A common job for vehicle motorists is to glide the tandem axle group along the trailer to readjust the weight on different axle groups. Understanding which method to move the axles can be confusing.
The tandem axle teams on most trailers can be moved forward and backward along the size of the trailer. Vehicle chauffeurs wish to be able to put the axles where the weight is finest dispersed, but some guidelines differ country-wise on how far back the trailer tandems can be moved. This is called the trailer wheelbase or authority to back axle/tandems range and describes the distance in between the kingpin on the trailer as well as the axle team.
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What does it matter?
Governments set regulations on where to set the tandems to keep the wheelbase of the truck-trailer mix smaller. The longer the trailer wheelbase, the less maneuverable the truck-trailer combination, and the aesthetics the truck will run over.
Vehicle drivers want to be able to set their wheelbases whenever they desire. If there is a load that is not distributed equally in the trailer, the truck axles can be overweight, even though the entire vehicle is not overweight. In this case, the tandems must be pushed ahead so more weight would be put on the trailer axles.
Care: Guidelines are governing how much back tandems can be positioned. Click here to see what the regulations are where you will be traveling.
How far should you move the axles?
A great guideline is that a hole on the trailer equates to 250 to 300 pounds being relocated from the truck to trailer, or the other way around.
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