mp Once popular profile shape America modeling Model flies best into-wind slightly right wind take-off stably rolls back right poor launch h dALE KORDA SCALING DOWN structuring model genuine treat barely seven years old Dick Korda blew everyone off field 45-minuteplus flight 1938 Wakefield compe tition have wanted ever since make duplicate design still wins lot contests both Old Timer pre-1941 under AMA Unlimited Rubber rules also named among Best Ten Models Year 1973 Natio nal Free Flight Society NFFS may Wow cate gory can say half-size repli ca flew absolutely perfectly ROG rise off ground very first time Its pleasing model Weighing about ounce powered four strands Sig 3/16 Contest rub ber ship capable slow right circ ling flights 30 seconds better wound half-capacity Thirty sec onds eternity thats sure So ideal schoolyard ballpark project full winds thermal proximity sure affix return address All-balsa half-scale model historys famous machines will 30 seconds half wound Preparations From plans pho tos obvious going fairly simple short building task Care fully select wood both light straight Wing tail pieces should warp-free A-grain note grain pictures stock Two 3 X 36 sheets will make various formers bulk heads gussets etc fuselage sides may come out single sheet 1/32 stock dont mind little patchwork rear side should fairly firm wood swirly quarter-grained stuff being best choice lot has written lately about glues adhesives model workwhich best job heaviest exactly use seldom covered detail So before go tear ing up beautiful wood lets get glueing moment view strong light neat-appearing models particularly kind dealing best assembled Titebond equivalent aliphatic resin product big globs running over place very little good glue non-filleting develops its true character used relatively thin amounts two appli cations being better heavy technique known double-glueing takes small additional amount time saves endless grief later hit wall speak way thin Titebond few drops water shake up thoroughly repeat until stuff looks like evaporated milk viscosity too thick too thin Put thin coat mating surfaces brush Work small puddle poured saucer piece Saran Wrap Always try both sides joint have wiggle some tight places times Let dryten minutes average dampest days Now ready assemble whatever pieces hand apply second very thin coat again both sides joint push together Titehond has excellent grab potential will find good side-benefit double-glueing everything operations can done hand air need held few seconds drafting tape maintain align ment whole procedure fast strong light very neat-appearing Doing Make up patterns wing tail group fuselage sides Xeroxing tracing transfer filing card stock similar material Glue 1/16 1/8 spruce stock wing blank leading edge Flat-sand material before cutting successive grades 220- 400-grit sandpaper third sheet around 3/8 1 e batten wood works well Mark outlines important verticals wing breaks bulkheads 36 Model Aviation parts ready serious building Nose rear-rudder peg doublers place nose plug already assembled something like BIC Banana pen Give bottom wing blank coat thinned clear dope right over mark ings Sand smooth Cut everything shape Now good time work up bulkheads few gus sets rough out nose plug add doublers nose motor peg areas etc thin plywood bits wheels rib pattern nose face can cut good pair shears Just dont let you-know-who catch Carefully shape ribs 3/32 sheetscrap lftheyarecut well sharp knife should need no sanding Ditto bulkheads Parts need edge-sanding wing tail fuselage sides Now time begin putting mag nificent prefabrication together pre-glue everything first Join fuselage sides rear Glue front third wing rib bottom wing blank Eyeball good po sition As soon joints have set up about 20 minutes-begin bulkhead instal lation D working brush little glue back two-thirds wing rib pull down gently pin form wing camber Go easy pins Install bulkheads C B order Next add 1/16 sq top bottom fuselage spreaders Try fit finger-tight bowing stall double glueing Bend up land ing gear fits snugly front C bulkhead line up several di rections fix place good cov ering five-minute epoxy photo graph shows very clearly As soon epoxy set lay gussets illus trated Cut number pieces 1/32 sheet fuselage top bottom covering grain should go across fuselage Double glue install hold place drafting tape Please use drafting tape otherwise things will come apart removal Block-sand fuselage four sides polyhedral wing joints accom plished time-honored hand-launched glider method Cut wing four main panels after ribs dry bevel/sand proper angle No 220-grit sandpaper seems work best Test fit Pin down inner panels glue tip dihedral first center last Again go easy pins Things should looking like Half Korda now Put plywood nose plate Trial-fit nose plug finishsand Drill ream small holes tub ing noseplug wheels tubes can held place very small amount five-minute epoxy virtually bullet-proof light model such thisturn page January 1976 37 Left Author begins fuselage assembly joining tail post loca ting bulkhead D followed C B order Above Fuselage complete except top bottom balsa sheeting Above Top bottom sheeting pieces held drafting tape until glue dries used Titebond thinned lightly watersee text Right half-size model gear installation simple U 03 0 4 Li 030 -JD 4 C Wa 03J DW H wLiLi o1 H OC n -403 o 4J 2 -4 H -4Li 4I 2 LiCD z 4 COLi 0 H Li-4 I 0 0 H 0 Li - CD 4 -4 4 H Li 03 Z 0-4 H 4 03 4 Z 0 Li CC -4H 04z 40. 03 U Co __ 4 CCN H0 z CD03 Lid 053 z 4W 03 H03 Co-4 C -4 03 0 4 5Li 40 4Li F12 Li403 JIJ10aF 4 50H aLJZI C0 0 03 U H 4 H half k@ ida replica sport rubber airplane012456 1iimSsaii t/wamtaaa point good idea cut out numbers letters plus window trim tissue attach thin clear dope everything looks right give parts except bottom wing coat thin pasticized clear dope Sig Lite-Coat works very well dry sand whole works well-worn piece 400- 500-grit paper Attach stabilizer fin sub-fin using best eyeball methods Note 1/16 1/8 stifleners fin bits Put wing tail hold-down dowels rear motor peg Cut hole access rubber motor See pictures Sand off rough edges Get front end together bending up prop shaft add prop washers plastic propellers avail38 Model Aviation 0HLi 0 H H NN0 303 H 3/DH HH LiZ Li5 I- 03 N H C C able freewheeling simple 900 bend required finish job Outings Make up four-strand motor 3/16 rubber should little longer motor peg nose distance Refer Sport Modeler Sept 1974 Clarence Mathers excellent advice operation Fish motor place secure Use winding hook front model can safely wound prop off See photograph Check bal ance point indoors certain plus minus no eighth January 1976 39 front third 3/32 ribs cemented sheet-balsa wing blank couple pins rib may make easier rear two-thirds ribs glue coated pulled down gently held place couple pins Camber automatic Above By placing panel butt ends edge work board dihedral angle sanded block sander Right polyhedraled wing tips joined center panels sure have left right wings Below Center section wing doubled center ribs triangular gussets glued both edges Close-up detail nose plug tube bearing teflon washers An 8-1/4 plastic prop used four strands 3/16 rubber Prop free-wheelingit rotates rubber wound down Half -Korda inch plan location Add clay fore aft set right Now fun part Try few gentle hand glides about knee high slightly nose-down airplane no soarer should proceed stable fashion about eight ten feet pronounced dorks Take little time balance check gliding procedures Incidentally believe first flights should ROG crank about 200 turns winder get fix wind let rip either directly very slightly right side off-wind HaIf-Korda along its big brothers flies almost crash-proof forced little bit right under power prototype did naturally worried about ahead time put little right- down-thrust either drill nose plug adding paper match stick top left side nose plug before launch Glue place flight trim normal Glide may right left straight ahead better let model seek its own way first motor used will take about 500550 turns things generally still fun less tense about 400 350 turns ROG climb still steep flights very satisfying Small models like always losing front ends seems after rubber continued page 73 Right Plywood wheel has piece metal tube bearinguse five-minute epoxy hold drop end axle retain wheel 40 Model Aviation Above If exercise patience dont rush model could like Right Although author test flies 200 turns uses 300 normally stretch winding permits 500 550 turns Ready go flying full-size machine built-up construction won 1938 Wakefield flight 45 mm plus cially aft Slide bat tery servos etc fore-afi obtain balance point Remember check CG accessories installed pushrods fuel tank prop etc Control Surface Movements Initially set up surface movements follow ing Elevator Aileron -3/16 up down Rudder % right left Radio Installation Use servo trays possible 4 BITS will accept three KPS-12 type servos mounted side-by-side tray Use aileron servo side mount bracket Wrap battery foam install receiver-servo area use NyRod acceptable rudder pushrod should used elevator sure aileron control horns free after installation wing Some filing wing hold-down blocks may necessary Use flex cable engine throttle hook-up Flying 4 BITS will very re sponsive Set control surface movements suit individual preference never set response allow