The forklift's turning radius is also referred to as the turning circle, which is vital information for the driver to have. It gives the driver the knowledge of how much space is required to turn the forklift around. Like for example, a tighter turning radius allows the machinery to operate successfully in tight places and congested areas, therefore enhancing the forklift's maneuverability. Drivers who do not know this measurement could cause damage to the machinery or to the property.
Make the necessary steering geometry alignment corrections before testing the turning radius. The test must begin with an operator trainer assisting inside the cab where they can assist to control the equipment's functions. A second person on the ground uses a spray bottle or a hose to wet the inside and outside of the unit's wheels. Next, drive the equipment in a complete circle with the wheels turned to the maximum angle. Repeat the process once and continue if necessary to wet the wheels.
When this measurement test has been done, measure the watermarks left by the tires utilizing a tape measure, from the tire mark's midpoint to a similar point across the circle's diameter. For the outside turning diameter, measure the watermark left by the outside 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 interior tires. Then, divide these numbers in 2 to be able to determine the turning radius. Be sure to note that the turning center is the midpoint of the diameter of the circle.
In order to determine the wall-to-wall turning diameter, drop a plumb line from the extreme outside radial extension on the machinery. After this is accomplished, the next step is to find the point on the pavement directly below. This point to the turning center indicates the vehicle clearance radius. As a rule, wall-to-wall turning diameter is twice the clearance radius of the vehicle.