Hi Scotty, If I remember right, two farmers up in North Dakota dreamed up this little idea, which is just pretty darned slick. That hydraulic pump runs a big fan at the rear of the seed hopper (first picture). 11 oz of air pressure is created and forced into the hopper, the drum feed chute underneath, the seed drum itself and then out to the planter shoes via air tubes. The seed falls from the hopper into the seed drum (second picture) via a chute and then the seed will try to escape out of those little holes in the drum. The holes are too small for the seed to get out, so it is "caught" and held in the holes by the escaping air as it rotates. The drum turns with ground travel driven by the tires, and as the drum rotates, the seed is brought up under those 6 little black 'drop wheels'. As the little wheels travel across the holes in the rotating drum, they cut off the escaping air forcing the seed to then drop down into a manifold, which is hooked to each row's seed tube. Since the tubes are pressurized as well, the seed then "flies" out to the shoe. Yes, the little white boxes put on the insecticide via the planters ground driven press wheels. Allan
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