http://www.sheldonbrown.com/gain.html
Right, same thing, yeah. But almost certainly expressed better. So what I'm wondering is whether gain ratio + downwards force or cadence is more important. Probably a bit of both really - if you increase either too much you're going to hurt yourself
I'll let @mdcc_tester summarise his experiments with short cranks and cadence
@frankenbike started
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http://www.sheldonbrown.com/gain.html