With a folding prop on a 30, you will get vibration. I'm assuming you have a
two cylinder diesel? The prop is offset both vertically and horizontally -
so it is not operating evenly.
But, I don't have any wobble in the shaft - that doesn't sound right at all.
Gary
also 30-1
----- Original Message -----
From: "Dr. Mark Bodnar via CnC-List" <cnc-list@cnc-list.com>
To: <cnc-list@cnc-list.com>
Sent: Monday, June 02, 2014 1:37 PM
Subject: Stus-List Inboard drive question
Spent all day Sunday working on the boat - cleaning up the coolant mess,
installing cabin cushions, putting everything away.
Went for a short buzz out of the cove (now have boat at a dock in Deep
Cove, Mahone Bay, to see how the sailing is). My tach is not working
(another job) - so I don't have specific details - but there seems to be a
lot of vibration when I start increasing the throttle.
Moving along slowly (~3kts) there is some vibration, but not bad. But
above 1/2 (I'm totally guessing because I've not had the guts to drive it
up to full throttle yet) more vibration. at 5.5kts it feels like a lot to
me.
I did climb down earlier and look at the shaft spinning - I can see it
oscillating maybe 1/2 inch. Is that normal? A problem with the prop
(Martec folding prop - original as far as I know -- didn't see excessively
loose when I had the boat on the hard)? Or maybe a problem with the prop
shaft?
I'd rather not kill the season pulling the prop shaft out now.
Any thoughts?
Mark
CS 30 Prosecco
--
There is no cure for birth and death save to enjoy the interval.
- George Santayana
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