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Kingston, Iowa | This thing works real similar to the CCS System as both are pressurized. I built it 2 years before Deere offered theirs.
The picture I showed didn't have the hoses attached to the manifold from where the fan is attached. There is also a rectangular tube that runs from there to the top of the box on the inside to pressurize it. The big box has to be pressurized to keep the air and beans flowing out, otherwise the air just escapes thru the lid. (Tried filling the little boxes with the lid open once, didn't work.)
Slot size on the emt is a little hard for me to remember right now. I think there is close to 1 1/4 inches left at the top and about 1/2 to 3/4 at the bottom.
In the picture I showed of the manifold on the sawhorses, that is open to the bottom of the box so beans sit directly on the manifold. Haven't had em plug due to transport. The hoses don't fill with beans they stop right at the outlet in the small boxes.
Based on my experience last year I think you could tee the hoses and have good results. The manifold for mine is close to 5 foot long. I attached the hoses with a pvc slip collar with the 1 & 1/4 inch bushing in it so I needed a little extra room to tighten those up on it.
If this is going to be a dedicated bean planter, and your going to notill with it I would do everything I could to make it an even row machine. It will make life a whole lot simpler trying to split rows. I built this box with 16 ports in it. At the very least it will have 16 rows on it next year, if not 24.
I can probably get some more detailed pic's but the planter is setting at the north place and it may be awhile before I get up there.
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