Hi Paul,

Do you have any comments on the AIE 225CS from England, the 3W-180 from
Germany, and or the Geiger A 1-37 and the A 2-74 from Germany?  I have
personally seen and put my hands on each of these Hybrid,
Starter/Generator/Motor (SGM) engines. As well as seeing the Geiger's
running. I also receive, 4 to 6 or more e-mail copies of every e-mail, but
your worth it!

Larry Gordon
LoPresti Gordon VTOL

Taking one at a time. For the AIE 225CS  the BSFC is not near as good as a one rotor
Mazda at .47 and is about the same as an Austro 50 HP motor glider engine at
.52.

None oil cooled rotors have that problem.

Screen capture the specification sheets and check the BSFC.

The BSFC is the main problem while a Cont. O-200 might be as low
as .43.

BTW ducted fans are very inefficient when compared to rotors or propellers.
You would be better off  building  a scale V22.

Check out my VTOL.

http://www.rotaryeng.net/VTOL.html


Paul Lamar

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