Bb grief

Ferrals
Ferrals Posts: 785
edited May 2015 in MTB workshop & tech
Had a new sram gxp installed about 2.5months ago,done about 1000km off-road since then. It's already creaking under power and developed play of a couple of mm in it. Is this normal? Will take it to the lbs in the next few days but just wondering. I'm also wondering if my chain-line not being perfect (1 by 10 using the outside ring on a double crank) would be causing extra strain causing it to go quicker.

Got a race next weekend and the weekend after so not the ideal time for issues :twisted:

Comments

  • iwilldoit
    iwilldoit Posts: 710
    Hi Ferrals

    My Specialized likes BB as well first one lasted 6 month and the second 5 months ( Shimano Octalink ) talking to the mechanic in my local ish Specialized bike shop he asked how many miles a week I do which is around 60-70 mile a week, he seemed to think it was fine, got to be honest I don't.
    https://goingdownhillfastsite.wordpress.com/
  • nicklouse
    nicklouse Posts: 50,675
    Ferrals wrote:
    Had a new sram gxp installed about 2.5months ago,done about 1000km off-road since then. It's already creaking under power and developed play of a couple of mm in it. Is this normal? Will take it to the lbs in the next few days but just wondering. I'm also wondering if my chain-line not being perfect (1 by 10 using the outside ring on a double crank) would be causing extra strain causing it to go quicker.

    Got a race next weekend and the weekend after so not the ideal time for issues :twisted:
    If you have play then either the cranks have come lose or the ND side bearing has worn out.

    The BB shell was faced when the external Beering system was first fitted?
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown
  • Ferrals
    Ferrals Posts: 785
    I checked cranks earlier but will double check.

    Not sure if the shell was faced, got the lbs to fit the bb before which was a direct replacement for the one which cam on the bike
  • Ferrals
    Ferrals Posts: 785
    Reckon its ok to leave this for a couple of weeks? got races the next couple of weekends and not sure if the bike shop will be able to do it in time.

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