RinconVTR wrote:
The weight at the jack will always be a little MORE...yes MORE than the hitch/coupler.
That is exactly correct. I have the Sherline scale and their instructions clearly state "The most accurate measurement of tongue weight is achieved by measuring right where the hitch actually rests on the ball"
Then they state:"Once you are familiar with your trailer, it will be easier to measure tongue weight at the tongue jack rather than at the hitch. Once you have determined the actual tongue weight at the hitch, we recommend you take a reading at the tongue jack itself."
Once you have determined what are TW at hitch and TW at Tongue Jack, then you use the following formula as per Sherline instructions:"For the ultimate in accuracy, note the actual difference in weights and calculate the ratio by dividing the full hitch weight by the weight at the tongue jack.
Example:
Weight at hitch = 950 lb.
Weight at jack = 1000 lb.
950 ÷ 1000 = .95
Future measurements at the jack multiplied by .95 will yield the exact weight at the hitch itself."
