Control Line Speed Gene Hempel cSeTomUpton YOU ARE local speed contest Sam Stopwatch turns 19999 mph Z speed questions start flying What engine Rev-Up Top Flite prop much nitro suction bladder tank What timing 1950 exhaust 1060 intake think fooling discus sion always gets timing because secret people can understand going discuss tools how-to timing plus give secret rules-ofthumb will fit engines revolution crankshaft covers 3600 timing numbers simply locate exhaust intake ports open crankshaft degrees remain open production engines ex cept Foxes have symmetrical cylinder timing exhaust opens 800 before Bottom Dead Center BCDit will close 800 after BDCgiving total port dura tion 800 1600 Foxes De saxe designs cylinder bore offset side crankshaft centerline ports will open close dif ferent crankshaft degrees Timing engine requires 3600 pro tractor fixed reference point attached either engine timing stand flashlight depth micrometer determine exhaust intake timing stall protractor shaft use flashlight dark room depth micrometer set port height find port opens example 2320 rotate engine until closes again example 720 difference two duration port opening Example 2320 1600 duration dividing duration two gives opening closing location 1620/2 before after B DC rotor crankshaft inlet timing little involved because TDC must located before anything else can done depth micrometer dial indicator touching piston crown turn engine direction other until find TDC proCon tinued page 96 June 1978 47 Carl Schaefers unique assymetrical Formula 40 placed 4th 77 Nats time 15345 Havent heard pros cons stubby outboard wing panel Photograph Frank Garzon Looking like cat swallowed canary Denny Ytuarte shows Junior Formula 40 job photog Frank Garzon impressed Hempel Upton timing stand showing procedure finding TDC depth micrometer sheet-metal screw pan-head screw will fit tightly engine bearer will probably work loose eventually could get through day Blind mounting nuts can replaced going through top fuselage its case refinishing area cut out al though nice STP decal over spot can help new trim stripe can ap plied Stress cracks around wing stab ilizer dont label Stress Cracks did Dave Gierke Letra set Specials late 60s its time microballoons choice resin quick-setting glues Use Dremel tool gouge out concave holelike favorite dentist does gouge really big lay piece balsa rut build up around microballoons stabilizer rear fuselage repairs Hot Stuff-type adhe sives best because light weight Remel Cooper told stress crack broken prop went right across bottom block Using extra long 3/32 drills drilled about five holes bottom block cowl opening parallel thrust line holes went back block about 4 5 inches used 3/32 dowels about 5 inches long sharpened pencil sharpener epoxy plug up holes strengthen bottom block wing have several fliers have successfully replaced entire bellcrank leadouts going through bot tom built-up wing pulling new leadouts through wing tip taping old ones after cutting off leadout loops new leadouts Bill Werwage put two new leadouts 75 Nationals thought old ones frayed As suggested above went through bottom I-beam wing airplane USA-I Broken wing panels crushed wing tips car door creases wingsall can rebuilt Kitchen contact paper can used covering very sticky can applied after wiping off surfaces alcohol Contact paper little heavy can used emergencies Other plastic coverings can used quite successfully repairs covering up holes surface Did know 1976 World Champion stunt plane Mono kote patch over wing-tip weight box Popsicle sticks good sturdy repair pieces Dings dents can also dis guised trim lines trim tape What have lost hinge flaps elevators old ones wont come completely out install new right next old hinge Drill couple holes plastic hinge allow epoxy have wood-to-wood contact allows epoxy act pin after hinge pin toothpick way through panels can refinished covered up plastic coat ing leave alone Tom Dixon style hinge repairs Paper clip wire can used pin hinges have come loose As last resort familiar figure-8 combat-type hinge can sewn using Dacron flying lines say built tank has started leak vent tubes loose tank has come out Go through bottom fuselage carefully break tank loose mounting kitchen knife heated red hot can used help loosen tank its tight-fitting mount pushrod came loose broke still have plane left will have slice off top