Chain Dropping
aidso
Posts: 493
I had a wee search and most people seem to have the problem when they are shifting, but I am getting chain slippage when standing up and powering up a climb. I will be in the largest of 3 cogs and the chain will snap forward and drop into the middle - sometimes sending me into a face-plant over the bars.
As far as I can tell, the shift is happening smoothly and it stays in position when pedalling along, its only when I stand and apply pressure. The teeth on the front derailler appear to be sharpish and aren't flat.
Any other ideas?
As far as I can tell, the shift is happening smoothly and it stays in position when pedalling along, its only when I stand and apply pressure. The teeth on the front derailler appear to be sharpish and aren't flat.
Any other ideas?
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Comments
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Badly indexed front mech, with the mech in the right place the chain shouldn't be able to come off the big ring!Currently riding a Whyte T130C, X0 drivetrain, Magura Trail brakes converted to mixed wheel size (homebuilt wheels) with 140mm Fox 34 Rhythm and RP23 suspension. 12.2Kg.0
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Something is worn or not adjusted properly.
But I really hope your front derailleur doesn't have teeth.I don't do smileys.
There is no secret ingredient - Kung Fu Panda
London Calling on Facebook
Parktools0 -
Should the teeth be flat/squared?0
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Front derailleurs don't have teeth.
Do you mean chainrings?I don't do smileys.
There is no secret ingredient - Kung Fu Panda
London Calling on Facebook
Parktools0 -
sorry haha, yes I mean the chain rings.0
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Too low a gear in the back i bet. Why are you climbing in the largest of 3 chainrings? I guarantee its that not a setup issue.0
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High screw on the front derailleur maybe to move it further out?0
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I'll try the screw adjustment - looking down I thought there was enough clearance etc but I'll give it a go.
And why not climb in the highest ring? Gears are there to be used.0 -
aidso wrote:I'll try the screw adjustment - looking down I thought there was enough clearance etc but I'll give it a go.
And why not climb in the highest ring? Gears are there to be used.
Because your chainline would be better (more direct) if you where in the middle or granny .
Sound like you?
http://www.intownbicycles.com/how-to/ar ... cles-gears0 -
Dirtydog11 wrote:aidso wrote:I'll try the screw adjustment - looking down I thought there was enough clearance etc but I'll give it a go.
And why not climb in the highest ring? Gears are there to be used.
Because your chainline would be better (more direct) if you where in the middle or granny .
Sound like you?
http://www.intownbicycles.com/how-to/ar ... cles-gears
Quite possibly. I shall pay attention to the back next time it happens as it could be, in too low a gear. I don't have the same problem when I'm racing so didn't think it was a technique. Cheers0
