Author Topic: Inner tube  (Read 1243 times)

meddyg

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Inner tube
« on: December 30, 2012, 06:24:18 pm »
do I need a higher quality inner tube for my rear tyre? Probably just a slow puncture as I can't find 'owt.
So maybe ailing valve;Schwalbe  Marathon tyres only 2 years old and nothing apparently wrong.
Submarine testing - nowt..... this inner tube appears to be Schwalbe 28" labelled' No 18 28/32 622/630'

Biggsy

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Re: Inner tube
« Reply #1 on: December 30, 2012, 06:43:25 pm »
Schwalbe tubes are amongst the best, so you might as well just get another.  No tube will be immune to slow punctures - unless filled with horrible sealant - although ultra light butyl ones are more susceptible than heavier ones.

http://www.schwalbetires.com/bike_tires/tubes
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Re: Inner tube
« Reply #2 on: December 30, 2012, 06:49:17 pm »
If it's a very slow puncture, hold the tube under water longer, you should eventually get a bubble forming at the leak.

Biggsy

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Re: Inner tube
« Reply #3 on: December 30, 2012, 06:49:46 pm »
Actually, the 105g of Schwalbe SV 18 is a bit light for that size (700 x 28-42).  It's good quality stuff, though.

If it's a very slow puncture, hold the tube under water longer, you should eventually get a bubble forming at the leak.

And wipe away any bubbles of air that stick to the tube as it's dunked, and wait several seconds per each few inches for any new bubble to form.
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