ODDS Ends Some time back commented few unusual contest names Bob Lundberg secretary/treasurer Western Lake Superior Flying Hiking Society whew multiple interest club Duluth Minnesota wrote tell us about Third Annual Frozen Feet Meet Bob states meet held second Sunday March despite weather usually 20 degree range two feet snow still left ravages winter Only event flownOutdoor Handlaunch Glider club lacking words theyre lacking enthusiasm either Hans Ochsner Metamora Michigan mentioned good tip recent letter An added note caution isolate fuel tanks engines turn high rpm experience about 12000 rpm tached tanks instant foam dropping rpm until fuel again becomes liquid picking up again until foams high-low cycling wont fly airplane would prevalent conversions original ignition engines wont turn up high Incidentally may recall pictures Hans homemade engine conversions few columns back Hans has provided necessary information guide interested modeler converting own engine will publish next column Watch Now get inquiry about condensers Most type condenser will work proper size range One-tenth microfarad voltage range 200 400 volts whats needed Electronic parts houses will have good selection range Try avoid wax sealed condensers gasoline will penetrate epoxy sealed types best Most condensers fitted single strand wire wont stand much vibration solution mount condenser securely support single strand wire epoxy glue Keep single strand wire length minimum youre electronic supply house pick up some 18-gauge stranded wiring ignition circuit Smaller wire leads hard starting poor reliability under field conditions Art Hemler Glendora California shares experiences some later versions Cox 020 engine used 020 Replica event Seems new production engines being equipped aluminum needle valve housings instead previously used iron housing Art has found some drilled and/or tapped off center affecting fuel metering vaporization Needle valve threads rather coarse resulting sensitive needle settings either too rich too lean slight adjustment Sounds like market fine-thread needle valve assembly fit 020 similar special needle valve TD 049 developed Kirn memory serves correctly Kirn needle valve thread pitch double issue needle valve Another problem indexing cylinder crankcase resulting ex haust ports directing hot gasses directly against plastic fuel tank apparently occurs few engines would require costly handfitting manufac turer correct own engine problem would probably worth try shim under cylinder correct exhaust port alignment share Arts concern over often cantankerous 020 engine hands newcomers hobby particularly Juniors Cox Baby Bee 049 engines much easier manage hence subject Old Timer event month Old-Timer Event Month Half Scale popular SAM special events does have great deal offer Basically event continued page 117 April 1979 63 Tim Banaszak Secretary/Treasurer SAM releases Hobart Cabin compressedair model Tim sponsored event annual SAM Champs Compressed4ir enginesonce kittednow homemade bits pieces sheet brass copper tubing solder Larry Kruse pic Arden 1 9-POWOOd Megow Hangertiownatcen tral Indiana Aeromodelers contest Wright Patterson AFB Larry Willis Placed fourth Class Ignition Pylon Photo Harry Murphy Dan LockhartDaytona FL flew Playboy Jr Playboy Sr King Orange Internata Features detachable engine unit firewall forward secured fuselage rubber bands Great built-In engine protection Linstrum plc its principal hard work application acrobatic training Jagdflieger schulen fighter pilot schools Luft waffe schools socalled hack aircraft fighter other squadrons Luftwaffe Jungmeisters lived died FF Old Timers/Haught continued page 63 scale Old Timers powered abundantly available 049 engine its popu larity has usurped 020 Rep lica event Contrary 020 Replica has become all-out competition event Half Scale still fun class feel event has greatest possibilities beginners event will argue service already being offered 020 Replica class dominated expensive TD 020 engine its often cantankerous disposition Half Scale other hand offers home cast-off engines plastic C/L trainers Baby Bee 049 offers ease starting readily available parts stocks can souped up nearly TD 049 performance replacing stock cylinder twin-intake-port cylinder TD 290 series en gines using ID glow head can adapted squeeze-off timer operation drilling two #35 holes side tank routing fuel pick up line needle valve inlet out through hole timer back tank fuel sport flying simply rotate tank until fill overflow lines horizon tal limit fuel capacity time total engine run stopwatch After deter mining run time manner flight engine runs regulated timing before releasing model thus avoiding cost timer give extra Baby Bees kid down block just itching get model airplanes -scale size requirement provides unlimited variety subjects intent rules old-time designs already just right 049 power make ideal subjects beginners Since special event flown national competitions allow full-size designs used local CD option basis Im referring designs like Musketeer 42 Taibis Winged Yankee Miss Tiny Rocketeers fact designs 09 19 en gine range readily adaptable Baby Bees will perform quite well have Musketeer 42 flies great Cox 290 special engine have flown ship competition combined Glow class popular Northwest could flown competition ignition engines using Glow engine run penalty rule Rules require construction tech niques same full-size counter part using appropriately smaller wood sizes