How Legit is FifthWheelSt's Calculator?

NC Hauler wrote:

Coach-man wrote:
OK, given the litigation prone society we live in, if I were to publish a 5th wheel tow calculator I would err on the conservative side of every calculation! The result would be a good estimate of 80% of the people using it, but when you start using it for the upward side, you would not get an accurate result! As shown in the calculations. As far as the axel ratings, I read in another blog site that with the Dodge Asian tranny, a 3:83 is the equivalent of a 4:10 rear end, not sure of that but just what I read. In any event axel ratios should not effect weight carrying capacities of the TV.

Correct..,.As I stated in an earlier post, gear ratio affects GCWR..doesn't affect GVWR or RAWR. I have the Cummins with the Aisin tranny and it came with 4.10 gearing, (not a 3.83 that is same as a 4.10 with Aisin:h). You can get 3.42, 3.73 or 4.10 with the Aisin in the Dually configuration. GCWR is highest with the 4.10 in a long bed configuration. (my 13' has a GCWR of 37,500#), the 3.73 in long bed offers 32,000#, and 3.42 in long box is 29,000#, .


I still don't think one needs a "5th. wheel tow calculator". You have all the info you need by using GVW of 5er and take 20-22% of that to get pin weight, Then in your trucks drivers side door, you have the data plate telling you payload and RAWR, ( as well as GVWR), Weigh the truck ready to hook up to the 5er, get drive axle weight, subtract that from RAWR...It's some common sense and uses very basic Math skills..So easy, a caveman could do it.:B