OK, so I was looking around the internet and found a branch of biking called gravity biking. This is where people ride these small, aerodynamic bikes with no pedals down huge hills. I then found a site where a guy flipped a bmx frame upside-down to make one of these cool bikes, and thought I would try it myself. I don't have any bmx bikes but I do have a 13" Gary Fisher tarpon. I removed the chain, switched the headset bearing cups, and flipped the forks. I also put a different set of handle bars on so they would be lowered, put the old rack on upside-down to act as a seat, and have yet to remove the cranks. I also added some foot pegs. I did some geometry and the trail measurement on the flipped frame was triple that of the normal frame. This will make the bike excellent at what it was made for, being extremely steady at high speed in strait lines.