<super snip>

The design of the engine has a lot to do with its power to weight
ratio. Radial engines have the best power to weight ratio of all
aircraft piston engines. Horizontal opposed piston engines are next.
the loads on the crankshaft are somewhat balanced. In line and V piston
engines are last. The pistons are trying to shove the
crankshaft out the bottom of the block so the parts holding
the crank shaft in are heavier.

The rotary engine structure is the strongest with some of the
structural features of the radial and horizontal opposed piston engines.

Paul Lamar ...No rotor no motor.

What ever happend to orbital they had a light weight two stoke engine.
Clifton

Clifton,
Orbital is still around, I've been checking them for direct injection
devices. Mecury Optimax engines use orbital injectors.
Bill Jepson


The Rotary Engine NewsLetter. Powered by Linux.
ACRE NL web site. http://www.rotaryeng.net
Copyright 1998-2006 All world wide rights reserved.