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Combines & Harvesters Discussion Forum

Re: F2 over-threshing the corn a bit

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Bob Bancroft

10-23-2012 09:58:33
97.73.64.143



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Yes the 20" pulley is the one for corn. As I remember I tried corn once without the filler bars, and thereafter always put them in. Dad used to put "half-round" concaves in his E to do less grinding. I'm surprised you can go as fast a you are in corn that heavy. The limiting factor for my F2 was the clean grain elevator. Once we started exceeding 140 bu. corn I was running in first gear. But then here in the cold wet northeast, corn usually isn't that dry. I put a full complement of rasp bar concaves in my F2 and left them in year around. I don't know what that would do for you. Maybe you need rubber concaves!

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Kell

10-23-2012 10:17:57
192.46.108.229



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 Re: F2 over-threshing the corn a bit in reply to Bob Bancroft, 10-23-2012 09:58:33  
Hi Bob, to be honest, I'm a little surprised myself that I can move the variable forward in 2nd as much as I have and still not hear the clean grain clutch slipping, but it hasn't yet. I have been waiting for it as I move that lever forward!

What problem did you solve with the filler bars? Was it over-threshing or incomplete shelling?

Funny you should mention the rubber concaves! I was just thinking about that this morning. As mentioned previously, I have a set of angle concave bars, which I think may be what is considered "half rounds". I was going to try replacing the channel concaves with those as a next step and see what happens.

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JDseller

10-24-2012 22:46:05
208.126.196.144



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 Re: F2 over-threshing the corn a bit in reply to Kell, 10-23-2012 10:17:57  
The filler plates make the corn only go through the cylinder once. They can not come back around by falling into the center of the cylinder. I would try to get set of filler plates. Most guys around here left them in all of the time. It may cut back on your capacity in wheat/oats but usually you are not at full capacity in those crops anyway.

You can try the half rounds in the door. The half channels may help but they still have sharp edges and may still damage the corn.

Also do you have the cornhead book for your machine??? Reason I am asking is that some of this is covered in it not the combine book. Gleaner was kind of unusual in that the header books also contained much of the information needed on the combine for using the header.

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Bob Bancroft

10-23-2012 10:25:45
97.73.64.143



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 Re: F2 over-threshing the corn a bit in reply to Kell, 10-23-2012 10:17:57  
I can't remember, but I think it was both. Seems like to get complete shelling without too much grinding, I put the filler bars back in, Just like JDSeller says. I only took them out because you're supposed to when you speed up the cyl. for small grain. Although I had a neighbor with an early F who just left his filler bars in year around. Half rounds are literally just that- half round. Threaded to take a 3/8" capscrew. I think you're talking about half- channels? Just a standard concave with one edge cut off.

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Kell

10-23-2012 10:33:00
192.46.108.229



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 Re: F2 over-threshing the corn a bit in reply to Bob Bancroft, 10-23-2012 10:25:45  
Yes, the other concave bars I have are half channels.



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