan USFFC 1990 now Theres no telling itll cool 1989 certainly will groovy P-51 B/Felton Continued page 69 stringer forward bottom fuselage cover D4 Add balsa sheet piece bottom F5 rounding off edges shown view B-B Build up cowl -in balsa sheet shown top side views hollow out Glue A-in ply C2 piece front top half Glue C3 front end cowls removable bottom Sand carve hol low cowl shape Add 1-in ply pieces inside both top bottom halves cowl sides shown cowl top side views blind nut installed inside top cowl ply 4-40 bolt through bottom cowl ply form cowl attachment top half cowl permanently glued nose model Test fit engine cowl drill mount ing holes KM-40 mount Use shaft exten sion achieve adequate spinner clearance Cut holes cowl block cylinder head ex haust needle valve Glue stabilizer fuselage Add -in triangular balsa bottom stabilizer fuselage intersection bracing Glue fin fuselage Add scrap balsa bracing between fin stabilizer intersection round off shown view C-C Add rudder fin trailing edge offset ide flying circle Make tail wheel gear %rin-dia wire Bend gear shown position /-in ply support drill holes Attach gear nylon thread gluing liberally dry glue unit place bottom fuselage cut out Add scrap balsa wheel fairings Make main gear %2-in-dia wtre shown Make gear fairings A-in ply tach nylon gear clips Attach gear assem blies 1-in ply supports bottom wing nylon gear clips Finishing color scheme silver overall medium blue trim Make lettering signia MonoKote Make canopy thin plastic epoxy fuselage Outline canopy strips black MonoKote aileron flap outlines also made black MonoKote Final assembly Glue wing fuselage Make air scoop hollowed-out balsa block glue bottom wing Add balsa exhaust stacks both sides forward fuselage Pass lead-out wires through wing tip line guide tie off Attach nylon control horn elevator Hook up pushrod Attach 3-in-dia wheels main gear 1 -in -dia wheel tail gear tach 12 x 6 prop 3-in spinner en gine sure balance Mustang centerof-gravity shown plans Youre ready take flying field see yourself rugged lightweight plane Continued page 168 I U U P U p p I P U U P p U P U U Superior Igniters Improve starting idle acceleration Youll notice power bargain fuels Special Detergents Promote clean burning prevent residue buildup Rust Inhibitors Protect engines corrosion After run oil needed engines Film Strength Additives Increase lubricity provide extra lean run protection 1 E * 1* 1 P P U U P THE CHOICE OF CHAMPION FLYERS HFor over 20 years SIG has blending finest quality model engine fuel available using finest quality ingredients instance Methanol use 995% pure thevery best grade money can buy also use real 100% pure UNitromethane get full measure youve paid based honest percentage-of-volume method percentage weight SIG fuels con tain 50-50 blend Bakers purest AA Castor Oil Inew improved Klotz Techniplate Synthetic Racing Oil maximum engine lubrication protection Based experience sincerely believe finest quality fuel can made price dont take word try some judge UyourselfPrices s,5jee oSange withOOt nOtice See dealer first available order direct Call 800-247-5008 toll free orders Latest Catalog $300 SIG MANUFACTURING CO Montezuma IA 50171 .EEEEUEEEEEUUUE U I U U U P P P Anti-Wear Additives Help keep engines running peak performance longer Satisfaction Guaranteed FREE SHIPPING ON ORDERS OVER $1500 SIG CHAMPION 2-STROKE FUEL PINT QUART 0% Nitromthane 5% Nitromethane $365$525 10% Nitromethane $415$550 15% Nitromethane $430$635 25% Nitromethatie $5 15$795 35% Nitromethane $595 $925 SIG PREMIUM 4-STROKE 10% Nitromethane 15% Nitromethane GALLON $1075 $1275 $1475 $1675 $2195 $2695 FUEL $1425 $1625 I U U I i P U U U U U U U U U U U U U mE ERR Em EKE EU U U EU Far poap~ t Up ELZ UP 5helt8I Z UP1 BhSI~ futlV NO Iaa5 urdY 0strUG~ 006,turpOIS tubS, trP 0erN e aIrcraft partS NO rap05 tuabte miflur * full afl V8 Rod n OP sturdy feds~gNUYOfl 361 ~ Jo P Leisure rO Ltd v~973.517B September 1989 167 THE BEST FUSELAGE JIG EVER PERIOD Provides Solid Support Accurate Building Rugged Construction 7 Ply Aircraft Plywood Provides Ufetime Use Two Sizes Available Regular Fuselages Up 6/ Wide Jumbo Fuselages Up 9 Wide Use Own Building Board Work Bench Base Mount Jig Station Uni-Strut Guide Rails Most Versatile Set-Up Contains Complete Hardware Instructions Including Uni-Strut Information Boxof4StandardJigStations$1795 Boa 4 Jumbo Jig Stations1995 TwoS ft long Guide Rails including mounting nuts 2195 have comments suggestions questions concerning cardboard P-5 1 please write following address Chuck Fel ton 19009 Laurel Park Rd Space 86 Compton CA 90220 CL Aerobatics/Fancher Continued page 70 black using 1 -in-high Clarendon Bold type capitals name slanted 250 ward AMA number slanted 250 back ward Four working days later appliques arrived mail hour after plane ready clear coating Application simple sounds went out hitch looked magnificent Just see photo yourself Since pictures taken Ive clear-coated ship using K&B SuperPoxy absolutely no adverse affect numbers however plan doping over advised unless applied cautiously dope will cause letters curdle Clear dope must sprayed several very light dry coats prevent spray rig allows vary amount liquid use method apply mist coats using spray cans spray first several coats light fast about 18 away paint nearly dry hits letters After four five coats like nor mal coats may applied entire ship Just cautious load lettered area down wet dope may soften earlier coats cost $575 set about 15% $48 Letraset would have cost Try think youll like IVANS MAGIC GADGET protractor device used Ivan Kristensen accurately measure aileron elevator rudder throw Takes Jess work out trimming out airplane quality tool complete instructionslog book carrying case$795 PLUG-IN