Great Plains YP1625 Material Rate - Manual (Page 53)

Great Plains Mfg., Inc.
49
11/23/2011 401-263B
Sprocket Indexing Charts
1. For: your 6- or 12-finger meter, and
your twin row spacing (30in on this page)
find your seed rate in the Population column, or your
seed spacing in the Seed Spacing column. Seed
spacing is seed-to-seed within a single row of a twin
row pair.
2. At the front/forward row unit of a pair, set the driven
(final) sprocket of the meter drive so that tooth
stamped #1 is straight up (TDC, 12:00 position).
3. At the rear/trailing row unit of the pair, set the driven
sprocket so that the tooth number at “Rear Meter” is
in the straight up 12:00 position.
These are NOT seed rate or seed spacing charts. These are
charts for staggering seed spacing between the rows of a twin
row.
Note: For adjusting spacing between rows of the pair,
see “Indexing Fine Adjustment” on page 51.
Verify the 12:00 sprocket tooth position with the top length of
chain taut.
30in Twin Row Sprocket Indexing
Null4: Null4:
Null4:
6 Finger Meter Twin Row Sprocket Indexing
30in Twin Row
Population Single Row
Seeds per Seed Front Rear
Acre Spacing (in) Meter Meter
15,700 to 17,300 24.2 to 26.6 1 4
17,300 to 18,800 22.2 to 24.2 1 7
18,800 to 20,400 20.5 to 22.2 1 10
20,400 to 22,000 19.0 to 20.5 1 13
22,000 to 23,600 17.7 to 19.0 1 16
23,600 to 25,000 16.7 to 17.7 1 19
25,000 to 26,600 15.7 to 16.7 1 3
26,600 to 28,300 14.8 to 15.7 1 6
28,300 to 29,900 14.0 to 14.8 1 9
29,900 to 31,500 13.3 to 14.0 1 12
31,500 to 33,000 12.7 to 13.3 1 15
33,000 to 34,700 12.1 to 12.7 1 18
34,700 to 36,200 11.6 to 12.1 1 2
36,200 to 37,800 11.1 to 11.6 1 5
37,800 to 39,300 10.6 to 11.1 1 8
39,300 to 40,800 10.3 to 10.6 1 11
40,800 to 42,500 9.8 to 10.3 1 14
42,500 to 44,000 9.5 to 9.8 1 17
44,000 to 45,400 9.2 to 9.5 1 1
45,400 to 47,000 8.9 to 9.2 1 4
47,000 to 48,600 8.6 to 8.9 1 7
48,600 to 50,400 8.3 to 8.6 1 10
50,400 to 51,800 8.1 to 8.3 1 13
51,800 to 53,300 7.8 to 8.1 1 16
Set Sprocket to
Tooth Number on ..
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
48,600 to 50,400 8.3 to 8.6 1 15
50,400 to 51,800 8.1 to 8.3 1 7
51,800 to 53,300 7.9 to 8.1 1 18
53,300 to 55,000 7.6 to 7.9 1 10
55,000 to 56,600 7.4 to 7.6 1 2
56,600 to 58,200 7.2 to 7.4 1 13
58,200 to 59,700 7.0 to 7.2 1 5
59,700 to 61,300 6.8 to 7.0 1 16
61,300 to 62,900 6.7 to 6.8 1 8
62,900 to 64,400 6.5 to 6.7 1 19
Set Sprocket to
Tooth Number on ..