http://calpusengineering.webs.com/ I took an old school bicycle and modified it to hold an engine. I took a two-cycle lawn mower engine and rotated the carb to make the shaft horizontal. Then I used a belt pulley for a manual clutch. The pulley goes to the normal bike chain which makes it a 7-speed! I can only get it up to fourth gear then the chain falls off, but thats around 50mph, fast enough for me on a bike. This thing runs really well its really fun to drive. I was a junior in high school when i finished this.
