So Lou U Harry Murphy Can Goldbergs Zipper other pylon models revolutionizing gas-powered free flight time 1940 Chicago Nationals However least two new cabin designs would slow pylons eventual domination both products since-disbanded Chicago Buzzards club design Joe Konefes Buzzard Bombshell won Class C Open event other Bill Englehardts Ohlsson 23 sideport 50-inch So Long posted three consecutive sevenminute flights win Class B Open triumphs created renewed respect cabin-type models both designs subsequently kitted Aircraft Model Company Chicago Soon after 1940 Nats Bill Englehardt lost original 50-inch model faced task building replacement time chose build slightly larger version around new Forster 29 new model very similiar appearance its predecessor wingspan being extended 54 inches Its common knowledge Bill Englehardt followed original 50-inch So Long larger model since beginning SAM Society Antique Modelers Old-Timer movement has generally accepted difference between two versions addition two-inch sections inner panels wing Winner Class B 1940 Nationals now doe umen ted Old-Timer use 60 Model Aviation 4but forgotten surely have aware other differences no contested assumption wing extension discrepancy until Bob Larsh showed up at club meeting Central Indiana Aeromodellers early 1980s Englehardts original Forster 29 version seems Bills second effort hung display Chicago hobby shop war years until advent Old-Timer movement urgings some local Old-Timer enthusiasts model reactivated flight after some additional contest years retired once again Englehardt s model now very tired will probably never again float warm thermal air rather will likely condemned some musty basement stifling attic until eventually destroyed thought should take opportunity formalize its existence posterity preparing accurate drawing actual model publishing projectthus offsetting previous subsequent suppositions about design Comparing 54-inch model 50-inch size Air Trails January 1941 well original kit plans did take long conclude larger version definitely pure proportionally-blown derivative 50-inch size fact although standoff appearance deteriorating model strikingly So Long dimensionally different wing four inches longer chord slightly wider wingtip outline considerably different 50-inch kit model obvious visual difference substantially enlarged stabilizer other dimensional differences indicated designer may have felt 50-inch version somewhat lacking department fact apparently overlooked previous word-of-mouth descriptions So Long 54 fuselage little over 1 /2 inches longer although appeared quite similar side view actual side view outline no way proportionate original seemed designer may have lacking simple drafting skills proportionally enlarge model simply chose take standoff approach using rubber ruler instead Although model designed encompass Forster 29 found actual engine compartment very snug fit subject engine As see slanted venturi tube would requirement however also feasible assume some revisions engine mount area could have made subsequent possessors actual model also indications model may have flown glow plug engine rate else would indicate original construction intact Forsters originally produced slant-type intakes longer flared-tube intakes came later did metal fuel tanks ball- bearing versions Other some differences wood sizes construction 54-inch model seems nearly identical kitted 50-inch size let us begin discussing wing may need have balsa stripper handy couple strip items nonstandard such main spar tapered trailing edge thought builder old model used standard trailingedge stock could have made A6 narrower sanding recovering job since 50-inch model also called nonstandard strip taper carved decided just record what could see hold back suppositions Maybe standard tapered trailing edge stock available 1940 Whatever. Anyway front TE gets jacked up 1/32 pinned plans building board main spar other nonstandard item balsa stripper comes handy too spar pinned place after trimmed proper polyhedral angle would attempt add rear spar until wing assembly removed plans since pinned directly plans flush rib undercamber Wingtip parts cut -inch sheet Fabricate directly over plans remove trim properly fit 3A6-square LE fit snugly slots ribs W2 W3 wing ribs 146 sheet cemented place after main spar TE pinned plans prefabricated tip outlines assembled next finally 3A6-square LE Upon removal panel sections plans rear spar can assembled Wing sections may now joined tipto-inner-panels first making sure 211/16 polyhedral angle honored followed two wing halves 2 inches dihedral measured polyhedral joints Cut proper notches bottom centerline rib receive dihedral braces WA WB complete wing assembly cementing appropriate gussets place Its now time some sandpaper elbow grease selection appropriate covering material regard overall wing construction relatively weak recommend silk sturdy silkspan nitrate-dope finish Films usually add little towards rigidity pass up model horizontal stabilizer uses construction 50-inch model noticeably larger wood sizes A6 sheet square its just matter cutting out contoured parts cementing together over plans vertical fin fabricated similarly note 146 sheet soft