Quote:
Originally Posted by Occasionally6
It might be interesting to investigate what combination of ignition and exhaust valve timing defines the limits before there would be a possibility of the firing cylinder trying to turn the engine backwards.
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I remember hearing a couple of stories many years back about a scooter with a 1-cylinder 2-stroke engine. I think there were occasions when it would backfire (significant pre-ignition) for some reason, and some of those times it would actually start running backwards.
-soD