ADJUSTABLE STAB KIT last can optimize stab incidence best flight charac teristics pair glass filled nylon adjusters included provide micro screw adjustment smaller front tube Main tube aluminum matching phenolic socket 5695 Include $2 SO/Item UPS esidents Add 6% Sales Tax GATOR RIC PRODUCTS 3713 Pompano Dr acola FL 32514 476-8639 Speaking finishing lets talk bit about frustration suffered result finishing process new Temptation Im going talk about what Mike Keville referred F word letter subject other day What F-word ask Through tightly clenched teeth whisper fillets rable embarrassing area fuselage mates wings tails exotic sensu ous curved area everyone looks air plane likes caress search telltale blem ishes discover symptoms such ma lignancy like impale evil grin say pleasantly little trouble Fs didnt Little Did say little bit trouble Would call having Mt St Helens erupt backyard little bit trouble Would believe name Temptation came temptations considered having untimely demise inanimate timeand-money sponge Let tell about lit tle bit trouble pertains F-word number years have using Sig Epoxolite fillets Stunt ships exceptional product extremely strong reasonable weight can shaped nearly final dimensions finger dampened water before cures lot nice things say about Epoxolite takes well being covered paint word has written about need take extra precautions painting over Heres successfully cover fillet between two sur faces angles another im perative paint adhere aggressively fillet itself Because paints shrink age will tend pull away areas PLUG-IN WING ADJUSTER KIT Four glass filled nylon brackets included key wing panels front rear allow accurately adjust panel straight flight Complete hardware & instructions5995 WING TUBE & SOCKETS Aluminum alloy tubing plug-in wings Included pair special slip-fit phenolic sockets build wing structure Now size models 7/8diax2$ 895 1diax2S 995 1diax3S1495 poorly attached adjoining surfaces significant angles another paint adheres tightly fuselage wingbut filletit will leave flat bub bled areas has pulled away smoothly radiused fillet Because flat bub bles become reflecting surfaces ex tremely noticeable severely degrade ap pearance otherwise attractive airplane Because Stunt fliers historically use butyrate type dopes covering basic filler-coating because butyrate doesnt stick well Epoxo lite have devise ways get finish adhere has found both Aero Gloss nitrate clears will adhere Epoxolite much aggressively will butyrates Ex pert craftsmen will therefore apply two three coats former over bare Epoxolite prime subsequent finishing coats butyrate approach has proven generally suc cessful important remember Aero Gloss nitrate dopes must used top butyrate paints will lift butyrate Butyrate can applied top either however Well done using nitrate sealer proceeding all-dope finish entire ship painted white first rash developed Numerous bubbles appeared over upper fillets Dont ask bot toms still looked pretty good Attempts re adhere paint proved futile always finally gave up stripped paint away clear down Epoxolite Thinking perhaps hadnt allowed fil let cure properly decided insulate paint covering entire filleted areas fairly thick layer Model Magic Filler water-based material very light sands Continued page ifl MINI-ELECTRIC 168 Model Aviation MINI POWER AT ITS BEST LIGHT WEIGHT K CHARGE T MOTCRJPR HY-70VI-ill 7 1 gesr rest Ni Includes HY-7t B Wheeling 19 grams wi Connecler end Acces HY-lUB Same HY-71J Discennecle Slide HY7O HY70R INSTANTSTART OST L CL SISiOS ighI 8elleries itchy ReiiItes $3795 ny VL FhighI 8attitry VL Field box
Edition: Model Aviation - 1989/09
Page Numbers: 65, 66, 67, 68, 69, 167, 168
4 WIDELY CONSIDERED effi cient single-engine fighter have come out World War II North American P-Si Mustang has become popu lar subjects Scale model airplane buildersand justifiably Escorting bombers way British bases targets deep Germany capable warbird instrumental gradually establish ing Allied air superiority over Luftwaffe Th6ugh P-5 1 Mustang has mod eled times both kit form scratch-built versions CL model pre sented being constructed primarily %-in corrugated cardboard unique corrugated cardboard construction greatly S reduces both building time cost de sign exploits specific properties card board allow used large sec tions folded wing example built two large pieces cardboard cardboard ribs single spar tail surfaces fuselage primarily cardboard little internal bracing result lowcost lightweight fast-building model nota bly scalelike appearance can take plenty punishment flying field Any A-in corrugated cardboard will project although material does vary weight Sources cardboard clude box manufacturers local shopping S p S centers can find stacks dis carded boxes Look cardboard brown paper side white fin ished paper other white paper outside model results smoother finish neater appearance model built scale 1% inches foot resulting wingspan 60 length 52 bottom air foil flat curved upper surface due scoring folding technique em ployed Engines 30 40 size can used Mustangs size stability make good CL sport flying model Construction hints Before begin lets Three views Debbie semiscale P-51B Mustang ready CL circle built scale 1% ft wa constructed mostly 1/8-in corrugated cardboard using scoring bending technique described text cardboard waterproofed clear polyurethane diluted 750/0 before construction airplane finished silver/blue paint scheme using two coats clear dope base three coats color Cardboard however can finished using wide variety materials because its smooth nonporous surface final product can see great-looking strongly built CL airplane can take Its share punishment flying field September 1989 65 review special tips working cardboard Glue