snap-roll aircraft raced find point increase elevator throw until snap-roll obtained back-off hole control horn general sport flying set control surface movements limited flying ability Always however start out soft controls Youll find 4 BITS fun aircraft youve ever flown racing watch out guys -Korda/Oldenkamp continued page 40 winds down free-wheeling begins particularly shaft gets bent little landing knock vibration sets An easy way cure since nose plug gets lot wear simply cant made lit forever coat fiveminute epoxy slip place pull out let dry doesnt work put piece masking tape top outer joint just after winding point being noseplug should free fall out airplane hits something gets upset upon landing References Balsa plywood spruce music wire rubber strip dowels tubing tissue Lite-Coat dope rubber lubricant etc available directly Sig Manu facturing Co Montezuma Iowa local hobby shops Sandpaper Titebond glue Five-Mm ute Epoxy glue--from variety hardware stores Plastic Propellers Peck-Polymers has some excellent units up 9/2 diameter Peck-Polymers P0 Box 2498 La Mesa Ca 92041 Rubber Winding Hook Jim Crockett Replicas l442 N Fruit Ave Fresno Ca 93728 PermaGloss Coverite may newest revolution covering material Heres unsolicited testimonial editor RC Modeler Mr Don Dewey quote part August 1975 issue .. iron-on plastic fabrics several minor dis advantages Among high gloss plastic look could hidden several coats exhaust residue addition materials have tendency sag during periods extreme humidity changes. d like have next model covered fabric far stronger silk covers up minor surface imperfections actually contains four coats paint realistic painted fabric appearance no plastic sheen will never shatter sag scratch best all have iron sanded framework l find aircraft covered Coverite PermaGloss will have lightest yet strongest coverings can possibly apply addition will have painted fabric appearance would find difficult equal silk dope aircraft particularly strength-to-weight ratio w standpoint realistic appearance strength durability ease repair mention ease application aGloss may newest revolution covering materials C0Vi-i i Chestnut St Phila Pa 19106 U QUE PLANS FOR GAS MODELERS PRICE INCLUDE PATTERNO 42 Eoig P26A $14 . 45 BOio 940-3 P12 $9 0ip OR] $7 47 C Bk P4-E $15 pod XIII $10 47 Oohook F11C-2 $15 l 17 $9 47 CoIC BeIIdie $11 Pp $8 48 GM GlodMbe $10 OHBoo 0 $9 49 SI Koode P017 $10 FBI 2B6C $11 $0 Polith Fl PO $10 rpe 46 Plo] DIII 50, $9 82 Slooo TW SB7 $10 Sop 07F1$11 $7 Co 010 FoIoo $15 54 MoMB-i$14 57 CoSO2C1 Soo $14 57 Boote 0,i0oiI$95B Boejo0B9Boobe$9 6AEGGVBoobeS1260Doog 0-SB00$$12 ___66 Coo 2GSI1ockef5F1 $14 $20 07 Liod Look Siio $12 $94610MOBE 4B Mc 109K Fl025 $20 2$ $25 50Doog 0i OCS$25 * 50Fo 5170 $2 5149SB I0 $1oole, 4089 $10so .512 $6C Wooho,k P40 $15RE BORE TO ADD20 -~ 47B Mo Molligo $12POE HANDLING BINS MODELOOMS QUICKEST MAIL SERVICE January 1976 73 Sflu 4 vOiCe PeiCtS SI 1401dfl AgO jflhjdLJLKjlilft ito UJA.n Ra.isteiisciaesi RI/Salt b0diiO. fS.mat 545 etitog *i MYIfl Shiv SRSet OfOpOSte-gO paid iSqflhRy Dtie
Edition: Model Aviation - 1976/01
Page Numbers: 36, 37, 38, 39, 40, 73
mp Once popular profile shape America modeling Model flies best into-wind slightly right wind take-off stably rolls back right poor launch h dALE KORDA SCALING DOWN structuring model genuine treat barely seven years old Dick Korda blew everyone off field 45-minuteplus flight 1938 Wakefield compe tition have wanted ever since make duplicate design still wins lot contests both Old Timer pre-1941 under AMA Unlimited Rubber rules also named among Best Ten Models Year 1973 Natio nal Free Flight Society NFFS may Wow cate gory can say half-size repli ca flew absolutely perfectly ROG rise off ground very first time Its pleasing model Weighing about ounce powered four strands Sig 3/16 Contest rub ber ship capable slow right circ ling flights 30 seconds better wound half-capacity Thirty sec onds eternity thats sure So ideal schoolyard ballpark project full winds thermal proximity sure affix return address All-balsa half-scale model historys famous machines will 30 seconds half wound Preparations From plans pho tos obvious going fairly simple short building task Care fully select wood both light straight Wing tail pieces should warp-free A-grain note grain pictures stock Two 3 X 36 sheets will make various formers bulk heads gussets etc fuselage sides may come out single sheet 1/32 stock dont mind little patchwork rear side should fairly firm wood swirly quarter-grained stuff being best choice lot has written lately about glues adhesives model workwhich best job heaviest exactly use seldom covered detail So before go tear ing up beautiful wood lets get glueing moment view strong light neat-appearing models particularly kind dealing best assembled Titebond equivalent aliphatic resin product big globs running over place very little good glue non-filleting develops its true character used relatively thin amounts two appli cations being better heavy technique known double-glueing takes small additional amount time saves endless grief later hit wall speak way thin Titebond few drops water shake up thoroughly repeat until stuff looks like evaporated milk viscosity too thick too thin Put thin coat mating surfaces brush Work small puddle poured saucer piece Saran Wrap Always try both sides joint have wiggle some tight places times Let dryten minutes average dampest days Now ready assemble whatever pieces hand apply second very thin coat again both sides joint push together Titehond has excellent grab potential will find good side-benefit double-glueing everything operations can done hand air need held few seconds drafting tape maintain align ment whole procedure fast strong light very neat-appearing Doing Make up patterns wing tail group fuselage sides Xeroxing tracing transfer filing card stock similar material Glue 1/16 1/8 spruce stock wing blank leading edge Flat-sand material before cutting successive grades 220- 400-grit sandpaper third sheet around 3/8 1 e batten wood works well Mark outlines important verticals wing breaks bulkheads 36 Model Aviation parts ready serious building Nose rear-rudder peg doublers place nose plug already assembled something like BIC Banana pen Give bottom wing blank coat thinned clear dope right over mark ings Sand smooth Cut everything shape Now good time work up bulkheads few gus sets rough out nose plug add doublers nose motor peg areas etc thin plywood bits wheels rib pattern nose face can cut good pair shears Just dont let you-know-who catch Carefully shape ribs 3/32 sheetscrap lftheyarecut well sharp knife should need no sanding Ditto bulkheads Parts need edge-sanding wing tail fuselage sides Now time begin putting mag nificent prefabrication together pre-glue everything first Join fuselage sides rear Glue front third wing rib bottom wing blank Eyeball good po sition As soon joints have set up about 20 minutes-begin bulkhead instal lation D working brush little glue back two-thirds wing rib pull down gently pin form wing camber Go easy pins Install bulkheads C B order Next add 1/16 sq top bottom fuselage spreaders Try fit finger-tight bowing stall double glueing Bend up land ing gear fits snugly front C bulkhead line up several di rections fix place good cov ering five-minute epoxy photo graph shows very clearly As soon epoxy set lay gussets illus trated Cut number pieces 1/32 sheet fuselage top bottom covering grain should go across fuselage Double glue install hold place drafting tape Please use drafting tape otherwise things will come apart removal Block-sand fuselage four sides polyhedral wing joints accom plished time-honored hand-launched glider method Cut wing four main panels after ribs dry bevel/sand proper angle No 220-grit sandpaper seems work best Test fit Pin down inner panels glue tip dihedral first center last Again go easy pins Things should looking like Half Korda now Put plywood nose plate Trial-fit nose plug finishsand Drill ream small holes tub ing noseplug wheels tubes can held place very small amount five-minute epoxy virtually bullet-proof light model such thisturn page January 1976 37 Left Author begins fuselage assembly joining tail post loca ting bulkhead D followed C B order Above Fuselage complete except top bottom balsa sheeting Above Top bottom sheeting pieces held drafting tape until glue dries used Titebond thinned lightly watersee text Right half-size model gear installation simple U 03 0 4 Li 030 -JD 4 C Wa 03J DW H wLiLi o1 H OC n -403 o 4J 2 -4 H -4Li 4I 2 LiCD z 4 COLi 0 H Li-4 I 0 0 H 0 Li - CD 4 -4 4 H Li 03 Z 0-4 H 4 03 4 Z 0 Li CC -4H 04z 40. 