U Joe Wagner ffZ7x~ 0 ODEL AIRPLANE ENGINES have use almost seven decades discussions about throughout time topic recurs fuel Despite technical advances made since 1930s still seems just much misunderstanding ever about model engine fuel Raymond Yatess 1942 book Model Gasoline Engines filled two pages warning readers against practice souping up model fuel adding benzol acetone other secret ingredients Since model magazine articles have repeatedly issued similar cautions Yet theres never end burning ambition among modelers discover some new amazingly potent fuel mixture engines About year ago model flier Michigan began promoting new miracle model fuel ingredient made reclaimed deepfryer oil mail last month came suggestion reader column turpentine might excellent additive model fuel still recall racing fuel recipe developed fellow model club members circa 1947 After considerable experimentation came up ultimate brew consisting 25% castor oil wood alcohol shellac thinner methanol Nobody could convince fellow last three ingredients identical goal course power belief some modelers hold somewhere somehow theres magic chemicalmaybe quite common such turpentine acetonethat will unleash incredible extra power model engines Another belief miracle ingredient something companies manufacture model fuel have too unimaginative have tried fact model fuel makers imaginative anyone practically everything way inflammable substance has least considered model fuel ingredient Some have July1999 63 Argentinian DH 45 true ABC engine twin ball bearings performs best fuel 5% nitromethane lubricant old-time spark-ignition gasoline-burners SAE 70 oil easily potent Irvine 40 designed no-nitro FAI fuel starts readily throttles nicely found airports gas stations delivers dependable performance weather used purpose before detrimental effects ng nitromethane shortage early 1 950s fully appreciatedwas widely used rocket fuel ditertiary butyl peroxide instance Liquid Dynamite racing fuel mid-1940sbriefly used glow fuel accelerant worked well However contained picric acid explosive used British artillery shellsthe stuff shock-sensitive manufacturer know World War According Duke Fox tested Liquidwho included DTBP glow fuel decided handling Dynamite couple early engines power gain didntrisks far too high make continuing worthwhile amount muchand didnt compensate serious corrosion picric acid caused inside enginesThe fundamental facts about model engine fuel simple Some first glow fuels contained nitrobenzene Years laterparadoxical medical research showed particular solvent potent uel ingredient contains appreciably potential carcinogencombustion energy ordinary 94-octane lead-free El IMAA Membership Application ~ IZ Renewal LI FamiIyIIZ Date_________ IName I AddressI II City/TownI State/ Province_________________ Zip Code__________I II Phone__________________________________________ Fax___________________________________ I Chapter #_ AMA#___ MAAC CanadaI Annual Dues $1500 USA Add $1000 First Class $1500US Canada& Mexico $30OOUS Foreign IMake Check Money Order payable International Miniature Aircraft Association IMAAI I Any person flys resides United States must show proof membership Academy Model Aeronautics AMA order obtain IMAA membership Include copy AMA License number application Mail to Remittance Type IMAA Secretary/Treasurer Check D Money Order D Cashiers Check D Don E Vineyard1 year D 2 years D 3 years D Amount$______ 205 S HilIdale Road Family memberships available no magazine included Salina KS 67401 for $750 US year details contact secretary High Flight magazine printed quarterly mailed 2nd Class Bulk US & Canada AMA 99For 1st Class Postage Add $10 00 US United States & Canada July1999 65 A-M 10 diesel custom carburetor needed least Fox Eagle Ill designed manufactured during nitromethane 35% castor oil its fuel prevent overheating shortage Runs reliably zero-nitro glow fuel automotive gasoline Yet theres no practicable way harnessing fraction potential energy content engine fueleven methanol low scorer far heat energy content per pound comparisons According Van Nostrands Scientific Encyclopedia during complete combustion gasoline produces net energy output approximately 20000 BTU per pound Kerosenes about same Methanols rated 9000 BTU/pound ethyl alcohol does much better 12000 BTU methanol most-common ingredient model engine fuel has less half energy content gasoline Part answer amount air required complete combustion put term quotation marks because its engineering impossibility achievable laboratory Petroleum-based fuels such gasoline kerosene need 15 16 grams air complete oxidization gram fuel Ethyl alcohol needs nine grams airbut methanol requires mere 61/2 grams gram air standard atmospheric conditions roughly 50 cubic inches Remember though figures just given complete combustion doesnt occur engines very far ideal conditions model power plants operate demonstrated paradoxical fact maximum power output alcohol-fueled model engines require much larger air intakes gasoline- kerosene-burners Its still imperfectly understood exactly what goes combustion chambers model engines However few basic points well-established does no good release energy combustion chamber faster piston movement can accept Doing can cause damage such blown head gaskets burst glow plug seals broken pistons Thats high-nitro fuel provides little benefit engines run modest rpm advantage nitromethane engine fuel its exceedingly rapid combustion rate Thats vital 20000 rpm maximum available combustion period less millisecond sport-type model flying RC engines spend running time part-throttle dependable performance calls relatively mild slow-burning fuel Another much-misunderstood aspect model engine fuel its oil content points mentioned previous column deserves further explanation function oil coolant Canadian reader Ian McQueen objected heat produced during combustion goes out exhaust power stroke complete can oil fuel possibly carry away excess heat its supposed role coolant Ian has good point However cooling effect oil model fuel takes place instant combustion exhaust port acts like water injection big engines inert kieselguhr content dynamite noninflammable material moderates heat energy release absorbing some instant generation prevents detonation its well-known bad effects greater oil content two-stroke model fuel lower combustionchamber temperature George Aldrich San Antonio TX internationally known highperformance competition engines found distinct advantages using 33% oil content gasoline-fueled spark ignition engines standard blend 31 gas SAB 70 oil has used since 1932 George discovered 