Water-based glue such white glue Titebond recommended Contact empennage sections prior final sembly Theyre constructed laminating two pieces -in cardboard across grain create 1/4-in surfaces leading trailing edges finished n balsa strips per plans raw edges sealed gummed paper tape hinges made cloth strips left wing showing interior structure scored cardboard skin prior final sembly balsa spar capped spruce strip ribs skin 1R-in cardboard PLASTIC CANOPY PATTERN 61 61 1 1 SPINNERI/S B /4 BALSATRIAl f~TERIAFi/RC CARDBOARD UNLESS OTHER CI S SHAFT ST- CS ISS PROP ANK III II LA L~UTLINE /4 PLY cement recommended since pans can shifted gluing surfaces Folding scoring fold lines done screening tool thats available hardware store consists han dle 1 -in radius wheel end run along straightedge fold line Waterproofing cardboard quite sim 66 Model Aviation author proudly displaying cardboard masterpiece Its real eye-catcher yet ex tremely simple inexpensive fast building Its size stability make good sport flier Close-up main landing gear shows its simple arrangement using %2 wire bent shape attached nylon gear clips 1A-in ply insert wing model uses 3-in-dia tire wheel fair ing -in ply bolted gear wire dummy wheel well shape painted black close-up shows finished wing tip ready painting Note carved balsa tip -in plywood line guide place gummed paper tape sealing edges Full-Size Plans AvailableSee Page 180 THRO F EMFENNAUL IS 2 PIECES OF CARDBOARD h AAIMArFfl TOGETHER IAflAAIAA AIM I/S PLY i II IIII/AX 1/4 ISASA1/4 SQ IIIISPRUCE IVz e I3 BELLCRANK II IIIII IIIIll III IIIIIII IIIIII LEADOUT ATOP OMITTED FOR CLARITY WIRES v-S EFiAFD— tiO IFLEX 55 /4 BALSA-I _%~P4 CARDBOARDP3 FUXE1AXE1 INE 03F SAL A F2/551/4 SAL S A Fl C FF 04 -A F5 SB /5 PLY. j.- 3/32 DIAM WIRE THREAC BALSA ALL COUMEACIAL RIGHTS AESERVER C-C C FELTON SHEET OF 2 pie can applied raw material before cut out parts model Thoroughly mix 25% clear polyurethane 75% paint thinner latter can cheapest hardware store variety Brush mixture liberally onto cardboard sheet allow dry 48 hours adds no appreciable weight material renders cardboard completely water proof addition start cutting treated cardboard youll find its crisp wood divides sharply clean ly Finishing Cardboard nonporous gives solid surface no open areas cover easiest finishing method ap ply two coats clear dope sanding lightly between coats 400-grit sandpaper fol lowed three coats colored dope ever wide variety finishing materials Left cardboard right left fuselage sides shown ready assembly % x /4-Ifi balsa strips attached upper lower edges recessed % edges Right front partially finished fuselage showing fuel tank belicrank assembly place September 1989 67 CD ICIX-I I/B PLY IL V WHEELS DEAR C IFS TOP LANOING GEAR 5/22 WIRE 2 REQD may used cardboard Coverings such Solarfilm MonoKote vinyl paper can used its recom mended surface doped will result better bond Paper tape seams joints ex posed edges model covered strips gummed paper tape Obtain 1-inwide roll stationery store Simply cut thin strip length dip water smooth over seam Construction Cut out cardboard wood parts using template outlines sure note direction corruga tions Score fold cardboard parts dicated plans Empennage fin rudder stabilizer elevator made two pieces A-in cardboard laminated together across grain create A-in-thick surfac es Add x A-in balsa strip fin leading edge round off Add x A-in balsa strips stabilizer leading trailing edges round off Glue elevators A-in dowel Add /8 x A-in balsa strips remainder el evator leading edge again round off Seal raw edges gummed paper tape Hinge elevators stabilizer cloth strips four places Wing Make spar capping A-in balsa spar half x A-in spruce strip top bottom Join spar halves together A-in ply front rear centerline Glue A-in ply gear mount wing panel Glue right side wing spar onto righthand wing panel W9 Fit glue card board ribs place right wing Add cardboard doubler over ply gear mount between ribs W3 W4 Glue one-ounce weight right wing tip Glue left wing panel left spar similar fashion Add ribs gear dou bler left wing Apply glue top wing spar top ribs trailing edge wing Fold top wing surface down pin securely place until dry Add balsa tips wing Make line guide A-in ply Cut slot left wing balsa tip glue line guide place Cover trailing edge seams N,. I/B PLY JOINERS WI 1 1/4 BALSA V8 PLY W3 FLAP AND AILE NON OUTLINE CO W4 gummed paper tape Fuselage fuselage sides outlined triangular symbol drawing Apply x A-in balsa strips upper lower edges side recessed % edges shown fuselage side view Bevel strips aft end Left curved hood turtledeck under construction cardboard formers held place point single balsa stringer along centerline Right finished hood turtledeck cardboard carefully scored fit curve seams covered tape 68 Model Aviation bottom fuselage box section place Fuel tubing protruding firewall area Notice cardboard side supports ply belicrank mount spruce pushrod completed fuselage top section sure fuel tank tubing belicrank ply mount pushrod control wires properly installed before closing section Full-Size Plans AvailableSee Page 180 F2 Fl0 t F3 FG SPRUCE FOLD LINES ________________ I/8 PLY SPAR JOINER BALSA REQO TIP GUIDE KAIi LA WAW7WAWA W7 hIIII I/5 PLY LINE GUIDE I/RPLY SEAR AIDUNT 2 REDO F4 FR 03 \\~lII Ill/Il V DI C I liii W4 W3 ALL ArASWI WING SIRS 2 EACH AEQO SHEET 2 OF S P-51B MUSTANG DESIGNED B INKED BY C FELTON 0 2345A fuselage cardboard sides will come together Add cardboard supports fuselage side above fuel tank below bellcrank Make firewall Cl A-in ply Locate mounting holes KM-40 en gine mount face Cl Drill mounting holes install blind mounting nuts back side Cl Drill hole Cl fuel tubing exit Brace four back edges Cl -in triangular balsa Glue Cl