George hi In5— IT IS LATE FEBRUARY write fifth edition Vintage Stunt Championships will history time print have rather frantic efforts restore now-30-year-old AG-i Duster ever-growing happening working model number problems butyrate dope occurred couple years ago recalled some extent solved Duster designed built during winter-spring 1963-64 first model tried nontautening zero-shrink type butyrate fillets liberally coated number no-shrink applications show no signs blistering day None frustration has experienced color talc dope filler cracking splitting Just about mix fresh jar talc dope filler somewhere dark dim reaches mind came memory cornstarch Years ago recalled mixed cornstarchinstead talcum powderwith clear dope make filler After pouring about three ounces straight dope quart jar filled jar pure cornstarch added much butyrate thinner possible screwed lid shook jar really hard As soon cornstarch thoroughly mixed dope thinner room great deal powdery starch thinner process repeated several times air trapped cornstarch dispersed thinner now thin filler just floated off sanded Its unusual find such old model quite dry brittle has lot hangar rashie nicks dents cracks Most dope producers make product called rejuvenator Randolph people call Butysolve thin sprayed coat soaks through softening restoringor rejuvenatingthe finish dents nicks poured couple ounces thin filler small jar again filled cornstarch thinner until much thicker mix did great job smoothing out model near-original condition minimum sanding neat thing no curdling cracking other problems experienced earlier recurred reiterate value zero-shrink butyrate clear dope Because butyrate base does adhere nearly well nitrate zero-shrink allowed normal trouble-free finish over sharp corners blistering pulling away commonly attributed finish base Please somebody make us again normally try keep noncommercial communication few items bear mentioning no other reason give immediate connection valuable sources Much mail asks sources items no longer carried local hobby shops end column will list special interest groups carry advertisements smaller cottage industries publications interests lie control line free flight should belong support groups products overlap product intended may apply another Speak ModelAirplane course Dave Thornburg has written neatest book title want reai trip back through aeromodeling America dont fail order Pony X Press 5 Monticello Dr Albuquerque NM 87123 check local hobby shop $1995 postage paid like modeling interested latest construction techniques well model power designs 1992 NFFS Model Power Book edited Keith Hoover available Fred Terzian 4858 Moorpark Ave San Jose CA 95129 $2150 postage paid Ive always nut good tools useful have seen now available Tork-It 6048 Dee Court Stone Mountain GA 30087 As might guess company name Tork-It adjustable torque wrench intended primarily model engines particular interest hexdrive bits both inch metric sizes No toy fine piece equipment intended lifetime use few years ago 01 Dirty Dan Rutherford produced extremely interesting article Model Aviation about travels Russia Dan recently copied some correspondence covering past three four years Ive seldom read anything fascinating Regardless Dirty Dan veneer just let said Mr Rutherford exposes inner warmth understanding people belies rough exterior some photos 68 Model Aviation 2 Tarrytown San Antonio TX 78233 Left right John Johnson Jim Moore Cincinnati Ohio Golden Age Thompson Trophy Race models John Neal 14 Cincinnati Ohio built beautiful powerful Master 61s innovative engines neat Super Ringmaster Note Bart new Russia being marketed years VA 049 Note unique Simpson pilotwhat blast Dan Rutherford See text details split case Only 34 grams can see results Dans travels ordinary group products photo captions cover general ities little 34 grams VA 049 worthy additional comment Truly unique rod wrist pin twopiece piston assembly Note bar stock connecting rod connected via wrist pin threaded collar mates internal threads piston ingenious design very rugged allows shimming between collet piston two adjustments cylinder port timing Dan has select dealer list can contacted 4705 237th Place SE Bothell WA 98021 Tel 206 487-1735 further details subject 1/2A engines Ill share some results afternoon spent