21 mix noticeably reduced operating temperature hot-running old-time sparkers improved performance Reducing oil content model fuel does have benefits some competition events Control Line Team Racing various Texaco endurance categories events fuel economy provides competitive edge minimizing unburnable ingredients ORDER HOURS Superior Balsa & Hobby Supply GRAIN & DENS S ELECTION 700 AM 700 PM 20-G Centralia Hawaiian Gardens CA 90716 PST CA TIME se add sufficient amount excess refunded shipping UPS Parcel Post PLUS $285 handling please call Monday Saturday $2500 Mm order n accept Visa Mastercard Checks 0 CA sales add 825% sales tax MFGRS & DEALERS Info 5621865-3220 0 FAX 562860-0327 Complete price list-SASE Shop hours 800AM 300PM Mon FriCALL FOR RESELLER 800 488-9525 OGRAM Pnces sobiect change 02/99wwwsuperiorbalsacombalsa@ixnetcomcom BALSA Bass sticks 2x balsa price BALSA SHEETS TRAILING EDGES 36 LEADING EDGES Aircraft Grade Birch Plywood Silka Spruce sticks 3 c balsa price~ 103648ConventionalSymmetncal 3347112o48 4648 1/16 INCH36 481/4 INCH30 483/32o 13142114 013964F 6012112012 STICK1/16 01294531l 03/4293712o24 1/8 013546nile 011144971 I1/64 1 1/leo 1/16101/401/4223031160139593/8 01105685 1/1603/32101/403/827331/4 015278112 0290 1/4o3/850 3/803/8s3 Ply 145295535 10353600 1/1601/217218/16 INCH36481732-5-202-591/16 1/leo 1/810141/401/229413/60167662/4031603/901/2651/201/21051/32 1/leo 3/1611151/405/937501/201791041/2o 3/41453/4 03/41603 Ply 55675 2500 1/1601/412151/403/442 56 1/160 3/813162 INCH364836 AILERONS3/401170 101185 1/1603/422295/1605/1827351/160238501/4 0157Ldg Edge Re6ective Tape 3503 Fl7 951503S5675 2600 5/160 3/831393/320246611/4 011/465 2122AN014361..485/1601/239 491/8 0249651/4 011/274 3/160260741/4 02606 BALSA SHEETS 3/320 3/3211135/1603/4146 1621/4 0268905/19011/474140275 525 1020 3800 . .3/8 02861195/16011/275 613163/8 INCH36481/2 021101435/1602861/161413001/6 3/3201/81214AI 150 3/3201/414183/803/636453/8011/2833/321602255 Ply20557511204000 3/3203/615193/801/245573 INCH36483/802951/8179 3/3201/219243/805/847591/320349693/8021/21063/162062853/16 3/3203/426 323/803/453 681/190344601/2 011/2951/42353254 Ply99200347685 2600 1/8 INCH3648Iizeic..IAa73/320352671/2 02 156 3/8 300 4201/4 1/8 03 63 6 1/2 510 7155 Ply125230 380 735 2850 1/801/81113 1/2o 1/249 643/160376103 1/8 03/161318 1/205/807 761/4 0354130 36 TRIANGLES BALSABLOCKS /3/8 1/801/41421 1/203/460 82 5/1603 109 152 000/00/150285 550 1000 3500 1/8o3/8 15233/6 031151701/401/4 /oo0/ 27Fly 1/801/22127 lajyN8..41/2 031552553/803/0 /rr/ 353048 1/803/42836 h/8o5/860 861/201/2 /000 / f 45103 120 2352651/2 215 93 1144INCH36483/403/4 //Ofl//1,,,,j 54104 157 3253784259 7//y61512004500 3/16 INCH36481/320478186101 2 175 245252335L116 L 3/160 3/1614231/18046692203 180 350423465t95I125 240 475 1750 3/1601/41827 Other FineProdects3/320482114I 3/1603/82129 NHP WestSystems1/8 0493134204 205 450530715Poplar 3/1601/22436& Bob Smith Epoxy3/1804106186 36 BIRCH DOWEL303 330 55S750065II 345 3/1603/430451/4 04152179 1/6 16 5/16 27304 405 77052512351/4 Lite185 675 2500 0 Tools Supplies3/8 04210205 3/16 17 3/8 37404 050 5001250/005Poplar125 CornpositsHardware1/2 04285336 1/4 20 1/2 54 CASBob Smith FlashBundles$295- $395Shyg Only tJBECHI 1/32o 12 In/into 105 51160 Trock Thin1/2 210185Bargain3648FOAM SHEETS Blue 2012024 365 Gapor1 oz3493001/3203 9 1/3204 611/801/6 361 3/1603/16 30 1/401/4 191 3/803/8 1121/201/2 81 Thick2 oz5955001/1603 8 1/1604 61/803/16 32 3/1601/4 123 1/403/8 15 3/001/2 1101/203/4 6 White 2012024 1758/002024 040 1328 1/N Oh/ok 8 OZ179516503/3203 81 3/3204 51/001/4 130 3/16o 3/8 /20 1/401/2 141 3/80 3/4 1 860hie2o24o48 630" EPP 2012024 550 /0 7/100 rhrg/ror 16 oz30001/0 03 6 1/8 04 /411/803/6 281 3/1601/2 17 1/403/4 10WhiteOx 12024 300EFF2o 12o48 1050 2oz thin gaptilling 1 seccore 5503/160353/160431/601/220 3/160 3/4113Limited availability CallWhite4o24o46 1275" 6FF 2o36 048 3050 Ode1SsI Thin1/2oz455365 1/4 03 4 1/4 o4 3 1/603/4 15 Gap or1 oz845665 13/6 03 3 3/8 04 2a Some stains wormholcs & irregulars Inconel Foam Cutting Wire et $3 00 Thick2oz149512001/2 03 /2 1/2 04 1215600 Handlg Odor UPS Overs/ze Shipg Chge 66 Model Aviation Racing Texaco fuel common among experts fly events us sport fliers advantages long engine life dependable performance less-than-optimum conditions make good case high oil percentage model fuelespecially diesels Some readers questioned need modern model diesels oldfashioned diesel fuel formula /s ether kerosene castor oil amateur model fuel blenders 1/3 figure has seldom meant precisely 3333% represents working value somewhere between would know better much castor oil model diesel fuel should contain manufacturers engines Lets see what recommend AE calls 30% castor during break-in sport flying 25% contest use Aurora specifies *I/ mix Russian makers Marz MK-17 engines Chinese Silver Swallow folks Czech MP Jet instructions call 40% castor oil content break-in 35% sport flying British Progress Aero Works PAW people recommend 30% break-in 24% plain-bearing 20% ballbearing engines model diesel manufacturers calls other lubricant castor oil above listing deliberately avoided including old-time replica diesel engines manufacturers mentioned produce modern-design shortstroke high-performance diesels conclusion international consensus diesel makersfrom Britain India Russia China Czech Republicis theyd surely among first know benefit use low oil percentages model diesel fuelor exotic lubricants such jet turbine oil reclaimed deep-fry cooking fat Thats useand recommendthe triedand-true diesel fuel blend approximately 1/ castor ether kerosene 2% 3% cetane booster added total quantity Heres real handy hint handstarting model engines us prefer using electric starter Ive found can retain feel fingerflipping propellers protecting against injury wearing glove right hand found some tough yet quite flexible cowhide work gloves discount store few years ago now use right engine starting except very smallest As flipping finger has bitten few times wearing glove never got hurt broke fingernail OM LETTER TODAY THE VINYLWR TE WAY LI IAMASAT1I Since 1987 mail order company providing modeler EZ apply custom lettering logos stars etc choices type styles & colors decal custom cut pre-aligned & pre-spaced premium vinyl planes boats trains toys etc Heights 1/4 12 Priced right eg AMA er 1 high $250. color style Find out what can Sample infopack tree Please include #1 OSASE inquiries 16043 TULSA STREET GRANADA HILLS CA 91344 818-363-7131 - Mon Thur l0-4pm PST E-Mail vinyirt@reiaypointnet Plus $2 P/H Ca res add tax July1999 67
Edition: Model Aviation - 1999/07
Page Numbers: 63, 65, 66, 67
