The bare engine weight is 260 pounds. My guess is you could get about 20
    pounds per housing of it if there were a 20 B aluminum intermediate
    housing
    available. Unfortunately that is not the case. There is another way to
    go however and that is use the Guru special 3 rotor shaft and main
    bearing set up. In that case the stock 20B intermediate housing is
    replaced
    by a 13B intermediate housing. Bottom line roughly 200 pounds.

    --
    Paul Lamar ...No rotor no motor.

Paul,
 I'm not sure this comment is corect with respect to GURU. All your
engine specs are correct I'm sure, but in my communications with GURU
They said the 3 rotor shaft they currently make replaces the stock 3
rotor e-shaft. There is no reason they couldn't make it to run their
added bearings, but so far they don't. They also said that the pictures
that we have seen to make a 4 rotor shaft the same way are NOT THEIRS.
They said it looked like their shaft, and they thought it might have
been photo shopped! They ARE thinking about making a shaft of this type
though. IMO The 4 rotor using the standard intermediate housings would
be the way to go. It would be almost the same length as a Mazda standard
3 rotor, with 1/3 more displacement added. IF we could do that engine
with aluminum or hybrid housings you would have the world beater Reno
race engine! De tuned it would be a super 560 replacement with way more
power.
Bill Jepson


Somebody is some where. I know Hurley engineering gets them
someplace.

Guru make two kinds of 2 rotor shafts. Stock and special with center main.
No reason they can's do the same for 3 or 4 rotors.

Here is a shot of a four rotor that uses the same trick.

Paul Lamar ...No rotor no motor.

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