running some Holland Hornets comparison VA 049 some recent offerings market tests far complete will expounded greater detail finished now important comment Twinn-K people once again producing 5R high-nitro racing button head design discontinued back early 1980s much consternation learned use Several us have tried use 5P 5RX button head plugs old Holland Hornet poor results chamber shape units gives compression ratio too high engines tolerate number shims test SR button Hornet standard glow heads bored through 5A6 drill bit done took off last fin original glow head filing milling 1/2-inch flat side last fin collar formed could used lock SR button Hornet cylinder result clear 900-rpm gain over high-performance trumpet-shaped Holland Hornet head has out production long Further VA 049 tests will include fuel 25% nitro limit scarce Hornets Three M factory modified Hornets tested Gb-Bee plug 2000 below VA 049 Im sure Wiley 36 photo little interest What Wiley 36 Wiley William Willie Wiley has behind scenes some top highperformance engines number years machinist trade Willie decided last September would design engine using crankcase layout would allow him build top combatlfree flight 36 also 40-45 engines everything pylon rear valve side- rear-exhaust CL Stunt/RC Pattern engine plan work closely him rearexhaust piped stunt 45 along Frank McMillan have flying time read experiences will follow plastic covering materials use now rare discover someone has tried foam brushes doping models always frustrating have brush bristle come out just finish applying coat foam brush eliminates problem streakless finishnot unlike sprayed becomes reality have come prefer cheap oneinch-wide brush has wooden handle Continued page 74 July1993 69 Back again Simple modifications old Holland Hornet glow heads allow use SR Gb-Bee 1/2A button head plug prototype Wiley 36 combat engine rear-exhaust piped stunt 45 version experimental stage later Tork-It adjustable wrench hexdrive bits English metric sizes ensures uniform torque values screws gory bits two Orwick 64s operating table awaiting major surgery Note broken ears backplates same two Orwick engines restored perfect running orderready next Vintage Stunt Championships Bruce Abell sent photo showing Vanguard Pup engine built power California Champ old-timer two Dan Rutherfords extraordinary finds recent trip Russia OnF V1Model Flight modelers source left neat CO2 engine right rugged almost-ready-to-fly free flightbook lists hundreds hard-to-find Carefulthis little job will thermal easilymodeling items sources PRECISION MODEL PRODUCTS /ZZIj*d " Made U S BARSTOCK ALUMINUM SPINNERS Retail Part NoSizePrice TT-1502-B 1-1/2 $1495 TT-1752-B 1-3/4 1595 TT-2002-B 2 1895 TT-2252-B 2-1/4 1995 TT-2262-B 2-114 FAll . 2195 TT-2502-B 2-1122195 TT-2512-B FAt2395 TT-2752-B 2-3/42695 TT-2762-B 4 FAIl2895 TT-3002-B 33095 TT-301 2-B 3 FAI3295 TT-3252-B 3-1/44195 TT-3502-B 3-1/25495 TT-3752-B 3-3/46495 TT-4002-B 47995 3 Pieces Cone Back Plate Retainer Screw Note 3 4 Blade Spinners Available Alt Sizes Add $300 Per Spinner Part NoSize TT-0140-A 1/4-28 TT-0147-A 1/4-28/7mm TT-0610-A6x 10mm TT-0710-A7x 10mm TT-0516-A5/16-24 TT-0518-A5/16-24/8mm TT-0810-AOx 10mm TT-0825-A8x 125mm TT-0375-A3/8-24 TT-0125-AlOx 125mm 3 Pieces Nut Washer Machined Bushing Add $350 Shipping Handling Prices subject change notice ROMCO MFG INC OX 836 SOUTH HOUSTON TEXAS 77587 713 943-1867 hand electric starter always assume will start flip rule ingrained full-scale pilot should also modelers well Whenever hand-prop Ercoupe assume ignition hoteven know key off Its unexpected firing causes injury Note said ft ring engine does actually have start run cause injury Dont over-oilAH have neutralize last dregs combustion coat moving parts oil protect especially bearings cylinder bore Dont add oil whatever type choose use flip prop intake ports down side worse engine upside down aids getting oil up head can fire off doesnt fire may get much oil up end up hydraulic lock engine cant turn over prop will come screeching halt happens two things will occur First hand flipping youll probably slice finger slides off trailing edge prop Second using electric starter something liable break likely conrod crankpin best procedure oiling engine fill venturi carburetor RC oil slowly turn engine over