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Old 18 May 2019, 11:56   #1
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Inside patch through valve

Can someone point me to a guide or youtube of how to perform an internal patch through the valve? I have a leak near the rub strake I would like to patch from the inside. I tried searching but couldn't find anything. Thanks
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Old 18 May 2019, 21:07   #2
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I've never heard of this method. Not sure how you would prep the internal surface, apply glue on the inside, position the patch, and then apply good pressure to it through a valve hole that might be some distance from the location of the hole. How big is the hole in question? A small discreet external patch is likely to be your best bet.
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Old 19 May 2019, 00:16   #3
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It's small but right on the edge of the rub strake.. so the patch would have to overlap the rub strake. I have all the supplies, but not sure of the proper fix with the difference in height with between the tube and the strake.
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Old 19 May 2019, 00:39   #4
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The correct fix is to partially remove the rubbing strake (a few inches in each direction around the hole) with a hot air gun, then apply the patch, then reglue the strake over the top.
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Old 19 May 2019, 00:53   #5
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When I reglue the strake over the top is it necessary to remove the old adhesive off and clean etc?
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Old 19 May 2019, 03:28   #6
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Quote:
Originally Posted by transitron View Post
When I reglue the strake over the top is it necessary to remove the old adhesive off and clean etc?


Yes . New glue doesnít like old glue . It will work , but not for long .
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Old 22 May 2019, 08:33   #7
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I love doing inside patches through the valve. Customers are always surprised when they can see the abrasion, but it doesn't leak anymore.

Internal patches are best for longevity, because they're not exposed to as much heat or UV, and they're not under constant pressure being "blown off". Also, no mechanical wear risk or peeling.

In short, the process is to deflate the chamber, undo the external part of the valve, tie some string to the internal nut, then allow the nut to drop inside out of your location. I usually stick a broomhandle or something wood inside then, so I can use it to manuever around the material until I get close to the leak location. Then it's simply a matter of performing a patch working through that 2" diameter hole. You'll have to "taco" your patch to fit it in.

No masking tape required is the best part.
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