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  1. #1
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    How "free" should a crank spin?

    No chain - just grab the crank arm and spin. How many times should it spin? I know - lots of variables, e.g. pedals on? how hard did you spin it? But in general - should it spin 15-25 times or 2-4 times?

    With a new BB all snugged up, the cranks feel buttery smooth - no noticeable resistance... but with a hard spin, they turn 2 times. My guess is that after one ride, they'll loosen up a bit?
    Mountain bikers who don't road ride are usually slow.
    Roadies who don't mountain bike are usually d***s.

  2. #2
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    Quote Originally Posted by OldZaskar
    No chain - just grab the crank arm and spin. How many times should it spin? I know - lots of variables, e.g. pedals on? how hard did you spin it? But in general - should it spin 15-25 times or 2-4 times?

    With a new BB all snugged up, the cranks feel buttery smooth - no noticeable resistance... but with a hard spin, they turn 2 times. My guess is that after one ride, they'll loosen up a bit?
    6

    but it is kind of like the big wheel on the price is right, totally depends on who is spinnin'

  3. #3
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    Mine usually make 2-4 turns with a moderate push.
    '12 Soma Analog SS
    '10 Transition TransAM
    '07 Felt F1X
    '97 Schwinn Mesa SS
    '89 Fuji Saratoga
    '86 Fuji Club

  4. #4
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    With external-bearing bottom-brackets, I find that I don't get more than a very few turns, at least not immediately post-install.

    Cranks on my internal-bearing bottom-brackets spin much more freely. I believe the difference is down to the seals on the external models.

  5. #5
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    4 to 6 at the start after a month 10 to 12 gentle push....

    Really you just want the bearing preload enough to take out the play in the bearings no more...

  6. #6
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    Reputation: AL29er's Avatar
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    2-4T if I am using a stock shimano BB
    10-12T if I have enduro bearings installed

    Either way there is no perceptible difference from the saddle
    Quote Originally Posted by saturnine
    that's the stupidest idea this side of pinkbike.

  7. #7
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    This is all good to hear. In the past two weeks, I've installed 2 X-type BBs - first of this type. Both spun 2 or 3 times post install... but felt great. Sounds like all is well!

    Thanks.
    Mountain bikers who don't road ride are usually slow.
    Roadies who don't mountain bike are usually d***s.

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