tubeless tires

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Skunk

Post subject: tubeless tires

Posted: Sat Mar 31, 2012 1:29 am

Joined: Wed Mar 08, 2006 7:23 am
Posts: 1225
Location: bay area

I want to run tubeless tires on 68mm enves. I'm using an enve valve exteneder with a stans valve. The instructions say to use the valve nut to secure the valve. With the extender there's nothing to thread the nut onto. Will the valve still seat properly if I don't use the nut?

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Geoff

Post subject: Re: tubeless tires

Posted: Sat Mar 31, 2012 3:06 am

Joined: Sat Dec 13, 2003 2:25 am
Posts: 3906
Location: Canada

Not in a million years. You need to crank it down pretty well to get a good seal.

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thisisatest

Post subject: Re: tubeless tires

Posted: Sat Mar 31, 2012 3:16 am

Shop Owner

Joined: Sat Jun 13, 2009 4:02 am
Posts: 1836
Location: NoVA/DC

stans sells tufo-style extenders that place the valve core outside the rim. theirs in particular is also threaded on the outside, to work with a valve nut. it's the only one of its type that ive seen.
ive also successfully run an actual tufo extender through an m6 die, but it was a pain.

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Skunk

Post subject: Re: tubeless tires

Posted: Sat Mar 31, 2012 6:59 am

Joined: Wed Mar 08, 2006 7:23 am
Posts: 1225
Location: bay area

thisisatest wrote:

thanks, I'll look for the stans extenders

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cwdzoot

Post subject: Re: tubeless tires

Posted: Sat Mar 31, 2012 2:07 pm

Shop Owner

Joined: Sun Feb 20, 2005 5:17 am
Posts: 314
Location: Greenville, SC USA

As far as I understand this is the reason Campagnolo/Fulcrum postponed the 2 way fit Bullet wheels.

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edmundo

Post subject: Re: tubeless tires

Posted: Sat Mar 31, 2012 2:47 pm

Joined: Thu Oct 22, 2009 2:04 pm
Posts: 96
Location: UK

You definitely need a valve nut and thisisatest's suggestion above should do the trick. But you'll be screwing that nut down on your nice carbon rim. I think this should be OK as my experience with these valves is they need to be screwed down firmly, but finger-tight only. You don't need tools.

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Geoff

Post subject: Re: tubeless tires

Posted: Sun Apr 01, 2012 8:43 pm

Joined: Sat Dec 13, 2003 2:25 am
Posts: 3906
Location: Canada

Put a rubber 'O'-ring and a thin metal washer between the rim and locknut. SimpleEasy.

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natiedean24

Post subject: tubeless tires

Posted: Sun Apr 01, 2012 9:24 pm

Joined: Wed Jun 10, 2009 2:16 pm
Posts: 307
Location: Austin, Texas

Good suggestion Geoff. I would do that or maybe you could use a nylon washer.

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