Calculation of transmission ratios "i"
WARNING: This page is about a different car, the 2004 Audi A4, 2003 Audi A4, and 2002 Audi A4. However, it is still accessible from the selected car via links, so may be relevant.
Transmission ratio
| Transmission ratio |
= |
No. of teeth on driven gear |
: |
No. of teeth on driving gear |
| Transmission ratios |
Formula |
| iG |
= |
gear ratio |
ZG2 : ZG1 |
| iA |
= |
final drive ratio |
ZA2 : ZA1 |
| i total |
= |
overall gear ratio |
iG x iA |
| Example: |
|
| |
5th gear |
Final drive |
| Driving gear |
ZG1 = 36 |
ZA1 = 9 |
| Driven gear |
ZG2 = 32 |
ZA2 = 35 |
| Calculations: |
|
| iG |
= |
32 : 36 = 0.889 |
|
| iA |
= |
35 : 9 = 3.889 |
|
| i total |
= |
0.889 x 3.889 = 3.457 |