Weird ticking noise from the BB (I think)

waddlie
waddlie Posts: 542
edited May 2009 in MTB workshop & tech
A few weeks ago on a damp, gravelly ride a ticking noise started coming from the Bottom Bracket area of my bike, or possibly th cranks. About 3 irregular ticks per revolution, and only when I'm actually transmitting power through the bike (if that makes sense.) It stopped a couple of days later but now it's doing it again and I have no idea why. It's difficult to track down because you can't hear it unless you're riding along.

The bike is a 3-month old Rockhopper Expert.

Any ideas what this is and how it can be fixed? Had some iffy experiences with two local LBS's recently so don't want to take it in just yet if I can fix it myself..
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Comments

  • mikeyg01
    mikeyg01 Posts: 10
    Funny that, my Rockhopper pro (bought 2 weeks ago) is making the same noise.

    So any ideas greatfully received - if it's simple I'd rather fix it myself.

    Thanks,

    Mike
  • David-Witts
    David-Witts Posts: 80
    First, Try swapping the pedals with a known good set from another bike ( or maybe LBS has an old spare set to loan ) and checking if the noise still persists. Davy
  • Daz555
    Daz555 Posts: 3,976
    Remove the pedals and put some lube on the threads. You should also lube the pedals themselves.

    In my experience pedals/threads are the most common cause of clicks and creaks in that area of the bike.
    You only need two tools: WD40 and Duck Tape.
    If it doesn't move and should, use the WD40.
    If it shouldn't move and does, use the tape.
  • nicklouse
    nicklouse Posts: 50,673
    read the info in the FAQs as it could well be something totally different.
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
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  • mick851
    mick851 Posts: 56
    my bike was making a ticking noise last week :? . turned out i had a lose pedal, i stripped the pedal down,cleaned, regreased put the thing back together......no more ticking :D
  • maximus69
    maximus69 Posts: 347
    ha, my hopper was doing the same thing.

    cleaned, greased and tightened up pedals. no joy. :?

    had bb stripped and re greased, no joy. :?

    checked every screw and bolt on bike, all tight. :?

    in the end bought xt crank. just because i was convinced that was the problem. it was goin cheap in lbs and free fitting anyway. problem solved, no. :cry:

    much head scratching later i slummped over saddle and guess what? :evil:

    i would check your saddle too!!

    live and learn :roll:
    "My life is like a porno-movie, without the sex".
  • ride_whenever
    ride_whenever Posts: 13,279
    saddle rails and seatpost are a good and easy one.

    check the wheels are done up pretty tight as you can sometimes get clicking from them.

    Check shoelace/front mech cable for catching on the crank

    etc.





    Have fun :wink:
  • brownix
    brownix Posts: 115
    take off your cranks but not the bb and grease the spindle and the crank threads that connect on to the spindle (dunno what they're called)

    then put them on and tighten the crankbolts

    hopefully problem solved
  • mikeyg01
    mikeyg01 Posts: 10
    Not sure about Waddlie, but from me - thanks for the replies. The pedals look the easiest place to start.

    Mike
  • mick851
    mick851 Posts: 56
    mikeyg01, the pedals was the last thing i checked :roll:
  • blu3cat
    blu3cat Posts: 1,016
    check your freehub,

    Had the same sort of experience on the last 2 bikes I bought, turns out I got a knackered freehub on both times and got warranty replacements. Fixed the clicking right away.

    Symptoms: I could feel a tiny "bump" in the crank when I heard the click, sounded like it was coming from my bottom bracket. When "freewheeling" the cranks backwards, the free wheel would lock and give erratic movement extending and dropping back into place even though the gears were perfectly aligned.

    Good luck finding it.
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