aluminum trim tab Once again sandpaper covering-selection time fuselage built upsidedown over top view plans Construct 3/16-square longitudinal thrustline crutch add fabricated two-piece bottom wishbone formers FE through FJ turu built over plans fabricated formers glued together using good cyanocrylate CyA should retain assembled shape quite well until cemented place crutch also applies three-piece rectangular formers FC FD Note FC incorporates ood landing gear mounting plate formed /32 diameter LG should securely bound l/ plywood plate drilling holes alongside wire number locations securing strong fishline cement 3A6-square bottom keel now added across peaks triangularshaped formers toward rear forward bottom 146 plywood locates between FA FE soaked properly cut bottom plywood sheet warm water couple hours formed around sides large bucket get rocker-shaped piece comply pretty well desired curvature wrapped old belt around bucket retain plywood used heat gun thoroughly dry January1994 61 Mitch Post left built 54-inch So Long some ten years ago Bill Hale right holds 50-inch version Full-Size Plans Available-See Page 168 WING PLAN TOP T 1ii -WA WING SPANS DIHEDRAL DETAIL JL WS W 8 preforming effort greatly facilitated assembly stiff plywood sheet its proper location assembly can now removed plans top portion former station may cemented place followed 3A6square backbone atop formers between stations FE FJ Next add wing saddle proper dihedral angle built /s plywood firewall FA next LG former reinforcement doublers 1/g sheet can follow Dont forget vertical strips /16 square span space between keel backbone stations FF through FJ Add instrument panel former FB wing hooks assemble hardwood motor mounts through slots FA noting 1 downthrust should now have rather sturdy skeleton ready mount engine add ignition paraphernalia ultimately add 1/16 sheet balsa skin suggest coil timer wiring installed pointsans battery locationthen plank bottom half fuselage complete engine cowling area may wish temporarily assembly engine prop wheels completed stab ISTAILIZER FUSELAGE TOP VIEW WINS SADDLE TEMPLATE, RUDDER h-II IA--rn______________ FUSELAGE SIDE VIEW RAPNDI ROTTOM DETAILBOTTOM B/C SO LONG 54 determine approximate location flight batteries model balance 50% wing chord Once battery location established top half fuselage can planked battery-hatch provisions being incorporated Sand fuselage smooth finish adding 1A6 sheet balsa stab platform celluloid windscreens Seal balsa skin sanding sealer add appropriate number coats nitrate dope cover original 54-inch So Long tired-looking silk silkspan photos taken over decade ago Note vintage deflated M&M air wheelsRecommended flight pattern _____________________________________________is right climb right-hand _____________________________________________ glide expect So Long 54 respond under power squirrelly climb 50-inch size larger stab makes model orthodox behavior under power stable glide printing another oldie properly documented reincarnated thank Bob Larsh Milt Burley late Louie Levine others helped preserve actual model until design could forever preserved hope article will lay rest mysteries suppositions regarding fabled Englehardt B/C So Long Better yet may now enjoy once again odel Aviation pe FF Old-Timer Wingspan 54 inches Engine size/type Forster 29 ignition Flying weight 8 ozIsq ft wing area projected Construction Built-up Covering/finish Silk silkspan/ nitrate dope
Edition: Model Aviation - 1994/01
Page Numbers: 60, 61, 62
So Lou U Harry Murphy Can Goldbergs Zipper other pylon models revolutionizing gas-powered free flight time 1940 Chicago Nationals However least two new cabin designs would slow pylons eventual domination both products since-disbanded Chicago Buzzards club design Joe Konefes Buzzard Bombshell won Class C Open event other Bill Englehardts Ohlsson 23 sideport 50-inch So Long posted three consecutive sevenminute flights win Class B Open triumphs created renewed respect cabin-type models both designs subsequently kitted Aircraft Model Company Chicago Soon after 1940 Nats Bill Englehardt lost original 50-inch model faced task building replacement time chose build slightly larger version around new Forster 29 new model very similiar appearance its predecessor wingspan being extended 54 inches Its common knowledge Bill Englehardt followed original 50-inch So Long larger model since beginning SAM Society Antique Modelers Old-Timer movement has generally accepted difference between two versions addition two-inch sections inner panels wing Winner Class B 1940 Nationals now doe umen ted Old-Timer use 60 Model Aviation 4but forgotten surely have aware other differences no contested assumption wing extension discrepancy until Bob Larsh showed up at club meeting Central Indiana Aeromodellers early 1980s Englehardts original Forster 29 version seems Bills second effort hung display Chicago hobby shop war years until advent Old-Timer movement urgings some local Old-Timer enthusiasts model reactivated flight after some additional contest years retired once again Englehardt s model now very tired will probably never again float warm thermal air rather will likely condemned some musty basement stifling attic until eventually