ike its full-scale counterpart PT-19 model rugged dependable trainer model constructed primarily /8-inch corrugated cardboard greatly reduces building time cost wing built two large pieces cardboard cardboard ribs single spar tail surfaces fuselage primarily cardboard little internal bracing result low-cost lightweight fast-building model has good Scalelike appearance can take plenty punishment flying field model built scaie 1 inch equals 12 feet 60-inch wingspan 46-inch length Engines 40 50 size can used airfoil flat-bottomed curved upper surface due scoring folding technique employed Its size stability make good sport-flying model Fafrchild PT-19 popular subject Scale models rightly since PT-19 instrumental training World War II fighter pilots Fairchild Aircraft Division Hagerstown Maryland developed aircraft 1938 fill need rugged dependable monoplane military primary trainer initial submission aircraft Army Air Corps 1938 resulted order 270 airplanes Cornell series included PT-19 PT-23 PT-26 variations perhaps widely used Allied monoplane trainer before during WW II 7700 produced CONSTRUCTION Before begin take look special tips working cardboard Cardboard varies weight /8-inch corrugated cardboard 50 Model Aviation Sources material include box manufacturers local shopping centers can find stacks discarded boxes Look cardboard brown paper side white finished paper other placing white paper outside model results smoother finish neater appearance Water-based glue such white glue Titebond recommended Contact cement recommended since parts cannot shifted gluing surfaces Scoring fold lines done screening tool available hardware store consists handle l/2-inch-radius wheel end run along straightedge fold line Waterproofing cardboard quite simple can done raw material before cut out parts Mix 25% clear polyurethane 75% paint thinner cheapest hardware-store variety brush mixture liberally onto cardboard sheet allow dry 48 hours adds no appreciable weight material renders cardboard waterproof will cut sharply cleanly Cardboard gives solid surface no open areas cover non-porous easiest finishing method give two coats clear dope sanding lightly between coats #400 sandpaper followed three coats color dope However wide variety finishing materials may used cardboard Coverings such Solarfilm MonoKote vinyl paper can used best bonding predope surfaces using materials seams joints exposed edges covered strips gummed paper tape Obtain one-inch-wide roll stationery store cut thin strips length dip water smooth over seams Cut out cardboard wood parts using template outlines sure note direction corrugations Score fold cardboard parts indicated plans Empennage fin rudder stabilizer elevator made two pieces 1/ cardboard laminated crossgrain give 1/4 surfaces Add /8 x /4 balsa strip fin leading edge round off Add x 1/4 balsa stabilizer leading trailing edges round off Glue elevators 1/4 dowel Add 1/g x /4 inch balsa remainder elevator leading edge round off Seal raw edges gummed paper tape Hinge elevators stabilizer cloth hinges four places Wing Make spar capping 1/4 balsa spar half 1/4 square spruce strips top bottom Join spar halves 1/ plywood joiners front rear centerline Glue 1/ plywood gear mount wing panel Glue right side wing spar onto right wing panel Glue cardboard ribs Wi through W9 right wing Add cardboard doubler over gear mount between W3 W4 Glue one-ounce weight right wingtip Glue left wing panel left spar similar fashion Add ribs gear doubler left wing Apply glue top wing spar top ribs trailing edge Fold top wing surface down pin securely until dry Glue balsa tips wing Make line guide /s plywood Cut slot left wingtip glue line guide place Cover trailing edge seams gummed paper tape Fuselage sides outlined triangular symbols plans Line upper lower edges fuselage side / x 1/4 balsa strips recessed 1/8 inch fuselage edges Bevel strips aft end fuselage cardboard sides will come together Add cardboard supports fuselage side above fuel tank below bellcrank Make firewall Cl /4 plywood Locate mounting holes KIVI-40 engine mount face Cl Drill mounting holes install blind nuts back side Drill hole Cl fuel tubing exit Line four back edges Cl 1/2 triangular balsa bracing Glue Cl right side fuselage dry attach left side fuselage Cl Attach fuel tank /8 plywood support fuel tank may attached support rubber bands Make pushrod /32 wire 1/4 square spruce attach bellcrank