THIS MORNING started wondering just who began Speed madness first Control Line flier use stop watch mea sure lines calculate speed first Speed contest what club orga nized What engines used What speeds won Does anyone Out know engines ignition course did anyone experiment alcohol nitro added fuel doubt early engines could stand hot fuel imagine quite few blew up wasnt long until beefed-up engines appeared pioneers before Hornet Ball McCoy Did Speed flying start before aerobatics Before racing soon after U-control invented right now has close 50th anniversary Speed flying Ive seen write-ups about first Free Flight engine-powered flights very little about early Speed flying readers have such information please write let know Send photos too didnt start flying speed until 1949 missed ignition fun first engine McCoy 19 just before ball bearing Readheads first airplane used plywood crutch 2 x 12-in balsa wing Tornado 7-9 prop Francisco Laboratories Power Mist fuel Ill never forget nitro benzene Shinola shoe shine smell some Ohlsson Rice 30 Plus didnt dare run anything hot straight first contest speed 68 mph good enough second place Ive heard little about Nostalgia Speed have no rules other information has such information please send still have old McCoys Doolings old airplanes might fun run var nish out again eventually get tired beating heads trying keep up new tech nology better performance dream re verting times easier fun think thats main recollectionmore fun forget bad runs burned out glow plugs broken rods holes pistons ruined rings splat tered airplanes oniy remember good times good flights good friends have several fun classes such 21 Sport Sport Jet speed Foxberg rac ing Old Timer Free Flight special Quickie 500 RC Pylon Its difficult settle rules keep things simple yet competitive such events have specify restrict almost everythingairplane engine fuel prop nostalgia events fun too allow us go back build favorite alrplanes again build ones heard never time fly first time round Texas boys have having fun Sport Jet event restricted stock engines ex ternal two-line controls standard fuel consist ing 80% methanol 20% methyl ethylketone MEK finished airplane havent flown yet Its tough find flying site Continued pare 173 ne autnors all-aluminum Sport Jet left Engine stock Dyna-Jet purchased dollar community auction Restrictions un official class require stock engines external two-line controls standard fuel 80% methanol 20% methyl-ethylkeytone Charles Serie right Lebanon Indiana test running Open class jet job last years Cold Cash Speed Bash Dayton Ohio Helping him Gordon Thomas Schwenksvllle Pennsylvania Jets troublesome day didnt want run cool damp weather Bob Franklin Tom Blankman St Louis area flew inverted-engine 21 Sport Speed model second place Dayton Cold Cash Speed Bash last September pictures show bare minimum dolly used take-off drops off flight model lands brass skid bolted head Rossi 21 engine Continued page 173 March 1991 71 Conoi Line Speed Glenn Lee 8I Mandrake Batavia IL 60510 vintage model built author early fifties copied Bill Wlsnlewskls plan first Pink Lady designs used Mccoy 19 Sports man power fuselage narrow balloon used tank Top speed 102 mph events contest reports especially photos CL Scale activity address very top columnLi CL Aerobatics/McMiIIan Continued page 70 farmers another technique consider As Ive mentioned previous columns thin balsa sand wiches especially centers cut out can provide excellent strength little weight Layers %2 / ply equally well ap plication installing fuselage formers try gluing / x A-in piece across fuse perpendicular former creates Ibeam strengthens piece virtually no weight increase youre planning latest effort also analyze lay out pans grain going oriented What type wood grain will use application suggest scratch-building kit pieces beforehandat least major compo nents accomplishes couple things gets thinking about best piece allows use smaller bits time efficiently Big chunks time secm just hard come wood days triangulating Some months ago column recommended triangulating everything still layout some balsa wing skins foam cov ering saw recently showed grain run ning parallel trailing edge hinge line Though saves some balsa sheet per wing halt still dont recommend Run grain parallel leading edge gives trian gulation