7 to 1 Gear Reduction units
Sorry, no longer available
(Now in development a more compact & sealed 3:1 unit)
Clodbuster
ALU-CB35 $65.00 ea. (2 needed for a Clodbuster)
Allows motor pinion range from 8 tooth to over 20 tooth.
The output shaft pinion can also change from 8 tooth to 16 tooth.
Overall gear ratios can range from under 54:1 to 270:1 or more!
This unique unit also allows the motor position to be rotated in relation to the gear box.
This allows greater flexibility & usage with stock or after market chassis.
Gear Reduction chart for Clodbuster:
ß Motor Pinion Output Shaft Pinion Þ
| Ratios | 8 tooth | 9 tooth | 10 tooth | 11 tooth | 12 tooth | 13 tooth | 14 tooth | 15 tooth | 16 tooth |
| 8 tooth | 268.90:1 | 239.03:1 | 215.10:1 | 195.58:1 | 179.25:1 | 165.44:1 | 153.67:1 | 143.39:1 | 134.42:1 |
| 9 tooth | 239.07:1 | 212.52:1 | 191.25:1 | 173.89:1 | 159.37:1 | 147.09:1 | 136.63:1 | 127.48:1 | 119.51:1 |
| 10 tooth | 215.12:1 | 191.22:1 | 172.08:1 | 156.46:1 | 143.40:1 | 132.35:1 | 122.94:1 | 114.71:1 | 107.54:1 |
| 11 tooth | 195.56:1 | 173.84:1 | 156.44:1 | 142.24:1 | 130.36:1 | 120.32:1 | 111.76:1 | 104.28:1 | 97.76:1 |
| 12 tooth | 179.43:1 | 159.50:1 | 143.53:1 | 130.29:1 | 119.61:1 | 110.39:1 | 102.54:1 | 95.68:1 | 89.69:1 |
| 13 tooth | 165.25:1 | 146.89:1 | 132.19:1 | 120.19:1 | 110.15:1 | 101.67:1 | 94.44:1 | 88.12:1 | 82.61:1 |
| 14 tooth | 153.51:1 | 136.36:1 | 122.81:1 | 111.66:1 | 102.33:1 | 94.45:1 | 87.73:1 | 81.86:1 | 76.74:1 |
| 15 tooth | 143.28:1 | 127.34:1 | 114.59:1 | 104.19:1 | 95.49:1 | 88.13:1 | 81.86:1 | 76.39:1 | 71.61:1 |
| 16 tooth | 134.45:1 | 119.51:1 | 107.55:1 | 97.79:1 | 89.62:1 | 82.72:1 | 76.84:1 | 71.69:1 | 67.21:1 |
| 17 tooth | 126.63:1 | 112.56:1 | 101.29:1 | 92.10:1 | 84.41:1 | 77.91:1 | 72.36:1 | 67.52:1 | 63.30:1 |
| 18 tooth | 119.29:1 | 106.04:1 | 95.43:1 | 86.77:1 | 79.52:1 | 73.40:1 | 68.17:1 | 63.61:1 | 59.63:1 |
| 19 tooth | 113.42:1 | 100.83:1 | 90.74:1 | 82.50:1 | 75.61:1 | 69.79:1 | 64.82:1 | 60.48:1 | 56.70:1 |
| 20 tooth | 107.56:1 | 95.61:1 | 86.04:1 | 78.23:1 | 71.70:1 | 66.18:1 | 61.47:1 | 57.35:1 | 53.77:1 |