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Discussion Starter #1
1680, standard rotor, no chopper, 25' 1020 head. For the last few years I have always battled with chaff disbribution heavier on the right side (looking from the rear) I know that rotor speed has a play with it and the slower I run the rotor the more even spread I get but at times I need to run at 700 or more and thats when it really starts to throw a majority to the right side. I have checked the pinch point and it is dead on.

It looks like I"m running a 50' header Local mechanic is stumped to .
 

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Do you have the little "paddles" on your belly augers? If not, get some, as they help to move the grain and chaff more evenly across the screens.
 

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Discussion Starter #3
I forgot to mention that this comes from the spreaders, not the chaffer, but yes, I do have the paddles on the augers.
 

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If you are talking about uneven straw, my 1688 had the splitter for the straw and I had to take it out and make a angle iron to vector the straw more evenly to the left. I'm not sure if a 1680 would have the same set up, but after the little mod, not only did it spread more evenly it spread a little farther too. If you've ever looked at a 2188 or newer they have an adjustable vane, that's what I used for inspiration. If you need more info I will keep an eye on this thread. Hope this helps.
 

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Discussion Starter #6
I've never climbed under a 2188 but thought someone mentioned that they have that vain. I looked on CIH website and couldn't find anything. I've thought about doing that but wasn't sure where to mount it, I'll go take a look at one tmrow if I get a chance and see if I can't order one to see if that helps.


ps I'm dealing with soybean chaff.
 

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we suffered the same here in the UK. I have a 2188 with 20ft european header, and chopped straw and chaff would spread too far on the right landing on uncropped edge. to get over this we hang a length of fence netting, on the right side of the safety rail that protects the rear of machine. The Netting has squares of 5-6" and acts as a baffle. Hope this is of help
 

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I'm fairly sure (at least I think I remember hitting my head on it) that the 2XXX machines have an adjustable deflector/vein in the back where the straw hits coming off the chopper.
 

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What I did when I put my homemade vane in our 1688 is after running without the factory splitter deflector thingy, it had a shiny spot where half the straw hits in that one 12 inch spot and I put it right in the middle of it and then experimented til it worked. I have since put the straw/chaff spreader kit on that Case IH now offers, so it is just like the latest and greatest new combines. That was a good investment for me as we are running 30ft of windrowed drybeans through it. No more heavy pods right behind the combine.
 

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Also you don't have to order a deflector. Just use about 16-18 inches of 2 inch angle iron and drill a hole in the middle, then weld a 5/16" bolt to it and you can adjust it just by loosening the nut. If I remember right I used an existing hole in the back pan.
 
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