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grinding/enlarging a 22.2 stem clamp to fit 25.4 bar clamp

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grinding/enlarging a 22.2 stem clamp to fit 25.4 bar clamp Empty grinding/enlarging a 22.2 stem clamp to fit 25.4 bar clamp

Post by Jonesy on Tue Oct 23, 2012 3:38 pm

so there it is... I have a stem that has a 22.2 clamp size... very blocky BMX style clamp,. I am considering grinding/boring it out to fit a 25.4 handlebar.

Any of y'all ever try this?
How did it work out for you?
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grinding/enlarging a 22.2 stem clamp to fit 25.4 bar clamp Empty Re: grinding/enlarging a 22.2 stem clamp to fit 25.4 bar clamp

Post by eurotrash on Tue Oct 23, 2012 5:14 pm

If you have a milling machine, a Kurt vise, and a boring bar with the appropriate set-up instruments, it is a snap!

I once used a very expensive Silver & Demming drill bit to open up a BMX brake lever to fit road bars. The result was not my finest work. I wouldn't do it again, and definitely not on a stem.

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Post by PB Matrix on Tue Oct 23, 2012 10:33 pm

How about a 1" drill bit some how or another?
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Post by spookyload on Tue Oct 23, 2012 10:57 pm

Consider the cost of failure if you do it wrong. Spend the money on a stem. That is not a component you want to fail.
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grinding/enlarging a 22.2 stem clamp to fit 25.4 bar clamp Empty Re: grinding/enlarging a 22.2 stem clamp to fit 25.4 bar clamp

Post by Jonesy on Wed Oct 24, 2012 5:29 am

spookyload wrote:Consider the cost of failure if you do it wrong. Spend the money on a stem. That is not a component you want to fail.
Taking a second look at the stem, and the amount of spare material between the current clamp and the bolt holes, this is the conclusion I've come to as well.
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Post by MJ on Wed Oct 24, 2012 7:45 am

Just buy some hot pink BMX bars, 22.2.
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Post by Zenkem on Wed Oct 24, 2012 7:51 am

I wouldn't do it!!!

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Post by Jonesy on Wed Oct 24, 2012 9:55 am

MJ wrote:Just buy some hot pink BMX bars, 22.2.
No, the bars are purple, only the frame is hot pink.... Think I'll get an electric blue stem to match the crankset and the brake, since I can't find a line green stem with 25.4 clamp.
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