destroyed thought should take opportunity formalize its existence posterity preparing accurate drawing actual model publishing projectthus offsetting previous subsequent suppositions about design Comparing 54-inch model 50-inch size Air Trails January 1941 well original kit plans did take long conclude larger version definitely pure proportionally-blown derivative 50-inch size fact although standoff appearance deteriorating model strikingly So Long dimensionally different wing four inches longer chord slightly wider wingtip outline considerably different 50-inch kit model obvious visual difference substantially enlarged stabilizer other dimensional differences indicated designer may have felt 50-inch version somewhat lacking department fact apparently overlooked previous word-of-mouth descriptions So Long 54 fuselage little over 1 /2 inches longer although appeared quite similar side view actual side view outline no way proportionate original seemed designer may have lacking simple drafting skills proportionally enlarge model simply chose take standoff approach using rubber ruler instead Although model designed encompass Forster 29 found actual engine compartment very snug fit subject engine As see slanted venturi tube would requirement however also feasible assume some revisions engine mount area could have made subsequent possessors actual model also indications model may have flown glow plug engine rate else would indicate original construction intact Forsters originally produced slant-type intakes longer flared-tube intakes came later did metal fuel tanks ball- bearing versions Other some differences wood sizes construction 54-inch model seems nearly identical kitted 50-inch size let us begin discussing wing may need have balsa stripper handy couple strip items nonstandard such main spar tapered trailing edge thought builder old model used standard trailingedge stock could have made A6 narrower sanding recovering job since 50-inch model also called nonstandard strip taper carved decided just record what could see hold back suppositions Maybe standard tapered trailing edge stock available 1940 Whatever. Anyway front TE gets jacked up 1/32 pinned plans building board main spar other nonstandard item balsa stripper comes handy too spar pinned place after trimmed proper polyhedral angle would attempt add rear spar until wing assembly removed plans since pinned directly plans flush rib undercamber Wingtip parts cut -inch sheet Fabricate directly over plans remove trim properly fit 3A6-square LE fit snugly slots ribs W2 W3 wing ribs 146 sheet cemented place after main spar TE pinned plans prefabricated tip outlines assembled next finally 3A6-square LE Upon removal panel sections plans rear spar can assembled Wing sections may now joined tipto-inner-panels first making sure 211/16 polyhedral angle honored followed two wing halves 2 inches dihedral measured polyhedral joints Cut proper notches bottom centerline rib receive dihedral braces WA WB complete wing assembly cementing appropriate gussets place Its now time some sandpaper elbow grease selection appropriate covering material regard overall wing construction relatively weak recommend silk sturdy silkspan nitrate-dope finish Films usually add little towards rigidity pass up model horizontal stabilizer uses construction 50-inch model noticeably larger wood sizes A6 sheet square its just matter cutting out contoured parts cementing together over plans vertical fin fabricated similarly note 146 sheet soft aluminum trim tab Once again sandpaper covering-selection time fuselage built upsidedown over top view plans Construct 3/16-square longitudinal thrustline crutch add fabricated two-piece bottom wishbone formers FE through FJ turu built over plans fabricated formers glued together using good cyanocrylate CyA should retain assembled shape quite well until cemented place crutch also applies three-piece rectangular formers FC FD Note FC incorporates ood landing gear mounting plate formed /32 diameter LG should securely bound l/ plywood plate drilling holes alongside wire number locations securing strong fishline cement 3A6-square bottom keel now added across peaks triangularshaped formers toward rear forward bottom 146 plywood locates between FA FE soaked properly cut bottom plywood sheet warm water couple hours formed around sides large bucket get rocker-shaped piece comply pretty well desired curvature wrapped old belt around bucket retain plywood used heat gun thoroughly dry January1994 61 Mitch Post left built 54-inch So Long some ten years ago Bill Hale right holds 50-inch version Full-Size Plans Available-See Page 168 WING PLAN TOP T 1ii -WA WING SPANS DIHEDRAL DETAIL JL WS W 8 preforming effort greatly facilitated assembly stiff plywood sheet its proper location assembly can now removed plans top portion former station may cemented place followed 3A6square backbone atop formers between stations FE FJ Next add wing saddle proper dihedral angle built /s plywood firewall FA next LG former reinforcement doublers 1/g sheet can follow Dont forget vertical strips /16 square span space between keel backbone stations FF through FJ Add instrument panel former FB wing hooks assemble hardwood motor mounts through