The turning radius on a lift truck is also known as the turning circle. This information is vital for a machinery operator to have. It gives the operator the knowledge of how much space is needed to turn the forklift around. For example, a tighter turning radius allows the equipment to work successfully in restricted places and crowded areas, therefore improving the maneuverability of the forklift. Drivers who are not aware of this measurement can cause damage to the property or to the machine.
Make the necessary steering geometry alignment corrections prior to testing the turning radius. The test must begin with an operator trainer assisting in the cab where they could assist to control the machine's functions. A second person on the ground uses a hose or a spray bottle to wet the outside and inside of the unit's wheels. Next, drive the machine in a complete circle with the wheels turned to the maximum angle. Repeat the procedure once and if necessary, continue to wet the wheels.
Measure the watermarks left by the tires using a tape measure once your measurement test has been done. The watermark test begins from the midpoint of the tire mark to a similar point across the diameter of the circle. For the outside turning diameter, measure the watermark left by the exterior tires from one side of the circle to the circle's opposite side. The inside turning diameter could be determined by stretching the tape measure across the circle left by the inner tires. After that, divide these numbers in 2 in order to determine the turning radius. Be certain to note that the turning center is the midpoint of the diameter of the circle.
Drop a plumb line from the extreme outside radial extension on the vehicle in order to determine the wall-to-wall turning diameter. When this is completed, next find the point on the pavement directly beneath. This point to the turning center indicates the machinery clearance radius. As a rule, wall-to-wall turning diameter is twice the clearance radius of the machinery.