Shimano Ultegra FC-6600 left crank compatibility
01-06-20, 09:03 AM
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Shimano Ultegra FC-6600 left crank compatibility
I'm looking at installing a Stages power meter (left side only) on my not-so-new ride. It currently has an Ultegra FC-6600 crankset (10-sp, 2x). Would a 105 5800 left crank arm fit there? And if so, any spacer needed between the crank arm and the axle face?
01-07-20, 07:55 AM
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The crank arms have the same HT2 interface with the spindle. I've not seen a road HT2 with any type of spacer on the left. That doesn't mean something doesn't exist. Folks do weird stuff
01-07-20, 09:29 AM
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Thanks, that's what I figured out. The spacer question comes from the original FC-6600 Technical Service Instructions from Shimano - they specify the use of a spacer for the left crankarm on triple chainring (FC-6603) installations, no clue why.
01-07-20, 10:39 AM
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the 6603 uses a spacer on both sides. #16 plastic on the drive side and #10 metal on the NDS.
Most likely to get the correct chain line.
https://si.shimano.com/#/en/EV/FC-6603
Most likely to get the correct chain line.
https://si.shimano.com/#/en/EV/FC-6603
Last edited by dedhed; 01-07-20 at 10:44 AM.
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