Cycling Equipment · Public discussion

Thinking Of Changing My Crankset

Started by dwcutrell · · Last activity · 2 posts · 1,719 views

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Cycling Equipment
Published
27 October 2015
Last activity
27 October 2015
Original author
dwcutrell
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2
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Public discussion
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Topics
CranksetsDrivetrain compatibility

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  1. Original post
    dwcutrell
    Archived post
    #1

    Thinking of swapping out my road bikes crankset from a Shimano Ultegra 6800 compact 50/34 10spd crank to a Shimano Ultegra FC-6600 52/39T 10-Speed Crankset w/ Bottom Bracket... my bike has a BB330 bottom bracket.... so I'm just thinking of swapping out the chainrings from the new set if it will work & keep the cranks as spare parts.

    Is this possible?

    Thanks...

    Report
  2. oldbobcat
    Archived post
    #2

    I don't understand. Are you swapping the cranks or just the chainrings?

    I hope you meant to say the cranks, because the chainrings are not compatible. Your 6600 rings are 5-bolt 130mm BCD. Your 6800 cranks are asymmetric 4-bolt 110mm BCD. If you want to run larger rings on your 6800 cranks, you will need to buy them. All 6800 rings and cranks are 110mm.

    Since both cranks use a 24mm axle with a nominally 90mm length between the crank arms, the bottom bracket should present no problem.

    Report

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