NDDan
Guest
FYI- Rock sump or trap hides problem in cylinder. Three helicals purposly drop straw back down on feeder rock door area. Steep pitch helicals helps prevent this, helical filler across feeder opening for the standard pitch helicals helps a bunch, Installing a piece of steep pitch helical to second helical to drop straw on your allready added feeder filler helps a bunch, Rotor sweeps on seperator side helps a bunch (prevents stalling straw on seperator side from backing up into concave trap door area). Sumps can hurt the smooth feeding to cylinder in some conditions and that is why we install fingers over the sump if one must have a sump. Another problem with sumps is the guys just won't clean them out often enough and then they lose all rock portection. I'd much prefer the hump and then set up rotor to prevent constipation from opening the door. Just my $.02. Take care