
Shaft Support Placement
Anytime more than two universal joints are used in a system, a shaft support is required to prevent the shafts from looping. In a system with 3u-joints, one support is required. For each additional u-joint, an additional support will be needed. In a 3 joint system it is best to locate the shaft support as close to the center u-joint as possible. If one of the shafts is significantly longer than the other, it is best to locate the support on the longer shaft.