Edition: Model Aviation - 1999/07
Page Numbers: 63, 65, 66, 67
U Joe Wagner ffZ7x~ 0 ODEL AIRPLANE ENGINES have use almost seven decades discussions about throughout time topic recurs fuel Despite technical advances made since 1930s still seems just much misunderstanding ever about model engine fuel Raymond Yatess 1942 book Model Gasoline Engines filled two pages warning readers against practice souping up model fuel adding benzol acetone other secret ingredients Since model magazine articles have repeatedly issued similar cautions Yet theres never end burning ambition among modelers discover some new amazingly potent fuel mixture engines About year ago model flier Michigan began promoting new miracle model fuel ingredient made reclaimed deepfryer oil mail last month came suggestion reader column turpentine might excellent additive model fuel still recall racing fuel recipe developed fellow model club members circa 1947 After considerable experimentation came up ultimate brew consisting 25% castor oil wood alcohol shellac thinner methanol Nobody could convince fellow last three ingredients identical goal course power belief some modelers hold somewhere somehow theres magic chemicalmaybe quite common such turpentine acetonethat will unleash incredible extra power model engines Another belief miracle ingredient something companies manufacture model fuel have too unimaginative have tried fact model fuel makers imaginative anyone practically everything way inflammable substance has least considered model fuel ingredient Some have July1999 63 Argentinian DH 45 true ABC engine twin ball bearings performs best fuel 5% nitromethane lubricant old-time spark-ignition gasoline-burners SAE 70 oil easily potent Irvine 40 designed no-nitro FAI fuel starts readily throttles nicely found airports gas stations delivers dependable performance weather used purpose before detrimental effects ng nitromethane shortage early 1 950s fully appreciatedwas widely used rocket fuel ditertiary butyl peroxide instance Liquid Dynamite racing fuel mid-1940sbriefly used glow fuel accelerant worked well However contained picric acid explosive used British artillery shellsthe stuff shock-sensitive manufacturer know World War According Duke Fox tested Liquidwho included DTBP glow fuel decided handling Dynamite couple early engines power gain didntrisks far too high make continuing worthwhile amount muchand didnt compensate serious corrosion picric acid caused inside enginesThe fundamental facts about model engine fuel simple Some first glow fuels contained nitrobenzene Years laterparadoxical medical research showed particular solvent potent uel ingredient contains appreciably potential carcinogencombustion energy ordinary 94-octane lead-free El IMAA Membership Application ~ IZ Renewal LI FamiIyIIZ Date_________ IName I AddressI II City/TownI State/ Province_________________ Zip Code__________I II Phone__________________________________________ Fax___________________________________ I Chapter #_ AMA#___ MAAC CanadaI Annual Dues $1500 USA Add $1000 First Class $1500US Canada& Mexico $30OOUS Foreign IMake Check Money Order payable International Miniature Aircraft Association IMAAI I Any person flys resides United States must show proof membership Academy Model Aeronautics AMA order obtain IMAA membership Include copy AMA License number application Mail to Remittance Type IMAA Secretary/Treasurer Check D Money Order D Cashiers Check D Don E Vineyard1 year D 2 years D 3 years D Amount$______ 205 S HilIdale Road Family memberships available no magazine included Salina KS 67401 for $750 US year details contact secretary High Flight magazine printed quarterly mailed 2nd Class Bulk US & Canada AMA 99For 1st Class Postage Add $10 00 US United States & Canada July1999 65 A-M 10 diesel custom carburetor needed least Fox Eagle Ill designed manufactured during nitromethane 35% castor oil its fuel prevent overheating shortage Runs reliably zero-nitro glow fuel automotive gasoline Yet theres no practicable way harnessing fraction potential energy content engine fueleven methanol low scorer far heat energy content per pound comparisons According Van Nostrands Scientific Encyclopedia during complete combustion gasoline produces net energy output approximately 20000 BTU per pound Kerosenes about same Methanols rated 9000 BTU/pound ethyl alcohol does much better 12000 BTU methanol most-common ingredient model engine fuel has less half energy content gasoline Part answer amount air required complete combustion put term quotation marks because its engineering impossibility achievable laboratory Petroleum-based fuels such gasoline kerosene need 15 16 grams air complete oxidization gram fuel Ethyl alcohol needs nine grams airbut methanol requires mere 61/2 grams gram air standard atmospheric conditions roughly 50 cubic inches Remember though figures just given complete combustion doesnt occur engines very far ideal conditions model power plants operate demonstrated paradoxical fact maximum power output alcohol-fueled model engines require much larger air intakes gasoline- kerosene-burners Its still imperfectly understood exactly what goes combustion chambers model engines However few basic points well-established does no good release energy combustion chamber faster piston movement can accept Doing can cause damage such blown head gaskets burst glow plug seals broken pistons Thats high-nitro fuel provides little benefit engines run modest rpm advantage nitromethane engine fuel its exceedingly rapid combustion rate Thats vital 20000 rpm maximum available combustion period less millisecond sport-type model flying RC engines spend running time part-throttle dependable performance calls relatively mild slow-burning fuel Another much-misunderstood aspect model engine fuel its oil content points mentioned previous column deserves further explanation function oil coolant Canadian reader Ian McQueen objected heat produced during combustion goes out exhaust power stroke complete can oil fuel possibly carry away excess heat its supposed role coolant Ian has good point However cooling effect oil model fuel takes place instant combustion exhaust port acts like water injection big engines inert kieselguhr content dynamite noninflammable material moderates heat energy release absorbing some instant generation prevents detonation its well-known bad effects greater oil content two-stroke model fuel lower combustionchamber temperature George Aldrich San Antonio TX internationally known highperformance competition engines found distinct advantages using 33% oil content gasoline-fueled spark ignition engines standard