Bicycle Mechanics - Tubeless punctures.

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Bokkie
08-28-02, 07:48 AM
OK. I'm stoopid. First time I ever owned a tubeless tire and I got a flat at lunch time. Inner tubes are easy. A bucket of water will show you where the puncture is.

Not all tubeless punctures are the same. I mean you ain't going to see a yellow post-it note that says, 'Hi I'm the hole your'e looking for.'

What do you do if you can't see where the puncture is? I have not yet taken the tire off the rim, but a quick inspection shows nothing obvious has punctured the tire or is sticking in it. What now? Where do I start?

SantaHul
08-28-02, 10:01 AM
Have you ever heard of osmosis? Maybe that would explain your puncture.
KleinMp99
08-28-02, 10:40 AM
Originally posted by Bokkie
What now? Where do I start?

Just find it!!! AHHHH!!!!!! It might not be a puncture....it could be the valve.....unscrew it, and put some grease or something around the rubber seal thing......if its a fast leak you should be able to FEEL THE AIR Coming out, if its slow then......just figure it out.

Dirtgrinder
08-28-02, 12:39 PM
I make a solution of dish soap and water and put it on the tire with a sponge. It will bubble up really foamy where the puncture is. Also check the seat between tire and the rim.
Bokkie
08-29-02, 01:46 AM
These things I shall do. So far, I've done but 10 miles on the bike. I've fallen off once (pox on Mr.Shimano and his PD-M545 pedal) and I have a flat tire.

I think it is time for stabiliser wheels.:D

Spoke to the lbs, and they've given me an inner tube to fit in the tire.

Cars have been using tubeless for years, so I wonder how they look for X-marks-the-spot if there is no immediate obvious point of entry by a foreign object?
joeprim
08-29-02, 12:05 PM
Inflate the tire and either stick it in water or rub soap-Water on it. The bubbles will indicate the leak. Tire or valve leak. Thats how they find them in the tubless tires the manywheeled things use.
Joe
:beer:
toolfreak
08-31-02, 01:34 PM
I`ve worked as a carmechanic for years and yes we did use the water and soap to find the leaks in the tire.
Probably the best and simple solution
JaredMcDonley
09-01-02, 02:53 PM
HEHEHE i use a solution of glass clearner and some water. I have found that you will see the bubbles show up faster and bigger. But for the most part both will work.

Jared

Sorry to hear about your problem :)