along leadout wires Install tank July1995 51 Wing has single spar cardboard ribs leading edge folds curved upper surface Gear mount insert 1/8 plywood Fuselage sides lined balsa strips have cardboard supports bellcrank fuel tank mounting Fuselage sides joined firewall fuel tank bellcrank installed Firewall back face edged triangular balsa belicrank assemblies gluing plywood supports cardboard supports fuselage sides Glue fuselage sides together tail glue Fl F2 place cover top fuselage sure bring fuel tubing fill overflow lines out during covering operations Cover bottom fuselage F3 F4 F5 Add bulkheads through F top fuselage adding /8 X 1/4 stringers down center Cover bulkheads through F top decking pieces Dl D2 D3 have scored folded Add three G bulkheads stringer forward bottom fuselage cover D4 cowl built up /2 balsa sheet sanded hollowed out shown top side views Maple blocks already drilled blind nuts installed epoxied Cl Add 1/8 plywood pieces inside cowl sides line maple blocks 4-40 bolt used attach cowl Use prop shaft extension give adequate spinner clearance Cut holes cowl block cylinder head exhaust needle valve Glue horizontal stabilizer fuselage Add triangular balsa bottom stabilizer bracingGlue fin fuselage Add scrap balsa bracing between fin stabilizer intersection round off shown view C-C Add rudder fin trailing edge offset 1/2 inch outside flying circle Make tail wheel gear I32 wire Bend shown place /8 plywood support wrap nylon thread smear glue dry glue place bottom fuselage cutout Make main gear 5/33 wire Slip black fuel tubing over wire simulate gear struts Attach gear assemblies supports bottom wing nylon gear clips Finish Paint trim model before final assembly color scheme yellow wing horizontal stabilizer dark blue fuselage fin red white stripes rudder lettering insignia made MonoKote Make canopies thin plastic epoxy fuselage Make cockpit combing black fuel tubing split lengthwise Outline canopy strips black MonoKote aileron outlines also made black MonoKote Final assembly Glue wing fuselage Pass leadout wires through wingtip line guide tie off Attach nylon control horn elevator hook up pushrod Attach 33/4 diameter wheels main gear l/4 wheel tail gear Attach 11 x 6 prop engine balance model point shown plans P1-19 complete have comments suggestions questions concerning Main gear mounted 1/8 plywood insert nylon gear clips cardboard P1-19 please write Slip fuel tubing over gear wire simulate strut Chuck Fe/ton 19009 Laurel Park Road Space 86 Compton CA 90220 nnage LEs capped 11e balsa rounded off Tailwheel wire attached platform nylon thread Note triangular balsa brace between stab fuselage 52 Model Aviation ne compartment showing KM 40 mount shaft extension maple blocks used cowl attachment Type CL Sport Wingspan 60 inches Engine 40 glow Flying weight 48 ounces approx Construction Cardboard/balsa Covering/finish Dope film
Edition: Model Aviation - 1995/07
Page Numbers: 50, 51, 52
Edition: Model Aviation - 1995/07
Page Numbers: 50, 51, 52
ike its full-scale counterpart PT-19 model rugged dependable trainer model constructed primarily /8-inch corrugated cardboard greatly reduces building time cost wing built two large pieces cardboard cardboard ribs single spar tail surfaces fuselage primarily cardboard little internal bracing result low-cost lightweight fast-building model has good Scalelike appearance can take plenty punishment flying field model built scaie 1 inch equals 12 feet 60-inch wingspan 46-inch length Engines 40 50 size can used airfoil flat-bottomed curved upper surface due scoring folding technique employed Its size stability make good sport-flying model Fafrchild PT-19 popular subject Scale models rightly since PT-19 instrumental training World War II fighter pilots Fairchild Aircraft Division Hagerstown Maryland developed aircraft 1938 fill need rugged dependable monoplane military primary trainer initial submission aircraft Army Air Corps 1938 resulted order 270 airplanes Cornell series included PT-19 PT-23 PT-26 variations perhaps widely used Allied monoplane trainer before during WW II 7700 produced CONSTRUCTION Before begin take look special tips working cardboard Cardboard varies weight /8-inch corrugated cardboard 50 Model Aviation Sources material include box manufacturers local shopping centers can find stacks discarded boxes Look cardboard brown paper side white finished paper other placing white paper