This is a motorcycle drive shaft. The output from the gear box has a sliding spline/rubber "doughnut" flex coupler; the opposite end of the drive shaft (input to the final drive) has a single cardan which is wedge pinned to the pinion gear of the final drive.
The flex coupler consists of a...
The question has to do with a stock 2 cylinder, horizontally oppossed 40 h.p. (max rpm 5600) air-cooled motorcycle engine that will not be used for racing.
The engine has a stock oil capacity of 2 quarts. If a deep sump and extended pick-up are installed allowing an additional 1 quart of oil...
