NO OCR TEXT NO OCR TEXT Close heaven Full-scale UPF-7 annual WACO reunion Mount Vernon Ohio WACO UPF-7 introduced 1937 came along time open-cockpit biplanes used civil pilot training replaced monoplanes Only Army Navy continued use biplane trainers However outbreak World War II greatly expanded Civil Pilot Training CPT Program needed Between 1940 1942 WACO produced 600 UPF-7s CPT several modifications original 1937 aircraft including wider-tread landing gear bigger cutout top wing easier access front cockpit After war UPF-7s primarily used crop dusting joy riding Although UPF-7 used aerobatic training no match other biplane trainer venerable Stearman Hence UPF-7 never made big air shows boom antique airplanes began 1950s UPF-7s reappearedrevived restored Some restored aircraft have full cowls wheel pants Over years number UPF-7s has declined 1989 171 registered best places see beautifully restored UPF-7s other WACO models Annual WACO Reunion held last weekend June Mt Vernon Ohio can see greatest collection restored flying WACOs US Roy Day Before sheet top surface put aileron pushrods used flexible Nyrod type type choice will work top trailing edge sheeting should dampened can formed correctly around wing cutout After top sheeting add capstrips top bottom Fiberglass center section both wings one-ounce cloth laminating epoxy four ailerons built next prefer built-up ailerons because light weight solid lightweight balsa lightening holes could used built-up ailerons easy make simple jig shown patterns top bottom 1/16 skins shown plan sure put J/ plywood mounts aileron horn connecting pushrod Tail structure horizontal vertical tails /32 balsa sheet core 1/8 square false ribs added both sides simple lightweight strong particularly well suited curved tail surfaces Doublers cross-laminated /32 balsa provide necessary stiffness edge protection See Temp material useful cut out entire sheet core vertical horizontal tails time Sand false ribs top bottom give airfoil shape As wings coveringmaterial hinges used other types would work well prefer bolt-on tail surfaces plywood tongue inset bottom stab doubler two 6-32 nylon bolts fasten whole assembly fuselage Shape blocks light balsa support vertical tail stab fair fuselage former bA tail brace wires 032 music wire add lot strength Assembly finishing good practice install radio equipment before covering Put servos far forward practical receiver battery alongside fuel tank OS 70 Surpass FS did have add weight balance model center gravity CG indicated plan main landing gear made 5/32 I/ music wire bolted model sheet brass straps four 10-32 nylon bolts stretch-formed belly pan 060 highimpact Styrene cover landing gear mount belly pan can also made fiberglass built up balsa Cross braces some hardware-store springs added scale effect consider optional Before glue /32 plywood wing saddle cover place use Robart Incidence Meter check lower wing horizontal tail 00 incidence fuselage-to-wing fillet made plywood supported balsa gussets takes litfie cutting fitting get fillet right result well worth effort tail lower wing installed jig up top wing 00 incidence Mount fore aft cabane wire struts keeping wing correct incidence wrap 68 Model Aviation er landing gear jig match model mount Crossbraces springs simulate full-scale optional Metal brackets fiberglassed cowl secured firewall 6-32 bolts soft mount make engine cutout larger Removable Styrene belly pan allows access nylon landing gear bolts event hard landing 1132 plywood wing saddle cover provides base wing fillet Landing gear mounting holes also visible Bolt-on tail assembly light strong Easily removed incidence adjustment repair transport Dress up model instrument panel pilots Cockpit combing made automotive rubber tubing Completed UPF-7 framework shows nice proportions pleasing curved wingtips tail feathers Tail wheel tiller made sheet brass soldered wheel collar Springs local hardware store February 1995 69 Nearly identical top bottom wings use same ribs tips ailerons other partssimplifies construction Solid balsa ailerons can used built-up ailerons light easy make simple jig Paul Mali drawings used basis 164 version Clark V airfoil thickened 15% diagonal cabane brace place copper wire Carefully remove cabane strut assembly place jig hold steady solder silver solder wings have installed aligned N-struts can measured built place made N-struts 2-56 pushrod wire Z-bends upper ends devises lower ends Balsa fairings similar used cabane struts