A4 Mk2
|
| Transmission ratio | = | No. of teeth on driven gear | : | No. of teeth on drive gear |
| Ratios | Formula | ||
| iG | = | Gear ratio | ZG2 : ZG1 |
| iA | = | Axle ratio | ZA2 : ZA1 |
| iov | = | Overall ratio | iG x iA |
| Example: | ||
| 5th gear | Final drive | |
| Drive gear | ZG1 = 40 | ZA1 = 8 |
| Driven gear | ZG2 = 24 | ZA2 = 31 |
| Calculations: | |||
| iG | = | 24 : 40 = 0.600 | |
| iA | = | 31 : 8 = 3.875 | |
| iov | = | (24 : 40) x (31 : 8) = 0.600 x 3.875 = 2.325 | |
