Interested in some feedback from other members here.
I've had someone approach me to haul water for them offroad here in BC. They're wanting me to install a 4600 gallon slide tank in my tandem dump and shuttle water from a reservoir to feed lots, about a 5km trek one way, relatively bumpy ground so I'd be crawling in 2nd or 3rd, which they're aware of and ok with.
The main concern I have is with weight. The truck is legal here at 26,100KGs, and weighs 10,800KGs with me in it. The slide tank will weigh 2,500KGs so I figure being able to carry at least 3,300 gallons legal. They've asked if I would be willing to carry full tanks for an added bonus. I'm calculating 4600 gallons would put the truck right at 31,000KGs, which is quite a bit overweight.
The truck is configured with 46k rears and a 14k steer/front airbag leaf helpers. To do this I'd be installing a 20k steer and a second gear (truck needs it anyways). It's a single frame truck with air bag suspension.
How heavy is too heavy? Any thoughts would be appreciated. I know it's overweight and am not looking for criticism on that point, more suggestions as to how far I could consider compromising.