i'm of the opinion that 'shims' are not needed. first concern for me is any centerboard trunk inconsistency means the board will jam. also, anything falling into the cockpit pennant hole may cause the board to become more easily jammed. there are over 1000 boats out there with this centerboard design (M15 + M17 + M23 + Sage 17) and very few reports of the board falling out. i agree that reducing the gap between board and trunk, when board down, means the boat will sail a bit better. -- :: Dave Scobie :: former M15 owner - www.freewebs.com/m15-named-scred :: M17 #375 SWEET PEA - www.m17-375.webs.com On Tue, Sep 16, 2014 at 5:31 PM, Jim Sadler <jimsadler@jascopacific.com> wrote:
How about this skippers
Glue a fiberglass shim to each side of the trunk. Use wood shim to hold it until the glue dries.
Capt. Jim Sadler Skipper sailing vessel Pelican M-15
-----Original Message----- From: montgomery_boats [mailto:montgomery_boats-bounces@mailman.xmission.com] On Behalf Of Chesley Sugg Sent: Tuesday, September 16, 2014 12:19 PM
On Sep 16, 2014, at 3:05 PM, Tyler Backman wrote:
Thanks Dave!
I'll need to test it on the water, but I think you solved the problem with the diagram- I think I was sailing with the board too low, to the point where very little board remained in the trunk. I had the lowest point of the top of the centerboard between the pin and pendant just flush with the keel, but it sounds like it should be a few inches higher than that.
Tyler Davis, CA M15 #157 "Defiant"