The Combine Forum banner

White caps on spring wheat sample

5311 Views 6 Replies 6 Participants Last post by  hahler2
Having a little trouble with the sample in our 9760 combine. We are getting some white caps. Dockage hasn't been too bad at the elevator. About 1.2 percent or so but I would like to clean it up a little if I can.

Feed Accelerator on high
Rotor at 850
Fan at 900
Concave at 5
Top at 14
Bottom at 6

We are using the small wire concaves with bands around the middle of the middle concave and the front of the front concave. Everything was perfect in winter wheat. Our dockage was only .5. But now that we've moved to spring wheat we are getting white caps and higher dockage. I've tried playing with settings to get it better and where we have it right now seems to be about the best. Any ideas?
1 - 7 of 7 Posts
Rotor full speed. Should be 1080 no load if belt is set right. Concave 6-8 if leveled and zeroed properly. Front concave fully covered, one or two bands in middle concave. Remember to keep rotor full. Most efficient threshing is under full load.
I see you can ignore operators manual fluff too (1000 rpm max rotor).
I never ran a concave that open in hard red spring wheat, unthreshed losses are unacceptable, never more 4 mils and in tough threshing 0.
I have observed 10% losses left in the head otherwise. Kind of a balance between fuel consumption, production, and losses.

You maybe experiencing a varity trait that is causing whitecaps. Last year I could not clean Glenn, dockage went from <1% to 5 to 8% no matter what I did. Briggs is also a harder thrashing wheat.

I raised two crops of Glenn last year, first and last. I beleive Briggs and for sure Glenn are NDSU releases and all their releases are very hard thrashing.
Third that, rotor 1000 and concave 0-2. Filler plates on 1,2, 4, & 5 locations. As I remember the tailings return dumps back in around 4 or 5.
Tailings dumps in around 5. That's why we have the cover on there. I will try that tomorrow and see if I can clean it up a bit. Thanks!

Edit. It's hard red spring. Briggs is the variety.
1 - 7 of 7 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.