fuselage two places have place work Most time pushrod breaks plane air theres much left plane work Ted Fancher vaguely remembers dilemma information stunt PAMPA contact Wynn Paul 1640 Maywick Drive Lex Ky 40504 CL Navy Carrier/Perry continued page 46 class Carrier ships new bellcranks compact still provide strength smoothness throttle arm movement characteristic original G-S bellcranks G-S control units best available opinion includes home-built units have seen Carrier fliers fortunate models usually last long time Ive flown same models five six seasons can mixed blessing however since control system usually con cealed cannot inspected damage single components susceptible ravages time leadouts Cor rosion wear primary problems Solid cable leadouts both popu lar Solid leadouts withstand corrosion wear better can keep straight prefer cable leadouts wont argue against either type want mention some procedures could re duce potential problems Solid leadouts can soldered fairly well Cable leadouts little different small-diameter wire prone damage overheating excess flux can carried inside cable quite distance solder joint prop erly neutralized baking soda solution good flux can cause corrosion rec ommend wire-wound line terminations shown rule book cable leadouts avoid potential problems solder ing cable Epoxy can used coat lightly wire bindings prevent coming loose Leadouts should always larger diam eter wire required control lines avoid excessive weakening due wear bellcrank wear greatest leadouts can placed inside small-diameter brass tubing proper precautions combat wear corrosion control system can re main safe functional life model Richard L Perry 5016 Angelita Ave. Dayton OH 45424 CL Speed/Hempel/Upton continued page 47 tractor example 170 Use flashlight tell rotor crank port closes example 720 opens example 2320 Now take closing 720 subtract 1800 170 inlet timing open 350 after BDC closed 550 after TDC total dura tion 1800 1450 2000 Now have thoroughly confused secret timing numbers Piped engines1680 — 1720 exhaust 1280 1320 intake rotor open 450 ABDC close 650 ATDC Minipiped engines1600 1660 exhaust 1240 1280 intake rotor open 350 ABDC close 550 ATDC general rules-of-thumb give good re sults necessarily ultimate have run piped 29s 1760 exhaust 1340 intake good re sults become very sensitive have getting lots mail telling 96 Model Aviation 4 NEY KITS OF WORLD CLASSIC AIRCRAFT FROM FLYLINE 3033 100 03pO, 0030 po0,d 300313000050 LUTON Minor 00034 300 o3wP .&I 00 jod 000030 00030000 0 035 30, 003 .oooipfofloog 30020 oooO 0I00 00 300, 0000- big 300 00000 03051 000 00000 Send 25t catalog See yotirdeoler oil FLYLINEs classic kits NOW INE MODELS INC 2320 00, 0030 Ut 3 023 HEINKEL 1000 OOON*CO00 *050 0000 701 0 0000030 03005 00 030 1000030 030 S7OF about contests new products will publish some column like name print write us Fred RandellMA Enterprises 659 Colony Rd Box 7305 Canal Fulton OH 44614 216/854-4233is producing ink-sack pen bladders again Price $1800 per hundred plus postage Nick ArpinoDarp Speed Pans 301 Woodacres Rd East Patchogue NY 11772 516/286-8144is adding 21long Formula-40 pan already fine line A-FAI 15 long B-C 18 long D 20 long Brassels Speed Equipment 1215 N Concord Rd Chattanooga TN 37421 615/892-5995Harters speed pans mono-line wire handles Bill Pardue described recent Golden Trial Model Masters Fall Contest Winston-Salem NC October 22 seems Quay Barbers Lil Shaver profile proto Put Mike Langlois record/ratio speed event Actually profile model flown mono-line enclosed proto class new Junior record interesting note Quay Bar zers /2A profile mono-line outran both Bagwells Langlois pure speed models 3-port mini-pipe Cox engines Barber running nearly stock TD final results record/ratio speed event looked like GRISH AIRCRAFT TYPE PROPELLERS Made hardwood fully carved true helical pitch airfoil ready sanding ALL SIZES IN18$700 6 8 & 10 PITCH20800 221000 241300 AT YOUR DEALER USE TO PROPEL AIR ALL GRISH PROPELLERS ARE ENGINEERED TO TRUE 1-IELICAL 2 Blade Tractor 5-3each 5-45/-3 6-3 7-47-6 8-48-6 9-49-6 9-810-4 11-411-6 12-412-5 5%-4 6-4 7-8 8-8 9-7 10-6 11-8 12-6 304 354 SOd 654 854 $1 $150 CREATE THRUST AND BE PROPELLED BY AIR DISCRETION OF 2 Blade Pusher 5A-4 6-36-4 35d 8-685d 9-610-6$1 BLADE 3 BladeTractorx 5-3 6-36-4SOd 3 BladePusher 6-3SodMetallic Aluminum Color Made polyester boll color7-67-8$1 8-68-8 $125 9-6 