Dura-Ace 7800 Crank with 7900 chain...skating?

[Pierre]

Hi,
I'm running a 7800 drivechain but changed out my chain for a 7900 version at the beginning of the season. Overall, the chain has been great.

Only one minor issue - every once in a while, if I'm in the 14/15 or 16 cog and I shift from my big ring to my small ring the chain skates between the two rings.

Has anyone else experienced this? Are there compatibility issues I should be aware off?

[Richard]

I run that set up and have no issues. Only time I ever did was when I was running 9 or 10 speed gears and chain on 8 speed cranks and 8 speed front derailleur.

That said, I could adjust it out, but it was a touchy adjustment. I think your problem is an adjustment issue.

[rice rocket]

Did you flip the chain? The new Shimano chains are directional.

[slidey]

Same setup, buttery smooth shifting...on all my bikes.

[yoshirider]

no problems here either

[Pierre]

Old post but you guys will laugh at root cause of my issue: my front ring (39 tooth) was on backwards. Embarassed, yes.