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Jeff,

I may not go with them (Deltahawk) if they are an option,
but they sure did seem to have a lot of positives.  Of course, I didn't
get the con side last night.

A-- the Deltahawk is a very good concept.  The TCM GAP is also a two-stroke,
Jet-A, compression ignition engine.  The major difference being the type of
scavenging.  The Deltahawk is loop-scavenged and the TCM GAP is Uni-flow.  
The loop-scavenged design uses piston ports for both intake and exhaust.  
The Uni-flow design uses piston ports for intake but four exhaust poppet
valves for exhaust.  The Uni-flow design trades off complexity for better
flow and efficiency.

ERic--

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