Rice Lake TradeRoute HL Series - Low Profile Installation and Setup for Models from 2011 and Older 128406 User Manual
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6. Weight and Balance
The objective of the weight and balance calculation is to determine the truck’s resulting
axle weights when the system is installed. It is important that the allowable axle weight
limits of the truck and allowable road limits are not exceeded.
A worksheet outlining the calculation is shown on the following page.
1. Measure the wheelbase of the truck. This is the distance from the front axle to the
center of the rear axle group.
2. Obtain the initial axle weights of the truck without the container (delivery body).
3. Allow a minimum clearance of 2” from any part of the scale (scale frame, tanks,
etc.) to any fixed obstruction on the truck (cab, exhaust stacks, etc.). This is
required for proper scale operation.
4. Estimate the center of gravity of the container or delivery body. The center of
gravity can usually be estimated as the center of the container.
5. Select a starting position for the body or container on the truck frame. The
container center of gravity must be ahead of the rear axle group.
6. Assuming the starting position as previously described determine the forward
distance (FD) from the center of the rear axle group ahead to the body's center of
gravity. This dimension can be calculated or measured with a tape measure.
7. Determine the total weight of components being installed on the truck.
8. Determine final axle weights using the equations below the worksheet.
If one of the axle weights is greater than the allowable limit for the truck or
roads. Shift the body forward (to lower the rear axle weight) or backward
(to lower the front axle weight), keeping in mind points 3, 5 and 6 above.
9. Extend the truck frame if required. If the weigh module hangs past the end of the
truck frame, the truck frame must be extended. The truck frame must be at least
even with the end of the weigh module. It is recommended that the truck frame
extend a minimum of 1” past the weigh module.
10. It is preferred that the rear bumper be mounted directly to the truck frame.