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Sprocket indexing (stagger), Table of contents metric charts, Great plains manufacturing, inc – Great Plains YP2425A Material Rate User Manual

Page 24: 626b

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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.