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Old December 10th 15, 08:40 PM posted to rec.crafts.metalworking
David Lesher David Lesher is offline
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First recorded activity by DIYBanter: Jan 2007
Posts: 662
Default Mount a 2 stroke upside down?

Tim Wescott writes:


Weed-whacker and chainsaw motors are, to my knowledge, piston timed, with
the intake port to the crankshaft opened and closed by the skirt of the
piston rather than by the crank or a rotor attached to the crank. So,
they'll run pretty much the same in either direction, once you get the
spark timing sorted out.


The classic 3 cylinder 2-cycle Saab 95 would run either way. Car Talk
once had a Puzzler on how one could beat a muscle car in a drag race.
The answer was "backwards..." as the Saab could be started the other
way and have 4-speeds of reverse...

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