Input Bevel Gear and Final Drive Gear
Ratio Choice
To accommodate variations in engine
and vehicle speeds it is necessary to change the overall reduction ratio of the
gearbox. Due to the extremely compact design of the TLS gearbox, it is only
possible to fit certain combinations of input bevel gear ratio and final drive
ratio. The table below shows the available combinations of gear
ratios.
If you have any doubt please contact the Hewland Technical
Department: technical@hewland.com
| Available Input Bevel Gear and Final Drive Gear Ratio
Combinations |
|
|
| Input Bevel Gear Ratio |
Final Drive Gear Ratio |
Combined Reduction Ratio |
| 19/21 |
16/57 |
3.937:1 |
| 19/21 |
16/55 |
3.799:1 |
| 19/21 |
17/55 |
3.575:1 |
| 21/19 |
16/57 |
3.224:1 |
| 21/19 |
16/55 |
3.111:1 |
| 22/19 |
16/57 |
3.078:1 |
| 21/19 |
17/55 |
2.928:1 |
| 22/19 |
18/54 |
2.592:1 |
| 22/19 |
19/55 |
2.501:1 |
| 22/19 |
22/51 |
2.003:1 |
Ratios:
| Tooth Count |
Ratio |
|
Tooth Count |
Ratio |
|
Tooth Count |
Ratio |
| 13/37 |
2.846 |
|
19/30 |
1.579 |
|
21/26 |
1.238 |
| 14/36 |
2.571 |
|
19/29 |
1.526 |
|
24/29 |
1.208 |
| 14/34 |
2.429 |
|
19/28 |
1.474 |
|
22/26 |
1.182 |
| 17/38 |
2.235 |
<Shortest 2nd |
21/30 |
1.429 |
|
25/29 |
1.16 |
| 16/34 |
2.125 |
|
22/31 |
1.409 |
|
23/26 |
1.13 |
| 16/33 |
2.063 |
|
21/29 |
1.381 |
|
25/28 |
1.12 |
| 16/32 |
2 |
|
23/31 |
1.348 |
|
29/32 |
1.103 |
| 18/35 |
1.944 |
|
25/33 |
1.32 |
|
24/26 |
1.083 |
| 17/32 |
1.882 |
|
21/27 |
1.286 |
|
|
|
| 17/31 |
1.824 |
|
21/29 |
1.381 |
|
|
|
| 17/30 |
1.765 |
|
23/31 |
1.348 |
|
|
|
| 18/31 |
1.722 |
|
25/33 |
1.32 |
|
|
|
| 18/30 |
1.667 |
|
21/27 |
1.286 |
|
|
|
| 18/29 |
1.611 |
<Longest 3rd |
23/29 |
1.261 |
|
|
|
|