slots FA noting 1 downthrust should now have rather sturdy skeleton ready mount engine add ignition paraphernalia ultimately add 1/16 sheet balsa skin suggest coil timer wiring installed pointsans battery locationthen plank bottom half fuselage complete engine cowling area may wish temporarily assembly engine prop wheels completed stab ISTAILIZER FUSELAGE TOP VIEW WINS SADDLE TEMPLATE, RUDDER h-II IA--rn______________ FUSELAGE SIDE VIEW RAPNDI ROTTOM DETAILBOTTOM B/C SO LONG 54 determine approximate location flight batteries model balance 50% wing chord Once battery location established top half fuselage can planked battery-hatch provisions being incorporated Sand fuselage smooth finish adding 1A6 sheet balsa stab platform celluloid windscreens Seal balsa skin sanding sealer add appropriate number coats nitrate dope cover original 54-inch So Long tired-looking silk silkspan photos taken over decade ago Note vintage deflated M&M air wheelsRecommended flight pattern _____________________________________________is right climb right-hand _____________________________________________ glide expect So Long 54 respond under power squirrelly climb 50-inch size larger stab makes model orthodox behavior under power stable glide printing another oldie properly documented reincarnated thank Bob Larsh Milt Burley late Louie Levine others helped preserve actual model until design could forever preserved hope article will lay rest mysteries suppositions regarding fabled Englehardt B/C So Long Better yet may now enjoy once again odel Aviation pe FF Old-Timer Wingspan 54 inches Engine size/type Forster 29 ignition Flying weight 8 ozIsq ft wing area projected Construction Built-up Covering/finish Silk silkspan/ nitrate dope
Edition: Model Aviation - 1994/01
Page Numbers: 60, 61, 62
So Lou U Harry Murphy Can Goldbergs Zipper other pylon models revolutionizing gas-powered free flight time 1940 Chicago Nationals However least two new cabin designs would slow pylons eventual domination both products since-disbanded Chicago Buzzards club design Joe Konefes Buzzard Bombshell won Class C Open event other Bill Englehardts Ohlsson 23 sideport 50-inch So Long posted three consecutive sevenminute flights win Class B Open triumphs created renewed respect cabin-type models both designs subsequently kitted Aircraft Model Company Chicago Soon after 1940 Nats Bill Englehardt lost original 50-inch model faced task building replacement time chose build slightly larger version around new Forster 29 new model very similiar appearance its predecessor wingspan being extended 54 inches Its common knowledge Bill Englehardt followed original 50-inch So Long larger model since beginning SAM Society Antique Modelers Old-Timer movement has generally accepted difference between two versions addition two-inch sections inner panels wing Winner Class B 1940 Nationals now doe umen ted Old-Timer use 60 Model Aviation 4but forgotten surely have aware other differences no contested assumption wing extension discrepancy until Bob Larsh showed up at club meeting Central Indiana Aeromodellers early 1980s Englehardts original Forster 29 version seems Bills second effort hung display Chicago hobby shop war years until advent Old-Timer movement urgings some local Old-Timer enthusiasts model reactivated flight after some additional contest years retired once again Englehardt s model now very tired will probably never again float warm thermal air rather will likely condemned some musty basement stifling attic until eventually destroyed thought should take opportunity formalize its existence posterity preparing accurate drawing actual model publishing projectthus offsetting previous subsequent suppositions about design Comparing 54-inch model 50-inch size Air Trails January 1941 well original kit plans did take long conclude larger version definitely pure proportionally-blown derivative 50-inch size fact although standoff appearance deteriorating model strikingly So Long dimensionally different wing four inches longer chord slightly wider wingtip outline considerably different 50-inch kit model obvious visual difference substantially enlarged stabilizer other dimensional differences indicated designer may have felt 50-inch version somewhat lacking department fact apparently overlooked previous word-of-mouth descriptions So Long 54 fuselage little over 1 /2 inches longer although appeared quite similar side view actual side view outline no way proportionate original seemed designer may have lacking simple drafting skills proportionally enlarge model simply chose take standoff approach using rubber ruler instead Although model designed encompass Forster 29 found actual engine compartment very snug fit subject engine As see slanted venturi tube would requirement however also feasible assume some revisions engine mount area could have made subsequent possessors actual model also indications model may have flown glow plug engine rate else would indicate original construction intact Forsters originally produced slant-type intakes longer flared-tube intakes came later did metal fuel tanks ball- bearing versions Other some differences wood sizes construction 54-inch model seems nearly identical kitted 50-inch size let us begin