03 U Co __ 4 CCN H0 z CD03 Lid 053 z 4W 03 H03 Co-4 C -4 03 0 4 5Li 40 4Li F12 Li403 JIJ10aF 4 50H aLJZI C0 0 03 U H 4 H half k@ ida replica sport rubber airplane012456 1iimSsaii t/wamtaaa point good idea cut out numbers letters plus window trim tissue attach thin clear dope everything looks right give parts except bottom wing coat thin pasticized clear dope Sig Lite-Coat works very well dry sand whole works well-worn piece 400- 500-grit paper Attach stabilizer fin sub-fin using best eyeball methods Note 1/16 1/8 stifleners fin bits Put wing tail hold-down dowels rear motor peg Cut hole access rubber motor See pictures Sand off rough edges Get front end together bending up prop shaft add prop washers plastic propellers avail38 Model Aviation 0HLi 0 H H NN0 303 H 3/DH HH LiZ Li5 I- 03 N H C C able freewheeling simple 900 bend required finish job Outings Make up four-strand motor 3/16 rubber should little longer motor peg nose distance Refer Sport Modeler Sept 1974 Clarence Mathers excellent advice operation Fish motor place secure Use winding hook front model can safely wound prop off See photograph Check bal ance point indoors certain plus minus no eighth January 1976 39 front third 3/32 ribs cemented sheet-balsa wing blank couple pins rib may make easier rear two-thirds ribs glue coated pulled down gently held place couple pins Camber automatic Above By placing panel butt ends edge work board dihedral angle sanded block sander Right polyhedraled wing tips joined center panels sure have left right wings Below Center section wing doubled center ribs triangular gussets glued both edges Close-up detail nose plug tube bearing teflon washers An 8-1/4 plastic prop used four strands 3/16 rubber Prop free-wheelingit rotates rubber wound down Half -Korda inch plan location Add clay fore aft set right Now fun part Try few gentle hand glides about knee high slightly nose-down airplane no soarer should proceed stable fashion about eight ten feet pronounced dorks Take little time balance check gliding procedures Incidentally believe first flights should ROG crank about 200 turns winder get fix wind let rip either directly very slightly right side off-wind HaIf-Korda along its big brothers flies almost crash-proof forced little bit right under power prototype did naturally worried about ahead time put little right- down-thrust either drill nose plug adding paper match stick top left side nose plug before launch Glue place flight trim normal Glide may right left straight ahead better let model seek its own way first motor used will take about 500550 turns things generally still fun less tense about 400 350 turns ROG climb still steep flights very satisfying Small models like always losing front ends seems after rubber continued page 73 Right Plywood wheel has piece metal tube bearinguse five-minute epoxy hold drop end axle retain wheel 40 Model Aviation Above If exercise patience dont rush model could like Right Although author test flies 200 turns uses 300 normally stretch winding permits 500 550 turns Ready go flying full-size machine built-up construction won 1938 Wakefield flight 45 mm plus cially aft Slide bat tery servos etc fore-afi obtain balance point Remember check CG accessories installed pushrods fuel tank prop etc Control Surface Movements Initially set up surface movements follow ing Elevator Aileron -3/16 up down Rudder % right left Radio Installation Use servo trays possible 4 BITS will accept three KPS-12 type servos mounted side-by-side tray Use aileron servo side mount bracket Wrap battery foam install receiver-servo area use NyRod acceptable rudder pushrod should used elevator sure aileron control horns free after installation wing Some filing wing hold-down blocks may necessary Use flex cable engine throttle hook-up Flying 4 BITS will very re sponsive Set control surface movements suit individual preference never set response allow snap-roll aircraft raced find point increase elevator throw until snap-roll obtained back-off hole control horn general sport flying set control surface movements limited flying ability Always however start out soft controls Youll find 4 BITS fun aircraft youve ever flown racing watch out guys -Korda/Oldenkamp continued page 40 winds down free-wheeling begins particularly shaft gets bent little landing knock vibration sets An easy way cure since nose plug gets lot wear simply cant made lit forever coat fiveminute epoxy slip place pull out let dry doesnt work put piece masking tape top outer joint just after winding point being noseplug should free fall out airplane hits something gets upset upon landing References Balsa plywood spruce music wire rubber strip dowels tubing tissue Lite-Coat dope rubber lubricant etc available directly Sig Manu facturing Co Montezuma Iowa local hobby shops Sandpaper Titebond glue Five-Mm ute Epoxy glue--from variety hardware stores Plastic Propellers Peck-Polymers has some excellent units up 9/2 diameter Peck-Polymers P0 Box 2498 La Mesa Ca 92041 Rubber Winding Hook Jim Crockett Replicas l442 N Fruit Ave Fresno Ca 93728 PermaGloss Coverite may newest revolution covering material Heres unsolicited testimonial editor RC Modeler Mr Don Dewey quote part August 1975 issue .. iron-on plastic fabrics several minor dis advantages Among high gloss plastic look could hidden several coats exhaust residue addition materials have tendency sag during periods extreme humidity changes. d like have next model covered fabric far stronger silk covers up minor surface imperfections actually contains four coats paint realistic painted fabric appearance no plastic sheen will never shatter sag scratch best all have iron sanded framework l find aircraft covered Coverite PermaGloss will have lightest yet strongest coverings can possibly apply addition will have painted fabric appearance would find difficult equal silk dope aircraft particularly strength-to-weight ratio w standpoint realistic appearance strength durability ease repair mention ease application aGloss may newest revolution covering materials C0Vi-i i Chestnut St Phila Pa 19106 U QUE PLANS FOR GAS MODELERS PRICE INCLUDE PATTERNO 42 Eoig P26A $14 . 45 BOio 940-3 P12 $9 0ip OR] $7 47 C Bk P4-E $15 pod XIII $10 47 Oohook F11C-2 $15 l 17 $9 47 CoIC BeIIdie $11 Pp $8 48 GM GlodMbe $10 OHBoo 0 $9 49 SI Koode P017 $10 FBI 2B6C $11 $0 Polith Fl PO $10 rpe 46 Plo] DIII 50, $9 82 Slooo TW SB7 $10 Sop 07F1$11 $7 Co 010 FoIoo $15 54 MoMB-i$14 57 CoSO2C1 Soo $14 57 Boote 0,i0oiI$95B Boejo0B9Boobe$9 6AEGGVBoobeS1260Doog 0-SB00$$12 ___66 Coo 2GSI1ockef5F1 $14 $20 07 Liod Look Siio $12 $94610MOBE 4B Mc 109K Fl025 $20 2$ $25 50Doog 0i OCS$25 * 50Fo 5170 $2 5149SB I0 $1oole, 4089 $10so .512 $6C Wooho,k P40 $15RE BORE TO ADD20 -~ 47B Mo Molligo $12POE HANDLING BINS MODELOOMS QUICKEST MAIL SERVICE January 1976 73 Sflu 4 vOiCe PeiCtS SI 1401dfl AgO jflhjdLJLKjlilft ito UJA.n Ra.isteiisciaesi RI/Salt b0diiO. fS.mat 545 etitog *i MYIfl Shiv SRSet OfOpOSte-gO paid iSqflhRy Dtie
Edition: Model Aviation - 1976/01
Page Numbers: 36, 37, 38, 39, 40, 73
mp Once popular profile shape America modeling Model flies best into-wind slightly right wind take-off stably rolls back right poor launch h dALE KORDA SCALING DOWN structuring model genuine treat barely seven years old Dick Korda blew everyone off field 45-minuteplus flight 1938 Wakefield compe tition have wanted ever since make duplicate design still wins lot contests both Old Timer pre-1941 under AMA Unlimited Rubber rules also named among Best Ten Models Year 1973 Natio nal Free Flight Society NFFS may Wow cate gory can say half-size repli ca flew absolutely perfectly ROG rise off ground very first time Its pleasing model Weighing about ounce powered four strands Sig 3/16 Contest rub ber ship capable slow right circ ling flights 30 seconds better wound half-capacity Thirty sec onds eternity thats sure So ideal schoolyard ballpark project full winds thermal proximity sure affix return address All-balsa half-scale model historys famous machines will 30 seconds half wound Preparations From plans pho tos obvious going fairly simple short building task Care fully select wood both light straight Wing tail pieces should warp-free A-grain note grain pictures stock Two 3 X 36 sheets will make various formers bulk heads gussets etc fuselage sides may come out single sheet 1/32 stock dont mind little patchwork rear side should fairly firm wood swirly quarter-grained stuff being best choice lot has written lately about glues adhesives model workwhich best job heaviest exactly use seldom covered detail So before go tear ing up beautiful wood lets get glueing moment view strong light neat-appearing models particularly kind dealing best assembled Titebond equivalent aliphatic resin product big globs running over place very little good glue non-filleting develops its true character used relatively thin amounts two appli cations being better heavy technique known double-glueing takes small additional amount time saves endless grief later hit wall speak way thin Titebond few drops water shake up thoroughly repeat until stuff looks like evaporated milk viscosity too thick too thin Put thin coat mating surfaces brush Work small puddle poured saucer piece Saran Wrap Always try both sides joint have wiggle some tight places times Let dryten minutes average dampest days Now ready assemble whatever pieces hand apply second very thin coat again both sides joint push together Titehond has excellent grab potential will find good side-benefit double-glueing everything operations can done hand air need held few seconds drafting tape maintain align ment whole procedure fast strong light very neat-appearing Doing Make up patterns wing tail group fuselage sides Xeroxing tracing transfer filing card stock similar material Glue 1/16 1/8 spruce stock wing blank leading edge Flat-sand material before cutting successive grades 220- 400-grit sandpaper third sheet around 3/8 1 e batten wood works well Mark outlines important verticals wing breaks bulkheads 36 Model Aviation parts ready serious building Nose rear-rudder peg doublers place nose plug already assembled something like BIC Banana pen