landing gear improve appearance covered model Coverites 21st Century Fabric Use thermometer iron follow recommended settings heat iron will pleased results suggestion apply Coverites Balsarite area fiberglassed ensure covering sticks corrugated effect ailerons formed plastic can get Sig Finish cockpits instrument panel cockpit coaming windscreens pilot figures split small-diameter rubber tubing auto supply use cockpit coaming Flying have now made 25 flights UPF-7 continues perform exceptionally well 05 engine 13 x 6 prop good match plenty power aerobatics Loops aileron rolls split Ses snap rolls anything else want easy UPF-7 weight 8 pounds wing loading comfortable 215 oz/ft2 Landings easyeither mains three pointswith good low-speed handling characteristics Stalls gentle straight ahead no tendency snap Several other pilots have flown WACO remarked its versatile flight characteristics build prettiest biplanes yourself enjoy some Golden Age flying questions contact 11709 Magruder Lane Rockville MD 20852 Tel 301 468-0915 Manufacturers mentioned listed below See Temp Box 105 Sussex WI 53089 JTec 164 School St Daly City CA 94014 Fiberglass Masters Rt 1 Box 530 Goodview VA 24095 Coverite 420 Babylon Rd Horsham PA 19044 Sig Manufacturing 401-7 South Front St Montezuma IA 50171 odel Aviation RO Scale Wingspan 56 inches Engine size/type 05 FS-70 Surpass Flying weight 8 pounds Construction Built-up Covering 21st Century fabric
Edition: Model Aviation - 1995/02
Page Numbers: 65, 66, 67, 68, 69, 70
NO OCR TEXT NO OCR TEXT Close heaven Full-scale UPF-7 annual WACO reunion Mount Vernon Ohio WACO UPF-7 introduced 1937 came along time open-cockpit biplanes used civil pilot training replaced monoplanes Only Army Navy continued use biplane trainers However outbreak World War II greatly expanded Civil Pilot Training CPT Program needed Between 1940 1942 WACO produced 600 UPF-7s CPT several modifications original 1937 aircraft including wider-tread landing gear bigger cutout top wing easier access front cockpit After war UPF-7s primarily used crop dusting joy riding Although UPF-7 used aerobatic training no match other biplane trainer venerable Stearman Hence UPF-7 never made big air shows boom antique airplanes began 1950s UPF-7s reappearedrevived restored Some restored aircraft have full cowls wheel pants Over years number UPF-7s has declined 1989 171 registered best places see beautifully restored UPF-7s other WACO models Annual WACO Reunion held last weekend June Mt Vernon Ohio can see greatest collection restored flying WACOs US Roy Day Before sheet top surface put aileron pushrods used flexible Nyrod type type choice will work top trailing edge sheeting should dampened can formed correctly around wing cutout After top sheeting add capstrips top bottom Fiberglass center section both wings one-ounce cloth laminating epoxy four ailerons built next prefer built-up ailerons because light weight solid lightweight balsa lightening holes could used built-up ailerons easy make simple jig shown patterns top bottom 1/16 skins shown plan sure put J/ plywood mounts aileron horn connecting pushrod Tail structure horizontal vertical tails /32 balsa sheet core 1/8 square false ribs added both sides simple lightweight strong particularly well suited curved tail surfaces Doublers cross-laminated /32 balsa provide necessary stiffness edge protection See Temp material useful cut out entire sheet core vertical horizontal tails time Sand false ribs top bottom give airfoil shape As wings coveringmaterial hinges used other types would work well prefer bolt-on tail surfaces plywood tongue inset bottom stab doubler two 6-32 nylon bolts fasten whole assembly fuselage Shape blocks light balsa support vertical tail stab fair fuselage former bA tail brace wires 032 music wire add lot strength Assembly finishing good practice install radio equipment before covering Put servos far forward practical receiver battery alongside fuel tank OS 70 Surpass FS did have add weight balance model center gravity CG indicated plan main landing gear made 5/32 I/ music wire bolted model sheet brass straps four 10-32 nylon bolts stretch-formed belly pan 060 highimpact Styrene cover landing gear mount belly pan can also made fiberglass built up balsa Cross braces some hardware-store springs added scale effect consider optional Before glue /32 plywood wing saddle cover place use Robart Incidence Meter check lower wing horizontal tail 00 incidence fuselage-to-wing fillet made plywood