The forklift's turning radius is also known as the turning circle, that is essential information for the operator to have. It gives the driver the information of how much space is required to turn the lift truck around. Like for instance, a tighter turning radius enables the equipment to successfully operate in tight places and crowded areas, therefore enhancing the maneuverability of the forklift. Operators who are not aware of this measurement can cause damage to the machinery or to the property.
Make the necessary steering geometry alignment corrections before testing the turning radius. The test must start with an operator trainer helping inside the cab where they can help to control the equipment's functions. A second individual on the ground utilizes a hose or a spray bottle to wet the outside and inside of the unit's wheels. Next, drive the machinery in a whole circle with the wheels turned to the maximum angle. Repeat the process once and continue if necessary to wet the wheels.
After this measurement test has been done, measure the watermarks left by the tires with a tape measure, from the tire mark's midpoint to a similar point across the diameter of the circle. 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 established by stretching the tape measure across the circle left by the interior tires. Then, divide these numbers in 2 to be able to establish the turning radius. Be sure 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 accomplished, next find the point on the pavement directly underneath. This point to the turning center indicates the vehicle clearance radius. As a rule, wall-to-wall turning diameter is twice the machinery clearance radius.