Sprocket indexing charts, Twin row sprocket indexing – Great Plains YP825AR Material Rate User Manual
Page 23
Great Plains Manufacturing, Inc.
Sprocket Indexing (Stagger)
19
2013-11-11
401-923B
Sprocket Indexing Charts
Twin Row Sprocket Indexing
Note: This is NOT a seed rate chart.
This is a chart for staggering seed spacing
between rows of a twin-row planter.
Verify sprocket tooth position with the top length of chain taut.
Metric charts begin on page 87.
Twin Row
Set front meter to tooth “1”.
Page 1 of 3
Set rear meter to indicated Initial tooth number.
Advance or Retard to adjust - see instructions in Seed Rate Manual.
These Columns are for Fine Adjustment Only
Population Seeds/Acre
Initial Rear
20% Rear Seed Drop Adjust
40% Rear Seed Drop Adjust
30 in.
75 cm
Tooth Number
Retard
Advance
Retard
Advance
17000
17272
7
3
4
6
16
17500
17780
19
10
16
13
16
18000
18288
19
10
16
13
16
18500
18796
3
7
19
10
16
19000
19304
4
6
19
9
12
19500
19812
4
1
15
17
12
20000
20320
18
11
15
14
12
20500
20828
8
2
15
5
8
21000
21336
8
5
11
5
8
21500
21844
14
15
11
18
8
22000
22352
14
15
11
18
4
22500
22860
12
9
7
1
4
23000
23368
10
19
7
3
4
23500
23876
10
19
7
3
4
24000
24384
16
13
3
10
19
24500
24892
6
13
3
10
19
25000
25400
6
4
3
7
19
25500
25908
1
17
18
14
15
26000
26416
2
17
18
14
15
26500
26924
2
8
18
11
15
27000
27432
5
5
18
18
11
27500
27940
5
2
14
18
11
28000
28448
17
12
14
15
11
28500
28956
9
1
14
3
7
29000
29464
9
6
10
3
7
29500
29972
13
16
10
19
7
30000
30480
13
16
10
19
3
30500
30988
13
10
6
7
3
31000
31496
9
10
6
4
3
36076R
Air-Pro
®
Meter Stagger Timing Chart (U.S. customary units)