View Full Version : Seal centreboard slot on Start

Indrek Aavisto
15th March 2008, 12:04 AM
I removed the centreboard from my Starboard Start because I have not needed to use it for several years. At speed, water tends to fountain up through the slot (it did do this to some extent even with the centreboard in place) and the drag is probably not insignificant. Can anyone recommend a way to seal off the slot. I tried duct tape, but it peeled off very quickly.


John Kemsley
15th March 2008, 01:20 AM
A long time ago I used plumbers silicon to seal older style fin slots, its also easy(ish) to remove.

15th March 2008, 11:50 AM
Hi Indrek,
I answered this question for you on rec.windsurfing, but I will take another shot at it here.
How you "fill up" the cavity left by removing the centerboard assembly is going to depend alot on how "permanent" you want your plug to be.
If you take a couple of thin sheets of plastic or fiberglass (already cured) you could cut
a fairly precision piece to fit in the recess where the rubber CB gasket was when you had the CB in the board.
If you want it permanent, you could glue it in with epoxy.
If you want it less permanent, you could glue it in with something like rubber cement or a latex base contact adhesive.
If you wish to fill in the entire cavity, you could cut a piece of hard closed cell foam (divynicell or something similar) and glue a piece into the cavity that would fill the entire cavity.
Then make a "plate" to go on the top that uses the same pattern and shape as the deck pad that held the CB assembly in the board.
Hope this helps,