leave the first helical on the right as is, but shorten it on the back side so as to install a steep pitch helical in the origional n1 rh position. This will allow the first helical to line up with the helical extention you will put in or is already in. (the triangle piece and short helical installed in the upper lh corner of the infeed area.) Then remove the other non steep pitch helicals on the thresher and add steep pitch ones. Three long and one short will get the job done. Where the steep helicals meet the regular ones is where the cuts will need to be made to allow them to transition. It is just like the old P1 N series with the line up kit. the post below refers to cob break up. That is a possibility. We have found this to be variety related. Some varieties have great yield, but low cob strength. We have run steep pitch in white corn with CDF rotors and got premium, which is hard to do.( have a head to head STS story to tell later) The increase in capacity is mainly in green stem soybeans. We think 10 to 20 % because of reduced 'second pass threshing' which results because the material is moved to the left much quicker. We still run cyl clearace at compressed cob diameter, move the separator grate up 1 to two marks ( this is where we find the cob break up to be with the CDF rotor) to origional clearence of regular rotor. This is the same set up we are using with the Bison rotor one of our customers is using beside the CDF. He likes both. The Bison has much more capacity in green stem beans and wheat. The customer thoght we might have some issues in corn, but we think we have this worked out successfully. The solutuion may have dividends for other rotors as well. More on this later. Dan is working on evaluations.
