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Paul Lamar ...No rotor no motor.


Will these work on a 20B?

Rick Irwin.

One of the stock 20B intermediate housings is different (wider) Rick.
There is a way to use two stock or aluminum smaller 13B center housings in
a 3 rotor but one side port is not large enough. Guru racing has a special
3 rotor shaft and main bearing for doing that. However it is best done
with a 3 rotor P-port (not a side port engine) as all three intake
p-ports are the same large size. Up to four rotor engines can
be built this way.

There are two ways to do the center main bearings.
Use rollers like Guru does or use plain bearings like Curtiss Wright
did. See the pictures and the 3D.

Paul Lamar ...No rotor no motor.

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