I worked in bike shops in my college years (1970s) and have always been a bike nut, but I don't recall when 700c wheels became the new standard. Why are 700c wheelsets considered an upgrade from stock 27"? I'm not sure I could tell the difference if I was riding a bike and didn't know what wheels were on it.
My other stupid question is when did rear spacing go from 120mm. to 126mm. to 130mm? I realize that it didn't happen overnight, but ballpark is OK. Just curious about that one.
I'm sure I could think of some other stupid questions, but that's enough for now. Feel free to post your own.
Feel like I dropped the ball somewhere this last couple of decades.