I am tootling around on my Dahon Speed and enjoying it more and more...but the other day I can down an overpass - well, I had to go up it first - and started to pick up speed...so I started to upshift to go faster and when I was in 7th gear I was starting to get a bit apprehensive about it all.

What are the limits with this bike? The brakes seem to be very good - am I dealing mostly with the psychological issue? If I adjust my seating position will it make any difference? Raise/lower the handle bars?

BTW, I like my bike...almost as much as I liked the dog I had when I was just a little pup..and more than I like most people