makes wing easier sand wind up torsionally stable panel Use triangulation elevators flaps too like cover stabs single piece per sur face use quarter-grain wood achieve desired stiffness solid surfaces run grain parallel trailing edge same effect Now tricky part Balsa alive will move sand paint wet can look stress relief Cut edge sheet true up edge wont necessarily end up true Wet side piece find bows Much depends what well grain wood piece unique maxim Whatever do both sides wood holds true very last coat paint Lets say build wing bows Dont give up happens us El Diablo just finished building major bow over inch set trailing edge course IGLOWaUG DESIGNED Puts sting engine FOR LONGER HIGHER5 Get starts GloBee Unique flat-wound spiral coil element high temperature glass-to-metal seal add up faster ignition increased RPM GloBee plugs specified original engine manufacturers purchased over over again Pylon control line racers find GloBee plugs best GloBee plugs designed fit popular engines used today unavailable locally write call Twinn-K collect pricing & delivery information & FREE Catalog MAKE THE GLOBEE / INDY CONNECTION Twinn-K Inc 10296 W Washington St Indianapolis IN 46231 Telephone 317-839-6579 FAX 317-839-8928 limits heres corrected problem First mixed some ammonia water loosen chemical bonding balsa al low its shape molded After saturating bowed part ammonia-water mixture pinned wing building board tips braced opposite bow Since springback usually about 50 percent used amount about equal opposite bow must admit took few times get right persever ance paid long run technique will work raw balsa part dont try painted surfaces can use twisted fuselages pressure must ap plied opposite existing twist until part completely dryLI CL Speed/Lee Continued page 71 much noise think Ill put wheels use demonstrations air shows grass fields Talking about jets Doug Dahlke friend stunt flier Oshkosh Wisconsin sent clipping news item about some experimental jets believe flown Air Force 1 years ago airplanes powered engines built using five Dyna-Jet heads mounted front 6-in diameter tail pipe about four feet long engines pro duced about 30 pounds thrust mounted Control Line models flown 200ft lines Controls extended through swivel connections pylon flying station out side circle Speeds attained over 200 mph single-engined model speeds werent mentioned twin engine job sound like quarter-scale airplanes before RC craze took over Writing column fun could use input Speed fliers Ive stunt RC modelers call usually looking power and/or better reliability Stunt fliers want smooth steady runs RC fliers want everythingI have never claimed expert can usually get stuff run fairly well bought brand new 05 28 RC engine swap shop other day five bucks Someone tried take apart before running really messed up ring broken pieces chewed up piston sleeve chunks broken out exhaust stack prying screwdriver dont know Serious Helicopter Hot Dogging SjX-Pf PISTON/CYLINDER Superior Horsepower w/ Tuned Pipes True ABC Construction Finest Materials & Workmanship Arch Port Available OS SFN-RFN Other Types & Sizes Available Pattern Racing vi BLI ES Send $1 00 complete Catalogue Engines Accessories PERFORMANCE SPECIALTIES 729-1658 PO Box 4003 Carlsbad CA 92008 March 1991 173 Send S2OO Catalog ot iians Accessories ond uppIIes Credited First Order S25 .....UJIl]U iiei w4Ibe]uE wm Ieiu i~iiiniiIew u mum wzvuwi take engine apart dont very least ask someone does made sleeve pul icr tapping Center brass bar spanned across sleeve caught top opposite ports long bolt went up washer piece tubing sat crankcase over sleeve pulled sleeve Out easily think can save everything except ring piston Ill have adapt plate cover holes between muffler engine couple hints RC fliers Sometimes ringed engine will lose compression power first idea hits ring worn out isnt always problem since rings normally last long time have able expand move freely piston groove groove gets filled var nish hot lean runs burned fuel lubri cants ring cannot match cylinder wall proper compression fix remove piston carefully properly course dissolve clean off varnish Its var nish use varnish remover furniture strip per Dont take ring off piston just get loose clean groove soft brush Dont damage groove knives scrap ers Follow safety directions about fire toxicity careful