Road Cycling - Stem Question

Bikeforums.net is a forum about nothing but bikes. Our community can help you find information about hard-to-find and localized information like bicycle tours, specialties like where in your area to have your recumbent bike serviced, or what are the best bicycle tires and seats for the activities you use your bike for.




View Full Version : Stem Question


Brahman Bull
09-08-03, 02:09 PM
I am in the market for a new stem. My Deda bars are 26.0 in diameter but the stem I want has a clamp diameter of 25.8, will this work? Or do I need a stem in which the clamp diameter is 26.0? Thanks for your help!


carlee
09-09-03, 12:12 AM
well, i think it will work but it will put more stress your bars and stem more than normally since there will be less contact.. there will be less contact on the center of the faceplate. this may cause premature wear.

But it will work, i think.. But i wouldn't do it.:)

Jay H
09-09-03, 08:37 AM
Can't find another mfgr who makes the length and angle in a 26mm clamp diameter?

If you really want a stem in the 26.0 size, there are custom framemakers who could make a custom stem for you but of course, it would cost you $$$. I know when I got my Seven, they made a custom Ti stem for it.

Jay


Bruco
09-09-03, 08:48 AM
My Ritchey WCS stem does not seem to match my Ritchey Pro road bar. The clamp is a bit too small; it does not close 100%: there is a small gap between the stem cap and the stem itself. I have asked this forum about this and received reassuring answers. Maybe the same would apply to your 25.8-26 combo...

Jonny B
09-09-03, 09:41 AM
You may not think it, but that 0.4mm will make a difference. Maybe not a helluva big difference, but if you go ahead with it, don't be surpirsed if you bars crack or get dented. I'd recommend you either find another stem with a 26mm clamp, another pair of bars with 25.4mm tube, or go to a competant machine shop and have them mill out the clamp area to 26mm.

Bruco
09-09-03, 09:47 AM
Originally posted by Jonny B
or go to a competant machine shop and have them mill out the clamp area to 26mm.

Wouldn't that in fact weaken the clamp?

Xavier
09-09-03, 10:11 AM
Shouldn't have a problem. Many people years back mixed these with no problems. About 10 years back 26,0 and 25,8 were the ones sold most.

Also 25,4 and 26.4 were made but no longer made.

Go ahead and try it.