outside model results smoother finish neater appearance Water-based glue such white glue Titebond recommended Contact cement recommended since parts cannot shifted gluing surfaces Scoring fold lines done screening tool available hardware store consists handle l/2-inch-radius wheel end run along straightedge fold line Waterproofing cardboard quite simple can done raw material before cut out parts Mix 25% clear polyurethane 75% paint thinner cheapest hardware-store variety brush mixture liberally onto cardboard sheet allow dry 48 hours adds no appreciable weight material renders cardboard waterproof will cut sharply cleanly Cardboard gives solid surface no open areas cover non-porous easiest finishing method give two coats clear dope sanding lightly between coats #400 sandpaper followed three coats color dope However wide variety finishing materials may used cardboard Coverings such Solarfilm MonoKote vinyl paper can used best bonding predope surfaces using materials seams joints exposed edges covered strips gummed paper tape Obtain one-inch-wide roll stationery store cut thin strips length dip water smooth over seams Cut out cardboard wood parts using template outlines sure note direction corrugations Score fold cardboard parts indicated plans Empennage fin rudder stabilizer elevator made two pieces 1/ cardboard laminated crossgrain give 1/4 surfaces Add /8 x /4 balsa strip fin leading edge round off Add x 1/4 balsa stabilizer leading trailing edges round off Glue elevators 1/4 dowel Add 1/g x /4 inch balsa remainder elevator leading edge round off Seal raw edges gummed paper tape Hinge elevators stabilizer cloth hinges four places Wing Make spar capping 1/4 balsa spar half 1/4 square spruce strips top bottom Join spar halves 1/ plywood joiners front rear centerline Glue 1/ plywood gear mount wing panel Glue right side wing spar onto right wing panel Glue cardboard ribs Wi through W9 right wing Add cardboard doubler over gear mount between W3 W4 Glue one-ounce weight right wingtip Glue left wing panel left spar similar fashion Add ribs gear doubler left wing Apply glue top wing spar top ribs trailing edge Fold top wing surface down pin securely until dry Glue balsa tips wing Make line guide /s plywood Cut slot left wingtip glue line guide place Cover trailing edge seams gummed paper tape Fuselage sides outlined triangular symbols plans Line upper lower edges fuselage side / x 1/4 balsa strips recessed 1/8 inch fuselage edges Bevel strips aft end fuselage cardboard sides will come together Add cardboard supports fuselage side above fuel tank below bellcrank Make firewall Cl /4 plywood Locate mounting holes KIVI-40 engine mount face Cl Drill mounting holes install blind nuts back side Drill hole Cl fuel tubing exit Line four back edges Cl 1/2 triangular balsa bracing Glue Cl right side fuselage dry attach left side fuselage Cl Attach fuel tank /8 plywood support fuel tank may attached support rubber bands Make pushrod /32 wire 1/4 square spruce attach bellcrank along leadout wires Install tank July1995 51 Wing has single spar cardboard ribs leading edge folds curved upper surface Gear mount insert 1/8 plywood Fuselage sides lined balsa strips have cardboard supports bellcrank fuel tank mounting Fuselage sides joined firewall fuel tank bellcrank installed Firewall back face edged triangular balsa belicrank assemblies gluing plywood supports cardboard supports fuselage sides Glue fuselage sides together tail glue Fl F2 place cover top fuselage sure bring fuel tubing fill overflow lines out during covering operations Cover bottom fuselage F3 F4 F5 Add bulkheads through F top fuselage adding /8 X 1/4 stringers down center Cover bulkheads through F top decking pieces Dl D2 D3 have scored folded Add three G bulkheads stringer forward bottom fuselage cover D4 cowl built up /2 balsa sheet sanded hollowed out shown top side views Maple blocks already drilled blind nuts installed epoxied Cl Add 1/8 plywood pieces inside cowl sides line maple blocks 4-40 bolt used attach cowl Use prop shaft extension give adequate spinner clearance Cut holes cowl block cylinder head exhaust needle valve Glue horizontal stabilizer fuselage Add triangular balsa bottom stabilizer bracingGlue fin fuselage Add scrap balsa bracing between fin stabilizer intersection round off shown view C-C Add rudder fin trailing edge offset 1/2 inch outside flying circle Make tail wheel gear I32 wire