| Modèle | Temps de descente |
|---|---|
| IT62H | 2.6 sec. |
| IT62G | 2.8 sec. |
| IT38H | 2.7 sec. |
| IT38G | 2.9 sec. |
| IT28G | 2.8 sec. |
| IT28B | 3.6 sec. |
| IT18B | 3.6 sec. |
| IT14G | 3.1 sec. |
| IT14B | 3 sec. |
| IT12B | 3 sec. |
| 930H | 2.8 sec. |
| 930G | 2.8 sec. |
| 924H | 2.4 sec. |
| 924G à fourche | 2.4 sec. |
| 924G | 2.4 sec. |
| 904B | 3.2 sec. |