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: | ||
| 6th gear | Final drive | |
| Drive gear | ZG1 = 38 | ZA1 = 8 |
| Driven gear | ZG2 = 25 | ZA2 = 30 |
| Calculations: | ||
| iG | = | 25 : 38 = 0.658 |
| iA | = | 30 : 8 = 3.750 |
| iov | = | 0.658 x 3.750 = 2.467 |