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My drivetrain is playing up and I can't work out what's wrong. Save me money taking it to the LBS.
SRAM 1x11, a combination of NX and GX. Shifts fine in the bigger cogs, but when I get down into the smaller ones (the bottom four) the chain slips off the (narrow-wide) chainring. I thought it might be dirt and grime related, but it still does it after a thorough clean. Shifting at the back is absolutely fine, it moves up and down the cogs, indexing fine. Limit screws are in the right place - it's not slipping off at the back.
I did lose a link a ride or so ago, and replaced it with a quicklink, but seems odd that that could be related. I do have a spare chain that I can fit, but if there's something I can fiddle with to fix this I'd rather do that, and if its likely to be a hangar or derailer issue then that'd be a waste of time anyway right?
YOU do have the wide part of the links on the wide teeth?
Many miles on the front ring ? I was getting a similar problem when things started getting worn, went away with new front ring I went with a top chain guide in the end.
I do indeed. The bike just doesn't want to stay that way.
No - front ring has only done about 2-300 miles
Why did you lose a link in the chain? If you damaged it, could there be a twist left in the inner plate that's combining with the (probably) godawful chainline in those sprockets, or their tighter radius, and causing it to come off, or maybe you've damaged the teeth on the sprocket as well.
Check your front ring for a bent tooth. I had that, kept kicking my chain up, but only in certain gears. At the time I had a front derailleur so it didn't come off.
Another thing, to check, is the quicklink.
I recently had something similar, after replacing a broken quicklink. Finally tracked it down to the part where the pin is riveted to the plate being slightly "mushroomed", causing it to ride up over adjacent cogs.
It was intermittent - i.e, not everyone the link went round the cog - because it depended on the position of the teeth on each revolution.
New quicklink solved it.