James Bender |
Zero-Throw Casters |
Most commonly, technicians see fixed and swivel casters as the only alternatives for rolling a platform across the stage. Even the more versatile of these, the swivel caster, has limitations when a change of direction is required. In reversing directions, the swivel caster tends to pivot around its point of contact with the floor, causing a familiar and unwelcome lurch.
The problem is avoidable, however. The solution lies in the use of the zero-throw caster, which allows a platform to move easily in any direction without the “throw” of the standard swivel caster. See Figures 1A through 1C.
FIGURE 1: THE Z
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