202-578B
Table of Contents
02/22/2019
18
Table of Contents
Great Plains Manufacturing, Inc.
2SNG24 & 2SNG30
5. Fill three or more compartments at least
1
2
full of
seed in the native grass box. Pull seed hoses off
openers under the compartments.
6. Turn gauge wheel or crank several times to fill seed
cups with seed. Turn wheel or crank until seed falls
to the ground from each cup.
7. Place empty container under the seed tubes to
gather the seed as it is metered.
8. Note the Drive Type (see Figure 15), and native
Grass sprocket pair (see Figure 16 on page 19). This
information is needed for step 9 and for the calcula-
tions later.
9. Rotate crank or gauge wheel for one acre, either as
tallied on the Acremeter, or as counted, based on the
table at right.
10. Check that the three seed cups have plenty of seed
coming into them.
This calibration procedure is shown in example on
page 20.
11. Weigh metered seed, and subtract the initial weight
of the container. Divide this number by 3 (number of
cups metered).
12. Multiply by the number of openers on the drill. This
equals the pounds per acre at this drive setting.
Refer to the formulas on page 20.
Note: Refer to the drive setting charts on page 21, the
numbers listed are the number of revolutions of
the native grass meter shaft at a particular drive
type and sprocket range.
13. To adjust this number, take the pounds per acre
divided by the shaft revolutions. This is the pounds
per shaft revolution.
Note: These settings are based on 9.5L-15 tires inflated
to factory specifications.
Revolutions for One Acre
2SNG24
2SNG30
Crank: Drive Type 1
151
122.5
Crank: Drive Type 1A
310.5
251
Crank: Drive Type 2
44.5
40
Crank: Drive Type 2A
101.5
82
Gauge Wheel
225
182
MeasuredSeed EmptyContainer
–
3
-----------------------------------------------------------------------------------
PoundsPerSeedCup
=
PoundsPerSeedCup NumberOfOpeners
PoundsPerAcre
=
Total Row Units
Model
Spacing
Rows
2SNG24-2810
10 inch
28
2SNG24-3875
7.5 inch
38
2SNG30-3610
10 inch
36
2SNG30-4875
7.5 inch
48
