Who is into Tractors ??

This is as close as I can come to the "roots" of the blue tractor. Early graders were essentially redesigned "towed" graders with a power unit hooked to the rear. Some actually used tractors. The blue tractor was made from the belly pan/ engine/ rear of "something like this"





Another type of early grader



There were all sorts of small graders made with Ford, Allis, Farmall, and other tractor drive units