ON THE UNIVERSAL JOINT (PART. 3)

The ordinary universal joint has a rectangular cross. But when the cross-arms are not at right angles to each other, the angular velocity ratio between two shafts and the torque and bending moment of each shaft are different from the case of the ordinary joint. Namely, the joint which has a non-rectangular cross will have worse conditions than the ordinary joint. In this paper the comparisons of the load applied to the cross-pin and the mechanical efficiency for two joints are described, and we could see that, when the joint did not have a rectangular cross, the load was greater and mechanical efficiency was smaller than the ordinary joint