10-6 10-4 $150 Jr Proto Open Jet Speed Jr Profile Proto Jr 1/2ASpeed Sr Y2A Speed Op A Speed slightly raised Bee A-insert-type same type plug Nick used recently set new Open speed record 121 mph recent Day ton Ohio meet Al Stegins reported have run 117-119 #2 engine open face exhaust Gb Bee plug really honking proto #1 engine until ground jumped up grab should noted three official flights Langlois jet lap glide included clocking 6-op non-pressure tank Mike getting 9 laps under power launch getting pylon after ship still ground some flights 211 210 50% propylene oxide 50% nitro-methane Nit rotane about ten flights flown same set valves stub backup valves same diameter retainer Retainer turned back 050 stock 50/50 fuel fed pressure tank coming through metering jet drilled #42 drill size Bill also advises careful what9752 mph 21118mph 9406 mph 10634 mph 10461 mph 10621 mph 1043 1%9406 Backup 10269%21020 Backup 10146% 984 1% 9418% 88 00% ever tubing using watch out pin holes Bill Pardue indicated doing series jet articles Da Gaz have read some Bills jet scoop Gaz Encourage jet speed fliers sub scribe Da Gaz Its $500 per year Doc Jackson 523 Meadowbrook Circle St Davids PA 19087 Between Doc Bill folks should getting inter ested speed flying again I-lope indicator speed upswing Received call T Wright Jacksonville Florida about King Orange meet December 30 31 1977 January 1 1978 weather fair rained little enough really stop things Participation ex cellent Free Flight Stunt Combat Goodyear Rat Entries Speed Carrier low AT set new D speed record under 78-79 rules 197 mph mini-pipe Also Bob Day AT joined forces set Profile Proto record 92 mph Would like find out Mike Hoyt still handling jet pipes heads Have able contact him nt forget United States Control Line Model Airplane Championships Winston-Salem NC June 17-18 body thats anybody gonna Contact Bill Pardue 1201 Surry Drive Greensboro NC 27408 next column will cover tach props what RPM ranges look Gene Hem pel Tom Upton 301 N Yale Dr Garland TX 75042 Spitfire/Greene continued page 43 bend shape -sq lead ing edges dry glue place Glue WT-6 top two wing tip semblies WT-4 WT-5 wing tip shown Let dry Hardware Hookup Connect lead-out wires bellcrank slip wires through ribs Use 3/32 aluminum tubing inboard wing tip protect wing tip assembly Glue tubing place epoxy Bend 3/32 pushrod wire shown Sol der bellcrank using washer top bottom install bellcrank Sol der nut bellcrank make certain wont come apart flight Landing Gear Cut piece 1/8 ID brass tubing shown wing section fuselage plan landing gear slip June 1978 97 fio7rnd&i PROPELLERS PITCH AND AIRFOIL FOR EFFICIENCY AT YOUR DEALER RIGHT HAND ROTATION 3/B BORE THE PURCHASER Pusher 10-6$150 G RUSH ST JOHN INDIANA 46373 1st Quay Barber 2nd Mike Langlois 3rd Quay Barber 4th Quay Barber 5th Phil Bagwell 6th Mike Langlois bypass flute very using new Gb Gb plug the
Edition: Model Aviation - 1978/06
Page Numbers: 47, 96, 97
Control Line Speed Gene Hempel cSeTomUpton YOU ARE local speed contest Sam Stopwatch turns 19999 mph Z speed questions start flying What engine Rev-Up Top Flite prop much nitro suction bladder tank What timing 1950 exhaust 1060 intake think fooling discus sion always gets timing because secret people can understand going discuss tools how-to timing plus give secret rules-ofthumb will fit engines revolution crankshaft covers 3600 timing numbers simply locate exhaust intake ports open crankshaft degrees remain open production engines ex cept Foxes have symmetrical cylinder timing exhaust opens 800 before Bottom Dead Center BCDit will close 800 after BDCgiving total port dura tion 800 1600 Foxes De saxe designs cylinder bore offset side crankshaft centerline ports will open close dif ferent crankshaft degrees Timing engine requires 3600 pro tractor fixed reference point attached either engine timing stand flashlight depth micrometer determine exhaust intake timing stall protractor shaft use flashlight dark room depth micrometer set port height find port opens example 2320 rotate engine until closes again example 720 difference two duration port opening Example 2320 1600 duration dividing duration two gives opening closing location 1620/2 before after B DC rotor crankshaft inlet timing little involved because TDC must located before anything else can done depth micrometer dial indicator touching piston crown turn engine direction