Combines Rotor loss In Wheat

[FarmBuddy]

After reading through the various comments, I was just wondering if you have the small grain rotor grates with the slots running axial front to rear, or if this machine has the "R series" small grain grates, round bar grates with the ripple humps on each rodIJ If these are still the slotted small grain grates, have the slot leading edges wore a lead in ramp onto each oneIJ If so, more grain will keep riding up onto the next one, and not fall through to the pan and shoe. If this is the case, switch the grates from left to right side, which will create a lead in "curb" instead of a "ramp" edge, since the rotor rotate in opposite directions. The abrupt "curb" will separate more grain out, whereas a worn grate will "ramp" up grain and let it "rifle" on out the back.

 

[tobaboy]

Harvest is done, but when I get a chance I'll have a look. That is an interesting idea, have you seen that happen before on these machinesIJ Also curious as to whether you've run a 590r and if so how much more capacity would you say it has compared to a 480r. Is machinery link operating any 590sIJ

 

[FarmBuddy]

Yes, I have seen that wear pattern of "lead in ramp" create a "rifling grain loss" problem in the past. This seems to be a natural phenomenon on most stationary concaves and_or grates. Switching the early version lexion small grain separation grates between left to right was an effective solution on the 470s and 480s. Another effective alternative is to install a long "disrupter strip" along the bottom of the worn grates. These can be made out of approximately 1_4" high x 1" wide by 6 ft long channel or strip steel. This has worked as an effective and quick method of stopping the "rifling" effect. The 480Rs after 2002 have the improved round bar, rumble bar grates, which seemed more effective than the simple slotted grates, especially as they wear a .10" lead in ramp. It seems that the JD STS round bar concave also wears into a "3_4 moon" shape over time, resulting in less disruption and separation, and therefore more rifling loss. Short term solution is to replace the worn grates, which JD loves making money on. In my opinion, the Bi-Rotor configuration worked better and makes physical sense by rotating the concave grate in the same direction of mat _MOG flow. This reduces the lead in "ramp" wear, reduced grain damage, increased Fc (Centrifugal force) while providing a full circle _ 360 degrees of separation. It sure seems like these advantages would out weigh the reduction in worn out concave sales, Doesn't itIJ

 

[FarmBuddy]

In most applications, the biggest boost in capacity of the 590R v. 480R comes with the larger clean grain elevator at 5000+ bph capacity and the graintank with hydraulic fold hyper extensions. These grain handling improvements make it possible to step up to 16 row cornheads and 40ft Maxflex head. Theoretically, this represent a 25% increase in capacity for the 590R, but realistically the increase in capacity varies between 15% to 40% more capacity depending on crop, conditions and what the actual limiting factor was on the 480R. (eg. Knife speed or lateral contour for beans, or clean grain elevator for corn). A lack of HP is not usually a problem for a lexion 480R or 590R, unless very soft ground or significant hills. Seems like a 590R or 595R makes economical sense in the corn _ soybean belt for large 4000+ acre farm operations. Tougher to justify in the wheatbelt, so Machinerylink did not offer 590R, but Dave G did mention at TFCW that Ml has been getting this request and are considering adding a few 590Rs to the Ml fleet. Perhaps the 595s will be added as the tracks might eliminate the overwidth transport problems and alleviate RandR of cumbersome duals. TMI and off the subject, but widespread rain is falling in the Ohio valley today, no havesting going on here in southern Indiana. SI replaced the AH171010 arm rest circuit board in JD9650STS to stop the derate occurances.