Here is one of the newer threads on this Hitch System in hopes folks will post
on this thread to keep the continuity going
First tow with Anderen hitch & 9,000+ lbs TTBenK wrote:
tim and amy wrote:
snip...
Towing to the coast I felt a lot of pull "back" from the trailer. Meaning in the dips the truck felt like it was being pulled backards on the rise.
Suspect that 'pulling back' is something most all users of this system
will encounter
As that is the way it works...you are pulling the trailer via the chain
and bushings.
The coupler 'front' does NOT contact the ball. So when you accelerate
the system compresses the bushing to have the ball leave contact of
the coupler latch (behind).
When the trailer 'catches up', the ball will be pulled 'back' into the
latch
Suggest you folks keep anything to do with this Anderson system on
the original thread. Otherwise, there will be many, many separate
threads to have it disassociated with the original. Okay if it has
been on the market a loooooooong time, but since fairly new, think
it would benefit all if consolidated on one thread.
Here is the original thread and the diagram that might help you understand
that 'back' feeling...if you haven't already read that thread. Will
also post this thread over there trying to keep the continuity
New Andersen WD Hitch, 29 pages to date
BenK wrote:
This is a quick and dirty vector diagram of how I see it working

Even if there is NOT slop (tolerance) in the coupler to ball...there will be over
time.
Then the wear of the friction material will allow the tapered shank to tilt
back and forth over time.
So in pulling the chain, it pushes the tongue against the ball via
where I say the pawl is. That then creates the same lever arm most
all other WD systems look like.
Then the TV pulls and the ball wants to go towards the coupler front
(away from the pawl). Then does the ball bang back and forth inside
the coupler?
{edit}...ops...put the bushing on the wrong side of the tongue bracket, but
think you guys know what I meant.
It is really difficult to see how it truly works without detailed
cross section diagrams or exploded assembly diagram
Go Brady !!!...home town kid just up the street from me