Several years ago when I traded for some 1688 machines the salesman told me if I want to make real corn machines out of them I should pull every other wire out of all three concaves. That's what I did and that is what I've been doing ever since even before I ever take the machines to the corn field. I even leave them out for soybeans. Some of my customers are awfully particular but they never complain on the job I do for them. I've always felt that if you are going to throw a crop out of the back of an axle flow it is going to come off the rotor. There is so much capacity in the shoe that it very seldom goes over the shoe if you have the air and sieves set correctly. There fore it is important to get the crop away from the rotor as soon as it is threshed. If your bars and concaves are up to par there should be no reason to ever use cover plates especially in corn.
Now for beans, I guess some parts of the country they raise tougher threshing beans than we do here in Kansas. Even with the green stem irrigated beans I've never had a problem getting them out of the pods or getting pods in the sample even with every other wire pulled on all concaves. But I wish some one would tell me how to get the green stem beans through the AFX rotor. I can put a perfect sample in the bin and nothing on the ground but gosh it takes power.
Now for beans, I guess some parts of the country they raise tougher threshing beans than we do here in Kansas. Even with the green stem irrigated beans I've never had a problem getting them out of the pods or getting pods in the sample even with every other wire pulled on all concaves. But I wish some one would tell me how to get the green stem beans through the AFX rotor. I can put a perfect sample in the bin and nothing on the ground but gosh it takes power.