supported balsa gussets takes litfie cutting fitting get fillet right result well worth effort tail lower wing installed jig up top wing 00 incidence Mount fore aft cabane wire struts keeping wing correct incidence wrap 68 Model Aviation er landing gear jig match model mount Crossbraces springs simulate full-scale optional Metal brackets fiberglassed cowl secured firewall 6-32 bolts soft mount make engine cutout larger Removable Styrene belly pan allows access nylon landing gear bolts event hard landing 1132 plywood wing saddle cover provides base wing fillet Landing gear mounting holes also visible Bolt-on tail assembly light strong Easily removed incidence adjustment repair transport Dress up model instrument panel pilots Cockpit combing made automotive rubber tubing Completed UPF-7 framework shows nice proportions pleasing curved wingtips tail feathers Tail wheel tiller made sheet brass soldered wheel collar Springs local hardware store February 1995 69 Nearly identical top bottom wings use same ribs tips ailerons other partssimplifies construction Solid balsa ailerons can used built-up ailerons light easy make simple jig Paul Mali drawings used basis 164 version Clark V airfoil thickened 15% diagonal cabane brace place copper wire Carefully remove cabane strut assembly place jig hold steady solder silver solder wings have installed aligned N-struts can measured built place made N-struts 2-56 pushrod wire Z-bends upper ends devises lower ends Balsa fairings similar used cabane struts landing gear improve appearance covered model Coverites 21st Century Fabric Use thermometer iron follow recommended settings heat iron will pleased results suggestion apply Coverites Balsarite area fiberglassed ensure covering sticks corrugated effect ailerons formed plastic can get Sig Finish cockpits instrument panel cockpit coaming windscreens pilot figures split small-diameter rubber tubing auto supply use cockpit coaming Flying have now made 25 flights UPF-7 continues perform exceptionally well 05 engine 13 x 6 prop good match plenty power aerobatics Loops aileron rolls split Ses snap rolls anything else want easy UPF-7 weight 8 pounds wing loading comfortable 215 oz/ft2 Landings easyeither mains three pointswith good low-speed handling characteristics Stalls gentle straight ahead no tendency snap Several other pilots have flown WACO remarked its versatile flight characteristics build prettiest biplanes yourself enjoy some Golden Age flying questions contact 11709 Magruder Lane Rockville MD 20852 Tel 301 468-0915 Manufacturers mentioned listed below See Temp Box 105 Sussex WI 53089 JTec 164 School St Daly City CA 94014 Fiberglass Masters Rt 1 Box 530 Goodview VA 24095 Coverite 420 Babylon Rd Horsham PA 19044 Sig Manufacturing 401-7 South Front St Montezuma IA 50171 odel Aviation RO Scale Wingspan 56 inches Engine size/type 05 FS-70 Surpass Flying weight 8 pounds Construction Built-up Covering 21st Century fabric
Edition: Model Aviation - 1995/02
Page Numbers: 65, 66, 67, 68, 69, 70
NO OCR TEXT NO OCR TEXT Close heaven Full-scale UPF-7 annual WACO reunion Mount Vernon Ohio WACO UPF-7 introduced 1937 came along time open-cockpit biplanes used civil pilot training replaced monoplanes Only Army Navy continued use biplane trainers However outbreak World War II greatly expanded Civil Pilot Training CPT Program needed Between 1940 1942 WACO produced 600 UPF-7s CPT several modifications original 1937 aircraft including wider-tread landing gear bigger cutout top wing easier access front cockpit After war UPF-7s primarily used crop dusting joy riding Although UPF-7 used aerobatic training no match other biplane trainer venerable Stearman Hence UPF-7 never made big air shows boom antique airplanes began 1950s UPF-7s reappearedrevived restored Some restored aircraft have full cowls wheel pants Over years number UPF-7s has declined 1989 171 registered best places see beautifully restored UPF-7s other WACO models Annual WACO Reunion held last weekend June Mt Vernon Ohio can see greatest collection restored flying WACOs US Roy Day Before sheet top surface put aileron pushrods used flexible Nyrod type type choice will work top trailing edge sheeting should dampened can formed correctly around wing cutout After top sheeting add capstrips top bottom Fiberglass center section both wings one-ounce cloth laminating epoxy four ailerons built next prefer built-up ailerons because light weight solid lightweight balsa lightening holes could used built-up