bobbyg123 wrote:
This sounds like a fantastic product. The W/D concept makes sense to me, but I'm still not clear about how the anti-sway works. If this product works as advertised, I'm going to give it a shot.
How the anti-sway works: take one hand and grip your other wrist. Try to turn your wrist. Now slide your hand a little ways up your arm, but keep the hand's diameter the same, and try again to turn your arm. It's harder.
That's how the Andersen works. The hitch ball and shaft are a solid piece of metal. The shaft has a bit of a taper to it, so it gets larger toward the ball end. It fits into a socket lined with grippy brake material. As the weight of the tongue pushes down on the ball, it wedges that tapered shaft down into the brake material in the socket, which makes the shaft hard to turn. The chains force the shaft to turn right along with the trailer; the trailer does not pivot on the ball, rather the trailer, ball and shaft move as one.