Combines Wheat settings with specialty rotor

[Farm_Kid2]

Which grates do you have in, slotted or keystockIJ What size of header and how fast were you running in the 12-15 bu wheatIJ What type of lower seive and chaffer seiveIJ

 

[John_W]

I recommend you check with this sites sponsor and his Gordon bars for speciality rotors. Check the "attachment" topic to the left. I copied some of his stuff to give you a quick look. The Gorden Rotor Bars, when installed in the specialty rotor, offer these advantages: The superior threshing action of the standard rotor. Reduces the amount of un-threshed grain sent to the cleaning system. Corn cob breakage is noticeably less. Helps reduce rotor loss because separation begins sooner in the concaves Increases harvesting capacity while using less fuel. The efficient flow of tough material through the specialty rotor. less wear of the bars.

 

[Mountain_Doo]

Slotted grates with bars on the outside. 30 foot 1020 and running about 6 mph. Sieves are factory, but I'm unsure of the size.

 

[Farm_Kid2]

Mountain, Ill take a stab at diagnosing your machine via cyberspace. First let me say that Im impressed with the effort that you put into setting it. Most folks will just take the dock and go on. At 6 mph in 15 bu wheat with a 30ft head you are probably putting about the same amount of material through it that we do with a 25ft head in 60 bu wheat at 1.8 mph. That really just isnt enough material to build up threshing pressure between the rotor bars and the concaves. You probably could have used 4 cover plates in those conditions to help you get the white caps threshed. The factory rotor bars have a heck of a time in tough-threshing wheat because they are so short. You need a longer bar to help force the material against the concaves. With the factory specialty bar too much material can flow between the bars and essentially get augered back to the rear of the machine unthreshed. The Gorden Rotor Bars (or the standard rotor) would have almost certainly helped you out in those conditions. Setting the concave clearance to zero was the correct thing to do and speeding up the rotor is also required to help with the threshing, until you get to cracking more grain than you want to. To help minimize the rotor loss, you can slow down the vanes (put them to the least angle) and then start taking the bars off the outside of the slotted grates, starting at the rear grate and working forward, until you get the loss down to what you want. At this point, you may have a bunch of chaff falling through the chaffer and ending up in the return elevator. Keep the fan at full speed. I think about all you can do is close the lower sieve down to keep the clean grain reasonably clean, then close the front of the chaffer (or cover it up with a piece of tin) to try to keep the MOG suspended the best you can. The Future Farming air deflector really does a wonderful job here, because the air is essentially dead even across both sieves, front to rear, and the air stream is at a flatter angle to help move the material out the rear of the machine. Without the deflector, you may just have to slow the machine down if the return elevator starts plugging. I know that sucks, I ran one like that for a long time, but there isnt much else to do. If ANYONE has some more tricks, input , or suggestions, I would love to hear them. Mike

 

[tj]

I'd suggest that you remove the interrupters in the concave as a start. When these are installed, they cut down the spacing between the concave crossbars and material can't be retarded well enough to thresh. This allows stalks and stems to pass over the front concave section without much grain being dislodged, and deposited on the 2nd section where you'll still see whitecapping. The problem is compounded with a specialty rotor, because stems can wrap around the mounts instead of being swept to the concave surface. With the way you're set up, it appears that you're threshing and separating in the same area, basically, and are required to try to force the grain thru the straw instead of allowing rotor rotation and vane transits to spread the material. Hope this is clear.

 

[dfg]

Personally, I know I am becoming a broken record on this directory, but that air deflector from Future Farm Solutions absolutely changed my combine. I have a long winded explanation in the posts below. I am convinced and so are you , when you do a stall to check, yes, thrash it first. Next, you know alreay, the return elevator is more chaff than grain. This is an eternal problem with Case IH machines. If you do not believe, follow a Gleaner around, the chaff never touches the sieves because the wind is directed effectively. What happens next is the return elevator is doing its job, returning unthrashed grain into the rotor. My best description of what my problem was, is a combine with a chest cold!! Remove the congestion (chaff) and let the machine do its work! This improved my capacity and reduced lossed considerably. Keep the Case IH combine, you will not get a better combine out there, just get it working properly.

 

[Mountain_Doo]

Thanks Farm Kid2 and thanks Doogie. I was tempted to buy the Future Farm Solutions deflector, but when I spoke to him, he didn't have any left in Canada. He could have got one for me out of Montana, but with such a bad drought this year, I elected to keep the wallet sealed tight. In the end, I suspect that was a poor decision as the dockage on this 250 acres of wheat might have paid for the kit.