In examining the drive line, it would be well to start
with a review of drive shaft operation. A critical
examination of why it is there and what it must do may
be helpful in analyzing its effect on the entire drive line
system. A driveshafts functions can be briefly described
It must transmit torque from the transmission to the
axle. This requirement makes it necessary that the
driveshaft be capable of transmitting the maximum
low gear torque developed by the engine and
transmission ratio and any shock loads which may
develop. It must also be capable of rotating at the
maximum speed required for vehicle operation. This
speed is often engine speed increased by an
overdrive ratio in the transmission.
The driveshaft must operate through constantly
changing relative angles between transmission
driveshaft and axle.
The length of the driveshaft must be capable of
changing while transmitting torque. Length changes
are caused by necessary axle movement due to
torque reaction, road deflections, braking loads, etc.
CTS-4017 - Page 4
PRINTED IN UNITED STATES OF AMERICA
Fig. 1 Typical Parts Identification