Seeding range, 20 inch rows, 12 finger meter, Table of contents index, Great plains manufacturing, inc – Great Plains 3N-4025P Operator Manual User Manual
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64
3N-40P
Great Plains Manufacturing, Inc.
196-538M
2014-01-29
Seeding Range, 20 Inch Rows, 12 Finger Meter
20” Row Spacing
For Round Corn optimum meter speed is 45 to 75 RPM
For Flat Corn optimum meter speed is 65 to 75 RPM ( Shaded Area)
Ground Speed
Calibration Number
1492
High Range
Sprockets Combination
Seed
Population
(seeds/acre)
Seed
Spacing
(inches)
7 mph
6.5 mph
6 mph
5.5 mph
5 mph
4.5 mph
4 mph
3.5 mph
Motor
Driver
Mainshaft
Driven
Optimum
Meter
(rpm)
Optimum
Meter
(rpm)
Optimum
Meter
(rpm)
Optimum
Meter
(rpm)
Optimum
Meter
(rpm)
Optimum
Meter
(rpm)
Optimum
Meter
(rpm)
Optimum
Meter
(rpm)
21T
17T
19,960
15.7
20,699
15.2
21,495
14.6
22,308
14.1
22,355
d
e
d
n
e
m
m
o
c
e
R
t
o
N
0
.
4
1
23,134
13.6
45
23,286
13.5
46
24,024
13.1
47
24,299
12.9
48
24,985
12.6
49
46
26,026
12.1
51
47
27,004
11.6
53
49
45
27,157
11.5
53
50
46
28,004
11.2
55
51
47
28,178
11.1
55
51
47
29,082
10.8
57
53
49
45
29,222
10.7
57
53
49
45
29,352
10.7
58
54
49
45
29,414
10.7
58
54
50
45
30,245
10.4
59
55
51
47
30,346
10.3
60
55
51
47
30,440
10.3
60
56
51
47
30,527
10.3
60
56
51
47
31,505
10.0
62
57
53
49
31,560
9.9
62
58
53
49
31,610
9.9
62
58
53
49
31,657
9.9
62
58
53
49
31,701
9.9
62
58
53
49
32,875
9.5
65
60
55
51
46
34,092
9.2
67
62
57
53
48
34,139
9.2
67
62
57
53
48
34,190
9.2
67
62
58
53
48
34,245
9.2
67
62
58
53
48
34,304
9.1
67
63
58
53
48
35,404
8.9
70
65
60
55
50
45
35,505
8.8
70
65
60
55
50
45
35,614
8.8
70
65
60
55
50
45
35,733
8.8
70
65
60
55
50
45
36,742
8.5
72
67
62
57
52
46
36,820
8.5
72
67
62
57
52
46
36,984
8.5
73
67
62
57
52
47
37,163
8.4
73
68
63
57
52
47
38,354
8.2
75
70
65
59
54
48
38,592
8.1
70
65
60
54
49
39,796
7.9
73
67
61
56
50
45
40,021
7.8
73
67
62
56
51
45
41,526
7.6
70
64
58
52
47
43,256
7.3
73
67
61
55
49
44,478
7.1
75
69
62
56
50
44,986
7.0
69
63
57
50
46,411
6.8
72
65
59
52
46
46,717
6.7
72
66
59
52
46
48,345
6.5
75
68
61
54
47
48,447
6.5
Not Recommended
75
68
61
54
48
50,279
6.2
71
63
56
49
52,213
6.0
73
66
59
51
54,147
5.8
68
61
53
32195