ailerons easy make simple jig shown patterns top bottom 1/16 skins shown plan sure put J/ plywood mounts aileron horn connecting pushrod Tail structure horizontal vertical tails /32 balsa sheet core 1/8 square false ribs added both sides simple lightweight strong particularly well suited curved tail surfaces Doublers cross-laminated /32 balsa provide necessary stiffness edge protection See Temp material useful cut out entire sheet core vertical horizontal tails time Sand false ribs top bottom give airfoil shape As wings coveringmaterial hinges used other types would work well prefer bolt-on tail surfaces plywood tongue inset bottom stab doubler two 6-32 nylon bolts fasten whole assembly fuselage Shape blocks light balsa support vertical tail stab fair fuselage former bA tail brace wires 032 music wire add lot strength Assembly finishing good practice install radio equipment before covering Put servos far forward practical receiver battery alongside fuel tank OS 70 Surpass FS did have add weight balance model center gravity CG indicated plan main landing gear made 5/32 I/ music wire bolted model sheet brass straps four 10-32 nylon bolts stretch-formed belly pan 060 highimpact Styrene cover landing gear mount belly pan can also made fiberglass built up balsa Cross braces some hardware-store springs added scale effect consider optional Before glue /32 plywood wing saddle cover place use Robart Incidence Meter check lower wing horizontal tail 00 incidence fuselage-to-wing fillet made plywood supported balsa gussets takes litfie cutting fitting get fillet right result well worth effort tail lower wing installed jig up top wing 00 incidence Mount fore aft cabane wire struts keeping wing correct incidence wrap 68 Model Aviation er landing gear jig match model mount Crossbraces springs simulate full-scale optional Metal brackets fiberglassed cowl secured firewall 6-32 bolts soft mount make engine cutout larger Removable Styrene belly pan allows access nylon landing gear bolts event hard landing 1132 plywood wing saddle cover provides base wing fillet Landing gear mounting holes also visible Bolt-on tail assembly light strong Easily removed incidence adjustment repair transport Dress up model instrument panel pilots Cockpit combing made automotive rubber tubing Completed UPF-7 framework shows nice proportions pleasing curved wingtips tail feathers Tail wheel tiller made sheet brass soldered wheel collar Springs local hardware store February 1995 69 Nearly identical top bottom wings use same ribs tips ailerons other partssimplifies construction Solid balsa ailerons can used built-up ailerons light easy make simple jig Paul Mali drawings used basis 164 version Clark V airfoil thickened 15% diagonal cabane brace place copper wire Carefully remove cabane strut assembly place jig hold steady solder silver solder wings have installed aligned N-struts can measured built place made N-struts 2-56 pushrod wire Z-bends upper ends devises lower ends Balsa fairings similar used cabane struts landing gear improve appearance covered model Coverites 21st Century Fabric Use thermometer iron follow recommended settings heat iron will pleased results suggestion apply Coverites Balsarite area fiberglassed ensure covering sticks corrugated effect ailerons formed plastic can get Sig Finish cockpits instrument panel cockpit coaming windscreens pilot figures split small-diameter rubber tubing auto supply use cockpit coaming Flying have now made 25 flights UPF-7 continues perform exceptionally well 05 engine 13 x 6 prop good match plenty power aerobatics Loops aileron rolls split Ses snap rolls anything else want easy UPF-7 weight 8 pounds wing loading comfortable 215 oz/ft2 Landings easyeither mains three pointswith good low-speed handling characteristics Stalls gentle straight ahead no tendency snap Several other pilots have flown WACO remarked its versatile flight characteristics build prettiest biplanes yourself enjoy some Golden Age flying questions contact 11709 Magruder Lane Rockville MD 20852 Tel 301 468-0915 Manufacturers mentioned listed below See Temp Box 105 Sussex WI 53089 JTec 164 School St Daly City CA 94014 Fiberglass Masters Rt 1 Box 530 Goodview VA 24095 Coverite 420 Babylon Rd Horsham PA 19044 Sig Manufacturing 401-7 South Front St Montezuma IA 50171 odel Aviation RO Scale Wingspan 56 inches Engine size/type 05 FS-70 Surpass Flying weight 8 pounds Construction Built-up Covering 21st Century fabric
Edition: Model Aviation - 1995/02
