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deore xt 7spd thumbie; bar clamp repair solutions

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deore xt 7spd thumbie; bar clamp repair solutions

Old 05-24-19, 01:42 AM
  #1  
thook
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deore xt 7spd thumbie; bar clamp repair solutions

long time ago, i filed out the clamp to fit it onto drop bar. well, yeah....it broke trying to remove it. <<<dumb, dumb>>> so, i wondered if anyone else has ever broken the clamp and came up with delightful solution to repair....since the shifter still works....rather than buy another? have you seen what peeps are asking for those things on ebay? geez. i'd rather glue the thing onto the bar (mtb) vs paying that

anyway, not holding my breath, but never hurts to ask

yep...i've searched the webz already

thanks!!
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Old 05-24-19, 03:01 AM
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Originally Posted by thook View Post
long time ago, i filed out the clamp to fit it onto drop bar. well, yeah....it broke trying to remove it. <<<dumb, dumb>>> so, i wondered if anyone else has ever broken the clamp and came up with delightful solution to repair....since the shifter still works....rather than buy another? have you seen what peeps are asking for those things on ebay? geez. i'd rather glue the thing onto the bar (mtb) vs paying that

anyway, not holding my breath, but never hurts to ask

yep...i've searched the webz already

thanks!!
I fixed a shifter by riveting it onto a hose clamp!
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Old 05-24-19, 03:17 AM
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If you can find the stamped steel clamps from the lesser Deore shifter they work. That's usually easier to stretch over the drop bar too. I think you would also need the little barrel adjuster anchor thing.

https://www.loosescrews.com/product/...ifter-bracket/

https://www.loosescrews.com/product/...ifter-bracket/
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Old 05-24-19, 10:53 AM
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Originally Posted by Trevtassie View Post
I fixed a shifter by riveting it onto a hose clamp!
+1
Nice!
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Old 05-24-19, 01:59 PM
  #5  
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Tie one on!

Tie wrap? Not elegant, but functional!
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Old 05-24-19, 02:06 PM
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take parts from the left one and replace the left one with a modest friction "falcon" shift lever..
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Old 05-24-19, 09:19 PM
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Originally Posted by wesmamyke View Post
If you can find the stamped steel clamps from the lesser Deore shifter they work. That's usually easier to stretch over the drop bar too. I think you would also need the little barrel adjuster anchor thing.
Yeah, the regular Deore, DX or XT, six speed or seven, will work.
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Old 05-25-19, 12:13 AM
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thook
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thank you all, kindly! i don't have time to respond individually, but will tomorrow. it's given some things to explore, for sure. except the hose clamp. a bit too kludge for me,...lol
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Old 05-25-19, 09:03 PM
  #9  
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Originally Posted by Trevtassie View Post
I fixed a shifter by riveting it onto a hose clamp!
i did think of that. my idea, though, was maybe some epoxy or jb weld. but, i'd rather have a more elegant solution. thank you, though
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Old 05-25-19, 09:04 PM
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Originally Posted by wesmamyke View Post
If you can find the stamped steel clamps from the lesser Deore shifter they work. That's usually easier to stretch over the drop bar too. I think you would also need the little barrel adjuster anchor thing.

https://www.loosescrews.com/product/...ifter-bracket/

https://www.loosescrews.com/product/...ifter-bracket/
now, that is what i'm after! wow...cool. thank you much!
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Old 05-25-19, 09:06 PM
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Originally Posted by cannonride15 View Post
Tie wrap? Not elegant, but functional!
no sir...i don't believe it would stay very secure under more aggressive riding. i could see it swiveling around under shifting influencing my mood in a less than joyful way...lol
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Old 05-25-19, 09:09 PM
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Originally Posted by fietsbob View Post
take parts from the left one and replace the left one with a modest friction "falcon" shift lever..
neh...i'd like to keep the shifters i have paired and it looks like i can from wesmamyke's post. i should add i'm not looking to reinstall these on drops, again. at the time i did it, it was my only solution for indexing shifter in the rear not being able to buy anything. now that i do have road shifters, i want to use the thumbies on a genuine atb intended application

thank you all so much for replying. those steel clamps look to be just the ticket!

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Old 05-25-19, 09:51 PM
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Plan A; find another complete one on eBay ..
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Old 05-26-19, 05:27 AM
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Originally Posted by thook View Post
long time ago, i filed out the clamp to fit it onto drop bar. well, yeah....it broke trying to remove it. <<<dumb, dumb>>> so, i wondered if anyone else has ever broken the clamp and came up with delightful solution to repair....since the shifter still works....rather than buy another? have you seen what peeps are asking for those things on ebay? geez. i'd rather glue the thing onto the bar (mtb) vs paying that

anyway, not holding my breath, but never hurts to ask

yep...i've searched the webz already

thanks!!
First, there is a set of clamps on Fleabay right now.

https://www.ebay.com/itm/Vintage-Shimano-XT-SL-M732-Thumb-Shifter-Bases-Left-and-Right/273862825034?

