The hatchet “tandem truck” covers a wide variety of three-axled vehicles -- one axle in front, 2 in the rear -- native a dump van to the tractor that pulls a semi-trailer. Tandem trucks have actually been around since 1926, as soon as they were occurred by the Hendrickson engine Co. Come both increase a truck’s load-bearing capacity and to smooth the end the ride on bumpy roads and at building sites.

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any type of truck with a twin axle in the ago is taken into consideration a tandem truck. Both axles are usually journey axles -- castle propel the vehicle. Numerous have 2 wheels top top each finish of each axle. The tandem axles allow the truck to lug much much more weight, they administer stability and also a smoother ride, and they provide better traction ~ above slippery surfaces. Plenty of dump trucks room tandem trucks, together are plenty of firetrucks, fuel and also water trucks and also trucks equipped with cranes.


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A semi-trailer has actually either one or 2 axles at the behind -- those through two are dubbed tandem trailers -- and also a kingpin in ~ the front that connects to the 5th wheel, or hitch, top top the back of the tractor that pulls it. If the tractor has actually two rear axles, that is likewise a tandem truck.


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though sometimes perplexed with “tandem truck,” the hatchet “double bottom truck” describes a tractor that is pulling both a semi-trailer and a complete trailer -- one with axles and also wheels top top both front and back.

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van designer Magnus Hendrickson and also his sons Robert and George designed the very first tandem truck suspension in Chicago in 1926, just four years after blow up tires first replaced solid rubber tires top top trucks. The Hendricksons supplied a metal beam linked to every axle through a pivot, a architecture that spread the fill evenly and also reduced the results of uneven terrain. In 1933, the international Harvester Co. Signed a contract v the Hendrickson engine Co. Granting IH exclusive use of the tandem suspension. IH held the exclusive right to the tandem design until 1948, when it agreed to let Hendrickson sell the suspensions to every truck manufacturers. Hendrickson continues to manufacture the tandem suspensions together of 2011.


Dave Hendrickson has actually been writing and editing professionally since 1980. He has actually received awards from the Milwaukee press Club, Virginia press Association and Investigative Reporters and also Editors. Hendrickson holds a Bachelor of arts in journalism native the college of Wisconsin and a grasp of fine Arts in creative writing from Virginia commonwealth University.