That's a cool photo. It would be interesting to see it without the manifold stuff, or with the manifold stuff segregated, so the highlight is of actual engine components included in the short block. Then lay out all the parts in a typical reciprocating 4-stroke short block that makes the same HP next to it. Compare parts counts. Compare which parts have to reverse direction with each revolution of the eccentric or crankshaft. (Hmm, let's see, 6 apex seals vs pistons, valves, tappets, rods, wrist pins, etc, etc, etc,) I've been around rotary engines all these years and they still amaze me.

<marv>

"Rogers, Bob J." <BRogers@FDIC.gov> wrote:

Attached is another sample.