Drivetrain rumble.

[Trebz]

All

Working on a bike for a pal. He's been complaining of the bike 'Rumbling' when putting power down on the pedals.

I have removed the chain and checked the bottom bracket, all fine there, chainset it also perfect, all nice and tight. Rear mech alignment has been checked and is ok, I tweaked it a little as it was 1mm out on each ring at the back end.

Re fitted the chain, rumble still apparent.

Is this a sign of a dead chain?

Never once come across this in all of my cycling years.

Thanks

Trebz

 

[cce]

rumbles are usually down to bearings. hub/freewheel?

 

[Canuck]

Pedals perhaps?

 

[Mobilecyclerepairs]

Check the freehub body, more than likely be the source of the problem.

 

[bren]

I had a strange rumbling sensation through the pedals ( not audible) when I fitted a new chain to a worn cassette recently.
Cassette looked fine, but apparently wasn't!

 

[Splatter Paint]

jockey wheel rubbing on the cassette?

freehub is the next obvious culprit.

SP