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Old 21 April 2006, 15:49   #11
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Thats the lowest part of the tube. Are you sure it didn't get damaged by a rock or something. That would be my guess.....
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Old 21 April 2006, 16:30   #12
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Mooring line running under the tube????

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Old 21 April 2006, 18:36   #13
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No, I don't think it is an amphibious mouse

Tim, I have only had it for a month or so and I am fairly certain there was no sign of this damage when I bought it, it certainly didn't appear to be leaking till about ten days ago and I haven't been in any water shallow enough to hit a rock since I have had it.

Chris, fairly sure it is not a mooring line as I have had a mooring line running over the tube and where it was rubbing on the tube at one stage it restored the full "orangeness" without doing any damage, there is no sign of this where the damage is.

I am pretty sure it is a fatigue failure (even though I don't understand why) which worries me because even if I can patch it successfully, it might fail just next to the patch. You can't see it on the photos but there is a slightly "weakened" appearance following a line around the radius of the tube, going through all three failure points.

I have found a couple of people who think they have got some glue which they are going to dig out tomorrow (no idea what type it will be though).

This Hypalon stuff must be a really odd chemical makeup, I had a thought earlier and went and got some glue we had at work, used for tubeless tyre patches, this stuff is to ordinary vulcanising cement what Superglue is to Pritt-Stick, and normally sticks to anything vaguely rubbery like SH&& to a blanket! Wouldn't stick two off-cuts of the repair material together though... peeled apart very easily.

I think what I am going to try is a small patch over the immediate leak to try and make it air tight so I can pump the tube up, and once there is some pressure in it (so I have something to press against) then try a bigger patch over the whole area - I have a chunk of fabric about 1 foot x 3 feet for repairs.
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Old 21 April 2006, 18:40   #14
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You must use Bostick 242 (I think thats the right number) to glue hypalon.

Nothing else works.

Chris
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Old 21 April 2006, 18:44   #15
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Are there still any undercover Argy SBS hanging around that don't know that the war is over?
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Old 21 April 2006, 18:48   #16
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Quote:
Originally Posted by CJL
You must use Bostick 242 (I think thats the right number) to glue hypalon.
Actually Bostick 2402 - but Chris is right, its the only thing that works
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Old 21 April 2006, 19:11   #17
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Looks likely that you've hit some debris in the water whilst blatting along, this happened to me last year and took out my Transducer. I didn't notice the impact when it happened (too much noise) except the depth finder not working, but had a few small marks down the chines leading to my transducer.

Might not have caused an imidiate failier but could have weakend the area waiting for you to pump up the chamber and go BANG.

If you effect a repair yourself then I would recommend a large wear patch under each of the rear tubes to give more protection in the future.
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Old 21 April 2006, 19:17   #18
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Quote:
Originally Posted by AndrewH
Actually Bostick 2402 - but Chris is right, its the only thing that works
Nearly!!!

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Old 21 April 2006, 19:28   #19
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You definitely want to get hold of some large pieces of hypalon and make up the triangular wear patches as in jwalkers post - as he says most boats have them from new as its the most vulnerable part of the tubes.

When you tried the glue on your off cuts - I suspect its because you didn't prepare the surfaces as much as being the wrong glue. you need to rough up the surfaces a lot more than you think before gluing together. The outer skin of the hypalon is designed to repel pretty much anything so without a key nothing will stick to it.

Detailed instructions here glueing hypalon
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Old 21 April 2006, 19:36   #20
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I just nipped out to take a picture of my boat - you can only just make out the wear patch as its the same colour hypalon as the tube on my boat.

Funnily enough - on mine they stop right at the point where yours has gone - in the middle of the seam.
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