Rotax 377 engine, 377 Rotax engine specifications and technical data: |
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Rotax 377 engine data.
| DESCRIPTION: | Two-cycle, two-cylinder engine, oil in fuel lubrication |
| BORE: | 62. mm |
| STROKE: | 61 mm (2.40 in.) |
| DISPLACEMENT: | 368. cc |
| COMPRESSION RATIO: | Theoretical 9.6, effective 6.3 |
| POWER OUTPUT: | 29.5 kw (35 HP) at 6000 rpm |
| TORQUE MAX.: | 25 ft lbs. @5500 rpm |
| MAXIMUM RPM: | 7000 RPM |
| DIRECTION OF ROTATION: | Counter-clockwise, viewed towards PTO |
| CYLINDER: | 2 light alloy cylinders w/ cast iron sleeves |
| PISTON: | Aluminum cast piston with 2 rings |
| PISTON/CYLINDER CLEARANCE: | 0.08- 0.09mm (.00315-.00354 in.) |
| IGNITION SYSTEM: | Bosch with points and condensers |
| GENERATOR OUTPUT: | AC 12V 110W + 30W |
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RECTIFIER-REGULATOR: (optional) |
a.) #9103 requires minimum load 12 W (1 amp.) |
| b.) #9251 requires no minimum load | |
| IGNITION TIMING: | 2.09 mm = .086" BTDC |
| CONTACT POINT GAP: | 0.4 mm = .015" |
| SPARK PLUG: | 12mm NGK B8ES |
| ELECTRODE GAP: | .015" GAP |
| CARBURETOR: | 1 X BING 36mm, with hand lever choke |
| FUEL PUMP: | pneumatic fuel pump #6903 |
| FUEL: | Regular gasoline, octane not below 90 unleaded |
| LUBRICATION OF ENGINE: | Super two stroke oil (AV-2) |
| MIXING RATIO: | 50 TO 1 (2%) |
| STARTER: | Rewind starter optional: electric mag side without recoil option |
| REDUCTION GEARBOX "B": | Reduction gear-box with Torsional shock absorber |
| RATIOS: 2.00 to 1, 2.238 to 1, 2.58 to 1 | |
| DIRECTION OF PROP ROTATION: | Clockwise, viewed toward prop flange |
| COOLING: | Air cooled by axial fan |
| WEIGHTS: | Engine without carburetor, intake silencer, fuel pump, exhaust system |
| Carb With Rubber Socket......... 2.0 lbs.......( 0.9 kg.) | |
| Exhaust System (approx.)......... 10.8 lbs.......( 4.9 kg.) | |
| Electric Start Kit (Optional)..... 7.70 lbs.......( 3.5 kg.) | |
| Reduction Box "B" - Dry.............9.9 lbs.......(4.5 kg.) | |
| Click here for performance and measurements. | |
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