Combines hyper mod results and questions

I know very little about the Sunnybrook other than it is enclosed. What is the theory behind this rotorIJ At a farm show I once talked with George Kuchar about improving the performance of Gleaner rotories. He said the only thing he adds to these machines is a cylinder bar filler kit. He says that this kit keeps the material pushed against the cage for better seperation. He claims seperation is improved enough to reduce cylinder rpms by 100 or so. Appears to me that the Sunnybrook might do the sameIJ I can kind of see his point. One time in corn we removed all 8 low bars on sep side thinking that this would be one step up on the Hypers because with "no" bars (had forward bars on every other row and nothing on the others)it should surely slow material flow even more therefore decrease rotor loss. It failed miserably for us...rotor loss was terrible. We put the low bars back in and rotor loss was back to acceptable. We are not sure as to why it worked this way. We are thinking that the low bars were needed to keep the material against the cage. Anyway, just curious if the Sunnybrook is supposed to work along those linesIJ Thanks

Keeping the matieral compressed to the outside of the cage is one of the advantages of this rotor especially in corn where there is a lot more grain to spin out of the cage. Also the staggered bars help in the agitation of the grain mat to get more of the grain seperated out of the trash before it ends up on the spreaders. And the other advantage I like is there is no more trouble with it getting out of balance because of dirt sticking behind the rotor bars. This rotor solved our rotor loss problems in corn and it keeps things simple without a lot of lot of adjustments to keep the rotor losses down.

I would like to see a comparison of the weight of the Sunnybrook versus the p3 rotor. Need the mass to help carry through uneven feeding, etc.

I would think that installing a cylinder bar filler kit would only add to the out of balance problem unlike the Sunnybrook. We've never had any trouble getting out of balance in corn and soybeans but we used to a little when we still planted wheat. Kuchar says he gets $700.00 or so for filler bar kit...cheap if it works. What does a Sunnybrook runIJ Do you get yours out of lund'sIJ

I would think it would be hard to get a good seal with a filler bar kit. If it isn't sealed up real well and dirt gets in there you would have it get out of balance pretty fast. I did get ours out of lunds and we paid 2900 for the the complete rotor. I think that this is a pretty fair price when compared to rebuilding a oem rotor. It is very well built and does weigh more but I don't have the info of the exact weight, and it sure runs nice and smooth. I ran the rotor at 220 RPM in the corn and I was very happy with the performance.

I havn't seen anyone complain of low bars in wheat but unsure how many have tried it. We did install 8 low bars in a 72 half way threw a corn field and notice a large increase of whole cobs. We left the low bars in for spring wheat harvest the following season and had now troubles. Unsure about barley but I would sure give it a try. I would have normal height bars along and try prevent putting any more than one reverse bar in any one location to prevent excess hold up of material. Cylinder bars can be switched around without to much hassle with cylinder in the machine. I would leave F2 bars in for I believe you could remove in a hurry if you wanted to try without them. I would certainly leave the extended cylinder bars and helicals the way they are. As for growling and crop loss in corn you could look at a couple things depending how far you want to go. Maybe just cut one row of cross bars loose from seperator grate (like hyper cuts and moves half of them) so you can mount F2 rasp bars to wires to reduce growling. Also tbran mentioned a rasp bar from some other application that would have all rasps angled opposite crop flow.

The first helical extentions over feeder opening I made I had left the vertical crop flow divider out and used them holes to support the made up filler. In refining the idea I wondered about material sliping over to seperator side without being threshed. That is when I began cutting away enough of the crop flow director to fasten filler piece to it. In doing it this way the crop can not pass over to seperator without hitting concave first. I suppose a very small amount of material could still sneak off of concave but material will not move over to any extenct without the help of a helical and the angle of rasp combined. The extra helical protrudes onto cage to meet up with present third helical from gear box. I drill a hole in cage just beyond third helical to secure extra helical with a couple more in filler piece for that makes a very strong assembly. Make sure bolts holding in helical are as short as possible to prevent feed chain from catching if it should jump a cog. Rear feed stripper is very important in corn to prevent chain from jumping. Also remember that trap door setup could aggrivate rear chain. I like hump fastened to door to aid in feeding and helps sense a rock. Extreme rocky conditions should have sump and be emptied a time or two per day. We have made up and installed some wire support assemblied for the guys that need the sump. The wires support the crop as it travels over sump which reducing possible feeding problem and still lets the rocks fall. I'm too sorry this is so long but can't help myself sometimes.

I wonder if one reverse bar in any one section would hurt you in soybeans. I know that two in any one section can kill the machine when going is tough.

I thank you Dan for your detail post. I won't get to this til next summer, so I'll print and keep your comments to help then. Thanks again.