right side fuselage dry glue left side fuselage Cl Attach fuel tank A-in ply support rubberbands Make pushrod %2-in-dia wire A-in-sq spruce attach belicrank along lead-out wires Install tank bellcrank assemblies gluing ply supports cardboard supports sides fuselage Glue sides together tail Glue Fl F2 place cover top fuselage sure bring fuel fill overflow tubing out during covering operations Cover bottom fuse lage gluing F3 F4 F5 F6 place Add bulkheads through H top fu selage adding /B x A-in stringers Cover bulkheads through D Dl has scored folded Cover bulkheads F E D2 Cover bulkheads E through H D3 Add three J bulkheads Continued page 167 Close-up tail wheel gear wire tached plywood base nylon thread business end Debbie engine 30 40 size range mounted upside down KM4O mount shaft extension must used achieve correct spinner clearance September 1989 69 Bill Booth architect mastermind 1989 business manager Bob Beecroft Lynn Martin new good friend Truman Puck ett Chef du Taft whole passel folks reminded act attitude Taft very special place roses really smell people Plan USFFC 1990 now Theres no telling itll cool 1989 certainly will groovy P-51 B/Felton Continued page 69 stringer forward bottom fuselage cover D4 Add balsa sheet piece bottom F5 rounding off edges shown view B-B Build up cowl -in balsa sheet shown top side views hollow out Glue A-in ply C2 piece front top half Glue C3 front end cowls removable bottom Sand carve hol low cowl shape Add 1-in ply pieces inside both top bottom halves cowl sides shown cowl top side views blind nut installed inside top cowl ply 4-40 bolt through bottom cowl ply form cowl attachment top half cowl permanently glued nose model Test fit engine cowl drill mount ing holes KM-40 mount Use shaft exten sion achieve adequate spinner clearance Cut holes cowl block cylinder head ex haust needle valve Glue stabilizer fuselage Add -in triangular balsa bottom stabilizer fuselage intersection bracing Glue fin fuselage Add scrap balsa bracing between fin stabilizer intersection round off shown view C-C Add rudder fin trailing edge offset ide flying circle Make tail wheel gear %rin-dia wire Bend gear shown position /-in ply support drill holes Attach gear nylon thread gluing liberally dry glue unit place bottom fuselage cut out Add scrap balsa wheel fairings Make main gear %2-in-dia wtre shown Make gear fairings A-in ply tach nylon gear clips Attach gear assem blies 1-in ply supports bottom wing nylon gear clips Finishing color scheme silver overall medium blue trim Make lettering signia MonoKote Make canopy thin plastic epoxy fuselage Outline canopy strips black MonoKote aileron flap outlines also made black MonoKote Final assembly Glue wing fuselage Make air scoop hollowed-out balsa block glue bottom wing Add balsa exhaust stacks both sides forward fuselage Pass lead-out wires through wing tip line guide tie off Attach nylon control horn elevator Hook up pushrod Attach 3-in-dia wheels main gear 1 -in -dia wheel tail gear tach 12 x 6 prop 3-in spinner en gine sure balance Mustang centerof-gravity shown plans Youre ready take flying field see yourself rugged lightweight plane Continued page 168 I U U P U p p I P U U P p U P U U Superior Igniters Improve starting idle acceleration Youll notice power bargain fuels Special Detergents Promote clean burning prevent residue buildup Rust Inhibitors Protect engines corrosion After run oil needed engines Film Strength Additives Increase lubricity provide extra lean run protection 1 E * 1* 1 P P U U P THE CHOICE OF CHAMPION FLYERS HFor over 20 years SIG has blending finest quality model engine fuel available using finest quality ingredients instance Methanol use 995% pure thevery best grade money can buy also use real 100% pure UNitromethane get full measure youve paid based honest percentage-of-volume method percentage weight SIG fuels con tain 50-50 blend Bakers purest AA Castor Oil Inew improved Klotz Techniplate Synthetic Racing Oil maximum engine lubrication protection Based experience sincerely believe finest quality fuel can made price dont take word try some judge UyourselfPrices s,5jee oSange withOOt nOtice See dealer first available order direct Call 800-247-5008 toll free orders Latest Catalog $300 SIG MANUFACTURING CO Montezuma IA 50171 .EEEEUEEEEEUUUE U I U U U P P P Anti-Wear Additives Help keep engines running peak performance longer Satisfaction Guaranteed FREE SHIPPING ON ORDERS OVER $1500 SIG CHAMPION 2-STROKE FUEL PINT QUART 0% Nitromthane 5% Nitromethane $365$525 10% Nitromethane $415$550 15% Nitromethane $430$635 25% Nitromethatie $5 15$795 35% Nitromethane $595 $925 SIG PREMIUM 4-STROKE 10% Nitromethane 15% Nitromethane GALLON $1075 $1275 $1475 $1675 $2195 $2695 FUEL $1425 $1625 I U U I i P U U U U U U U U U U U U U mE ERR Em EKE EU U U EU Far poap~ t Up ELZ UP 5helt8I Z UP1 BhSI~ futlV NO Iaa5 urdY 0strUG~ 006,turpOIS tubS, trP 0erN e aIrcraft partS NO rap05 tuabte miflur * full afl V8 Rod n OP sturdy feds~gNUYOfl 361 ~ Jo P Leisure rO Ltd v~973.517B September 1989 167 THE BEST FUSELAGE JIG EVER PERIOD Provides Solid Support Accurate Building Rugged Construction 7 Ply Aircraft Plywood Provides Ufetime Use Two Sizes Available Regular Fuselages Up 6/ Wide Jumbo Fuselages Up 9 Wide Use Own Building Board Work Bench Base Mount Jig Station Uni-Strut Guide Rails Most Versatile Set-Up Contains Complete Hardware Instructions Including Uni-Strut Information Boxof4StandardJigStations$1795 Boa 4 Jumbo Jig Stations1995 TwoS ft long Guide Rails including mounting nuts 2195 have comments suggestions questions concerning cardboard P-5 1 please write following address Chuck Fel ton 19009 Laurel Park Rd Space 86 Compton CA 90220 CL Aerobatics/Fancher Continued page 70 black using 1 -in-high Clarendon Bold