Overview
want to know the fastest gearbox? but aint pullin hard enough in 1st gear.i calculated the gearings on the gearboxes for peterbuild trucks.you will find the max speed at 2K rpm for 1st gear and last gear on the right side of the picture. in kmh and mph.
the calculation picture
Er= engine rotations
Wr= wheels rotations
erpm= engine rpm
Wrpm= wheel rpm
LG= last gear
1st gear Er for 1 Wr – last gear Er for 1 Wr – Wrpm at 2K Erpm for 1st gear and last and speed at 2K Erpm.
the calculations
1st gear -multiply- diff= engine rotations needed for 1 wheel rotation .
engine rpm -divide- engine rotations needed for 1 wheel rotation= wheel rotations per minute.
wheel rotations per minute -multiply- 60= xxxxxxx -divide- 316,5809= KMH
KMH -multiply- 0,6214= mph