On 2008-02-18 17:53:58 -0500, "Ron Fiengold" said:

"Randy Haupton" wrote in message
...
I get a vibration in the steering system of my old Owens 27. I've
checked and had checked all the steering linkages and the gearbox and
there is no play.

You might be experiencing prop-whirl-flutter. Have you changed the prop
recently? If you went from a 3 blade to a 4 blade you could see this
type of problem. Does the vibration get worse on a port or starboard
turn?

I'm thinking this may be closer to the situation. I built a balanced
rudder (NACA 0012 http://homepage.mac.com/jerelull/FileSharing.html)
and at certain speeds and heels, we get a slight flutter that seems to
be from water disturbed by the prop and/or keel. Since we're
transom-hung and have a tiller, there's no where else it could come
from.

--
Jere Lull
Tanzer 28 #4 out of Tolchester, MD
Xan's pages: http://web.mac.com/jerelull/iWeb/Xan/
Our BVI trips & tips: http://homepage.mac.com/jerelull/BVI/