I am in the midst of build a rubber track machine. I am using snowmobile tracks. I am using the tub froma 1988 max 6x6 amphibious vehicle. It has 2 hydraulic wheel motors on the front tubed axle. The white wheels are going to be the drive sprockets. I am welding 2"x 3/16 flat bar across the rims for the teeth. The will be 4 boogies with the last one being the tensiner idler. The machine is going to be like a high sprocket cat dozer but (backwards) drives are in the front. I am splicing 2 tracks together per side