Quote Originally Posted by SadieKate
I agree with Irulan. Shifting under load can do cause damage and if things are tuned up perfectly you can cause even more damage.
Let's just say that shifting under load has taught me lots about chain suck, and how not to shift under load.

I think I was on the MRT when I finally got it: that chain got sucked so good I thought I was going to have to hike right out of there, and one of the guys on my ride gave me a little talking to about how to (not) shift.