IN EARLY 1975 FAI world record RC closed-course distance 210 miles set 1968 B Kunce California June 1975 second attempt airplane Tortoise set new record 225 miles reported November 1975 Model viation Since previous record stood seven years seemed new safe Before 225-mile record officially homologated FAI notice came claim 241 miles flown October 1 1975 Russian team Aldochine Miakinine several reasons less over joyed news First held record such short time second has long-standing rivalry tween USA USSR area FAI records finally question Russians actually flew record question still unresolved no details claim have yet obtained USA Mr Miakinine coholder widely disputed RC powered 1971 speed record 213 mph using model external dowels rubberbands hold down wing Well after learning mid-October new Russian claim became urgent exceed 241 miles June flight 225 miles halted broken die sel engine crankcase lack fuel Now stronger hybrid 29 diesel engine used August 1975 set new FAI straight-line distance rec ord 266 miles 59% fuel capac ity winter approaching RARecord closed-course attempt scheduled cancelled because weather spring 1976 new Kraft Bicentennial Series radio installed order bene fit decreased current drain airplane reduced servo crosstalk improved transmitter sticks Finally May 8 1976 gathered cold windy day Beltsville MD airport attempt recapture record Russia AMA observers Tom Vallee CD John Tallman Luther Jackson Stew Meyers Tom Holder first two hours flight trou blefree mixture control began go rich erratically problem understood time three nerve-wracking hours engine rpm wandered up down unpredictably despite repeated adjustments mix ture control hoped everything would hang together long enough exceed Russian 241-mile record re quired 2% after five hours 174 miles flying engine turning too slowly sustain flight Later analysis pointed two chief sus pected causes mixture problem bad cell 12-volt field box battery pre vented adequate continuous charging transmitter battery Furthermore airport being used simultaneously parachute training walkie-talkies operating frequencies unknown us both reasons evidently caused mixture control go rich irregular intervals subsequent tear-down engine revealed incredible amount crud built up piston contrapiston compression ratio risen normal 201 up 401 501 engine overcompressed best run ning mixture richer delay time ignition richer mixture makes combustion deposits diesel requires still richer mixturethe vicious circle finally brought down Tortoise next record attempt May 31 1976 Beltsville airport official witnesses flight Lee Minin CD Chet Opal Luther Jackson Ken Greenhouse Ron Moltz Fred Koenig also observing Herb Krueger Bill Squirrell clouds quite low morning delaying start flight few test hops found air52 Model Aviation Well very long day Tortoise drones on takeoff weighed 10 lbs 2 oz. 85 fluid ounces being fuel load Power 29 hybrid Diesel Weber holds three world marks R Lee Minin Bill Squirrel Waber Chet Opal Biggest problem lining up official wit nesseshow would like watch another guys airplane day steadily After 10 hours 48 minutes four seconds Tortoise gone 424 miles setting new RC closed-course recordthe longest nonstop distance ever covered model airplane Richard Weber Russians Waiting early cloud cover rise Ito R Luther Jackson Herb Krueger Chet Opal Lee Minin Dick Weber plane disappeared went above 100 feet altitude landed wet wings 1000 am haze lifted enough official record attempt begin Tortoise weighed 10 lbs 2 oz before takeoff including about 85 fluid ounces fuel board tanks completely filled since late start meant would enough daylight empty Power Prop l-7 fitted hybrid 29 diesel course flown consisted two py Ions separated 5029 eters ex ceeding necessary 500 meters lap counted kilometer 062 1 mile contest director caller located midway between two py Ions flagman pylon signalled turns acted pylon judge two flagmen CD mechan ical counter keep track laps com pleted first takeoff attempt Tortoise ground looped does often loaded fuel second try successful heavy plane lumbered sky 1006 am after 450-foot ground run Lap times first several hours averaged 57 seconds speed around course about 39 mph beginning approach magic number 396 laps 2% above 241-mile Russian record engine slowed down somewhat Lap times creased 60-66 seconds hesitated adjust mixture much fear kill ing engine lap 396 6A hours after takeoff joy Beltsville recaptured record Russians day over lots fuel re mained extend record Now mix ture adjusted found rather rich Either fuel pressure regulator changed setting perhaps speck dirt valve linkage needle valve slipped Maximum lean setting transmitter normally stopped engine pro vided nearly