Bill Freeman wrote:

Paul,

I was intrigued by your comment on the Knight auto engine
being a sleeve-valve and started searching the web.  Check
out:

  http://www.marss.com/media/sleeve.pdf

Very interesting article on sleeve valve engines.  I had heard
of the RR Crecy, but didn't know anything about it.  I also
wonder if the 3000 hr overhaul intervals for the Bristol Centaurus
are correct.  If so, that's amazing.

Bill Freeman

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