Stinger Steered Loggers

Stinger-steered log trailers consist of a tractor with a log bunk mounted over the fifth wheel. This log bunk is capable of rotating on the fifth wheel, typically over bogie. A second set of bunks is mounted on a pair of axles constituting the trailer and is capable of rotation as well. The tractor has a bar extending from the back, called a reach, with a pintle hitch. 

The rear bunks have a steel bar, called a stinger, that consists of a telescoping bar so that the distance between the tractor and trailer can change as needed. This is referred to as the compensator. The stinger attaches to the reach to complete the trailer configuration. Air and electrical lines are long to reach back to the trailer.

The advantage of a stinger-steer is that the trailer wheels follow the path of the tractor wheels when going around corners. This permits operation on roads with tight corners. Some pole trucks utilize a similar vehicle/trailer configuration.

This is a very unique setup. The location of the bunk on the tractor is optimized to put the least amount of stress on the vehicle. In the case of loggers, the trailer portion is lifted onto the tractor when there is no load. The headache rack, or batwing, supports the stinger protrusion while in the stored position.

There are many different styles of logging trucks. Make certain you understand which style your customer requires prior to specifying the vehicle.