Whitecaps - NH 9080 Rotary?

[sumdumguy]

Concaves at tightest setting, 4 filler blanks per roter and cylinder at 1100 RPM, still 30% whitecaps in grain tank in a 50 bus/acre Glenn wheat crop. Any ideas?

[fjlip]

Try open concave, 9870 running at #14. 980 RPM, 4 out of 9 concave covered. Utmost wheat. Very clean.

[Jay-mo]

Have you checked whether the "whitecap" is unthrashed heads or just chaff?
You might be overloading your sieves.
I know Glenn can be hard to thrash out but my experience with our CR's is its easier to over thrash then you think.
If those whitecaps are just trash, try opening your clearance a bit and increasing your air.

[hobbyfrmr]

I am not too familiar with NH combines but check for broken hangers or hardware that hold/carry the concaves.

[cottonpicken]

Maybe it's not as tight as you think and the calibration is off wouldn't know how to zero it out on a nh. Or is possible to have to many filler plates while running that tight and fast?

[fjlip]

Tight threshes in a conventional by impact, not a rotary. Crop threshes by gentle centrifugal but needs space under elements. Try feed faster, could be running empty is straw is short.

[Klause]

Our masseys we couldn't get s clean sample in wheat till er opened up the concaves to 3/4" run the rotor full out fillers in first 3 concaves and push the combine hard. Now the sample ample is pretty neat perfect.

[jethro456]

On our 9070, the concave extensions have to be on the in position for wheat.

[furrowtickler]

Buy a gleaner - set er and fly . J/k
Good luck
We used to have Masseys - they drove us nuts

[lesm]

We have trailing rub bars on our NHs run concave a true 1/8 and rotors at 1250. No filler plates. Absolutely no whites caps.