Noisy Drivetrain on my road bike. Help.
I’ve got a brand new 10 speed 105 drivetrain on my bike.
Gears all shift fine.
Problem is that it’s noisy.
If I put my finger on the bottom of the rear mech cage as I turn the pedals in the stand there’s a distinct vibration through it – it’s moving backwards and forwards ever so slightly each time a tooth on the chainring engages with a link on the chain (or a link leaves the chain, I guess). It’s like the chain isn;t sitting on the teeth on the cassette or chainring quite right and is ‘dropping’ onto the cog when under tension.
Chain is fitted the right way round – writing facing out, slots in the plates facing towards the wheel. I’ve cleaned the chain so it doesn’t have the new grease on it sticking it to the chainring. Chain is the correct length.
I’ve tried adjusting the rear mech tension and it’s the same throughout the adjustment range (ie. doesn’t seem to be that the mech is trying to move the chain across the cassette and it’s climbing and then dropping).
Tried spinning the wheel out of the bike and it’s spinning smoothly. The freehub is a clicky (like Hope) one but doesn’t seem rough at all. Wheel is virtually new too.
Anyone got any ideas?Posted 4 years ago
I’ve done nearly 200 miles on it and it’s not really changed since day 1 really.
I’m beginning to wonder if I might have to actually take it to a bike shop to get it looked at and make sure the mech hanger is straight etc.
It does feel a bit like when the mech is slightly out of adjustment through the pedals but it’s not thatPosted 4 years ago
Chain length is ok, I think – it’s big to big plus a link or two isn;t it?
Tried fiddling with the b screw but no change – it’s the same noise in all gears and both small and large chainrings – there’s no contact twixt derailleur and cassette.
are you sure its a 10 speed chain ?
Well, I looked and saw it was HG and thought, “hang on that’s 9 speed!” but picked the product code off one of the links, googled it and it’s a 10 speed chain.Posted 4 years ago
for chain length on road bike, put it big front, small back and jockey wheels should be vertically aligned when chain threaded. Is it a common/current frame ? if you you could always try a new mech hanger which should be readily availably and cheap, but doesn’t sound like that to me. When I got my brand new Defy Composite 18 months ago I had troublesome shifting from the outset and changing the hanger cured it, but that was more a case of indexing being ok at one end of block and off at the other, whereas yours sounds more like a compatability issue. If the full drivetrain new ? rings, chain, cassette, jockey wheels ?Posted 4 years agoswampiMember
i have noticed on a few of my road bikes the drivetrain is noisey. the worst being my dura ace 9 speed rear mec. have tried diff jockey wheel,chain etc to no avail. My microshift new set up was the same but after a few hundred miles it has obv bedded in and has gone quite.Posted 4 years ago
Odd thing is i never seemed to get loud drive train noise on my mtbs
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