course substitution sheet built-up structure allowed Clarence Haught Rt 5 Box 16 Coeur dAlene ID 83814 FF Duration/Meuser continued page 65 whatever method suits plane fancy appropriate shapes foam plastic represent wing tail surfaces fuselage intended super-model Cover surfaces grade number layers Silkspan appropriate task using dilute white glue Reinforce highstress points bit plywood finish off whole shebang Pactra Formula-U perhaps some other space-age hardening fuel-proofing coat ing have model plane ready fly thing hand compare Rons Ramrod-derived models Starduster 600 ultralite B-C model typical trend Northern Cal year two ago Viking few unmention ables Rons foamies heavier far lightest bunch lighter some state-of-the-art stick-n tissue parts stiffness torsion bending seemed about equivalent stick-n-tissue models same size weight have some reservations about crashworthiness repairability time will tell Building time longer conventional model building first foamie suspect far shorter once get tooled up tooling isnt much follow Rons lead Youll hearing about soon Meanwhile Experiment Editors Note Ron preparing series articles Model Aviation appear early issues Outstanding modeler Most trophies rep resent significant accomplishment some significant others US rubber power competition Mulvihill Trophythe started whole Nats thing over half century ago ranks Big 1977 Nats won Joe Kubina Warren Mich igan day before eighteenth birth day set Category II record process Joe earned first trophy 11 years earlier has racked up impressive array meantime modeling interests run gamut indoor micro film indoor outdoor HL glider gas power rubber power course towline glider has trophied 1978 Nats collected total often trophies five First Place Joes non-modeling accomplishments clude bagging deer bow arrow Boy Scouting rank Life Scout Certificate Recognition Outstanding Academic Achievement State Michigan Scholarship Competition member Detroit Balsa Bugs other interests include waterskiing camping dirt-biking football has working draftsman started college last Fall wish him con tinued success Measuring rubber width Ive never totally successful measuring rubber motor stock either micrometer dialindicator-type thickness gage never get same reading twice rubber has slightly beveled edge becomes total disaster microscope micrometer stage always seemed like answer April1979 117 Kraftsmanship kit processed AAMCO GOLD BALSAThis Trainer will blow apart hits ground GREATEST R/C BASIC TRAINER4 Design & Kit ALL TIME Ask over 25000 satisfied builders H-BAY dealers sold themSHALL WE SAY MORE Aodreses Aircraft Model Co mr US Rte 1& North St Topsijeld Mass 01983 887-8541 Price $3995 kit per dollar bar ero all
Edition: Model Aviation - 1979/04
Page Numbers: 63, 117
ODDS Ends Some time back commented few unusual contest names Bob Lundberg secretary/treasurer Western Lake Superior Flying Hiking Society whew multiple interest club Duluth Minnesota wrote tell us about Third Annual Frozen Feet Meet Bob states meet held second Sunday March despite weather usually 20 degree range two feet snow still left ravages winter Only event flownOutdoor Handlaunch Glider club lacking words theyre lacking enthusiasm either Hans Ochsner Metamora Michigan mentioned good tip recent letter An added note caution isolate fuel tanks engines turn high rpm experience about 12000 rpm tached tanks instant foam dropping rpm until fuel again becomes liquid picking up again until foams high-low cycling wont fly airplane would prevalent conversions original ignition engines wont turn up high Incidentally may recall pictures Hans homemade engine conversions few columns back Hans has provided necessary information guide interested modeler converting own engine will publish next column Watch Now get inquiry about condensers Most type condenser will work proper size range One-tenth microfarad voltage range 200 400 volts whats needed Electronic parts houses will have good selection range Try avoid wax sealed condensers gasoline will penetrate epoxy sealed types best Most condensers fitted single strand wire wont stand much vibration solution mount condenser securely support single strand wire epoxy glue Keep single strand wire length minimum youre electronic supply house pick up some 18-gauge stranded wiring ignition circuit Smaller wire leads hard starting poor reliability under field conditions Art Hemler Glendora California shares experiences some later versions Cox 020 engine used 020 Replica event Seems new production engines being equipped aluminum needle valve housings instead previously used iron housing Art has found some drilled and/or tapped off center affecting fuel metering vaporization Needle valve threads rather coarse resulting sensitive needle settings either too rich too lean slight adjustment Sounds like market fine-thread needle valve assembly fit 020 similar special needle valve TD 049 developed Kirn memory serves correctly Kirn needle valve thread pitch double issue needle valve Another problem indexing cylinder crankcase resulting ex haust ports directing hot gasses directly against plastic fuel tank apparently occurs few engines would require costly handfitting manufac turer correct own engine problem would probably worth try shim under cylinder correct exhaust port alignment share Arts concern over often cantankerous 020 engine hands newcomers hobby particularly Juniors Cox Baby Bee 049 engines much easier manage hence subject Old Timer event month