Fitting transom bung

gtflash · 10 February 2009, 19:06

Im tired of the boat filling up when the battery dies like a giant bath tub.

Ive got a bung i bought last year in the picture but never got around to fitting it

How do I fit it. Drilling and sealing transom up! Seems lots of people have donw in but i not found a definative answer.

Thanks GT

Downhilldai · 10 February 2009, 20:07

1" holesaw to cut the hole out, brush some activated GRP resin to seal the exposed ply of the transom, when dry, apply some sikaflex (or silicone will probably do the job ok) around the cut edge of the hole and shove it in there, twisting to & fro to give a good seal in the sikaflex/silicone. A couple of pilot holes for the two A4 csk screws which secure it in place.

Check the thickness of your planing pad to decide how high up from the base of the pad to drill the hole.

jyasaki · 11 February 2009, 16:54

Quote:

Originally Posted by Downhilldai

when dry, apply some sikaflex (or silicone will probably do the job ok) around the cut edge of the hole and shove it in there, twisting to & fro to give a good seal in the sikaflex/silicone.

Normal silicone caulk tends to degrade with long exposure to water. Make sure the sealant you use is rated for underwater use.

jky

Dirk Diggler · 11 February 2009, 23:57

Quote:

Originally Posted by Downhilldai

1" holesaw to cut the hole out, brush some activated GRP resin to seal the exposed ply of the transom,

If the boats been built properly, you won't have ply in that area!

Downhilldai · 12 February 2009, 00:32

Quote:

Originally Posted by Dirk Diggler

If the boats been built properly, you won't have ply in that area!

It has been known though, even in some 'proper' ones!