Strange noise

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aquilo
Posts: 33
Joined: 22 Aug 2011, 8:11pm

Strange noise

Postby aquilo » 18 Jun 2017, 3:04pm

Its a bit of a tale this but it begins touring in France when bike began making lots of clanking and clicking noises from drive chain somewhere. Very loud and noticiable to other cyclists. Anyway trip to LBS and new hollow tech BB. First ride no change, back to LBS and a different BB (same type as when I bought Bike new)
Another ride and no change, go to another LBS and they say they can't hear anything. Must be imagining it.
So set of an a century ride to my mates And it just gets louder, a loud clicking sound from drivechain somewhere.
It's there pretty much all the time but intermittent, it's there when pedalling forward or back. It stops when freewheeling. It's not there if you put bike on workstand and spin pedals either way.
The bike is a Ti frame Lynskey and drive train is all 105. Tried tightening all the bolts in the drivechain and the pedals.

Any thoughts?

reohn2
Posts: 26775
Joined: 26 Jun 2009, 8:21pm

Re: Strange noise

Postby reohn2 » 18 Jun 2017, 3:09pm

I'll take a shot at rear wheel bearings needing servicing and or freehub body bearings shot.
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tim-b
Posts: 672
Joined: 10 Oct 2009, 8:20am

Re: Strange noise

Postby tim-b » 18 Jun 2017, 3:23pm

Hi
In which gear(s) does it happen?
The ends of the derailleur inner cables sometimes move with the mech into contact with cranks, etc
Saddle wires transmit sound well, and often only when you pedal
Regards
tim-b
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Brucey
Posts: 25804
Joined: 4 Jan 2012, 6:25pm

Re: Strange noise

Postby Brucey » 18 Jun 2017, 9:06pm

could easily be a creaky saddle, seat pin, handlebars, chainring bolts, pedal spindle..... you name it, it can creak, and that goes double on a Ti frame. Many careful tests are required to eliminate everything else from your enquiries; e.g. that the noise stops when you stop pedalling does not irrefutably prove that the noise is coming from the transmission, because the loading in the rest of the bike is also changed when you stop pedalling

cheers
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Gattonero
Posts: 2106
Joined: 31 Jan 2016, 1:35pm
Location: London
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Re: Strange noise

Postby Gattonero » 18 Jun 2017, 9:27pm

Try a different wheel and different pedals, to start with
It is by riding a bicycle that you learn the contours of a country best,
since you have to sweat up the hills and coast down them.
Thus you remember them as they actually are...

aquilo
Posts: 33
Joined: 22 Aug 2011, 8:11pm

Re: Strange noise

Postby aquilo » 19 Jun 2017, 8:08pm

Hi
Thanks for the responses. It happens in all gears and I agree it does not have to be the drivetrain and I've looked at an tightened lots of other things like seat post etc. But the fact that is so unequivocally happening only when I pedal forward or back seems to suggest drive train. Could be rear wheel bearings, but that's all a bit beyond me so back to LBS again I think
Many thanks

freeflow
Posts: 1049
Joined: 29 Aug 2011, 1:54pm

Re: Strange noise

Postby freeflow » 19 Jun 2017, 8:40pm

Does the noise happpen when you pedal just standing on the pedals. i.e. no contact with the seat.

Is the clicking

• Once per pedal revolution
• once per wheel revolution

aquilo
Posts: 33
Joined: 22 Aug 2011, 8:11pm

Re: Strange noise

Postby aquilo » 21 Jun 2017, 7:26pm

Yes it does continue when not sat in the seat . So not looking like a seat post area issue.

Anyway I need to get some miles in for LEL so The commuting bike will have to do some more work until I can get LBS to take a look.

Thanks for all the suggestions, much appreciated

MikeF
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Re: Strange noise

Postby MikeF » 22 Jun 2017, 12:06am

Gattonero wrote:Try a different wheel and different pedals, to start with
Good idea. Change one thing at a time, which is what I think you meant.
"It takes a genius to spot the obvious" - my old physics master

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Gattonero
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Re: Strange noise

Postby Gattonero » 22 Jun 2017, 1:47pm

Since the groupset is 105, I would exclude the cassette.
Won't be the first Shimano cassette where the spider supporting the mid&large sprockets does make noise from its rivets. Not in the 105 cassette though
It is by riding a bicycle that you learn the contours of a country best,
since you have to sweat up the hills and coast down them.
Thus you remember them as they actually are...


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