The frame is 1" square tubing with 1/2"
square tubing for the truss. The fat wheels came from a chopper-type bicycle I bought just for the wheels. The headstock and
steering pieces came from a battered 10-speed bicycle ($8). The steering rim
and rear brake came from a little girls bike ($15). Other bits-n-pieces came
from local hardware stores, the Internet, and the remainder from my garage stockpiles.
Minus my time, the cost for this was about $300. Science can be
cheap.Click
here to see daily notes from the development and trial runs of the Test
Mule.
