Originally Posted by Ironfish653

Stomping on a big gear will do it. Think about trying to make a fast 'track start' in your big gear.
Also, usually happens where you've 'broken' and fastened the chain by driving the pin with a chain tool (old-school style) and didn't get it set evenly. One side-plate gets loose, and that's all she wrote.

I've done it MTB'ing a few times, giving it a really hard, out-of-the-saddle full-weight slam to get some extra power to get over something, or get started after 'stalling out', always though, trying to muscle a too-big gear.

It has been a long time since i've broken one, though. I'm stronger and faster than i was 20 years ago, but i'm also smoother, and make better use of my gears. My bikes also all have quick-link chains on them, so driving pins is an emergency repair only.