other until find TDC proCon tinued page 96 June 1978 47 Carl Schaefers unique assymetrical Formula 40 placed 4th 77 Nats time 15345 Havent heard pros cons stubby outboard wing panel Photograph Frank Garzon Looking like cat swallowed canary Denny Ytuarte shows Junior Formula 40 job photog Frank Garzon impressed Hempel Upton timing stand showing procedure finding TDC depth micrometer sheet-metal screw pan-head screw will fit tightly engine bearer will probably work loose eventually could get through day Blind mounting nuts can replaced going through top fuselage its case refinishing area cut out al though nice STP decal over spot can help new trim stripe can ap plied Stress cracks around wing stab ilizer dont label Stress Cracks did Dave Gierke Letra set Specials late 60s its time microballoons choice resin quick-setting glues Use Dremel tool gouge out concave holelike favorite dentist does gouge really big lay piece balsa rut build up around microballoons stabilizer rear fuselage repairs Hot Stuff-type adhe sives best because light weight Remel Cooper told stress crack broken prop went right across bottom block Using extra long 3/32 drills drilled about five holes bottom block cowl opening parallel thrust line holes went back block about 4 5 inches used 3/32 dowels about 5 inches long sharpened pencil sharpener epoxy plug up holes strengthen bottom block wing have several fliers have successfully replaced entire bellcrank leadouts going through bot tom built-up wing pulling new leadouts through wing tip taping old ones after cutting off leadout loops new leadouts Bill Werwage put two new leadouts 75 Nationals thought old ones frayed As suggested above went through bottom I-beam wing airplane USA-I Broken wing panels crushed wing tips car door creases wingsall can rebuilt Kitchen contact paper can used covering very sticky can applied after wiping off surfaces alcohol Contact paper little heavy can used emergencies Other plastic coverings can used quite successfully repairs covering up holes surface Did know 1976 World Champion stunt plane Mono kote patch over wing-tip weight box Popsicle sticks good sturdy repair pieces Dings dents can also dis guised trim lines trim tape What have lost hinge flaps elevators old ones wont come completely out install new right next old hinge Drill couple holes plastic hinge allow epoxy have wood-to-wood contact allows epoxy act pin after hinge pin toothpick way through panels can refinished covered up plastic coat ing leave alone Tom Dixon style hinge repairs Paper clip wire can used pin hinges have come loose As last resort familiar figure-8 combat-type hinge can sewn using Dacron flying lines say built tank has started leak vent tubes loose tank has come out Go through bottom fuselage carefully break tank loose mounting kitchen knife heated red hot can used help loosen tank its tight-fitting mount pushrod came loose broke still have plane left will have slice off top fuselage two places have place work Most time pushrod breaks plane air theres much left plane work Ted Fancher vaguely remembers dilemma information stunt PAMPA contact Wynn Paul 1640 Maywick Drive Lex Ky 40504 CL Navy Carrier/Perry continued page 46 class Carrier ships new bellcranks compact still provide strength smoothness throttle arm movement characteristic original G-S bellcranks G-S control units best available opinion includes home-built units have seen Carrier fliers fortunate models usually last long time Ive flown same models five six seasons can mixed blessing however since control system usually con cealed cannot inspected damage single components susceptible ravages time leadouts Cor rosion wear primary problems Solid cable leadouts both popu lar Solid leadouts withstand corrosion wear better can keep straight prefer cable leadouts wont argue against either type want mention some procedures could re duce potential problems Solid leadouts can soldered fairly well Cable leadouts little different small-diameter wire prone damage overheating excess flux can carried inside cable quite distance solder joint prop erly neutralized baking soda solution good flux can cause corrosion rec ommend wire-wound line terminations shown rule book cable leadouts avoid potential problems solder ing cable Epoxy can used coat lightly wire bindings prevent coming loose Leadouts should always larger diam eter wire required control lines