Corn/Soybean Settings for Flagship Combines- 7230, 8230, 9230, 7120, 8120, 9120 and 70/8010 Combines

Here are some suggested settings that we have used in N.A.  This will help you get a good start and you can adjust accordingly to your conditions.

Corn:
Modules: Large wire modules for the concaves – No Wires pulled.  Recommend skip wire modules in the grate area.
Rotor configuration: For high volume corn, suggest 4 straight bars on the rear of the rotor over the 3 and 4th module positions.  Also, Recommend  the use of 8 spike rasps bars which also go on over the 3rd and 4th module.
Vanes: Usually in Medium Position.  (alternate suggestion-Can move the back 4 vanes to slow position in high yielding corn to prevent any rotor loss.)
Rotor Speed = 380 to 410 (Suggest no less than 350 RPM. Use centrifugal action to separate/release corn out of rotor.)
Concave module Clearance = With V21 software or higher, use 18 to 25 mm for concave setting.   For earlier 10 series combines, it is about  7.2. Go up or down from this slightly (The width of a cob should just fit between the rasp bar and the pinch point) (The idea is to roll the ears through the rotor and not tumble them with too wide of a setting.) Too wide of a setting will tumble the ears and cause excessive sieve load with broken cobs.
Pre Sieve = 4th Notch (If you ever get grain in the cleaning fan, chances are you have the pre-sieve too wide.)  This is important adjustment.  if the crop is on the dryer side and you have the 1 and 5/8 corn slat sieve, the visual louver opening would be about the thickness of a corn seed (or just a little less).  The long finger corn slat sieve still has a lot of opening when it is closed.  We only want 15% of the grain to go through the pre sieve.  If the corn is on the wetter side like 25% plus, you maybe able to use a wider setting (such as 5 or 6th notch).
Chaffer Sieve = Cab indicator baseline setting is 17 or 21/32 inches.   Note:  With good dryer corn, a number some folks are using 21 to23 mm.
Shoe Sieve = Cab Indicator baseline setting is of 15 or 19/32 inches. Can go more if sample is clean. Some may go as high as 18 mm if condition permit.
Fan Speed = 1050 to 1150 RPM
Chopper = Low Speed (always drop stationary knives for low speed. Never chop in in low speed.)

Soybeans:
Modules: Large wire modules for the concaves – No Wires pulled.  Recommend skip wire modules in the grate area.
Rotor configuration: You probably will leave the same configuration in that you have for corn.  However, you would not need straight bars on the rotor for just soybeans.  It is still ok to use 8 spike rasps on back of rotor
Vanes: Medium position
Rotor Speed = 600 to 650 RPM  (Many of us usually like to take rotor speed up until I see the soybeans actually crack in the grain tank and then, back the rotor down 70 RPM’s to find the sweet spot!  We then get no crackage, but can run maximum sweet spot rotor speed)  This is a nice way to use for different varieties and moisture levels.
Concave module Clearance = 15 to 18 for the 20 series (this is in millimeters- Version 21 and higher).   On the older version 10 series, it is about 6 on Cab indicator.
Pre Sieve = 3rd or 4th Notch.  This is important adjustment.  if the crop is on the dryer side and you have the 1 and 5/8 corn slat sieve, the visual louver opening would be about the thickness of a soybean (or just a little less).  The long finger corn slat sieve still has a lot of opening when it is closed.  We only want 15% of the grain to go through the pre sieve.
Chaffer Sieve = Cab indicator baseline is 16 ( 5/8 inch). Perhaps down to 12.  If you have 1 and 5/8 long finger corn sieve, you can even use a cab indicator setting less than 16 (maybe even down to 12).
Shoe Sieve = Cab Indicator baseline setting is 12  (15/32 inches).  Perhaps, down to 9 with 1 and 5/8 inch shoe sieve.
Fan Speed = 1000 to 1050 RPM
Chopper = High Speed with stationary knives engaged.
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