I'm looking at getting rid of the 22' straight truck and switching to a 28' single axle pup with single axle peterbilt tractor. Before I do this I'd like to compare apples to apples with my current set up versus tractor/pup versus straight truck tandem axle. You would think the dealers could help with this, but I have conflicting info and am not about to spend 100k to get the wrong truck.
Here are the specs. Can anyone help me figure out the "loaded perfect payload max"? I understand that tires and wheels have to be rated right, I know that max on any axle is 20k, I'm just a little lost on bridge formulas.
Single axle tractor - front axles rated 12,500, rear axle 23,000, wheel base 13.75', truck weight 11,250.
Single axle 28' pup - axles rated 23,000, no idea on the distance from this axle to the rear of the tractor axle. Trailer weight is 9,500.
Just going by what I think I know, I'm thinking 20k rear trailer axle, 20k rear tractor axle, 12k front tractor axle minus total weight = 31,250 left over for driver, payload, fuel. Am I correct here or is the bridge formula going to trump this? Will it be incredibly difficult to load the truck near max?
Here are the specs. Can anyone help me figure out the "loaded perfect payload max"? I understand that tires and wheels have to be rated right, I know that max on any axle is 20k, I'm just a little lost on bridge formulas.
Single axle tractor - front axles rated 12,500, rear axle 23,000, wheel base 13.75', truck weight 11,250.
Single axle 28' pup - axles rated 23,000, no idea on the distance from this axle to the rear of the tractor axle. Trailer weight is 9,500.
Just going by what I think I know, I'm thinking 20k rear trailer axle, 20k rear tractor axle, 12k front tractor axle minus total weight = 31,250 left over for driver, payload, fuel. Am I correct here or is the bridge formula going to trump this? Will it be incredibly difficult to load the truck near max?
