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MX, SX & Off-Road Discussions
General Moto | Off-Topic Posts
Hitch-mounted hauler for 2 bikes?
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[QUOTE="Highbeam, post: 470180, member: 23735"] I never heard of a distance requirement at which the tongue weight is to be measured. Maybe there is such a number, it would be important when looking at these types of carriers. If you applied the 500 lb max tongue weight way back, say 100 feet, the front end of the truck would begin to get light and may lift. At this point the rear axle is loaded with the tongue weight of 500 lbs plus the weight that was on the front axle. When you apply a force at a distance you create a twisting force (moment) measured in ft-lbs. This twisting force is what you folks intuitively feel will cause failure of a hitch when loaded way aft of the bumper. Several things can fail first... the frame could bend, the axle/suspension could collapse, the bolts of the hitch could be pulled apart, or the hitch itself could bend down. Like a fat dude on a teeter totter the greatest twisting force will be present above the fulcrum and if the board is the same strength through its length then I would expect the board to break at the fulcrum. It gets real tricky with a weight distributing hitch. [/QUOTE]
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Forums
MX, SX & Off-Road Discussions
General Moto | Off-Topic Posts
Hitch-mounted hauler for 2 bikes?
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