Today I cut up a BMX bike because it has a tube with a large diameter; this will be what my seat is going to be attached to. It will be part of the gas tank and the coil over shock will be attached to it. I also converted the back end of a mountain bike that originally used a 24" tire so that I can use a 26" tire. For this I wanted to keep the petals attached to the rear tire so I cut off everything except where the petal attached to the rear of the bike. I did not cut the petals off so that I would not have to align them later. I wanted the bigger tires so I will get a higher top speed. The reason why I will have a higher top speed is because one rotation of the sprocket rotates the big tire once. And if you have a bigger tire and a smaller sprocket then it takes less rpm’s at the driven sprocket.