Paul,
This is an engine that was prepared several years ago for gyrocopter
use.   Do you recognize the style of  the workmanship well enough to
guess who may have built it?  I has an IVO prop hub and the large
friction wheel for the rotor drive assist.  A welded fitting on the top
of the water pump has been broken off.  The PSRU  has a 2.85:1 ratio.  I
have not seen  a Ross unit  with the conical shaped bellhousing.  Does
that indicate it is an early Ross?  I haven't taken any of it apart yet,
but looking through the exhaust ports, the rotors and housings look
nearly unused.  I has 2mm metal apex seals.  It came with a nice light
weight starter which I am trying to source (it is similar to the Mistral
starter).  What is your opinion?

Aubrey

You got me there. No idea. I kind of like the oil pan however.

You will have to take the Ross off there and add a thrust bearing.
We have details for doing that.
-- 
Paul Lamar ...No rotor no motor.

If the engine was provided by Air Command (a gyroplane manufacturer), then
it is from Dave Atkins.  If it is a private build, good luck finding the
pedigree!!   Air Command is the only gyroplane manufacturer that provided
the rotary for their ships.  Dave provided all of them.  (and I've only seen
3 other AC ships with a rotary!)  My AC frame had my private rotary I used
from my first ship.  The other 3 rotary gyro ships that I've known are
private builds.

That oil pan is definitely a private mod!

btw... the thrust bearings in the Ross are probably good insurance.  After
800 hours of HARD flying time *gyroplane style!* my 2.85 didn't have any
thrust wear issues.  (I used it in a pusher configuration!)  Better safe
than naively ruined!   (I must'a been lucky!)

Gary Buster
East Texas
N263GB



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