reassembling ring pinned pinned ring has rotated properly before can compressed re-enter sleeve use gun lubricant called Sheath made Birchwood Casey after-run oil helps dissolve varnish build up pre vents rust Maybe Ill have some speed information next column CL Racing/Ballard Continued page 72 find competitors using Lil Quickie will modify round Dons tank var ious ways recess fuselage well streamline mounting tank least good basic unit can modify easily pickup tube tank usually mounted two specific ways typical mounting along outboard side tank line center bar needle valve end ap proximately half-inch rear tank usually use brass tab soldered tubing done rear cover tank off avoid tube coming loose dont way Ill file end tube form little tab bend around side tank end tank backplate soldered place locks tube position other way install tube approxi mately 14 inside tank front end again along thrust line just outside edge tank problem setup once engine started must tilt aircraft ward make sure fuel feed continues aircraft generally sits nose-up attitude causes fuel run back tank Un less plane tilted level attitude engine will run short length time before air enters line course no problem after take-off since centrifugal force keeps fuel level constant point tank Gb Bee plug evaluation November re ceived some Gb Bee prototype lL 4L plugs evaluation plugs incorporate new type ceramic glass body plug As know extremely lean runs high engine compression setups cause glass typical glow plug body melt slightly sur face embed coiled wire thus insulating wire exposure fuel mixture combustion chamber causing engine go rich happens may also cause hard start ing though battery voltage may turned up can done using Gb 1 Drill hole No 18 drill size bulkhead firewall up 3/8 thick 2 Insert shaft Bulkhead Fitting through hole 3 Screw nut onto backside fitting Bulkhead Fittings Fourmost Bulkhead Fittin s simple method feed fuel veri1 lines through solid bulkheads 4 Slip fuel vent tubes job done_________________ Bulkhead Fittings provide sealed tank compartment eliminate fuel line chafing Color coded easy identification Weight 1/2 gram Price 2 $295 No 121 FOURMOST PRODUCTS Size 3/32 4040 24th Avenue Forest Grove OR 97116 503 357-2732 174 Model Aviation Bob Fiorenze1 Hobby Center Inc UPS Orders 5hipped Daily Dealer yellow Aircraft Send $300 fo yellow Info PackageZ Visit oar showenon 35 nein oer D sney Wo NEW Cosean Boilding sern 420 West SR 43440713274383 Winter Springs FL 32708Fax 407 327 7148 DIELS ENGI [RING INC 0 PO BOX 101 WOO1JVILLE OHIO 43469 RUBBER POWERED FREE FLIGHT SCALE PLANS AND KITS NEw PEANUT SCALE KIT KIT #14 RYAN FRi FIREBALL THIS COMPLETE KIT FEATURES CANOPY DECALS PRINTWOOD ETC PRICE $1350 PLUS $250 SHIPPING 14 KITS AND 65 PLANS AVAILABLE SEVERAL MORE NE KITS FOR SPRING 1991 DELIVERY SEND $150 FOR COMPLETE CATALOG
Edition: Model Aviation - 1991/03
Page Numbers: 71, 173, 174
THIS MORNING started wondering just who began Speed madness first Control Line flier use stop watch mea sure lines calculate speed first Speed contest what club orga nized What engines used What speeds won Does anyone Out know engines ignition course did anyone experiment alcohol nitro added fuel doubt early engines could stand hot fuel imagine quite few blew up wasnt long until beefed-up engines appeared pioneers before Hornet Ball McCoy Did Speed flying start before aerobatics Before racing soon after U-control invented right now has close 50th anniversary Speed flying Ive seen write-ups about first Free Flight engine-powered flights very little about early Speed flying readers have such information please write let know Send photos too didnt start flying speed until 1949 missed ignition fun first engine McCoy 19 just before ball bearing Readheads first airplane used plywood crutch 2 x 12-in balsa wing Tornado 7-9 prop Francisco Laboratories Power Mist fuel Ill never forget nitro benzene Shinola shoe shine smell some Ohlsson Rice 30 Plus didnt dare run anything hot straight first contest speed 68 mph good enough second place Ive heard little about Nostalgia Speed have no rules other information has such information please send still have old McCoys Doolings old airplanes might fun run var nish out again eventually get tired beating heads trying keep up new tech nology better performance dream re verting