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Old 04-15-11, 04:25 PM   #1
jharley
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Handlebar shim won't fit around handlebar bends? (AKA am I an idiot?)

I just picked up a 25.4 to 31.8 handlebar shim http://www.universalcycles.com/shopp...03&category=43 for my wife's road bike.

The shim itself has a split that should allow some flex, but the thing is quite rigid and its like 4-5cm long and will not fit around the bends on the handlebar drops no matter how hard I try to force it. How the hell am I supposed to install this thing?

Thanks for any input.
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Old 04-15-11, 04:32 PM   #2
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Well wait, are you sure your drop bars are 25.4? There are some exceptions but usually drop bars are 26.0. Also I think that shim was never intended to be threaded around the bends of drop bars... it's meant for a fairly straight mountain bar.

Return it and just buy the right stem.
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Old 04-15-11, 04:34 PM   #3
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it was probably designed by someone that assumed it was going to be used on a straight bar.... but, 4/5 cm is more that you need, sooo, i would probably cut some off until i could get it on without breaking it.

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Old 04-15-11, 04:37 PM   #4
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If you are convinced that you have 25.4 drop bars then just cit it lengthwise and reassemble the pieces on the bar's clamp area.

done
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Old 04-15-11, 04:41 PM   #5
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Quote:
Originally Posted by Re-Cycle View Post
Well wait, are you sure your drop bars are 25.4? There are some exceptions but usually drop bars are 26.0. Also I think that shim was never intended to be threaded around the bends of drop bars... it's meant for a fairly straight mountain bar.

Return it and just buy the right stem.
So in other words, I am an idiot.

I just cut the thing lengthwise into two halves and placed it in the clamp, seems to work ok.
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Old 04-15-11, 04:43 PM   #6
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re-cycle's idea is better than mine..

but you could just go ahead a break it. then it would be obvious that you can reassemble it on the bar after the bar is in the stem and slide it between the clamp and the bar. no cutting!

huey
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Old 04-15-11, 05:11 PM   #7
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I THINK I understand what you are talking about but... doesn't matter. When it comes to shims, I will give you some sure-fire simple advice.

Get yourself three plastic drink bottles all with different material thickness. Usually, Walmart cheap-0 water bottles are the thinnest and Coke bottles are the thickest.

Cut the shims in strips from the plastic bottles to suit your needs. Works on handlebars, seat posts, etc and you won't have any squeak sounds like you do with metal shims.

Cut them long so they are easy to handle as you out the shim and bike parts together, then trim off the excess when you have everything in-place and tightened down.

Enjoy

Last edited by mike; 04-15-11 at 05:14 PM.
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