Old-Timer Event Month Half Scale popular SAM special events does have great deal offer Basically event continued page 117 April 1979 63 Tim Banaszak Secretary/Treasurer SAM releases Hobart Cabin compressedair model Tim sponsored event annual SAM Champs Compressed4ir enginesonce kittednow homemade bits pieces sheet brass copper tubing solder Larry Kruse pic Arden 1 9-POWOOd Megow Hangertiownatcen tral Indiana Aeromodelers contest Wright Patterson AFB Larry Willis Placed fourth Class Ignition Pylon Photo Harry Murphy Dan LockhartDaytona FL flew Playboy Jr Playboy Sr King Orange Internata Features detachable engine unit firewall forward secured fuselage rubber bands Great built-In engine protection Linstrum plc its principal hard work application acrobatic training Jagdflieger schulen fighter pilot schools Luft waffe schools socalled hack aircraft fighter other squadrons Luftwaffe Jungmeisters lived died FF Old Timers/Haught continued page 63 scale Old Timers powered abundantly available 049 engine its popu larity has usurped 020 Rep lica event Contrary 020 Replica has become all-out competition event Half Scale still fun class feel event has greatest possibilities beginners event will argue service already being offered 020 Replica class dominated expensive TD 020 engine its often cantankerous disposition Half Scale other hand offers home cast-off engines plastic C/L trainers Baby Bee 049 offers ease starting readily available parts stocks can souped up nearly TD 049 performance replacing stock cylinder twin-intake-port cylinder TD 290 series en gines using ID glow head can adapted squeeze-off timer operation drilling two #35 holes side tank routing fuel pick up line needle valve inlet out through hole timer back tank fuel sport flying simply rotate tank until fill overflow lines horizon tal limit fuel capacity time total engine run stopwatch After deter mining run time manner flight engine runs regulated timing before releasing model thus avoiding cost timer give extra Baby Bees kid down block just itching get model airplanes -scale size requirement provides unlimited variety subjects intent rules old-time designs already just right 049 power make ideal subjects beginners Since special event flown national competitions allow full-size designs used local CD option basis Im referring designs like Musketeer 42 Taibis Winged Yankee Miss Tiny Rocketeers fact designs 09 19 en gine range readily adaptable Baby Bees will perform quite well have Musketeer 42 flies great Cox 290 special engine have flown ship competition combined Glow class popular Northwest could flown competition ignition engines using Glow engine run penalty rule Rules require construction tech niques same full-size counter part using appropriately smaller wood sizes course substitution sheet built-up structure allowed Clarence Haught Rt 5 Box 16 Coeur dAlene ID 83814 FF Duration/Meuser continued page 65 whatever method suits plane fancy appropriate shapes foam plastic represent wing tail surfaces fuselage intended super-model Cover surfaces grade number layers Silkspan appropriate task using dilute white glue Reinforce highstress points bit plywood finish off whole shebang Pactra Formula-U perhaps some other space-age hardening fuel-proofing coat ing have model plane ready fly thing hand compare Rons Ramrod-derived models Starduster 600 ultralite B-C model typical trend Northern Cal year two ago Viking few unmention ables Rons foamies heavier far lightest bunch lighter some state-of-the-art stick-n tissue parts stiffness torsion bending seemed about equivalent stick-n-tissue models same size weight have some reservations about crashworthiness repairability time will tell Building time longer conventional model building first foamie suspect far shorter once get tooled up tooling isnt much follow Rons lead Youll hearing about soon Meanwhile Experiment Editors Note Ron preparing series articles Model Aviation appear early issues Outstanding modeler Most trophies rep resent significant accomplishment some significant others US rubber power competition Mulvihill Trophythe started whole Nats thing over half century ago ranks Big 1977 Nats won Joe Kubina Warren Mich igan day before eighteenth birth day set Category II record process Joe earned first trophy 11 years earlier has racked up impressive array meantime modeling interests run gamut indoor micro film indoor outdoor HL glider gas power rubber power course towline glider has trophied 1978 Nats collected total often trophies five First Place Joes non-modeling accomplishments clude bagging deer bow arrow Boy Scouting rank Life Scout Certificate Recognition Outstanding Academic Achievement State Michigan Scholarship Competition member Detroit Balsa Bugs other interests include waterskiing camping dirt-biking football has working draftsman started college last Fall wish him con tinued success Measuring rubber width Ive never totally successful measuring rubber motor stock either micrometer dialindicator-type thickness gage never get same reading twice rubber has slightly beveled edge becomes total disaster microscope micrometer stage always seemed like answer April1979 117 Kraftsmanship kit processed AAMCO GOLD BALSAThis Trainer will blow apart hits ground GREATEST R/C BASIC TRAINER4 Design & Kit ALL TIME Ask over 25000 satisfied builders H-BAY dealers sold themSHALL WE SAY MORE Aodreses Aircraft Model Co mr US Rte 1& North St Topsijeld Mass 01983 887-8541 Price $3995 kit per dollar bar ero all