Bike making increasingly loud 'grating' noises.

[pedaling]

I will let you know. But I won't be able to get to the bike shop till the weekend, or week after. Rode it for a very short cycle recently and it was very quiet. Weird. There must be something wrong with it though, yesterday it was ridiculously noisy.

 

[caz]

I recently had a "clonking" noise, rather than a grating noise, which would appear after 2 or 3 miles and gradually got worse with time. I located it to the pedal/crank area and took it to my lbs who diagnosed it to be the bottom bracket. When they took it apart they found the bottom bracket was loose! They tightened it up and no problems with it since! Take it to your lbs - they've got all the right tools and expertise. Let us know how you get on!

 

[cheadle hulme]

If you want me to have a quick look Pedaling, PM me by clicking on my user name.
I'm going out on the bike to the gym later so its no hassle.

Sounds like you're bottom bracket to be honest.

 

[Angelfishsolo]

+1

My money's on a crank bearing

 

[Tynan]

yeah bottom bracket, there should be some play in the whole pedal assembly

a badly adjusted front mech makes a bad noise though, should be obvious enough though by looking down

 

[Angelfishsolo]

** If there is problem

yeah bottom bracket, there should be some play in the whole pedal assembly **

a badly adjusted front mech makes a bad noise though, should be obvious enough though by looking down