times easier fun think thats main recollectionmore fun forget bad runs burned out glow plugs broken rods holes pistons ruined rings splat tered airplanes oniy remember good times good flights good friends have several fun classes such 21 Sport Sport Jet speed Foxberg rac ing Old Timer Free Flight special Quickie 500 RC Pylon Its difficult settle rules keep things simple yet competitive such events have specify restrict almost everythingairplane engine fuel prop nostalgia events fun too allow us go back build favorite alrplanes again build ones heard never time fly first time round Texas boys have having fun Sport Jet event restricted stock engines ex ternal two-line controls standard fuel consist ing 80% methanol 20% methyl ethylketone MEK finished airplane havent flown yet Its tough find flying site Continued pare 173 ne autnors all-aluminum Sport Jet left Engine stock Dyna-Jet purchased dollar community auction Restrictions un official class require stock engines external two-line controls standard fuel 80% methanol 20% methyl-ethylkeytone Charles Serie right Lebanon Indiana test running Open class jet job last years Cold Cash Speed Bash Dayton Ohio Helping him Gordon Thomas Schwenksvllle Pennsylvania Jets troublesome day didnt want run cool damp weather Bob Franklin Tom Blankman St Louis area flew inverted-engine 21 Sport Speed model second place Dayton Cold Cash Speed Bash last September pictures show bare minimum dolly used take-off drops off flight model lands brass skid bolted head Rossi 21 engine Continued page 173 March 1991 71 Conoi Line Speed Glenn Lee 8I Mandrake Batavia IL 60510 vintage model built author early fifties copied Bill Wlsnlewskls plan first Pink Lady designs used Mccoy 19 Sports man power fuselage narrow balloon used tank Top speed 102 mph events contest reports especially photos CL Scale activity address very top columnLi CL Aerobatics/McMiIIan Continued page 70 farmers another technique consider As Ive mentioned previous columns thin balsa sand wiches especially centers cut out can provide excellent strength little weight Layers %2 / ply equally well ap plication installing fuselage formers try gluing / x A-in piece across fuse perpendicular former creates Ibeam strengthens piece virtually no weight increase youre planning latest effort also analyze lay out pans grain going oriented What type wood grain will use application suggest scratch-building kit pieces beforehandat least major compo nents accomplishes couple things gets thinking about best piece allows use smaller bits time efficiently Big chunks time secm just hard come wood days triangulating Some months ago column recommended triangulating everything still layout some balsa wing skins foam cov ering saw recently showed grain run ning parallel trailing edge hinge line Though saves some balsa sheet per wing halt still dont recommend Run grain parallel leading edge gives trian gulation makes wing easier sand wind up torsionally stable panel Use triangulation elevators flaps too like cover stabs single piece per sur face use quarter-grain wood achieve desired stiffness solid surfaces run grain parallel trailing edge same effect Now tricky part Balsa alive will move sand paint wet can look stress relief Cut edge sheet true up edge wont necessarily end up true Wet side piece find bows Much depends what well grain wood piece unique maxim Whatever do both sides wood holds true very last coat paint Lets say build wing bows Dont give up happens us El Diablo just finished building major bow over inch set trailing edge course IGLOWaUG DESIGNED Puts sting engine FOR LONGER HIGHER5 Get starts GloBee Unique flat-wound spiral coil element high temperature glass-to-metal seal add up faster ignition increased RPM GloBee plugs specified original engine manufacturers purchased over over again Pylon control line racers find GloBee plugs best GloBee plugs designed fit popular engines used today unavailable locally write call Twinn-K collect pricing & delivery information & FREE Catalog MAKE THE GLOBEE / INDY CONNECTION Twinn-K Inc 10296 W Washington St Indianapolis IN 46231 Telephone 317-839-6579 FAX 317-839-8928 limits heres corrected problem First mixed some ammonia water loosen chemical bonding balsa al low its shape molded After saturating bowed part ammonia-water mixture pinned wing building board tips