We were riding today, and my riding partner asked me why wheels are 700c, and not say 750 mm, or 710, or 690 and so on. Why was 700 chosen as the standard size. I know that they are the same diameter as tubular tires, and so you can easily swap wheels without changing the brakes, and etc... But, why was the size tubulars, or 700c, or for that matter 27 in. made the standard size?
I have a guess, but I'd like to know if someone knows fer sher.