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The
LycomingLycoming Engines is a U.S. aircraft engine company, known primarily for its general aviation engines. For most of its history Lycoming has been part of the AVCO group as AVCO Lycoming. In 1987 AVCO was purchased by Textron to become Textron Lycoming...
O-235 is a family of four-cylinder, air-cooled, horizontally opposed piston aircraft engines that produce 100 hp, derived from the earlier
O-233 engine.
Well-known designs that use versions of the O-235 included the
Cessna 152The Cessna 152 is an American two-seat, fixed tricycle gear, general aviation airplane, used primarily for flight training and personal use.-Development:...
,
Grumman American AA-1The Grumman American AA-1 series is a family of light, 2-seat aircraft. The family includes the original American Aviation AA-1 Yankee Clipper and AA-1A Trainer, the Grumman American AA-1B Trainer and TR-2 and the Gulfstream American AA-1C Lynx and T-Cat.-Development history:The Yankee was...
series,
Beechcraft Model 77 Skipper|-See also:-References:* "Airdata File: Beechcraft PD 285". Air Enthusiast, December 1975, Vol 9 No 6. p. 312.*...
, Piper PA-38 Tomahawk and the Piper PA-22-108 Colt.
Development
The engines are all
carburetorA carburetor , carburettor, or carburetter is a device that blends air and fuel for an internal combustion engine. It is sometimes shortened to carb in North America and the United Kingdom....
-equipped, feature dual
magnetoA magneto is an electrical generator that uses permanent magnets to produce alternating current.Magnetos adapted to produce pulses of high voltage are used in the ignition systems of some gasoline-powered internal combustion engines to provide power to the spark plugs...
ignition and have a displacement of 233 cubic inches (3.82 L). The first O-235 model was
certifiedA Type Certificate, is awarded by aviation regulating bodies to aerospace manufacturers after it has been established that the particular design of a civil aircraft, engine, or propeller has fulfilled the regulating bodies' current prevailing airworthiness requirements for the safe conduct of...
on the 11 February 1942.
The O-235 was developed into the lighter-weight
Lycoming IO-233 engine for light sport aircraft.
Variants
O-235-C1
- Power 115 hp at 2800 rpm, dry weight 246 lb (112 kg) Provision for dual pump drives, tractor and pusher installation.
O-235-C1A
- Power 100 hp at 2450 rpm, dry weight 236 lb (107 kg) Similar to O-235-C1 except ignition timing, lower rpm and power. Optional 2 position or automatic propeller governor drive.
O-235-C1B
- Power 115 hp at 2800 rpm, dry weight 245 lb (111 kg) Similar to O-235-C1 except with retarded breaker magnetos.
O-235-C1C
- Power 108 hp at 2600 rpm, dry weight 243 lb (110 kg) Similar to O-235-C1 except with Slick magnetos.
O-235-C2A
- Power 115 hp at 2800 rpm, dry weight 246 lb (112 kg) Similar to O-235-C1 except with a type 1 propeller flange.
O-235-C2B
- Power 115 hp at 2800 rpm, dry weight 247 lb (112 kg) Similar to O-235-C2A but with two S-1200 series magnetos.
O-235-C2C
- Power 108 hp at 2600 rpm, alternate rated maximum continuous power rating of 100 hp at 2400 rpm, dry weight 244 lb (111 kg) Similar to O-235-C2B except with Slick magnetos and shielded ignition harness.
O-235-E1
- Power 115 hp at 2800 rpm, dry weight 250 lb (113 kg) Similar to O-235-C1 except crankcase and crankshaft supply pressurized oil to a constant speed propeller. Accessory case changed to accommodate a standard propeller governor drive.
O-235-E1B
- Power 115 hp at 2800 rpm, dry weight 249 lb (113 kg) Similar to O-235-E1 except for S4LN-200 series retarded breaker magnetos.
O-235-E2A
- Power 115 hp at 2800 rpm, dry weight 250 lb (113 kg) Similar to O-235-E1 except Type 1 propeller flange.
O-235-E2B
- Power 115 hp at 2800 rpm, dry weight 251 lb (114 kg) Similar to O-235-E2A except incorporates S-1200 series magnetos.
O-235-F1
- Power 125 hp at 2800 rpm, dry weight 250 lb (113 kg) Similar to O-235-C1 except compression ratio, fuel grade and rating.
O-235-F1B
- Power 125 hp at 2800 rpm, dry weight 249 lb (113 kg) Similar to O-235-F1 except retarded breaker magnetos.
O-235-F2A
- Power 125 hp at 2800 rpm, dry weight 250 lb (113 kg) Similar to O-235-F1 except a Type 1 propeller flange.
O-235-F2B
- Power 125 hp at 2800 rpm, dry weight 251 lb (114 kg) Similar to O-235-F2A but with S-1200 series magnetos.
O-235-G1
- Power 125 hp at 2800 rpm, dry weight 253 lb (115 kg) Similar to O-235-F1 except provisions for using constant speed propeller.
O-235-G1B
- Power 125 hp at 2800 rpm, dry weight 252 lb (114 kg) Similar to O-235-G1 except has retarded breaker magnetos.
O-235-G2A
- Power 125 hp at 2800 rpm, dry weight 253 lb (115 kg) Similar to O-235-G1 except a Type 1 propeller flange.
O-235-G2B
- Power 125 hp at 2800 rpm, dry weight 254 lb (115 kg) Similar to O-235-G2A except S-1200 series magnetos.
O-235-H2C
- Power 108 hp at 2600 rpm, alternate rated maximum continuous power rating of 100 hp at 2400 rpm, dry weight 243 lb (110 kg) Similar to O-235-C2C except Type 1 dynafocal mounting.
