I have never figured this out - why is it I can ride a "comfort bike" with a wide, soft seat, wearing normal shorts and not have big problems (I even did a century once!).
But as soon as I get a road bike, if I don't wear bike shorts, I'll know it either right away or within a few miles?
At first I thought it had to do with the seat, but everyone says a wider, solfter seat will cause MORE problems.
So, I could ask the question this way: Why is a narrow, hard saddle necessary on a road bike to avoid pain, but not on a comfort bike?
The only thing I can think of is the position of the body - leaning forward a lot more on a road style bike.
Recumbent riders can also apparently wear normal shorts, but they aren't leaning forward either.
So, what's the deal on all this?
BTW, I hate having to wear bike shorts, but see no way around it and still have a fast bike (other than a recumbent).