braced opposite bow Since springback usually about 50 percent used amount about equal opposite bow must admit took few times get right persever ance paid long run technique will work raw balsa part dont try painted surfaces can use twisted fuselages pressure must ap plied opposite existing twist until part completely dryLI CL Speed/Lee Continued page 71 much noise think Ill put wheels use demonstrations air shows grass fields Talking about jets Doug Dahlke friend stunt flier Oshkosh Wisconsin sent clipping news item about some experimental jets believe flown Air Force 1 years ago airplanes powered engines built using five Dyna-Jet heads mounted front 6-in diameter tail pipe about four feet long engines pro duced about 30 pounds thrust mounted Control Line models flown 200ft lines Controls extended through swivel connections pylon flying station out side circle Speeds attained over 200 mph single-engined model speeds werent mentioned twin engine job sound like quarter-scale airplanes before RC craze took over Writing column fun could use input Speed fliers Ive stunt RC modelers call usually looking power and/or better reliability Stunt fliers want smooth steady runs RC fliers want everythingI have never claimed expert can usually get stuff run fairly well bought brand new 05 28 RC engine swap shop other day five bucks Someone tried take apart before running really messed up ring broken pieces chewed up piston sleeve chunks broken out exhaust stack prying screwdriver dont know Serious Helicopter Hot Dogging SjX-Pf PISTON/CYLINDER Superior Horsepower w/ Tuned Pipes True ABC Construction Finest Materials & Workmanship Arch Port Available OS SFN-RFN Other Types & Sizes Available Pattern Racing vi BLI ES Send $1 00 complete Catalogue Engines Accessories PERFORMANCE SPECIALTIES 729-1658 PO Box 4003 Carlsbad CA 92008 March 1991 173 Send S2OO Catalog ot iians Accessories ond uppIIes Credited First Order S25 .....UJIl]U iiei w4Ibe]uE wm Ieiu i~iiiniiIew u mum wzvuwi take engine apart dont very least ask someone does made sleeve pul icr tapping Center brass bar spanned across sleeve caught top opposite ports long bolt went up washer piece tubing sat crankcase over sleeve pulled sleeve Out easily think can save everything except ring piston Ill have adapt plate cover holes between muffler engine couple hints RC fliers Sometimes ringed engine will lose compression power first idea hits ring worn out isnt always problem since rings normally last long time have able expand move freely piston groove groove gets filled var nish hot lean runs burned fuel lubri cants ring cannot match cylinder wall proper compression fix remove piston carefully properly course dissolve clean off varnish Its var nish use varnish remover furniture strip per Dont take ring off piston just get loose clean groove soft brush Dont damage groove knives scrap ers Follow safety directions about fire toxicity careful reassembling ring pinned pinned ring has rotated properly before can compressed re-enter sleeve use gun lubricant called Sheath made Birchwood Casey after-run oil helps dissolve varnish build up pre vents rust Maybe Ill have some speed information next column CL Racing/Ballard Continued page 72 find competitors using Lil Quickie will modify round Dons tank var ious ways recess fuselage well streamline mounting tank least good basic unit can modify easily pickup tube tank usually mounted two specific ways typical mounting along outboard side tank line center bar needle valve end ap proximately half-inch rear tank usually use brass tab soldered tubing done rear cover tank off avoid tube coming loose dont way Ill file end tube form little tab bend around side tank end tank backplate soldered place locks tube position other way install tube approxi mately 14 inside tank front end again along thrust line just outside edge tank problem setup once engine started must tilt aircraft ward make sure fuel feed continues aircraft generally sits nose-up attitude causes fuel run back tank Un less plane tilted level attitude engine will run short length time before air enters line course no problem after take-off since centrifugal force keeps fuel level constant point tank Gb Bee plug evaluation November re ceived some Gb Bee prototype lL 4L plugs evaluation plugs incorporate new type ceramic glass body plug As know