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Frustrating drive chain noise

by Marky Legs
Thu, Aug 23, 2012 10:51
11

I have a Planet X road bike with SRAM Red rear mech running on an SRAM block with SRAM chain.

It has been great until recently when - intermittently - it will start making a noise not dissimilar to that when you are not quite in the gear, but loader and not constant (difficult to explain).

If I pedal backwards, it stops - for a while anyway.
If I change gear, sometimes it stops sometimes not.

Has anyone got any ideas what can be causing this?

The rear mech, chain and sprocket look lined up to me.

Mark

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11 comments

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derek vivian | 12 years ago
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I suspect that there could be some chain wear causing the noise you describe.

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Amos | 12 years ago
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Ok well mine is held on by to small screws, I wasn't referring to the H and L limit screws !!

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RobeH | 12 years ago
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just a thought,is the cassette on tight might be worth checking.

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Amos | 12 years ago
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Is the mech hanger tight? I've seen it a couple of times where the two small screws holding it on have loosened slightly due to lack of loctite.

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veseunr replied to Amos | 12 years ago
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Amos wrote:

Is the mech hanger tight? I've seen it a couple of times where the two small screws holding it on have loosened slightly due to lack of loctite.

...The two small screw are for top/bottom adjustments. One big hex key bolt hold the thing on! As previously mentioned, tension screw (the one that presses against the frame) might be worth screwing down if jockey wheel close to cassette.

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colhum1 | 12 years ago
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There's lots of experience here on this site but it's always going to be difficult trying to explain/describe a noise or sensation.....
Why not pop to you LBS and ask them to give their opinion (in the flesh, so to speak) 39

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Marauder | 12 years ago
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I would suggest checking to make sure the rear derailleur is set correctly before messing around.

http://www.youtube.com/watch?v=SkzvfCaIbyQ&feature=youtu.be

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Lost faith in t... | 12 years ago
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check your rear mech tension screw, are the jockey wheels really close to the cassette?

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Marky Legs | 12 years ago
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Hi,

Wheels are stock Planet X ones until I upgrade.

It has been ridden in sportives and as a consequence it has suffered getting wet.

Do you think it's possible some water has gotten into the freewheel? Perhaps removal, clean and lube would resolve - comments please.

Mark

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02curtisb | 12 years ago
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Hi Mark,

I also have a Planet X frame but built up with 105. I'm sure if its the same annoying noise but i seem to get a squeak/creak when i put some power through the pedals. Mine too is intermittent and dependant on the gear im in. I initially throught it was cleats or chainset but im thinking it may be the BB.

Let me know if you think it sounds like the same issue. or similar a least!

Ben

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minnellium | 12 years ago
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Hi Mark

What wheels do you have? The freewheel may be having problems engaging the pawls if it's doing that and stopping when you freewheel.

I run SRAM Red on four bikes and have never had that issue but have had something similar on a different bike with the freewheel cassette clicking after a few minutes of pressure.

Dave

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