Ridgerunner29 wrote:
As a result of this thread, I discussed the above theory of additional stresses caused by a Propride hitch with Sean at Propride today.
First Sean said that industry professionals are not allowed to post to this forum. So he can not directly dispute this theory of horizontal stress.
He told me that sway forces exerted on the receiver from a conventional hitch are many times greater than any forces ever exerted by either a Propride or Hensley Arrow.
With a "conventional" hitch, sway happens because the ball coupler is free to pivot on the ball. IOW, there is no yaw-axis torque transmitted between TV and TT.
With a four-bar-linkage hitch, it is claimed that sway cannot happen because the ball coupler cannot pivot on the ball and the TV and TT effectively are "locked" together.
In order for the TV and TT to be "locked" together, the "locking" mechanism (which is the four-bar-linkage) must to able to transmit a significant amount of yaw-axis torque between TV and TT.
The path for that torque transmission includes the TV's receiver.
I would vote for the Administrator to allow Sean Woodruff to post his explanation of how the "sway forces exerted on the receiver from a conventional hitch are many times greater than any forces ever exerted by either a Propride or Hensley Arrow."
Ron