blend 31 gas SAB 70 oil has used since 1932 George discovered 21 mix noticeably reduced operating temperature hot-running old-time sparkers improved performance Reducing oil content model fuel does have benefits some competition events Control Line Team Racing various Texaco endurance categories events fuel economy provides competitive edge minimizing unburnable ingredients ORDER HOURS Superior Balsa & Hobby Supply GRAIN & DENS S ELECTION 700 AM 700 PM 20-G Centralia Hawaiian Gardens CA 90716 PST CA TIME se add sufficient amount excess refunded shipping UPS Parcel Post PLUS $285 handling please call Monday Saturday $2500 Mm order n accept Visa Mastercard Checks 0 CA sales add 825% sales tax MFGRS & DEALERS Info 5621865-3220 0 FAX 562860-0327 Complete price list-SASE Shop hours 800AM 300PM Mon FriCALL FOR RESELLER 800 488-9525 OGRAM Pnces sobiect change 02/99wwwsuperiorbalsacombalsa@ixnetcomcom BALSA Bass sticks 2x balsa price BALSA SHEETS TRAILING EDGES 36 LEADING EDGES Aircraft Grade Birch Plywood Silka Spruce sticks 3 c balsa price~ 103648ConventionalSymmetncal 3347112o48 4648 1/16 INCH36 481/4 INCH30 483/32o 13142114 013964F 6012112012 STICK1/16 01294531l 03/4293712o24 1/8 013546nile 011144971 I1/64 1 1/leo 1/16101/401/4223031160139593/8 01105685 1/1603/32101/403/827331/4 015278112 0290 1/4o3/850 3/803/8s3 Ply 145295535 10353600 1/1601/217218/16 INCH36481732-5-202-591/16 1/leo 1/810141/401/229413/60167662/4031603/901/2651/201/21051/32 1/leo 3/1611151/405/937501/201791041/2o 3/41453/4 03/41603 Ply 55675 2500 1/1601/412151/403/442 56 1/160 3/813162 INCH364836 AILERONS3/401170 101185 1/1603/422295/1605/1827351/160238501/4 0157Ldg Edge Re6ective Tape 3503 Fl7 951503S5675 2600 5/160 3/831393/320246611/4 011/465 2122AN014361..485/1601/239 491/8 0249651/4 011/274 3/160260741/4 02606 BALSA SHEETS 3/320 3/3211135/1603/4146 1621/4 0268905/19011/474140275 525 1020 3800 . .3/8 02861195/16011/275 613163/8 INCH36481/2 021101435/1602861/161413001/6 3/3201/81214AI 150 3/3201/414183/803/636453/8011/2833/321602255 Ply20557511204000 3/3203/615193/801/245573 INCH36483/802951/8179 3/3201/219243/805/847591/320349693/8021/21063/162062853/16 3/3203/426 323/803/453 681/190344601/2 011/2951/42353254 Ply99200347685 2600 1/8 INCH3648Iizeic..IAa73/320352671/2 02 156 3/8 300 4201/4 1/8 03 63 6 1/2 510 7155 Ply125230 380 735 2850 1/801/81113 1/2o 1/249 643/160376103 1/8 03/161318 1/205/807 761/4 0354130 36 TRIANGLES BALSABLOCKS /3/8 1/801/41421 1/203/460 82 5/1603 109 152 000/00/150285 550 1000 3500 1/8o3/8 15233/6 031151701/401/4 /oo0/ 27Fly 1/801/22127 lajyN8..41/2 031552553/803/0 /rr/ 353048 1/803/42836 h/8o5/860 861/201/2 /000 / f 45103 120 2352651/2 215 93 1144INCH36483/403/4 //Ofl//1,,,,j 54104 157 3253784259 7//y61512004500 3/16 INCH36481/320478186101 2 175 245252335L116 L 3/160 3/1614231/18046692203 180 350423465t95I125 240 475 1750 3/1601/41827 Other FineProdects3/320482114I 3/1603/82129 NHP WestSystems1/8 0493134204 205 450530715Poplar 3/1601/22436& Bob Smith Epoxy3/1804106186 36 BIRCH DOWEL303 330 55S750065II 345 3/1603/430451/4 04152179 1/6 16 5/16 27304 405 77052512351/4 Lite185 675 2500 0 Tools Supplies3/8 04210205 3/16 17 3/8 37404 050 5001250/005Poplar125 CornpositsHardware1/2 04285336 1/4 20 1/2 54 CASBob Smith FlashBundles$295- $395Shyg Only tJBECHI 1/32o 12 In/into 105 51160 Trock Thin1/2 210185Bargain3648FOAM SHEETS Blue 2012024 365 Gapor1 oz3493001/3203 9 1/3204 611/801/6 361 3/1603/16 30 1/401/4 191 3/803/8 1121/201/2 81 Thick2 oz5955001/1603 8 1/1604 61/803/16 32 3/1601/4 123 1/403/8 15 3/001/2 1101/203/4 6 White 2012024 1758/002024 040 1328 1/N Oh/ok 8 OZ179516503/3203 81 3/3204 51/001/4 130 3/16o 3/8 /20 1/401/2 141 3/80 3/4 1 860hie2o24o48 630" EPP 2012024 550 /0 7/100 rhrg/ror 16 oz30001/0 03 6 1/8 04 /411/803/6 281 3/1601/2 17 1/403/4 10WhiteOx 12024 300EFF2o 12o48 1050 2oz thin gaptilling 1 seccore 5503/160353/160431/601/220 3/160 3/4113Limited availability CallWhite4o24o46 1275" 6FF 2o36 048 3050 Ode1SsI Thin1/2oz455365 1/4 03 4 1/4 o4 3 1/603/4 15 Gap or1 oz845665 13/6 03 3 3/8 04 2a Some stains wormholcs & irregulars Inconel Foam Cutting Wire et $3 00 Thick2oz149512001/2 03 /2 1/2 04 1215600 Handlg Odor UPS Overs/ze Shipg Chge 66 Model Aviation Racing Texaco fuel common among experts fly events us sport fliers advantages long engine life dependable performance less-than-optimum conditions make good case high oil percentage model fuelespecially diesels Some readers questioned need modern model diesels oldfashioned diesel fuel formula /s ether kerosene castor oil amateur model fuel blenders 1/3 figure has seldom meant precisely 3333% represents working value somewhere between would know better much castor oil model diesel fuel should contain manufacturers engines Lets see what recommend AE calls 30% castor during break-in sport flying 25% contest use Aurora specifies *I/ mix Russian makers Marz MK-17 engines Chinese Silver Swallow folks Czech MP Jet instructions call 40% castor oil content break-in 35% sport flying British Progress Aero Works PAW people recommend 30% break-in 24% plain-bearing 20% ballbearing engines model diesel manufacturers calls other lubricant castor oil above listing deliberately avoided including old-time replica diesel engines manufacturers mentioned produce modern-design shortstroke high-performance diesels conclusion international consensus diesel makersfrom Britain India Russia China Czech Republicis theyd surely among first know benefit use low oil percentages model diesel fuelor exotic lubricants such jet turbine oil reclaimed deep-fry cooking fat Thats useand recommendthe triedand-true diesel fuel blend approximately 1/ castor ether kerosene 2% 3% cetane booster added total quantity Heres real handy hint handstarting model engines us prefer using electric starter Ive found can retain feel fingerflipping propellers protecting against injury wearing glove right hand found some tough yet quite flexible cowhide work gloves discount store few years ago now use right engine starting except very smallest As flipping finger has bitten few times wearing glove never got hurt broke fingernail OM LETTER TODAY THE VINYLWR TE WAY LI IAMASAT1I Since 1987 mail order company providing modeler EZ apply custom lettering logos stars etc choices type styles & colors decal custom cut pre-aligned & pre-spaced premium vinyl planes boats trains toys etc Heights 1/4 12 Priced right eg AMA er 1 high $250. color style Find out what can Sample infopack tree Please include #1 OSASE inquiries 16043 TULSA STREET GRANADA HILLS CA 91344 818-363-7131 - Mon Thur l0-4pm PST E-Mail vinyirt@reiaypointnet Plus $2 P/H Ca res add tax July1999 67
