Dodge pickup towing 141,000lbs uphill

mkirsch wrote:
The truck weighed 70 tons, but he wasn't trying to LIFT it!

Rolling resistance of hard tires on a hard surface is very low. He wasn't exerting more than 2-3 tons of force on that chain.

Entirely possible, even with a normal truck, and not at all worthy of any specific bragging rights.

You are correct on there not being a huge amount of force on the chain. 140K on a 6% grade I'd WAG that at about 8000 pounds of tractive force required to move the load, plus rolling and mechanical resistance. That may not sound like much, but it's like driving your truck up a vertical wall. The really hard part was getting it rolling, which I guess would have taken about 11,000 ft./lbs. of rear wheel torque to make the tires move, based on 140K of weight, 6% grade and 32" tall tires. To figure out if your or my truck could do it, just multiply torque x your low transmission gear x low range xfer case ratio x rear axle ratio and see how the math works. If someone is an engineer with a propeller on their head feel free to correct me if I'm in error. Or you could just hook her up and see what happens.