Making Tracks with Crawler Tractors

Tractor expert Bob Pripps traces the evolution of crawler tractor steering systems.

Trackson Co., Milwaukee, made a name for itself with crawler conversions for the then-popular Fordson tractor. It soon determined that the same arrangement could be made for other wheel tractors such as this 1930 Case Model C. For the conversion, rear track sprockets replaced the drive wheels and large brake drums were added. Brake shoes contracted on the drums activated by linkage from the steering wheel, causing the tractor to turn. McCormick-Deering 10-20s were also converted.
Image courtesy Robert N. Pripps