"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

Brian and Paul,
The housing is stock (and it is also junk!).  If you look closely you can see that the lower / leading plug hole is BIG and the upper / trailing plug hole is very small.  This is just a mockup and does not have rotors in the housing so you can see a bit of lite thru the holes.

Ken Powell
kenpowell@aristotle.net

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