I spend most of my rides exclusively in the big ring and shift to the small when I get home. Recently, the chain has started landing in between the rings. If I don't pedal, I can easily put it back on but if I put some power to it, it can get jammed in there.
Due to a separate issue, I have replaced the chain and this happened with old and new.
Is there something that could be worn to cause this? It a Cervelo R3 with Ultegra components.
Thanks
by arawks
5 Comments
Seems like you just need to adjust your front derailleur slightly so it shifts cleanly.
Park Tools has a great YT video on this. Very manageable piece of bike maintenance.
That should be impossible. I suggest the spacing is wrong. – is the small ring on backwards?
When was the last time you serviced your chainrings?
This can happen if your inner chainring is installed the wrong way round. Also if your outer chainring has excessive wear to the teeth. There are pins on the inner surface of the bigger chainring that should protect against this.
Maybe remove your chainrings, clean and reinstall if you are confident doing so, or replace altogether. Failing that, LBS
It looks like your inner chainring is on backwards.
Looks like your chainring is flipped backwards