I am building a twin and want my engines to spin their props in opposite directions. Does OS make an engine with a counterrotating crankshaft or a means to convert an engine to counterrotating?
No, OS does not produce an engine with a counter rotating crankshaft. Until 2 years ago we stocked a reverse camshaft for the smaller OS four strokes to allow you to do this, but these are no longer available either. A standard engine cannot simply be ‘reversed’ in any means. However, you could go to a gear reduction system for both your engines with the reverse direction engine having one more or one less gear in the gear train. However, we are not aware of anyone who makes a product specifically for this task.
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