Great Plains YP1625 Material Rate - Manual (Page 56)

Great Plains Mfg., Inc.
52
401-263B 11/23/2011
12-Finger Meter Stagger Adjustment
Before making any Indexing Adjustments, check actual
planted seed spacing. Seed Spacing is found by measur-
ing the distance between 25 correctly planted seeds in
one row and dividing by 24. (A visible skip or double
should be counted as one seed.) Make sure current front
index is 1, and current rear sprocket index number
matches the number in the indexing chart for actual seed
spacing being planted.
Find your current indexing value row in the chart on
page 49.
Each (sprocket tooth) number directly above or below the
current rear meter sprocket setting in the right most col-
umn of the seed indexing chart represents a small move-
ment of the rear row seed relative to the front row seed.
Changing the rear sprocket to the next number down in
the chart retards, moving each rear row seed back a
small amount.
Changing the rear sprocket to the next number up in the
chart advances, moving each rear row seed ahead a
small amount.
Example 1:
The 12 Finger Twin Row 30in planting population is
37000 or 11.3in seed spacing. The chart setting for the
rear sprocket is [ 3 ]. Each rear row seed should fall 5.6in
behind the front row seed.
If each rear row seed measures 7in behind the front row
seed, reset the rear meter sprocket to the next number
down in the chart [ 14 ]. This will move the rear seeds
ahead and make the stagger closer to 5.6in.
Example 2:
The 12 Finger Twin Row 30in planting population is
37000 or 11.3in seed spacing. The chart setting for the
rear sprocket is [ 3 ]. Each rear row seed should fall 5.6in
behind the front row seed.
If each rear row seed measures 4in behind the front row
seed, reset the rear meter sprocket to the next number
up in the chart [ 11 ]. This will move the rear seeds back
to make the stagger closer to 5.6in.
End of Finger Meter Sprocket Indexing (Stagger).
Null4:
28422
Import as:
12 Finger Meter Twin Row Sprocket Indexing
30in Twin Row
Population Single Row
Seeds per Seed Front Rear
Acre Spacing (in) Meter Meter
26,600 to 28,300 14.8 to 15.7 1 13
28,300 to 29,900 14.0 to 14.8 1 5
29,900 to 31,500 13.3 to 14.0 1 16
31,500 to 33,000 12.7 to 13.3 1 8
33,000 to 34,700 12.1 to 12.7 1 19
34,700 to 36,200 11.6 to 12.1 1 11
36,200 to 37,800 11.1 to 11.6 1 3
37,800 to 39,300 10.6 to 11.1 1 14
39,300 to 40,800 10.3 to 10.6 1 6
40,800 to 42,500 9.8 to 10.3 1 17
42,500 to 44,000 9.5 to 9.8 1 9
44,000 to 45,400 9.2 to 9.5 1 1
45,400 to 47,000 8.9 to 9.2 1 12
47 000 to 48 600 8 6 to 8 9 1 4
../pdf/index_30in_12f.pdf
../eps/index_30in_12f.eps
Set Sprocket to
Tooth Number on ..
Advance
Retard
Current
Null4:
Figure 14: Portion of
Sprocket Indexing Chart