The length of cable you spool out also affects the power of the pull. All electric winch motor are rated based on only one full wrap left on the drum. The less line you reel out, the less power you'll get. For a maximum power pull, unwind enough cable to leave only one layer on the drum. If your anchor point is too close to spool out enough rope, double the line with a snatch block.
Another trick to squeeze the most power out of your winch is to gas the stuck vehicle. A rolling load fuels the momentum of the pull and eases the strain on your winch. Before starting the recovery, dig out around the tires or build a rock ramp to give the stuck vehicle some traction as it begins to move.
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