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Discussion Starter · #1 ·
Had a little trouble with my 8120 yesterday evening. Good thing we already had a 9230 demo in the field already at this time. I have my 8120 chipped. Honestly there wasn't much of a capacity increase over my unit, maybe .2 mph. We were doing heavy oat crop (140 bpa) that was lodged and fairly green straw, seeds very dry though. Also used more fuel, .3 gals per acre more than our current machine, plus def. Both these machines had large tube rotor. Next morning dealer sold that 9230 and brought us a 9120 until ours was fixed. It had a small tube rotor. Way more capacity suddenly, when we brought ours back home and used both for the rest of yesterday it was a significant improvement in capacity. I was unaware of that made so much difference. Turned my chip off and it was close to 1 mph different. Dealer is making us a very good offer on this like new 9120, so we might keep it. 2010 with 320 hrs only :D
 

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Ive noticed on 13 lit Iveco on New Holland that the first 200 hrs they burn a lot of fuel and short of power. As soon as that hour meter hits 200 fuel burn drops by about 3 to 4 gallons per hour runs smother and way more capacity. Seems like they have it programed into the computer to over fuel for breakin
 

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In our experience, a small tube rotor, if it works for you, can make a combine have as much capacity as the next class. We went from a 7010 with small tube rotor (amazing capacity vs our old 2388) to an 8120 with a normal rotor. All it did was burn more fuel. Absolutely zero increase in capacity. Now we run with two class 7s with small tube rotors and are very happy. Especially this year when our straw seems tough everywhere.

You could probably get a small tube rotor for your 8120 and it would probably have more capacity also.

Small tube rotors can be hard to get set right in some circumstances. Losses might not be quite as low as the regular rotor in some conditions.
 

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Discussion Starter · #4 ·
I heard about the problem of setting. We are using both right now in canola, .3mph faster,, .5 gal more fuel per hour, and slightly les loses with 9120. This afternoon in oats it was up to .5 mph faster.
 

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We demoed a 8120 with a small tube rotor a few years ago and it was a big dissapointment for capacity and grain loss in a 70 bushel per acre durum crop.
 

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Have a 9230/small tube with 35' head in wheat burning 0.9 and using one tank of def to three tanks of fuel. Finding it hard to control sieve loss.
 

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Your 8120 chipped should almost be the same hp as the 9230 should it not... Chip the 92 and it might be a different result
 

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Hint hint.... Take back plate off steinbauer, turn adjustment knob screw to 5.30 from the 12 o'clock position... Gives injectors the widest duration of the tune and you get the max, usually 30 percent more, give intake filter a good cleaning because it will be using that much more air... And hang the **** on, different combine all together....close to 700 ponys
 

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Have a 9230/small tube with 35' head in wheat burning 0.9 and using one tank of def to three tanks of fuel. Finding it hard to control sieve loss.
Do you think the sieve losses are due to the small tube rotor?

That's pretty good fuel consumption! Our irrigated wheat rarely goes below 1.5 gal/ac on any machine we've tried.
 

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The small tube rotor is what case needs to sell more of... Just with real threshing elements on it.
Many people have loss issues because of lack of threshing... Put a decent threshing element with the freeing up of space from the smaller tube and you have a real winner...

But they dont
 
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