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-   -   stripped set screw on hub (https://www.bikeforums.net/bicycle-mechanics/877009-stripped-set-screw-hub.html)

evan938 03-09-13 08:03 PM

stripped set screw on hub
 
I have some Sram S27AL Comp wheels. the hub has been loose and im getting some play in the rear wheel. Well, tonight when i go to address this per these instructions http://cdn.sram.com/cdn/farfuture/7q...ice_manual.pdf , the set screw stripped...not the threads, but where the allen wrench goes in.

now, i have the play addressed, but i want to get this stripped screw fixed. whats the best way to get this out, and where might i be able to find a new set screw to replace it?

thanks!

pursuance 03-09-13 08:11 PM

have a mechanic remove it as you may make it worser.

i'd drive a tight fitting torx bit into the messed up allen, then remove the set screw.

but i'm an old diesel mech. have someone do it if you are in doubt.

evan938 03-09-13 08:40 PM


Originally Posted by pursuance (Post 15366426)
have a mechanic remove it as you may make it worser.

i'd drive a tight fitting torx bit into the messed up allen, then remove the set screw.

but i'm an old diesel mech. have someone do it if you are in doubt.

argh. i feel somewhat comfortable with my mechanical abilities, its just in a spot its gonna be hard to get an extractor bit in there so close to the spokes.

i'll run it by the LBS tomorrow and see what they say.

dsbrantjr 03-09-13 09:56 PM

You could epoxy a sacrificial hex driver into the screw. JB Quick, for example, sets fast and is quite strong.

HillRider 03-10-13 08:07 AM

Do you have room to Dremmel a slot across the bolt head and remove it with a screwdriver?

Once you get the set screw out, you should be able to find a replacement at any shop that has a good assortment of metric bolts. A hint for the future; buy good allen keys and replace them often, particularly the smaller ones. They are wear items and as soon as the sharp edges wear down, they will damage bolts as you have discovered.

dsbrantjr 03-10-13 10:51 AM

"buy good allen keys and replace them often"
Although hex keys are relatively inexpensive, you can extend their useful lives by grinding the worn ends down square to expose new, sharp driving corners.

Also, do not try to use the ball end types for applying significant torque as they are apt to strip out the socket; just use the ball end to get them started and spin them in, then switch to the squared-off end for final torquing.

Nitpick: From Wikipedia: "The Allen name is a registered trademark, originated by the Allen Manufacturing Company of Hartford, Connecticut circa 1910, and currently owned by Apex Tool Group, LLC. Its genericized use is discouraged by this company. The standard generic name used in catalogs and published books and journals is "hex key".

evan938 03-10-13 08:01 PM

good call on the dremmel! i can try that. not sure why i didnt think about that as thats what i had to do when i had a similar issue with a stripped derailleur bolt from the same thing (stripped "hex key :))


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