Edition: Model Aviation - 1999/07
Page Numbers: 63, 65, 66, 67
U Joe Wagner ffZ7x~ 0 ODEL AIRPLANE ENGINES have use almost seven decades discussions about throughout time topic recurs fuel Despite technical advances made since 1930s still seems just much misunderstanding ever about model engine fuel Raymond Yatess 1942 book Model Gasoline Engines filled two pages warning readers against practice souping up model fuel adding benzol acetone other secret ingredients Since model magazine articles have repeatedly issued similar cautions Yet theres never end burning ambition among modelers discover some new amazingly potent fuel mixture engines About year ago model flier Michigan began promoting new miracle model fuel ingredient made reclaimed deepfryer oil mail last month came suggestion reader column turpentine might excellent additive model fuel still recall racing fuel recipe developed fellow model club members circa 1947 After considerable experimentation came up ultimate brew consisting 25% castor oil wood alcohol shellac thinner methanol Nobody could convince fellow last three ingredients identical goal course power belief some modelers hold somewhere somehow theres magic chemicalmaybe quite common such turpentine acetonethat will unleash incredible extra power model engines Another belief miracle ingredient something companies manufacture model fuel have too unimaginative have tried fact model fuel makers imaginative anyone practically everything way inflammable substance has least considered model fuel ingredient Some have July1999 63 Argentinian DH 45 true ABC engine twin ball bearings performs best fuel 5% nitromethane lubricant old-time spark-ignition gasoline-burners SAE 70 oil easily potent Irvine 40 designed no-nitro FAI fuel starts readily throttles nicely found airports gas stations delivers dependable performance weather used purpose before detrimental effects ng nitromethane shortage early 1 950s fully appreciatedwas widely used rocket fuel ditertiary butyl peroxide instance Liquid Dynamite racing fuel mid-1940sbriefly used glow fuel accelerant worked well However contained picric acid explosive used British artillery shellsthe stuff shock-sensitive manufacturer know World War According Duke Fox tested Liquidwho included DTBP glow fuel decided handling Dynamite couple early engines power gain didntrisks far too high make continuing worthwhile amount muchand didnt compensate serious corrosion picric acid caused inside enginesThe fundamental facts about model engine fuel simple Some first glow fuels contained nitrobenzene Years laterparadoxical medical research showed particular solvent potent uel ingredient contains appreciably potential carcinogencombustion energy ordinary 94-octane lead-free El IMAA Membership Application ~ IZ Renewal LI FamiIyIIZ Date_________ IName I AddressI II City/TownI State/ Province_________________ Zip Code__________I II Phone__________________________________________ Fax___________________________________ I Chapter #_ AMA#___ MAAC CanadaI Annual Dues $1500 USA Add $1000 First Class $1500US Canada& Mexico $30OOUS Foreign IMake Check Money Order payable International Miniature Aircraft Association IMAAI I Any person flys resides United States must show proof membership Academy Model Aeronautics AMA order obtain IMAA membership Include copy AMA License number application Mail to Remittance Type IMAA Secretary/Treasurer Check D Money Order D Cashiers Check D Don E Vineyard1 year D 2 years D 3 years D Amount$______ 205 S HilIdale Road Family memberships available no magazine included Salina KS 67401 for $750 US year details contact secretary High Flight magazine printed quarterly mailed 2nd Class Bulk US & Canada AMA 99For 1st Class Postage Add $10 00 US United States & Canada July1999 65 A-M 10 diesel custom carburetor needed least Fox Eagle Ill designed manufactured during nitromethane 35% castor oil its fuel prevent overheating shortage Runs reliably zero-nitro glow fuel automotive gasoline Yet theres no practicable way harnessing fraction potential energy content engine fueleven methanol low scorer far heat energy content per pound comparisons According Van Nostrands Scientific Encyclopedia during complete combustion gasoline produces net energy output approximately 20000 BTU per pound Kerosenes about same Methanols rated 9000 BTU/pound ethyl alcohol does much better 12000 BTU methanol most-common ingredient model engine fuel has less half energy content gasoline Part answer amount air required complete combustion put term quotation marks because its engineering impossibility achievable laboratory Petroleum-based fuels such gasoline kerosene need 15 16 grams air complete oxidization gram fuel Ethyl alcohol needs nine grams airbut methanol requires mere 61/2 grams gram air standard atmospheric conditions roughly 50 cubic inches Remember though figures just given complete combustion doesnt occur engines very far ideal conditions model power plants operate demonstrated paradoxical fact maximum power output alcohol-fueled model engines require much larger air intakes gasoline- kerosene-burners Its still imperfectly understood exactly what goes combustion chambers model engines However few basic points well-established does no good release energy combustion chamber faster piston movement can accept Doing can cause damage such blown head gaskets burst glow plug seals broken pistons Thats high-nitro fuel provides little benefit engines run modest rpm advantage nitromethane engine fuel its exceedingly rapid combustion rate Thats vital 20000 rpm maximum available combustion period less millisecond sport-type model flying RC engines spend running time part-throttle dependable performance calls relatively mild slow-burning fuel Another much-misunderstood aspect model engine fuel its oil content points mentioned previous column deserves further explanation function oil coolant Canadian reader Ian McQueen objected heat produced during combustion goes out exhaust power stroke complete can oil fuel possibly carry away excess heat its supposed role coolant Ian has good point However cooling effect oil model fuel takes place instant combustion exhaust port acts like water injection big engines inert kieselguhr content dynamite noninflammable material moderates heat energy release absorbing some instant generation prevents detonation its well-known bad effects greater oil content two-stroke model fuel lower combustionchamber temperature George Aldrich San Antonio TX internationally known highperformance competition engines found distinct advantages using 33% oil content gasoline-fueled spark ignition engines standard