Sprocket indexing (stagger), Table of contents metric charts, Great plains manufacturing, inc – Great Plains YP2425A Material Rate User Manual
Page 24: 626b
401-626B
Table of Contents Metric Charts
2012-02-29
22
YP2425A
Table of Contents Metric Charts
Great Plains Manufacturing, Inc.
Sprocket Indexing (Stagger)
If you are planting:
• with a seed disc having 24 cells or less,
• twin-row crops,
• at seed populations below 45,000 seeds/ac
(111 000 seeds/ha),
you can synchronize each pair of adjacent meters in a
twin row so that you achieve the maximum seed-to-seed
spacing between the units of the pair.
If the initial indexing does not provide equal spacing, see
“Indexing Fine Adjustment” on page 25.
If you are planting:
- single-row,
- or with seed discs or 25 cells or more,
- or a volumetric crop,
- or twin row with seed spacings below
9
1
⁄
4
inch (23.5 cm),
this section of the manual, and the sprocket indexing
charts, do not apply to your operations.
28420
Source:
Dated:
2009-08-11T11:49
Provider
GWA
File:
/files/iso/text/29500/29715.ods
Sheet:
29715
Rendered:
2010-04-27T11:55
By: RJN
Export As:
/files/iso/text/29500/29715A.pdf
Import As:
/files/iso/text/29500/29715A.eps
Twin Row 30in
Set front meter to tooth “1”.
Page 1 of 2
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
Initial Rear
20% Rear Seed Drop Adjust
40% Rear Seed Drop Adjust
Seeds/Acre
Tooth Number
Retard
Advance
Retard
Advance
17000
7
3
4
6
16
17500
19
10
16
13
16
18000
19
10
16
13
16
18500
3
7
19
10
16
19000
4
6
19
9
12
19500
4
1
15
17
12
20000
18
11
15
14
12
20500
8
2
15
5
8
21000
8
5
11
5
8
21500
14
15
11
18
8
22000
14
15
11
18
4
22500
12
9
7
1
4
23000
10
19
7
3
4
23500
10
19
7
3
4
24000
16
13
3
10
19
24500
6
13
3
10
19
25000
6
4
3
7
19
25500
1
17
18
14
15
26000
2
17
18
14
15
26500
2
8
18
11
15
27000
5
5
18
18
11
27500
5
2
14
18
11
28000
17
12
14
15
11
28500
9
1
14
3
7
29000
9
6
10
3
7
29500
13
16
10
19
7
30000
13
16
10
19
3
30500
13
10
6
7
3
31000
9
10
6
4
3
29715A
/files/manual/docs/gp/401-625b/charts/ods/reference/air_pro_meter_timing.ods
Air-Pro
®
Meter Stagger Timing Chart
Thumbnail view. Actual charts begin on page 26.
Crushing Hazard:
Install transport locks. Do not rely on hydraulics to hold the
planter at raised. This adjustment takes some time.
Due to limitations on the number of sprocket teeth and
wheel cell count, it may not be possible to obtain perfect
stagger. Charts and fine adjustment provide the optimal
available stagger.