NautiqueFamily wrote:
I don't really understand the above - The Supertruss lower truss bar is solid cast. I am no structural engineer but I cannot agree that a 3ft tube of welded steel is stronger than a trussed set with a solid lower truss..... but you are right; the Supertruss is heavy.
The hitch on the truck comes only as 2.5 not 3 inch, so you are placing the 3 inch OVER the adapter and the ball mount?
The beam bending strength comes with square of the height.
So for example 3" square / 2.5 square= 1.44 and that is how much stronger 3" bar is over 2.5" bar.
Or make it 3" bar is 2.25 times stronger than 2" bar.
I did not know the cross-measurements on SuperTrust, nor the material strength - that is why I consider my calculation rough and since I am not planning to tow anything above 2000lb, that is good for me.
For some reason nobody makes rated 3" extensions, but year ago I could not find 3" ball mount, when now see plenty of them, so hopefully it will come.
OP has 3" receiver and those are rated for 21,000/2,100 lb. Derate them all you want ;). End of the story.
