Paul Ruinaard Posted April 5, 2017 Posted April 5, 2017 HI All, Just wondering if anyone has experienced this with 11 speed setups. Mine is actually a 2 x 11 Ultegra setup on my roadbike where the chain drops off the smallest (11 tooth ) cog whilst in the big ring on the front sometimes when i backpedal slightly. I have googled and it seems to be related to chain types or chain lines, but is more commonly seen in 1 x 11 setups where the chain line is acute and the chain slides down the cluster on backpedal. Anyone see similar or have a suggestion? I have been lead to believe that SRAM chains which are directional have been known to solve the problem?
popcorn_skollie Posted April 5, 2017 Posted April 5, 2017 I have a new keyboard. So I'm gonna type a few things.Over here. And then some more words over here. Yes. Yes. Good. Now.This keyboard can type all sorts of words. Mainly English ones.Maar ook afrikaans as dit nodig is. Excellent. Its bi-lingual. http://i0.kym-cdn.com/entries/icons/original/000/006/077/so_good.png Now about that chain. You sure its not too long?
Captain Fastbastard Mayhem Posted April 5, 2017 Posted April 5, 2017 I have it happening on my 1x11 but only when I backpedal when in 1st. That's been blamed largely on the XT cassette from what I've seen. But derailing from the 11t in the big ring when the chain line is almost perfect? Nah. Sure it's not a slight limit issue? Faulty chain? Chip on the 10th cog causing it to jump off? Slightly out of shape shifting ramp? Bent cog?
Paul Ruinaard Posted April 5, 2017 Author Posted April 5, 2017 I have it happening on my 1x11 but only when I backpedal when in 1st. That's been blamed largely on the XT cassette from what I've seen. But derailing from the 11t in the big ring when the chain line is almost perfect? Nah. Sure it's not a slight limit issue? Faulty chain? Chip on the 10th cog causing it to jump off? Slightly out of shape shifting ramp? Bent cog?Yeah that is where i am heading and also probably a new chain.
Tony datoy Posted April 5, 2017 Posted April 5, 2017 Chainline, my one by eleven does the same; but (haha) I don't have back pedal brakes.
MphatiPyga Posted April 5, 2017 Posted April 5, 2017 Had the same problem, and no it not a real back pedal, just that transition between pedal and not pedaling, well for me anyway ????. My LBS eventually found that I had somehow bent my cassette, don't ask how because I don't know, but well it is, eventually it started to cause the chain being kicked off! bought a new cassette and voila no more problem.
Yusran Posted April 5, 2017 Posted April 5, 2017 My Ultegra 6800 runs like silk feels. I can back pedal at any speed in any gear and the chain won't even attempt to drop off; in the 52-32, 52-11, 36-32, 36-11 or anything in between. I know because my friend with Ultegra Di2 was dropping his chain on the cassette every time he backpedalled, in any gear. I had to show him my bike to prove that dropping the chain when backpedalling is not normal. Long story short, your gearing needs to be tuned to perfection, and your chain needs to be the right length, and installed the right way around if it is directional. YouTube ALL the things! I spent about 30mins with my bike on the workstand to get it perfect (okay this was when I first built it up) and it has been perfect ever since. I suggest you give your bike some loving and attention to see if you can get it running buttery smooth going forwards or backwards. A keen eye and fine touch go a long way.
V12man Posted April 5, 2017 Posted April 5, 2017 Maybe a cog turned the wrong way round in the cassette? With the releases facing the wrong way - easy to do if you take off a cassette to clean it when putting it back on.
NotSoBigBen Posted April 5, 2017 Posted April 5, 2017 Maybe a cog turned the wrong way round in the cassette? With the releases facing the wrong way - easy to do if you take off a cassette to clean it when putting it back on.Is that possible? I always thought with the little slot things they have it couldn't happen .... I may be wrong but unlikely [emoji12] Sent from my LG-D958 using Tapatalk
Breezer Posted April 5, 2017 Posted April 5, 2017 My mtb did that and the problem was the freebody. The grease was to thick inside. I used grease when I serviced it and the bearings inside was not running freely. . Use thinner oil and my problem was solved.
Captain Fastbastard Mayhem Posted April 5, 2017 Posted April 5, 2017 Is that possible? I always thought with the little slot things they have it couldn't happen .... I may be wrong but unlikely [emoji12] Sent from my LG-D958 using Tapatalkit can happen if you flip it... there's only one slot that's smller than the rest.
V12man Posted April 5, 2017 Posted April 5, 2017 Is that possible? I always thought with the little slot things they have it couldn't happen .... I may be wrong but unlikely [emoji12] Sent from my LG-D958 using Tapatalk It is possible - there is one big one and the rest is symmetrical- whether it will have this effect I don't know, but shifting won't be so good. - worth a check.
NotSoBigBen Posted April 6, 2017 Posted April 6, 2017 it can happen if you flip it... there's only one slot that's smller than the rest. It is possible - there is one big one and the rest is symmetrical- whether it will have this effect I don't know, but shifting won't be so good. - worth a check. I'll just leave this here .....
NotSoBigBen Posted April 6, 2017 Posted April 6, 2017 Hmmmmmmmm. It bothered me the whole night why I thought it wasn't possible so had to go out and check this morning
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