The real burt munroe's bike, the movie didn't go into how he built it but there was alot of home made stuff that makes me laugh no matter how many times i read it.
spoke = micrometer
Dug up steam pipe, with aluminium rings = well aged barrel
Ford truck axles = cams for OHV quadcam prototype
cast pistons on the beach apparently
tractor axle = rods
The guy was a genious.