Pinging or knocking heard from bottom bracket

kovacsa
kovacsa Posts: 44
edited July 2019 in MTB workshop & tech
Hey All, Without taking the bike apart, I was hoping to figure out what a knocking or pinging sound is due to. It seems like it's coming from the bottom bracket. It happens at the same point in my peddle cycle (although that point has changed over time). I suspect something is loose like a ball bearing or something is cracked.. It only happens when I'm peddling and there is load on the chain. Any ideas? Thanks!

Audio: https://vocaroo.com/i/s1bidFnmnnGa

Comments

  • JBA
    JBA Posts: 2,852
    Check your pedals before you dismantle the bb.
    “Life has been unfaithful
    And it all promised so so much”

    Giant Trance 2 27.5 2016 ¦ Sonder Broken Road 2021¦ Giant Revolt Advanced 2 2019 ¦ Giant Toughtroad SLR 1 2019 ¦ Giant Anthem 3 2015 ¦ Specialized Myka Comp FSR 2009
  • mark~p
    mark~p Posts: 55
    The most likely cause is the bearings in one of the pedals. There is either muck in it or the balls have corroded or got flats on. For whatever reason I always find the right pedal is knackered first.

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