R42 Corn rotor loss

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   HelloI am having troubles with rotor loss running corn with my 1993 R42 with a 438 corn head. Corn is 18% around 210 bu per acre. Can anyone give me a good starting point for setting. I currently have rotor speed 250 and the concave set for 6. I am only seeing rotor loss. How would you recommend for setup and speed. Thanks for any assistance. This is my 2nd year with this combine and had some issues with rotor loss last year as well. I  came from a F3.
Thanks again

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lbr Members Profile Send Private Message Find Members Posts Add to Buddy List Bronze Level Joined: 14 Oct 2009 Location: Indiana Points: 46	Post Options Post Reply Quote lbr Report Post Thanks(0) Quote Reply Topic: R42 Corn rotor loss Posted: 8 hours 36 minutes ago at 5:47am
	Hello I am having troubles with rotor loss running corn with my 1993 R42 with a 438 corn head. Corn is 18% around 210 bu per acre. Can anyone give me a good starting point for setting. I currently have rotor speed 250 and the concave set for 6. I am only seeing rotor loss. How would you recommend for setup and speed. Thanks for any assistance. This is my 2nd year with this combine and had some issues with rotor loss last year as well. I came from a F3. Thanks again

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DrAllis Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Access Joined: 12 Sep 2009 Points: 20165	Post Options Post Reply Quote DrAllis Report Post Thanks(0) Quote Reply Posted: 8 hours 19 minutes ago at 6:04am
	Concave at 12 for corn. Remove every other wire from rear half of the concave and remove every other wire from the separator grate on the left side.

tbran Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 14 Sep 2009 Location: Paris Tn Points: 3273	Post Options Post Reply Quote tbran Report Post Thanks(0) Quote Reply Posted: 14 minutes ago at 2:09pm
	Ditto what Doc said - ALSO MEASURE THE LOSS - Drop the spreader and count the kernels per running foot under the discharge chute at harvest speed. If memory serves correct it takes 18 kernels per running foot under the 18" discharge chute to make 1 bu / a loss. IF you are in 150 bu corn and have 1 bu or less loss - you are an expert harvester. Most combine losses exceed 1% - by a lot.... if one tries to get to 0 loss,,, the cost to do that in extra fuel and time exceeds the loss cost. 1 BU / a loss is less than $4 today Grrrrrrrrr... Also harvest speed can affect loss. Too slow or too fast in different varieties makes a difference. We have seen some varieties that will have double the loss of a different variety at the same moisture/speed of harvest. Some varieties have shucks that 'roll' themselves into a giant stogie an roll up kernels inside - we use a cylinder bar or rasp concave bar bolted in the bottom to shred the shuck.
	When told "it's not the money,it's the principle", remember, it's always the money..