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Tubeless valves


By BIGnige - Posted on 19 February 2015

NB: Originally posted elsewhere on the Global Riders Network and appears via syndication.

Guys any thoughts on the best valves to use for a tubeless rim?
I'm having a hard time sealing the Shimano ones I've put in my new LB rims.
They seem to move around a lot in the hole.

[Mod. moved to MTB gear]

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Trick is make sure when you make a hole in your rim tape to push the valve through it is a small hole/tight fit. If there is any leakage then it will soon block up when you add your sealant.

Thanks for the reply. As the rim bed is totally sealed with no spoke holes I haven't even used rim tape...maybe I should just over the valve.

I just got back from my LBS getting two new tyres fitted. 1 of my wheels had a valve like in your pic, with the square plug. They swapped it out for the newer round plug typer valve which apparently seals easier/better.

And it is red and black so I should go a bit faster now.

Cheers Jake....should be good for a sub 30 round the dam now then. Eye-wink

Use Stans, best ever.

I converted my rims to tubeless using stans valve stems. $20.00 and they've never been an issue.

Drop buy Nige i,ve got 2 spare Stans stems you can try to see if they help

The best for dish channel rims.

The square plug valves work best in UST style rims where the channel is square in cross s3ction.

The removable cores in Stans stems rock.

As per hawkeye , the photo is of a mavic UST valve, it is specific to UST channelled rims, it's not suitable for std rims - use the stans ones

You'll never use them again anyway.

Just leave as much rubber as you need to suit your rim, better and cheaper.

Nice idea but how do you top up sealant? I wouldnt want a tubeless setup without removable valve cores but I guess Im just lazy Eye-wink

Not having removable valves is a PITA when running tubeless.

Actually I didn't have any issues getting sealant in through the valve even though the core isn't removable. Just unscrewed it as far as it would go and used a tight fitting clear plastic pipe.

a lot of tubes have removable valve cores

a lot of tubeless valves haven't got removable cores

Smiling

If you have to buy stuff anyway why wouldnt you buy the best solution to your problem but the second best one?

The expensive 'tubeless' valves fail.

I find it better to break a small section of the bead when adding sealant that way I can check what's in there - amount, condition etc.

I still crack the bead from time to time to check the condition of the sealant. The Rubena sealant I was using as part of their tyre review last year was rather ordinary, leaving latex webs all over the place which stopped the sealant from moving about freely.

If I hadn't cracked the bead I'd have had no idea. So I pulled the tyre off the rim and stripped it all out.

Where removable valves really help is in being able to get large volumes of air in quickly to help seat the bead.

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