"Lloyd E. Sponenburgh" wrote:

"Pete C." fired this volley in news:5162b879$0$6388
:

The weight of each section of mast is added to the lift as each section
comes into play and is no longer resting on the stops.

No doubt, but trivial compared to the sort of weights one would be
concerned about. It's not a 'non-linearity', but a step function. (If
you're on mast section 2, add 410lb, etc...

Lloyd

Not so trivial if it leads you to leave 1,000# of stuff for another trip
when you could have finished the job and loaded the semi to rated
capacity if you had accurate weights. That extra trip could cost
hundreds of dollars in time and fuel, cutting into your profits. Iggy
also needs to make a trailer load calc application for a laptop or
tablet so he can enter the weight and load position on the trailer and
see the calculated axle weights.