extremely lean runs high engine compression setups cause glass typical glow plug body melt slightly sur face embed coiled wire thus insulating wire exposure fuel mixture combustion chamber causing engine go rich happens may also cause hard start ing though battery voltage may turned up can done using Gb 1 Drill hole No 18 drill size bulkhead firewall up 3/8 thick 2 Insert shaft Bulkhead Fitting through hole 3 Screw nut onto backside fitting Bulkhead Fittings Fourmost Bulkhead Fittin s simple method feed fuel veri1 lines through solid bulkheads 4 Slip fuel vent tubes job done_________________ Bulkhead Fittings provide sealed tank compartment eliminate fuel line chafing Color coded easy identification Weight 1/2 gram Price 2 $295 No 121 FOURMOST PRODUCTS Size 3/32 4040 24th Avenue Forest Grove OR 97116 503 357-2732 174 Model Aviation Bob Fiorenze1 Hobby Center Inc UPS Orders 5hipped Daily Dealer yellow Aircraft Send $300 fo yellow Info PackageZ Visit oar showenon 35 nein oer D sney Wo NEW Cosean Boilding sern 420 West SR 43440713274383 Winter Springs FL 32708Fax 407 327 7148 DIELS ENGI [RING INC 0 PO BOX 101 WOO1JVILLE OHIO 43469 RUBBER POWERED FREE FLIGHT SCALE PLANS AND KITS NEw PEANUT SCALE KIT KIT #14 RYAN FRi FIREBALL THIS COMPLETE KIT FEATURES CANOPY DECALS PRINTWOOD ETC PRICE $1350 PLUS $250 SHIPPING 14 KITS AND 65 PLANS AVAILABLE SEVERAL MORE NE KITS FOR SPRING 1991 DELIVERY SEND $150 FOR COMPLETE CATALOG
Edition: Model Aviation - 1991/03
Page Numbers: 71, 173, 174
THIS MORNING started wondering just who began Speed madness first Control Line flier use stop watch mea sure lines calculate speed first Speed contest what club orga nized What engines used What speeds won Does anyone Out know engines ignition course did anyone experiment alcohol nitro added fuel doubt early engines could stand hot fuel imagine quite few blew up wasnt long until beefed-up engines appeared pioneers before Hornet Ball McCoy Did Speed flying start before aerobatics Before racing soon after U-control invented right now has close 50th anniversary Speed flying Ive seen write-ups about first Free Flight engine-powered flights very little about early Speed flying readers have such information please write let know Send photos too didnt start flying speed until 1949 missed ignition fun first engine McCoy 19 just before ball bearing Readheads first airplane used plywood crutch 2 x 12-in balsa wing Tornado 7-9 prop Francisco Laboratories Power Mist fuel Ill never forget nitro benzene Shinola shoe shine smell some Ohlsson Rice 30 Plus didnt dare run anything hot straight first contest speed 68 mph good enough second place Ive heard little about Nostalgia Speed have no rules other information has such information please send still have old McCoys Doolings old airplanes might fun run var nish out again eventually get tired beating heads trying keep up new tech nology better performance dream re verting times easier fun think thats main recollectionmore fun forget bad runs burned out glow plugs broken rods holes pistons ruined rings splat tered airplanes oniy remember good times good flights good friends have several fun classes such 21 Sport Sport Jet speed Foxberg rac ing Old Timer Free Flight special Quickie 500 RC Pylon Its difficult settle rules keep things simple yet competitive such events have specify restrict almost everythingairplane engine fuel prop nostalgia events fun too allow us go back build favorite alrplanes again build ones heard never time fly first time round Texas boys have having fun Sport Jet event restricted stock engines ex ternal two-line controls standard fuel consist ing 80% methanol 20% methyl ethylketone MEK finished airplane havent flown yet Its tough find flying site Continued pare 173 ne autnors all-aluminum Sport Jet left Engine stock Dyna-Jet purchased dollar community auction Restrictions un official class require stock engines external two-line controls standard fuel 80% methanol 20% methyl-ethylkeytone Charles Serie right Lebanon Indiana test running Open class jet job last years Cold Cash Speed Bash Dayton Ohio Helping him Gordon Thomas Schwenksvllle Pennsylvania Jets troublesome day didnt want run cool damp weather Bob Franklin Tom Blankman St Louis area flew inverted-engine 21 Sport Speed model second place Dayton Cold Cash Speed Bash last September pictures show