M__Gorden
Guest
Having only run a N7 for a day, I don't claim to be qualified to offer advice that I know will work in your case. Until someone else jumps in here with better advice, here are my suggestions: Make sure your concave bars are in good shape (bar corners square). If not, have them hardsurfaced and ground back to square corners. St. John Welding in Redfield, SD and St. John, Kansas do this kind of work. Be sure your concave is leveled and run as tight as you can (just before rasp bars hit concave). Run the rotor fast or faster. Use filler strips that seal the front part of the concave to keep the heads in longer so you get them threshed the first time through. If you have adjustable transport vanes, adjust them to slow down the flow of crop so that you build more pressure in the rotor to get crop rubbing crop. If these steps give you a better thresh, you should be able to open your lower sieve setting a bit and still get a acceptable sample. This should reduce return grain which in turn should reduce rotor losses. If any of this helps you, let us all know. If I'm off base please feel free to set me straight!