This go kart's frame is built up from steel
purchased from a hardware store. The steel comes in an angle iron
shape for rigidity. Holes every inch or so permit the frame to be
bolted together, almost like an erector set. The steel was cut using a
saws-all with a metal blade.
The wheels, axles, disc brakes, motor,
clutch, chain, sprocket, and bearings were all ordered from the web.
The seat is a $5 plastic chair with the legs cut off.
Like a professional Go-Kart, the rear axle is fixed so that both rear
wheels are powered, and they are both connected to the disk brake.