Combines rotor knives

[alan]

Thanks JonND, I appreciate your information. I will be pulling the combine in the shop in the next month to get it ready for summer harvest. I am just wanting to know what is going to be the best way to set this machine, and with your help and others I am getting a better understanding of where I need to be, and how to set it up. I was going to ask you if your airfoil is adjustableIJ looking at getting one that is a non-adjustable and I don't know how it is going to work. Thanks for the help. Talk to you later.

 

[J]

The airfoil chaffers I have had have been the non adjustable type. Just be sure your cleaning fan is running up to rpm's it is maxed out at because the non adjustable chaffer requires a lot of air movement.....

 

[Harvester]

In corn, we can run without any rotor knives in. In wheat, barley, and other small grains, however, we've run with as few as 7 installed and it does a great job. Doesn't chew up the straw as badly so one could bale behind it, and doesn't overload the shoe with fine chaff. Good luck.

 

[swtvid]

I was waiting to see comment from folks that raise beans, some time comment come slow to this site, but I appreciate it when it comes. Usually good I think. I only cut wheat barley and safflower, I went down to 6 knives this year to not brake up the mog as bad and have better straw, and I think it help. The knives had been mod. by the previous owner with 3_8 metal welded to the side of the knives to make it taller by about 11_2". Happy holidays Dee

 

[farmer_at_heart]

Don't mess with them unless your having problem's.It's not worth the hassel of unbalancing the rotor and creating trouble.If it's working good already don't fix it.Just my opinion.

 

[Harvester]

With an 8780XP, leave all the knives in just as they are for corn_beans. But keep in mind that if you have trouble busting up cobs in corn, you can take them out to solve it. Usually start at the front of the rotor as the first 4 rows are the easiest to remove and reinstall if necessary. For small grains growers, removing the knives reduces the load of trash on the shoe by not breaking up the straw. For soybeans the knives are a big help, especially early in the season when the stems are still green. The MF rotary is the best tough soybean combine I've seen.