Bend shown place /8 plywood support wrap nylon thread smear glue dry glue place bottom fuselage cutout Make main gear 5/33 wire Slip black fuel tubing over wire simulate gear struts Attach gear assemblies supports bottom wing nylon gear clips Finish Paint trim model before final assembly color scheme yellow wing horizontal stabilizer dark blue fuselage fin red white stripes rudder lettering insignia made MonoKote Make canopies thin plastic epoxy fuselage Make cockpit combing black fuel tubing split lengthwise Outline canopy strips black MonoKote aileron outlines also made black MonoKote Final assembly Glue wing fuselage Pass leadout wires through wingtip line guide tie off Attach nylon control horn elevator hook up pushrod Attach 33/4 diameter wheels main gear l/4 wheel tail gear Attach 11 x 6 prop engine balance model point shown plans P1-19 complete have comments suggestions questions concerning Main gear mounted 1/8 plywood insert nylon gear clips cardboard P1-19 please write Slip fuel tubing over gear wire simulate strut Chuck Fe/ton 19009 Laurel Park Road Space 86 Compton CA 90220 nnage LEs capped 11e balsa rounded off Tailwheel wire attached platform nylon thread Note triangular balsa brace between stab fuselage 52 Model Aviation ne compartment showing KM 40 mount shaft extension maple blocks used cowl attachment Type CL Sport Wingspan 60 inches Engine 40 glow Flying weight 48 ounces approx Construction Cardboard/balsa Covering/finish Dope film
Edition: Model Aviation - 1995/07
Page Numbers: 50, 51, 52
ike its full-scale counterpart PT-19 model rugged dependable trainer model constructed primarily /8-inch corrugated cardboard greatly reduces building time cost wing built two large pieces cardboard cardboard ribs single spar tail surfaces fuselage primarily cardboard little internal bracing result low-cost lightweight fast-building model has good Scalelike appearance can take plenty punishment flying field model built scaie 1 inch equals 12 feet 60-inch wingspan 46-inch length Engines 40 50 size can used airfoil flat-bottomed curved upper surface due scoring folding technique employed Its size stability make good sport-flying model Fafrchild PT-19 popular subject Scale models rightly since PT-19 instrumental training World War II fighter pilots Fairchild Aircraft Division Hagerstown Maryland developed aircraft 1938 fill need rugged dependable monoplane military primary trainer initial submission aircraft Army Air Corps 1938 resulted order 270 airplanes Cornell series included PT-19 PT-23 PT-26 variations perhaps widely used Allied monoplane trainer before during WW II 7700 produced CONSTRUCTION Before begin take look special tips working cardboard Cardboard varies weight /8-inch corrugated cardboard 50 Model Aviation Sources material include box manufacturers local shopping centers can find stacks discarded boxes Look cardboard brown paper side white finished paper other placing white paper outside model results smoother finish neater appearance Water-based glue such white glue Titebond recommended Contact cement recommended since parts cannot shifted gluing surfaces Scoring fold lines done screening tool available hardware store consists handle l/2-inch-radius wheel end run along straightedge fold line Waterproofing cardboard quite simple can done raw material before cut out parts Mix 25% clear polyurethane 75% paint thinner cheapest hardware-store variety brush mixture liberally onto cardboard sheet allow dry 48 hours adds no appreciable weight material renders cardboard waterproof will cut sharply cleanly Cardboard gives solid surface no open areas cover non-porous easiest finishing method give two coats clear dope sanding lightly between coats #400 sandpaper followed three coats color dope However wide variety finishing materials may used cardboard Coverings such Solarfilm MonoKote vinyl paper can used best bonding predope surfaces using materials seams joints exposed edges covered strips gummed paper tape Obtain one-inch-wide roll stationery store cut thin strips length dip water smooth over seams Cut out cardboard wood parts using template outlines sure note direction corrugations Score fold cardboard parts indicated plans Empennage fin rudder stabilizer elevator made two pieces 1/ cardboard laminated crossgrain give 1/4 surfaces Add /8 x /4 balsa strip fin leading edge round off Add x 1/4 balsa stabilizer leading trailing edges round