Originally Posted by Broncoslover
How do you get a good tongue weight reading?
I've only used CAT scales: cat-scale-locator
, and found them to be reliable, precise and cheap.
Make sure your truck and trailer are fully loaded.
Make one pass with just the truck.
Make a second pass with truck and trailer but the WDH chains slacked.
Make a third pass with the WDH chains cinched up as you like.
The total of the 1st pass gives you the Truck's GVW (gross vehicle weight).
The total of the 2nd or 3rd pass will give you the GCW (gross combined weight) of both truck and trailer.
So the trailer's GVW is the 2nd (or 3rd) total minus the 1st total, or GCW - GVW of truck.
The 2nd pass will also give you the trailer's GAW (gross axle weight) w/o the WDH. Subtract this from the trailer's GVW to get the tongue weight.
You can compare the 2nd and 3rd pass GAWs to see how the WDH is moving weight from the rear truck axle to the front truck and trailer's axles.