Setting the Caseih

[furrowtickler]

Yup , everything goes in . You need to take a little time and having the right hand screens makes it much faster .
But there is no more guessing .
Fairly quick and you know what's going on for sure.
Once you adjust your loss monitors to what is actually going on it makes adjustments easier . Found out that I could not run that combine much more than 60-65% to keep losses below 1 bus .
But this was a new combine to us so maybe next year we can do some more tweaking.
As we all know each canola variety and conditions can vary widely .
Like any combine , still had to tweak a little every day .
I am sure other pans or drop box's work well too but this seemed to be very accurate and the measuring gauge and chart made it fairly quick.
You can't trust grain loss monitors until you know what they are actually telling you. When we started the first canola it was too dry but the pods were not cured and kinda rubbery. We used the settings from the dealership and thought the loss was low according to the monitors. We checked behind on the ground and our 1 ft drop box . It seemed fine but when we used the Scher Grain drop pan it was 4 bus 😳. Had to make some very different changes and wait three days to start but got it down to below 1 bus then adjusted sensitivity on monitors according to actual loss .
I was shocked how little seed we found at that 4 bus loss. But when we slowed the chopper and dropped it all it was there .
After we used it the $1800 was cheap we thought .
This pan would show double or more the loss compared to what the standard checks would show .

[biglentil]

When you move the spreader out of the way and drop it completely changes the wind characteristics over the shoe. Plus its a pain to deal with the dropped trash after the fact as it doesn't always pickup. Not saying its wrong but not a true story either.

[furrowtickler]

With the Case spinners at 400 rpm I doubt it changes much , but you could be right especially if there is a Mav or similar high speed chopper / spreader for sure.
One thing we did see with the chopper at 750 rpm and the spreaders up was the unthrashed pods that were going through the rotor . With the chopper at 3000 and spreaders working those pods were not there because the chopper finished what was not being thrashed in the rotor.
Tightened the concave and sped the rotor and they were still going through . So we waited 3 days .
End of the day the rotor and concave need to do the thrashing , not the chopper.
It was an easy way to see what's actually going on. Was no use even combining canola that was not ready let alone testing for losses .

[biglentil]

With the Case spinners at 400 rpm I doubt it changes much , but you could be right especially if there is a Mav or similar high speed chopper / spreader for sure.
One thing we did see with the chopper at 750 rpm and the spreaders up was the unthrashed pods that were going through the rotor . With the chopper at 3000 and spreaders working those pods were not there because the chopper finished what was not being thrashed in the rotor.
Tightened the concave and sped the rotor and they were still going through . So we waited 3 days .
End of the day the rotor and concave need to do the thrashing , not the chopper.
It was an easy way to see what's actually going on. Was no use even combining canola that was not ready let alone testing for losses .

Strange enough I heard a case tech say that on a Case the spinners actually choke the airflow when they are in place. But also heard when they are up over 500rpm they can suck small seeds off the chaffer. So how do you compensate?

Yes rotor loss is a tricky one to diagnose as the rotor loss monitors do not work well in small seeds. Rumour has it Case is going to two rotors to increase threshing area. Running at 70% engine load sure seems like a waste of capacity but what can you do when the rotor and cleaning area isnt sufficient?

[biglentil]

In the Case combine, under the front side of the chopper there are open slots. I put the blocker plate in to reduce the mog load and adverse wind it throws backwards up the chaffer as recommended. I think Case put the openings there to compensate for rotor loss. The whole CNH design is a bit strange imo, im amazed it works at all.

[Guest]

Good idea , do you use one or two ?

[Hamloc]

Absolutely, they are all made to work . But conditions can callange any combine .
The Scher Grain drop pan and measuring gauge with the chart sure made it nice to check and make sure my monitor was accurate.
Ya we overchecked at times but again this Case is all new to us so it's always a leaning curve .
Even experienced guys had to change their thinking a bit this year so far.

Furrow, like you in 2017, this is my first year with a new to me Case ih 8230. So far very happy with the combine.

A few questions on canola. We grow all pod shatter resistant canola which certainly is different to thrash.

This is how it is set up. We have Sunnybrook concaves with hard thresh in the first module, second module would be a minimum thresh set up, not sure what they call it, bought the concaves barely used second hand. The pan under the chopper is plated and I have installed the runbber seal in the sieves that is standard on the 50 series. Large tube rotor with new rub bars this year. Also programmed to 530 hp.

My settings vary but rotor at 24 clearance, 730 rpm, presieve at 1, chaffer 13, bottom sieve 6-8, fan at 610-620, spinner 500-540. Have a 25 foot swath speed varies 3.5 to 4.5. Engine load averages between 55 and 65%. Main concern is pods in the sample and at times throwing out a bit more than I would like. I am thinking I should replace a few hard thresh boxes in the left front module with min thresh boxes to reduce trash. I haven’t changed the block position on the sieves yet to reduce the shake, I had done this on my previous New Holland combines. Just wondered if you still ran Case and what you have learned?