off Glue elevators 1/4 dowel Add 1/g x /4 inch balsa remainder elevator leading edge round off Seal raw edges gummed paper tape Hinge elevators stabilizer cloth hinges four places Wing Make spar capping 1/4 balsa spar half 1/4 square spruce strips top bottom Join spar halves 1/ plywood joiners front rear centerline Glue 1/ plywood gear mount wing panel Glue right side wing spar onto right wing panel Glue cardboard ribs Wi through W9 right wing Add cardboard doubler over gear mount between W3 W4 Glue one-ounce weight right wingtip Glue left wing panel left spar similar fashion Add ribs gear doubler left wing Apply glue top wing spar top ribs trailing edge Fold top wing surface down pin securely until dry Glue balsa tips wing Make line guide /s plywood Cut slot left wingtip glue line guide place Cover trailing edge seams gummed paper tape Fuselage sides outlined triangular symbols plans Line upper lower edges fuselage side / x 1/4 balsa strips recessed 1/8 inch fuselage edges Bevel strips aft end fuselage cardboard sides will come together Add cardboard supports fuselage side above fuel tank below bellcrank Make firewall Cl /4 plywood Locate mounting holes KIVI-40 engine mount face Cl Drill mounting holes install blind nuts back side Drill hole Cl fuel tubing exit Line four back edges Cl 1/2 triangular balsa bracing Glue Cl right side fuselage dry attach left side fuselage Cl Attach fuel tank /8 plywood support fuel tank may attached support rubber bands Make pushrod /32 wire 1/4 square spruce attach bellcrank along leadout wires Install tank July1995 51 Wing has single spar cardboard ribs leading edge folds curved upper surface Gear mount insert 1/8 plywood Fuselage sides lined balsa strips have cardboard supports bellcrank fuel tank mounting Fuselage sides joined firewall fuel tank bellcrank installed Firewall back face edged triangular balsa belicrank assemblies gluing plywood supports cardboard supports fuselage sides Glue fuselage sides together tail glue Fl F2 place cover top fuselage sure bring fuel tubing fill overflow lines out during covering operations Cover bottom fuselage F3 F4 F5 Add bulkheads through F top fuselage adding /8 X 1/4 stringers down center Cover bulkheads through F top decking pieces Dl D2 D3 have scored folded Add three G bulkheads stringer forward bottom fuselage cover D4 cowl built up /2 balsa sheet sanded hollowed out shown top side views Maple blocks already drilled blind nuts installed epoxied Cl Add 1/8 plywood pieces inside cowl sides line maple blocks 4-40 bolt used attach cowl Use prop shaft extension give adequate spinner clearance Cut holes cowl block cylinder head exhaust needle valve Glue horizontal stabilizer fuselage Add triangular balsa bottom stabilizer bracingGlue fin fuselage Add scrap balsa bracing between fin stabilizer intersection round off shown view C-C Add rudder fin trailing edge offset 1/2 inch outside flying circle Make tail wheel gear I32 wire Bend shown place /8 plywood support wrap nylon thread smear glue dry glue place bottom fuselage cutout Make main gear 5/33 wire Slip black fuel tubing over wire simulate gear struts Attach gear assemblies supports bottom wing nylon gear clips Finish Paint trim model before final assembly color scheme yellow wing horizontal stabilizer dark blue fuselage fin red white stripes rudder lettering insignia made MonoKote Make canopies thin plastic epoxy fuselage Make cockpit combing black fuel tubing split lengthwise Outline canopy strips black MonoKote aileron outlines also made black MonoKote Final assembly Glue wing fuselage Pass leadout wires through wingtip line guide tie off Attach nylon control horn elevator hook up pushrod Attach 33/4 diameter wheels main gear l/4 wheel tail gear Attach 11 x 6 prop engine balance model point shown plans P1-19 complete have comments suggestions questions concerning Main gear mounted 1/8 plywood insert nylon gear clips cardboard P1-19 please write Slip fuel tubing over gear wire simulate strut Chuck Fe/ton 19009 Laurel Park Road Space 86 Compton CA 90220 nnage LEs capped 11e balsa rounded off Tailwheel wire attached platform nylon thread Note triangular balsa brace between stab fuselage 52 Model Aviation ne compartment showing KM 40 mount shaft extension maple blocks used cowl attachment Type CL Sport Wingspan 60 inches Engine 40 glow Flying weight 48 ounces approx Construction Cardboard/balsa Covering/finish Dope film
