The Cannon boys built this oversized gokart. It had an aircraft engine sideways. The engine was aircooled flat (boxer) 6 cylinder a little over 300 cubic inches.
The frame was made of thin sheet metal to be as light as possible.
The engine power went through one of two chains, selected with a Ford synchronizer. Two speeds, no reverse.
Semi elliptical rear springs going back to a solid tubular axle. The axle bearings were Ford flathead main bearings. The axle had a hole over each bearing and a hole in the middle. The one in the middle was drilled and tapped for a pipe plug so they could dribble a little oil in it from time to time.