• So I have some Middleburn R02 cranks that I picked up off eBay. I want to install them with my Shimano BB. Everything is 24mm axle, so I think it should work. My frame is standard 68mm threaded.

    I found these instructions on LFGSS: https://lfgss.microcosm.app/api/v1/files/91be8679cbe28a02b2b80ec0a338aeb5d1117584.pdf

    The problem is that the cranks can slide side-to-side in the BB, so I think some spacers need to be added onto the axle.

    I found these instructions for a Middleburn BB: http://www.sjscycles.com/Instructions/Middleburn/Midleburn_X-Type_Mountain_Bike_Bottom_Bracket_Instructions.pdf

    This mentions some spacers:

    68mm / CLA M P -ON FD / Right cup: 1x2.5mm 2x1.25mm spacers / Left cup: 1x2.5mm spacer

    But is this right for a Shimano BB?

    Any ideas?

  • I have a set of these I've been meaning to fit. I'll have a look if they came with any instructions later.

  • Much appreciated!

  • I have just taken these off my bike and replacing them, will check what spacers I used, but it did take a few to get right on the bike these came off compared to the bike before which was a Brother Kepler.

  • I happened to dig the cranks out last night, no instructions though. I have 2 thick washers, one thin and one wavy (from new). Have emailed BETD for confirmation and torque specs for the bolts, got an out of office until Monday.

  • I had the 2.5mm and wavy washer on non drive side and then 2.5mm on the other

    I torqued them to about 40Nm

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Middleburn R02 Cranks with Shimano BB - How many spacers?

Posted by Avatar for mind_maze @mind_maze

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