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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--

LML website:   http://www.olsusa.com/Users/Mkaye/maillist.html
LML Builders' Bookstore:   http://www.buildersbooks.com/lancair

Please send your photos and drawings to marvkaye@olsusa.com.

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