until oil spread throughout bottom end youre running muffler isnt Up AroundlAldrich Continued page 69 Masking tape wrapped around foam-tohandle juncture gives stable unit lasts quite cleaned properly means blotting dope out foam paper towel before has time dry ready apply another coat just soak foam thin dope mixture until soft again method really shines application first coats Often dope tends run through pores tissue silk covering leaving unsightly blob hanging inside surface Quickly squeeze excess dope foam holding surface upside down blot blob right back out through material Remember thinner dope smoother finish cant manage long trip Tucson Arizona April second annual Eastern States Vintage CL Champs will held September 18 19 Tifton Georgia Old-Time Stunt will fly Saturday Classic Stunt Sunday Contact Tom Dixon 3390 Woodrun Trail Marietta GA 30062 details some publications carry advertisements hard-to-find items much can except repeat process couple times have open exhaust control line free flight close exhaust port piston wet pistons surface oil give few slow flips piston down port open try get drop twono moreagainst bypass ports liner opposite exhaust flip over again few times slowly After parts should properly coated no injuries should have occurred important thing flip slowly control line racing guy slowest flip has slowest restarts Therefore flip slowly dont get hurt thing can add what James has provided preference after-mn oil An after-run oil feel protects engines very well hasnt eaten up silicon pump parts engines over last few years Mercon Dexron II Auto matic Transmission Fluid Well worth 98-cents-per-quart investment parting month let leave two notable quotables 1 Any system depends reliability unreliable 2 Death has proven 99% fatal laboratory rats Dont take chances Fourth July have fun field Keep mail club newsletters coming Until next month ision Aerobatic Model Pilots Association PAM PA Stunt News 1019 Creek Trail Anniston AL 36206 $151 year US $20 CanadalMexico $25/year other countries National Free Flight Society NFFS 19 Frederick Dr Newport News VA 23601 $15/year age 19 up $750/year age 18 under Model Aircraft Combat Association MACA MACA News PO Box 111 Jasonville IN 47438 $15/year US Canada Mexico $1 8/year $25/year other countries Society Antique Modelers SAM SAM Speaks 85 Bellevue Ave Belvedere CA 94920 $15/year US $25/year other countries airmail F Y 1Model Flight sourcebook everything flying models Dynamic Models 4922 Rochelle Irvine CA 92714-2941 $1995 plus $140 postpaid odel Aviation ox Weight 058 02 095 02 100 02 160 oz 150 02 190 02 170 oz 220 02 200 02 260 oz 250 oz 340 oz 470 oz 520 oz 570 02 PROP NUT ADAPTORS V RetailApprox PriceWeight $595.061 02 595 061 02 59506302 595082oz 595 02 59507602 595076oz 59507502 695 117 02 695115 02 Frequency Update See page 52
Edition: Model Aviation - 1993/07
Page Numbers: 68, 69, 74
George hi In5— IT IS LATE FEBRUARY write fifth edition Vintage Stunt Championships will history time print have rather frantic efforts restore now-30-year-old AG-i Duster ever-growing happening working model number problems butyrate dope occurred couple years ago recalled some extent solved Duster designed built during winter-spring 1963-64 first model tried nontautening zero-shrink type butyrate fillets liberally coated number no-shrink applications show no signs blistering day None frustration has experienced color talc dope filler cracking splitting Just about mix fresh jar talc dope filler somewhere dark dim reaches mind came memory cornstarch Years ago recalled mixed cornstarchinstead talcum powderwith clear dope make filler After pouring about three ounces straight dope quart jar filled jar pure cornstarch added much butyrate thinner possible screwed lid shook jar really hard As soon cornstarch thoroughly mixed dope thinner room great deal powdery starch thinner process repeated several times air trapped cornstarch dispersed thinner now thin filler just floated off sanded Its unusual find such old model quite dry brittle has lot hangar rashie nicks dents cracks Most dope producers make product called rejuvenator Randolph people call Butysolve thin sprayed coat soaks through softening restoringor rejuvenatingthe finish dents nicks poured couple ounces thin filler small jar again filled cornstarch