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Old 26 December 2006, 19:46   #1
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Country: UK - Scotland
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Leaking sump bung

My Ribcraft 5.3 has a bronze bung between the under deck space and the rear sump which so far seems to leak... The threads are covered in a green coloured grease which I assume was supposed to seal it along with the rubber o-ring. Boat hasn't yet been in the water but just from rainwater filling the rear sump, the underhull cavity was pretty much full based on how much water came out when I opened the bung. It took a full day of water glugging through the bung into the sump and the pump emptying it out.

Anyone had any similar issues on Ribcrafts? Boat is only a few months old so I assume the bung would be well sikaflexed onto the bulkhead! Have yet to take it off to check.

Has anyone fitted a transom bung to allow the rear well to drain properly when boat is out of the water. I'm actually quite dissapointed that Ribcraft don't do this by default. I'm not that keen on putting a bung in unless it could be sealed properly to prevent any water getting into the ply in the transom.

Al.
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Old 27 December 2006, 04:29   #2
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Good morning al40. The Leeway`s have a bung built into the transom, and it is very useful especialy if it rains etc, and the boat is on the trailer. No need to keep the pump on. It also gets rid of all the water in the sump so no greenery growing there, the pump tends to leave in a half inch. I`m sure someone on here could show how to diy it.
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Old 27 December 2006, 06:22   #3
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unless you had it nose down, not likely to leak in but not out. a bung over hear is a rubber plug with a expansion lever on it.

anyway you can drill a hole through the transom and put a bung there or a check ball, the check ball is cool, it will open when the hulls on plain and drain, and close when not on plain.
drill your hole, paint in side the hole with fiberglass resent, my self would then use a PVC pipe with a flair cap end, let the resent kick, seal it, and that should do it for ya.
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Old 27 December 2006, 07:16   #4
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Thanks for replies. I was thinking of a bronze or stainless tube sikaflexed into the hull with one of those expaning bungs in it.

Really can't understand why Ribcraft don't fit these...... For an otherwise fantastic boat builder it seems a big oversight.
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Old 27 December 2006, 08:15   #5
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Al,

I'm quite suprised that bung leaks. Maybe it wasn't fitted properly. Wouldn't it be better to go back to RIBCRAFT and get them to sort it. You say the boats only a couple of months old it really shouldn't be doing that.
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Old 27 December 2006, 08:31   #6
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Quote:
Originally Posted by al40 View Post
Has anyone fitted a transom bung to allow the rear well to drain properly when boat is out of the water. I'm actually quite dissapointed that Ribcraft don't do this by default. I'm not that keen on putting a bung in unless it could be sealed properly to prevent any water getting into the ply in the transom.
My Humber doesn't have one either (the lowest drain point is the elephant trunk which is a good couple of inches above the bottom of the bilge) and I think it is just plain daft not to fit as standard, something that you can take out when on a trailer to keep everything dry. I don't suppose a suitable bung fitting would cost more than about a tenner for any boat - it only needs to be a 1/2" hole to keep up with anything that rainfall is likely to produce! I did think about fitting one but at the moment a boat full of water is not my greatest problem.... but I was also worried about whether I could seal it properly.

From what I have read, the Mac boats seem to have a bung fitting that you can even leave out when the boat is in the water to prevent it filling up with rain and getting swamped, but I guess it depends on the natural buoyancy of the boat type, not much good if the natural buoyancy means six inches of water inside the boat
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Old 27 December 2006, 10:40   #7
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Originally Posted by Biggles View Post
Al,

I'm quite suprised that bung leaks. Maybe it wasn't fitted properly. Wouldn't it be better to go back to RIBCRAFT and get them to sort it. You say the boats only a couple of months old it really shouldn't be doing that.
Agreed - I've been waiting for Ribcraft to return my voicemail / email - but I guess they are probably on holiday at the moment. At the very least I'm expecting a new bung assembly to be posted up.

I'm kind of concerned any damage may have already been done if it is leaking around the outside of the bung (ie where it should have been sealed) - not sure if it's a plywood core at that point.

I still like the idea of a proper bung at lowest point in the well though as the under deck bung could then be left open to really dry the area out.
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Old 27 December 2006, 11:15   #8
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Mystified me as well. a couple of time I've sponged any excess water out. And on nice days with a bit of sun I make sure the covers are off the boat to try a bit of it out.

With regards RIBCRAFT, you really need to persevere with getting hold of them.
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Old 27 December 2006, 16:26   #9
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Mystified me as well. a couple of time I've sponged any excess water out. And on nice days with a bit of sun I make sure the covers are off the boat to try a bit of it out.

With regards RIBCRAFT, you really need to persevere with getting hold of them.
YOU are the customer, you should'nt need to chase.

If you can't handle phone traffic employ someone to do it.

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Old 27 December 2006, 16:48   #10
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Are you sure it's the plug at fault? Water has been known to get into the void beneath the deck from other sources. How's your anchor locker and duct from the console to stern?
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