The forklift's turning radius is also called the turning circle, that is vital information for the operator to have. It gives the driver the knowledge of how much space is required to turn the forklift around. For instance, a tighter turning radius allows the machine to successfully function in tight places and congested areas, thus improving the forklift's maneuverability. Operators who are not aware of this measurement may cause damage to the machinery or to the property.
Make the necessary steering geometry alignment corrections before testing the turning radius. The test should begin with an operator trainer assisting inside the cab where they can help to control the equipment's functions. Another person on the ground utilizes a hose or a spray bottle to wet the outside and inside of the unit's wheels. After that, drive the machinery in a complete circle with the wheels turned to the maximum angle. Repeat the process once and if necessary, continue to wet the wheels.
When this measurement test has been accomplished, measure the watermarks left by the tires utilizing a tape measure, 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 the circle's one side to the opposite side of the circle. The inside turning diameter can 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 establish the turning radius. Be certain 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 completed, the next step is to locate the point on the pavement directly below. This point to the turning center indicates the machine clearance radius. As a rule, wall-to-wall turning diameter is two times the machinery clearance radius.