blend 31 gas SAB 70 oil has used since 1932 George discovered 21 mix noticeably reduced operating temperature hot-running old-time sparkers improved performance Reducing oil content model fuel does have benefits some competition events Control Line Team Racing various Texaco endurance categories events fuel economy provides competitive edge minimizing unburnable ingredients ORDER HOURS Superior Balsa & Hobby Supply GRAIN & DENS S ELECTION 700 AM 700 PM 20-G Centralia Hawaiian Gardens CA 90716 PST CA TIME se add sufficient amount excess refunded shipping UPS Parcel Post PLUS $285 handling please call Monday Saturday $2500 Mm order n accept Visa Mastercard Checks 0 CA sales add 825% sales tax MFGRS & DEALERS Info 5621865-3220 0 FAX 562860-0327 Complete price list-SASE Shop hours 800AM 300PM Mon FriCALL FOR RESELLER 800 488-9525 OGRAM Pnces sobiect change 02/99wwwsuperiorbalsacombalsa@ixnetcomcom BALSA Bass sticks 2x balsa price BALSA SHEETS TRAILING EDGES 36 LEADING EDGES Aircraft Grade Birch Plywood Silka Spruce sticks 3 c balsa price~ 103648ConventionalSymmetncal 3347112o48 4648 1/16 INCH36 481/4 INCH30 483/32o 13142114 013964F 6012112012 STICK1/16 01294531l 03/4293712o24 1/8 013546nile 011144971 I1/64 1 1/leo 1/16101/401/4223031160139593/8 01105685 1/1603/32101/403/827331/4 015278112 0290 1/4o3/850 3/803/8s3 Ply 145295535 10353600 1/1601/217218/16 INCH36481732-5-202-591/16 1/leo 1/810141/401/229413/60167662/4031603/901/2651/201/21051/32 1/leo 3/1611151/405/937501/201791041/2o 3/41453/4 03/41603 Ply 55675 2500 1/1601/412151/403/442 56 1/160 3/813162 INCH364836 AILERONS3/401170 101185 1/1603/422295/1605/1827351/160238501/4 0157Ldg Edge Re6ective Tape 3503 Fl7 951503S5675 2600 5/160 3/831393/320246611/4 011/465 2122AN014361..485/1601/239 491/8 0249651/4 011/274 3/160260741/4 02606 BALSA SHEETS 3/320 3/3211135/1603/4146 1621/4 0268905/19011/474140275 525 1020 3800 . .3/8 02861195/16011/275 613163/8 INCH36481/2 021101435/1602861/161413001/6 3/3201/81214AI 150 3/3201/414183/803/636453/8011/2833/321602255 Ply20557511204000 3/3203/615193/801/245573 INCH36483/802951/8179 3/3201/219243/805/847591/320349693/8021/21063/162062853/16 3/3203/426 323/803/453 681/190344601/2 011/2951/42353254 Ply99200347685 2600 1/8 INCH3648Iizeic..IAa73/320352671/2 02 156 3/8 300 4201/4 1/8 03 63 6 1/2 510 7155 Ply125230 380 735 2850 1/801/81113 1/2o 1/249 643/160376103 1/8 03/161318 1/205/807 761/4 0354130 36 TRIANGLES BALSABLOCKS /3/8 1/801/41421 1/203/460 82 5/1603 109 152 000/00/150285 550 1000 3500 1/8o3/8 15233/6 031151701/401/4 /oo0/ 27Fly 1/801/22127 lajyN8..41/2 031552553/803/0 /rr/ 353048 1/803/42836 h/8o5/860 861/201/2 /000 / f 45103 120 2352651/2 215 93 1144INCH36483/403/4 //Ofl//1,,,,j 54104 157 3253784259 7//y61512004500 3/16 INCH36481/320478186101 2 175 245252335L116 L 3/160 3/1614231/18046692203 180 350423465t95I125 240 475 1750 3/1601/41827 Other FineProdects3/320482114I 3/1603/82129 NHP WestSystems1/8 0493134204 205 450530715Poplar 3/1601/22436& Bob Smith Epoxy3/1804106186 36 BIRCH DOWEL303 330 55S750065II 345 3/1603/430451/4 04152179 1/6 16 5/16 27304 405 77052512351/4 Lite185 675 2500 0 Tools Supplies3/8 04210205 3/16 17 3/8 37404 050 5001250/005Poplar125 CornpositsHardware1/2 04285336 1/4 20 1/2 54 CASBob Smith FlashBundles$295- $395Shyg Only tJBECHI 1/32o 12 In/into 105 51160 Trock Thin1/2 210185Bargain3648FOAM SHEETS Blue 2012024 365 Gapor1 oz3493001/3203 9 1/3204 611/801/6 361 3/1603/16 30 1/401/4 191 3/803/8 1121/201/2 81 Thick2 oz5955001/1603 8 1/1604 61/803/16 32 3/1601/4 123 1/403/8 15 3/001/2 1101/203/4 6 White 2012024 1758/002024 040 1328 1/N Oh/ok 8 OZ179516503/3203 81 3/3204 51/001/4 130 3/16o 3/8 /20 1/401/2 141 3/80 3/4 1 860hie2o24o48 630" EPP 2012024 550 /0 7/100 rhrg/ror 16 oz30001/0 03 6 1/8 04 /411/803/6 281 3/1601/2 17 1/403/4 10WhiteOx 12024 300EFF2o 12o48 1050 2oz thin gaptilling 1 seccore 5503/160353/160431/601/220 3/160 3/4113Limited availability CallWhite4o24o46 1275" 6FF 2o36 048 3050 Ode1SsI Thin1/2oz455365 1/4 03 4 1/4 o4 3 1/603/4 15 Gap or1 oz845665 13/6 03 3 3/8 04 2a Some stains wormholcs & irregulars Inconel Foam Cutting Wire et $3 00 Thick2oz149512001/2 03 /2 1/2 04 1215600 Handlg Odor UPS Overs/ze Shipg Chge 66 Model Aviation Racing Texaco fuel common among experts fly events us sport fliers advantages long engine life dependable performance less-than-optimum conditions make good case high oil percentage model fuelespecially diesels Some readers questioned need modern model diesels oldfashioned diesel fuel formula /s ether kerosene castor oil amateur model fuel blenders 1/3 figure has seldom meant precisely 3333% represents working value somewhere between would know better much castor oil model diesel fuel should contain manufacturers engines Lets see what recommend AE calls 30% castor during break-in sport flying 25% contest use Aurora specifies *I/ mix Russian makers Marz MK-17 engines Chinese Silver Swallow folks Czech MP Jet instructions call 40% castor oil content break-in 35% sport flying British Progress Aero Works PAW people recommend 30% break-in 24% plain-bearing 20% ballbearing engines model diesel manufacturers calls other lubricant castor oil above listing deliberately avoided including old-time replica diesel engines manufacturers mentioned produce modern-design shortstroke high-performance diesels conclusion international consensus diesel makersfrom Britain India Russia China Czech Republicis theyd surely among first know benefit use low oil percentages model diesel fuelor exotic lubricants such jet turbine oil reclaimed deep-fry cooking fat Thats useand recommendthe triedand-true diesel fuel blend approximately 1/ castor ether kerosene 2% 3% cetane booster added total quantity Heres real handy hint handstarting model engines us prefer using electric starter Ive found can retain feel fingerflipping propellers protecting against injury wearing glove right hand found some tough yet quite flexible cowhide work gloves discount store few years ago now use right engine starting except very smallest As flipping finger has bitten few times wearing glove never got hurt broke fingernail OM LETTER TODAY THE VINYLWR TE WAY LI IAMASAT1I Since 1987 mail order company providing modeler EZ apply custom lettering logos stars etc choices type styles & colors decal custom cut pre-aligned & pre-spaced premium vinyl planes boats trains toys etc Heights 1/4 12 Priced right eg AMA er 1 high $250. color style Find out what can Sample infopack tree Please include #1 OSASE inquiries 16043 TULSA STREET GRANADA HILLS CA 91344 818-363-7131 - Mon Thur l0-4pm PST E-Mail vinyirt@reiaypointnet Plus $2 P/H Ca res add tax July1999 67