discussing wing may need have balsa stripper handy couple strip items nonstandard such main spar tapered trailing edge thought builder old model used standard trailingedge stock could have made A6 narrower sanding recovering job since 50-inch model also called nonstandard strip taper carved decided just record what could see hold back suppositions Maybe standard tapered trailing edge stock available 1940 Whatever. Anyway front TE gets jacked up 1/32 pinned plans building board main spar other nonstandard item balsa stripper comes handy too spar pinned place after trimmed proper polyhedral angle would attempt add rear spar until wing assembly removed plans since pinned directly plans flush rib undercamber Wingtip parts cut -inch sheet Fabricate directly over plans remove trim properly fit 3A6-square LE fit snugly slots ribs W2 W3 wing ribs 146 sheet cemented place after main spar TE pinned plans prefabricated tip outlines assembled next finally 3A6-square LE Upon removal panel sections plans rear spar can assembled Wing sections may now joined tipto-inner-panels first making sure 211/16 polyhedral angle honored followed two wing halves 2 inches dihedral measured polyhedral joints Cut proper notches bottom centerline rib receive dihedral braces WA WB complete wing assembly cementing appropriate gussets place Its now time some sandpaper elbow grease selection appropriate covering material regard overall wing construction relatively weak recommend silk sturdy silkspan nitrate-dope finish Films usually add little towards rigidity pass up model horizontal stabilizer uses construction 50-inch model noticeably larger wood sizes A6 sheet square its just matter cutting out contoured parts cementing together over plans vertical fin fabricated similarly note 146 sheet soft aluminum trim tab Once again sandpaper covering-selection time fuselage built upsidedown over top view plans Construct 3/16-square longitudinal thrustline crutch add fabricated two-piece bottom wishbone formers FE through FJ turu built over plans fabricated formers glued together using good cyanocrylate CyA should retain assembled shape quite well until cemented place crutch also applies three-piece rectangular formers FC FD Note FC incorporates ood landing gear mounting plate formed /32 diameter LG should securely bound l/ plywood plate drilling holes alongside wire number locations securing strong fishline cement 3A6-square bottom keel now added across peaks triangularshaped formers toward rear forward bottom 146 plywood locates between FA FE soaked properly cut bottom plywood sheet warm water couple hours formed around sides large bucket get rocker-shaped piece comply pretty well desired curvature wrapped old belt around bucket retain plywood used heat gun thoroughly dry January1994 61 Mitch Post left built 54-inch So Long some ten years ago Bill Hale right holds 50-inch version Full-Size Plans Available-See Page 168 WING PLAN TOP T 1ii -WA WING SPANS DIHEDRAL DETAIL JL WS W 8 preforming effort greatly facilitated assembly stiff plywood sheet its proper location assembly can now removed plans top portion former station may cemented place followed 3A6square backbone atop formers between stations FE FJ Next add wing saddle proper dihedral angle built /s plywood firewall FA next LG former reinforcement doublers 1/g sheet can follow Dont forget vertical strips /16 square span space between keel backbone stations FF through FJ Add instrument panel former FB wing hooks assemble hardwood motor mounts through slots FA noting 1 downthrust should now have rather sturdy skeleton ready mount engine add ignition paraphernalia ultimately add 1/16 sheet balsa skin suggest coil timer wiring installed pointsans battery locationthen plank bottom half fuselage complete engine cowling area may wish temporarily assembly engine prop wheels completed stab ISTAILIZER FUSELAGE TOP VIEW WINS SADDLE TEMPLATE, RUDDER h-II IA--rn______________ FUSELAGE SIDE VIEW RAPNDI ROTTOM DETAILBOTTOM B/C SO LONG 54 determine approximate location flight batteries model balance 50% wing chord Once battery location established top half fuselage can planked battery-hatch provisions being incorporated Sand fuselage smooth finish adding 1A6 sheet balsa stab platform celluloid windscreens Seal balsa skin sanding sealer add appropriate number coats nitrate dope cover original 54-inch So Long tired-looking silk silkspan photos taken over decade ago Note vintage deflated M&M air wheelsRecommended flight pattern _____________________________________________is right climb right-hand _____________________________________________ glide expect So Long 54 respond under power squirrelly climb 50-inch size larger stab makes model orthodox behavior under power stable glide printing another oldie properly documented reincarnated thank Bob Larsh Milt Burley late Louie Levine others helped preserve actual model until design could forever preserved hope article will lay rest mysteries suppositions regarding fabled Englehardt B/C So Long Better yet may now enjoy once again odel Aviation pe FF Old-Timer Wingspan 54 inches Engine size/type Forster 29 ignition Flying weight 8 ozIsq ft wing area projected Construction Built-up Covering/finish Silk silkspan/ nitrate dope