Give bottom wing blank coat thinned clear dope right over mark ings Sand smooth Cut everything shape Now good time work up bulkheads few gus sets rough out nose plug add doublers nose motor peg areas etc thin plywood bits wheels rib pattern nose face can cut good pair shears Just dont let you-know-who catch Carefully shape ribs 3/32 sheetscrap lftheyarecut well sharp knife should need no sanding Ditto bulkheads Parts need edge-sanding wing tail fuselage sides Now time begin putting mag nificent prefabrication together pre-glue everything first Join fuselage sides rear Glue front third wing rib bottom wing blank Eyeball good po sition As soon joints have set up about 20 minutes-begin bulkhead instal lation D working brush little glue back two-thirds wing rib pull down gently pin form wing camber Go easy pins Install bulkheads C B order Next add 1/16 sq top bottom fuselage spreaders Try fit finger-tight bowing stall double glueing Bend up land ing gear fits snugly front C bulkhead line up several di rections fix place good cov ering five-minute epoxy photo graph shows very clearly As soon epoxy set lay gussets illus trated Cut number pieces 1/32 sheet fuselage top bottom covering grain should go across fuselage Double glue install hold place drafting tape Please use drafting tape otherwise things will come apart removal Block-sand fuselage four sides polyhedral wing joints accom plished time-honored hand-launched glider method Cut wing four main panels after ribs dry bevel/sand proper angle No 220-grit sandpaper seems work best Test fit Pin down inner panels glue tip dihedral first center last Again go easy pins Things should looking like Half Korda now Put plywood nose plate Trial-fit nose plug finishsand Drill ream small holes tub ing noseplug wheels tubes can held place very small amount five-minute epoxy virtually bullet-proof light model such thisturn page January 1976 37 Left Author begins fuselage assembly joining tail post loca ting bulkhead D followed C B order Above Fuselage complete except top bottom balsa sheeting Above Top bottom sheeting pieces held drafting tape until glue dries used Titebond thinned lightly watersee text Right half-size model gear installation simple U 03 0 4 Li 030 -JD 4 C Wa 03J DW H wLiLi o1 H OC n -403 o 4J 2 -4 H -4Li 4I 2 LiCD z 4 COLi 0 H Li-4 I 0 0 H 0 Li - CD 4 -4 4 H Li 03 Z 0-4 H 4 03 4 Z 0 Li CC -4H 04z 40. 03 U Co __ 4 CCN H0 z CD03 Lid 053 z 4W 03 H03 Co-4 C -4 03 0 4 5Li 40 4Li F12 Li403 JIJ10aF 4 50H aLJZI C0 0 03 U H 4 H half k@ ida replica sport rubber airplane012456 1iimSsaii t/wamtaaa point good idea cut out numbers letters plus window trim tissue attach thin clear dope everything looks right give parts except bottom wing coat thin pasticized clear dope Sig Lite-Coat works very well dry sand whole works well-worn piece 400- 500-grit paper Attach stabilizer fin sub-fin using best eyeball methods Note 1/16 1/8 stifleners fin bits Put wing tail hold-down dowels rear motor peg Cut hole access rubber motor See pictures Sand off rough edges Get front end together bending up prop shaft add prop washers plastic propellers avail38 Model Aviation 0HLi 0 H H NN0 303 H 3/DH HH LiZ Li5 I- 03 N H C C able freewheeling simple 900 bend required finish job Outings Make up four-strand motor 3/16 rubber should little longer motor peg nose distance Refer Sport Modeler Sept 1974 Clarence Mathers excellent advice operation Fish motor place secure Use winding hook front model can safely wound prop off See photograph Check bal ance point indoors certain plus minus no eighth January 1976 39 front third 3/32 ribs cemented sheet-balsa wing blank couple pins rib may make easier rear two-thirds ribs glue coated pulled down gently held place couple pins Camber automatic Above By placing panel butt ends edge work board dihedral angle sanded block sander Right polyhedraled wing tips joined center panels sure have left right wings Below Center section wing doubled center ribs triangular gussets glued both edges Close-up detail nose plug tube bearing teflon washers An 8-1/4 plastic prop used four strands 3/16 rubber Prop free-wheelingit rotates rubber wound down Half -Korda inch plan location Add clay fore aft set right Now fun part Try few gentle hand glides about knee high slightly nose-down airplane no soarer should proceed stable fashion about eight ten feet pronounced dorks Take little time balance check gliding procedures Incidentally believe first flights should ROG crank about 200 turns winder get fix wind let rip either directly very slightly right side off-wind HaIf-Korda along its big brothers flies almost crash-proof forced little bit right under power prototype did naturally worried about ahead time put little right- down-thrust either drill nose plug adding paper match stick top left side nose plug before launch Glue place flight trim normal Glide may right left straight ahead better let model seek its own way first motor used will take about 500550 turns things generally still fun less tense about 400 350 turns ROG climb still steep flights very satisfying Small models like always losing front ends seems after rubber continued page 73 Right Plywood wheel has piece metal tube bearinguse five-minute epoxy hold drop end axle retain wheel 40 Model Aviation Above If exercise patience dont rush model could like Right Although author test flies 200 turns uses 300 normally stretch winding permits 500 550 turns Ready go flying full-size machine built-up construction won 1938 Wakefield flight 45 mm plus cially aft Slide bat tery servos etc fore-afi obtain balance point Remember check CG accessories installed pushrods fuel tank prop etc Control Surface Movements Initially set up surface movements follow ing Elevator Aileron -3/16 up down Rudder % right left Radio Installation Use servo trays possible 4 BITS will accept three KPS-12 type servos mounted side-by-side tray Use aileron servo side mount bracket Wrap battery foam install receiver-servo area use NyRod acceptable rudder pushrod should used elevator sure aileron control horns free after installation wing Some filing wing hold-down blocks may necessary Use flex cable engine throttle hook-up Flying 4 BITS will very re sponsive Set control surface movements suit individual preference never set response allow snap-roll aircraft raced find point increase elevator throw until snap-roll obtained back-off hole control horn general sport flying set control surface movements limited flying ability Always however start out soft controls Youll find 4 BITS fun aircraft youve ever flown racing watch out guys -Korda/Oldenkamp continued page 40 winds down free-wheeling begins particularly shaft gets bent little landing knock vibration sets An easy way cure since nose plug gets lot wear simply cant made lit forever coat fiveminute epoxy slip place pull out let dry doesnt work put piece masking tape top outer joint just after winding point being noseplug should free fall out airplane hits something gets upset upon landing References Balsa plywood spruce music wire rubber strip dowels tubing tissue Lite-Coat dope rubber lubricant etc available directly Sig Manu facturing Co Montezuma Iowa local hobby shops Sandpaper Titebond glue Five-Mm ute Epoxy glue--from variety hardware stores Plastic Propellers Peck-Polymers has some excellent units up 9/2 diameter Peck-Polymers P0 Box 2498 La Mesa Ca 92041 Rubber Winding Hook Jim Crockett Replicas l442 N Fruit Ave Fresno Ca 93728 PermaGloss Coverite may newest revolution covering material Heres unsolicited testimonial editor RC Modeler Mr Don Dewey quote part August 1975 issue .. iron-on plastic fabrics several minor dis advantages Among high gloss plastic look could hidden several coats exhaust residue addition materials have tendency sag during periods extreme humidity changes. d like have next model covered fabric far stronger silk covers up minor surface imperfections actually contains four coats paint realistic painted fabric appearance no plastic sheen will never shatter sag scratch best all have iron sanded framework l find aircraft covered Coverite PermaGloss will have lightest yet strongest coverings can possibly apply addition will have painted fabric appearance would find difficult equal silk dope aircraft particularly strength-to-weight ratio w standpoint realistic appearance strength durability ease repair mention ease application aGloss may newest revolution covering materials C0Vi-i i Chestnut St Phila Pa 19106 U QUE PLANS FOR GAS MODELERS PRICE INCLUDE PATTERNO 42 Eoig P26A $14 . 45 BOio 940-3 P12 $9 0ip OR] $7 47 C Bk P4-E $15 pod XIII $10 47 Oohook F11C-2 $15 l 17 $9 47 CoIC BeIIdie $11 Pp $8 48 GM GlodMbe $10 OHBoo 0 $9 49 SI Koode P017 $10 FBI 2B6C $11 $0 Polith Fl PO $10 rpe 46 Plo] DIII 50, $9 82 Slooo TW SB7 $10 Sop 07F1$11 $7 Co 010 FoIoo $15 54 MoMB-i$14 57 CoSO2C1 Soo $14 57 Boote 0,i0oiI$95B Boejo0B9Boobe$9 6AEGGVBoobeS1260Doog 0-SB00$$12 ___66 Coo 2GSI1ockef5F1 $14 $20 07 Liod Look Siio $12 $94610MOBE 4B Mc 109K Fl025 $20 2$ $25 50Doog 0i OCS$25 * 50Fo 5170 $2 5149SB I0 $1oole, 4089 $10so .512 $6C Wooho,k P40 $15RE BORE TO ADD20 -~ 47B Mo Molligo $12POE HANDLING BINS MODELOOMS QUICKEST MAIL SERVICE January 1976 73 Sflu 4 vOiCe PeiCtS SI 1401dfl AgO jflhjdLJLKjlilft ito UJA.n Ra.isteiisciaesi RI/Salt b0diiO. fS.mat 545 etitog *i MYIfl Shiv SRSet OfOpOSte-gO paid iSqflhRy Dtie
Edition: Model Aviation - 1976/01
