West Union, Illinois | Versatile Farmer - Can anyone tell me exactly how they work? Go to the PP site others mentioned and look around. My opinion is the original JD plates worked off some assumptions that later proved wrong. I think it was assumed the disks had to have the indents to hold the seed. With a little higher vacuum this was shown to be an error. But by then JD had so much invested, not only in dollars but in reputation, that it had trouble admitting it was wrong. The flat disk with adequate vacuum will hold most any seed size and shapeThe other issue esets addresses (and I seem top recall part of the discovery of this was due to advances in photographic equipment) was the realization that the seed was rolling out of the indentations and bouncing on the way to the ground. This is the reason Precision Planting's disk is thicker than the stock Deere. The seed falls straight off the disk straight down the tube. Taking the bounce out of the delivery took the variation out and returned the precision spacing the meter had when the seed was released.
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Question on esets