avoid excessive weakening due wear bellcrank wear greatest leadouts can placed inside small-diameter brass tubing proper precautions combat wear corrosion control system can re main safe functional life model Richard L Perry 5016 Angelita Ave. Dayton OH 45424 CL Speed/Hempel/Upton continued page 47 tractor example 170 Use flashlight tell rotor crank port closes example 720 opens example 2320 Now take closing 720 subtract 1800 170 inlet timing open 350 after BDC closed 550 after TDC total dura tion 1800 1450 2000 Now have thoroughly confused secret timing numbers Piped engines1680 — 1720 exhaust 1280 1320 intake rotor open 450 ABDC close 650 ATDC Minipiped engines1600 1660 exhaust 1240 1280 intake rotor open 350 ABDC close 550 ATDC general rules-of-thumb give good re sults necessarily ultimate have run piped 29s 1760 exhaust 1340 intake good re sults become very sensitive have getting lots mail telling 96 Model Aviation 4 NEY KITS OF WORLD CLASSIC AIRCRAFT FROM FLYLINE 3033 100 03pO, 0030 po0,d 300313000050 LUTON Minor 00034 300 o3wP .&I 00 jod 000030 00030000 0 035 30, 003 .oooipfofloog 30020 oooO 0I00 00 300, 0000- big 300 00000 03051 000 00000 Send 25t catalog See yotirdeoler oil FLYLINEs classic kits NOW INE MODELS INC 2320 00, 0030 Ut 3 023 HEINKEL 1000 OOON*CO00 *050 0000 701 0 0000030 03005 00 030 1000030 030 S7OF about contests new products will publish some column like name print write us Fred RandellMA Enterprises 659 Colony Rd Box 7305 Canal Fulton OH 44614 216/854-4233is producing ink-sack pen bladders again Price $1800 per hundred plus postage Nick ArpinoDarp Speed Pans 301 Woodacres Rd East Patchogue NY 11772 516/286-8144is adding 21long Formula-40 pan already fine line A-FAI 15 long B-C 18 long D 20 long Brassels Speed Equipment 1215 N Concord Rd Chattanooga TN 37421 615/892-5995Harters speed pans mono-line wire handles Bill Pardue described recent Golden Trial Model Masters Fall Contest Winston-Salem NC October 22 seems Quay Barbers Lil Shaver profile proto Put Mike Langlois record/ratio speed event Actually profile model flown mono-line enclosed proto class new Junior record interesting note Quay Bar zers /2A profile mono-line outran both Bagwells Langlois pure speed models 3-port mini-pipe Cox engines Barber running nearly stock TD final results record/ratio speed event looked like GRISH AIRCRAFT TYPE PROPELLERS Made hardwood fully carved true helical pitch airfoil ready sanding ALL SIZES IN18$700 6 8 & 10 PITCH20800 221000 241300 AT YOUR DEALER USE TO PROPEL AIR ALL GRISH PROPELLERS ARE ENGINEERED TO TRUE 1-IELICAL 2 Blade Tractor 5-3each 5-45/-3 6-3 7-47-6 8-48-6 9-49-6 9-810-4 11-411-6 12-412-5 5%-4 6-4 7-8 8-8 9-7 10-6 11-8 12-6 304 354 SOd 654 854 $1 $150 CREATE THRUST AND BE PROPELLED BY AIR DISCRETION OF 2 Blade Pusher 5A-4 6-36-4 35d 8-685d 9-610-6$1 BLADE 3 BladeTractorx 5-3 6-36-4SOd 3 BladePusher 6-3SodMetallic Aluminum Color Made polyester boll color7-67-8$1 8-68-8 $125 9-6 10-6 10-4 $150 Jr Proto Open Jet Speed Jr Profile Proto Jr 1/2ASpeed Sr Y2A Speed Op A Speed slightly raised Bee A-insert-type same type plug Nick used recently set new Open speed record 121 mph recent Day ton Ohio meet Al Stegins reported have run 117-119 #2 engine open face exhaust Gb Bee plug really honking proto #1 engine until ground jumped up grab should noted three official flights Langlois jet lap glide included clocking 6-op non-pressure tank Mike getting 9 laps under power launch getting pylon after ship still ground some flights 211 210 50% propylene oxide 50% nitro-methane Nit rotane about ten flights flown same set valves stub backup valves same diameter retainer Retainer turned back 050 stock 50/50 fuel fed pressure tank coming through metering jet drilled #42 drill size Bill also advises careful what9752 mph 21118mph 9406 mph 10634 mph 10461 mph 10621 mph 1043 1%9406 Backup 10269%21020 Backup 10146% 984 1% 9418% 88 00% ever tubing using watch out pin holes Bill Pardue indicated doing series jet articles Da Gaz have read some Bills jet scoop Gaz Encourage jet speed fliers sub scribe Da Gaz Its $500 per year Doc Jackson 523 Meadowbrook Circle St Davids PA 19087 Between Doc Bill folks should getting inter ested speed flying again I-lope indicator speed upswing Received call T Wright Jacksonville Florida about King Orange meet December 30 31 1977 January 1 1978 weather fair rained little enough really stop things