In my experimenting with my setup, I feel that definition #2 is more accurate. In all the playing around I did, I was never able to get the front axle weight when hitched up back up to the same level (weight) as when unhitched. Since the added (tongue) weight on the rear leverages some weight off the front, and attaching the WD bars redistributes some of that weight (tongue weight AND weight removed from front axle), definition #1 is not as accurate as #2.
And this may have something to do with the short 130” wheelbase I have. Adding 1000# off the rear has a good leveraging effect, which I think is aided by the short wheelbase. It would be interesting to play around with a 2500 pickup with a longer wheelbase to see what, if anything, would change.
Perhaps a slight wording change to #2…
“Attaching the WD system removes weight from the TV’s rear axle and distributes it to the TV’s front axle and to the TT axles.”
And Tim’s synopsis is very good as well!
