Was pulling a hill yesterday and remembered back to when I was a kid with a single speed bike, I use to come off the seat to pedal. Would get more weight, i.e. power to the wheels that way. Tried that on my Schwinn Trailways hybrid and immediately felt unsteady. Left me with the impression my body weight was too far forward for the bike. Are today's frame's that much shorter then the old American bikes use to be? Could also be due to my age and not having pedaled that way for 50 years.