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Discussion Forum

Re: 6620 6 row narrow head in 193 bpa corn... several quest

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John_PA

11-13-2012 01:08:35
71.182.164.251



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Jd Seller,

I am going to call John Deere first thing in the morning and request, not I take that back... I am going to call and DEMAND they include your set up instructions in the next reprint of the manual.
That manual is so vague compared to what you just said. Yes, I completely am new to this combine, so there is a huge learning curve, but, everythin you said makes so much sense. I would be a fool not to do as you say. I will. I got my part and I got it installed.
I started on your instructions before teh rain hit and I was doing 203 bpa on the same field where I was doing 193. that's a huge gain!
AS I go up the hill into the limestone clay, I know the yields are better. when they assesed for teh pipeline, they pegged it at 243 bushels. I think I have that much, but haven't gottne there yet. my bottom land spot checked at 303 bushels. Even if I can hit 250, I'm going to be happy.
I can't thank you enough. when this rain dries off, I will continue on yoru path of awesomeness and I will let you know where I stand. So far, all my assumptions were right, with exceptiong to the sieve. I had to get someone else to pull the lever for me because my forearm would not fit in that tiny gap. I guess I should cut down on teh protien so my arm fits.
There are a set of 5, I think, augers that run from the cylinder back. those augers are worn I assume. they must be grinding up the corn. They look like a total pain in the knee to change out. that is where I am grinding corn.
My tailings is nothing but a few tips and a few whole kernels mixed with a bunch of cracked and ground corn. I bet I'm wasting 10 bushels per acre in cracked corn. I'll have to cope with that for teh year, and tear it down in the winter.
I increased cylinder speed to 400 and opened teh concave by 1/8". that was enough to make the machine give a cleaner sample and reduce some of teh cracked corn. I still need to run it more in my higher yeild stuff. When I move to the next farm will be teh real test. according to the test 17.5 feet samples, that farm is making 265 bushels. that will be the real test.
I can't thank you enough. with such a great year, I just hope I can get this thing tuned in good enough to reap all that I sowed.

To all others who replied, thank you so much. this will be the year I can afford to boost the lime and organic content on my home farm up to a level that is tolerable. running down 100 bushel corn just is not fun. It made me sick. I am going to use the money to better it all. I have lime and horse manure, and 2 season old round bales to shred all winter. I am going to try to up that place to a level that will compete.
I'll let you know exactly what I end up with. I just hope it will be as good as teh survey!

thank you.
thank you.
thank you!

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JD Seller

11-13-2012 05:42:25
208.126.196.144



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 Re: 6620 6 row narrow head in 193 bpa corn... several quest in reply to John_PA, 11-13-2012 01:08:35  
John the shoe augers WILL not grind corn. They fit real loose in the shoe auger trough. They just do what the raddle chain did in your Gleaner. They just move the corn from under the concave. No way for them to grind corn. You are seeing ground corn there from under the concave.

The shoe augers are turning??? I have seen the slip clutch jaws break and the augers not turn then you will grind the heck out of the corn because the cylinder has to throw all of the corn out the top back. Check that out. It is a long shot but I have seen it happen.


I am willing to bet that the cylinder/concave clearance is still set too close. You need to really look at the cobs and see what they look like on top of the straw walkers. Also if the corn is real dry you may need to open up the concave and really push the combine faster to keep it real full. Corn rubbing on corn will shell without damage in a soft kerneled corn. I mean really push the machine. The JD 9000s are real bad about this. Most guys slow down when they see cracking shelling problems. This sometimes is the wrong thing to do. So try opening it up until you have good whole cobs. Even leaving a few kernels on the cob until you really fill up the cylinder. The push it and see if the damage goes down.

I have seen some varieties of corn that shell harder and they will have damaged kernels at the cylinder no matter what you do. Even some times a rotor machine will do it too in those varieties.

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Mike Aylward

11-13-2012 06:33:46
216.145.134.145



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 Re: 6620 6 row narrow head in 193 bpa corn... several quest in reply to JD Seller, 11-13-2012 05:42:25  
The 9000 series combines are not bad about grinding corn. Not if they are set right. I own a 9500 and can make corn look like it came out of a hand corn sheller. Mike



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JD Seller

11-13-2012 17:30:05
208.126.196.144



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 Re: 6620 6 row narrow head in 193 bpa corn... several quest in reply to Mike Aylward, 11-13-2012 06:33:46  
I did not say they ground corn. I said they needed to be crowded to be kept full to shell some corn. I have seen varieties that where they would leave corn on the cob but you could not set the concave any tighter or they would split the cob. Solution was to go faster and crowd the corn through the concave.

A JD 9000 series is a lot harder to get used to setting than the 20 and 00 series combines. You have to do it step at a time or you will never get them set right.

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Mike Aylward

11-14-2012 06:56:32
216.145.134.145



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 Re: 6620 6 row narrow head in 193 bpa corn... several quest in reply to JD Seller, 11-13-2012 17:30:05  
The "problems" with the 9000 combines is the book. The suggested settings are abysmal. This year I shelled some drought corn making 40 bushels and the combine did a good job without any cracking. You simply can't set these combines by the book. Actually, no combine can be. It is only a starting point, not gospel. If you know how a combine works you will set it by conditions, not by the "suggested settings". Mike

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