I wanted to keep it simple when it came to building this mini bike and not spend a lot of money. I found this doodlebug on craigslist for $37, the engine had been messed with and didn't run. I've wanted a my own mini bike since I was a kid and now I have it. Swaped in a Harbor Freight 6.5 HP motor, new clutch, chain, throttle cable, and paint I was ready to ride.