O-235-J2A
- Power 125 hp at 2800 rpm, dry weight 252 lb (114 kg) Similar to O-235-J2B except magnetos.
O-235-J2B
- Power 125 hp at 2800 rpm, dry weight 253 lb (115 kg) Similar to O-235-F2B except Type 1 dynafocal mounting.
O-235-K2A
- Power 118 hp at 2800 rpm, dry weight 252 lb (114 kg) Similar to O-235-F2A except ignition timing, lower power and reduced compression ratio.
O-235-K2B
- Power 118 hp at 2800 rpm, dry weight 253 lb (115 kg) Similar to O-235-F2B except ignition timing, lower power and reduced compression ratio.
O-235-K2C
- Power 115 hp at 2700 rpm, dry weight 248 lb (112 kg) Similar to O-235-K2A except Slick magnetos.
O-235-L2A
- Power 118 hp at 2800 rpm, alternate ratings of 115 hp at 2700 rpm, 112 hp at 2600 rpm, 110 hp at 2550 rpm and 105 hp at 2400 rpm, dry weight 252 lb (114 kg) Similar to O-235-J2A except ignition timing, lower power and reduced compression ratio.
O-235-L2C
- Power 115 hp at 2700 rpm, alternate ratings of 115 hp at 2700 rpm, 112 hp at 2600 rpm, 110 hp at 2550 rpm and 105 hp at 2400 rpm, dry weight 249 lb (113 kg) Similar to O-235-L2A except Slick magnetos and lower maximum continuous rating.
O-235-M1
- Power 118 hp at 2800 rpm, alternate ratings of 115 hp at 2700 rpm, 112 hp at 2600 rpm, 110 hp at 2550 rpm and 105 hp at 2400 rpm, dry weight 255 lb (116 kg) Similar to -L2A except provision for controllable propeller and has AS-127 Type 2 propeller flange.
O-235-M2C
- Power 118 hp at 2800 rpm, alternate ratings of 115 hp at 2700 rpm, 112 hp at 2600 rpm, 110 hp at 2550 rpm and 105 hp at 2400 rpm, dry weight 252 lb (114 kg) Similar to O-235-M1 except Slick 4200 series magnetos and Type 1 propeller flange.
O-235-M3C
- Power 118 hp at 2800 rpm, alternate ratings of 115 hp at 2700 rpm, 112 hp at 2600 rpm, 110 hp at 2550 rpm and 105 hp at 2400 rpm, dry weight 252 lb (114 kg) Similar to O-235-M1 except Slick 4200 series magnetos.
O-235-N2A
- Power 116 hp at 2800 rpm, alternate ratings of 113 hp at 2700 rpm, 110 hp at 2600 rpm, 108 hp at 2550 rpm and 103 hp at 2400 rpm, dry weight 252 lb (114 kg) Similar to O-235-L2A except reduced compression ratio and reduced power ratings.
O-235-N2C
- Power 116 hp at 2800 rpm, alternate ratings of 113 hp at 2700 rpm, 110 hp at 2600 rpm, 108 hp at 2550 rpm and 103 hp at 2400 rpm, dry weight 249 lb (113 kg) Similar to O-235-L2C except reduced compression ratio and reduced power ratings.
O-235-P1
- Power 116 hp at 2800 rpm, alternate ratings of 113 hp at 2700 rpm, 110 hp at 2600 rpm, 108 hp at 2550 rpm and 103 hp at 2400 rpm, dry weight 255 lb (116 kg) Similar to O-235-M1 except reduced compression ratio and reduced power ratings.
O-235-P2A
- Power 116 hp at 2800 rpm, alternate ratings of 113 hp at 2700 rpm, 110 hp at 2600 rpm, 108 hp at 2550 rpm and 103 hp at 2400 rpm, dry weight 255 lb (116 kg) Similar to O-235-P1 except a Type 1 propeller flange.
O-235-P2C
- Power 116 hp at 2800 rpm, alternate ratings of 113 hp at 2700 rpm, 110 hp at 2600 rpm, 108 hp at 2550 rpm and 103 hp at 2400 rpm, dry weight 252 lb (114 kg) Similar to O-235-M2 except reduced compression ratio and reduced power ratings.
O-235-P3C
- Power 116 hp at 2800 rpm, alternate ratings of 113 hp at 2700 rpm, 110 hp at 2600 rpm, 108 hp at 2550 rpm and 103 hp at 2400 rpm, dry weight 252 lb (114 kg) Similar to O-235-M3C except reduced compression ratio and reduced power ratings.
Applications
- Aero Boero AB-115
-See also:-References:*Taylor, John W. R. . Jane's All the World's Aircraft 1976-77. London:Macdonald and Jane's, 1976. ISBN 0-354-00538-3....
- AMD Alarus
|-See also:-External links:**...
- Beechcraft Model 77 Skipper
|-See also:-References:* "Airdata File: Beechcraft PD 285". Air Enthusiast, December 1975, Vol 9 No 6. p. 312.*...
- CEA DR-221
- Cessna 152
The Cessna 152 is an American two-seat, fixed tricycle gear, general aviation airplane, used primarily for flight training and personal use.-Development:...
- Fisher Celebrity
|-See also:-External links:*...
- Grumman American AA-1
The Grumman American AA-1 series is a family of light, 2-seat aircraft. The family includes the original American Aviation AA-1 Yankee Clipper and AA-1A Trainer, the Grumman American AA-1B Trainer and TR-2 and the Gulfstream American AA-1C Lynx and T-Cat.-Development history:The Yankee was...
Specifications (O-235C series)
Reference: Operator's Manual, Textron Lycoming Aircraft Engines
External links