| Seed Spacing | Head Shaft RPM (12T) | Picker Wheel RPM (12T&36T) | Feed Chain RPM (pick 45T) | Feed Chain RPM (aircup 27T) | Return Chain RPM (26T) | Hyd. Motor RPM (18T) | Hydraulic Oil Flow (Gal/min) | Max Hyd. Motor HP | Max Hyd. Motor Torque (ft-lb) |
| 5.0 | 158.40 | 52.80 | 14.08 | 23.47 | 24.37 | 140.80 | 8.84 | 13.92 | 519.33 |
| 5.5 | 144.00 | 48.000 | 12.80 | 21.33 | 22.15 | 128.00 | 8.03 | 12.66 | 519.33 |
| 6.0 | 132.00 | 44.00 | 11.73 | 19.56 | 20.31 | 117.33 | 7.37 | 11.60 | 519.33 |
| 6.5 | 121.85 | 40.62 | 10.83 | 18.05 | 18.75 | 108.31 | 6.80 | 10.71 | 519.33 |
| 7.0 | 113.14 | 37.71 | 10.06 | 16.76 | 17.41 | 100.57 | 6.31 | 9.94 | 519.33 |
| 7.5 | 105.60 | 35.20 | 9.39 | 15.64 | 16.25 | 93.87 | 5.89 | 9.28 | 519.33 |
| 8.0 | 99.00 | 33.00 | 8.80 | 14.67 | 15.23 | 88.00 | 5.52 | 8.70 | 519.33 |
| 8.5 | 93.18 | 31.06 | 8.28 | 13.80 | 14.33 | 82.82 | 5.20 | 8.19 | 519.33 |
| 9.0 | 88.00 | 29.33 | 7.82 | 13.04 | 13.54 | 78.22 | 4.91 | 7.73 | 519.33 |
| 9.5 | 83.37 | 27.79 | 7.41 | 12.35 | 12.83 | 74.11 | 4.65 | 7.33 | 519.33 |
| 10.0 | 79.20 | 26.40 | 7.04 | 11.73 | 12.18 | 70.40 | 4.42 | 6.96 | 519.33 |
| 10.5 | 75.43 | 25.14 | 6.70 | 11.17 | 11.60 | 67.05 | 4.21 | 6.63 | 519.33 |
| 11.0 | 72.00 | 24.00 | 6.40 | 10.67 | 11.08 | 64.00 | 4.02 | 6.33 | 519.33 |
| 11.5 | 68.87 | 22.96 | 6.12 | 10.20 | 10.60 | 61.22 | 3.84 | 6.05 | 519.33 |
| 12.0 | 66.00 | 22.00 | 5.87 | 9.78 | 10.15 | 58.67 | 3.68 | 5.80 | 519.33 |
| 12.5 | 63.36 | 21.12 | 5.63 | 9.39 | 9.75 | 56.32 | 3.54 | 5.57 | 519.33 |
| 13.0 | 60.92 | 20.31 | 5.42 | 9.03 | 9.37 | 54.15 | 3.40 | 5.35 | 519.33 |
| 13.5 | 58.67 | 19.56 | 5.21 | 8.69 | 9.03 | 52.15 | 3.27 | 5.16 | 519.33 |
| 14.0 | 56.57 | 18.86 | 5.03 | 8.38 | 8.70 | 50.29 | 3.16 | 4.97 | 519.33 |
| 14.5 | 54.62 | 18.21 | 4.86 | 8.09 | 8.40 | 48.55 | 3.05 | 4.80 | 519.33 |
| 15.0 | 52.80 | 17.60 | 4.69 | 7.82 | 8.12 | 46.93 | 2.95 | 4.64 | 519.33 |
| 15.5 | 51.10 | 17.03 | 4.54 | 7.57 | 7.86 | 45.42 | 2.85 | 4.49 | 519.33 |
| 16.0 | 49.50 | 16.50 | 4.40 | 7.33 | 7.62 | 44.00 | 2.76 | 4.35 | 519.33 |
| 16.5 | 48.00 | 16.00 | 4.27 | 7.11 | 7.38 | 42.67 | 2.68 | 4.22 | 519.33 |
| 17.0 | 46.59 | 15.53 | 4.14 | 6.90 | 7.17 | 41.41 | 2.60 | 4.09 | 519.33 |
| 17.5 | 45.26 | 15.09 | 4.02 | 6.70 | 6.96 | 40.23 | 2.53 | 3.98 | 519.33 |
| 18.0 | 44.00 | 14.67 | 3.91 | 6.52 | 6.77 | 39.11 | 2.46 | 3.87 | 519.33 |
| 18.5 | 42.81 | 14.27 | 3.81 | 6.34 | 6.59 | 38.05 | 2.39 | 3.76 | 519.33 |
| 19.0 | 41.68 | 13.89 | 3.71 | 6.18 | 6.41 | 37.05 | 2.33 | 3.66 | 519.33 |
Quick Planting Speed Calculator
Seed Spacing:(in) 10
| Results: | |
| Maximum Planting Speed for Lockwood Airecup Planter:(mph) | 5.68 |
| Maximum Planting Speed for Lockwood Pick Type Planter:(mph) | 4.75 |
| Minumum Planting Speed for Lockwood Pick Type Planter:(mph) | 3.41 |
*Pick wheel on Airecup should not exceed 30 RPM
*Pick wheel on Pick Type should rotate between 18 and 25 RPM
Equations used:
Airecup:
Spacing X 0.568 = Max. MPH @ 30RPM
Pick Type:
Spacing X 0.475 = Max. MPH @ 25RPM
Spacing X 0.341 = Min. MPH @ 18RPM