Experimental Flywheel, I'm Sure
OK, first a couple things...one is that I found this photo here, and the second is...are you kidding me? Does anyone see the oddness of this guy's fly wheel...I can't even imagine what his gear ratio was. It must have taken knee-damaging strength to start off, but the warp-speed at which he was probably able to propel himself was likely even more unnerving. The photo is simply titled "tall geared Russian." I can't vouch if the guy is actually Russian or not...but his gear certainly is tall.