THE NUMBERS ADD UP
LET’S assume our loaded 4x4 – including a trailer, long-range tanks and a bike rack on the back for kids – weighs in at exactly 6000kg. If you were to push
1. The gear you need to perform a double line pull is found in most off-the-shelf recovery kits. 2. A pulley block is one of the most underrated pieces of recovery equipment. The extra pulling force and ability to re-direct winch lines can make for impressive recovery techniques. this on flat, smooth ground, the force required would only be 10 per cent of the total weight (600kg). That 12,000lb winch could drag you and another eight 4x4s reasonably easily.
For every 15 per cent of upwards slope, you need to add 25 per cent of the total load onto what force is required. So on smooth ground, with a 45-degree slope, you’re now requiring 5100kg of pulling ability, just 300kg shy of the winch’s maximum pulling ability.
Add a busted wheel bearing (so you’re dragging a dead weight) and you can see an additional 75 per cent of the total load bringing us up to 9600kg of force required. Mud complicates things even further. Fully loaded in chassis-deep mud can require a ridiculous amount of force (18,600kg, or 41,000lb). That 12,000lb winch isn’t looking so strong on its own anymore, is it?