type capitals name slanted 250 ward AMA number slanted 250 back ward Four working days later appliques arrived mail hour after plane ready clear coating Application simple sounds went out hitch looked magnificent Just see photo yourself Since pictures taken Ive clear-coated ship using K&B SuperPoxy absolutely no adverse affect numbers however plan doping over advised unless applied cautiously dope will cause letters curdle Clear dope must sprayed several very light dry coats prevent spray rig allows vary amount liquid use method apply mist coats using spray cans spray first several coats light fast about 18 away paint nearly dry hits letters After four five coats like nor mal coats may applied entire ship Just cautious load lettered area down wet dope may soften earlier coats cost $575 set about 15% $48 Letraset would have cost Try think youll like IVANS MAGIC GADGET protractor device used Ivan Kristensen accurately measure aileron elevator rudder throw Takes Jess work out trimming out airplane quality tool complete instructionslog book carrying case$795 PLUG-IN ADJUSTABLE STAB KIT last can optimize stab incidence best flight charac teristics pair glass filled nylon adjusters included provide micro screw adjustment smaller front tube Main tube aluminum matching phenolic socket 5695 Include $2 SO/Item UPS esidents Add 6% Sales Tax GATOR RIC PRODUCTS 3713 Pompano Dr acola FL 32514 476-8639 Speaking finishing lets talk bit about frustration suffered result finishing process new Temptation Im going talk about what Mike Keville referred F word letter subject other day What F-word ask Through tightly clenched teeth whisper fillets rable embarrassing area fuselage mates wings tails exotic sensu ous curved area everyone looks air plane likes caress search telltale blem ishes discover symptoms such ma lignancy like impale evil grin say pleasantly little trouble Fs didnt Little Did say little bit trouble Would call having Mt St Helens erupt backyard little bit trouble Would believe name Temptation came temptations considered having untimely demise inanimate timeand-money sponge Let tell about lit tle bit trouble pertains F-word number years have using Sig Epoxolite fillets Stunt ships exceptional product extremely strong reasonable weight can shaped nearly final dimensions finger dampened water before cures lot nice things say about Epoxolite takes well being covered paint word has written about need take extra precautions painting over Heres successfully cover fillet between two sur faces angles another im perative paint adhere aggressively fillet itself Because paints shrink age will tend pull away areas PLUG-IN WING ADJUSTER KIT Four glass filled nylon brackets included key wing panels front rear allow accurately adjust panel straight flight Complete hardware & instructions5995 WING TUBE & SOCKETS Aluminum alloy tubing plug-in wings Included pair special slip-fit phenolic sockets build wing structure Now size models 7/8diax2$ 895 1diax2S 995 1diax3S1495 poorly attached adjoining surfaces significant angles another paint adheres tightly fuselage wingbut filletit will leave flat bub bled areas has pulled away smoothly radiused fillet Because flat bub bles become reflecting surfaces ex tremely noticeable severely degrade ap pearance otherwise attractive airplane Because Stunt fliers historically use butyrate type dopes covering basic filler-coating because butyrate doesnt stick well Epoxo lite have devise ways get finish adhere has found both Aero Gloss nitrate clears will adhere Epoxolite much aggressively will butyrates Ex pert craftsmen will therefore apply two three coats former over bare Epoxolite prime subsequent finishing coats butyrate approach has proven generally suc cessful important remember Aero Gloss nitrate dopes must used top butyrate paints will lift butyrate Butyrate can applied top either however Well done using nitrate sealer proceeding all-dope finish entire ship painted white first rash developed Numerous bubbles appeared over upper fillets Dont ask bot toms still looked pretty good Attempts re adhere paint proved futile always finally gave up stripped paint away clear down Epoxolite Thinking perhaps hadnt allowed fil let cure properly decided insulate paint covering entire filleted areas fairly thick layer Model Magic Filler water-based material very light sands Continued page ifl MINI-ELECTRIC 168 Model Aviation MINI POWER AT ITS BEST LIGHT WEIGHT K CHARGE T MOTCRJPR HY-70VI-ill 7 1 gesr rest Ni Includes HY-7t B Wheeling 19 grams wi Connecler end Acces HY-lUB Same HY-71J Discennecle Slide HY7O HY70R INSTANTSTART OST L CL SISiOS ighI 8elleries itchy ReiiItes $3795 ny VL FhighI 8attitry VL Field box
Edition: Model Aviation - 1989/09
Page Numbers: 65, 66, 67, 68, 69, 167, 168
4 WIDELY CONSIDERED effi cient single-engine fighter have come out World War II North American P-Si Mustang has become popu lar subjects Scale model airplane buildersand justifiably Escorting bombers way British bases targets deep Germany capable warbird instrumental gradually establish ing Allied air superiority over Luftwaffe Th6ugh P-5 1 Mustang has mod eled times both kit form scratch-built versions CL model pre sented being constructed primarily %-in corrugated cardboard unique corrugated cardboard construction greatly S reduces both building time cost de sign exploits specific properties card board allow used large sec tions folded wing example built two large pieces cardboard cardboard ribs single spar tail surfaces fuselage primarily cardboard little internal bracing result lowcost lightweight fast-building model nota bly scalelike appearance can take plenty punishment flying field Any A-in corrugated cardboard will project although material does vary weight Sources cardboard clude