Page Numbers: 65, 66, 67, 68, 69, 70
NO OCR TEXT NO OCR TEXT Close heaven Full-scale UPF-7 annual WACO reunion Mount Vernon Ohio WACO UPF-7 introduced 1937 came along time open-cockpit biplanes used civil pilot training replaced monoplanes Only Army Navy continued use biplane trainers However outbreak World War II greatly expanded Civil Pilot Training CPT Program needed Between 1940 1942 WACO produced 600 UPF-7s CPT several modifications original 1937 aircraft including wider-tread landing gear bigger cutout top wing easier access front cockpit After war UPF-7s primarily used crop dusting joy riding Although UPF-7 used aerobatic training no match other biplane trainer venerable Stearman Hence UPF-7 never made big air shows boom antique airplanes began 1950s UPF-7s reappearedrevived restored Some restored aircraft have full cowls wheel pants Over years number UPF-7s has declined 1989 171 registered best places see beautifully restored UPF-7s other WACO models Annual WACO Reunion held last weekend June Mt Vernon Ohio can see greatest collection restored flying WACOs US Roy Day Before sheet top surface put aileron pushrods used flexible Nyrod type type choice will work top trailing edge sheeting should dampened can formed correctly around wing cutout After top sheeting add capstrips top bottom Fiberglass center section both wings one-ounce cloth laminating epoxy four ailerons built next prefer built-up ailerons because light weight solid lightweight balsa lightening holes could used built-up ailerons easy make simple jig shown patterns top bottom 1/16 skins shown plan sure put J/ plywood mounts aileron horn connecting pushrod Tail structure horizontal vertical tails /32 balsa sheet core 1/8 square false ribs added both sides simple lightweight strong particularly well suited curved tail surfaces Doublers cross-laminated /32 balsa provide necessary stiffness edge protection See Temp material useful cut out entire sheet core vertical horizontal tails time Sand false ribs top bottom give airfoil shape As wings coveringmaterial hinges used other types would work well prefer bolt-on tail surfaces plywood tongue inset bottom stab doubler two 6-32 nylon bolts fasten whole assembly fuselage Shape blocks light balsa support vertical tail stab fair fuselage former bA tail brace wires 032 music wire add lot strength Assembly finishing good practice install radio equipment before covering Put servos far forward practical receiver battery alongside fuel tank OS 70 Surpass FS did have add weight balance model center gravity CG indicated plan main landing gear made 5/32 I/ music wire bolted model sheet brass straps four 10-32 nylon bolts stretch-formed belly pan 060 highimpact Styrene cover landing gear mount belly pan can also made fiberglass built up balsa Cross braces some hardware-store springs added scale effect consider optional Before glue /32 plywood wing saddle cover place use Robart Incidence Meter check lower wing horizontal tail 00 incidence fuselage-to-wing fillet made plywood supported balsa gussets takes litfie cutting fitting get fillet right result well worth effort tail lower wing installed jig up top wing 00 incidence Mount fore aft cabane wire struts keeping wing correct incidence wrap 68 Model Aviation er landing gear jig match model mount Crossbraces springs simulate full-scale optional Metal brackets fiberglassed cowl secured firewall 6-32 bolts soft mount make engine cutout larger Removable Styrene belly pan allows access nylon landing gear bolts event hard landing 1132 plywood wing saddle cover provides base wing fillet Landing gear mounting holes also visible Bolt-on tail assembly light strong Easily removed incidence adjustment repair transport Dress up model instrument panel pilots Cockpit combing made automotive rubber tubing Completed UPF-7 framework shows nice proportions pleasing curved wingtips tail feathers Tail wheel tiller made sheet brass soldered wheel collar Springs local hardware store February 1995 69 Nearly identical top bottom wings use same ribs tips ailerons other partssimplifies construction Solid balsa ailerons can used built-up ailerons light easy make simple jig Paul Mali drawings used basis 164 version Clark V airfoil thickened 15% diagonal cabane brace place copper wire Carefully remove cabane strut assembly place jig hold steady solder silver solder wings have installed aligned N-struts can measured built place made N-struts 2-56 pushrod wire Z-bends upper ends devises lower ends Balsa