thinner until much thicker mix did great job smoothing out model near-original condition minimum sanding neat thing no curdling cracking other problems experienced earlier recurred reiterate value zero-shrink butyrate clear dope Because butyrate base does adhere nearly well nitrate zero-shrink allowed normal trouble-free finish over sharp corners blistering pulling away commonly attributed finish base Please somebody make us again normally try keep noncommercial communication few items bear mentioning no other reason give immediate connection valuable sources Much mail asks sources items no longer carried local hobby shops end column will list special interest groups carry advertisements smaller cottage industries publications interests lie control line free flight should belong support groups products overlap product intended may apply another Speak ModelAirplane course Dave Thornburg has written neatest book title want reai trip back through aeromodeling America dont fail order Pony X Press 5 Monticello Dr Albuquerque NM 87123 check local hobby shop $1995 postage paid like modeling interested latest construction techniques well model power designs 1992 NFFS Model Power Book edited Keith Hoover available Fred Terzian 4858 Moorpark Ave San Jose CA 95129 $2150 postage paid Ive always nut good tools useful have seen now available Tork-It 6048 Dee Court Stone Mountain GA 30087 As might guess company name Tork-It adjustable torque wrench intended primarily model engines particular interest hexdrive bits both inch metric sizes No toy fine piece equipment intended lifetime use few years ago 01 Dirty Dan Rutherford produced extremely interesting article Model Aviation about travels Russia Dan recently copied some correspondence covering past three four years Ive seldom read anything fascinating Regardless Dirty Dan veneer just let said Mr Rutherford exposes inner warmth understanding people belies rough exterior some photos 68 Model Aviation 2 Tarrytown San Antonio TX 78233 Left right John Johnson Jim Moore Cincinnati Ohio Golden Age Thompson Trophy Race models John Neal 14 Cincinnati Ohio built beautiful powerful Master 61s innovative engines neat Super Ringmaster Note Bart new Russia being marketed years VA 049 Note unique Simpson pilotwhat blast Dan Rutherford See text details split case Only 34 grams can see results Dans travels ordinary group products photo captions cover general ities little 34 grams VA 049 worthy additional comment Truly unique rod wrist pin twopiece piston assembly Note bar stock connecting rod connected via wrist pin threaded collar mates internal threads piston ingenious design very rugged allows shimming between collet piston two adjustments cylinder port timing Dan has select dealer list can contacted 4705 237th Place SE Bothell WA 98021 Tel 206 487-1735 further details subject 1/2A engines Ill share some results afternoon spent running some Holland Hornets comparison VA 049 some recent offerings market tests far complete will expounded greater detail finished now important comment Twinn-K people once again producing 5R high-nitro racing button head design discontinued back early 1980s much consternation learned use Several us have tried use 5P 5RX button head plugs old Holland Hornet poor results chamber shape units gives compression ratio too high engines tolerate number shims test SR button Hornet standard glow heads bored through 5A6 drill bit done took off last fin original glow head filing milling 1/2-inch flat side last fin collar formed could used lock SR button Hornet cylinder result clear 900-rpm gain over high-performance trumpet-shaped Holland Hornet head has out production long Further VA 049 tests will include fuel 25% nitro limit scarce Hornets Three M factory modified Hornets tested Gb-Bee plug 2000 below VA 049 Im sure Wiley 36 photo little interest What Wiley 36 Wiley William Willie Wiley has behind scenes some top highperformance engines number years machinist trade Willie decided last September would design engine using crankcase layout would allow him build top combatlfree flight 36 also 40-45 engines everything pylon rear valve side- rear-exhaust CL Stunt/RC Pattern engine plan work closely him rearexhaust piped stunt 45 along Frank McMillan have flying time read experiences will follow plastic