Edition: Model Aviation - 1999/07
Page Numbers: 63, 65, 66, 67
U Joe Wagner ffZ7x~ 0 ODEL AIRPLANE ENGINES have use almost seven decades discussions about throughout time topic recurs fuel Despite technical advances made since 1930s still seems just much misunderstanding ever about model engine fuel Raymond Yatess 1942 book Model Gasoline Engines filled two pages warning readers against practice souping up model fuel adding benzol acetone other secret ingredients Since model magazine articles have repeatedly issued similar cautions Yet theres never end burning ambition among modelers discover some new amazingly potent fuel mixture engines About year ago model flier Michigan began promoting new miracle model fuel ingredient made reclaimed deepfryer oil mail last month came suggestion reader column turpentine might excellent additive model fuel still recall racing fuel recipe developed fellow model club members circa 1947 After considerable experimentation came up ultimate brew consisting 25% castor oil wood alcohol shellac thinner methanol Nobody could convince fellow last three ingredients identical goal course power belief some modelers hold somewhere somehow theres magic chemicalmaybe quite common such turpentine acetonethat will unleash incredible extra power model engines Another belief miracle ingredient something companies manufacture model fuel have too unimaginative have tried fact model fuel makers imaginative anyone practically everything way inflammable substance has least considered model fuel ingredient Some have July1999 63 Argentinian DH 45 true ABC engine twin ball bearings performs best fuel 5% nitromethane lubricant old-time spark-ignition gasoline-burners SAE 70 oil easily potent Irvine 40 designed no-nitro FAI fuel starts readily throttles nicely found airports gas stations delivers dependable performance weather used purpose before detrimental effects ng nitromethane shortage early 1 950s fully appreciatedwas widely used rocket fuel ditertiary butyl peroxide instance Liquid Dynamite racing fuel mid-1940sbriefly used glow fuel accelerant worked well However contained picric acid explosive used British artillery shellsthe stuff shock-sensitive manufacturer know World War According Duke Fox tested Liquidwho included DTBP glow fuel decided handling Dynamite couple early engines power gain didntrisks far too high make continuing worthwhile amount muchand didnt compensate serious corrosion picric acid caused inside enginesThe fundamental facts about model engine fuel simple Some first glow fuels contained nitrobenzene Years laterparadoxical medical research showed particular solvent potent uel ingredient contains appreciably potential carcinogencombustion energy ordinary 94-octane lead-free El IMAA Membership Application ~ IZ Renewal LI FamiIyIIZ Date_________ IName I AddressI II City/TownI State/ Province_________________ Zip Code__________I II Phone__________________________________________ Fax___________________________________ I Chapter #_ AMA#___ MAAC CanadaI Annual Dues $1500 USA Add $1000 First Class $1500US Canada& Mexico $30OOUS Foreign IMake Check Money Order payable International Miniature Aircraft Association IMAAI I Any person flys resides United States must show proof membership Academy Model Aeronautics AMA order obtain IMAA membership Include copy AMA License number application Mail to Remittance Type IMAA Secretary/Treasurer Check D Money Order D Cashiers Check D Don E Vineyard1 year D 2 years D 3 years D Amount$______ 205 S HilIdale Road Family memberships available no magazine included Salina KS 67401 for $750 US year details contact secretary High Flight magazine printed quarterly mailed 2nd Class Bulk US & Canada AMA 99For 1st Class Postage Add $10 00 US United States & Canada July1999 65 A-M 10 diesel custom carburetor needed least Fox Eagle Ill designed manufactured during nitromethane 35% castor oil its fuel prevent overheating shortage Runs reliably zero-nitro glow fuel automotive gasoline Yet theres no practicable way harnessing fraction potential energy content engine fueleven methanol low scorer far heat energy content per pound comparisons According Van Nostrands Scientific Encyclopedia during complete combustion gasoline produces net energy output approximately 20000 BTU per pound Kerosenes about same Methanols rated 9000 BTU/pound ethyl alcohol does much better 12000 BTU methanol most-common ingredient model engine fuel has less half energy content gasoline Part answer amount air required complete combustion put term quotation marks because its engineering impossibility achievable laboratory Petroleum-based fuels such gasoline kerosene need 15 16 grams air complete oxidization gram fuel Ethyl alcohol needs nine grams airbut methanol requires mere 61/2 grams gram air standard atmospheric conditions roughly 50 cubic inches Remember though figures just given complete combustion doesnt occur engines very far ideal conditions model power plants operate demonstrated paradoxical fact maximum power output alcohol-fueled model engines require much larger air intakes gasoline- kerosene-burners Its still imperfectly understood exactly what goes combustion chambers model engines However few basic points well-established does no good release energy combustion chamber faster piston movement can accept Doing can cause damage such blown head gaskets burst glow plug seals broken pistons Thats high-nitro fuel provides little benefit engines run modest rpm advantage nitromethane engine fuel its exceedingly rapid combustion rate Thats vital 20000 rpm maximum available combustion period less millisecond sport-type model flying RC engines spend running time part-throttle dependable performance calls relatively mild slow-burning fuel Another much-misunderstood aspect model engine fuel its oil content points mentioned previous column deserves further explanation function oil coolant Canadian reader Ian McQueen objected heat produced during combustion goes out exhaust power stroke complete can oil fuel possibly carry away excess heat its supposed role coolant Ian has good point However cooling effect oil model fuel takes place instant combustion exhaust port acts like water injection big engines inert kieselguhr content dynamite noninflammable material moderates heat energy release absorbing some instant generation prevents detonation its well-known bad effects greater oil content two-stroke model fuel lower combustionchamber temperature George Aldrich San Antonio TX internationally known highperformance competition engines found distinct advantages using 33% oil content gasoline-fueled spark ignition engines standard