178 Firmware Version 6.0
Gear Ratio Drawing Shaft Drives
Seed Rate Drive Setting.
Carry the Decimal place to the nearest 0.001 for accurate results.
If determining shaft ratios for any shaft not listed in the table above, rotate input shaft (driver) 10 times.
Count how many times the output (driven) shaft turns. Divide the number of turns of the input shaft by
the number of turns of the output shaft.
Table: Shaft Ratio 2
Planter Brand Driven
Drive
Case IH Planters 2 2
John Deere Planters 3 2
White Planters 11 5
Note: These values are for the shaft only. Drive/Driven value
between the Seed Rate Motor and Planter Drive Sprocket must
still be determined.
29
X
28
=
812
= 2.3743
18 19 342
Driven/Drive 1 X Driven/Drive 2 = Gear Ratio
Planter Drive
Sprocket
X
Seed Meter Shaft
= Gear Ratio
Seed Rate Motor Planter Drive Shaft
Driven/Drive 1 X Driven/Drive 2
Seed Rate Motor (Drive)
(18 Tooth Sprocket)
Planter Drive
Shaft
Sprocket
(Driven)
(29 Tooth
Sprocket)
Planter Drive Shaft
Sprocket (Drive)
(19 Tooth Sprocket)
Planter Drive Shaft
Sprocket (Driven)
(28 Tooth Sprocket)
Max Meter
Speed
Gear
Ratio
150
2.374
rpm
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