Participation ex cellent Free Flight Stunt Combat Goodyear Rat Entries Speed Carrier low AT set new D speed record under 78-79 rules 197 mph mini-pipe Also Bob Day AT joined forces set Profile Proto record 92 mph Would like find out Mike Hoyt still handling jet pipes heads Have able contact him nt forget United States Control Line Model Airplane Championships Winston-Salem NC June 17-18 body thats anybody gonna Contact Bill Pardue 1201 Surry Drive Greensboro NC 27408 next column will cover tach props what RPM ranges look Gene Hem pel Tom Upton 301 N Yale Dr Garland TX 75042 Spitfire/Greene continued page 43 bend shape -sq lead ing edges dry glue place Glue WT-6 top two wing tip semblies WT-4 WT-5 wing tip shown Let dry Hardware Hookup Connect lead-out wires bellcrank slip wires through ribs Use 3/32 aluminum tubing inboard wing tip protect wing tip assembly Glue tubing place epoxy Bend 3/32 pushrod wire shown Sol der bellcrank using washer top bottom install bellcrank Sol der nut bellcrank make certain wont come apart flight Landing Gear Cut piece 1/8 ID brass tubing shown wing section fuselage plan landing gear slip June 1978 97 fio7rnd&i PROPELLERS PITCH AND AIRFOIL FOR EFFICIENCY AT YOUR DEALER RIGHT HAND ROTATION 3/B BORE THE PURCHASER Pusher 10-6$150 G RUSH ST JOHN INDIANA 46373 1st Quay Barber 2nd Mike Langlois 3rd Quay Barber 4th Quay Barber 5th Phil Bagwell 6th Mike Langlois bypass flute very using new Gb Gb plug the
Edition: Model Aviation - 1978/06
Page Numbers: 47, 96, 97
Control Line Speed Gene Hempel cSeTomUpton YOU ARE local speed contest Sam Stopwatch turns 19999 mph Z speed questions start flying What engine Rev-Up Top Flite prop much nitro suction bladder tank What timing 1950 exhaust 1060 intake think fooling discus sion always gets timing because secret people can understand going discuss tools how-to timing plus give secret rules-ofthumb will fit engines revolution crankshaft covers 3600 timing numbers simply locate exhaust intake ports open crankshaft degrees remain open production engines ex cept Foxes have symmetrical cylinder timing exhaust opens 800 before Bottom Dead Center BCDit will close 800 after BDCgiving total port dura tion 800 1600 Foxes De saxe designs cylinder bore offset side crankshaft centerline ports will open close dif ferent crankshaft degrees Timing engine requires 3600 pro tractor fixed reference point attached either engine timing stand flashlight depth micrometer determine exhaust intake timing stall protractor shaft use flashlight dark room depth micrometer set port height find port opens example 2320 rotate engine until closes again example 720 difference two duration port opening Example 2320 1600 duration dividing duration two gives opening closing location 1620/2 before after B DC rotor crankshaft inlet timing little involved because TDC must located before anything else can done depth micrometer dial indicator touching piston crown turn engine direction other until find TDC proCon tinued page 96 June 1978 47 Carl Schaefers unique assymetrical Formula 40 placed 4th 77 Nats time 15345 Havent heard pros cons stubby outboard wing panel Photograph Frank Garzon Looking like cat swallowed canary Denny Ytuarte shows Junior Formula 40 job photog Frank Garzon impressed Hempel Upton timing stand showing procedure finding TDC depth micrometer sheet-metal screw pan-head screw will fit tightly engine bearer will probably work loose eventually could get through day Blind mounting nuts can replaced going through top fuselage its case refinishing area cut out al though nice STP decal over spot can help new trim stripe can ap plied Stress cracks around wing stab ilizer dont label Stress Cracks did Dave Gierke Letra set Specials late 60s its time microballoons choice resin quick-setting glues Use Dremel tool gouge out concave holelike favorite dentist does gouge really big lay piece balsa rut build up around microballoons stabilizer rear fuselage repairs Hot Stuff-type adhe sives best because light weight Remel Cooper told stress crack broken prop went right across bottom block Using extra long 3/32 drills drilled about five holes bottom block cowl opening parallel thrust line holes went back block about 4 5 inches used 3/32 dowels about 5 inches long sharpened pencil sharpener epoxy plug up holes strengthen bottom block wing have several fliers have successfully replaced entire bellcrank