Such trailers are unknowen in Germany / Europe and I don't understand, how to lift up / take down the neck?! There is no hydraulic system on the trailer. The discription say's somethig about a winch on the truck. So I think, the neck will be lift by a hook and a steel rope? Sorry, I've never seen such a trailer in action. And whats about the kingpin, when the neck is lying on the ground? Will it slide up? Because it's not possible, to take it on the ground - it will be demaged!
Is there someone, who had have some experiences with such a trailer or can answer me?
Well, I found some of those trailers with a hydraulic system. I think, that would be easier to built. The locking of the neck itself, I think, will work by air locks. That's what I found out on serval discriptions of the manufacturer.
This video shows how to break down a mechanical gooseneck. It's by XL trailers. When I pulled goosenecks, I pulled XL and Talbert trailers. All the ones I pulled were mechanical. We only had one hygraulic. The process was fairly quick, it just required jumping in and out of the truck a few times. Note the ramps at the end of the tractor frame. They are designed for the rollers on the trailer's nose. Hopefully this will help you.