On May 29, 3:12*pm, Charles Vincent wrote:

They do have an OHV version I believe. * At the RPM's these engines run
at i.e. direct drive prop, I am not sure the L head is that much of a
compromise.
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All of the Pobjoy's were geared, OHV engines. They produced 80hp @
3300 rpm (prop speed of 1400rpm). Weight was 130 lbs.

-R.S.Hoover