How do you plan to do the high pressure oil seal
    to the CS hyd prop Doug?

    Paul Lamar ...No rotor no motor.

    Paul & Doug,
      If I might interject, the way several systems are handling the high
    pressure connection to the prop shaft is to put a plain bearing surface
    on the shaft and compareable inlet holes on the shaft and exterior
    bearing. If the housing is wet you don't put seals on it at all, rather
    you let the oil exit the plain bearing like all the rest, The volume
    won't be high. The typical low pressure end seal and at most an oil
    flinger are all that is needed. Marcotte has been doing this on their
    system, and I've seen several others in the works. The only thing
    against this system is that you must have the room for a 1 to 1-1/2"
    wide bearing on the exterior of the shaft. I'm supprised Tracy hasn't
    done one. He could extend the front bearing just a little and groove the
    exterior bearing with a second feed from the governor. Perhaps there's
    no room in the housing.
    Bill Jepson

    Here are some pictures about what Bill is talking about.

    Paul Lamar

Paul,
 I favor the second picture, OR an exterior bearing that is grooved at
the transfer area. You do not have to have a bearing anywhere near as
long as the Lyc front bearing, UNLESS you plan to cary the prop loads
also. If you use exterior bearings (ball or plain) for the loads the
"transfer" bearing needs only be about 1 inch wide if closely fitted
(.0005-.001 in.) or a bit longer if you increase that number by half.
Bill Jepson

Better knock out a 3D Bill.

Paul Lamar

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