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 = 36 | ZA1 = 9 |
| Driven gear | ZG2 = 32 | ZA2 = 35 |
| Calculations: | |||
| iG | = | 32 : 36 = 0.889 | |
| iA | = | 35 : 9 = 3.889 | |
| iov | = | 0.889 x 3.889 = 3.457 | |