leadouts going through bot tom built-up wing pulling new leadouts through wing tip taping old ones after cutting off leadout loops new leadouts Bill Werwage put two new leadouts 75 Nationals thought old ones frayed As suggested above went through bottom I-beam wing airplane USA-I Broken wing panels crushed wing tips car door creases wingsall can rebuilt Kitchen contact paper can used covering very sticky can applied after wiping off surfaces alcohol Contact paper little heavy can used emergencies Other plastic coverings can used quite successfully repairs covering up holes surface Did know 1976 World Champion stunt plane Mono kote patch over wing-tip weight box Popsicle sticks good sturdy repair pieces Dings dents can also dis guised trim lines trim tape What have lost hinge flaps elevators old ones wont come completely out install new right next old hinge Drill couple holes plastic hinge allow epoxy have wood-to-wood contact allows epoxy act pin after hinge pin toothpick way through panels can refinished covered up plastic coat ing leave alone Tom Dixon style hinge repairs Paper clip wire can used pin hinges have come loose As last resort familiar figure-8 combat-type hinge can sewn using Dacron flying lines say built tank has started leak vent tubes loose tank has come out Go through bottom fuselage carefully break tank loose mounting kitchen knife heated red hot can used help loosen tank its tight-fitting mount pushrod came loose broke still have plane left will have slice off top fuselage two places have place work Most time pushrod breaks plane air theres much left plane work Ted Fancher vaguely remembers dilemma information stunt PAMPA contact Wynn Paul 1640 Maywick Drive Lex Ky 40504 CL Navy Carrier/Perry continued page 46 class Carrier ships new bellcranks compact still provide strength smoothness throttle arm movement characteristic original G-S bellcranks G-S control units best available opinion includes home-built units have seen Carrier fliers fortunate models usually last long time Ive flown same models five six seasons can mixed blessing however since control system usually con cealed cannot inspected damage single components susceptible ravages time leadouts Cor rosion wear primary problems Solid cable leadouts both popu lar Solid leadouts withstand corrosion wear better can keep straight prefer cable leadouts wont argue against either type want mention some procedures could re duce potential problems Solid leadouts can soldered fairly well Cable leadouts little different small-diameter wire prone damage overheating excess flux can carried inside cable quite distance solder joint prop erly neutralized baking soda solution good flux can cause corrosion rec ommend wire-wound line terminations shown rule book cable leadouts avoid potential problems solder ing cable Epoxy can used coat lightly wire bindings prevent coming loose Leadouts should always larger diam eter wire required control lines avoid excessive weakening due wear bellcrank wear greatest leadouts can placed inside small-diameter brass tubing proper precautions combat wear corrosion control system can re main safe functional life model Richard L Perry 5016 Angelita Ave. Dayton OH 45424 CL Speed/Hempel/Upton continued page 47 tractor example 170 Use flashlight tell rotor crank port closes example 720 opens example 2320 Now take closing 720 subtract 1800 170 inlet timing open 350 after BDC closed 550 after TDC total dura tion 1800 1450 2000 Now have thoroughly confused secret timing numbers Piped engines1680 — 1720 exhaust 1280 1320 intake rotor open 450 ABDC close 650 ATDC Minipiped engines1600 1660 exhaust 1240 1280 intake rotor open 350 ABDC close 550 ATDC general rules-of-thumb give good re sults necessarily ultimate have run piped 29s 1760 exhaust 1340 intake good re sults become very sensitive have getting lots mail telling 96 Model Aviation 4 NEY KITS OF WORLD CLASSIC AIRCRAFT FROM FLYLINE 3033 100 03pO, 0030 po0,d 300313000050 LUTON Minor 00034 300 o3wP .