![]() I found that the manufactures of WD hitches at most only ask for the loaded weight on my TT, TT loaded tongue weight, load in the rear of the TV behind the rear axle but they did not ask about any weight just forward of the rear axle in the TV. This will allow a person to see the effects of load positioning in the TT on tongue weight, weight on TT axles, weight on TV axles, load positioning in TV on TV axles without making a million trips to a CAT scale at a large truck stop.Īfter trying (I guessed at what size I needed) two sizes of WD hitches (which were undersized for my TT and TV combination) I finally started looking at what the manufactures of WD hitches recommend. I also made similar measurement on the TV. I made a lot of distance measurements on the TT from discrete load points to the relevant fulcrum points. The fulcrum points I used are: the travel trailer (TT) rear axle, the TT front axle, between the TT axles, the TT coupler, the rear axle on the tow vehicle (TV) and the front axle on the TV. Fout is the force out at a distance of Lout from the fulcrum. ![]() Fin is the force input at a distance (Fin) from the fulcrum. On my spreadsheet I have drawings showing lever action about a fulcrum.
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