The internal model of the Chaincase designed and built in 2007/08 for the 2008 Model Bison Pullers 1/4 Scale tractor. It distributed power between a hydraulic motor input and the rear and front axles. It utilizes #40 chain and sprockets to reduce the drive ratio to the front axle, while driving direct to the rear axle spur gear drive.
Keywords
tractor, pulling, chain, gearbox, power, bison, pullers, 2008, chaincase, nurbs, solid, part