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Tubeless question

Old 07-07-09, 12:47 PM
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bfromcolo
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Tubeless question

I am looking at buying a used bike. It's a 03 model with low miles that appears to have sat for a while. For rims and wheels it is factory spec with:

Rims Mavic Crossmax SL
Tires Hutchinson Python Tubeless

I have never dealt with tubeless tires before, in tuning the bike up is there anything recommended for a tubeless setup like this?

Thanks
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Old 07-07-09, 01:12 PM
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Originally Posted by bfromcolo View Post
I have never dealt with tubeless tires before, in tuning the bike up is there anything recommended for a tubeless setup like this?
In tuning the only difference may be running a lower pressure than a tubed tire.

In riding...carry a spare tube.

One of the guys at QBP, probably the USA's largest bike parts distributor asked me, "Ya know what UST stands for? Use Standard Tube!" Now, if someone like that dealing with thousands of product issues shows a lack of confidence in the UST system...what does that say?

There are a few caveats about the tubeless standard:

It may or may not be any more puncture resistant than a standard tubed wheel.
Tubeless tires typically weigh equal to or even more than their non-UST equivalents + tube.
It may be harder to find a puncture in the tire than in the tube.
The fix for either is still a patch or replacement tube.
The tire is often more difficult to remove due to the bead shelves in a UST rim.

My own take on tubeless is to run the Stan's No-Tubes system, or at the least run a sealant. With Stan's one can save rotating weight by using a lighter non-UST tire, while gaining puncture-resistance and even instant puncture repair. The drawbacks are that the Stan's system requires maintenance replacement of the sealant, issues with sealing on some rim/tire combos, the potential to shear the bead loose under hard riding conditions and losing all the air without puncturing (can't happen with a tube)...and once again, the universal fix for issues on the road or trail is to install a standard tube.
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Old 07-07-09, 04:16 PM
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as far as maintenance you should put in some sealant in the tires once in a while as the tire absorbs some of it and you lose some through punctures

but if you really dont want to deal with it put some tubes in there and dont worry about it
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