covering materials use now rare discover someone has tried foam brushes doping models always frustrating have brush bristle come out just finish applying coat foam brush eliminates problem streakless finishnot unlike sprayed becomes reality have come prefer cheap oneinch-wide brush has wooden handle Continued page 74 July1993 69 Back again Simple modifications old Holland Hornet glow heads allow use SR Gb-Bee 1/2A button head plug prototype Wiley 36 combat engine rear-exhaust piped stunt 45 version experimental stage later Tork-It adjustable wrench hexdrive bits English metric sizes ensures uniform torque values screws gory bits two Orwick 64s operating table awaiting major surgery Note broken ears backplates same two Orwick engines restored perfect running orderready next Vintage Stunt Championships Bruce Abell sent photo showing Vanguard Pup engine built power California Champ old-timer two Dan Rutherfords extraordinary finds recent trip Russia OnF V1Model Flight modelers source left neat CO2 engine right rugged almost-ready-to-fly free flightbook lists hundreds hard-to-find Carefulthis little job will thermal easilymodeling items sources PRECISION MODEL PRODUCTS /ZZIj*d " Made U S BARSTOCK ALUMINUM SPINNERS Retail Part NoSizePrice TT-1502-B 1-1/2 $1495 TT-1752-B 1-3/4 1595 TT-2002-B 2 1895 TT-2252-B 2-1/4 1995 TT-2262-B 2-114 FAll . 2195 TT-2502-B 2-1122195 TT-2512-B FAt2395 TT-2752-B 2-3/42695 TT-2762-B 4 FAIl2895 TT-3002-B 33095 TT-301 2-B 3 FAI3295 TT-3252-B 3-1/44195 TT-3502-B 3-1/25495 TT-3752-B 3-3/46495 TT-4002-B 47995 3 Pieces Cone Back Plate Retainer Screw Note 3 4 Blade Spinners Available Alt Sizes Add $300 Per Spinner Part NoSize TT-0140-A 1/4-28 TT-0147-A 1/4-28/7mm TT-0610-A6x 10mm TT-0710-A7x 10mm TT-0516-A5/16-24 TT-0518-A5/16-24/8mm TT-0810-AOx 10mm TT-0825-A8x 125mm TT-0375-A3/8-24 TT-0125-AlOx 125mm 3 Pieces Nut Washer Machined Bushing Add $350 Shipping Handling Prices subject change notice ROMCO MFG INC OX 836 SOUTH HOUSTON TEXAS 77587 713 943-1867 hand electric starter always assume will start flip rule ingrained full-scale pilot should also modelers well Whenever hand-prop Ercoupe assume ignition hoteven know key off Its unexpected firing causes injury Note said ft ring engine does actually have start run cause injury Dont over-oilAH have neutralize last dregs combustion coat moving parts oil protect especially bearings cylinder bore Dont add oil whatever type choose use flip prop intake ports down side worse engine upside down aids getting oil up head can fire off doesnt fire may get much oil up end up hydraulic lock engine cant turn over prop will come screeching halt happens two things will occur First hand flipping youll probably slice finger slides off trailing edge prop Second using electric starter something liable break likely conrod crankpin best procedure oiling engine fill venturi carburetor RC oil slowly turn engine over until oil spread throughout bottom end youre running muffler isnt Up AroundlAldrich Continued page 69 Masking tape wrapped around foam-tohandle juncture gives stable unit lasts quite cleaned properly means blotting dope out foam paper towel before has time dry ready apply another coat just soak foam thin dope mixture until soft again method really shines application first coats Often dope tends run through pores tissue silk covering leaving unsightly blob hanging inside surface Quickly squeeze excess dope foam holding surface upside down blot blob right back out through material Remember thinner dope smoother finish cant manage long trip Tucson Arizona April second annual Eastern States Vintage CL Champs will held September 18 19 Tifton Georgia Old-Time Stunt will fly Saturday Classic Stunt Sunday Contact Tom Dixon 3390 Woodrun Trail Marietta GA 30062 details some publications carry advertisements hard-to-find items much can except repeat process couple times have open exhaust control line free flight close exhaust port piston wet pistons surface oil give few slow flips piston down port open try get drop twono moreagainst bypass ports liner opposite exhaust flip over again few times slowly After parts should properly coated no injuries should have occurred important thing flip slowly control line racing guy slowest flip has slowest restarts Therefore flip slowly dont get hurt thing can add what James