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Old 07-31-2009, 05:50 PM   #31 (permalink)
Kevin Johnson
EcoModding Lurker
 
Join Date: Jul 2009
Location: Tampa, FL
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Quote:
Originally Posted by Bicycle Bob View Post
The crankcase of a single can be regarded as an air spring for the piston. It is pretty efficient at any pressure, but with lower windage losses when run at low pressure. To recover throttle plate losses, replace it with a turbine and bypass arrangement, or a variable pitch turbine.
There is an old but very good discussion on this link:

http://www.eurospares.com/sucker.htm

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