Send me the information on installing another thrust bearing in the Ross
PRSU. This is the one that I bought on Ebay that was on a rotary mounted
on a BD-4 that supposedly had been taxied but not flown. The engine was
rust frozen solid. The PRSU is set up for left rotation and I have a
like new 68x85 wood prop for it. Anybody interested??????
I was planning on braizing a hose fitting on the Renesis fuel rails but
on second thought it already has a bib on it for the the quick
disconnect tube it used so I can open up or cut off the pinched end and
use a regular hose and clamp. H. Karibian
I might be interested in the prop. What are you asking for it and
where are you located?
You can contact me off list at bob (at) bob-white.com.
(left is "normal" rotation isn't it? I can never remember if it's
referenced to sitting in the plane or looking at it from the front!)
Bob W.
"Normal" rotation is referenced from the pilot's seat in a tractor
airplane and it is to the right as you look over the nose of the
airplane. The Mazda engine rotates to the right when mounted in an
airplane configuration. The higher ratio, 2.85:1, reduction units
drive the propeller from the planet carrier and rotate in the same
direction as the engine. The lower ratio, 2.17:1, reduction units drive
the propeller from the ring gear and the rotation is opposite to the
engine. This reverse rotation propeller could be used on a 2.17 drive
in the tractor configuration or possibly be used on a 2.85 drive in a
pusher configuration. Some wood and composite propellers have an
aluminum drive plate bonded to the side intended to mate with the engine
flange. An aluminum crush plate is used on the other side of the
propeller hub. Some are counter bored on the drive plate side for
bushings that are larger than the propeller bolts. So, sometimes is
not easy to flip the propeller over to change it from tractor to
pusher. Here are the two sides of my Catto 3-blade, right hand, pusher.
Aubrey Thompson
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