correct mixture lap times returned 56-58 seconds hours went surprisingly rapidly con tinuing challenge put good lap times make distance time available Only during last two three hours plane much lighter did notice significant improvement lap times running 52-54 sec onds aided adventurous low-level continued page 81 Right After record recognized cake baked Marilyn Smitha fitting celebra tion truly epic flight Too bad couldnt have cake eat too October1976 53 Below Set 1006 am takeoffwhich re quired 450-ft run Its possible fly dawn dusk nowand will someone elect fly hours darkness Compact lightweight design top line components quality handcrafting precise control functions make new 3-Channel Radio Control System trend setter industry system youll have utmost confidence Training competing just enjoying yourself use best use RS See local dealer tell him want Grab Handful RS/3-SO contact us directly 1*5 5ysEcnn 4LLflYL COMPANY 5301 Holland Dr Beltsville Md 20705 UTelephone 301 474-2900 flying crisper turns As cloudy darkness descended fly ing altitude raised improve visibil ity became difficult see flagmen pylons nearly three football fields away abandoned flags favor auto headlights signal turns got harder see airplane near ends course Just after turn could see it approaching relied Doppler shift engine sound few seconds tell Tortoise headed way keeping mind FAI rules plane must land within 500 meters release point should crash 500 meters away entire flight would negated record lost Finally decided wisdom better part valor After flying 683 kilometers 424 miles engine killed holding nose straight up achieved two objec tives immediate regaining record Russians surpassing 76% old goal doubling Kunces record of2lO miles Tortoise glided out sight its dark approach 854 pm landed just ten feet release point After few photos weigh-in re moved wing find one-half ounce fuel remained hour two rich running earlier day evi dently burning fuel 2-3 times normal rate because expected have enough fuel board 13 hours actual flight time 10 hours 48 minutes 04 seconds average speed 393 mph flight 424 miles longest nonstop distance flight ever cate gory model aviation set such records several ingredients essential first dream reach higher further extend understanding new horizons must come long hours work frustration necessary turn dream reality im portant ingredient people People like mentioned earlier willing give up day own flying wit ness official record attempt People like Dean Smith Ed Smigocki sup plied critical engineering machining skills special parts cant get store finally patient wife Carol Jean stifles comments about things like weeds grass always supplies mountain sandwiches other goodies sustain crew pilot lots FAI records out RC FF CL engines rubber power gliders Get USA October1976 81 1*5 Channel Canada RS Systems canada 2050 Mansfietd St Montrear Osebec H3A 1Y9 canada Tortoise Weber continued page 53 very end flight Weber judging Doppler effect engines exhaust Ito R Minin Opal Jackson Weber I PEANUT SCALE PLANS ACCESSORIES crnlt catalog 50e FO 80X 2493-AM LA MESA CALIF 92043
Edition: Model Aviation - 1976/10
Page Numbers: 52, 53, 81
IN EARLY 1975 FAI world record RC closed-course distance 210 miles set 1968 B Kunce California June 1975 second attempt airplane Tortoise set new record 225 miles reported November 1975 Model viation Since previous record stood seven years seemed new safe Before 225-mile record officially homologated FAI notice came claim 241 miles flown October 1 1975 Russian team Aldochine Miakinine several reasons less over joyed news First held record such short time second has long-standing rivalry tween USA USSR area FAI records finally question Russians actually flew record question still unresolved no details claim have yet obtained USA Mr Miakinine coholder widely disputed RC powered 1971 speed record 213 mph using model external dowels rubberbands hold down wing Well after learning mid-October new Russian claim became urgent exceed 241 miles June flight 225 miles halted broken die sel engine crankcase lack fuel Now stronger hybrid 29 diesel engine used August 1975 set new FAI straight-line distance rec ord 266 miles 59% fuel capac ity winter approaching RARecord closed-course attempt scheduled cancelled because weather spring 1976 new Kraft Bicentennial Series radio installed order bene fit decreased current drain airplane reduced servo crosstalk improved transmitter sticks Finally May 8 1976 gathered cold windy day Beltsville MD airport attempt recapture record Russia AMA observers Tom Vallee CD John Tallman Luther Jackson Stew Meyers Tom Holder first two hours flight trou blefree mixture control began go rich erratically problem understood