blend 31 gas SAB 70 oil has used since 1932 George discovered 21 mix noticeably reduced operating temperature hot-running old-time sparkers improved performance Reducing oil content model fuel does have benefits some competition events Control Line Team Racing various Texaco endurance categories events fuel economy provides competitive edge minimizing unburnable ingredients ORDER HOURS Superior Balsa & Hobby Supply GRAIN & DENS S ELECTION 700 AM 700 PM 20-G Centralia Hawaiian Gardens CA 90716 PST CA TIME se add sufficient amount excess refunded shipping UPS Parcel Post PLUS $285 handling please call Monday Saturday $2500 Mm order n accept Visa Mastercard Checks 0 CA sales add 825% sales tax MFGRS & DEALERS Info 5621865-3220 0 FAX 562860-0327 Complete price list-SASE Shop hours 800AM 300PM Mon FriCALL FOR RESELLER 800 488-9525 OGRAM Pnces sobiect change 02/99wwwsuperiorbalsacombalsa@ixnetcomcom BALSA Bass sticks 2x balsa price BALSA SHEETS TRAILING EDGES 36 LEADING EDGES Aircraft Grade Birch Plywood Silka Spruce sticks 3 c balsa price~ 103648ConventionalSymmetncal 3347112o48 4648 1/16 INCH36 481/4 INCH30 483/32o 13142114 013964F 6012112012 STICK1/16 01294531l 03/4293712o24 1/8 013546nile 011144971 I1/64 1 1/leo 1/16101/401/4223031160139593/8 01105685 1/1603/32101/403/827331/4 015278112 0290 1/4o3/850 3/803/8s3 Ply 145295535 10353600 1/1601/217218/16 INCH36481732-5-202-591/16 1/leo 1/810141/401/229413/60167662/4031603/901/2651/201/21051/32 1/leo 3/1611151/405/937501/201791041/2o 3/41453/4 03/41603 Ply 55675 2500 1/1601/412151/403/442 56 1/160 3/813162 INCH364836 AILERONS3/401170 101185 1/1603/422295/1605/1827351/160238501/4 0157Ldg Edge Re6ective Tape 3503 Fl7 951503S5675 2600 5/160 3/831393/320246611/4 011/465 2122AN014361..485/1601/239 491/8 0249651/4 011/274 3/160260741/4 02606 BALSA SHEETS 3/320 3/3211135/1603/4146 1621/4 0268905/19011/474140275 525 1020 3800 . .3/8 02861195/16011/275 613163/8 INCH36481/2 021101435/1602861/161413001/6 3/3201/81214AI 150 3/3201/414183/803/636453/8011/2833/321602255 Ply20557511204000 3/3203/615193/801/245573 INCH36483/802951/8179 3/3201/219243/805/847591/320349693/8021/21063/162062853/16 3/3203/426 323/803/453 681/190344601/2 011/2951/42353254 Ply99200347685 2600 1/8 INCH3648Iizeic..IAa73/320352671/2 02 156 3/8 300 4201/4 1/8 03 63 6 1/2 510 7155 Ply125230 380 735 2850 1/801/81113 1/2o 1/249 643/160376103 1/8 03/161318 1/205/807 761/4 0354130 36 TRIANGLES BALSABLOCKS /3/8 1/801/41421 1/203/460 82 5/1603 109 152 000/00/150285 550 1000 3500 1/8o3/8 15233/6 031151701/401/4 /oo0/ 27Fly 1/801/22127 lajyN8..41/2 031552553/803/0 /rr/ 353048 1/803/42836 h/8o5/860 861/201/2 /000 / f 45103 120 2352651/2 215 93 1144INCH36483/403/4 //Ofl//1,,,,j 54104 157 3253784259 7//y61512004500 3/16 INCH36481/320478186101 2 175 245252335L116 L 3/160 3/1614231/18046692203 180 350423465t95I125 240 475 1750 3/1601/41827 Other FineProdects3/320482114I 3/1603/82129 NHP WestSystems1/8 0493134204 205 450530715Poplar 3/1601/22436& Bob Smith Epoxy3/1804106186 36 BIRCH DOWEL303 330 55S750065II 345 3/1603/430451/4 04152179 1/6 16 5/16 27304 405 77052512351/4 Lite185 675 2500 0 Tools Supplies3/8 04210205 3/16 17 3/8 37404 050 5001250/005Poplar125 CornpositsHardware1/2 04285336 1/4 20 1/2 54 CASBob Smith FlashBundles$295- $395Shyg Only tJBECHI 1/32o 12 In/into 105 51160 Trock Thin1/2 210185Bargain3648FOAM SHEETS Blue 2012024 365 Gapor1 oz3493001/3203 9 1/3204 611/801/6 361 3/1603/16 30 1/401/4 191 3/803/8 1121/201/2 81 Thick2 oz5955001/1603 8 1/1604 61/803/16 32 3/1601/4 123 1/403/8 15 3/001/2 1101/203/4 6 White 2012024 1758/002024 040 1328 1/N Oh/ok 8 OZ179516503/3203 81 3/3204 51/001/4 130 3/16o 3/8 /20 1/401/2 141 3/80 3/4 1 860hie2o24o48 630" EPP 2012024 550 /0 7/100 rhrg/ror 16 oz30001/0 03 6 1/8 04 /411/803/6 281 3/1601/2 17 1/403/4 10WhiteOx 12024 300EFF2o 12o48 1050 2oz thin gaptilling 1 seccore 5503/160353/160431/601/220 3/160 3/4113Limited availability CallWhite4o24o46 1275" 6FF 2o36 048 3050 Ode1SsI Thin1/2oz455365 1/4 03 4 1/4 o4 3 1/603/4 15 Gap or1 oz845665 13/6 03 3 3/8 04 2a Some stains wormholcs & irregulars Inconel Foam Cutting Wire et $3 00 Thick2oz149512001/2 03 /2 1/2 04 1215600 Handlg Odor UPS Overs/ze Shipg Chge 66 Model Aviation Racing Texaco fuel common among experts fly events us sport fliers advantages long engine life dependable performance less-than-optimum conditions make good case high oil percentage model fuelespecially diesels Some readers questioned need modern model diesels oldfashioned diesel fuel formula /s ether kerosene castor oil amateur model fuel blenders 1/3 figure has seldom meant precisely 3333% represents working value somewhere between would know better much castor oil model diesel fuel should contain manufacturers engines Lets see what recommend AE calls 30% castor during break-in sport flying 25% contest use Aurora specifies *I/ mix Russian makers Marz MK-17 engines Chinese Silver Swallow folks Czech MP Jet instructions call 40% castor oil content break-in 35% sport flying British Progress Aero Works PAW people recommend 30% break-in 24% plain-bearing 20% ballbearing engines model diesel manufacturers calls other lubricant castor oil above listing deliberately avoided including old-time replica diesel engines manufacturers mentioned produce modern-design shortstroke high-performance diesels conclusion international consensus diesel makersfrom Britain India Russia China Czech Republicis theyd surely among first know benefit use low oil percentages model diesel fuelor exotic lubricants such jet turbine oil reclaimed deep-fry cooking fat Thats useand recommendthe triedand-true diesel fuel blend approximately 1/ castor ether kerosene 2% 3% cetane booster added total quantity Heres real handy hint handstarting model engines us prefer using electric starter Ive found can retain feel fingerflipping propellers protecting against injury wearing glove right hand found some tough yet quite flexible cowhide work gloves discount store few years ago now use right engine starting except very smallest As flipping finger has bitten few times wearing glove never got hurt broke fingernail OM LETTER TODAY THE VINYLWR TE WAY LI IAMASAT1I Since 1987 mail order company providing modeler EZ apply custom lettering logos stars etc choices type styles & colors decal custom cut pre-aligned & pre-spaced premium vinyl planes boats trains toys etc Heights 1/4 12 Priced right eg AMA er 1 high $250. color style Find out what can Sample infopack tree Please include #1 OSASE inquiries 16043 TULSA STREET GRANADA HILLS CA 91344 818-363-7131 - Mon Thur l0-4pm PST E-Mail vinyirt@reiaypointnet Plus $2 P/H Ca res add tax July1999 67
