A rotary would look better!

 http://www.youtube.com/watch?v=daVDrGsaDME&feature=youtube_gdata_player

 Real Cute!!!!

 Shows how Rube Goldberg a piston engine really is.
 Also only 3 main bearings :)

 Paul Lamar

The overall complexity of an engine is not just the parts count. A
simple piston engine,a couple of cylinders, With someone that is
reasonably mechanically inclined and have access to machine shop
equipment, they will be able to make something very primitive, not too
efficient, but will run. Someone like Paul is already over qualified.
But try to make a Wankel work from scratch  may not be so simple. A
turbine is much worse.  For the material science takes on a real
meaning, especially in the hot section. I know plenty of people that can
create  a simple  piston engine, and make it work, but none for turbine,
and turbine are supposed to be simpler than piston engines, at least in
the early 1960's compare with something like the "corn on the cob"
Wright engines. Nowadays, the complexities been switched to material
sciences and electronics, (like FADEC) not part count.     That is why
there are less than 10 major  turbine manufacturers world wide.
Wankel, like the screw compressor, have some well engineered curves that
are very high in precision and hard to make. Just like precision ball
bearing is harder to make than roller bearing.  It is actually harder to
design something that is simple than to add parts. The Germans have
forgottened the KISS rule. I try to stay away from their cars.
What is engineering, to do something for $3 that any fool can do for $10.

Tony Lam
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