A model of an Elphinstone Easysteer PBS Payloader with self steering suspension. As with all my models it is in scale 1:17,5. It features PF, lights, remotely operated landing gear with parking break, remotely operated steering lock to enable easy reversing and solid axle suspension on all axles.
About this creation
It is not the first time I build a model of a trailer engineered and build by the Elphinstone company. Ever since I build the Elphinstone Easyloader Road Train I am attracted to what these guys have produced and to what they will come up with.
Building LEGO models of there real life trailers is much fun. Trying to make the models work as realistic as can be is really what I'm up to. Of course I have build and will build trailers from other manufacturers as well, but I'm sure there are more Elphinstone trailers for me to build.
As one can tell I did re-use some details I created for the Easyloader. For example the U shaped log holders, the cab- and rearguard as well as the mudguards. From a technical/mechanical point of view only the axles and suspension are re-used, but that is about it. The red chassis beams are straight forward so to speak. What was really challenging is the self steering suspension.
To increase playability I reduced the trailers length to the absolute minimum. All functions are as with most of my models mounted in between the chassis beams. With all this in place the length of the trailer was established. The length of this model is 92 studs and that equals about 12,8 meters (505") in real life. According to the Elphinstone brochure the maximum length is 16,5 meters (650").
Some of my trailer models has there own power supply. A battery box mounted somewhere to make this trailer act as a stand alone model. This Easysteer trailer, like the Easyloader, hasn't got it's own power supply. It needs to be hooked up to the trucks battery box to be operational. So this trailer can be called a slave model.
What makes this Easysteer trailer unique is that it can be build as a stand alone model as well. For this the trailers lengths needs to be increased by at least 10 studs. Some may have read this already but I have plans on creating instructions on some of my models. If it ever happens I will make instructions for both slave and stand alone model.
It is (almost) impossible to back this baby up so the engineers at the Elphinstone company came up with a locking mechanism. This mechanism locks the self steering suspension of the trailer so the axles are fixed. With this the driver is able to back the trailer up without the self steering suspension.
I have absolutely no idea how that is achieved in real life, but I came up with a very effective mechanism. With a PF M motor that powers a mini Technic Linear Actuator the lock is enabled or disabled. It locks the rear part that holds the axles so it is and stays aligned with the trailer.
One heck of a trailer! I still wish you would at least take pictues of the suspension on your MOCs. Mabey next time, you should take some work in progress (WIP) photos of the MOC you are doing next and post them on the page for it. I think everybody would like to see them.