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Old 04-06-2013, 02:16 PM
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oldpotatoe oldpotatoe is offline
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Join Date: Oct 2009
Location: Republic of Boulder, USA
Posts: 42,348
For you metallurgists-ti galling

Ok, here's the problem.

Legend Ti frame, Record RD with ti fixing bolt. Regular customer, I have taken his RD off and put back on many problem.

He travels with bike, takes RD off..this time when putting it back on..LOTS of resistance(it's not cross threaded, lathered with antisieze)..and when he tried to take it back

Brings it to me and to take it off, the typical mucho noise, WACK, Wack, big noise as it comes of in spurts, complete with sparks..obviously galled in there. So I DO finally get it off, swap the ti bolt with another lather with antisieze..put it back on, not a lot of resistance but some..same issue getting it off again...

What is going on? Undoubtedly it's ti to ti galling but why? And what to do?

I'm stumped, never seen this before.
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