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Old 26 April 2011, 07:51   #11
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Welcome to Ribnet, by the way!

As said, problem is that once the foam is in there, you may as well have bought a dory! If you have ever tried pulling a dory up a slip, you'll know why I wouldn't bother! All of the above reasons why not are valid!

I guess if it;s a Narwhal it's going to be PVC. This means its a bit more difficult to get the glue to stick, but otherwise it's a bit like fixing a puncture on a bike. You can buy the spray things empty in garden centres for a few quid, or if you are nowhere near a gardening shop, a good clean out of your favourite kitchen surface cleaner will do the same job. Then put a nice soapy mix of water in there (anyold washing up liquid will do) and spray over the toobs. Can also use a paint brush & a jar of spapy water. Doing it with a brush means it doesn't bubble on the way out the nozzle, so easier to spot the leaks. Also before you start on the ooobs wort ha good painting of the valves.....

Just be aware that unless you find it almost instantly the place will become like a skating rink, so probably a good idea if poss to get the hull drain plug over a drain so at least some of it goes direct to ground. As said, once you find the bubbles, it's "simply" a case of applying a patch, but as I've not ever owned a PVC boat, I'll hand you over to the PVC experts for the next bit's expert tips.....
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Old 26 April 2011, 09:10   #12
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Originally Posted by jyasaki View Post
I see your point, but there are advantages to foam collars: solid fendering, no punctures on sharp stuff, and buoyancy to boot. But they're not made by filling an inflatable with foam...

jky
Solid fenderimg may have a use but its important to realise that these are filled with closed cell foam - water can't pass from one cell to the next. All that happens if you use the expanding stuff is (assuming you don't burst the toobs first) that they eventually flood with water and you have the additional weight of a water filled sponge putting a load on the tube/hull join.

As far as the OP is concerned - foollow the advice already given - don't do it!!
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Old 26 April 2011, 11:39   #13
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Solid fenderimg may have a use but its important to realise that these are filled with closed cell foam
Actually, they're molded out of stuff, and bolted to the hull. Some sort of closed cell polyethylene foam.

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As far as the OP is concerned - foollow the advice already given - don't do it!!
I think I made that point as well, in my first post.

jky
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Old 26 April 2011, 16:10   #14
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thanking you

i thank you all for your trusted advice, it seems that the common advice is to find the leak with soapy water of some kind...this isnt going to be all that easy i guess...ho hum such is life, as ive already stated im a complete green horn with this here' ribbbing'. but so looking forward to getting out on the thames esturay and beyond....but not with a leak i fear....
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Old 26 April 2011, 17:25   #15
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i thank you all for your trusted advice, it seems that the common advice is to find the leak with soapy water of some kind...this isnt going to be all that easy i guess...ho hum such is life, as ive already stated im a complete green horn with this here' ribbbing'. but so looking forward to getting out on the thames esturay and beyond....but not with a leak i fear....
Hi is it a slow leak?i went out on my 4m wk end for the first time and have a least two very small slow leaks,i know were they are and will get down to fixing them at some point but well safe and takes ages to loose air,you will find them with a good througher seacrch,i also get out on the Thames estury,had my best fishing ever out there.
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Old 27 April 2011, 18:33   #16
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Originally Posted by jyasaki View Post
Actually, they're molded out of stuff, and bolted to the hull. Some sort of closed cell polyethylene foam.



I think I made that point as well, in my first post.

jky
Sorry - quite so - didn't mean to imply otherwise. Just hoping to re-inforce the point for the OP
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