CX bike chain jumping off under load

[ecsrobin]

Evening gents,

Recently I picked up a Ridley X-Bow 10 Disc and after a few days I noticed that in high gears if I put a heavy load on the chain jumps off. Originally I thought this was just because it's a new bike and cables are stretching so today I adjusted all the cables.

I'm still finding that if I'm in the big ring on a high gear it's jumping. An example would be I'm building up speed and working through the gears, no issues. I then stop pedalling for a moment then start pedalling again, the chain will come off. Now me and my ride are both experienced in the world of bikes but are stumped as to the cause of this.

The bike will be going back to the shop for its 6 week checkup slightly early because of this but I'm interested to know what you all think so I can possibly remedy it prior to finding the time to get to the shop.

[IroningMan]

Could be a tight link not feeding onto the cassette properly - higher gears mean smaller cogs so more movement needed from each link.

[samj2014]

Jumps off how? Into spokes? Over bottom of cassette? Is it skipping on the chainring or cassette as you put power down?

[ecsrobin]

samj2014 said:

Jumps off how? Into spokes? Over bottom of cassette? Is it skipping on the chainring or cassette as you put power down?

It's jumping off the chainring when I put the power down.