robes69

I couldn't agree more. There are all sorts of physiological advantages to mixing up your cadence from spinning to standing and grinding, this over geared rear cluster marketing race is expensive, fiddly and predictable. It's a bit sad watching so many people scurrying to fall in with this sheep race. Although they can provide an all over body workout, single speeds have limitations. I look forward to progressive bike designers who introduce very wide ratios with limited cog counts; four, say.