How to bore a MTB Shifter to Fit on a Dropbar?
11-30-18, 07:44 AM
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How to bore a MTB Shifter to Fit on a Dropbar?
So want to put the Shimano SLX 7000 shifter on dropbars. Everything is bought.
Being a MTB shifter the clamp is bored for 22.2mm but the drops are 23.x.
Removing 1.xmm of ALU cant be that hard can it or am I missing something.
I was going to try just using sandpaper on my finger to start with.
Being a MTB shifter the clamp is bored for 22.2mm but the drops are 23.x.
Removing 1.xmm of ALU cant be that hard can it or am I missing something.
I was going to try just using sandpaper on my finger to start with.
11-30-18, 07:57 AM
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It looks like you should be able to take off a half mm of material, and still be fine. Don't take off too much. The strap may almost reach as-is if you used a longer bolt. Anyway, you will want a tight fit.
I'd probably use a round file or a small drum sander.
Have you seen the Microshift Mega 11-Speed MTN Bar End Shifters?
https://www.microshift.com/en/product/bs-m11/
I'd probably use a round file or a small drum sander.
Have you seen the Microshift Mega 11-Speed MTN Bar End Shifters?
https://www.microshift.com/en/product/bs-m11/
11-30-18, 08:32 AM
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Sandpaper wrapped on a wood dowel will probably work faster and do a more even metal removal job.
11-30-18, 02:45 PM
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Just did a search, and it appears that inexpensive aluminum 25.4/22.2 drop bars are available. Use shims from a beer can at the stem and you're in business.
If you go the sanding route, wear eye protection and a respiration mask.
If you go the sanding route, wear eye protection and a respiration mask.
11-30-18, 05:12 PM
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You are removing 1/2 the differences in diameters , the measurement is a radius..
I use bar end shifters on all my drop bar bikes,
Trekking bars are 7/8'', 1" center,, they use MTB/straight bar controls..
also offer a lot of variety in hand holds..
...
I use bar end shifters on all my drop bar bikes,
Trekking bars are 7/8'', 1" center,, they use MTB/straight bar controls..
also offer a lot of variety in hand holds..
...
Last edited by fietsbob; 11-30-18 at 05:15 PM.
12-01-18, 07:09 AM
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