Campin LI wrote:
BarneyS wrote:
Campin LI wrote:
WDH's rely on the trucks rear end sag to work. If the truck is leveled first by airbags, adding a WDH will do nothing because you have no rear end sag to lever up. Snip...
Not quite. The WDH will work no matter if there is rear end sag or not. Sag is not necessarily an indication that a WD hitch is needed. You could replace the springs on the rear of a truck with solid steel bars and prevent any sag at all but there would still be weight removed from the front axle and possible overloading of the receiver and rear axle by the addition of a heavy tongue weight. The WD hitch will help correct that situation.
I agree with most of the rest of your post except that I feel the use of air bags is normally not necessary at all when a WD hitch is properly sized and used. Thank you for your contribution to the discussion. :)
Barney
Agreed. It's a simple system with complicated mechanics. In trying to simplify a response, I ended up explaining it inaccurately. Thanks for pointing it out.
I'm finding that this towing forum can get very technical with mathematics, which is fine but not reality for a travel trailer. On this you are technically correct but you did remove a real variable to make your point. Trucks do have springs that compress under load and a WDH does rely on the squat to work. Without squat, you only have rotation. Depending on how long your truck is and how much tongue weight there is, the back may not rotate down all that much and if that is the case, most WDH will not be able to adjust much at all. 1 chain link or 1 washer is an inch. What if you only need 1/2 inch adjustment?
