Combines CDF for N seriesIJ

Kirk, I know that reverser bars are not a popular item on this site. However, it was the only way we have found to make the HYPER mods in our P1 and P3 combines work in corn. As for our P1 combine we did all the mods including sep. grate. We saw absolutly no power loss by installing two reversers in "high" positions on seperator side. I think the rest of the mods, most noteably the channel helicals make such a difference that we still see no power problems. We can run as fast as 2nd gear will go in 200+ bpa corn at 200-250 rpms and never even see the boost pressure needle wiggle. Installing reversers cut rotor loss from .75+ bpa to .25 bpa. Would like to hear how your idea works if you try. Good luck.

Brian, Did you notice any more cob breakage with the reverse bars back inIJ I suppose with the high_low configuration the constipation caused by the reverse bars is minimized because the next bar coming around would be a low forward bar instead of one the same height. As I think about this, you might get more tumbling action by temporarily holding up the material with a reverse bar,getting it tumbling with a low forward bar, then moving again with the forward bars and the channel helicals. Hey Gleaner Guru's, please critique my theory, not saying it is right nor am I going to put the reverse bars back in but it is food for thought. Pete Hinrichsen

No difference in cob breakage that I can see. Seems to me that most cobs must get broke up over concave. For corn we make sure concave has a good 3_4" wedge...that helps a bunch. For beans we take the wedge out so we do not get pods. Brian

Installed eight half height bars on seperator side of a large P3 half way threw corn field a few years ago. It was very noticeable that there were more hole cobs with half height bars. Never tried any reverse bars with this setup so can't say what they would of done. I can say that just two reverse bars spinning in row B on R62 in tough conditions limited us to 2.5 to 3mph. Spent 1_2hour to replace them bars with forward and jumped to right up to 5.5mph. That was on standard Gleaner rotor with bars extended to discharge and all at normal height. Now today we have shrunk rotors, helical tricks, sweeps,ect. So the time may be coming that I try a reverse bar or two but only if normal adjustments don't do the trick. How do you have your P3 set upIJ Two reverse bars spinning in Row A (row next to discharge) and two spinning in row BIJ Do you feel you need the reverse bars in soybeans and do you run out of power before you can't cut cleanIJ Thanks

Dan, I beleive everyone, including myself, are talking about only P1 machines, and the effect of reversers, or making a psudo CDF on the seperator section. Thanks for your interest, and more insight is always welcome. Kirk

Sorry Kirk. I saw Brian mentioned P3 and I must of blew off what original question was. Ok on CDF you must remember the kickers and or cutters that are fastened between the bars on seperator side. I think the kickers are equally as important as the reduced diameter and less bars. A guy could get close to this with running six bars at 24" and then fabricate kickers to flat bar at other two locations. I wonder if Hyper has tried something close to this. Main things we did to P1s is shim helicals (better yet channel helicals),remove reverse bars, and install four paddle discharge. This was all we needed to do to get em flying in our conditions and the little corn we have didn't matter. Have a good one.

We have standard cylinder bar configuration. That is-two reversers in A and B with all normal height bars. The mods we kept with P3 was to replace flow divider with piece of helical, run helicals into discharge, and extended cylinder bars. The reversers reduce rotor loss in soybeans ever so slightly. We are as close to zero as we think possible but without reversers rotor loss was still okay. We have not had power problems in either crop. We run an 830 with Crary Air Reel so feeding is very even! We often run beans well into dewy nights with very little difference in capacity vs. the day. I might add that we run cylinder speeds from 400-600 rpms to maintain good quality seed beans. Back to cobs. We break up more than we would like too but feel the half height bars and no reversers didn't break up enough less to justify more rotor loss. If the CDF can spit out whole cobs with no negative side effects then I can't imagine what top-end will be in corn as we are only limited now with too much on shoe (if wanting picture perfect clean),especially in wet corn.