Mikey Tomo Posted February 23, 2009 Report Share Posted February 23, 2009 Ok, when i spin my cranks or pedal my BB makes a knocking sound. What is this and how do I fix it? Quote Link to comment Share on other sites More sharing options...
Gogz- Posted February 23, 2009 Report Share Posted February 23, 2009 (edited) Sounds like your bb is fU@ked. 1st Try checking if its done up nice and tight, also check to see that its not your pedals making the noise. If it is the bb the only real thing you can do is replace it. Edited February 23, 2009 by Gogz- Quote Link to comment Share on other sites More sharing options...
Captain Scarlet Posted February 23, 2009 Report Share Posted February 23, 2009 (edited) Does it make the knocking noise when riding? (with weight on it?)If so it can be one of or a combination of 4 things; Pedals, Chain, Cranks, Bottom Bracket, (Most likely the bottom bracket but always go through this process).Are your cranks loose or worn?, double check by tightening them up, does the noise still occur? If no, then problem solved.Are the bearings in your pedals knackered?, put a friend's pedals on see if that makes any difference.Chain?, is your chain in good condition (and the respective cogs), check for missing teeth and that your chain is well lubed.And lastly bottom bracket, it may have just come loose over time, so take your cranks off and give it a good tighten (remember the drive side is a reverse thread).If the noise still occurs, you will need to replace your bottom bracket, as I'm assuming you one is sealed and the bearing is irreplaceable (unless you have a Try-All bottom bracket where you can just buy a new cartridge bearing). Edited February 23, 2009 by Captain Scarlet Quote Link to comment Share on other sites More sharing options...
N.Wood Posted February 23, 2009 Report Share Posted February 23, 2009 Is it your crank or your pedal? Grab the crank arm to turn it, not your pedal. Quote Link to comment Share on other sites More sharing options...
guuuuuuuuu leeeeeeeee Posted February 23, 2009 Report Share Posted February 23, 2009 my mate tried puting some lube in his bb that worked Quote Link to comment Share on other sites More sharing options...
Gogz- Posted February 23, 2009 Report Share Posted February 23, 2009 Does it make the knocking noise when riding? (with weight on it?)If so it can be one of or a combination of 4 things; Pedals, Chain, Cranks, Bottom Bracket, (Most likely the bottom bracket but always go through this process).Are your cranks loose or worn?, double check by tightening them up, does the noise still occur? If no, then problem solved.Are the bearings in your pedals knackered?, put a friend's pedals on see if that makes any difference.Chain?, is your chain in good condition (and the respective cogs), check for missing teeth and that your chain is well lubed.And lastly bottom bracket, it may have just come loose over time, so take your cranks off and give it a good tighten (remember the drive side is a reverse thread).If the noise still occurs, you will need to replace your bottom bracket, as I'm assuming you one is sealed and the bearing is irreplaceable (unless you have a Try-All bottom bracket where you can just buy a new cartridge bearing).He knows! Quote Link to comment Share on other sites More sharing options...
Mikey Tomo Posted February 23, 2009 Author Report Share Posted February 23, 2009 It's definetly the BB. Does anyone have a spare BB tool I could borrow or buy? Quote Link to comment Share on other sites More sharing options...
Ashley-Wood Posted February 23, 2009 Report Share Posted February 23, 2009 instead of making a new topic, when i ride my bb makes a horrible creaking noise!does it need greasing, and its only on the left side. ive checked my pedals re greased and tightned and cranks are fine.id like to metion its a brand new truative gigapipe bb Quote Link to comment Share on other sites More sharing options...
forteh Posted February 24, 2009 Report Share Posted February 24, 2009 instead of making a new topic, when i ride my bb makes a horrible creaking noise!does it need greasing, and its only on the left side. ive checked my pedals re greased and tightned and cranks are fine.id like to metion its a brand new truative gigapipe bbTake the BB and cups out, put copper slip on the threads and inside the loose cup where it fits over the BB shell - that should solve your creaking Quote Link to comment Share on other sites More sharing options...
Mikey Tomo Posted February 27, 2009 Author Report Share Posted February 27, 2009 Ok. The knocking noise has stopped but now when i rotate my carnks after a few rotations they lock. This is the BB because as I watch it one side goes into the frame and the other moves out. I tightened both sides but it still does it. How can I fix it? Quote Link to comment Share on other sites More sharing options...
psycholist Posted February 28, 2009 Report Share Posted February 28, 2009 The bearings are definitely f**kered in the BB now - that sideways movement is the ball bearings moving out of line and seizing. Replace the BB or the BB bearings... Quote Link to comment Share on other sites More sharing options...
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