Equipment Type

Booster Axle Puts 24.5 Tons In the Box

Jeff Sutton's Sutton Trucking needed a truck suited to four different sets of weight rules: federal Interstate limits, state restrictions in Missouri and Kansas...

May 01, 2005

Kenworth
Six axles that span 35½ feet with the booster deliver a straight truck that's Interstate legal at 75,500-pounds GVW.

Jeff Sutton's Sutton Trucking needed a truck suited to four different sets of weight rules: federal Interstate limits, state restrictions in Missouri and Kansas, and municipal laws for the commercial zone in a 50-mile radius around Kansas City.

Maximum weight allowed in the commercial zone is 22,400 pounds on any single axle and 36,000 pounds on a tandem. On Interstates, trucks are restricted to 20,000 pounds on any single axle and 34,000 pounds on a tandem. Allowable gross depends on the distance from the first to last axle.

Their solution is a Kenworth W900S Super 16 dump truck with six axles: a set-forward steer, two steerable pushers, tandem drives, and a booster axle that swings down from the rear on hydraulic arms. The outer bridge is 35 feet 6 inches, which can carry 75,500 pounds GVW.

The booster axle bears up to 13,000 pounds and cantilevers weight onto the steer axle.

"The Super 16 lets us scale almost 24½ tons of payload," Sutton says. "It basically does the same job as a tractor hauling a 40-foot frameless end-dump trailer, which scales at a little more than 25 tons of payload. Yet it's more maneuverable and costs less to insure.

"When you show up on a job hauling six or seven more tons than the trucks other guys are using," Sutton adds, "that's what makes customers happy and keeps them calling back."

More like this

Comments on: "Booster Axle Puts 24.5 Tons In the Box"

Overlay Init