fairings similar used cabane struts landing gear improve appearance covered model Coverites 21st Century Fabric Use thermometer iron follow recommended settings heat iron will pleased results suggestion apply Coverites Balsarite area fiberglassed ensure covering sticks corrugated effect ailerons formed plastic can get Sig Finish cockpits instrument panel cockpit coaming windscreens pilot figures split small-diameter rubber tubing auto supply use cockpit coaming Flying have now made 25 flights UPF-7 continues perform exceptionally well 05 engine 13 x 6 prop good match plenty power aerobatics Loops aileron rolls split Ses snap rolls anything else want easy UPF-7 weight 8 pounds wing loading comfortable 215 oz/ft2 Landings easyeither mains three pointswith good low-speed handling characteristics Stalls gentle straight ahead no tendency snap Several other pilots have flown WACO remarked its versatile flight characteristics build prettiest biplanes yourself enjoy some Golden Age flying questions contact 11709 Magruder Lane Rockville MD 20852 Tel 301 468-0915 Manufacturers mentioned listed below See Temp Box 105 Sussex WI 53089 JTec 164 School St Daly City CA 94014 Fiberglass Masters Rt 1 Box 530 Goodview VA 24095 Coverite 420 Babylon Rd Horsham PA 19044 Sig Manufacturing 401-7 South Front St Montezuma IA 50171 odel Aviation RO Scale Wingspan 56 inches Engine size/type 05 FS-70 Surpass Flying weight 8 pounds Construction Built-up Covering 21st Century fabric
Edition: Model Aviation - 1995/02
Page Numbers: 65, 66, 67, 68, 69, 70
NO OCR TEXT NO OCR TEXT Close heaven Full-scale UPF-7 annual WACO reunion Mount Vernon Ohio WACO UPF-7 introduced 1937 came along time open-cockpit biplanes used civil pilot training replaced monoplanes Only Army Navy continued use biplane trainers However outbreak World War II greatly expanded Civil Pilot Training CPT Program needed Between 1940 1942 WACO produced 600 UPF-7s CPT several modifications original 1937 aircraft including wider-tread landing gear bigger cutout top wing easier access front cockpit After war UPF-7s primarily used crop dusting joy riding Although UPF-7 used aerobatic training no match other biplane trainer venerable Stearman Hence UPF-7 never made big air shows boom antique airplanes began 1950s UPF-7s reappearedrevived restored Some restored aircraft have full cowls wheel pants Over years number UPF-7s has declined 1989 171 registered best places see beautifully restored UPF-7s other WACO models Annual WACO Reunion held last weekend June Mt Vernon Ohio can see greatest collection restored flying WACOs US Roy Day Before sheet top surface put aileron pushrods used flexible Nyrod type type choice will work top trailing edge sheeting should dampened can formed correctly around wing cutout After top sheeting add capstrips top bottom Fiberglass center section both wings one-ounce cloth laminating epoxy four ailerons built next prefer built-up ailerons because light weight solid lightweight balsa lightening holes could used built-up ailerons easy make simple jig shown patterns top bottom 1/16 skins shown plan sure put J/ plywood mounts aileron horn connecting pushrod Tail structure horizontal vertical tails /32 balsa sheet core 1/8 square false ribs added both sides simple lightweight strong particularly well suited curved tail surfaces Doublers cross-laminated /32 balsa provide necessary stiffness edge protection See Temp material useful cut out entire sheet core vertical horizontal tails time Sand false ribs top bottom give airfoil shape As wings coveringmaterial hinges used other types would work well prefer bolt-on tail surfaces plywood tongue inset bottom stab doubler two 6-32 nylon bolts fasten whole assembly fuselage Shape blocks light balsa support vertical tail stab fair fuselage former bA tail brace wires 032 music wire add lot strength Assembly finishing good practice install radio equipment before covering Put servos far forward practical receiver battery alongside fuel tank OS 70 Surpass FS did have add weight balance model center gravity CG indicated plan main landing gear made 5/32 I/ music wire bolted model sheet brass straps four 10-32 nylon bolts stretch-formed belly pan 060 highimpact Styrene cover landing gear mount belly pan can also made fiberglass built up balsa Cross braces some hardware-store springs added scale effect consider optional Before glue /32 plywood wing saddle cover place use Robart Incidence Meter check lower wing horizontal tail 00 incidence