bare minimum dolly used take-off drops off flight model lands brass skid bolted head Rossi 21 engine Continued page 173 March 1991 71 Conoi Line Speed Glenn Lee 8I Mandrake Batavia IL 60510 vintage model built author early fifties copied Bill Wlsnlewskls plan first Pink Lady designs used Mccoy 19 Sports man power fuselage narrow balloon used tank Top speed 102 mph events contest reports especially photos CL Scale activity address very top columnLi CL Aerobatics/McMiIIan Continued page 70 farmers another technique consider As Ive mentioned previous columns thin balsa sand wiches especially centers cut out can provide excellent strength little weight Layers %2 / ply equally well ap plication installing fuselage formers try gluing / x A-in piece across fuse perpendicular former creates Ibeam strengthens piece virtually no weight increase youre planning latest effort also analyze lay out pans grain going oriented What type wood grain will use application suggest scratch-building kit pieces beforehandat least major compo nents accomplishes couple things gets thinking about best piece allows use smaller bits time efficiently Big chunks time secm just hard come wood days triangulating Some months ago column recommended triangulating everything still layout some balsa wing skins foam cov ering saw recently showed grain run ning parallel trailing edge hinge line Though saves some balsa sheet per wing halt still dont recommend Run grain parallel leading edge gives trian gulation makes wing easier sand wind up torsionally stable panel Use triangulation elevators flaps too like cover stabs single piece per sur face use quarter-grain wood achieve desired stiffness solid surfaces run grain parallel trailing edge same effect Now tricky part Balsa alive will move sand paint wet can look stress relief Cut edge sheet true up edge wont necessarily end up true Wet side piece find bows Much depends what well grain wood piece unique maxim Whatever do both sides wood holds true very last coat paint Lets say build wing bows Dont give up happens us El Diablo just finished building major bow over inch set trailing edge course IGLOWaUG DESIGNED Puts sting engine FOR LONGER HIGHER5 Get starts GloBee Unique flat-wound spiral coil element high temperature glass-to-metal seal add up faster ignition increased RPM GloBee plugs specified original engine manufacturers purchased over over again Pylon control line racers find GloBee plugs best GloBee plugs designed fit popular engines used today unavailable locally write call Twinn-K collect pricing & delivery information & FREE Catalog MAKE THE GLOBEE / INDY CONNECTION Twinn-K Inc 10296 W Washington St Indianapolis IN 46231 Telephone 317-839-6579 FAX 317-839-8928 limits heres corrected problem First mixed some ammonia water loosen chemical bonding balsa al low its shape molded After saturating bowed part ammonia-water mixture pinned wing building board tips braced opposite bow Since springback usually about 50 percent used amount about equal opposite bow must admit took few times get right persever ance paid long run technique will work raw balsa part dont try painted surfaces can use twisted fuselages pressure must ap plied opposite existing twist until part completely dryLI CL Speed/Lee Continued page 71 much noise think Ill put wheels use demonstrations air shows grass fields Talking about jets Doug Dahlke friend stunt flier Oshkosh Wisconsin sent clipping news item about some experimental jets believe flown Air Force 1 years ago airplanes powered engines built using five Dyna-Jet heads mounted front 6-in diameter tail pipe about four feet long engines pro duced about 30 pounds thrust mounted Control Line models flown 200ft lines Controls extended through swivel connections pylon flying station out side circle Speeds attained over 200 mph single-engined model speeds werent mentioned twin engine job sound like quarter-scale airplanes before RC craze took over Writing column fun could use input Speed fliers Ive stunt RC modelers call usually looking power and/or better reliability Stunt fliers want smooth steady runs RC fliers want everythingI have never claimed expert can usually get stuff run fairly well bought brand new 05 28 RC engine swap shop other day five bucks Someone tried take apart before running really messed up ring broken pieces chewed up piston