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Old 02 January 2007, 14:07   #51
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Originally Posted by Tim M View Post
I would be inclined to cover the main part of the sausage all the way down with glue - that would stick it for life.
Only problem I can see with that is that if you get a puncture in the inner sausage you then need to get it out to fix the hole.

For that reason (and knowing my luck with tubes...) I'm wondering if it will be better to not glue them at all. Of course with it being a double thickness it should reduce the chance of a puncture from floating debris anyway
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Old 02 January 2007, 14:37   #52
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Only problem I can see with that is that if you get a puncture in the inner sausage you then need to get it out to fix the hole.
Why?
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Old 02 January 2007, 15:08   #53
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Why?
Because if you put a patch on the outside layer the inside layer will continue to leak...
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Old 02 January 2007, 16:20   #54
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Because if you put a patch on the outside layer the inside layer will continue to leak...

With a decent glue job, the joint should act as a single, double-thick layer of fabric. A puncture should be able to be patched at the point where the air escapes (ideally, where it goes through both layers of fabric.)

Your statement would be true if air could escape the inner sausage, creep along between voids in the glue between the sausage and the outer tube, and escape at the point where the old tube ended; a good glue job wouldn't allow that (Not saying a "good" glue job would be easy to attain, of course.)

jky
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Old 02 January 2007, 16:42   #55
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Hi Stephen,

I think you could probably hold the inner tube in place with some 1 part glue which would easily be pulled apart should you need to but would probably be enough to hold it together to fix your current problem.

Just a thought?!?
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Old 02 January 2007, 17:03   #56
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With a decent glue job, the joint should act as a single, double-thick layer of fabric. A puncture should be able to be patched at the point where the air escapes (ideally, where it goes through both layers of fabric.)

Your statement would be true if air could escape the inner sausage, creep along between voids in the glue between the sausage and the outer tube, and escape at the point where the old tube ended; a good glue job wouldn't allow that (Not saying a "good" glue job would be easy to attain, of course.)

jky
True if you could glue the whole thing properly I guess. Part of the appeal of sausages though, is not having to use any glue because I have had enough of gluing expensive bits on crooked

The guy here who came up with the idea didn't glue his and told me he never had any problems (this was using full length ones that filled the whole aft chambers, which is what I will do, the aft chamber will be 1.7m long instead of these mini ones at about 30cm long contact area). He has had them in for a few years, not sure how many hours he has done though. I think once the full length ones are in there it will be fine, its just the last couple of feet of the tubes that take the battering from the water so I think the bit nearer the front of the chamber must hold the rest in place ok.

Stephen-RIB, how mobile is your mobile repair service?
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Old 02 January 2007, 19:39   #57
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Because if you put a patch on the outside layer the inside layer will continue to leak...
I was under the impression you were talking about your mini sausage which is now glued into the end of your tube, albeit with Sikaflex which you used as a glue.
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Old 03 January 2007, 05:04   #58
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I think we're sort of talking about both at the same time!

I don't want to make the mini sausage too permanent because it is a temporary repair - the tube ends don't match as the tube ends Paul uses are different to the ones Humber used on my boat (though they appear to be the same as Humber use now from photos I have seen of new boats) so it looks a bit lopsided at the moment. The other reason is that the original tube fabric has this delamination problem, every time I have tried to peel anything off with a hot air gun the fabric has delaminated and big chunks of the top layer come off with the glue exposing the nylon (?) weave underneath, so a lot of un-gluing inside the end of the old tube is likely to ruin it to the extent it can't be "sausaged" and the final repair will need a reasonably sound tube to lay inside, it won't be good if it is only half as thick as it should be in lots of places. So if I get too carried away with unsticking things it'll probably bugger up the tube beyond further use and then I'll be back to having no boat again. It's not ideal but under the circumstances its the best of a bunch of not very good options - unless somebody decides to give me a new boat

On top of that I am virtually certain from the slightly stressed appearance around the seams of the starboard tube, that this is going to go the same way and it is just a matter of time, so for a robust repair I need to do both sides anyway. A 1.7m set of sausages complete with inflation valves and relief valves, landed here, will set me back about 500 or so if shipped by sea, and I can just about bear that extra cost, but I've not ordered them yet as I am waiting to see if another kind offer by a RIBnet member bears any fruit but I'll not say anything about that yet

I basically need this repair to last me till about April because the next ship heading this way closes on 10 Jan which is too early to get them made, the following one about mid to late Feb which will mean I don't get the sausages here until April. Sending them by DHL will add about another 350 so not really a sensible option if I can make this last.
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Old 03 January 2007, 09:13   #59
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If the other one is going to go the same way this one did why not glue this mini sausage in properly and then replace the other one with the same sort of thing later on so they match I would have thought that would be a lot cheaper than buying a big sausage now and then another in a year or so....
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Old 03 January 2007, 09:25   #60
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If the other one is going to go the same way this one did why not glue this mini sausage in properly and then replace the other one with the same sort of thing later on so they match I would have thought that would be a lot cheaper than buying a big sausage now and then another in a year or so....
It would, but I want to do it properly so I can (hopefully) forget about it, or sell it with a clear conscience that I'm not selling a dud to somebody.
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