1440 rasp bars

[Mike56073]

How far down do the rasp bars need to be to warrant replacement?  Mine are 1/4” from peak to valley. Also, I have 6 pads in the front/ middle of rotor where a straight rasp bar could be mounted, but nothing is there.  This is a standard rotor that only sees corn/beans.  
      On my concaves, (large wire), the first one has all of the wires in it yet, the middle/back ones have every other wire removed.  The rear grates are key stock.  Is there anything I can upgrade to, to improve threshing?  

[766 Man]

1 hour ago, Mike56073 said:

How far down do the rasp bars need to be to warrant replacement?  Mine are 1/4” from peak to valley. Also, I have 6 pads in the front/ middle of rotor where a straight rasp bar could be mounted, but nothing is there.  This is a standard rotor that only sees corn/beans.  
      On my concaves, (large wire), the first one has all of the wires in it yet, the middle/back ones have every other wire removed.  The rear grates are key stock.  Is there anything I can upgrade to, to improve threshing?  

  Quater inch is not much.  How is quality in terms of cracked seed?  It has been said that the closer to new tolerance/clearance the less power needed or a gain in fuel efficiency.  How true is the cage housing?  Do you have a straight edge to check? 

[Drysleeves]

That sounds like a typical standard rotor. Key stock grates tend to knock stray kernels out of the husk as was their purpose.

Best rotor for corn, arguably better than the hybrid setups made to handle tough stemmed crops like soybeans because the more aggressive profile will easily crack corn when not monitored as conditions change.

I'm so old I remember having to pull the standard separator grates for small grain to bolt the bars on the outside in order to save the straw for baling and then reversing the procedure for fall. Still have those grates as they've been on a shelf for decades after the key stock variant arrived. For a time we'd exchange them for the smooth grates in small grain but now they just rest comfortably since the 24" rotor has left the building. 

[Mike56073]

1 hour ago, 766 Man said:

  Quater inch is not much.  How is quality in terms of cracked seed?  It has been said that the closer to new tolerance/clearance the less power needed or a gain in fuel efficiency.  How true is the cage housing?  Do you have a straight edge to check? 

I haven't checked the cage housing.  The seed quality has been good, last year it was cracking a few more than I'd like to see, but we were also combining 10 percent beans and 15 percent corn.  

[1967806]

1 hour ago, Mike56073 said:

I haven't checked the cage housing.  The seed quality has been good, last year it was cracking a few more than I'd like to see, but we were also combining 10 percent beans and 15 percent corn.  

Seen some beans last fall go from 12-13% to 8-9% in two days. Even had some dew in the mornings a couple of times but beans didnt absorb it. Just make a guy wish we would have had our A game plan the first day. Never happens here the first day. I always say day one of harvest or plant makes one feel like a rookie that day. 

[Mike56073]

9 hours ago, 1967806 said:

Seen some beans last fall go from 12-13% to 8-9% in two days. Even had some dew in the mornings a couple of times but beans didnt absorb it. Just make a guy wish we would have had our A game plan the first day. Never happens here the first day. I always say day one of harvest or plant makes one feel like a rookie that day. 

Yeah, I had it 2 years ago where I started the day in beans at 15%, by the end of the day they went to 9.   The thing that sucked was once the sun went down they got tough and ropey almost immediately.  

[HydroTek]

... and that is why you can't run the same settings in the morning that you will at noon -- then again if still running at night

unless you want cracks and splits in the grain -- or throwing grain on the ground 

[nate]

We got a parts 1460 out in the weeds that had all new rotor parts put on before the engine went.   I could check if I remember.  They could even be for sale…

[acem]

I'm pretty sure different rasp bars have different dimensions.

Specialty vs grain rotor. 

Spiked vs standard.

We use all spiked in rice on the specialty rotor. Works pretty good with green stem soybeans too.

Does ok in corn but breaks up the cobs pretty small.

 

[Mike56073]

43 minutes ago, nate said:

We got a parts 1460 out in the weeds that had all new rotor parts put on before the engine went.   I could check if I remember.  They could even be for sale…

Thanks, but as of this morning I have all new ones ordered.

[DT Fan]

16 hours ago, nate said:

We got a parts 1460 out in the weeds that had all new rotor parts put on before the engine went.   I could check if I remember.  They could even be for sale…

Does that machine happen to have a chopper in it Nate?

[nate]

On 9/9/2026 at 5:01 AM, DT Fan said:

Does that machine happen to have a chopper in it Nate?

Nope.  Neither of the two we have do.  

[DT Fan]

8 hours ago, nate said:

Nope.  Neither of the two we have do.  

Darn, would have been a great reason for a road trip!

[acem]

Don't think I've ever seen a chopper on an axial flow combine.

I know they exist but they are uncommon here. 

I can't imagine cutting rice with one installed. It would have a very short lifespan.

 

[HydroTek]

I have never seen a chopper either

usually guys are trying to get longer straw so it will stay in a bale for wheat straw 

corn and beans mostly around here and the spinners do a good job 

[jass1660]

I put an aftermarket TSR chopper in my 1660 that didn’t have one. 

[DT Fan]

The chopper would help with soybean residue. Some years it's not much of an issue, others.....

[Mike56073]

On 9/13/2026 at 7:37 AM, acem said:

Don't think I've ever seen a chopper on an axial flow combine.

I know they exist but they are uncommon here. 

I can't imagine cutting rice with one installed. It would have a very short lifespan.

 

I have a chopper in mine