Try this site for valve extender sizing. The extenders pictures I believe are tufo
http://www.worldclasscycles.com/valve_e ... sizing.htm
spaniardclimber wrote:I bought a used set of lightweight and they come with very short valve extensions, Im almost unable to inflate the tubulars. Im going to order tufo 160 and Im going to get a set of valve extensions too, which is the valve extension recommended length for lightweights?
Try and get one of the brass extensions that Mavic ships with their Cosmic Carbones (The best part of that wheel, IMO )
I got mine for free at a Mavic Promo booth
I had Zipp's also they suck very hard.
-so long that valve may crack, least I had with Michelin alloy valve cracked in pouring rain when I had flat on clindher 404's...
-so thin that most pumps leak
-they must be inserted permanately or they leak
-you can't thighten valve after pumping...
Never for me.
My friend have Mavics, they looks similar but heavy brass...
After installing Tufos, they just work like long valve, nothing less.
Tufos breaking??? I have 2004' brass models and they are very solid...but bit heavy so I'm changing them to 2005' alloy models.
I wrote Tufo alu - not brass.
This summer I bought 4 of the 40mm Tufo alu and I agree that as long as they last they are better than both Zipp and HED because you can close the valve and they are also so light so that they dont get the wheel out of balance, however of the 4 that I bought one broke while pumping (with a standing pump, I never use a normal hand pump). One broke while changing a tyre and one broke while riding. FYI I only use them on LWs and only with Veloflex tubbies. I the picture I have marked where they are prone to breaking. At that point the alu wall is really thin (1mm or even less) - I guess that can even be seen pretty clearly in the picture.
- valve_ext_40mm_rs.jpg (10.28 KiB) Viewed 934 times
Link to my 11.5lb Neo Ultimate
The pictures show first of all the extender with the plastic key. I advise to get one of those. The opening can be used to screw on the extender and the hole can be used to srew on the valve. But even more important to srew off the valve in case of a flat and you have to punt the Tufo sealant in
You have to screw the valve off for this, check the Tufo website
Second picture is the extender on a Tufo S3 < 215 gr tire. You screw it almost all the way in!! It doesn't stick out as much as seen on other pictures.
Third picture is how much the valve sticks out a Lightweight wheel with this combo. Not much, but enough and the less the better
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