List three techniques used by manufacturers to balance the drive shaft and reduce the effects of vibrations and the resulting noises.
What will be an ideal response?
Techniques used by manufacturers to balance the drive shaft and reduce the effects of vibrations and the resulting noise include:
1) Welding balance weights to the outside diameter of the drive shaft
2) Inserting cardboard liners into the tube, which serve to decrease the shaft's vibration by damping the vibration
3) Placing biscuits (rubber inserts) between the drive shaft and the cardboard liner to reduce noise transfer within the drive shaft
4) Using a tube-in-tube design, in which the input driving yoke has an input shaft that fits inside the hollow drive shaft
5) Using drive shafts made with aluminum tubing or fiber composites
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