I put the entire rig over a scale early in the journey. Car and van separated.
RRS was 1200kg on the front axle, and 1220 at the rear.
Van has a ball weight of 80kg, and an overall weight of 1820 (with the load we took). So, overall, 3240kg.
Nope. It would just jack itself back to normal height. 80kgs isn't much load, given that the limit is over 300kg.
I understand the rules of drag. Don't drive fast. 90 kph worked just fine. 100 kph would give in the order of 25% more aerodynamic drag. Let the idiots find the kangaroos.....
We had one day with strong headwind, and one with strong tail, but mostly it was crosswind. Consumption in both directions was pretty similar.
It was amusing talking to Toyota owners, who would generally lead with a smart **** comment about the RRS. Just had to ask their consumption.
The number of vehicles towing vans that were above their legal limit was astounding. Why that isn't policed, I don't understand.