What is the optimal fleet angle for rigging?
2 min read
Asked by: Kimberly Johnson
Ideally, the fleet angle should be between 0.25 and 1.25 degrees. This is not an absolute rule of physics; it depends on the rope construction.
What is a fleet angle compensator?
The fleet angle compensator is a floating sheave arrangement on an eccentric oscillating shaft. It is supported by two pillow blocks and has no direct contact to the drum except for the cable itself. This device does not spool the cable – it only compensates for a bad fleet angle (hence the name).
What should be the degree of fleet angle?
Ideally, the fleet angle should be between 0.25 and 1.25 degrees. This is not an absolute rule of physics; it depends on the rope construction.
What is a fleet angle rigging?
The fleet angle of a hoist is the angle at which the cable meets a grooved cylinder. In manual rigging, the grooved cylinder is the head block or loft blocks. In motorized rigging, the grooved cylinder is the drum.
What is the fleet angle of a winch?
The angle between the center line through the lead sheave and the centerline of the rope leading to the drum is called the fleet angle.
How do you calculate fleet angle?
Calculating Fleet Angle
As a general “rule of thumb”, the absolute minimum distance from the winch to a fixed sheave should be equal in feet to the drum length in inches. For example, a 12″ wide drum requires a fixed sheave at least 12′ feet away for proper spooling.
