153:
Citing liability concerns over producing a two-stroke engine for human-carrying aircraft applications, Cuyuna declined to produce the modified engine. Instead, Cuyuna decided that the resulting engine was different enough from the base snowmobile engine that they would supply assembled and test-run
164:
The 430 was also produced in a reduced 2.362 in (60.0 mm) bore version called the 340. The modification reduced its displacement to 339 cc and output to 25 hp (19 kW) at 5500 rpm. The standard 430 has a bore of 2.658 in (67.5 mm).
119:
flying wing ultralight in the late 1970s, designer Jack McCornack experimented with a number of possible engines. Early flights used a German-made Sachs engine, but the high exchange rate and long lead times for this engine convinced him to try other options.
143:, amongst other modifications. The original snowmobile engine produced 40 hp (30 kW). Lowering the compression ratio not only de-rated the engine, but also made pull-starting easier and allowed it to run on lower-
161:
After two years of poor sales of snowmobiles, due to a dearth of snow and no lawsuits against
Pterodactyl Limited regarding the engine, Cuyuna agreed to build the engines themselves.
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150:. The resulting engine worked well, was de-rated to produce 30 hp (22 kW) at 5,500 rpm and proved reliable in service.
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158:, who would then complete the engines and be the manufacturer, allowing Cuyuna to continue producing snowmobile engines.
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Reduction drive version using a 3:1 gearbox system, dual carburetors, producing 45 hp (34 kW).
205:
Reduction drive version using a belt drive system, 30 hp (22 kW) at 5500 rpm, recoil starter
187:
Reduction drive version using a belt drive system, 25 hp (19 kW) at 5500 rpm, recoil starter
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using an additional head gasket and substituted a smaller 32 mm (1.26 in) Mikuni
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Direct drive version, 30 hp (22 kW) at 5500 rpm, recoil starter.
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as having the best potential. In 1979 he modified the engine with a
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542:"The Cuyuna 430D Experimental Aircraft Engine, Ptimes Vol 2 No 1"
592:
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177:
Direct drive version, 25 hp (19 kW) at 5500 rpm,
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8th
Edition, page D-17. Cybair Limited Publishing, 2001.
756:
735:
704:
678:
627:
135:extension, an additional main bearing, lowered the
99:are a family of two-stroke, twin-cylinder piston
379:Direct drive two-stroke piston aircraft engine
604:
154:shortblocks as parts to McCornack's company,
8:
535:
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103:engines that were redesigned to serve as
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515:, Cuyuna Development Company, undated
26:
7:
573:Ultralight Aircraft Shopper's Guide
338:Swallow Aeroplane Company Swallow B
800:Two-stroke aircraft piston engines
795:Air-cooled aircraft piston engines
25:
298:Meadowlark Ultralight Meadowlark
278:International Ultralite Banchee
211:35 hp (26 kW) version
736:Marine Engines & Jet pumps
348:Vintage Ultralight SR-1 Hornet
1:
540:McCornack, Jack (Fall 1980).
511:Cuyuna Development Company:
406:428 cc (26.11 cubic inches)
816:
442:40:1 premixed fuel and oil
397:2.362 in (60 mm)
388:2.658 in (68 mm)
129:Cuyuna Development Company
64:Cuyuna Development Company
318:RagWing RW4 Midwing Sport
253:Eastern Ultralights Snoop
243:American Aerolights Eagle
29:
479:0.46 hp/lb (0.76 kW/kg)
461:30 hp (22 kW)
415:65 lb (29 kg)
371:General characteristics
228:Advanced Aviation Husky
223:Advanced Aviation Cobra
127:engine produced by the
123:McCornack settled on a
367:Cuyuna & McCornack
757:Sport Vehicle Engines
475:Power-to-weight ratio
360:Specifications (430D)
263:Goldwing Ltd Goldwing
115:While developing the
30:Cuyuna 340 & 430
353:Waspair HM 81 Tomcat
313:Pterodactyl Ascender
84:Pterodactyl Ascender
343:Ultra-Fab Sundowner
333:Star Flight Tristar
156:Pterodactyl Limited
117:Pterodactyl Pfledge
105:ultralight aircraft
705:Industrial Engines
679:Multi Fuel Engines
308:Pinaire Ultra-Aire
303:Mitchell Wing P-38
79:Major applications
782:
781:
466:Compression ratio
435:Regular auto fuel
258:Fletcher Hercules
148:regular auto fuel
137:compression ratio
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88:
16:(Redirected from
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628:Aircraft engines
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547:. Archived from
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421:McCornack/Cuyuna
273:Hovey Delta Bird
268:Goodwin Tri-Moto
238:Airmass Sunburst
233:Airborne Avenger
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571:Cliche, Andre:
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446:Cooling system:
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323:Robertson B1-RD
248:Chandelle Mk IV
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49:National origin
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513:Cuyuna Engines
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581:0-9680628-1-4
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554:on 2011-07-16
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107:powerplants.
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60:Manufacturer
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54:United States
52:
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556:. Retrieved
549:the original
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482:
473:
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445:
439:
431:
418:
409:
402:Displacement
400:
391:
382:
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364:
363:
216:Applications
163:
160:
155:
152:
122:
114:
96:
92:
90:
453:Performance
440:Oil system:
111:Development
18:Cuyuna 430R
789:Categories
558:2009-09-29
486:References
432:Fuel type:
426:Components
411:Dry weight
293:Manta FX-3
288:LEAF Trike
141:carburetor
125:snowmobile
101:snowmobile
97:Cuyuna 340
93:Cuyuna 430
70:First run
42:aeroengine
39:Two-stroke
419:Designer:
365:Data from
133:crankcase
169:Variants
622:engines
696:460 MF
691:230 MF
686:215 MF
579:
470:12.5:1
393:Stroke
145:octane
552:(PDF)
545:(PDF)
377:Type:
208:UL II
73:1979
35:Type
577:ISBN
384:Bore
202:430R
196:430F
190:430D
184:340R
174:340D
95:and
91:The
774:540
769:500
764:460
748:690
743:460
727:690
722:460
717:230
712:215
670:808
665:690
660:540
655:460
650:430
645:340
640:230
635:215
620:2si
791::
520:^
494:^
612:e
605:t
598:v
561:.
477::
468::
413::
404::
395::
386::
181:.
20:)
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.