"dbraun" wrote in message
lkaboutboats.com...
wrote:

Back to more questions somewhat related to the Perkins 4-108. This
sailboat
is a pig to back up. It really wants to prop walk to starboard.
According
to
the owner, it's got a fixed, 3-blade prop. I believe the boat also has a

folding prop aboard in a locker. Would that help?

First off, put me in the camp that recommends technique as a means for
neutralizing prop walk. You seriously do not want to eliminate prop walk
as it is the only thing that will turn the stern of your boat predictably
and reliably. People's biggest beef is that it will turn the stern in only
one direction and I can see that if you're viewing boats as watery
versions of cars, then this would be a little upsetting. If you want to
see what prop walk can do, check out the Dashew video "Dashew Offshore".
They are able to spin their vessel 360 degress with ZERO headway. All
technique.

That said, I can understand where some people may not be in the right
frame of mind to learn technique (think reluctant sailing wife being given
"verbal hints" when backing down an anchor). You also mentioned that the
vessel was being sailed in SF bay. You may want to know that there is a
prop shop called Bay Propeller (510-337-9122) that has a technique for
modifying fixed props. They tap the blade tips over to create little
tiplets. They claim it eliminates prop walk AND increases thrust. I have
no personal experience with their results, but it would be worth a try.

David

As a follow up to this, I gave them a call. Unfortunately, they no longer
can do this work (it's not very expensive, about $160 for a 3-blade prop).
There is a patent issue. The guy I spoke with said he would be happy to
refer me to the patent holder (a former employee), but that it might be a
couple of months before he's going to be able to accept clients (the patent
holder that is).

They said that they had excellent results from the work, but of course this
is all heresay at this point.

--
"j" ganz @@
www.sailnow.com