Puncture - repair it or new inner tube??

[Diggs]

Unless it's the valve damaged, I will change tubes (checking tyre) and patch mine when I get home.
The only one I've struggled to patch is this one.

 

[KneesUp]

Unless it's the valve damaged, I will change tubes (checking tyre) and patch mine when I get home.

Even I don't patch if it's near the valve - I threw one away last week (well, I kept it to use as padding under my bar tape, but I retired it from inner-tube duties) because there was a tear in the bit where the valve attached - I think because I was missing the little securing nut on the outside.

 

[raleighnut]

Unless it's the valve damaged, I will change tubes (checking tyre) and patch mine when I get home.
The only one I've struggled to patch is this one.
View attachment 57875

I think that's a gonner

 

[Dan B]

I throw the nuts away: I don't think they serve any purpose

 

[KneesUp]

I throw the nuts away: I don't think they serve any purpose

I read that on here somewhere so I did the same, and within two weeks I had a tear near the valve. Could be coincidence if you don't have the same problem.

 

[Diggs]

Even I don't patch if it's near the valve - I threw one away last week (well, I kept it to use as padding under my bar tape, but I retired it from inner-tube duties) because there was a tear in the bit where the valve attached - I think because I was missing the little securing nut on the outside.

Yep so many other uses, bar padding, chainstay protectors, offcuts for protection/grip for light fittings.
People like @beer_babe on Twitter use them to make some nice kit too

 

[youngoldbloke]

I read that on here somewhere so I did the same, and within two weeks I had a tear near the valve. Could be coincidence if you don't have the same problem.

I use michelin tubes - smooth unthreaded valves so no nut - no problems. And while you're at it throw the dustcaps away too once youv'e put the tube on the wheel.

 

[vickster]

Aha - I tend to avoid riding over obstacles I can see - that'll be the difference

A brick?!

Yes I think so, hard to avoid at 20mph when the kerb is one side and heavy traffic the other...it may also be that I simply didn't see it (at all/in time)!

 

[Gravity Aided]

I throw the nuts away: I don't think they serve any purpose

I think the nuts hold the valve stem where it should be. The Presta valve seems more delicate in all respects than the Schrader, so I figure a little insurance may go a long way.

 

[youngoldbloke]

I think the nuts hold the valve stem where it should be. The Presta valve seems more delicate in all respects than the Schrader, so I figure a little insurance may go a long way.

They are really not necessary. As I said I use Michelin tubes, both butyl and latex, and neither have threaded stems or nuts. The valves seem to know their place - the hole in the rim !

 

[Dan B]

I think the nuts hold the valve stem where it should be. The Presta valve seems more delicate in all respects than the Schrader, so I figure a little insurance may go a long way.

100psi of air inside the tube will quite effectively hold it against the inside of the tyre wall, and if the tube can't move the valve isn't going to go wandering off either :-)

I've heard stories of tyres shifting under emergency braking causing the tube to slide round so that the valve rips, which I guess is a possible failure mode and I suspect more likely at lower pressures: I'm not sure in this case if having the valve secured in the valve hole is going to make it more or less likely ... do you think it would anchor the whole tube or it would just cause it to stretch and rip? I guess both are possible

 

[Peteaud]

If i am out and its nice weather, then a Park or Topeak instant patch. If its wet, new tube and repair old one later at home, with said instant patch.

 

[screenman]

It could of course be that the person in question had worn or thin/lightweight tyres, thus making punctures more likely.

I abhor the approach that says

'of course it can be easily and cheaply repaired at home with minimal equipment and be safely used for a long time, but sod it, they're dead cheap because they're made by people getting a pitiful wage and shipped half way around the world in bulk - and it's not like there is a finite amount of natural resources - so I'm going to throw away this serviceable item so it can lie in the ground for hundreds of years and use another'

Repair them - they're designed to be repaired.

My life may depend on my tyres and tubes, like most on here I often hit 40mph downhill and I want to be sure I have quality rubber underneath me.

I have never as far as my memory goes back thrown out an old tube, I use them for may things.

These people on pitiful wages, they are grateful for any wage, personally I wish they were paid more, but you only have to read this forum to see a lot of people buy on price alone, I am not one of those people.

As for wasting resources, how many go into your puncture outfit, patches, glue, tin,etc. You have me very wrong.

 

[Nigelnaturist]

My life may depend on my tyres and tubes, like most on here I often hit 40mph downhill and I want to be sure I have quality rubber underneath me.

I have never as far as my memory goes back thrown out an old tube, I use them for may things.

These people on pitiful wages, they are grateful for any wage, personally I wish they were paid more, but you only have to read this forum to see a lot of people buy on price alone, I am not one of those people.

As for wasting resources, how many go into your puncture outfit, patches, glue, tin,etc. You have me very wrong.

Pays the same pitiful wages but to others, the only thing that can't be recycled is the glue as that is used. It goes use, re-use, recycle.

 

[Gravity Aided]

100psi of air inside the tube will quite effectively hold it against the inside of the tyre wall, and if the tube can't move the valve isn't going to go wandering off either :-)

I've heard stories of tyres shifting under emergency braking causing the tube to slide round so that the valve rips, which I guess is a possible failure mode and I suspect more likely at lower pressures: I'm not sure in this case if having the valve secured in the valve hole is going to make it more or less likely ... do you think it would anchor the whole tube or it would just cause it to stretch and rip? I guess both are possible

I'm betting on it anchoring, although I've never seen such a situation come up either. I'm of the opinion that a tube can do a whole lot of stretching. If Michelin chooses to have their tubes without threaded stems, that is their choice. They are not mine. But I do like their tires quite well, both bicycle and auto.