The Gleaner Experimental combine: The "635"

Gleaner Engineers began to work on a much larger Conventional combine, which was given the model designation of "635", It had a separator width of 63.5 inches and was designed to be a "super" conventional combine much bigger then the Gleaner "L" Combine. The basic design for the "635" was based on the Model "G" Gleaner's design with closed concaves and open bottom Walkers. Later on these Walkers were changed in the "L" Gleaner to increase capacity.

The "635" combine had six Walkers and the cylinder was 54 inches wide or 10 inches wider then the Gleaner "G". The combine ended up being much wider then intended, making for it to be a difficult combine for transport on narrow roads. The 635 required bigger tires, and overall the "635" was 24 inches wider then the "L" Gleaner. The "635" had steering controls on the back and special transmission gears to allow the combine to be driven in reverse at speeds up to 40KPH. The "635" combine prototype was powered by a 350 cubic inch Chevy gas engine with about 120HP. Test shows that the Gleaner "Super Conventional" combine could not be increased in size without widening the machine. Gleaner engineers realized that the Conventional Gleaner combine design had reached it's limits.

Had The "635" made it into production, its hard to say what model designation the combine would have actually had if it reached production. Also it must have been pretty interesting for the Gleaner engineers who drove the "635" combine in reverse speeds of up to 40KPH.

Gleaner would eventually have a "Super Conventional" combine when they brought out the Gleaner C62 in 1998.