Good and Bad about Blue Ox Sway Pro

BarneyS wrote:
I fail to see how the chains can supply much,if any, sway control at all since the brackets pivot right along with the a frame and bars in a sway event and in a turn. The bars DO move forward and back but are not rigid side to side, which would be necessary for sway control to take place.
Barney

When the trailer is not in line with the tow vehicle, the bars have an unequal force applied to them. That unequal force is applied ( if I am understanding it correctly ) because of the fact the head of the hitch is tilted backwards at it's top.
As proof of this, when I am cranking up the chains on this hitch, if I don't have the truck exactly straight in line with the trailer, one bar will "chain up easily" while the other bar is very difficult to get the latch to turn. In that case, I have to crank up the tongue jack some more to get enough weight "off the bars".

It's that unequal force, created by the geometry of the hitch head, bars, and attaching chains that is apparently the force the keeps the trailer inline when it tries to sway.

At least that's my take on it. All I know is it works. And the weight distributing part works as well, a fact I verified by setting mine up and going to the CAT scale.