time three nerve-wracking hours engine rpm wandered up down unpredictably despite repeated adjustments mix ture control hoped everything would hang together long enough exceed Russian 241-mile record re quired 2% after five hours 174 miles flying engine turning too slowly sustain flight Later analysis pointed two chief sus pected causes mixture problem bad cell 12-volt field box battery pre vented adequate continuous charging transmitter battery Furthermore airport being used simultaneously parachute training walkie-talkies operating frequencies unknown us both reasons evidently caused mixture control go rich irregular intervals subsequent tear-down engine revealed incredible amount crud built up piston contrapiston compression ratio risen normal 201 up 401 501 engine overcompressed best run ning mixture richer delay time ignition richer mixture makes combustion deposits diesel requires still richer mixturethe vicious circle finally brought down Tortoise next record attempt May 31 1976 Beltsville airport official witnesses flight Lee Minin CD Chet Opal Luther Jackson Ken Greenhouse Ron Moltz Fred Koenig also observing Herb Krueger Bill Squirrell clouds quite low morning delaying start flight few test hops found air52 Model Aviation Well very long day Tortoise drones on takeoff weighed 10 lbs 2 oz. 85 fluid ounces being fuel load Power 29 hybrid Diesel Weber holds three world marks R Lee Minin Bill Squirrel Waber Chet Opal Biggest problem lining up official wit nesseshow would like watch another guys airplane day steadily After 10 hours 48 minutes four seconds Tortoise gone 424 miles setting new RC closed-course recordthe longest nonstop distance ever covered model airplane Richard Weber Russians Waiting early cloud cover rise Ito R Luther Jackson Herb Krueger Chet Opal Lee Minin Dick Weber plane disappeared went above 100 feet altitude landed wet wings 1000 am haze lifted enough official record attempt begin Tortoise weighed 10 lbs 2 oz before takeoff including about 85 fluid ounces fuel board tanks completely filled since late start meant would enough daylight empty Power Prop l-7 fitted hybrid 29 diesel course flown consisted two py Ions separated 5029 eters ex ceeding necessary 500 meters lap counted kilometer 062 1 mile contest director caller located midway between two py Ions flagman pylon signalled turns acted pylon judge two flagmen CD mechan ical counter keep track laps com pleted first takeoff attempt Tortoise ground looped does often loaded fuel second try successful heavy plane lumbered sky 1006 am after 450-foot ground run Lap times first several hours averaged 57 seconds speed around course about 39 mph beginning approach magic number 396 laps 2% above 241-mile Russian record engine slowed down somewhat Lap times creased 60-66 seconds hesitated adjust mixture much fear kill ing engine lap 396 6A hours after takeoff joy Beltsville recaptured record Russians day over lots fuel re mained extend record Now mix ture adjusted found rather rich Either fuel pressure regulator changed setting perhaps speck dirt valve linkage needle valve slipped Maximum lean setting transmitter normally stopped engine pro vided nearly correct mixture lap times returned 56-58 seconds hours went surprisingly rapidly con tinuing challenge put good lap times make distance time available Only during last two three hours plane much lighter did notice significant improvement lap times running 52-54 sec onds aided adventurous low-level continued page 81 Right After record recognized cake baked Marilyn Smitha fitting celebra tion truly epic flight Too bad couldnt have cake eat too October1976 53 Below Set 1006 am takeoffwhich re quired 450-ft run Its possible fly dawn dusk nowand will someone elect fly hours darkness Compact lightweight design top line components quality handcrafting precise control functions make new 3-Channel Radio Control System trend setter industry system youll have utmost confidence Training competing just enjoying yourself use best use RS See local dealer tell him want Grab Handful RS/3-SO contact us directly 1*5 5ysEcnn 4LLflYL COMPANY 5301 Holland Dr Beltsville Md 20705 UTelephone 301 474-2900 flying crisper turns As cloudy darkness descended fly ing altitude raised improve visibil ity became difficult see flagmen pylons nearly three football fields away abandoned flags favor auto headlights signal turns got harder see airplane near ends course Just after turn could see it approaching relied Doppler shift engine sound few seconds tell Tortoise headed way keeping mind FAI rules plane must land within 500 meters release point should crash 500 meters away entire flight would negated record lost Finally decided wisdom better part valor After flying 683 