40in rows, 12-finger indexing, Twin row 40" 12 finger meter indexing chart – Great Plains 2525P Material Rate User Manual
Page 68
Great Plains Mfg., Inc.
66
118-231B
03/23/2010
40in Rows, 12-Finger Indexing
NOTE: This chart is for indexing finger pickup meter sprockets
only!!! Indexing sprockets will help time twin rows to drop seeds
in an alternating sequence. This chart is NOT a seed rate chart.
Twin Row 40" 12 Finger Meter Indexing Chart
Front Meter
Rear Meter
Sprocket Tooth #
Sprocket Tooth #
13800
15000
22.7
20.9
1
7
15000
16200
20.9
19.4
1
18
16200
17400
19.4
18.0
1
10
17400
18500
18.0
17.0
1
2
18500
19600
17.0
16.0
1
13
19600
20900
16.0
15.0
1
5
20900
22100
15.0
14.2
1
16
22100
23300
14.2
13.5
1
8
23300
24500
13.5
12.8
1
19
24500
25600
12.8
12.3
1
11
25600
26800
12.3
11.7
1
3
26800
28000
11.7
11.2
1
14
28000
29200
11.2
10.7
1
6
29200
30400
10.7
10.3
1
17
30400
31400
10.3
10.0
1
9
31400
32700
10.0
9.6
1
1
32700
33800
9.6
9.3
1
12
33800
35000
9.3
9.0
1
4
35000
36300
9.0
8.6
1
15
36300
37400
8.6
8.4
1
7
37400
38600
8.4
8.1
1
18
38600
39700
8.1
7.9
1
10
39700
40800
7.9
7.7
1
2
40800
42200
7.7
7.4
1
13
42200
43300
7.4
7.2
1
5
43300
44500
7.2
7.0
1
16
44500
45700
7.0
6.9
1
8
45700
46800
6.9
6.7
1
19
46800
48000
6.7
6.5
1
11
NOTE: If rear row does not appear centered between front row seeds, small adjustment
may be made to the stagger. Refer to "Adjustments to Seed Stagger on 12 Finger Meters."
NOTE: Indexing finger pickup meters can be done with the drill in planting position or with
the drill raised (all openers in their lowest position).
1. Pick the planting population which you want to plant from the chart above.
NOTE: When indexing sprockets, the top side of the meter drive chain must be tight.
2. Set the front row meter drive sprockets so the tooth stamped #1 is straight up.
3. Set the rear row meter drive sprockets to match the number from the chart above. Be sure
Population Range
Seed Spacing Range
the number is straight up.