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Post by rod on Nov 3, 2021 14:14:40 GMT -6
Undoubtably many owners would know this ….. but still interesting to see results. There’s often user/owner complaints about the poor even spread of residue & inclusive, the grain loss is not even across the swath as well. No surprises here! There’s many loss/drop trays that are used when the machine - any machine - is still in the full chop & spread mode. This data is from a S680 in 12mt windrowed canola yielding 3t/ha. I’m presuming other colour machines have their own distribution pattern.  |
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Post by shmiffy on Nov 8, 2021 10:18:30 GMT -6
That’s the main problem with the big single rotors
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Post by iamwill on Nov 8, 2021 20:54:06 GMT -6
I wonder how much loss is beyond the 6m measurement. It's not uncommon to be well beyond the visible spread and still get pinged by seeds. Maybe negligible or too hard to get a consistent weight?
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Post by Oatking on Nov 9, 2021 7:52:33 GMT -6
Undoubtably many owners would know this ….. but still interesting to see results. There’s often user/owner complaints about the poor even spread of residue & inclusive, the grain loss is not even across the swath as well. No surprises here! There’s many loss/drop trays that are used when the machine - any machine - is still in the full chop & spread mode. This data is from a S680 in 12mt windrowed canola yielding 3t/ha. I’m presuming other colour machines have their own distribution pattern. <button disabled="" class="c-attachment-insert--linked o-btn--sm">Attachment Deleted</button> Hey Rod, Lots to talk about here, First of all we have to know what model year of s680 this chart represents because of improvements in cleaning area. Also there is some major fine tuning below the rotor. On the left side of the cross augers you have a deflector bolted to the partition. Its important in high trash or high yielding crops to raise that deflector all the way up so the deflector can do its job and help crop material spread across all cross augers, thus carry it evenly over the sieves. If properly adjusted that curve you showed should even out. There is also a sensor on the back left rotor grate. I was told to cover it partially with grate covers to not give false readings. From there there is a whole host of rotor speed concave height and windspeed that effects the flow of grain and chaff over the sieves. What are you current settings rod for canola? I was really impressed with the low losses from my 2016 s680. I had some threshed canola pods in the the tanks which makes it look worse than it actually is. The dockage was 1.6-2.1 % on 50 bushel an acre canola at 7.8 percent moisture. When I bought my machine the deere dealer provided an optimization clinic to train me on combine operation which I feel really helped. |
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Post by rod on Nov 13, 2021 18:11:49 GMT -6
It’s not my S680. It’s an ‘19 YM I believe. I’m just doing this type of testing to show myself ….. & others, where these losses are. Many people just drop a tray directly behind the machine (any machine) to determine loss amount. They nearly always do this with their chopper/spreader down. The grain isn’t there ….. irrespective of the colour of the machine! It’s way out wider!
I did two Case flagship machines - I’ll put those pics up below - to show the loss distribution pattern. And you’re absolutely right about concave clearance & rotor speed (weather as well) have a massive affect on grain distribution from the concaves onto the grain pan/augers & then onto the cleaning system.
Classic example in the Case results next.
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Post by rod on Nov 13, 2021 18:18:51 GMT -6
  Here’s the loss distribution pattern of Case 8230 & 7240. These machines are basically the same except horsepower. The rotor, concaves, sieves etc. etc. are exactly the same. In this test, 8230 had rotor at 720, fan 700, concave 20mm, precleaner 3mm, top sieve 12mm, bottom 9mm. You can see the weather data for both in the results. 7240 had rotor 620, fan 650, concave 35mm, precleaner 3mm, top sieve 12mm, bottom 9mm. This is an absolute classic display of too slow in the rotor & too wide in the concave for the 7240! Too wide & too slow moves material to the left of the concaves ….. left on the grain pan ….. left on the cleaning system……. & left on the ground! Did nothing else but pulled the concave up to 20mm, sped the rotor up to 720 ……it evened the distribution …… & halved the loss! |
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Post by victory on Nov 13, 2021 23:06:27 GMT -6
Would the counter-rotating concave of the Versatile RT 490/520 solve a lot of this uneveness?
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Post by rod on Nov 14, 2021 12:36:24 GMT -6
Would the counter-rotating concave of the Versatile RT 490/520 solve a lot of this uneveness? Don’t know …… |
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