48mm valves for 38mm rims?

Neale1978
Posts: 484
Hey,
Will be getting some new wheels in a few weeks which will have 38mm deep clincher rims. Will tubes with 48mm long valves be about right?
Cheers
Will be getting some new wheels in a few weeks which will have 38mm deep clincher rims. Will tubes with 48mm long valves be about right?
Cheers
0
Comments
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60 would be better. Some pump heads need more than 10mm to connect.Yellow is the new Black.0
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38 normally includes the brake track, so the actual depth of the rim from the rim bed is less than that... it might be enough, but I would go for 60 mm, just in case your pump head needs more roomleft the forum March 20230
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Good point that about quoted rim depth.Yellow is the new Black.0
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Will go with 60mm then to be sure. Cheers0
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38mm clinchers, which ones did SMIDSY & UGO recommend?I'm sorry you don't believe in miracles0
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Using Mavic Ultimate tubulars (about 45mm deep I think) with Vittoria CX's I just use the standard valve - this gives me about 8mm of valve showing, to which I screw on an extension when I pump them up.
My can of sealant I carry has the extension pre-screwed into it, so I can use that if I get a problem.
Not sure if this is the best way about it, but it's worked well for the last 2 years and keeps the wheel aero (no point having bladed spokes if you have a huge valve extension spinning around on the fastest part of the wheel!)
I don't like having an extension permanently screwed on inside the rim, as I've had problems with these leaking in the past (with 50mm rims).0 -
SloppySchleckonds wrote:38mm clinchers, which ones did SMIDSY & UGO recommend?
I didn't...but I am sure Mavic do some.Yellow is the new Black.0