Subject: RV-4 Motor Mount / Front Cover
From: ACRE NL
Date: 10/9/2001, 8:37 AM

"Brian D. Cain" wrote:

Paul, per this picture, I've got a question:  Are the trailing spark plug
holes in these rotor housings unshrouded (modified) to be similar (or equal)
to the leading spark plug holes?

B

Ken?

I would not think so as that would really lose compression in the 
combustion chamber. According to Rotary Engine by Kenichi Yamamoto
There is a pressure change in this area of the housing that would
cause a bigger leak from one chamber to the next. The trailing spark plug
holes must be kept small for this reason.

Paul Lamar
 
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