JohnW wrote:Ah, yes tc, but is he "just" an athlete or is he a "cyclist" in the broadest sense of the word
Aside: Graeme Obree is a truly remarkable man and his book ("The Flying Scotsman") is IMO one of the all-time cycling books. I'm told it's quite different to the film, though I haven't seen that. Not sure where you're going with this "broadest sense" argument, surely an athlete is just as much a cyclist in the broadest sense as a tourer or a commuter or even a BMX trials rider?
There's no intrinsic reason that pushing big gears should be damaging to the knees provided you take appropriate precautions (approach it one stage a at a time, don't tackle more than you're ready for, warm up properly, don't push through pain, etc etc). I wouldn't recommend it to just anyone but if you know your limits and know when to back off it doesn't follow automatically that you're ruining your knees. Look at what the weightlifters/powerlifters are doing - cycling really doesn't come close.
None of which is meant to detract from the point that smaller gears are useful, of course. I admire the fixie riders, but I'd rather get up steep hills faster/with less effort than be admired for managing to get up them at all ...