I am a noobie to the bike forums here, and particularly tandem (but not to biking). I have never seen one, and don't know beans about them. I commute every day and I also ride recreationally whenever I get the chance, and love nothing more than to go on a long ride with my girlfriend. I am toying with the idea of investing in a tandem bike for us, but have a few concerns. First, as the title this thread may suggest, I am 6'1" 260lbs and built like a line-backer. My girlfriend is 5'4" 120lbs and built like a cheerleader. I would be a better sprinter, and I prefer to keep my bike in the highest of gearing, as I much prefer to push 300 lbs once every four seconds than 60 lbs every second. (make any sense at all?) She would be the one to run a marathon, and would much prefer to push the 60 lbs every second, and can't imagine pushing 300 lbs, even once, and thus likes her gearing in the lower range, rarely coming off the smallest chainring. This is not to say that she could not keep up with me in a bike race. I don't know if this is a recipe for harmony or disaster on a tandem. So: Should I even consider a two-place, or should I leave it be, and pedal by her side? Can you give any recomendations on tandem bikes?