Forum Discussion
Grit_dog
Aug 27, 2022Navigator
I’m sure some of you, maybe?, realize that computing tongue weight by simply calling the rear axle weight addition the tongue weight is only a good approximation.
If you neglect things like rotational friction and stiffness of members (lol) you can do a moment diagram based on the lengths to each point (axles and hitch) and weights observed at each axle and get pretty close.
But it’s NOT 320+100= 420. Nor is it exactly 320.
But if one is really thst concerned then google and 8th grade math will get you a very close number without actually weighing the tongue. (Which technically would have to be AT the ball and not at the jack if you’re handwringing for that answer that is not just 98% correct but 100%.
And then let’s not get into dynamic forces and how much of that was designed into the static weight rating and if one could exceed that in the right conditions or never reach that in different conditions.
FFS, it’s a little trailer behind a truck that is capable and rated for it. And the OP has done his due diligence to see that he’s in the ballpark.
Next caller please…
If you neglect things like rotational friction and stiffness of members (lol) you can do a moment diagram based on the lengths to each point (axles and hitch) and weights observed at each axle and get pretty close.
But it’s NOT 320+100= 420. Nor is it exactly 320.
But if one is really thst concerned then google and 8th grade math will get you a very close number without actually weighing the tongue. (Which technically would have to be AT the ball and not at the jack if you’re handwringing for that answer that is not just 98% correct but 100%.
And then let’s not get into dynamic forces and how much of that was designed into the static weight rating and if one could exceed that in the right conditions or never reach that in different conditions.
FFS, it’s a little trailer behind a truck that is capable and rated for it. And the OP has done his due diligence to see that he’s in the ballpark.
Next caller please…
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