possibly a silly tyre question

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esrite

Senior Member
Location
E. London
After work yesterday colleague and I went downstairs to find we both had punctures. We each had a spare we could just fit on. Anyway, she chucked her punctured innertube away whereas I would patch mine. We had a quick chat and she never re-uses a punctured innertube, which I don’t understand but anyway...

My query is, the tube she threw away in a continental 18/25 innertube (looks almost new, but she doesn’t want it). This is ok for my back wheel which is 700 x 25 however my front is a 700 x 28. Will this innertube fit my front wheel if I ever need to use it baring in mind I would pump it up to 100 psi?
What are your experiences
 
Its slightly too small for your front but I had a 23mm tube in my 28mm tyre on my sirrus for a few weeks no problem (also at circa 100psi) , it'll make a good spare if you can patch it.
 

Night Train

Maker of Things
Arch and I don't understand the 'not patching' thing either. Aside from the waste of money in tubes, Arch also collects old tubes to make hand bags and shoulder bags with as part of her crafts business. It is hard work finding tubes with patches on to add interest.

So get patches in different colours and shapes and then when it is nicely patched up and you are finished with it, Arch will then give it a new lease of life as a bag, or maybe a wallet.:thumbsup:
 

Night Train

Maker of Things
Arch and I don't understand the 'not patching' thing either. Aside from the waste of money in tubes, Arch also collects old tubes to make hand bags and shoulder bags with as part of her crafts business. It is hard work finding tubes with patches on to add interest.

So get patches in different colours and shapes and then when it is nicely patched up and you are finished with it, Arch will then give it a new lease of life as a bag, or maybe a wallet.:thumbsup:
 

asterix

Comrade Member
Location
Limoges or York
I'm a patcher. WRT using a 'too small' tube, I wonder if the extra stretching might not mean it has too much space between its atoms? Obviously this could make it too porous for air retention purposes?
 

I like Skol

A Minging Manc...
Patch every time! The only tubes that go in the bin are ones with catastrophic damage or ones where the patches or the tube has started to perish with age. I have tubes with 1/2 a dozen repairs that perform faultlessly. A repair kit with at least 6 patches costs a couple of quid, a tube costs a couple of quid. Simple economics shows that a repair rather than replace regime saves at least £20 for every repair kit.
 
D

Deleted member 1258

Guest
I'll patch but only the first three punctures, once a tube has three patches on it I will usually ditch it, if a tube is too badly damaged I just ditch it.
 

heliphil

Guru
Location
Essex
i have tubes with over 20 patches - I dont like to overlap patches, but will if I have to. Its only when I get a realy slow leak that I can't find , then it goes in the bin - bottom line, if it stays inflated for weeks then its ok
 
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