Page Numbers: 36, 37, 38, 39, 40, 73
mp Once popular profile shape America modeling Model flies best into-wind slightly right wind take-off stably rolls back right poor launch h dALE KORDA SCALING DOWN structuring model genuine treat barely seven years old Dick Korda blew everyone off field 45-minuteplus flight 1938 Wakefield compe tition have wanted ever since make duplicate design still wins lot contests both Old Timer pre-1941 under AMA Unlimited Rubber rules also named among Best Ten Models Year 1973 Natio nal Free Flight Society NFFS may Wow cate gory can say half-size repli ca flew absolutely perfectly ROG rise off ground very first time Its pleasing model Weighing about ounce powered four strands Sig 3/16 Contest rub ber ship capable slow right circ ling flights 30 seconds better wound half-capacity Thirty sec onds eternity thats sure So ideal schoolyard ballpark project full winds thermal proximity sure affix return address All-balsa half-scale model historys famous machines will 30 seconds half wound Preparations From plans pho tos obvious going fairly simple short building task Care fully select wood both light straight Wing tail pieces should warp-free A-grain note grain pictures stock Two 3 X 36 sheets will make various formers bulk heads gussets etc fuselage sides may come out single sheet 1/32 stock dont mind little patchwork rear side should fairly firm wood swirly quarter-grained stuff being best choice lot has written lately about glues adhesives model workwhich best job heaviest exactly use seldom covered detail So before go tear ing up beautiful wood lets get glueing moment view strong light neat-appearing models particularly kind dealing best assembled Titebond equivalent aliphatic resin product big globs running over place very little good glue non-filleting develops its true character used relatively thin amounts two appli cations being better heavy technique known double-glueing takes small additional amount time saves endless grief later hit wall speak way thin Titebond few drops water shake up thoroughly repeat until stuff looks like evaporated milk viscosity too thick too thin Put thin coat mating surfaces brush Work small puddle poured saucer piece Saran Wrap Always try both sides joint have wiggle some tight places times Let dryten minutes average dampest days Now ready assemble whatever pieces hand apply second very thin coat again both sides joint push together Titehond has excellent grab potential will find good side-benefit double-glueing everything operations can done hand air need held few seconds drafting tape maintain align ment whole procedure fast strong light very neat-appearing Doing Make up patterns wing tail group fuselage sides Xeroxing tracing transfer filing card stock similar material Glue 1/16 1/8 spruce stock wing blank leading edge Flat-sand material before cutting successive grades 220- 400-grit sandpaper third sheet around 3/8 1 e batten wood works well Mark outlines important verticals wing breaks bulkheads 36 Model Aviation parts ready serious building Nose rear-rudder peg doublers place nose plug already assembled something like BIC Banana pen Give bottom wing blank coat thinned clear dope right over mark ings Sand smooth Cut everything shape Now good time work up bulkheads few gus sets rough out nose plug add doublers nose motor peg areas etc thin plywood bits wheels rib pattern nose face can cut good pair shears Just dont let you-know-who catch Carefully shape ribs 3/32 sheetscrap lftheyarecut well sharp knife should need no sanding Ditto bulkheads Parts need edge-sanding wing tail fuselage sides Now time begin putting mag nificent prefabrication together pre-glue everything first Join fuselage sides rear Glue front third wing rib bottom wing blank Eyeball good po sition As soon joints have set up about 20 minutes-begin bulkhead instal lation D working brush little glue back two-thirds wing rib pull down gently pin form wing camber Go easy pins Install bulkheads C B order Next add 1/16 sq top bottom fuselage spreaders Try fit finger-tight bowing stall double glueing Bend up land ing gear fits snugly front C bulkhead line up several di rections fix place good cov ering five-minute epoxy photo graph shows very clearly As soon epoxy set lay gussets illus trated Cut number pieces 1/32 sheet fuselage top bottom covering grain should go across fuselage Double glue install hold place drafting tape Please use drafting tape otherwise things will come apart removal Block-sand fuselage four sides polyhedral wing joints accom plished time-honored hand-launched glider method Cut wing four main panels after ribs dry bevel/sand proper angle No 220-grit sandpaper seems work best Test fit Pin down inner panels glue tip dihedral first center last Again go easy pins Things should looking like Half Korda now Put plywood nose plate Trial-fit nose plug finishsand Drill ream small holes tub ing noseplug wheels tubes can held place very small amount five-minute epoxy virtually bullet-proof light model such thisturn page January 1976 37 Left Author begins fuselage assembly joining tail post loca ting bulkhead D followed C B order Above Fuselage complete except top bottom balsa sheeting Above Top bottom sheeting pieces held drafting tape until glue dries used Titebond thinned lightly watersee text Right half-size model gear installation simple U 03 0 4 Li 030 -JD 4 C Wa 03J DW H wLiLi o1 H OC n -403 o 4J 2 -4 H -4Li 4I 2 LiCD z 4 COLi 0 H Li-4 I 0 0 H 0 Li - CD 4 -4 4 H Li 03 Z 0-4 H 4 03 4 Z 0 Li CC -4H 04z 40. 03 U Co __ 4 CCN H0 z CD03 Lid 053 z 4W 03 H03 Co-4 C -4 03 0 4 5Li 40 4Li F12 Li403 JIJ10aF 4 50H aLJZI C0 0 03 U H 4 H half k@ ida replica sport rubber airplane012456 1iimSsaii t/wamtaaa point good idea cut out numbers letters plus window trim tissue attach thin clear dope everything looks right give parts except bottom wing coat thin pasticized clear dope Sig Lite-Coat works very well dry sand whole works well-worn piece 400- 500-grit paper Attach stabilizer fin sub-fin using best eyeball methods Note 1/16 1/8 stifleners fin bits Put wing tail hold-down dowels rear motor peg Cut hole access rubber motor See pictures Sand off rough edges Get front end together bending up prop shaft add prop washers plastic propellers avail38 Model Aviation 0HLi 0 H H NN0 303 H 3/DH HH LiZ Li5 I- 03 N H C C able freewheeling simple 900 bend required finish job Outings Make up four-strand motor 3/16 rubber should little longer motor peg nose distance Refer Sport Modeler Sept 1974 Clarence Mathers excellent advice operation Fish motor place secure Use winding hook front model can safely wound prop off See photograph Check bal ance point indoors certain plus minus no eighth January 1976 39 front third 3/32 ribs cemented sheet-balsa wing blank couple pins rib may make easier rear two-thirds ribs glue coated pulled down gently held place couple pins Camber automatic Above By placing panel butt ends edge work board dihedral angle sanded block sander Right polyhedraled wing tips joined center panels sure have left right wings Below Center section wing doubled center ribs triangular gussets glued both edges Close-up detail nose plug tube bearing teflon washers An 8-1/4 plastic prop used four strands 3/16 rubber Prop free-wheelingit rotates rubber wound down Half -Korda inch plan location Add clay fore aft set right Now fun part Try few gentle hand glides about knee high slightly nose-down airplane no soarer should proceed stable fashion about eight ten feet pronounced dorks Take little time balance check gliding procedures Incidentally believe first flights should ROG crank about 200 turns winder get fix wind let rip either directly very slightly right side off-wind HaIf-Korda along its big brothers flies almost crash-proof forced little bit right under power prototype did naturally worried about ahead time put little right- down-thrust either drill nose plug adding paper match stick top left side nose plug before launch Glue place flight trim normal Glide may right left straight ahead better let model seek its own way first motor used will take about 500550 turns things generally still fun less tense about 400 350 turns ROG climb still steep flights very satisfying Small models like always losing front ends seems after rubber continued page 73 Right Plywood wheel has piece metal tube bearinguse five-minute epoxy hold drop end axle retain wheel 40 Model Aviation Above If exercise patience dont rush model could like Right Although author test flies 200 turns uses 300 normally stretch winding permits 500 550 turns Ready go flying full-size machine built-up construction won 1938 Wakefield flight 45 mm plus cially aft Slide bat tery servos etc fore-afi obtain balance point Remember check CG accessories installed pushrods fuel tank prop etc Control Surface Movements Initially set up surface movements follow ing Elevator Aileron -3/16 up down Rudder % right left Radio Installation Use servo trays possible 4 BITS will accept three KPS-12 type servos mounted side-by-side tray Use aileron servo side mount bracket Wrap battery foam install receiver-servo area use NyRod acceptable rudder pushrod should used elevator sure aileron control horns free after installation wing Some filing wing hold-down blocks may necessary Use flex cable engine throttle hook-up Flying 4 BITS will very re sponsive Set control surface movements suit individual