Hey guy's is there anyway to tell from CNH build sheet if the combine has a small tube or large tube rotor. The machine I'm interested in says Extd. wear rotor w/spikes. Large is 30" and small is 27" so it must be pretty hard to look in a machine and tell the difference?
Yeah the standoffs that the rasp bars bolt to are quite tall on the small tube rotor. It's noticeable especially if you have a normal rotor nearby to compare to.
There's nothing on a build sheet that says anything? The machine is 300 miles away at a John Deere dealership so would like to know before I go look at it.
While we are on the subject, why would you want a small tube rotor vs. tall or visa versa? Everything around here is a large tube so I just don’t know the performance difference between the two.
We love our small tube rotors in heavy irrigated wheat straw. Just to give context, we had a 7010 with a small tube rotor, back when Case was heavily promoting it everywhere. It was a fantastic machine, easily 50% more combine than our 2388 was. Emboldened we upgraded to an 8120 with a standard rotor, expecting another performance bump. We were sorely disappointed. The 8120 had no more capacity than the 7010 but burned 20% more fuel. So now we run class 7 machines with small tube rotors again.
Some claim it's hard to get rotor losses under control, but we don't see any difference in losses or settings. Like SWMan says, it eats kochia nicely.
So if it is a small tube rotor, which I highly doubt, it's nothing to be afraid of. When we bought our last machine, RME brought us one from up north where apparently they are more common with their tough straw.
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