Hi Jim,
Do you have the prop diameter & pitch, blade profile, tip clearance
and gearbox reduction ratio to share with us?
Cheers, Russ
Sweet 35 mk-1
At 09:54 AM 15/03/2014, you wrote:
I'm the happy new owner of an old 38-2, and I'm wondering if there
is something wrong with my propeller or its pitch. It's a fixed
three-blade on a Westerbeke 27 four-cylinder diesel.
At 3,000 RPMs it only pushes the boat along at 6.0 knots. Seems like
too much exertion for too little return, doesn't it? The engine is
strong, the bottom is freshly painted and the boat is not carrying
much extra weight. With a hull speed over 7 knots, shouldn't it be
chugging along at 6.5 knots or more at 2,500 RPMs?
I'd really appreciate any insights from owners of old 38s, as well
as those of you who've seen the benefits of prop changes and pitch
adjustments for both powering and sailing.
Thanks,
Jim Lynch
Olympia, WA
38-2
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