We're here to swap knowledge, so I'm glad it helps.

As far as the heavier molecules, I consider this a very minor factor,
compared to the typhoon of fuel-laden air flowing past the plugs --
that's where the efficiency comes from.  The more fuel molecules you
ignite with the spark, the better your burn will be.

Keith W

Perhaps some one should try small walls in the rotor combustion chamber
depressions to promote turbulence.

Paul Lamar

Keith,
I did note your comment in regard this issue and believe the phenomenon of
the heavy molecules being flung out by the centrifugal forces, go hand in
hand with your arguments. I like your description of a 'Typhoon on fuel
laden air flowing past the plugs'. I will use that as well

Still we can't escape the fact that with the 13B ( non renenis) and
especially the PP which has a larger overlap we have contamination issues,
but more importantly, we have unburned fuel in the squish areas because the
flame front is extinguished before it can reach those areas - still nothings
perfect.

So Keith give us your objective estimate on how well the rotor combustion
area shape stacks up against the piston combustion area - in terms of
overall better or worse by ? percent, considering all the differences
between the two.

George (down under)




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