&I 00 jod 000030 00030000 0 035 30, 003 .oooipfofloog 30020 oooO 0I00 00 300, 0000- big 300 00000 03051 000 00000 Send 25t catalog See yotirdeoler oil FLYLINEs classic kits NOW INE MODELS INC 2320 00, 0030 Ut 3 023 HEINKEL 1000 OOON*CO00 *050 0000 701 0 0000030 03005 00 030 1000030 030 S7OF about contests new products will publish some column like name print write us Fred RandellMA Enterprises 659 Colony Rd Box 7305 Canal Fulton OH 44614 216/854-4233is producing ink-sack pen bladders again Price $1800 per hundred plus postage Nick ArpinoDarp Speed Pans 301 Woodacres Rd East Patchogue NY 11772 516/286-8144is adding 21long Formula-40 pan already fine line A-FAI 15 long B-C 18 long D 20 long Brassels Speed Equipment 1215 N Concord Rd Chattanooga TN 37421 615/892-5995Harters speed pans mono-line wire handles Bill Pardue described recent Golden Trial Model Masters Fall Contest Winston-Salem NC October 22 seems Quay Barbers Lil Shaver profile proto Put Mike Langlois record/ratio speed event Actually profile model flown mono-line enclosed proto class new Junior record interesting note Quay Bar zers /2A profile mono-line outran both Bagwells Langlois pure speed models 3-port mini-pipe Cox engines Barber running nearly stock TD final results record/ratio speed event looked like GRISH AIRCRAFT TYPE PROPELLERS Made hardwood fully carved true helical pitch airfoil ready sanding ALL SIZES IN18$700 6 8 & 10 PITCH20800 221000 241300 AT YOUR DEALER USE TO PROPEL AIR ALL GRISH PROPELLERS ARE ENGINEERED TO TRUE 1-IELICAL 2 Blade Tractor 5-3each 5-45/-3 6-3 7-47-6 8-48-6 9-49-6 9-810-4 11-411-6 12-412-5 5%-4 6-4 7-8 8-8 9-7 10-6 11-8 12-6 304 354 SOd 654 854 $1 $150 CREATE THRUST AND BE PROPELLED BY AIR DISCRETION OF 2 Blade Pusher 5A-4 6-36-4 35d 8-685d 9-610-6$1 BLADE 3 BladeTractorx 5-3 6-36-4SOd 3 BladePusher 6-3SodMetallic Aluminum Color Made polyester boll color7-67-8$1 8-68-8 $125 9-6 10-6 10-4 $150 Jr Proto Open Jet Speed Jr Profile Proto Jr 1/2ASpeed Sr Y2A Speed Op A Speed slightly raised Bee A-insert-type same type plug Nick used recently set new Open speed record 121 mph recent Day ton Ohio meet Al Stegins reported have run 117-119 #2 engine open face exhaust Gb Bee plug really honking proto #1 engine until ground jumped up grab should noted three official flights Langlois jet lap glide included clocking 6-op non-pressure tank Mike getting 9 laps under power launch getting pylon after ship still ground some flights 211 210 50% propylene oxide 50% nitro-methane Nit rotane about ten flights flown same set valves stub backup valves same diameter retainer Retainer turned back 050 stock 50/50 fuel fed pressure tank coming through metering jet drilled #42 drill size Bill also advises careful what9752 mph 21118mph 9406 mph 10634 mph 10461 mph 10621 mph 1043 1%9406 Backup 10269%21020 Backup 10146% 984 1% 9418% 88 00% ever tubing using watch out pin holes Bill Pardue indicated doing series jet articles Da Gaz have read some Bills jet scoop Gaz Encourage jet speed fliers sub scribe Da Gaz Its $500 per year Doc Jackson 523 Meadowbrook Circle St Davids PA 19087 Between Doc Bill folks should getting inter ested speed flying again I-lope indicator speed upswing Received call T Wright Jacksonville Florida about King Orange meet December 30 31 1977 January 1 1978 weather fair rained little enough really stop things Participation ex cellent Free Flight Stunt Combat Goodyear Rat Entries Speed Carrier low AT set new D speed record under 78-79 rules 197 mph mini-pipe Also Bob Day AT joined forces set Profile Proto record 92 mph Would like find out Mike Hoyt still handling jet pipes heads Have able contact him nt forget United States Control Line Model Airplane Championships Winston-Salem NC June 17-18 body thats anybody gonna Contact Bill Pardue 1201 Surry Drive Greensboro NC 27408 next column will cover tach props what RPM ranges look Gene Hem pel Tom Upton 301 N Yale Dr Garland TX 75042 Spitfire/Greene continued page 43 bend shape -sq lead ing edges dry glue place Glue WT-6 top two wing tip semblies WT-4 WT-5 wing tip shown Let dry Hardware Hookup Connect lead-out wires bellcrank slip wires through ribs Use 3/32 aluminum tubing inboard wing tip protect wing tip assembly Glue tubing place epoxy Bend 3/32 pushrod wire shown Sol der bellcrank using washer top bottom install bellcrank Sol der nut bellcrank make certain wont come apart flight Landing Gear Cut piece 1/8 ID brass tubing shown wing section fuselage plan landing gear slip June 1978 97 fio7rnd&i PROPELLERS PITCH AND AIRFOIL FOR EFFICIENCY AT YOUR DEALER RIGHT HAND ROTATION 3/B BORE THE PURCHASER Pusher 10-6$150 G RUSH ST JOHN INDIANA 46373 1st Quay Barber 2nd Mike Langlois 3rd Quay Barber 4th Quay Barber 5th Phil Bagwell 6th Mike Langlois bypass flute very using new Gb Gb plug the