box manufacturers local shopping S p S centers can find stacks dis carded boxes Look cardboard brown paper side white fin ished paper other white paper outside model results smoother finish neater appearance model built scale 1% inches foot resulting wingspan 60 length 52 bottom air foil flat curved upper surface due scoring folding technique em ployed Engines 30 40 size can used Mustangs size stability make good CL sport flying model Construction hints Before begin lets Three views Debbie semiscale P-51B Mustang ready CL circle built scale 1% ft wa constructed mostly 1/8-in corrugated cardboard using scoring bending technique described text cardboard waterproofed clear polyurethane diluted 750/0 before construction airplane finished silver/blue paint scheme using two coats clear dope base three coats color Cardboard however can finished using wide variety materials because its smooth nonporous surface final product can see great-looking strongly built CL airplane can take Its share punishment flying field September 1989 65 review special tips working cardboard Glue Water-based glue such white glue Titebond recommended Contact empennage sections prior final sembly Theyre constructed laminating two pieces -in cardboard across grain create 1/4-in surfaces leading trailing edges finished n balsa strips per plans raw edges sealed gummed paper tape hinges made cloth strips left wing showing interior structure scored cardboard skin prior final sembly balsa spar capped spruce strip ribs skin 1R-in cardboard PLASTIC CANOPY PATTERN 61 61 1 1 SPINNERI/S B /4 BALSATRIAl f~TERIAFi/RC CARDBOARD UNLESS OTHER CI S SHAFT ST- CS ISS PROP ANK III II LA L~UTLINE /4 PLY cement recommended since pans can shifted gluing surfaces Folding scoring fold lines done screening tool thats available hardware store consists han dle 1 -in radius wheel end run along straightedge fold line Waterproofing cardboard quite sim 66 Model Aviation author proudly displaying cardboard masterpiece Its real eye-catcher yet ex tremely simple inexpensive fast building Its size stability make good sport flier Close-up main landing gear shows its simple arrangement using %2 wire bent shape attached nylon gear clips 1A-in ply insert wing model uses 3-in-dia tire wheel fair ing -in ply bolted gear wire dummy wheel well shape painted black close-up shows finished wing tip ready painting Note carved balsa tip -in plywood line guide place gummed paper tape sealing edges Full-Size Plans AvailableSee Page 180 THRO F EMFENNAUL IS 2 PIECES OF CARDBOARD h AAIMArFfl TOGETHER IAflAAIAA AIM I/S PLY i II IIII/AX 1/4 ISASA1/4 SQ IIIISPRUCE IVz e I3 BELLCRANK II IIIII IIIIll III IIIIIII IIIIII LEADOUT ATOP OMITTED FOR CLARITY WIRES v-S EFiAFD— tiO IFLEX 55 /4 BALSA-I _%~P4 CARDBOARDP3 FUXE1AXE1 INE 03F SAL A F2/551/4 SAL S A Fl C FF 04 -A F5 SB /5 PLY. j.- 3/32 DIAM WIRE THREAC BALSA ALL COUMEACIAL RIGHTS AESERVER C-C C FELTON SHEET OF 2 pie can applied raw material before cut out parts model Thoroughly mix 25% clear polyurethane 75% paint thinner latter can cheapest hardware store variety Brush mixture liberally onto cardboard sheet allow dry 48 hours adds no appreciable weight material renders cardboard completely water proof addition start cutting treated cardboard youll find its crisp wood divides sharply clean ly Finishing Cardboard nonporous gives solid surface no open areas cover easiest finishing method ap ply two coats clear dope sanding lightly between coats 400-grit sandpaper fol lowed three coats colored dope ever wide variety finishing materials Left cardboard right left fuselage sides shown ready assembly % x /4-Ifi balsa strips attached upper lower edges recessed % edges Right front partially finished fuselage showing fuel tank belicrank assembly place September 1989 67 CD ICIX-I I/B PLY IL V WHEELS DEAR C IFS TOP LANOING GEAR 5/22 WIRE 2 REQD may used cardboard Coverings such Solarfilm MonoKote vinyl paper can used its recom mended surface doped will result better bond Paper tape seams joints ex posed edges model covered strips gummed paper tape Obtain 1-inwide roll stationery store Simply cut thin strip length dip water smooth over seam Construction Cut out cardboard wood parts using template outlines sure note direction corruga tions Score fold cardboard parts dicated plans Empennage fin rudder stabilizer elevator made two pieces A-in cardboard laminated together across grain create A-in-thick surfac es Add x A-in balsa strip fin leading edge round off Add x A-in balsa strips stabilizer leading trailing edges round off Glue elevators A-in dowel Add /8 x A-in balsa strips remainder el evator leading edge again round off Seal raw edges gummed paper tape Hinge elevators stabilizer cloth strips four places Wing Make spar capping A-in balsa spar half x A-in spruce strip top bottom Join spar halves together A-in ply front rear centerline Glue A-in ply gear mount wing panel Glue right side wing spar onto righthand wing panel W9 Fit glue card board ribs place right wing Add cardboard doubler over ply gear mount between ribs W3 W4 Glue one-ounce weight right wing tip Glue left wing panel left spar similar fashion Add ribs gear dou bler left wing Apply glue top wing spar top ribs trailing edge wing Fold top wing surface down pin securely place until dry Add balsa tips wing Make line guide A-in ply Cut slot left wing balsa tip glue line guide place Cover trailing edge seams N,. I/B PLY JOINERS WI 1 1/4 BALSA V8 PLY W3 FLAP AND AILE NON OUTLINE CO W4 gummed paper tape Fuselage fuselage sides outlined triangular symbol drawing Apply x A-in balsa strips upper lower edges side recessed % edges shown fuselage side view Bevel strips aft end Left curved hood turtledeck under construction cardboard formers held place point single balsa