Author Topic: Fixing punctures  (Read 418 times)

velosam

  • '.....you used to be an apple on a stick.'
Fixing punctures
« on: November 22, 2020, 03:07:37 pm »
Riding in the damp doesn’t suit Brompton.  I have just tried fixing a puncture and each tint I put the tire back,  I get a new one.

I have been through the tire 3 times now and there is nothing as far as I can tell.

Very frustrated- what should I do next?

Before anyone asks, no it’s not a Marathon or M+

Thanks

quixoticgeek

  • Mostly Harmless
Re: Fixing punctures
« Reply #1 on: November 22, 2020, 03:13:33 pm »
Riding in the damp doesn’t suit Brompton.  I have just tried fixing a puncture and each tint I put the tire back,  I get a new one.

I have been through the tire 3 times now and there is nothing as far as I can tell.

Very frustrated- what should I do next?

Before anyone asks, no it’s not a Marathon or M+

Thanks

Where are the holes? If you line the tyre logo up with the valve each time, you can use this as a reference for matching hole in tube to hole in outer.

Good luck.

J
--
Beer, bikes, and backpacking
http://b.42q.eu/

Kim

  • Timelord
Re: Fixing punctures
« Reply #2 on: November 22, 2020, 03:22:21 pm »
And indeed is the hole actually on the outer surface of the tube?  If not, it could be the rim tape, some foreign object rattling around, or a manufacturing defect in the tube.
Careful, Kim. Your sarcasm's showing...

Re: Fixing punctures
« Reply #3 on: November 22, 2020, 05:05:44 pm »
Qg's suggestion is a good one and what I'd do.    Even on small wheels the area of tyre that needs to be inspected is huge; the tread  is over 1.25m long, and narrowing down the area where there might be something stuck in the tyre is a good move.

It is also possible for the tube to get pinched or the valve to be defective. If you have the twinwall Brompton rims you need to use good quality rim tape (eg velox); tapes that are thin, stretchy, or can moved around can give you incessant punctures.

cheers

citoyen

  • Occasionally rides a bike
Re: Fixing punctures
« Reply #4 on: November 22, 2020, 06:07:53 pm »
Riding in the damp doesn’t suit Brompton.  I have just tried fixing a puncture and each tint I put the tire back,  I get a new one.

Are you patching the tube or fitting a new one each time?

If the former, are you confident the repair is sound?

Quote
what should I do next?
...it’s not a Marathon or M+

I think you’ve just answered your own question. ;)
"The future's all yours, you lousy bicycles."

velosam

  • '.....you used to be an apple on a stick.'
Re: Fixing punctures
« Reply #5 on: November 22, 2020, 07:57:15 pm »
Had it checked maybe a rim tape issue.

Going to put some insulating tape around the rim.

Thanks all

Kim

  • Timelord
Re: Fixing punctures
« Reply #6 on: November 22, 2020, 08:06:46 pm »
Going to put some insulating tape around the rim.

A reasonable short-term bodge, but beware that it tends to stretch over time.
Careful, Kim. Your sarcasm's showing...

LittleWheelsandBig

  • Whimsy Rider
Re: Fixing punctures
« Reply #7 on: November 22, 2020, 08:42:35 pm »
Irrelevant as it will be applied over Velox.
Wheel meet again, don't know where, don't know when...

Kim

  • Timelord
Re: Fixing punctures
« Reply #8 on: November 22, 2020, 08:50:13 pm »
Irrelevant as it will be applied over Velox.

Ah, good idea.
Careful, Kim. Your sarcasm's showing...