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  1. #1
    coffee bean grinder grinderbob's Avatar
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    where to find a 123mm isis BB?

    Need to be 68 x 123mm. Don't know who make them and where to get them.
    FSA has some 73 x 123mm, does it come with a spacer to put on the drive side?
    Any ideas? thanks!
    Last edited by grinderbob; 08-02-08 at 10:37 PM.

  2. #2
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    Someone correct me if I'm wrong, but I think you can just put a 2.5mm shim on the drive side.

    You might try asking in the mechanics forum

  3. #3
    coffee bean grinder grinderbob's Avatar
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    If I put a shim on the drive side, the drive/non-drive side would not be symmetric anymore.

  4. #4
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    well, the shell is 5mm too skinny, so you want to add 2.5mm on each side of the shell right? The non-drive side BB cup doesn't need shimming though, because it doesn't have a flange. Hence a single shim on the drive side.

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