grinding noise from BB or cranks

garyw2u
garyw2u Posts: 11
edited July 2009 in MTB workshop & tech
Every time I take my bike out there is a grinding noise that seems to come from the cranks or BB any time I pedal. Are the bearings in the BB worn or is it something else?

Comments

  • dynamis_dk
    dynamis_dk Posts: 428
    If you're not mechanically minded yourself i'd strongly advice you get yourself into your local bike store and get it checked out!!

    A few years ago i had a bit of a grinding noise which i ignored for a 10 mile ride - resulting in complete killing of bearing and cups on a 3 piece crankset!!

    I'd guess grinding is normally due to bearing wear and/or lack of lubrication in the bears. Might simply be times for new bearing etc.
    Endomondo Rides
    Santacruz Superlight
    Planet-X Jackflash
  • garyw2u
    garyw2u Posts: 11
    Thanks Dynamik. That is probably good advice as i have been riding it with a grind for at least 2 months
  • steelo
    steelo Posts: 542
    If you have cheap pedals then it'll be the bearings in them in which case a new set will do the trick! Same thing happened to me! Just grab each pedal and give it a rattle to see if there is play in the spindle.

    Likewise with the crank, hold each crank arm and try to move the cranks side-to-side, if there is play then the bearings are most likely shot.
    Specialized Rockhopper '07
    Trek Fuel EX8 '09
  • garyw2u
    garyw2u Posts: 11
    Cheers Steelo. I have to get it sorted soon cos I am going to the Alps next week for a holiday and I'm bringing the bike with me

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