CONTROL LINE SPEED ir Dayton The last Speed contest year Dayton Cold Cash Speed Bash Dayton OH week away write Im frantically building new F-40 airplane reworking some old ones putting new piston NovaRossi 21 reworking fiberglass propellers never enough time have equipment finished ready contest date arrives its way long can remember might easier reduced number events fly wouldnt much fun first competition ever flew still painting Speed model contest won second place though guess Ill never learn Engine Modifications new OS 65-powered sidewinder flew pretty well Nationals 187 mph need another 10 mph Maybe few minor modifications will give boost performance engine stock head Im changing will take insert-type glow plug theyre supposed good several hundred rpm ball bearings also stock riveted steel ball separator will replaced kind plastic cage increased radial clearance Henry Nelson uses bearings high-performance engines hopefully will have less friction boost speed January1999 137 Authors Class D sidewinder OS 65 Fourth Nats187 mph Changes engine might get closer 200-mph goal Sidewinder engine fuel tank pan assembly Note wire skid attach elevator pushrod control mechanism bend wire fuel filler tubes crankcase pressure fitting monoline unit 90 fit brass lug elevator pushrod sleeve engine looked little out round some scuff marks below seal area Tim Gillott going hone will interesting see much modifications will increase speed Sidewinder Problems Since didnt glue fiberglass spars aluminum wings Class D B airplanes vibrating rattling during flight slowing airplanes down epoxied trailing edges popped loose couple spots too reglued put few rivets give added support strength trailing edge tapered balsa strips glued put epoxy two sides fiberglass fishing pole main spars inserted rotated position Now wings feel solid rock hope work better also worked down couple fiberglass propellers eight inches diameter adjusted pitch about eight inches near center 11 inches tip old Rat Race propellers now Im using 65 Speed engine Class B sidewinder powered old mean old OPS 29one linen phenolic rotor worn out tired called Henry Nelson front-intake 29s uses same crankcase 40 turn fins down would fit cowl got havent run yet Its AAC engine chromed aluminum sleeve highsilicon alloy aluminum piston Ill see goes Ive told front-rotaryvalve engines run faster rearintake ones havent way experiment myself Almost 15s used FAI Federation Aeronautique Internationale Speed front-intake types Carl Dodge last use rear-intake engine Nobody Ive talked knows front intakes faster tuned intake effect less friction Florida Dayton may last Speed contest year hope make Florida January 2-3 1999 Control Line fliers planning contest several events other Speed check magazine Theres nothing like warm vacation middle cold winter chance fly Speed Tom Zon called told about maybe Ill have stuff ready Safety Nobody likes nagged about safety us need kicked awake now Santo Rizzotto Florida Speed fliers planning January contest months before Nats Gordon Kent building new airplanes working new engines testing getting ready early July Santo got hand cut propeller testing engine neglected clean sterilize care properly Friday before Nats Santo ended up hospital blood poisoninga nasty infection stayed instead going Nats Props can give bad wounds need taken care quickly properly Nats quite few years ago flying Free Flight Helicopter event competitor stuck hand prop 15-powered model heard brrrp two fingers chewed up looked over stuck mouth Thats about worst thing can mouth hotbed germs flier got infection took several months antibiotics cure Props arent hazard used fly Speed St Louis during months July August Buder Park sits tree-sheltered hole along river occasion got hot friends knee exposed hole jeans burned knelt blacktop Warren Kurth ran out drinking water year drank water melted ice StyrofoamTM cooler Bad decision warmed up contracted intestinal infection took several months cure So careful take care injuries Think before act never fly alone Use ear plugs muffs run engine youll end up tinnitus ringing ears like have hear constant cccccc several other old Speed fliers know have same problem Joe Sullivan PIano Texas wrote asking information about ceramic bearings Composite bearings manufactured Norton Advanced Ceramics company East Granby Connecticut rolling elements balls silicon nitride material almost hard diamond races normal hard high-strength steel alloy bearings capable extremely high speeds have greater stiffness hardness fatigue resistance times life all-steel bearings balls impervious corrosion require much less lubrication Composites sound perfect highrpm Speed engines dont tried obtain some several years ago sales engineer told unsuitable two-stroke engines tried some trouble old-time Speed fliers have experimenting different bearings since Hornet McCoy Dooling days first tried precision bearings manufacturing dimensions controlled parts rounder concentric closer design dimensionsmillionths inch less werent worth extra cost though didnt help engines Much friction bearings caused balls rubbing against cagethe ball separator good luck split ball bearings made Split Ball Bearing Company outer race fractured spread apart allowing balls dropped one-by-one one-piece linen phenolic cage Two snap rings clamped outer race back together used split ball bearings TWA 29 engine built 1965 still good long after K&B 65 engine came out Bill Wisniewski made nylon cages its bearings now standard K&Bs other engines Sometime along way someone figured out bearings increased radial clearance lasted longer gave better performance Speed engines now too standard equipment high-performance engines wonder Norton Company used standard dimensions metal cages tested ceramic composite bearings engines Would bearings work added increased radial clearance nonmetallic cages find time Ill try get answers Materials Ive making parts such intake venturis spinners needed some aluminum bar stock Its difficult find short pieces stock its expensive buy 20-foot lengths need few inches learned company will sell steel aluminum alloys brass cast iron plastics sizes forms inch want foot 2024 aluminum can get Metal Express Company several outlets call 800 657-0721 want catalog Model Aviation
Edition: Model Aviation - 1999/01
Page Numbers: 137, 138
