Hi Bill,
I have to assume that if both Tom Beard and you think highly of the PYI
PSS, then it deserves serious consideration. As I mentioned in my previous
note, we were all set to install a PYI unit to try to finally bring our
badly leaking stuffing box under control. But we were first encouraged to
try GFO, and that has proven so reliable that we have decided to postpone
installing a PYI PSS unit only if the GFO proves untenable.

But it is largely a matter of personal taste. We use the PYI "flexible"
coupling between transmission and shaft, and are very pleased with the
results. Some people feel that the flexible coupling only hides developing
problems with alignment that can cause major tranny problems.
So it goes.
regards,
Harvey

At 11:07 AM 2/9/2007 -0800, you wrote:
>Harvey,
>Perhaps I was not clear in my comments on the PYI/PSS shaft seal. I
>would not go back to a packed-seal.
>The PYI/PSS seal has been perfect, and has never malfunctioned at any
>time. Replacing it every five years
>has been a conservative choice, as the condition of the old units was
>unchanged from new. We have never
>hauled the boat just for this replacement. Rather, it has been done
>during a normal haul-out.
>
>Drip-less seals are not new, having been used in industrial equipment
>for decades.
>
>However, the choice is a personal one, and whatever you feel
>comfortable with is the best choice for you.
>
>Bill
>
>
>
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Harvey J. Karten, M.D.
Distinguished Professor, UCSD
Dept. of Neurosciences
Basis Sciences Building, Rm. 3003/3009
La Jolla, CA 92093-0608
(858) 534-4938
(858) 534-6602 - fax

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Received on Fri Feb 9 14:13:22 2007