Primary Fades - Dave Lloyd 753 -> Serotta tri-colorado

http://www.cervelo.com/en/engineering/ask-the-engineers/what-is-your-opinion-on-650c-vs-700c-for-smaller-cyclists-.html

2) Gearing: The smaller wheel has to spin 8% faster to go the same road speed. But that’s no problem, just change to a harder gear. Changing your gear works because the wheel radius is just one lever in a system of levers between your foot and the road. Crank length, chain ring and cog sizes are the other levers. The 650C wheel is 8% smaller, so just choose an 8% higher gear. For example, install a cassette starting with an 11 tooth instead of 12 tooth cog to get 8% more gear. (Such a cassette might also have a 23 instead of a 25; that’s an 8% difference too.)