Hi John,
I'm not sure if you are talking about my post but I was referencing a podcast with Andy Thompson from Can-Am RV. He talks a lot about the history of WD and how they fabricate hitches.
He talks about some of the dynamics of WD and he talks about receivers and why they can fail. The podcast does cost $1.00 for this episode but the content is great and it's about an hour long.
Here is a direct
Link to the podcast.
And I am not associated in any way shape or form with this podcast.
Andy talks about the SAE testing of receivers which lead me to find that the rating for hitching is SAE J684 for up to class 4 trailering.
Admittedly SAE J684 is updated regularly and it cost about $70.00 for a copy of the current version... However, previous versions are available
For free and give us some insight into the criteria.
Thanks!
Jeremiah
