Owen_Dyneto wrote:
I believe the counter rotation can be achieved with the gear box. I have seen BW Velvet Drives stamped RH or LH.
I agree with Packard8's comment earlier in this thread that different rotations can be achieved with a gearbox, but there seemed some doubt that the Packard Marine engines were actually built in either rotation. I just came across a data plate from one of Packard's IM-357 marine engines and you'll note it was, like the postwar IM-245 and 356 engines, available in either clockwise or counterclockwise rotation; pairs with counter-rotation were used on dual prop-shaft installations.
The unconventional firing order for right-hand rotation was also used on the 1st and 2nd Series Eight (1923-1926 automotive motors.
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