has provided preference after-mn oil An after-run oil feel protects engines very well hasnt eaten up silicon pump parts engines over last few years Mercon Dexron II Auto matic Transmission Fluid Well worth 98-cents-per-quart investment parting month let leave two notable quotables 1 Any system depends reliability unreliable 2 Death has proven 99% fatal laboratory rats Dont take chances Fourth July have fun field Keep mail club newsletters coming Until next month ision Aerobatic Model Pilots Association PAM PA Stunt News 1019 Creek Trail Anniston AL 36206 $151 year US $20 CanadalMexico $25/year other countries National Free Flight Society NFFS 19 Frederick Dr Newport News VA 23601 $15/year age 19 up $750/year age 18 under Model Aircraft Combat Association MACA MACA News PO Box 111 Jasonville IN 47438 $15/year US Canada Mexico $1 8/year $25/year other countries Society Antique Modelers SAM SAM Speaks 85 Bellevue Ave Belvedere CA 94920 $15/year US $25/year other countries airmail F Y 1Model Flight sourcebook everything flying models Dynamic Models 4922 Rochelle Irvine CA 92714-2941 $1995 plus $140 postpaid odel Aviation ox Weight 058 02 095 02 100 02 160 oz 150 02 190 02 170 oz 220 02 200 02 260 oz 250 oz 340 oz 470 oz 520 oz 570 02 PROP NUT ADAPTORS V RetailApprox PriceWeight $595.061 02 595 061 02 59506302 595082oz 595 02 59507602 595076oz 59507502 695 117 02 695115 02 Frequency Update See page 52
Edition: Model Aviation - 1993/07
Page Numbers: 68, 69, 74
George hi In5— IT IS LATE FEBRUARY write fifth edition Vintage Stunt Championships will history time print have rather frantic efforts restore now-30-year-old AG-i Duster ever-growing happening working model number problems butyrate dope occurred couple years ago recalled some extent solved Duster designed built during winter-spring 1963-64 first model tried nontautening zero-shrink type butyrate fillets liberally coated number no-shrink applications show no signs blistering day None frustration has experienced color talc dope filler cracking splitting Just about mix fresh jar talc dope filler somewhere dark dim reaches mind came memory cornstarch Years ago recalled mixed cornstarchinstead talcum powderwith clear dope make filler After pouring about three ounces straight dope quart jar filled jar pure cornstarch added much butyrate thinner possible screwed lid shook jar really hard As soon cornstarch thoroughly mixed dope thinner room great deal powdery starch thinner process repeated several times air trapped cornstarch dispersed thinner now thin filler just floated off sanded Its unusual find such old model quite dry brittle has lot hangar rashie nicks dents cracks Most dope producers make product called rejuvenator Randolph people call Butysolve thin sprayed coat soaks through softening restoringor rejuvenatingthe finish dents nicks poured couple ounces thin filler small jar again filled cornstarch thinner until much thicker mix did great job smoothing out model near-original condition minimum sanding neat thing no curdling cracking other problems experienced earlier recurred reiterate value zero-shrink butyrate clear dope Because butyrate base does adhere nearly well nitrate zero-shrink allowed normal trouble-free finish over sharp corners blistering pulling away commonly attributed finish base Please somebody make us again normally try keep noncommercial communication few items bear mentioning no other reason give immediate connection valuable sources Much mail asks sources items no longer carried local hobby shops end column will list special interest groups carry advertisements smaller cottage industries publications interests lie control line free flight should belong support groups products overlap product intended may apply another Speak ModelAirplane course Dave Thornburg has written neatest book title want reai trip back through aeromodeling America dont fail order Pony X Press 5 Monticello Dr Albuquerque NM 87123 check local hobby shop $1995 postage paid like modeling interested latest construction techniques well model power designs 1992 NFFS Model Power Book edited Keith Hoover available Fred Terzian 4858 Moorpark Ave San Jose CA 95129 $2150 postage paid Ive always nut good tools useful have seen now available Tork-It 6048 Dee Court Stone Mountain GA 30087 As might guess company