sleeve chunks broken out exhaust stack prying screwdriver dont know Serious Helicopter Hot Dogging SjX-Pf PISTON/CYLINDER Superior Horsepower w/ Tuned Pipes True ABC Construction Finest Materials & Workmanship Arch Port Available OS SFN-RFN Other Types & Sizes Available Pattern Racing vi BLI ES Send $1 00 complete Catalogue Engines Accessories PERFORMANCE SPECIALTIES 729-1658 PO Box 4003 Carlsbad CA 92008 March 1991 173 Send S2OO Catalog ot iians Accessories ond uppIIes Credited First Order S25 .....UJIl]U iiei w4Ibe]uE wm Ieiu i~iiiniiIew u mum wzvuwi take engine apart dont very least ask someone does made sleeve pul icr tapping Center brass bar spanned across sleeve caught top opposite ports long bolt went up washer piece tubing sat crankcase over sleeve pulled sleeve Out easily think can save everything except ring piston Ill have adapt plate cover holes between muffler engine couple hints RC fliers Sometimes ringed engine will lose compression power first idea hits ring worn out isnt always problem since rings normally last long time have able expand move freely piston groove groove gets filled var nish hot lean runs burned fuel lubri cants ring cannot match cylinder wall proper compression fix remove piston carefully properly course dissolve clean off varnish Its var nish use varnish remover furniture strip per Dont take ring off piston just get loose clean groove soft brush Dont damage groove knives scrap ers Follow safety directions about fire toxicity careful reassembling ring pinned pinned ring has rotated properly before can compressed re-enter sleeve use gun lubricant called Sheath made Birchwood Casey after-run oil helps dissolve varnish build up pre vents rust Maybe Ill have some speed information next column CL Racing/Ballard Continued page 72 find competitors using Lil Quickie will modify round Dons tank var ious ways recess fuselage well streamline mounting tank least good basic unit can modify easily pickup tube tank usually mounted two specific ways typical mounting along outboard side tank line center bar needle valve end ap proximately half-inch rear tank usually use brass tab soldered tubing done rear cover tank off avoid tube coming loose dont way Ill file end tube form little tab bend around side tank end tank backplate soldered place locks tube position other way install tube approxi mately 14 inside tank front end again along thrust line just outside edge tank problem setup once engine started must tilt aircraft ward make sure fuel feed continues aircraft generally sits nose-up attitude causes fuel run back tank Un less plane tilted level attitude engine will run short length time before air enters line course no problem after take-off since centrifugal force keeps fuel level constant point tank Gb Bee plug evaluation November re ceived some Gb Bee prototype lL 4L plugs evaluation plugs incorporate new type ceramic glass body plug As know extremely lean runs high engine compression setups cause glass typical glow plug body melt slightly sur face embed coiled wire thus insulating wire exposure fuel mixture combustion chamber causing engine go rich happens may also cause hard start ing though battery voltage may turned up can done using Gb 1 Drill hole No 18 drill size bulkhead firewall up 3/8 thick 2 Insert shaft Bulkhead Fitting through hole 3 Screw nut onto backside fitting Bulkhead Fittings Fourmost Bulkhead Fittin s simple method feed fuel veri1 lines through solid bulkheads 4 Slip fuel vent tubes job done_________________ Bulkhead Fittings provide sealed tank compartment eliminate fuel line chafing Color coded easy identification Weight 1/2 gram Price 2 $295 No 121 FOURMOST PRODUCTS Size 3/32 4040 24th Avenue Forest Grove OR 97116 503 357-2732 174 Model Aviation Bob Fiorenze1 Hobby Center Inc UPS Orders 5hipped Daily Dealer yellow Aircraft Send $300 fo yellow Info PackageZ Visit oar showenon 35 nein oer D sney Wo NEW Cosean Boilding sern 420 West SR 43440713274383 Winter Springs FL 32708Fax 407 327 7148 DIELS ENGI [RING INC 0 PO BOX 101 WOO1JVILLE OHIO 43469 RUBBER POWERED FREE FLIGHT SCALE PLANS AND KITS NEw PEANUT SCALE KIT KIT #14 RYAN FRi FIREBALL THIS COMPLETE KIT FEATURES CANOPY DECALS PRINTWOOD ETC PRICE $1350 PLUS $250 SHIPPING 14 KITS AND 65 PLANS AVAILABLE SEVERAL MORE NE KITS FOR SPRING 1991 DELIVERY SEND $150 FOR COMPLETE CATALOG