stringer along centerline Right finished hood turtledeck cardboard carefully scored fit curve seams covered tape 68 Model Aviation bottom fuselage box section place Fuel tubing protruding firewall area Notice cardboard side supports ply belicrank mount spruce pushrod completed fuselage top section sure fuel tank tubing belicrank ply mount pushrod control wires properly installed before closing section Full-Size Plans AvailableSee Page 180 F2 Fl0 t F3 FG SPRUCE FOLD LINES ________________ I/8 PLY SPAR JOINER BALSA REQO TIP GUIDE KAIi LA WAW7WAWA W7 hIIII I/5 PLY LINE GUIDE I/RPLY SEAR AIDUNT 2 REDO F4 FR 03 \\~lII Ill/Il V DI C I liii W4 W3 ALL ArASWI WING SIRS 2 EACH AEQO SHEET 2 OF S P-51B MUSTANG DESIGNED B INKED BY C FELTON 0 2345A fuselage cardboard sides will come together Add cardboard supports fuselage side above fuel tank below bellcrank Make firewall Cl A-in ply Locate mounting holes KM-40 en gine mount face Cl Drill mounting holes install blind mounting nuts back side Cl Drill hole Cl fuel tubing exit Brace four back edges Cl -in triangular balsa Glue Cl right side fuselage dry glue left side fuselage Cl Attach fuel tank A-in ply support rubberbands Make pushrod %2-in-dia wire A-in-sq spruce attach belicrank along lead-out wires Install tank bellcrank assemblies gluing ply supports cardboard supports sides fuselage Glue sides together tail Glue Fl F2 place cover top fuselage sure bring fuel fill overflow tubing out during covering operations Cover bottom fuse lage gluing F3 F4 F5 F6 place Add bulkheads through H top fu selage adding /B x A-in stringers Cover bulkheads through D Dl has scored folded Cover bulkheads F E D2 Cover bulkheads E through H D3 Add three J bulkheads Continued page 167 Close-up tail wheel gear wire tached plywood base nylon thread business end Debbie engine 30 40 size range mounted upside down KM4O mount shaft extension must used achieve correct spinner clearance September 1989 69 Bill Booth architect mastermind 1989 business manager Bob Beecroft Lynn Martin new good friend Truman Puck ett Chef du Taft whole passel folks reminded act attitude Taft very special place roses really smell people Plan USFFC 1990 now Theres no telling itll cool 1989 certainly will groovy P-51 B/Felton Continued page 69 stringer forward bottom fuselage cover D4 Add balsa sheet piece bottom F5 rounding off edges shown view B-B Build up cowl -in balsa sheet shown top side views hollow out Glue A-in ply C2 piece front top half Glue C3 front end cowls removable bottom Sand carve hol low cowl shape Add 1-in ply pieces inside both top bottom halves cowl sides shown cowl top side views blind nut installed inside top cowl ply 4-40 bolt through bottom cowl ply form cowl attachment top half cowl permanently glued nose model Test fit engine cowl drill mount ing holes KM-40 mount Use shaft exten sion achieve adequate spinner clearance Cut holes cowl block cylinder head ex haust needle valve Glue stabilizer fuselage Add -in triangular balsa bottom stabilizer fuselage intersection bracing Glue fin fuselage Add scrap balsa bracing between fin stabilizer intersection round off shown view C-C Add rudder fin trailing edge offset ide flying circle Make tail wheel gear %rin-dia wire Bend gear shown position /-in ply support drill holes Attach gear nylon thread gluing liberally dry glue unit place bottom fuselage cut out Add scrap balsa wheel fairings Make main gear %2-in-dia wtre shown Make gear fairings A-in ply tach nylon gear clips Attach gear assem blies 1-in ply supports bottom wing nylon gear clips Finishing color scheme silver overall medium blue trim Make lettering signia MonoKote Make canopy thin plastic epoxy fuselage Outline canopy strips black MonoKote aileron flap outlines also made black MonoKote Final assembly Glue wing fuselage Make air scoop hollowed-out balsa block glue bottom wing Add balsa exhaust stacks both sides forward fuselage Pass lead-out wires through wing tip line guide tie off Attach nylon control horn elevator Hook up pushrod Attach 3-in-dia wheels main gear 1 -in -dia wheel tail gear tach 12 x 6 prop 3-in spinner en gine sure balance Mustang centerof-gravity shown plans Youre ready take flying field see yourself rugged lightweight plane Continued page 168 I U U P U p p I P U U P p U P U U Superior Igniters Improve starting idle acceleration Youll notice power bargain fuels Special Detergents Promote clean burning prevent residue buildup Rust Inhibitors Protect engines corrosion After run oil needed engines Film Strength Additives Increase lubricity provide extra lean run protection 1 E * 1* 1 P P U U P THE CHOICE OF CHAMPION FLYERS HFor over 20 years SIG has blending finest quality model engine fuel available using finest quality ingredients instance Methanol use 995% pure thevery best grade money can buy also use real 100% pure UNitromethane get full measure youve paid based honest percentage-of-volume method percentage weight SIG fuels con tain 50-50 blend Bakers purest AA Castor Oil Inew improved Klotz Techniplate Synthetic Racing Oil maximum engine lubrication protection Based experience sincerely believe finest quality fuel can made price dont take word try some judge UyourselfPrices s,5jee oSange withOOt nOtice See dealer first available order direct Call 800-247-5008 toll free orders Latest Catalog $300 SIG MANUFACTURING CO Montezuma IA 50171 .EEEEUEEEEEUUUE U I U U U P P P Anti-Wear Additives Help keep engines running peak performance longer Satisfaction Guaranteed FREE SHIPPING ON ORDERS OVER $1500 SIG CHAMPION 2-STROKE FUEL PINT QUART 0% Nitromthane 5% Nitromethane $365$525 10% Nitromethane $415$550 15% Nitromethane $430$635 25% Nitromethatie $5 15$795 35% Nitromethane $595 $925 SIG PREMIUM 4-STROKE 10% Nitromethane 15% Nitromethane GALLON $1075 $1275 $1475 $1675 $2195 $2695 FUEL $1425 $1625 I U U I i P U U U U U U U U U U U U U mE ERR Em EKE EU U U EU Far poap~ t Up ELZ UP 5helt8I Z UP1 BhSI~ futlV NO Iaa5 urdY 0strUG~ 006,turpOIS tubS, trP 0erN e aIrcraft partS NO rap05 tuabte miflur * full afl V8 Rod n OP sturdy feds~gNUYOfl 361 ~ Jo P Leisure rO Ltd v~973.517B September 1989 167 THE BEST FUSELAGE JIG EVER PERIOD Provides Solid Support Accurate Building Rugged Construction 7 Ply Aircraft Plywood Provides Ufetime Use Two Sizes Available Regular Fuselages Up 6/ Wide Jumbo Fuselages Up 9 Wide Use Own Building Board Work Bench Base Mount Jig Station Uni-Strut Guide Rails Most Versatile Set-Up Contains Complete Hardware Instructions Including Uni-Strut Information Boxof4StandardJigStations$1795 Boa 4 Jumbo Jig Stations1995 TwoS ft long Guide Rails including mounting nuts 2195 have comments suggestions questions concerning cardboard P-5 1 please write following address Chuck Fel ton 19009 Laurel Park Rd Space 86 Compton CA 90220 CL Aerobatics/Fancher Continued page 70 black using 1 -in-high Clarendon Bold type capitals name slanted 250 ward AMA number slanted 250 back ward Four working days later appliques arrived mail hour after plane ready clear coating Application simple sounds went out hitch looked magnificent Just see photo yourself Since pictures taken Ive clear-coated ship using K&B SuperPoxy absolutely no adverse affect numbers however plan doping over advised unless applied cautiously dope will cause letters curdle Clear dope must sprayed several very light dry coats prevent spray rig allows vary amount liquid use method apply mist coats using spray cans spray first several coats light fast about 18 away paint nearly dry hits letters After four five coats like nor mal coats may applied entire ship Just cautious load lettered area down wet dope may soften earlier coats cost $575 set about 15% $48 Letraset would have cost Try think youll like IVANS MAGIC GADGET protractor device used Ivan Kristensen accurately measure aileron elevator rudder throw Takes Jess work out trimming out airplane quality tool complete instructionslog book carrying case$795 PLUG-IN ADJUSTABLE STAB KIT last can optimize stab incidence best flight charac teristics pair glass filled nylon adjusters included provide micro screw adjustment smaller front tube Main tube aluminum matching phenolic socket 5695 Include $2 SO/Item UPS esidents Add 6% Sales Tax GATOR RIC PRODUCTS 3713 Pompano Dr acola FL 32514 476-8639 Speaking finishing lets talk bit about frustration suffered result finishing process new Temptation Im going talk about what Mike Keville referred F word letter subject other day What F-word ask Through tightly clenched teeth whisper fillets rable embarrassing area fuselage mates wings tails exotic sensu ous curved area everyone looks air plane likes caress search telltale blem ishes discover symptoms such ma lignancy like impale evil grin say pleasantly little trouble Fs didnt Little Did say little bit trouble Would call having Mt St Helens erupt backyard little bit trouble Would believe name Temptation came temptations considered having untimely demise inanimate timeand-money sponge Let tell about lit tle bit trouble pertains F-word number years have using Sig Epoxolite fillets Stunt ships exceptional product extremely strong reasonable weight can shaped nearly final dimensions finger dampened water before cures lot nice things say about Epoxolite takes well being covered paint word has written about need take extra precautions painting over Heres successfully cover fillet between two sur faces angles another im perative paint adhere aggressively fillet itself Because paints shrink age will tend pull away areas PLUG-IN WING ADJUSTER KIT Four glass filled nylon brackets included key wing panels front rear allow accurately adjust panel straight flight Complete hardware & instructions5995 WING TUBE & SOCKETS Aluminum alloy tubing plug-in wings Included pair special slip-fit phenolic sockets build wing structure Now size models 7/8diax2$ 895 1diax2S 995 1diax3S1495 poorly attached adjoining surfaces significant angles another paint adheres tightly fuselage wingbut filletit will leave flat bub bled areas has pulled away smoothly radiused fillet Because flat bub bles become reflecting surfaces ex tremely noticeable severely degrade ap pearance otherwise attractive airplane Because Stunt fliers historically use butyrate type dopes covering basic filler-coating because butyrate doesnt stick well Epoxo lite have devise ways get finish adhere has found both Aero Gloss nitrate clears will adhere Epoxolite much aggressively will butyrates Ex pert craftsmen will therefore apply two three coats former over bare Epoxolite prime subsequent finishing coats butyrate approach has proven generally suc cessful important remember Aero Gloss nitrate dopes must used top butyrate paints will lift butyrate Butyrate can applied top either however Well done using nitrate sealer proceeding all-dope finish entire ship painted white first rash developed Numerous bubbles appeared over upper fillets Dont ask bot toms still looked pretty good Attempts re adhere paint proved futile always finally gave up stripped paint away clear down Epoxolite Thinking perhaps hadnt allowed fil let cure properly decided insulate paint covering entire filleted areas fairly thick layer Model Magic Filler water-based material very light sands Continued page ifl MINI-ELECTRIC 168 Model Aviation MINI POWER AT ITS BEST LIGHT WEIGHT K CHARGE T MOTCRJPR HY-70VI-ill 7 1 gesr rest Ni Includes HY-7t B Wheeling 19 grams wi Connecler end Acces HY-lUB Same HY-71J Discennecle Slide HY7O HY70R INSTANTSTART OST L CL SISiOS ighI 8elleries itchy ReiiItes $3795 ny VL FhighI 8attitry VL Field box