Double Drop RGN or Removable Gooseneck Trailer
The name for a Double Drop RGN or removable gooseneck is derived from its appearance of having the look of a goose’s neck. These trailer types are synonomous with the term double drop trailer or lowboy trailer, although not all double drops have a removable gooseneck. A double drop has a drop in the front of the trailer and a drop in the rear of the trailer just in front of the tandem axles. This allows for a very low deck height allowing to take loads up to 12′ high legally. A fixed-neck trailer allows this trailer type to be loaded only from the either the side with a forklift or with a crane from overhead for example. On the other hand, a Double Drop RGN trailer allows for the front attachment to the trailer to be removed with the tractor providing a ramp onto the bottom deck. This feature allows for equipment that operates under its own power or on wheels that can be pushed or pulled to be driven onto the trailer via ramps. Once loaded the tractor backs up to the trailer and the RGN reattaches itself to the rest of the trailer. RGN trailers are therefore most often used to haul large construction equipment. The RGN trailers can have a mechanical vs hydraulic system, the first being cheaper and lighter weight and the latter having more weight and expense, but easier to use. RGN trailer’s can also come in a variety of lengths, axle configurations, and you may also see double drop trailer hauling oversize machines or buildings that require the height requirement of a double drop but not necessarily the RGN for loading purposes.
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