| To determine pump setting:1. Insert your variables (in RED) 2. Set your Sprocket Ratio 3. read the output (in GREEN) | ||||||||
| Gallons per acre desired | 30 | |||||||
| Swath width in inches | 480 | ( NOTE: a 12 Row setup with 30″ rows = 360 ) | ||||||
| *loaded radius of tire | 14 | (measured from ground surface to center of hub.) | ||||||
| **Sprocket ratio | 7.917 | :1 | Sprocket ratio calculator | |||||
| Output in Cu. In. per Rev. | 5.892 | Replace the 1’s below with your data. If you know your current ratio, set the first drive teeth box to the known ratio and leave the driven teeth at 1 otherwise, follow the steps below to calculate your sprocket ratio. |
||||||
| Read recommended pump settings below. Set your pump between the recommended settings to achieve the desired output. |
**Determine size (number of teeth) of drive wheel sprocket and driven wheel sprocket. To use this calculator, replace the 1’s with drive teeth and driven teeth. |
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| Pump Output in cu. inch / revolution | Press Wheel Note: | |||||||
| Pump setting | P P 1 | P P 2 | On units with press wheels, the radius in inches of the drive wheel can be considered as number of teeth on the drive sprocket and the radius of the press wheel can be considered as the number of teeth on the driven sprocket. | |||||
| 1 | 0.595 | 1.190 | Drive teeth | Driven teeth | Drive shaft | |||
| 2 | 2.634 | 5.268 | 60 | 18 | 1st | |||
| 3 | 4.298 | 8.596 | 19 | 8 | 2nd | |||
| 4 | 6.108 | 12.216 | 1 | 1 | 3rd | |||
| 5 | 7.972 | 15.944 | 1 | 1 | 4th | |||
| 6 | 9.982 | 19.964 | 1140 | 144 | ||||
| 7 | 11.508 | 23.016 | Pump NOT TO EXCEED 210 RPM | |||||
| 8 | 13.172 | 26.344 | MPH | Pump RPM | MPH | Pump RPM | ||
| 9 | 14.970 | 29.940 | 4 | 380.15 | 8 | 760.3 | ||
| 10 | 16.220 | 32.440 | 5 | 475.19 | 9 | 855.34 | ||
| 11 | 16.800 | 33.600 | 6 | 570.23 | 10 | 950.38 | ||
| 12 | 17.050 | 34.100 | 7 | 665.27 | 11 | 1045.42 | ||
| From | 3 | 2 | Maximum ground speed | 2 MPH | ||||
| To | 4 | 3 | 3.26 | fluid ounce output per pump revolution | ||||
| 1 US fluid ounce = 1.8046875 cubic inches | ||||||||
| 4.95 | tire rotations to achieve 1 gallon flow | |||||||
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