I was thinking of buying it but it seems like you need it more.

Second, I have repaired one by drilling and tapping. I used an auto shop so it uses an imperial bolt.

I was JRA when it broke, right in front of an auto machine shop so I walked in and inquired about a repair. At first they didn't want to work on a bike, but when I told them it was discontinued and vintage, it got their interest. One of them commented that he went to school with a girl named "Breezer."

They didn't have a bottoming tap so I asked if a broken tap will work. I dont remember how they did it but they did not bore through.

Twenty minutes later I was riding again.

Last edited by DorkDisk; 05-26-19 at 05:42 AM.
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Old 05-26-19, 09:56 PM
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thook
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Originally Posted by fietsbob View Post
Plan A; find another complete one on eBay ..
that's plan b, man. again, the prices people are wanting! and, then there's if an auction turns up with just the rear/right shifter. there's usually more left/front shifters as solo.

with patience, likely something (either just the right or both) that'll turn up at what i'd be willing to give, but i the i already have shifters that are perfectly fine. it's just the clamp broke in half. :/ otoh, never does hurt to have spares. indexing does wear out!! so, yeah...plan b
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Old 05-26-19, 10:02 PM
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Originally Posted by DorkDisk View Post
First, there is a set of clamps on Fleabay right now.

https://www.ebay.com/itm/Vintage-Shimano-XT-SL-M732-Thumb-Shifter-Bases-Left-and-Right/273862825034?

I was thinking of buying it but it seems like you need it more.

Second, I have repaired one by drilling and tapping. I used an auto shop so it uses an imperial bolt.

I was JRA when it broke, right in front of an auto machine shop so I walked in and inquired about a repair. At first they didn't want to work on a bike, but when I told them it was discontinued and vintage, it got their interest. One of them commented that he went to school with a girl named "Breezer."

They didn't have a bottoming tap so I asked if a broken tap will work. I dont remember how they did it but they did not bore through.

Twenty minutes later I was riding again.
auction is over...lol! someone grabbed'em quick like. i'd have done that in a heartbeat, though!! so, thanks

what part of the clamp did you tap, anyway? the base part that shifter actually fastens to? or where the band tightens. i can see either scenario with a tap repair. that'd be a simple fix. but, it's clamp band that broke on mine. not nearly enough material there to do something like that that i can see.

what's "JRA" mean?
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Old 05-27-19, 05:55 AM
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Originally Posted by thook View Post
auction is over...lol! someone grabbed'em quick like. i'd have done that in a heartbeat, though!! so, thanks

what part of the clamp did you tap, anyway? the base part that shifter actually fastens to? or where the band tightens. i can see either scenario with a tap repair. that'd be a simple fix. but, it's clamp band that broke on mine. not nearly enough material there to do something like that that i can see.

what's "JRA" mean?
Oops, I misread and assumed that you stripped the clamp threads, which is pretty common.

As other indicated, the 6sp ones cost way less and are compatible. The 6sp XT has identical clamps as 7sp AFAIK, I recently bought a coplete 6 sp set just for the clamps at about 15 bucks.

JRA=Just Riding Along
From the industry end it means, "BS"

because I did overtighten it, it just failed on a ride. But it is notoriously soft
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Old 05-27-19, 12:56 PM
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thook
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Originally Posted by DorkDisk View Post
Oops, I misread and assumed that you stripped the clamp threads, which is pretty common.

As other indicated, the 6sp ones cost way less and are compatible. The 6sp XT has identical clamps as 7sp AFAIK, I recently bought a coplete 6 sp set just for the clamps at about 15 bucks.

JRA=Just Riding Along
From the industry end it means, "BS"

because I did overtighten it, it just failed on a ride. But it is notoriously soft
yeah, aluminum is sorta fragile that way :/

to clarify, i'm not hard set on having the original type alloy XT clamps. so, yeah...6spd clamps...the steel ones ...would work just fine. there is a set of deore 6spd shifters going for $29 BIN free ship right now. thing is, again, i was originally trying to keep my expense for a fix to a bare minimum to nil. so, i gotta restrain myself...lol!

i think the answer/solution i was looking for has been fulfilled. so, at the point i'm ready to build the bike with my shifters, i'll either go for those clamps wesmamyke pointed out or see what 6spds happens to be on ebay at that time. it doesn't look like my broken 7spd clamp has any satisfactory fix

anyhow, once more, thanks so kindly for all the help, gentlemen.
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