Dratsabasti wrote:
Why?, 1st gear in even a small truck is low enough to climb a 45 degree hill.
That’s not nearly the same. There’s hardly any mass to accelerate, hence the truck will go from zero speed to zero clutch-slip quickly.
Dratsabasti wrote:
Look at the heavy haulage tractor units, even pulling a load in excess of 150 tons, they don't burn the clutches out very often.
The lead truck didn’t look particularly heavy duty (to me anyway but I don’t claim expertise here).
It would be interesting to know the total mass and rolling resistance of all those trailers (I couldn’t get much out of Google)