Heider Friction Drive 1918

[Wingnut]

Heider Friction Drive 1918
The entire engine in this tractor slid forward or backward to speed up or reverse the tractor's direction.
Heider No Gears to Strip! (http://www.gasenginemagazine.com/archive/1003/friction-drive.html)

[Wingnut]

Sure there is no gears to strip, but rubberband around the flywheel can cause a lot of slippage!

[Wingnut]

The was one of the first successful tractors with a light weight design (4500 lbs.)
Collector Value is present state $10,000