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 |
|
|
|
|
