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[NDDan]

Are you starting your sweeps at right hand side of seperator grate for long rotors also nowIJ I overlap onto concave an inch or so because I need to use up complete area of removed bars plus that transition area from thresher to seperator shows at least a couple times the wear of other areas in cage prior to using sweeps. Any reason you see you can't start sweeps 180 from each other on long rotors alsoIJ I can't speak for knifes on CDF but if I cut material with sickle knifes protruded threw cage is will take power. If picking a windrow that has some allready threshed crop from spreader laying on it it will take power. This is why I will do anything I can to get material to chopper without grinding or chopping it up. I think the more intact but spread out you keep it the better the seperation. A couple excellant reports come in from using sweeps in milo. I bet you have heard the same. Have a good day.

 

[tj]

We've always started sweeps at the R_H side of the grate. We don't remove a bar at the beginning of the sweep traverse, although the option is available -- we feel that we want material to move straight across the concave crossbars. Yes, we could install sweeps 180 deg. straight across on the long rotors, and may add mounts for these as an option. Present sweeps are 180 deg., but are corkscrewed -- 1st sweep, skip a row, then another sweep. 2 long sweps cover about 240 degrees of the rotor rotation and about 30" of the grate. We also install mounts for short intermediate sweeps to connect the 2 original long ones. This gives a full 360 deg. of sweep, fully across the grate if it's ever needed. We want to agitate trash as much as push it sideways and adding opposing sweeps might actually thin the load too much, negating the resistance of the grate crossbars for separation -- don't know this for sure -- it's opinion. When material is ground up or chopped it's hard for the cage helicals to force it sideways. The trash has to build up against the helicals in order to be moved. This takes place across the full width of the cage, and there's no question that it consumes power. Sweeps pretty much take care of this problem if it happens. Also, mounting the bars flatly as we do prevents quite a bit of pulverizing of trash.