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Old 01-06-2008, 06:14 AM   #1
Silver Mist
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Question Tongue weight ?

Does the tongue weight change if you change the height of the ball?

I think if you lower the ball (nose down) the weight would increase and visa versa.

Anyone ever play around with a scale trying it?

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Old 01-06-2008, 06:48 AM   #2
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On a single axle trailer it should make no difference because the fulcrum point never changes. On a multi axle (2+) trailer there would be some change because of the transfer of weight from one axle to another. If you could lower the trailer enough (in theory) to lift the rear Axel or raise it enough to raise the front Axel, the fulcrum point would be moved the distance between axles and cause a substantial hitch weight difference.

That being said, I doubt that the movement of the ball up or down a few inches would create any significant change.



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Old 01-06-2008, 06:40 PM   #3
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I think you're correct on single axle, I was thinking dual or triple.

Anyone know the math on this?
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Old 01-06-2008, 06:57 PM   #4
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Richard is correct that the change in tongue weight will be neglible within reasonable chenges in ball height (+/- 2 inches).

The math works like this:

1. The weight distribution between axles will change, but the tongue weight very slightly.

2. The change in tongue weight is computed geometrically. You need to locate the center of gravity of the trailer, which is probably a foot ot two above the floor, and 2 to 4 feet ahead of the center point of the axles. You draw a line from the axle to the hitch ball, and a line perpendicular to that line that passes through the center of gravity. As you tip the line forward, by lowering the ball, the perpendicular line will also tilt forward (may 1/4"?) indicating how far the center of gravity has moved. Calculate the weight shift using basic trigonometry.
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Old 01-06-2008, 07:02 PM   #5
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I never had had our rig set up by a pro. We bought the 28 used and the p.o. shoved the hitch in our truck and we drove off. From previous posts I raised the ball to make the trailer level. Initially and for over 7k miles it was slightly tipping to the nose. The truck was always level and on 5 chain links on a reese dual cam. A.S. now riding level and no change in truck. I would really like to take it to inland andy when in California for his opinion, in route and running through nebraska out of michigan.
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Old 01-06-2008, 08:26 PM   #6
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Tongue Weight Change.

I put digital race scales under my single axle trailer and changing the tongue height changed the weight slightly. Lowering it about 3 inched added 5 lbs on a 340 lb tongue. Lowering it about 5 inches raised it to 10 lbs. We didn't go any farther. We were mainly trying to level it out. The weight would be affected more by shifting liquids in the tanks.

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