Frank I completely agree with 99% of your last post, but I would like to add to elaborate on the following two points:
Quote:
Originally Posted by Frank Lee
It could be somewhat realistic to fit trailers with adjustable height suspensions, if the cost/benefit ratio worked out. Then they could be lowered to some minor extent.
The loading dock is the biggest reason huge stationary tailcones can't be fitted to box trailers. Oh, there are legal length restrictions too. .
|
Actually, Walmart, who does extensive Class 8 testing as most are aware, did it reversely. They built several low-boy van test trailers with smaller rear tires and wheels. They had vertical pneumatic actuators that raised the rear of the trailer to standard dock height to facilitate loading and un-loading.
Also, FMCSA allows up to 60" past the rear of the trailer for rear aerodynamic add-on devices. Although most all sold are 48" in length so they can be stowed behind the open doors, per one of your other points. The units that we will be selling in the spring will be a full 60" and stowable.