kilometers 424 miles engine killed holding nose straight up achieved two objec tives immediate regaining record Russians surpassing 76% old goal doubling Kunces record of2lO miles Tortoise glided out sight its dark approach 854 pm landed just ten feet release point After few photos weigh-in re moved wing find one-half ounce fuel remained hour two rich running earlier day evi dently burning fuel 2-3 times normal rate because expected have enough fuel board 13 hours actual flight time 10 hours 48 minutes 04 seconds average speed 393 mph flight 424 miles longest nonstop distance flight ever cate gory model aviation set such records several ingredients essential first dream reach higher further extend understanding new horizons must come long hours work frustration necessary turn dream reality im portant ingredient people People like mentioned earlier willing give up day own flying wit ness official record attempt People like Dean Smith Ed Smigocki sup plied critical engineering machining skills special parts cant get store finally patient wife Carol Jean stifles comments about things like weeds grass always supplies mountain sandwiches other goodies sustain crew pilot lots FAI records out RC FF CL engines rubber power gliders Get USA October1976 81 1*5 Channel Canada RS Systems canada 2050 Mansfietd St Montrear Osebec H3A 1Y9 canada Tortoise Weber continued page 53 very end flight Weber judging Doppler effect engines exhaust Ito R Minin Opal Jackson Weber I PEANUT SCALE PLANS ACCESSORIES crnlt catalog 50e FO 80X 2493-AM LA MESA CALIF 92043
Edition: Model Aviation - 1976/10
Page Numbers: 52, 53, 81
IN EARLY 1975 FAI world record RC closed-course distance 210 miles set 1968 B Kunce California June 1975 second attempt airplane Tortoise set new record 225 miles reported November 1975 Model viation Since previous record stood seven years seemed new safe Before 225-mile record officially homologated FAI notice came claim 241 miles flown October 1 1975 Russian team Aldochine Miakinine several reasons less over joyed news First held record such short time second has long-standing rivalry tween USA USSR area FAI records finally question Russians actually flew record question still unresolved no details claim have yet obtained USA Mr Miakinine coholder widely disputed RC powered 1971 speed record 213 mph using model external dowels rubberbands hold down wing Well after learning mid-October new Russian claim became urgent exceed 241 miles June flight 225 miles halted broken die sel engine crankcase lack fuel Now stronger hybrid 29 diesel engine used August 1975 set new FAI straight-line distance rec ord 266 miles 59% fuel capac ity winter approaching RARecord closed-course attempt scheduled cancelled because weather spring 1976 new Kraft Bicentennial Series radio installed order bene fit decreased current drain airplane reduced servo crosstalk improved transmitter sticks Finally May 8 1976 gathered cold windy day Beltsville MD airport attempt recapture record Russia AMA observers Tom Vallee CD John Tallman Luther Jackson Stew Meyers Tom Holder first two hours flight trou blefree mixture control began go rich erratically problem understood time three nerve-wracking hours engine rpm wandered up down unpredictably despite repeated adjustments mix ture control hoped everything would hang together long enough exceed Russian 241-mile record re quired 2% after five hours 174 miles flying engine turning too slowly sustain flight Later analysis pointed two chief sus pected causes mixture problem bad cell 12-volt field box battery pre vented adequate continuous charging transmitter battery Furthermore airport being used simultaneously parachute training walkie-talkies operating frequencies unknown us both reasons evidently caused mixture control go rich irregular intervals subsequent tear-down engine revealed incredible amount crud built up piston contrapiston compression ratio risen normal 201 up 401 501 engine overcompressed best run ning mixture richer delay time ignition richer mixture makes combustion deposits diesel requires still richer mixturethe vicious circle finally brought down Tortoise next record attempt May 31 1976 Beltsville airport official witnesses flight Lee Minin CD Chet Opal Luther Jackson Ken Greenhouse Ron Moltz Fred Koenig also observing Herb Krueger Bill Squirrell clouds quite low morning delaying start flight few test hops found air52 Model Aviation Well very long day Tortoise drones on takeoff weighed 10 lbs 2 oz. 85 fluid ounces being fuel load Power 29 hybrid Diesel Weber holds three world marks R Lee Minin Bill Squirrel Waber Chet Opal Biggest problem lining up official wit nesseshow would like watch another guys airplane day steadily After 10 hours 