fuselage-to-wing fillet made plywood supported balsa gussets takes litfie cutting fitting get fillet right result well worth effort tail lower wing installed jig up top wing 00 incidence Mount fore aft cabane wire struts keeping wing correct incidence wrap 68 Model Aviation er landing gear jig match model mount Crossbraces springs simulate full-scale optional Metal brackets fiberglassed cowl secured firewall 6-32 bolts soft mount make engine cutout larger Removable Styrene belly pan allows access nylon landing gear bolts event hard landing 1132 plywood wing saddle cover provides base wing fillet Landing gear mounting holes also visible Bolt-on tail assembly light strong Easily removed incidence adjustment repair transport Dress up model instrument panel pilots Cockpit combing made automotive rubber tubing Completed UPF-7 framework shows nice proportions pleasing curved wingtips tail feathers Tail wheel tiller made sheet brass soldered wheel collar Springs local hardware store February 1995 69 Nearly identical top bottom wings use same ribs tips ailerons other partssimplifies construction Solid balsa ailerons can used built-up ailerons light easy make simple jig Paul Mali drawings used basis 164 version Clark V airfoil thickened 15% diagonal cabane brace place copper wire Carefully remove cabane strut assembly place jig hold steady solder silver solder wings have installed aligned N-struts can measured built place made N-struts 2-56 pushrod wire Z-bends upper ends devises lower ends Balsa fairings similar used cabane struts landing gear improve appearance covered model Coverites 21st Century Fabric Use thermometer iron follow recommended settings heat iron will pleased results suggestion apply Coverites Balsarite area fiberglassed ensure covering sticks corrugated effect ailerons formed plastic can get Sig Finish cockpits instrument panel cockpit coaming windscreens pilot figures split small-diameter rubber tubing auto supply use cockpit coaming Flying have now made 25 flights UPF-7 continues perform exceptionally well 05 engine 13 x 6 prop good match plenty power aerobatics Loops aileron rolls split Ses snap rolls anything else want easy UPF-7 weight 8 pounds wing loading comfortable 215 oz/ft2 Landings easyeither mains three pointswith good low-speed handling characteristics Stalls gentle straight ahead no tendency snap Several other pilots have flown WACO remarked its versatile flight characteristics build prettiest biplanes yourself enjoy some Golden Age flying questions contact 11709 Magruder Lane Rockville MD 20852 Tel 301 468-0915 Manufacturers mentioned listed below See Temp Box 105 Sussex WI 53089 JTec 164 School St Daly City CA 94014 Fiberglass Masters Rt 1 Box 530 Goodview VA 24095 Coverite 420 Babylon Rd Horsham PA 19044 Sig Manufacturing 401-7 South Front St Montezuma IA 50171 odel Aviation RO Scale Wingspan 56 inches Engine size/type 05 FS-70 Surpass Flying weight 8 pounds Construction Built-up Covering 21st Century fabric
Edition: Model Aviation - 1995/02
Page Numbers: 65, 66, 67, 68, 69, 70
NO OCR TEXT NO OCR TEXT Close heaven Full-scale UPF-7 annual WACO reunion Mount Vernon Ohio WACO UPF-7 introduced 1937 came along time open-cockpit biplanes used civil pilot training replaced monoplanes Only Army Navy continued use biplane trainers However outbreak World War II greatly expanded Civil Pilot Training CPT Program needed Between 1940 1942 WACO produced 600 UPF-7s CPT several modifications original 1937 aircraft including wider-tread landing gear bigger cutout top wing easier access front cockpit After war UPF-7s primarily used crop dusting joy riding Although UPF-7 used aerobatic training no match other biplane trainer venerable Stearman Hence UPF-7 never made big air shows boom antique airplanes began 1950s UPF-7s reappearedrevived restored Some restored aircraft have full cowls wheel pants Over years number UPF-7s has declined 1989 171 registered best places see beautifully restored UPF-7s other WACO models Annual WACO Reunion held last weekend June Mt Vernon Ohio can see greatest collection restored flying WACOs US Roy Day Before sheet top surface put aileron pushrods used flexible Nyrod type type choice will work top trailing edge sheeting should dampened can formed correctly around wing cutout After top sheeting add capstrips top bottom Fiberglass center section both wings one-ounce cloth laminating epoxy four ailerons built next prefer built-up ailerons because light weight solid lightweight balsa