Re: Two cycle gasoline engines

Posted by RAB on November 13, 2005 at 00:03:52 from (195.93.21.100):

In Reply to: Two cycle gasoline engines posted by Rich in NYS on November 12, 2005 at 16:44:24:

If you think about 2 stroke versus 4, there are several things which are different - torque and power curves probably the most important.
Now think about the situation with regards your tractor - if the 2 stroke engine has to rev twice as fast to get the same power, you would be expecting that tractor to be travelling twice as fast too. That is like up a couple of gears, or whatever, comparing with your 4 stroke equivalent.
I will add that for any engine the higher the specific power output, the narrower the useful torque band - so more gears needed.
Things are not very equal when deciding to change just one 4 stroke engine for another, let alone different types of engine.
I am sure a large 2 stroke engine of similar power could be used satisfactorily, but not a small one, revving itself (and the gearbox input shaft) at 2, 3, or more times the design for that original tracor.
RAB

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