Thanks for the analysis and my last comment...what if the ball does bang back
and forth inside the coupler...then does the chain plate at the bottom of the ball
shank then get bangs around?
Does it then deform the hole and/or the shank?
Since your analysis says the likelyhood of the ball banging around the coupler
is slight in relation to the acceleration numbers...this is a moot point
Have a P3 and my brake pedal light switch makes about 1/64"-1/32" before the
MC rod is moved. Set my P3 to skid the trailer tires at approx 25 MPH on dry
pavement.
Your comments settles or at least alleviates my concerns on the possible movement
of the ball within the coupler, but am still not comfortable with the WD forces
on the coupler latch/pawl.