Originally Posted by platokidd
would pin lbs be the same as tongue lbs on a tt ? crunching numbers as I got weighed today
I guess this is for me.
In a 5th wheel the portion of the camper's weight carried by the truck's hitch is called pin weight. In a travel trailer (bumper pull), the portion of the camper's weight carried by the truck's hitch is called tongue weight.
If you picture both type campers as "teeter totters" with the wheels as the fulcrum, you will get the idea as to why all this matters.
In a trailer, the wheels are located "about" the center of the camper. They are moved forward or back depending on where the weight is located (empty). The "Big Weight" is not your camping gear (unless you are me
), it is where the kitchen is located and the number and location of the slide mechanisms.
Rear heavy travel trailers (like rear kitchen models) are designed to place the wheels farther aft to keep the weight "on the tongue" approximately 12% of gross camper weight empty FROM THE FACTORY.
Rear heavy 5th wheel trailers (like rear kitchen models) are also designed to place the wheels farther aft to keep the weight "on the pin" approximately 18% of gross camper weight FROM THE FACTORY.
Depending on where your storage is located, your load plan will have an effect on the final percentage of camper weight to be carried by the truck. This will almost always be more (sometimes A LOT more), than the published "dry pin or tongue". You should always try to load to 12% (travel trailer) or 18% (5th wheel) of total camper weight.
The "Why" is the way the trailer will handle. Placing too much of the weight aft of the fulcrum (wheel set), will result in unsafe handling (severe sway and a tendency to swap ends in a panic stop). Too much forward located weight will result in a nose heavy camper that will nose dive under heavy breaking and lift the front end of the truck reducing steerage (potentially eliminating the ability to control the truck).
Obviously, since even a case of water will have some effect on your final weight distribution, getting accurate axles weights is very important.
Those who think "anything goes" are certainly entitled to their opinion.
Personally, I think my family is entitled to every possible Ace I can put in their hands. I am no automotive engineer; nor am I a lawyer or or automotive executive whose job depends on selling cars, I am a husband and a father. There is no way I would knowingly exceed a limit that could even remotely put my family at risk without a DARN good reason.
Hope that helps.