48 minutes four seconds Tortoise gone 424 miles setting new RC closed-course recordthe longest nonstop distance ever covered model airplane Richard Weber Russians Waiting early cloud cover rise Ito R Luther Jackson Herb Krueger Chet Opal Lee Minin Dick Weber plane disappeared went above 100 feet altitude landed wet wings 1000 am haze lifted enough official record attempt begin Tortoise weighed 10 lbs 2 oz before takeoff including about 85 fluid ounces fuel board tanks completely filled since late start meant would enough daylight empty Power Prop l-7 fitted hybrid 29 diesel course flown consisted two py Ions separated 5029 eters ex ceeding necessary 500 meters lap counted kilometer 062 1 mile contest director caller located midway between two py Ions flagman pylon signalled turns acted pylon judge two flagmen CD mechan ical counter keep track laps com pleted first takeoff attempt Tortoise ground looped does often loaded fuel second try successful heavy plane lumbered sky 1006 am after 450-foot ground run Lap times first several hours averaged 57 seconds speed around course about 39 mph beginning approach magic number 396 laps 2% above 241-mile Russian record engine slowed down somewhat Lap times creased 60-66 seconds hesitated adjust mixture much fear kill ing engine lap 396 6A hours after takeoff joy Beltsville recaptured record Russians day over lots fuel re mained extend record Now mix ture adjusted found rather rich Either fuel pressure regulator changed setting perhaps speck dirt valve linkage needle valve slipped Maximum lean setting transmitter normally stopped engine pro vided nearly correct mixture lap times returned 56-58 seconds hours went surprisingly rapidly con tinuing challenge put good lap times make distance time available Only during last two three hours plane much lighter did notice significant improvement lap times running 52-54 sec onds aided adventurous low-level continued page 81 Right After record recognized cake baked Marilyn Smitha fitting celebra tion truly epic flight Too bad couldnt have cake eat too October1976 53 Below Set 1006 am takeoffwhich re quired 450-ft run Its possible fly dawn dusk nowand will someone elect fly hours darkness Compact lightweight design top line components quality handcrafting precise control functions make new 3-Channel Radio Control System trend setter industry system youll have utmost confidence Training competing just enjoying yourself use best use RS See local dealer tell him want Grab Handful RS/3-SO contact us directly 1*5 5ysEcnn 4LLflYL COMPANY 5301 Holland Dr Beltsville Md 20705 UTelephone 301 474-2900 flying crisper turns As cloudy darkness descended fly ing altitude raised improve visibil ity became difficult see flagmen pylons nearly three football fields away abandoned flags favor auto headlights signal turns got harder see airplane near ends course Just after turn could see it approaching relied Doppler shift engine sound few seconds tell Tortoise headed way keeping mind FAI rules plane must land within 500 meters release point should crash 500 meters away entire flight would negated record lost Finally decided wisdom better part valor After flying 683 kilometers 424 miles engine killed holding nose straight up achieved two objec tives immediate regaining record Russians surpassing 76% old goal doubling Kunces record of2lO miles Tortoise glided out sight its dark approach 854 pm landed just ten feet release point After few photos weigh-in re moved wing find one-half ounce fuel remained hour two rich running earlier day evi dently burning fuel 2-3 times normal rate because expected have enough fuel board 13 hours actual flight time 10 hours 48 minutes 04 seconds average speed 393 mph flight 424 miles longest nonstop distance flight ever cate gory model aviation set such records several ingredients essential first dream reach higher further extend understanding new horizons must come long hours work frustration necessary turn dream reality im portant ingredient people People like mentioned earlier willing give up day own flying wit ness official record attempt People like Dean Smith Ed Smigocki sup plied critical engineering machining skills special parts cant get store finally patient wife Carol Jean stifles comments about things like weeds grass always supplies mountain sandwiches other goodies sustain crew pilot lots FAI records out RC FF CL engines rubber power gliders Get USA October1976 81 1*5 Channel Canada RS Systems canada 2050 Mansfietd St Montrear Osebec H3A 1Y9 canada Tortoise Weber continued page 53 very end flight Weber judging Doppler effect engines exhaust Ito R Minin Opal Jackson Weber I PEANUT SCALE PLANS ACCESSORIES crnlt catalog 50e FO 80X 2493-AM LA MESA CALIF 92043