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Unread 14-02-2014, 14:17
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AKA: Steven Lao
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Re: Ball Shifters - weird shifting behavior

Quote:
Originally Posted by Nunners View Post
We've replaced a gear with a ratcheting wrench. During our troubleshooting last night, we noticed that we are actually missing a spacer that fits on the outside of the upper gears. We replaced it with a fabricated part last night but didn't have time to test it.

I wonder if this might be the cause of our problems. I don't know why it would cause the shifter to move, though.
Sounds similar to what we did. I believe that the spacer helps axially line up the grooves in the gear with the balls. Because it's not lined up without that spacer the balls aren't sitting inside the grooves fully, and so applying some torque will push the balls back inside and move the shifter also.