I fabricated the bearing support beam by laminating three pieces of 1/2” plywood and trimming it to 1 1/2” x 9×21 1/8” dimensions. I then drilled 11/32” holes in two edges to mate with holes in right and left ends of the carcass. The kit included four special half round washers to hold the bolts. The beam has the ability to be adjusted forward; the purpose is to tilt the lower wheel downward to off-set the tendency of the wheel to be lifted up by blade tension. Next I installed bearing blocks on the 3/4” drive shaft and bolted it to the beam. I positioned the shaft in the middle of the beam. Here’s the final product:
-- Jeff, "The things I make may be for others, but how I make them is for me."