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post #12 of Old 04-07-2019
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Re: Replacing transmission oil cooler

Originally Posted by Minnewaska View Post
As I understand it, sailboat transmissions are often undersized, for the loads, as they are expected to run intermittently. Our weight and horsepower are at the absolute top of the range, for our hurth gear model, for intermittent recreational use. For constant industrial use, the maximum HP drops in half and our gear would be grossly undersized. I suspect the gear is actually working harder and heating more than it’s larger stinkpot breatheren, ie the need for the cooler.
I don't know, you may be right in general. I do have a couple of gear specialist contacts I'm going to talk to.

But in my specific instance given that I got 20,000 hours out of a 72C Velvet drive on a 165hp Perkins without a cooler. I don't see why the same transmission running at the same RPM would would need one on a 55hp Westerbeke

The hysterical laughter you hear as you drive a way in your"new" boat ..... is the seller.

Last edited by boatpoker; 04-07-2019 at 06:13 PM.
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