Combines need some advise

[chadh]

you only harvest 400ac a year and have a 2388IJ

 

[davy]

You need to get the shelled corn out of the rotor as soon as possible and onto the auger bed. You have too many kernels in the rotor when in the separator area. I would definately remove every other wire in the last two concaves and keep rotor speed to no more than 400. I'm no expert on this but a concave setting as wide as 5 may be encouraging cob breakage. Hope your the harvest in your area is better than the one I'm looking to in Iowa this year, we are way too dry!!

 

[ihman]

that's kinda what I thought, we farm 1100 and still can't afford a 2388. But anyway I would try pulling every other wire out of your concaves, we had the same problem when we went to the axial flow, pulled every other wire out and that solved the problem. good luck Brad NC. IN.

 

[Takn4aFool]

I was thinking the same thing about the acreage, buts thats beside the point. Have you ever checked that the digital readout is calibrated to what the indicator on the side says it is set at. Just because it says 5 doesnt mean thats what its set for, BTW the outside indicator is read useing the top side of it.

 

[sowega_corn_grower]

The concave is at 5. I have looked at the setting on the outside also. I am in an area south Georgia and we have limited time to get the crop out. We use a grain cart so I will not have to stop. We can gather about 11000 bu. per day. Southern rust plays a big role in corn here, and one or two good storms drop or average from 220 to 160. This is the only way to justify the 2388. We will also run it about 15 years. The only reason for changing to from the 1688 was to get the factory installed monitor. We have to grow corn for rotational purposes or our other crops would not do very well. reniform nem. eat our lunch. 2 years of cotton back to back would decrease our yield by 400lbs. So I attribute some of the expense to the other crops. Our basis is good at about 20cents over sept. We grossed 525. an acre this year, but I have seen many farmers that will not gather there crop due to lack of suffient harvesting equipment. It may seem hard to understand why I can justify this machine, but I do not carry insurance and am totally irrigated on 1200 acres. The math tells me that I have to much to lose if I can not get it out. Anyway I am not very happy with the specialty rotor at this point and do appreciate all the advise given to me.

 

[dave_morgan]

here in southwest Indiana almost all spec rotors come from the dealer with at least one row of double rotor bars like Marvin Gorden has...The more Gorden rotor bars the better, they will work the corn out of the rotor cage a lot sooner in high yielding corn. to set up our spec rotor we start by the book, then slow the rotor until it just starts to leave corn on the cob then speed it up until it doesn't...then we open the concave until it begins to leave corn on the cob, then close it until it doesn't. We have all the large wires in our concaves, have ran corn yielding 220 bpa with no problems, however most people take out every other wire in the second and third concaves. ---Too much concave clearance can cause green or damp corn leaves and other trash to collect on the concaves and not let the corn thru causing rotor loss...Check your concave to see if it is stopped up with MOG.

 

[mid_west]

What size corn head you runningIJ I'm betting a 6 row. The key to this machine is keeping the rotor full all the time, not only does the rotor action thresh the crop but the crop rubbing against itself threshes the crop. If you aren't harvesting soybeans, then you really have the wrong rotor in the machine. But the rotor will work in corn. If you drop your concaves too much then the crop will set on them and more or less plug them up. I'd set it no lower than 3 maybe 4. Run the rotor speed at 350. I'm not sure about adjusting the vanes....it depends on your harvest conditions....if its damp out and you slow up the crop too much you will get rotor rumble...but if this is not a problem, then retard the vanes all the way...so the crop goes around more. Running the concaves tighter may put more stuff on the sieves and this might help the blow over situation but what happens when you slow the fan down, if you're blowing corn over the back that's what you have to do. good luck

 

[sowega_corn_grower]

Thanks for all the input. You are right I am running a 6 row head. I can turn around and see kernels in the rows I am pulling. I have straight rasp bars in the back of the rotor, but was wondering how to optimize this rotor without the expense of a new one. thanks again.

 

[dave_morgan]

just to clarify straight bars also go in front of rotor, front row first, then as many rows as you feel like you can justify. we are also running a six row head but on a 1688 with a spec rotor. will have an air jet chaffer for corn this fall on another note, can you check your returnsIJ..if you are running a lot of returns they could also cause rotor loss...amount of material running thru the return is a lot more important that most operators give thought about. hate to appear to be harping on selling MGs products, but the air jet chaffer is also a wise investment for capacity and more importantly grain quality.

 

[Ohio__Steve]

If you don't already have them in, Keystock grates will help and if you do and considerable amount of shucks are going through disrupters will aid separation..Close concave setting and slow rotor to lessen cob breakage.I have run my 60 series as slow as 300 rpm in conditions where soft cobs are a problem to get a good job so you can go slower then that on an 80_88 series and still get adequate shelling..Make sure kernals are not being carried out of the rotor unshelled on cob pieces and then knocked loose by the beater_chopper to appear like rotor loss. when you stop at the end and loose grain this is probably due to grain being recycled through the machine via the tailings return system so you may want to open bottom sieve.An air deflecter in the fan throat will help here.We haven't used any yet but the air jet sieves are getting some pretty good reviews..you will have to pin point where losses are coming from to address the cause.(I am meaning rotor loss or sieve loss) In this neck of the woods the standard rotors are generally thought to be better in corn, mostly because they are more forgiving and easier to adjust or have a wider range that they perform well in, while the specialty rotor is more finicky and harder to get to that sweet spot but will perform well shelling corn.