Thread: Problem with BB gearbox spacer
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Unread 09-01-2007, 20:37
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Re: Problem with BB gearbox spacer
Quote:
Originally Posted by jskene View Post
When we attached our two BB gearboxes to CIM motors, one made a loud skreeching noise.

Upon examination it turned out that the black metal spacer that goes between the CIM motor and the pinion gear was ~ 1mm too long. A quick trip to the bench grinder fixed the problem, and the gearbox runs smoothly now.
What is the dim of the spacer now that you cut it down by 1mm?

Will anyone who has successfully run the CIMs with the BB 56mm trans please measure their spacers and post the dimension on this thread?

If we get some good data, we can perhaps have FIRST or BB send out an all points bulletin with the news to check your spacers for the right dimension.

Joe J.
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