[trex]

I was watching a Mike Mitchel Youtube of combine critiques. Was showing the Deere chopper knives that had wings to create a suction. Got me wondering why they do that.

The larger question I am wondering, does the suction that the chopper makes keep the dust flowing through the whole combine? Is that a reason that Deere's don't have near the feeder house dust that a Lexion does? That was one of the biggest drawbacks going from Deere to Lexion. Wondering if anyone experimented with that?

 

[meskie]

It’s a rotor vs conventional that the dust is worse on the claas. When we ran NH twin rotors there was next to no dust out the front of the machine.

 

[Don Boles]

The larger question I am wondering, does the suction that the chopper makes keep the dust flowing through the whole combine?

Zero (0) effect.
Chopper so far removed from the dust generating APS/cylinder/impeller until air drawing rotors, no way to have any effect from the chopper.

 

[trex]

Does the new dust collection system on the 8000's work any better than the old style? And, when running the new higher speed on the rotors, does it have any effect on drawing dust through? It always seemed to me that the rotors would draw more air through

 

[Don Boles]

Does the new dust collection system on the 8000's work any better than the old style? And, when running the new higher speed on the rotors, does it have any effect on drawing dust through? It always seemed to me that the rotors would draw more air through

Yes, the new full width feeder house suction is more effective.
But there is still some as compared any direct feeder chain to rotor unit.
Even New Holland adding the DPS in front of the rotors created more dust my neighbour tells me.

Doubt rotor speed has any significant effect on feeder dust exit but never adjusted that with any thought of whether it would or not.

 

[seedcleaner]

I always thought the factory Claas MAV chopper needed vented upstream so it could suck some air in that it is trying to blow out.

 

[Don Boles]

I always thought the factory Claas MAV chopper needed vented upstream so it could suck some air in that it is trying to blow out.

It was for increased spread width but with no upstream differences between various chopper setups.
A Prochop is just straight paddles as a radial spreader does spreading duties.

 

[vailcat]

The deere knives are like mav knoves. They have the wings to make increased air speed.

 

[SouthernSK]

Trex have you taken the top shield off on the fan housing to make sure there is no straw build-up blocking the fan? We mainly straight cut and dust at the feeder house is rarely a problem with our lexions.

 

[meskie]

Trex have you taken the top shield off on the fan housing to make sure there is no straw build-up blocking the fan? We mainly straight cut and dust at the feeder house is rarely a problem with our lexions.

We straight cut most things and found dust can be a big problem with ours. The fan plugs up on ours after about 20 minutes so we quit cleaning it. The HP feeder only has half the size of fan opening which I think is a problem.

 

[SouthernSK]

Our fans have worked well with our 590s with the HP feeder house. We have taken off the covers various times and it has been clean. I remember years ago people were putting a wire mesh or something in the hole in the feeder house that the fan sucks from to prevent it from plugging. If the fan was plugged dust would be an issue.

 

[trex]

Our fans have worked well with our 590s with the HP feeder house. We have taken off the covers various times and it has been clean. I remember years ago people were putting a wire mesh or something in the hole in the feeder house that the fan sucks from to prevent it from plugging. If the fan was plugged dust would be an issue.

I don’t know how your fans stay clean. I’ve tried the wire mesh..tried putting a spacer between cover and feeder house but the area under the fan plugs after a few minutes in soybeans.

 

[rollyrockyflat]

We have 2016 760 and 780 feeder house dust never goes away. Clean fan daily. new fan. new fan belt. Calm day doing pulse crops, Its just a guessing game whats happening up front

 

[Don Boles]

Calm day doing pulse crops, Its just a guessing game whats happening up front

Ah, harvesting by the braille system.