Lucy:
Carryfast:
A proper rear steer means that all the trailer axles counter steer to reduce cut in.No, it doesn’t. It’s called a “rear steer” because it’s just the rear axle steering.
Trailers where all the axles turn are described as “positive steer”.(Source for last bit - Rikki from here. He pulls 6-axle versions.)
Positive steer used to describe an axle which is doing nothing more than supporting and tracking a long overhang behind two fixed axles to reduce cut in at the expense of tail sweep.
As opposed to an all steering ( rear steer ) bogie which can actually create less cut in from a much longer trailer and distance from pin to axles measurement than than that.
Unless I’ve missed something.