ksss wrote:

I have never checked to see how much weight is transferred to the front axle on a gooseneck or RV. That said I run heavy, not so much with the TH but with a gooseneck. I am licensed to 40K and typically right on that in combined weight ('20 3500 DRW). I am struggling to believe that such a small amount of weight is transferred to the front axle. It just doesn't seem possible. The differences between the trailer weight ratings between tag and gooseneck on all the HD OEM's just makes that a leap for me to believe. The way the truck sits when loaded heavy between the two types of trailers says there is more than a couple hundred pounds on the front end with a gooseneck. I don't have data that supports what I am saying, and I probably should have, but when I run over scales which is typically at gravel pits, I just look at gross combined. DOT has not hassled me so I run with that.

Cummins12V98 wrote:

It's very easy math to figure your weight transfer to the front axle. Measure centerline rear axle to centerline front axle. Now how much forward is centerline of kingpin or gooseneck ball from centerline rear axle.

My axle to axle centerline is 170" and forward dimension of kingpin is 4" that is .0235% of 170". My pin weight is 6,000#. .0235% of 6,000# is 141#.

fj12ryder wrote:

Whoops, your math is off a bit. 4" is actually 2.35%. That seems low to me too, mine is about the same amount in front of the rear axle and it puts over 200 lbs. on the front axle, and that's with a hitch weight of about 3400 lbs. Don't know about the math, but that's according to the Cat Scale.

Cummins12V98 wrote:



4 Divided by 170 is .0235 so it depends on how you are doing the math. Take 6000. X 2.35 the number is wrong. Take 6000. X .0235 and it is 141#.

I have to ask, did you go thru the scales then unhook and go right thru again?

Grit dog wrote:

Y’all have to remember as well that a basic moment diagram assuming fully moment resistant or completely free frictionless connections or pivot points will only get you close on weights.
Minor nuances that would require dynamics and even finite element analysis to get an “exact” answer may or will change the numbers…..a little bit.
So y’all can continue to worry about or argue about where “the extra 50lbs” or whatever went. But the principles are sound and now the discussion has gone into the weeds due to those who are proud they know where the decimal place should be and have weighed their rigs a time ‘er 2 and have some theories bouncing around in their beans that are of little real world significance.

Or to put it in layman’s terms. Dually trucks were designed primarily to carry heavy loads. That was and still is the primary goal of having training wheels.
Do ya think that every dually pickup ever made, with the skinny little front tires and axles/springs that don’t have much reserve capacity, would still be the norm if loads in the truck bed (pin weights or cow poops) put a significant load on the front axles?
The answer is a resounding NO.
A Texas front bumper likely puts as much or more weight on the front of any truck than the vast majority of stinger steered trailers out there.

Or, again, in a quick sentence, 12V is speaking the truth here whether y’all want to argue about nomenclatures or wheelbases or not.