Every project should contain a certain element of fun, but some are all about fun. That happens to be the case this week in the garage, as I tackled building up a mini-bike with my friend Kyle (a different Kyle). He travels to events at racetracks regularly and wanted a vehicle for riding around easily and quickly but without breaking the bank. We searched for bargain pit bike,s but the cash outlay for a Honda CRF50, Yamaha TTR90, or other centrifugal-clutch thumper just didn't make sense to us. So we decided to build something to fit the bill.