Hagen Brothers farms,Goodrich ND | I have no experience with JD rotor machines or that brand concave, but with my old 14 series IH combines with Harvest large wire concaves, I need cover plates on the front 1/2 of the concave to keep the crop on them long enough for a good thresh. Wheat from a Shelbourne stripper header is broken up pretty fine, what comes up the feeder house is about like the stuff you normally find in the tailings elevator, so is tough to keep on an open concave.
Your round bar concave with cover plates may do the job if you run the concave tighter and rotor faster than normal to get all the wheat threshed..
We do, even in hard threshing spring wheat, using a large spacing concave with very wide wire spacing. Cover plates are cheap, concaves are expensive and hard to change. We can run the same wide spaced concaves in everything from tiny flax seeds, to spring wheat, to soybeans to large field pea, just by adding / removing cover plates (20 minute job.) |
Precision Farm concave with shelborne stripper header
