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Discussion Starter · #1 ·
I was getting along well with the 7010 for the first 80acs we did but this afternoon we switched hybrids and was having trouble throwing corn out the back.
We are totally new to this style of machine and are having trouble setting it.

The default settings for corn in the monitor are...
Rotor 370
Concaves 8.0
Fan 980
Upper sieve 17
Lower sieve 15
Presieve is set just under a 1/2''

Loss monitor sensitivity set at 30 for both rotor and sieves.

I wasn't seeing much loss on the monitor so I think its blowing it out the back. I opened the sieves up to 22 top, and 18 bottom and the tank still looks pretty clean... only larger pieces of cob.
This was right before I quit for the day, what should I be looking at in the morning? With our old 2388 we pretty much ran the fan wide open I take it this moves A LOT more air?
 

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first question do you have ROUND BAR CONCAVES???????? we had problems the first couple of days in 200-240 bu. corn, 20-24%, with a 12 row could hardly run 2.5 mph and keep it in the machine. We did a kill to see what things looked like on the inside. had alot of corn clear back on the rear of sieve also found the mat to be thicker on left side of sieve so we shifted the concave and this helped a little but we also noticed the front 2 sets of concaves were quite covered over with trash. had tailings alarm going off if you tried to go over 2.8mph or so with bottom sieve open to 18 and top at 15 after 1and1/2 days of alot of frustration we decided to get some round bar concaves to replace the large wire and WOW what a difference.

settings now are
rotor 350-370
concave at 9-10
fan at max around 1050
upper at 14
lower at 18
pre set in middle notch

now the corn has dried to 18-20 still running 200and up and we are going 3.5-4 mph. we are having a little problem with some cob in sample or not quite getting it all off but we feel part of this is due to the large amount of rain we recieved in August and in our hand shellings before we started noticed that 25% of the cob near the tip is half rotten and it is hard to shell such a poor quality cob. this does vary by hybred so hopefully it is only in some of the shorter season varieties.

p.s. good luck on finding some round bars if you need them. had to go 150miles west and 160 mi. SE to get a 2 lefts and 2 rights
 

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Discussion Starter · #3 ·
Thanks for the reply!

Yeah we knew ahead of time that the concaves were a problem from our neighbors who have been running 8010's since 03. We put Kuchar grates in the front half of the concaves before we started and they work great. We have absolutely zero hair pinning of trash on the concaves.
My problems are simply not knowing how this thing reacts to changes.

I have my presieve in the 4th notch down from the top... about 1/2'' or a little under I think.

My neighbors and my mechanic have told us to keep the concaves pretty tight, they say these machines like this a lot. Not sure if the non color screen models had a different indicator but my neighbor whos a good friend said they ran their 8010 (with the same grates) at around 2 or even under on the concaves.

Nice machine but its a learning process!
 

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With the sieves that open I would thing your loss is from the rotor. Are your vanes in slow? are any straight and spike bars installed?
 

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keep it tighter plenty of air round bars pre seive in 4 vanes in medium don't get to many round bars in my dealer has some if you can't find them
 

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Round bars in all positions but the front right. Run either a large wire or large skip. Running all roundbar will only work in easy threshing corn. The front right bar/wire module will start the threshing process.

Don't rely on the loss monitors, especially at 30. You need to calibrate them to your loss or else you might as well just ignore the screen entirely. Check your losses on the ground and then set your loss sensetivity on the screen to coincide with the actual loss. I've currently got a 7010 with rotor set on 60 and the shoe on 54 and running low loss. To find out if you have rotor loss leave the spreaders down but open the windrow door. That'll show you where the loss is coming from. You'll most likely find its all rotor loss.

Your vanes need to be moved to the slow position. Any faster and the loss will still be high.

The final thing, and I'm suprised nobody has said this, get a set of straight bars in the separation area. Lose the spikes in favor of the straights. Straight bars are pretty much a requirement for high yielding corn.
 

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I have never tried this but was told once that it may be necessary to move the very front vane to the fast position. Don't know how much I agree with this but might be worth a try.
 

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Quote:Quote from above. "The final thing, and I'm suprised nobody has said this, get a set of straight bars in the separation area. Lose the spikes in favor of the straights. Straight bars are pretty much a requirement for high yielding corn."

Disagree here. This is not a 2388. There is a difference. I could never see much difference in loss with staight bars in over spiked bars. They just take more power. My 2 cents.

I have all vanes in mid position with 3 large wire concaves and 1 round bar in left rear of concave and have very minimal rotor loss in 24%-230 bushel corn.

I do plug feeder house once in a while in green corn. I think it is back feeding. Anyone else have this problem?








I had 2 7010s in the field both with rotor loss around 3%. One with no spikes or straights, the other with 8 spikes. Neither could go over 2mph before loss was too high. No changes other than putting straight bars in the separation area and loss dropped to .5% and ground speed was increased to 4-4.5mph. This is in 180-220bpa corn at 19%. Straight bars aren't only for 2388s.
 

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Discussion Starter · #9 ·
Got some good replys on here!

Its been a challenge for us to set this beast simply because its new. I think the biggest challenge so far is getting the presieve set right, but I think we have that taken care of.

Am I right that if the presieve is open to far it will drop stuff directly into the tailings? We did some beans yesterday and I was overloading the tailings no matter what I did with the bottom sieve. I ran the lower sieve completely open for a little bit and the tailings were still overloading. I could only go about 2mph with my 36' draper head. I closed the presieve all the down to the first notch and I was running 5mph and nothing was coming out the back... it was a hog.

Anyone on here running the small tube rotor in a corn machine? CIH wanted to put it in our machine and some others that will be running corn and soybeans mostly to get some feedback. They said they are about 90% sure this will become the standard rotor by 09' or so.
I can say it works great in beans but we are still working with it to keep all the corn in the machine. Not sure if its the rotor or just us with the new machine.

Today in 18% corn running 210-240bpa i had it set like this:
Rotor 390-400 (no damage at all)
Concaves 6.8 (spitting out whole cobs most of the time)
Fan 980
Top sieve 16
Bottom sieve 15
Presieve set in the 3rd notch down from the top.

Edit: Vanes are in the middle position. Will it help to move them to the forward position?

Clean sample in the tank cruising along at 5-5.5mph with an 8row head running 85-90% engine load.

I was finding about .75-1.25bpa loss behind the combine. A little bit of that is head loss but not much.
How good should I expect this machine to do?
 
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