A2
|
| 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 = 48 | ZA1 = 17 |
| Driven gear | ZG2 = 39 | ZA2 = 66 |
| Calculations: | |||
| iG | = | 39 : 48 = 0.813 | |
| iA | = | 66 : 17 = 3.882 | |
| iov | = | 0.813 x 3.882 = 3.156 | |
