Waveset finbox question.

General Discussion
1

I was wondering does anybody have information as to how the Waveset boxes were installed.

I was recently riding the board below and when I got home and was putting the board away I heard a gurgling sound coming from inside the board so I removed the fin and water poured out.

I’m concerned because I know the box is hollow on the inside, I just wanna make sure the foam’s not gonna take on water and destroy the board.

The board:

2

They were usually put in prior to glassing. Looks like Greg capped it or there’s some work done on it so all bets are off.  Often screws that are too long are used at some point and put a hole completely thru into the board. Fine cracks also will leak into the cells and will find it’s way to foam. The water that came out was most likely in a cell. Nice Board!

3

Hey Gene, 

Thanks.  Yes nice board, rides really fun.

Do you think the router channel was filled with just laminating resin or cloth and resin?

-Sean

4

The ones I’ve pulled out of junkers have been resin only.  Either way the screw thru would make a hole but there’s no yellowing on the deck above the box and that’s a good sign.  I say don’t mess with it and keep surfing.

5

Will do thanks…

6

Hi i just got a 1970 harbor with a wave set fin box. i am hearing the same gurgling sound coming from the fin box.  was wondering if you have noticed any water getting into the board??  

 

Thanks

Bob  

7

The underside of the Waveset box looks like an ice cube tray. If water gets in there it sloshes around and makes that sound you hear. So you need to figure out how it is getting in there. If there is no obvious ding, then it is probably through the screw holes. As mentioned above, using a screw that is too long can punch a hole in the bottom of the box. The correct length is 1 3/8" for the front screw and 5/8" for the back. I had a similiar problem and this is how I fixed it.

First, get all the water out. I used a vacuum pump but you may be able to let it drip out over time. Then I put a little vaseline in the screw holes and ran the screws in and out. You want to protect the screw holes from the resin. Then I carefully dripped in resin into each hole. I used a toothpick and a needle to pop any air bubbles that formed across the opening of the screw hole. After maybe a teaspoon in each hole, I could see resin pooling below the screw holes so I stopped. After it cures, run the screws in and out to wipe out the vaseline. That took care of the problem on my board.