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crankshaft

PostPosted: Fri Mar 28, 2003 12:32 am
by radiomelon
My question regards the different distances that form the lever arms
for the power and displacer cylinders. I've noticed that most
designs use a power cylinder to displacer cylinder lever arm ratio
of around .3333 or .4444. Is there any kind of "rule of thumb for
determining the distaces of the lever arms? I know the displacer
should move far enough to almost touch the inner surfaces, but is
there a guideline for how long the power cylinder lever arm should
be with respect to the displacer lever arm?