Edition: Model Aviation - 1999/01
Page Numbers: 137, 138
CONTROL LINE SPEED ir Dayton The last Speed contest year Dayton Cold Cash Speed Bash Dayton OH week away write Im frantically building new F-40 airplane reworking some old ones putting new piston NovaRossi 21 reworking fiberglass propellers never enough time have equipment finished ready contest date arrives its way long can remember might easier reduced number events fly wouldnt much fun first competition ever flew still painting Speed model contest won second place though guess Ill never learn Engine Modifications new OS 65-powered sidewinder flew pretty well Nationals 187 mph need another 10 mph Maybe few minor modifications will give boost performance engine stock head Im changing will take insert-type glow plug theyre supposed good several hundred rpm ball bearings also stock riveted steel ball separator will replaced kind plastic cage increased radial clearance Henry Nelson uses bearings high-performance engines hopefully will have less friction boost speed January1999 137 Authors Class D sidewinder OS 65 Fourth Nats187 mph Changes engine might get closer 200-mph goal Sidewinder engine fuel tank pan assembly Note wire skid attach elevator pushrod control mechanism bend wire fuel filler tubes crankcase pressure fitting monoline unit 90 fit brass lug elevator pushrod sleeve engine looked little out round some scuff marks below seal area Tim Gillott going hone will interesting see much modifications will increase speed Sidewinder Problems Since didnt glue fiberglass spars aluminum wings Class D B airplanes vibrating rattling during flight slowing airplanes down epoxied trailing edges popped loose couple spots too reglued put few rivets give added support strength trailing edge tapered balsa strips glued put epoxy two sides fiberglass fishing pole main spars inserted rotated position Now wings feel solid rock hope work better also worked down couple fiberglass propellers eight inches diameter adjusted pitch about eight inches near center 11 inches tip old Rat Race propellers now Im using 65 Speed engine Class B sidewinder powered old mean old OPS 29one linen phenolic rotor worn out tired called Henry Nelson front-intake 29s uses same crankcase 40 turn fins down would fit cowl got havent run yet Its AAC engine chromed aluminum sleeve highsilicon alloy aluminum piston Ill see goes Ive told front-rotaryvalve engines run faster rearintake ones havent way experiment myself Almost 15s used FAI Federation Aeronautique Internationale Speed front-intake types Carl Dodge last use rear-intake engine Nobody Ive talked knows front intakes faster tuned intake effect less friction Florida Dayton may last Speed contest year hope make Florida January 2-3 1999 Control Line fliers planning contest several events other Speed check magazine Theres nothing like warm vacation middle cold winter chance fly Speed Tom Zon called told about maybe Ill have stuff ready Safety Nobody likes nagged about safety us need kicked awake now Santo Rizzotto Florida Speed fliers planning January contest months before Nats Gordon Kent building new airplanes working new engines testing getting ready early July Santo got hand cut propeller testing engine neglected clean sterilize care properly Friday before Nats Santo ended up hospital blood poisoninga nasty infection stayed instead going Nats Props can give bad wounds need taken care quickly properly Nats quite few years ago flying Free Flight Helicopter event competitor stuck hand prop 15-powered model heard brrrp two fingers chewed up looked over stuck mouth Thats about worst thing can mouth hotbed germs flier got infection took several months antibiotics cure Props arent hazard used fly Speed St Louis during months July August Buder Park sits tree-sheltered hole along river occasion got hot friends knee exposed hole jeans burned knelt blacktop Warren Kurth ran out drinking water year drank water melted ice StyrofoamTM cooler Bad decision warmed up contracted intestinal infection took several months cure So careful take care injuries Think before act never fly alone Use ear plugs muffs run engine youll end up tinnitus ringing ears like have hear constant cccccc several other old Speed fliers know have same problem Joe Sullivan PIano Texas wrote asking information about ceramic bearings Composite bearings manufactured Norton Advanced Ceramics company East Granby Connecticut rolling elements balls silicon nitride material almost hard diamond races normal hard high-strength steel alloy bearings capable extremely high speeds have greater stiffness hardness fatigue resistance times life all-steel bearings balls impervious corrosion require much less lubrication Composites sound perfect highrpm Speed engines dont tried obtain some several years ago sales engineer told unsuitable two-stroke engines tried some trouble old-time Speed fliers have experimenting different bearings since Hornet McCoy Dooling days first tried precision bearings manufacturing dimensions controlled parts rounder concentric closer design dimensionsmillionths inch less werent worth extra cost though didnt help engines Much friction bearings caused balls rubbing against cagethe ball separator good luck split ball bearings made Split Ball Bearing Company outer race fractured spread apart allowing balls dropped one-by-one one-piece linen phenolic cage Two snap rings clamped outer race back together used split ball bearings TWA 29 engine built 1965 still good long after K&B 65 engine came out Bill Wisniewski made nylon cages its bearings now standard K&Bs other engines Sometime along way someone figured out bearings increased radial clearance lasted longer gave better performance Speed engines now too standard equipment high-performance engines wonder Norton Company used standard dimensions metal cages tested ceramic composite bearings engines Would bearings work added increased radial clearance nonmetallic cages find time Ill try get answers Materials Ive making parts such intake venturis spinners needed some aluminum bar stock Its difficult find short pieces stock its expensive buy 20-foot lengths need few inches learned company will sell steel aluminum alloys brass cast iron plastics sizes forms inch want foot 2024 aluminum can get Metal Express Company several outlets call 800 657-0721 want catalog Model Aviation
