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Camrose, Alberta | Use the filler plates for sure, to thresh out all of the white caps (seeds still attached to the stem/chaff, which is dockage at the elevator). Different kinds of wheat thrash tougher or more easily, our hard red spring wheat (especially if its bearded and not dry) can be though to trash at times.
One mistake a lot of guys make with their first rotary combine is they close down their concave too much (ie. under 10) to try to get rid of the whitecaps, because that how you did it with a conventional combine. With the concave tight the wheat hits the rotor and gets accelerated around and out too quickly. The wheat should be moving past the rotor slower so the rotor can hit it many more times. We run three filler plates, two at the front (positions 1 &2) and the third plate at position 4 or 5 (I can't remember for sure) where the return elevator drops the grain back into the rotor. With the filler plates in if we are still getting whitecaps then we close down the bottom seive so the white caps go back up the return.
Also run the rotor as fast as possible (950-1000 RPM) without cracking the wheat, but keep in mind cracks can come from running too musch grain back through the return.
Our JD dealer every year puts on a combine clinic before fall for any guys who are new to rotary combines. The past few years they have brought in a JD combine tech to advise guys with getting the best capacity out of their machines. If this is available in your area I would definetly go, because you can learn 5 years of experience in one afternoon. | |
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Setting a JD rotor for wheat?????