name Tork-It adjustable torque wrench intended primarily model engines particular interest hexdrive bits both inch metric sizes No toy fine piece equipment intended lifetime use few years ago 01 Dirty Dan Rutherford produced extremely interesting article Model Aviation about travels Russia Dan recently copied some correspondence covering past three four years Ive seldom read anything fascinating Regardless Dirty Dan veneer just let said Mr Rutherford exposes inner warmth understanding people belies rough exterior some photos 68 Model Aviation 2 Tarrytown San Antonio TX 78233 Left right John Johnson Jim Moore Cincinnati Ohio Golden Age Thompson Trophy Race models John Neal 14 Cincinnati Ohio built beautiful powerful Master 61s innovative engines neat Super Ringmaster Note Bart new Russia being marketed years VA 049 Note unique Simpson pilotwhat blast Dan Rutherford See text details split case Only 34 grams can see results Dans travels ordinary group products photo captions cover general ities little 34 grams VA 049 worthy additional comment Truly unique rod wrist pin twopiece piston assembly Note bar stock connecting rod connected via wrist pin threaded collar mates internal threads piston ingenious design very rugged allows shimming between collet piston two adjustments cylinder port timing Dan has select dealer list can contacted 4705 237th Place SE Bothell WA 98021 Tel 206 487-1735 further details subject 1/2A engines Ill share some results afternoon spent running some Holland Hornets comparison VA 049 some recent offerings market tests far complete will expounded greater detail finished now important comment Twinn-K people once again producing 5R high-nitro racing button head design discontinued back early 1980s much consternation learned use Several us have tried use 5P 5RX button head plugs old Holland Hornet poor results chamber shape units gives compression ratio too high engines tolerate number shims test SR button Hornet standard glow heads bored through 5A6 drill bit done took off last fin original glow head filing milling 1/2-inch flat side last fin collar formed could used lock SR button Hornet cylinder result clear 900-rpm gain over high-performance trumpet-shaped Holland Hornet head has out production long Further VA 049 tests will include fuel 25% nitro limit scarce Hornets Three M factory modified Hornets tested Gb-Bee plug 2000 below VA 049 Im sure Wiley 36 photo little interest What Wiley 36 Wiley William Willie Wiley has behind scenes some top highperformance engines number years machinist trade Willie decided last September would design engine using crankcase layout would allow him build top combatlfree flight 36 also 40-45 engines everything pylon rear valve side- rear-exhaust CL Stunt/RC Pattern engine plan work closely him rearexhaust piped stunt 45 along Frank McMillan have flying time read experiences will follow plastic covering materials use now rare discover someone has tried foam brushes doping models always frustrating have brush bristle come out just finish applying coat foam brush eliminates problem streakless finishnot unlike sprayed becomes reality have come prefer cheap oneinch-wide brush has wooden handle Continued page 74 July1993 69 Back again Simple modifications old Holland Hornet glow heads allow use SR Gb-Bee 1/2A button head plug prototype Wiley 36 combat engine rear-exhaust piped stunt 45 version experimental stage later Tork-It adjustable wrench hexdrive bits English metric sizes ensures uniform torque values screws gory bits two Orwick 64s operating table awaiting major surgery Note broken ears backplates same two Orwick engines restored perfect running orderready next Vintage Stunt Championships Bruce Abell sent photo showing Vanguard Pup engine built power California Champ old-timer two Dan Rutherfords extraordinary finds recent trip Russia OnF V1Model Flight modelers source left neat CO2 engine right rugged almost-ready-to-fly free flightbook lists hundreds hard-to-find Carefulthis little job will thermal easilymodeling items sources PRECISION MODEL PRODUCTS /ZZIj*d " Made U S BARSTOCK ALUMINUM SPINNERS Retail Part NoSizePrice TT-1502-B 1-1/2 $1495 TT-1752-B 1-3/4 1595 TT-2002-B 2 1895 TT-2252-B 2-1/4 1995 TT-2262-B 2-114 FAll . 