preference never set response allow snap-roll aircraft raced find point increase elevator throw until snap-roll obtained back-off hole control horn general sport flying set control surface movements limited flying ability Always however start out soft controls Youll find 4 BITS fun aircraft youve ever flown racing watch out guys -Korda/Oldenkamp continued page 40 winds down free-wheeling begins particularly shaft gets bent little landing knock vibration sets An easy way cure since nose plug gets lot wear simply cant made lit forever coat fiveminute epoxy slip place pull out let dry doesnt work put piece masking tape top outer joint just after winding point being noseplug should free fall out airplane hits something gets upset upon landing References Balsa plywood spruce music wire rubber strip dowels tubing tissue Lite-Coat dope rubber lubricant etc available directly Sig Manu facturing Co Montezuma Iowa local hobby shops Sandpaper Titebond glue Five-Mm ute Epoxy glue--from variety hardware stores Plastic Propellers Peck-Polymers has some excellent units up 9/2 diameter Peck-Polymers P0 Box 2498 La Mesa Ca 92041 Rubber Winding Hook Jim Crockett Replicas l442 N Fruit Ave Fresno Ca 93728 PermaGloss Coverite may newest revolution covering material Heres unsolicited testimonial editor RC Modeler Mr Don Dewey quote part August 1975 issue .. iron-on plastic fabrics several minor dis advantages Among high gloss plastic look could hidden several coats exhaust residue addition materials have tendency sag during periods extreme humidity changes. d like have next model covered fabric far stronger silk covers up minor surface imperfections actually contains four coats paint realistic painted fabric appearance no plastic sheen will never shatter sag scratch best all have iron sanded framework l find aircraft covered Coverite PermaGloss will have lightest yet strongest coverings can possibly apply addition will have painted fabric appearance would find difficult equal silk dope aircraft particularly strength-to-weight ratio w standpoint realistic appearance strength durability ease repair mention ease application aGloss may newest revolution covering materials C0Vi-i i Chestnut St Phila Pa 19106 U QUE PLANS FOR GAS MODELERS PRICE INCLUDE PATTERNO 42 Eoig P26A $14 . 45 BOio 940-3 P12 $9 0ip OR] $7 47 C Bk P4-E $15 pod XIII $10 47 Oohook F11C-2 $15 l 17 $9 47 CoIC BeIIdie $11 Pp $8 48 GM GlodMbe $10 OHBoo 0 $9 49 SI Koode P017 $10 FBI 2B6C $11 $0 Polith Fl PO $10 rpe 46 Plo] DIII 50, $9 82 Slooo TW SB7 $10 Sop 07F1$11 $7 Co 010 FoIoo $15 54 MoMB-i$14 57 CoSO2C1 Soo $14 57 Boote 0,i0oiI$95B Boejo0B9Boobe$9 6AEGGVBoobeS1260Doog 0-SB00$$12 ___66 Coo 2GSI1ockef5F1 $14 $20 07 Liod Look Siio $12 $94610MOBE 4B Mc 109K Fl025 $20 2$ $25 50Doog 0i OCS$25 * 50Fo 5170 $2 5149SB I0 $1oole, 4089 $10so .512 $6C Wooho,k P40 $15RE BORE TO ADD20 -~ 47B Mo Molligo $12POE HANDLING BINS MODELOOMS QUICKEST MAIL SERVICE January 1976 73 Sflu 4 vOiCe PeiCtS SI 1401dfl AgO jflhjdLJLKjlilft ito UJA.n Ra.isteiisciaesi RI/Salt b0diiO. fS.mat 545 etitog *i MYIfl Shiv SRSet OfOpOSte-gO paid iSqflhRy Dtie
Edition: Model Aviation - 1976/01
Page Numbers: 36, 37, 38, 39, 40, 73
mp Once popular profile shape America modeling Model flies best into-wind slightly right wind take-off stably rolls back right poor launch h dALE KORDA SCALING DOWN structuring model genuine treat barely seven years old Dick Korda blew everyone off field 45-minuteplus flight 1938 Wakefield compe tition have wanted ever since make duplicate design still wins lot contests both Old Timer pre-1941 under AMA Unlimited Rubber rules also named among Best Ten Models Year 1973 Natio nal Free Flight Society NFFS may Wow cate gory can say half-size repli ca flew absolutely perfectly ROG rise off ground very first time Its pleasing model Weighing about ounce powered four strands Sig 3/16 Contest rub ber ship capable slow right circ ling flights 30 seconds better wound half-capacity Thirty sec onds eternity thats sure So ideal schoolyard ballpark project full winds thermal proximity sure affix return address All-balsa half-scale model historys famous machines will 30 seconds half wound Preparations From plans pho tos obvious going fairly simple short building task Care fully select wood both light straight Wing tail pieces should warp-free A-grain note grain pictures stock Two 3 X 36 sheets will make various formers bulk heads gussets etc fuselage sides may come out single sheet 1/32 stock dont mind little patchwork rear side should fairly firm wood swirly quarter-grained stuff being best choice lot has written lately about glues adhesives model workwhich best job heaviest exactly use seldom covered detail So before go tear ing up beautiful wood lets get glueing moment view strong light neat-appearing models particularly kind dealing best assembled Titebond equivalent aliphatic resin product big globs running over place very little good glue non-filleting develops its true character used relatively thin amounts two appli cations being better heavy technique known double-glueing takes small additional amount time saves endless grief later hit wall speak way thin Titebond few drops water shake up thoroughly repeat until stuff looks like evaporated milk viscosity too thick too thin Put thin coat mating surfaces brush Work small puddle poured saucer piece Saran Wrap Always try both sides joint have wiggle some tight places times Let dryten minutes average dampest days Now ready assemble whatever pieces hand apply second very thin coat again both sides joint push together Titehond has excellent grab potential will find good side-benefit double-glueing everything operations can done hand air need held few seconds drafting tape maintain align ment whole procedure fast strong light very neat-appearing Doing Make up patterns wing tail group fuselage sides Xeroxing tracing transfer filing card stock similar material Glue 1/16 1/8 spruce stock wing blank leading edge Flat-sand material before cutting successive grades 220- 400-grit sandpaper third sheet around 3/8 1 e batten wood works well Mark outlines important verticals wing breaks bulkheads 36 Model Aviation parts ready serious building Nose rear-rudder peg doublers place nose plug already assembled something like BIC Banana pen Give bottom wing blank coat thinned clear dope right over mark ings Sand smooth Cut everything shape Now good time work up bulkheads few gus sets rough out nose plug add doublers nose motor peg areas etc thin plywood bits wheels rib pattern nose face can cut good pair shears Just dont let you-know-who catch Carefully shape ribs 3/32 sheetscrap lftheyarecut well sharp knife should need no sanding Ditto bulkheads Parts need edge-sanding wing tail fuselage sides Now time begin putting mag nificent prefabrication together pre-glue everything first Join fuselage sides rear Glue front third wing rib bottom wing blank Eyeball good po sition As soon joints have set up about 20 minutes-begin bulkhead instal lation D working brush little glue back two-thirds wing rib pull down gently pin form wing camber Go easy pins Install bulkheads C B order Next add 1/16 sq top bottom fuselage spreaders Try fit finger-tight bowing stall double glueing Bend up land ing gear fits snugly front C bulkhead line up several di rections fix place good cov ering five-minute epoxy photo graph shows very clearly As soon epoxy set lay gussets illus trated Cut number pieces 1/32 sheet fuselage top bottom covering grain should go across fuselage Double glue install hold place drafting tape Please use drafting tape otherwise things will come apart removal Block-sand fuselage four sides polyhedral wing joints accom plished time-honored hand-launched glider method Cut wing four main panels after ribs dry bevel/sand proper angle No 220-grit sandpaper seems work best Test fit Pin down inner panels glue tip dihedral first center last Again go easy pins Things should looking like Half Korda now Put plywood nose plate Trial-fit nose plug finishsand Drill ream small holes tub ing noseplug wheels tubes can held place very small amount five-minute epoxy virtually bullet-proof light model such thisturn page January 1976 37 Left Author begins fuselage assembly joining tail post loca ting bulkhead D followed C B order Above Fuselage complete except top bottom balsa sheeting Above Top bottom sheeting pieces held drafting tape until glue dries used Titebond thinned lightly watersee text Right half-size model gear installation simple U 03 0 4 Li 030 -JD 4 C Wa 03J DW H wLiLi o1 H OC n -403 o 4J 2 -4 H -4Li 4I 2 LiCD z 4 COLi 0 H Li-4 I 0 0 H 0 Li - CD 4 -4 4 H Li 03 Z 0-4 H 4 03 4 Z 0 Li CC -4H 04z 40. 