Hiya,

I have just got a nice second hand Felt F85. It's practically brand new and seems like a great bike. I am new to road riding and have a quick question.

When shifting from the big ring to little ring on the front, sometimes, especially if I am in a high gear on the rear, the chain does not click properly into the teeth, and grinds horribly on the chainring. It has only done it twice but already caused a bit of wear that I'm really annoyed about...

Sheldon Brown mentions, "you should never use small-small combinations anyway". Is this the problem, should I just not be using small-small at all? Why is this? Even so the chain should surely not be grinding on the chainring! How can I stop it?

Thanks.