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Author Topic:   Keep those bronze thru-hulls?

peteinsf posted 04-08-2002 04:13 PM ET (US)
I am going to leave the 25 footer in the water for the season. In reading thru the site I noticed the most of the big boat foam problems start at the drain tubes leaking and soaking the foam on moored boats. While I am working on the hull anyway should I replace the bronze drain tubes as a preventive measure? If so should I replace them with nylon?
lhg posted 04-08-2002 04:53 PM ET (US)
Pete - these drain tubes are brass, in case you're going to replace them as is. And it has been determined they are a source of problems. The plastic ones don't look as good, but that is what Whaler is now using. I hear that the diameter of the plastic is just slightly larger than the brass?
If your current tubes are still good, with no holes in them, you should be all right, at least 'til another day. You will know when they are bad if boat is out of water. You will see signs of leakage and residue around the outer rim. In mine, the one in the bow locker went bad, and I skim coated the inside of it with Boat Life polysurfide underwater grade caulking, and it has held for 2 years now.
If the little Perko vent fitting is corroded, you might replace those also. They come with 3 holes pre-drilled in them, but you will need two more drilled, as Whaler used 5 screws in these.
peteinsf posted 04-08-2002 06:27 PM ET (US)
Thanks Larry,
I thought water might be creeping in with out any obvious sign. I was concerned since had been moored in the past and I will have her in the water May to October (November if we have an indian summer). I'll double check the vents. For the drains, is it the outside lip of the brass tube that fails or does the goo just run down the side when there are holes in the middle?
If I replace them I think I would use the plastic since the aft ones are not visible.
Pete

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Author	Topic: Keep those bronze thru-hulls?
peteinsf	posted 04-08-2002 04:13 PM ET (US) I am going to leave the 25 footer in the water for the season. In reading thru the site I noticed the most of the big boat foam problems start at the drain tubes leaking and soaking the foam on moored boats. While I am working on the hull anyway should I replace the bronze drain tubes as a preventive measure? If so should I replace them with nylon?
lhg	posted 04-08-2002 04:53 PM ET (US) Pete - these drain tubes are brass, in case you're going to replace them as is. And it has been determined they are a source of problems. The plastic ones don't look as good, but that is what Whaler is now using. I hear that the diameter of the plastic is just slightly larger than the brass? If your current tubes are still good, with no holes in them, you should be all right, at least 'til another day. You will know when they are bad if boat is out of water. You will see signs of leakage and residue around the outer rim. In mine, the one in the bow locker went bad, and I skim coated the inside of it with Boat Life polysurfide underwater grade caulking, and it has held for 2 years now. If the little Perko vent fitting is corroded, you might replace those also. They come with 3 holes pre-drilled in them, but you will need two more drilled, as Whaler used 5 screws in these.
peteinsf	posted 04-08-2002 06:27 PM ET (US) Thanks Larry, I thought water might be creeping in with out any obvious sign. I was concerned since had been moored in the past and I will have her in the water May to October (November if we have an indian summer). I'll double check the vents. For the drains, is it the outside lip of the brass tube that fails or does the goo just run down the side when there are holes in the middle? If I replace them I think I would use the plastic since the aft ones are not visible. Pete