03 U Co __ 4 CCN H0 z CD03 Lid 053 z 4W 03 H03 Co-4 C -4 03 0 4 5Li 40 4Li F12 Li403 JIJ10aF 4 50H aLJZI C0 0 03 U H 4 H half k@ ida replica sport rubber airplane012456 1iimSsaii t/wamtaaa point good idea cut out numbers letters plus window trim tissue attach thin clear dope everything looks right give parts except bottom wing coat thin pasticized clear dope Sig Lite-Coat works very well dry sand whole works well-worn piece 400- 500-grit paper Attach stabilizer fin sub-fin using best eyeball methods Note 1/16 1/8 stifleners fin bits Put wing tail hold-down dowels rear motor peg Cut hole access rubber motor See pictures Sand off rough edges Get front end together bending up prop shaft add prop washers plastic propellers avail38 Model Aviation 0HLi 0 H H NN0 303 H 3/DH HH LiZ Li5 I- 03 N H C C able freewheeling simple 900 bend required finish job Outings Make up four-strand motor 3/16 rubber should little longer motor peg nose distance Refer Sport Modeler Sept 1974 Clarence Mathers excellent advice operation Fish motor place secure Use winding hook front model can safely wound prop off See photograph Check bal ance point indoors certain plus minus no eighth January 1976 39 front third 3/32 ribs cemented sheet-balsa wing blank couple pins rib may make easier rear two-thirds ribs glue coated pulled down gently held place couple pins Camber automatic Above By placing panel butt ends edge work board dihedral angle sanded block sander Right polyhedraled wing tips joined center panels sure have left right wings Below Center section wing doubled center ribs triangular gussets glued both edges Close-up detail nose plug tube bearing teflon washers An 8-1/4 plastic prop used four strands 3/16 rubber Prop free-wheelingit rotates rubber wound down Half -Korda inch plan location Add clay fore aft set right Now fun part Try few gentle hand glides about knee high slightly nose-down airplane no soarer should proceed stable fashion about eight ten feet pronounced dorks Take little time balance check gliding procedures Incidentally believe first flights should ROG crank about 200 turns winder get fix wind let rip either directly very slightly right side off-wind HaIf-Korda along its big brothers flies almost crash-proof forced little bit right under power prototype did naturally worried about ahead time put little right- down-thrust either drill nose plug adding paper match stick top left side nose plug before launch Glue place flight trim normal Glide may right left straight ahead better let model seek its own way first motor used will take about 500550 turns things generally still fun less tense about 400 350 turns ROG climb still steep flights very satisfying Small models like always losing front ends seems after rubber continued page 73 Right Plywood wheel has piece metal tube bearinguse five-minute epoxy hold drop end axle retain wheel 40 Model Aviation Above If exercise patience dont rush model could like Right Although author test flies 200 turns uses 300 normally stretch winding permits 500 550 turns Ready go flying full-size machine built-up construction won 1938 Wakefield flight 45 mm plus cially aft Slide bat tery servos etc fore-afi obtain balance point Remember check CG accessories installed pushrods fuel tank prop etc Control Surface Movements Initially set up surface movements follow ing Elevator Aileron -3/16 up down Rudder % right left Radio Installation Use servo trays possible 4 BITS will accept three KPS-12 type servos mounted side-by-side tray Use aileron servo side mount bracket Wrap battery foam install receiver-servo area use NyRod acceptable rudder pushrod should used elevator sure aileron control horns free after installation wing Some filing wing hold-down blocks may necessary Use flex cable engine throttle hook-up Flying 4 BITS will very re sponsive Set control surface movements suit individual preference never set response allow snap-roll aircraft raced find point increase elevator throw until snap-roll obtained back-off hole control horn general sport flying set control surface movements limited flying ability Always however start out soft controls Youll find 4 BITS fun aircraft youve ever flown racing watch out guys -Korda/Oldenkamp continued page 40 winds down free-wheeling begins particularly shaft gets bent little landing knock vibration sets An easy way cure since nose plug gets lot wear simply cant made lit forever coat fiveminute epoxy slip place pull out let dry doesnt work put piece masking tape top outer joint just after winding point being noseplug should free fall out airplane hits something gets upset upon landing References Balsa plywood spruce music wire rubber strip dowels tubing tissue Lite-Coat dope rubber lubricant etc available directly Sig Manu facturing Co Montezuma Iowa local hobby shops Sandpaper Titebond glue Five-Mm ute Epoxy glue--from variety hardware stores Plastic Propellers Peck-Polymers has some excellent units up 9/2 diameter Peck-Polymers P0 Box 2498 La Mesa Ca 92041 Rubber Winding Hook Jim Crockett Replicas l442 N Fruit Ave Fresno Ca 93728 PermaGloss Coverite may newest revolution covering material Heres unsolicited testimonial editor RC Modeler Mr Don Dewey quote part August 1975 issue .. iron-on plastic fabrics several minor dis advantages Among high gloss plastic look could hidden several coats exhaust residue addition materials have tendency sag during periods extreme humidity changes. d like have next model covered fabric far stronger silk covers up minor surface imperfections actually contains four coats paint realistic painted fabric appearance no plastic sheen will never shatter sag scratch best all have iron sanded framework l find aircraft covered Coverite PermaGloss will have lightest yet strongest coverings can possibly apply addition will have painted fabric appearance would find difficult equal silk dope aircraft particularly strength-to-weight ratio w standpoint realistic appearance strength durability ease repair mention ease application aGloss may newest revolution covering materials C0Vi-i i Chestnut St Phila Pa 19106 U QUE PLANS FOR GAS MODELERS PRICE INCLUDE PATTERNO 42 Eoig P26A $14 . 45 BOio 940-3 P12 $9 0ip OR] $7 47 C Bk P4-E $15 pod XIII $10 47 Oohook F11C-2 $15 l 17 $9 47 CoIC BeIIdie $11 Pp $8 48 GM GlodMbe $10 OHBoo 0 $9 49 SI Koode P017 $10 FBI 2B6C $11 $0 Polith Fl PO $10 rpe 46 Plo] DIII 50, $9 82 Slooo TW SB7 $10 Sop 07F1$11 $7 Co 010 FoIoo $15 54 MoMB-i$14 57 CoSO2C1 Soo $14 57 Boote 0,i0oiI$95B Boejo0B9Boobe$9 6AEGGVBoobeS1260Doog 0-SB00$$12 ___66 Coo 2GSI1ockef5F1 $14 $20 07 Liod Look Siio $12 $94610MOBE 4B Mc 109K Fl025 $20 2$ $25 50Doog 0i OCS$25 * 50Fo 5170 $2 5149SB I0 $1oole, 4089 $10so .512 $6C Wooho,k P40 $15RE BORE TO ADD20 -~ 47B Mo Molligo $12POE HANDLING BINS MODELOOMS QUICKEST MAIL SERVICE January 1976 73 Sflu 4 vOiCe PeiCtS SI 1401dfl AgO jflhjdLJLKjlilft ito UJA.n Ra.isteiisciaesi RI/Salt b0diiO. fS.mat 545 etitog *i MYIfl Shiv SRSet OfOpOSte-gO paid iSqflhRy Dtie
Edition: Model Aviation - 1976/01
Page Numbers: 36, 37, 38, 39, 40, 73
mp Once popular profile shape America modeling Model flies best into-wind slightly right wind take-off stably rolls back right poor launch h dALE KORDA SCALING DOWN structuring model genuine treat barely seven years old Dick Korda blew everyone off field 45-minuteplus flight 1938 Wakefield compe tition have wanted ever since make duplicate design still wins lot contests both Old Timer pre-1941 under AMA Unlimited Rubber rules also named among Best Ten Models Year 1973 Natio nal Free Flight Society NFFS may Wow cate gory can say half-size repli ca flew absolutely perfectly ROG rise off ground very first time Its pleasing model Weighing about ounce powered four strands Sig 3/16 Contest rub ber ship capable slow right circ ling flights 30 seconds better wound half-capacity Thirty sec onds eternity thats sure So ideal schoolyard ballpark project full winds thermal proximity sure affix return address All-balsa half-scale model historys famous machines will 30 seconds half wound Preparations From plans pho tos obvious going fairly simple short building task Care fully select wood both light straight Wing tail pieces should warp-free A-grain note grain pictures stock Two 3 X 36 sheets will make various formers bulk heads gussets etc fuselage sides may come out single sheet 1/32 stock dont mind little patchwork rear side should fairly firm wood swirly quarter-grained stuff being best choice lot has written lately about glues adhesives model workwhich best job heaviest exactly use seldom covered detail So before go tear ing up beautiful wood lets get glueing moment view strong light neat-appearing models particularly kind dealing best assembled Titebond equivalent aliphatic resin product big globs running over place very little good glue non-filleting develops its true character used relatively thin amounts two appli cations being better heavy technique known double-glueing takes small additional amount time saves endless grief later hit wall speak way thin Titebond few drops water shake up thoroughly repeat until stuff looks like evaporated milk viscosity too thick too thin Put thin coat mating surfaces brush Work small puddle poured saucer piece Saran Wrap Always try both sides joint have wiggle some tight places times Let dryten minutes average dampest days Now ready assemble whatever pieces hand apply second very thin coat again both sides joint push together Titehond has excellent grab potential will find good side-benefit double-glueing everything operations can done hand air need held few seconds drafting tape maintain align ment whole procedure fast strong light very neat-appearing Doing Make up patterns wing tail group fuselage sides Xeroxing tracing transfer filing card stock similar material Glue 1/16 1/8 spruce stock wing blank leading edge Flat-sand material before cutting successive grades 220- 400-grit sandpaper third sheet around 3/8 1 e batten wood works well Mark outlines important verticals wing breaks bulkheads 36 Model Aviation parts ready serious building Nose rear-rudder peg doublers place nose plug already