Okay, I bet this is in here somewhere, but I did a search and didn't come up with anything that made sense to me. Right..so I'm at work trying to look busy by surfing. Looking at road bikes. I'm noticing that the 'front end' of some top tubes are lower than the rear. Or the opposite. Or they're completely horizontal. What's the purpose of that? I have an idea of how it would physically feel different, but I want to know which would be better for what size person, what kind of ride, etc. I don't know all the technical terms so please keep that in mind, and be very specific! I'm still learning! Thanks lots..
Nat