lightening holes could used built-up ailerons easy make simple jig shown patterns top bottom 1/16 skins shown plan sure put J/ plywood mounts aileron horn connecting pushrod Tail structure horizontal vertical tails /32 balsa sheet core 1/8 square false ribs added both sides simple lightweight strong particularly well suited curved tail surfaces Doublers cross-laminated /32 balsa provide necessary stiffness edge protection See Temp material useful cut out entire sheet core vertical horizontal tails time Sand false ribs top bottom give airfoil shape As wings coveringmaterial hinges used other types would work well prefer bolt-on tail surfaces plywood tongue inset bottom stab doubler two 6-32 nylon bolts fasten whole assembly fuselage Shape blocks light balsa support vertical tail stab fair fuselage former bA tail brace wires 032 music wire add lot strength Assembly finishing good practice install radio equipment before covering Put servos far forward practical receiver battery alongside fuel tank OS 70 Surpass FS did have add weight balance model center gravity CG indicated plan main landing gear made 5/32 I/ music wire bolted model sheet brass straps four 10-32 nylon bolts stretch-formed belly pan 060 highimpact Styrene cover landing gear mount belly pan can also made fiberglass built up balsa Cross braces some hardware-store springs added scale effect consider optional Before glue /32 plywood wing saddle cover place use Robart Incidence Meter check lower wing horizontal tail 00 incidence fuselage-to-wing fillet made plywood supported balsa gussets takes litfie cutting fitting get fillet right result well worth effort tail lower wing installed jig up top wing 00 incidence Mount fore aft cabane wire struts keeping wing correct incidence wrap 68 Model Aviation er landing gear jig match model mount Crossbraces springs simulate full-scale optional Metal brackets fiberglassed cowl secured firewall 6-32 bolts soft mount make engine cutout larger Removable Styrene belly pan allows access nylon landing gear bolts event hard landing 1132 plywood wing saddle cover provides base wing fillet Landing gear mounting holes also visible Bolt-on tail assembly light strong Easily removed incidence adjustment repair transport Dress up model instrument panel pilots Cockpit combing made automotive rubber tubing Completed UPF-7 framework shows nice proportions pleasing curved wingtips tail feathers Tail wheel tiller made sheet brass soldered wheel collar Springs local hardware store February 1995 69 Nearly identical top bottom wings use same ribs tips ailerons other partssimplifies construction Solid balsa ailerons can used built-up ailerons light easy make simple jig Paul Mali drawings used basis 164 version Clark V airfoil thickened 15% diagonal cabane brace place copper wire Carefully remove cabane strut assembly place jig hold steady solder silver solder wings have installed aligned N-struts can measured built place made N-struts 2-56 pushrod wire Z-bends upper ends devises lower ends Balsa fairings similar used cabane struts landing gear improve appearance covered model Coverites 21st Century Fabric Use thermometer iron follow recommended settings heat iron will pleased results suggestion apply Coverites Balsarite area fiberglassed ensure covering sticks corrugated effect ailerons formed plastic can get Sig Finish cockpits instrument panel cockpit coaming windscreens pilot figures split small-diameter rubber tubing auto supply use cockpit coaming Flying have now made 25 flights UPF-7 continues perform exceptionally well 05 engine 13 x 6 prop good match plenty power aerobatics Loops aileron rolls split Ses snap rolls anything else want easy UPF-7 weight 8 pounds wing loading comfortable 215 oz/ft2 Landings easyeither mains three pointswith good low-speed handling characteristics Stalls gentle straight ahead no tendency snap Several other pilots have flown WACO remarked its versatile flight characteristics build prettiest biplanes yourself enjoy some Golden Age flying questions contact 11709 Magruder Lane Rockville MD 20852 Tel 301 468-0915 Manufacturers mentioned listed below See Temp Box 105 Sussex WI 53089 JTec 164 School St Daly City CA 94014 Fiberglass Masters Rt 1 Box 530 Goodview VA 24095 Coverite 420 Babylon Rd Horsham PA 19044 Sig Manufacturing 401-7 South Front St Montezuma IA 50171 odel Aviation RO Scale Wingspan 56 inches Engine size/type 05 FS-70 Surpass Flying weight 8 pounds Construction Built-up Covering 21st Century fabric