assembled something like BIC Banana pen Give bottom wing blank coat thinned clear dope right over mark ings Sand smooth Cut everything shape Now good time work up bulkheads few gus sets rough out nose plug add doublers nose motor peg areas etc thin plywood bits wheels rib pattern nose face can cut good pair shears Just dont let you-know-who catch Carefully shape ribs 3/32 sheetscrap lftheyarecut well sharp knife should need no sanding Ditto bulkheads Parts need edge-sanding wing tail fuselage sides Now time begin putting mag nificent prefabrication together pre-glue everything first Join fuselage sides rear Glue front third wing rib bottom wing blank Eyeball good po sition As soon joints have set up about 20 minutes-begin bulkhead instal lation D working brush little glue back two-thirds wing rib pull down gently pin form wing camber Go easy pins Install bulkheads C B order Next add 1/16 sq top bottom fuselage spreaders Try fit finger-tight bowing stall double glueing Bend up land ing gear fits snugly front C bulkhead line up several di rections fix place good cov ering five-minute epoxy photo graph shows very clearly As soon epoxy set lay gussets illus trated Cut number pieces 1/32 sheet fuselage top bottom covering grain should go across fuselage Double glue install hold place drafting tape Please use drafting tape otherwise things will come apart removal Block-sand fuselage four sides polyhedral wing joints accom plished time-honored hand-launched glider method Cut wing four main panels after ribs dry bevel/sand proper angle No 220-grit sandpaper seems work best Test fit Pin down inner panels glue tip dihedral first center last Again go easy pins Things should looking like Half Korda now Put plywood nose plate Trial-fit nose plug finishsand Drill ream small holes tub ing noseplug wheels tubes can held place very small amount five-minute epoxy virtually bullet-proof light model such thisturn page January 1976 37 Left Author begins fuselage assembly joining tail post loca ting bulkhead D followed C B order Above Fuselage complete except top bottom balsa sheeting Above Top bottom sheeting pieces held drafting tape until glue dries used Titebond thinned lightly watersee text Right half-size model gear installation simple U 03 0 4 Li 030 -JD 4 C Wa 03J DW H wLiLi o1 H OC n -403 o 4J 2 -4 H -4Li 4I 2 LiCD z 4 COLi 0 H Li-4 I 0 0 H 0 Li - CD 4 -4 4 H Li 03 Z 0-4 H 4 03 4 Z 0 Li CC -4H 04z 40. 03 U Co __ 4 CCN H0 z CD03 Lid 053 z 4W 03 H03 Co-4 C -4 03 0 4 5Li 40 4Li F12 Li403 JIJ10aF 4 50H aLJZI C0 0 03 U H 4 H half k@ ida replica sport rubber airplane012456 1iimSsaii t/wamtaaa point good idea cut out numbers letters plus window trim tissue attach thin clear dope everything looks right give parts except bottom wing coat thin pasticized clear dope Sig Lite-Coat works very well dry sand whole works well-worn piece 400- 500-grit paper Attach stabilizer fin sub-fin using best eyeball methods Note 1/16 1/8 stifleners fin bits Put wing tail hold-down dowels rear motor peg Cut hole access rubber motor See pictures Sand off rough edges Get front end together bending up prop shaft add prop washers plastic propellers avail38 Model Aviation 0HLi 0 H H NN0 303 H 3/DH HH LiZ Li5 I- 03 N H C C able freewheeling simple 900 bend required finish job Outings Make up four-strand motor 3/16 rubber should little longer motor peg nose distance Refer Sport Modeler Sept 1974 Clarence Mathers excellent advice operation Fish motor place secure Use winding hook front model can safely wound prop off See photograph Check bal ance point indoors certain plus minus no eighth January 1976 39 front third 3/32 ribs cemented sheet-balsa wing blank couple pins rib may make easier rear two-thirds ribs glue coated pulled down gently held place couple pins Camber automatic Above By placing panel butt ends edge work board dihedral angle sanded block sander Right polyhedraled wing tips joined center panels sure have left right wings Below Center section wing doubled center ribs triangular gussets glued both edges Close-up detail nose plug tube bearing teflon washers An 8-1/4 plastic prop used four strands 3/16 rubber Prop free-wheelingit rotates rubber wound down Half -Korda inch plan location Add clay fore aft set right Now fun part Try few gentle hand glides about knee high slightly nose-down airplane no soarer should proceed stable fashion about eight ten feet pronounced dorks Take little time balance check gliding procedures Incidentally believe first flights should ROG crank about 200 turns winder get fix wind let rip either directly very slightly right side off-wind HaIf-Korda along its big brothers flies almost crash-proof forced little bit right under power prototype did naturally worried about ahead time put little right- down-thrust either drill nose plug adding paper match stick top left side nose plug before launch Glue place flight trim normal Glide may right left straight ahead better let model seek its own way first motor used will take about 500550 turns things generally still fun less tense about 400 350 turns ROG climb still steep flights very satisfying Small models like always losing front ends seems after rubber continued page 73 Right Plywood wheel has piece metal tube bearinguse five-minute epoxy hold drop end axle retain wheel 40 Model Aviation Above If exercise patience dont rush model could like Right Although author test flies 200 turns uses 300 normally stretch winding permits 500 550 turns Ready go flying full-size machine built-up construction won 1938 Wakefield flight 45 mm plus cially aft Slide bat tery servos etc fore-afi obtain balance point Remember check CG accessories installed pushrods fuel tank prop etc Control Surface Movements Initially set up surface movements follow ing Elevator Aileron -3/16 up down Rudder % right left Radio Installation Use servo trays possible 4 BITS will accept three KPS-12 type servos mounted side-by-side tray Use aileron servo side mount bracket Wrap battery foam install receiver-servo area use NyRod acceptable rudder pushrod should used elevator sure aileron control horns free after installation wing Some filing wing hold-down blocks may necessary Use flex cable engine throttle hook-up Flying 4 BITS will very re sponsive Set control surface movements suit individual preference never set response allow snap-roll aircraft raced find point increase elevator throw until snap-roll obtained back-off hole control horn general sport flying set control surface movements limited flying ability Always however start out soft controls Youll find 4 BITS fun aircraft youve ever flown racing watch out guys -Korda/Oldenkamp continued page 40 winds down free-wheeling begins particularly shaft gets bent little landing knock vibration sets An easy way cure since nose plug gets lot wear simply cant made lit forever coat fiveminute epoxy slip place pull out let dry doesnt work put piece masking tape top outer joint just after winding point being noseplug should free fall out airplane hits something gets upset upon landing References Balsa plywood spruce music wire rubber strip dowels tubing tissue Lite-Coat dope rubber lubricant etc available directly Sig Manu facturing Co Montezuma Iowa local hobby shops Sandpaper Titebond glue Five-Mm ute Epoxy glue--from variety hardware stores Plastic Propellers Peck-Polymers has some excellent units up 9/2 diameter Peck-Polymers P0 Box 2498 La Mesa Ca 92041 Rubber Winding Hook Jim Crockett Replicas l442 N Fruit Ave Fresno Ca 93728 PermaGloss Coverite may newest revolution covering material Heres unsolicited testimonial editor RC Modeler Mr Don Dewey quote part August 1975 issue .. iron-on plastic fabrics several minor dis advantages Among high gloss plastic look could hidden several coats exhaust residue addition materials have tendency sag during periods extreme humidity changes. d like have next model covered fabric far stronger silk covers up minor surface imperfections actually contains four coats paint realistic painted fabric appearance no plastic sheen will never shatter sag scratch best all have iron sanded framework l find aircraft covered Coverite PermaGloss will have lightest yet strongest coverings can possibly apply addition will have painted fabric appearance would find difficult equal silk dope aircraft particularly strength-to-weight ratio w standpoint realistic appearance strength durability ease repair mention ease application aGloss may newest revolution covering materials C0Vi-i i Chestnut St Phila Pa 19106 U QUE PLANS FOR GAS MODELERS PRICE INCLUDE PATTERNO 42 Eoig P26A $14 . 45 BOio 940-3 P12 $9 0ip OR] $7 47 C Bk P4-E $15 pod XIII $10 47 Oohook F11C-2 $15 l 17 $9 47 CoIC BeIIdie $11 Pp $8 48 GM GlodMbe $10 OHBoo 0 $9 49 SI Koode P017 $10 FBI 2B6C $11 $0 Polith Fl PO $10 rpe 46 Plo] DIII 50, $9 82 Slooo TW SB7 $10 Sop 07F1$11 $7 Co 010 FoIoo $15 54 MoMB-i$14 57 CoSO2C1 Soo $14 57 Boote 0,i0oiI$95B Boejo0B9Boobe$9 6AEGGVBoobeS1260Doog 0-SB00$$12 ___66 Coo 2GSI1ockef5F1 $14 $20 07 Liod Look Siio $12 $94610MOBE 4B Mc 109K Fl025 $20 2$ $25 50Doog 0i OCS$25 * 50Fo 5170 $2 5149SB I0 $1oole, 4089 $10so .512 $6C Wooho,k P40 $15RE BORE TO ADD20 -~ 47B Mo Molligo $12POE HANDLING BINS MODELOOMS QUICKEST MAIL SERVICE January 1976 73 Sflu 4 vOiCe PeiCtS SI 1401dfl AgO jflhjdLJLKjlilft ito UJA.n Ra.isteiisciaesi RI/Salt b0diiO. fS.mat 545 etitog *i MYIfl Shiv SRSet OfOpOSte-gO paid iSqflhRy Dtie