[BreadWinner]

We have gained a bit of knowledge since I posted this thread. We found that the majority of straight cut canola is going out the back as rotor loss. We use these settings now, 850 rotor, tighten up the concaves like 4, fan 720, pre sieve closed, top 10mm bottom 9mm. Spreader at 550. The concave arrangement is very important, you need a wide wire in the first spot then a hard thresh in the 2nd on each side. That arrangement will let the canola out of the cage early and and pods left should get smashed up in the 2 spot. Hopefully this works better for you.

[Hamloc]

Unthreshed pods is a little weird. I never see em. Open the white plastic access door, reach in behind the flange and feel if your cone is worn through.

We were doing canola other day 40ft straight, had my rotor at 830, 25mm concave clearance, small wire concaves in all 4, bottom seive 16, top fixed airfoil chaffer, preseive 2, fan 850. Spinners 700.

I would try more rotor speed, tighten concave a bit, open bottom seive up to 14mm, top same. You won't be able to run same wind without an airfoil chaffer, but should be around 760rpm. With bottom seive closed to 6 or 8 your not allowing the wind to do the work. I know there is a tight top and bottom seive school of thought too, but was never a fan. Can get terrible losses the seeds walk right on top of the chaff, and it won't show on your screen.

Sorry I wrote that wrong, I didn’t mean unthrashed pods, was simply referring to trash in the sample. It is possible I worry too much about trash. Much harder to keep trash out of the sample with pod shatter canola.

[Hamloc]

Unthreshed pods is a little weird. I never see em. Open the white plastic access door, reach in behind the flange and feel if your cone is worn through.

We were doing canola other day 40ft straight, had my rotor at 830, 25mm concave clearance, small wire concaves in all 4, bottom seive 16, top fixed airfoil chaffer, preseive 2, fan 850. Spinners 700.

I would try more rotor speed, tighten concave a bit, open bottom seive up to 14mm, top same. You won't be able to run same wind without an airfoil chaffer, but should be around 760rpm. With bottom seive closed to 6 or 8 you are not allowing the wind to do the cleaning work. I know there is a tight top and bottom seive school of thought too, but was never a fan. Can get terrible losses the seeds walk right out on top of the chaff, and it won't show on your screen.

I tried opening bottom and top sieve and playing with the fan, losses went up as did trash in the sample. Any fan setting higher than 620 seems to increase losses. Not disagreeing with advice or being argumentative, just trying to learn. Small wire concaves in all 4, very interesting and never heard that one before. I can see that helping reduce trash on the sieve.

[Hamloc]

We have gained a bit of knowledge since I posted this thread. We found that the majority of straight cut canola is going out the back as rotor loss. We use these settings now, 850 rotor, tighten up the concaves like 4, fan 720, pre sieve closed, top 10mm bottom 9mm. Spreader at 550. The concave arrangement is very important, you need a wide wire in the first spot then a hard thresh in the 2nd on each side. That arrangement will let the canola out of the cage early and and pods left should get smashed up in the 2 spot. Hopefully this works better for you.

I have a set of slotted mad concaves for peas that I was thinking of putting in the first position. Never would have thought of hard thresh in the second.

[biglentil]

Sorry I wrote that wrong, I didn’t mean unthrashed pods, was simply referring to trash in the sample. It is possible I worry too much about trash. Much harder to keep trash out of the sample with pod shatter canola.

Had that issue with one machine other day massive trash in the sample, mine was fine. Only difference preseive in that one was 3 instead of 2 in mine. I opened it wide open a couple times to get the sticks out. Moved it to two, cranked the fan up to 1050 while sitting stationary, to make sure fan plenum was clear. Put wind back down to 830 and sample was a 100 times better. Hope this helps.

[BreadWinner]

You can’t have the presieve open wider than the size of the seed you are combining.

[biglentil]

You can’t have the presieve open wider than the size of the seed you are combining.

I hear ya, I like to have it as open as I can as long as fan doesn't plug. Increases overall cleaning capacity. Those running sub 700 fan may require it closed completely in canola. Properly setting a combine is more art than one size fits all hard fast rules.

[blackpowder]

Am told pre sieve only designed to take the first %10 of grain.
We did some kill stalls in wheat this year to check even loading of shoe. Very important. Rotor concave setup affect that.
Conditions varied through the day but loss always followed engine load. 80% was the magic number even in the 9240.
Am told to start at the front of the machine when making adjustments. Makes sense. Kill stall enlightening.
Different varieties of pod shatter vary a lot I'm told. Invigor more like a wht/bly setting.
Choking bottom sieve chokes airflow.
Tightening concaves usually augers it out faster.