2195 TT-2502-B 2-1122195 TT-2512-B FAt2395 TT-2752-B 2-3/42695 TT-2762-B 4 FAIl2895 TT-3002-B 33095 TT-301 2-B 3 FAI3295 TT-3252-B 3-1/44195 TT-3502-B 3-1/25495 TT-3752-B 3-3/46495 TT-4002-B 47995 3 Pieces Cone Back Plate Retainer Screw Note 3 4 Blade Spinners Available Alt Sizes Add $300 Per Spinner Part NoSize TT-0140-A 1/4-28 TT-0147-A 1/4-28/7mm TT-0610-A6x 10mm TT-0710-A7x 10mm TT-0516-A5/16-24 TT-0518-A5/16-24/8mm TT-0810-AOx 10mm TT-0825-A8x 125mm TT-0375-A3/8-24 TT-0125-AlOx 125mm 3 Pieces Nut Washer Machined Bushing Add $350 Shipping Handling Prices subject change notice ROMCO MFG INC OX 836 SOUTH HOUSTON TEXAS 77587 713 943-1867 hand electric starter always assume will start flip rule ingrained full-scale pilot should also modelers well Whenever hand-prop Ercoupe assume ignition hoteven know key off Its unexpected firing causes injury Note said ft ring engine does actually have start run cause injury Dont over-oilAH have neutralize last dregs combustion coat moving parts oil protect especially bearings cylinder bore Dont add oil whatever type choose use flip prop intake ports down side worse engine upside down aids getting oil up head can fire off doesnt fire may get much oil up end up hydraulic lock engine cant turn over prop will come screeching halt happens two things will occur First hand flipping youll probably slice finger slides off trailing edge prop Second using electric starter something liable break likely conrod crankpin best procedure oiling engine fill venturi carburetor RC oil slowly turn engine over until oil spread throughout bottom end youre running muffler isnt Up AroundlAldrich Continued page 69 Masking tape wrapped around foam-tohandle juncture gives stable unit lasts quite cleaned properly means blotting dope out foam paper towel before has time dry ready apply another coat just soak foam thin dope mixture until soft again method really shines application first coats Often dope tends run through pores tissue silk covering leaving unsightly blob hanging inside surface Quickly squeeze excess dope foam holding surface upside down blot blob right back out through material Remember thinner dope smoother finish cant manage long trip Tucson Arizona April second annual Eastern States Vintage CL Champs will held September 18 19 Tifton Georgia Old-Time Stunt will fly Saturday Classic Stunt Sunday Contact Tom Dixon 3390 Woodrun Trail Marietta GA 30062 details some publications carry advertisements hard-to-find items much can except repeat process couple times have open exhaust control line free flight close exhaust port piston wet pistons surface oil give few slow flips piston down port open try get drop twono moreagainst bypass ports liner opposite exhaust flip over again few times slowly After parts should properly coated no injuries should have occurred important thing flip slowly control line racing guy slowest flip has slowest restarts Therefore flip slowly dont get hurt thing can add what James has provided preference after-mn oil An after-run oil feel protects engines very well hasnt eaten up silicon pump parts engines over last few years Mercon Dexron II Auto matic Transmission Fluid Well worth 98-cents-per-quart investment parting month let leave two notable quotables 1 Any system depends reliability unreliable 2 Death has proven 99% fatal laboratory rats Dont take chances Fourth July have fun field Keep mail club newsletters coming Until next month ision Aerobatic Model Pilots Association PAM PA Stunt News 1019 Creek Trail Anniston AL 36206 $151 year US $20 CanadalMexico $25/year other countries National Free Flight Society NFFS 19 Frederick Dr Newport News VA 23601 $15/year age 19 up $750/year age 18 under Model Aircraft Combat Association MACA MACA News PO Box 111 Jasonville IN 47438 $15/year US Canada Mexico $1 8/year $25/year other countries Society Antique Modelers SAM SAM Speaks 85 Bellevue Ave Belvedere CA 94920 $15/year US $25/year other countries airmail F Y 1Model Flight sourcebook everything flying models Dynamic Models 4922 Rochelle Irvine CA 92714-2941 $1995 plus $140 postpaid odel Aviation ox Weight 058 02 095 02 100 02 160 oz 150 02 190 02 170 oz 220 02 200 02 260 oz 250 oz 340 oz 470 oz 520 oz 570 02 PROP NUT ADAPTORS V RetailApprox PriceWeight $595.061 02 595 061 02 59506302 595082oz 595 02 59507602 595076oz 59507502 695 117 02 695115 02 Frequency Update See page 52