Stilt Pro Equipment Top Hopper Gobbler · Fertilizer Topdresser

Gate Height Calculator

Instructions to calibrate fertilizer output for the Top Hopper.

Top Hopper Gobbler fertilizer topdresser, isometric line drawing showing the hopper, spreader drum, and gate
1

Choose whether you'll control by Motor Speed or by Gate Position.

2

Enter your target fertilizer rate and product density from the bag label.

3

Enter your Gobbler output rate — yards of material moved per hour.

4

Enter the speed dial position or gate height you're starting from.

5

Read the matching value on the right, then set your machine to match.

Application Job

Example job pre-filled below — replace with your own numbers.

6.0
0 (stopped) to 10 (maximum drum speed) — gate height will be calculated to match
lbs / yd
Target application rate for this product
lbs / ft³
Loose bulk density of the product being spread
yd / hr
Yards of material this Gobbler moves per hour of travel
Set gate height to
1.03in

Measured from the hopper floor to the bottom edge of the gate

Requested rate exceeds the gate's maximum opening. Lower the speed position or Gobbler output rate.
Machine specifications

Fixed to this Gobbler's drive and hopper geometry. Only change these if your unit differs from standard.

RPM
:1
in
in
in
Calculation detail

The full chain from speed dial to gate height, for anyone who wants to check the math.

Job Notes

Fertilizer type, speeds, product, etc. Saved to this device.