Yellow Saddle
Guru
- Location
- Loch side.
Chainsuck. Look for scratches on the paint on the chainstay just behind the smallest chainring.
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Ran the gears through on the Campus bikestand, up-down-fast-slow. Everything seems hunky-dory now. I did give the barrel adjuster (both on the mech and the inline one) a little tweak so may have just been cable tension.
A ride home tonight will confirm either way.
A ride home tonight will confirm either way.
mickle
innit
- Location
- 53.933606, -1.076131
A little tweak...? Maybe take it to a bike shop?
Tom B
Guru
- Location
- Lancashire
I had a similar sort of issue a few weeks ago. The bearings on the jockey wheels were the ball bearing type and was so knackered the balls got out and jammed the jockey wheel briefly causing the chain to skate over the wheel. It sounded horrible.
I was just returning to this thread after tweaking the cables and cleaning out all the mechanisms. Same issue seems to be arising, the jockey wheels have had almost 2000mi through them and i wonder if they're starting to go. There is a definite creak/click/clack in the drivetrain now but the bottom bracket is stable and solid, pedals are tight. Closeups of the rear mech below from this morning:
youngoldbloke
The older I get, the faster I used to be ...
Jockey wheels look fine - I replace them when the teeth are pointy, those look almost un-worn. Have you taken them off and cleaned and greased them? Simple job, worth trying
fossyant
Ride It Like You Stole It!
- Location
- South Manchester
New chain and cassette. The drive chain is filthy though.
Chain and cassette have maybe 300-400mi on them, that about time? Also, too much of this stuff turns the drive chain gunky:
Ajax Bay
Guru
- Location
- East Devon
If your image is after "cleaning out all the mechanisms", I suggest you remove your cassette and chain and clean them both, thoroughly. Then clean the chainrings and remove the jockey wheels and clean them (and grease), Then refit everything and lubricate lightly (@mickle method). If you think that 'Dry lube' attracts dirt if overused, don't use it. Use an alternative, sparingly, and wipe excess off before riding. Then see if this replicates itself. YS has suggested chain suck, probably caused by the chain and the rest of the drive train being, in your words 'gunky'.
Jockey wheels cleaned out and reattached; click/clack still there.
Tried adjusting the rear hanger by hand; stopped the chain slippage but still click/clack noise on pressure.
BB is stable and not wobbly, pedals are tight.
Next and final port of call will be the cassette and hub. Here's to hoping it's not the hub.
Thanks to all for input!
mickle
innit
- Location
- 53.933606, -1.076131
What is it that you are actually doing when you're 'tweaking' the cable adjusters?
Ajax Bay
Guru
- Location
- East Devon
I have another question: how many teeth on your large sprocket? I think it is 32t (but not certain) which is beyond the parameters of the RD you have fitted. Others have, I know, made this work. In the mage, the distance between the jockey wheel and the sprocket teeth is minimal. You may wish to screw the 'B' screw in further.
Tightening the barrel adjusters mainly, just applying pressure to make sure the cable has good tension.
The cassette and RD are as standard (well, replaced the cassette with like-for-like in the last few months). I might try the B screw adjustment later once i've taken the rear wheel off and examined the cassette and hub.
Yellow Saddle
Guru
- Location
- Loch side.
