John_W
Guest
How about a set of Helical Concaves that I see over in "Attachments". They claim that they will do what you are asking. That would be cheaper than a different rotor for tough threshing wheat.
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Combines Rotor for most aggressive threshingIJ
Farm_Kid2
Guest
That's a good thought. When those concaves came out I thought they would be just what we needed, but since then I have not heard anyone report on how well they work. I've talked to people who were pretty skeptical about them, so I guess I kind of discounted how well they could work. Maybe I can get some user feedback on hereIJ Thanks for the suggestion, Mike
turbored
Guest
Mike, I used a set (3) of helical concaves last harvest in corn and beans and the capacity along with the air jet chaffer is truly remarkable.
JWK
Guest
Turbored, Would you use cover plates on the helical convcaves alsoIJ Thank you for your input. JWK in Minnesota
turbored
Guest
JWK, In soybeans we did use 3 cover plates. My concaves were the ausse make but it is my understanding that Marvin is going to manufacture some also.
Farm_Kid2
Guest
turbored, What rotor were you runningIJ Could you really run lower rotor speeds and wider concave settings to get the same level of threshingIJ Thanks, Mike
turbored
Guest
Mike, I was running a specialty rotor with Gordon bars over the concaves. In corn we would run the rotor down until you could see the pinch marks from the bars on the cobs and then adjust rotor speed. In soybeans,running the rotor too far open actually seemed to take more power than running it tight due to the mat of material that would build up on the concaves where they had the cover plates on them. Horsepower is actually my limiting factor now and am thinking about turning my machine up (92 1660). 200bu corn @ 5mph starts to bog this machine down. Is it hard to turn up the cummins motor and if not how far do you go. The pump has already been to Michael @DES in Salina, Kansas and that was a major improvement. Thanks in advance for everyones comments with regard to turning my pump up! Terry