Weight distribution

Pretty smiple. You put too much over the trailer axles .. why did you only put 7 k on the front of the trailer ?

 

When you weighed the truck empty how much fuel did you have? Diesel fuel is about 7.1 pounds per gallon.
Assuming the 50k load is accurate: 27,700 empty truck + 50,000 load = 77,700
Loaded truck weight: 10,900 + 27,000 + 38,900 = 76,800
77,700 - 76,800 = 900 pounds diff
900/7.1 = approximately 127 gallons of diesel

 

Drive weight after loaded less drive weight before = 27,000 - 10,700 = 16,300 increase on drive axles not 15,680
I think your logic is flawed. The weight is not all going to one place. Some of the 7k in the middle went to the tractor drives but a lesser percentage than the 20k because it is further away. Some of the 20k is going to the rear of the trailer. If what you say is the middle is the center of the trailer van or flat, the 7k weight is closer to the front trailer axle than it is to the trailer king pin. So much more of that 7k will go to the rear of the trailer.

 

How long is ur trailer ? A 48ft flatbed you have weight to far back compared to how its loaded in the front... Im guessing you have a 53fter since you said its loaded over the last axle as well... If you move that weight over your trailer axles further up towards the middle it will transfer that weight back to the drives... Think of the trailer as a giant teeter totter... More weight on one side vs the other is going to move all the total weight more towards the heavier side..

 

Is it a california spread?

 

Fist off do you know for a fact that you picked up exactly a 50k ?
2.... again do you know for a fact you loaded exactly to the pound you put exactly that much weight in each spot
3. Like others have said I don't think you have any conception of weight transfer
4th do you realize in theory you should load the front half of your trailer alittle more vs the back half ? Again there are variables that have to be considered with my 4 th point
They must not have taught you any thing about weight transfer or loading in CDL school..
If you really want to understand you should probably give more info on the questions asked by the memembers