17/10/2026
Winching Principles: A Practical Guide
A winch will pull your 4x4 out of almost anything. It will also break bones and write off equipment if you rush it. Winching is slow and deliberate work, built on three things: safety, correctly calculated loads, and clean rigging. This guide covers all three.
The Rules That Keep You Alive
• Clear the danger zone. Never stand in front of or behind either vehicle, and never near the line or a pulley under load. A steel cable that snaps at 4,000 kg of tension recoils faster than you can react. Keep bystanders at least 1.5 times the rope length away, to the sides.
• Never step over a line under tension. Walk around it, every time, even when it looks slack.
• Wear leather gloves. Steel wire develops broken strands, small barbs that slice bare hands open. Gloves matter, even with synthetic rope, which picks up grit that abrades skin.
• Keep hands clear when free spooling. Guide the rope from the top of your palm with the hook held loosely and keep your thumbs out of the wraps near the fairlead. Fingers pulled into a fairlead do not come out intact.
• Damp the line. Drape a winch damper, heavy blanket, or jacket over the middle of the rope. If the line breaks, the weight drives it into the ground instead of letting it whip. On a double-line pull, damp both runs of rope, one damper on each half. Alternatively: Use a lanyard. This is the current trend. Tie one end of an additional line (about 2 m long) to the connection – shackle, winch hook, or whatever is used, and tie it to the vehicle that is winched. If the connection breaks, the additional line should catch it from flying out. This is a surer and better way of dampening the line.
• Load the hook correctly. Load the centre of the hook with the tip pointing up. A tip-loaded hook can bend open at half its rating. Better still, replace the hook with a rated bow shackle or soft shackle, which removes the failure point entirely.
• Use rated recovery points only. Attach to chassis-mounted, rated recovery points or the frame itself. Never use a towball. Towballs shear off under recovery loads and become projectiles; people have died this way in South Africa and Australia. Recovery points to be fixed with minimum 12mm diameter Grade 8.8 high tensile steel bolts.
• Never tow with a winch. A winch (electric motor, gearbox and drum) pulls static loads via its gearbox. Towing adds shock loads and speed it was never designed for.
Know Your Loads (a gap in most guides)
• Most articles tell you to buy a winch rated at 1.5 times your vehicle's Gross Vehicle Mass. That's correct: a 3,000 kg loaded bakkie needs a winch rated at 4,500 kg (roughly 9,500 lb), so a 10,000 or 12,000 lb unit fits.
• What they leave out is that the rating only applies to the first layer of rope on the drum. Each additional layer increases the effective drum diameter and reduces pulling power by roughly 10 to 15 percent. A 12,000 lb winch on its fourth layer may pull closer to 8,000 lb. This is why you rig double-line pulls using a sn**ch block: they let the winch work with more rope out, on the lower, stronger layers.
Estimate the actual resistance before you rig:
Some guidelines:
• Rolling a vehicle on flat, firm ground: is about 10 percent of its weight.
• Stuck to the axles in mud: the vehicle's full weight, sometimes more, because mud suction adds load. Dig around the wheels and clear the suction first; ten minutes with a spade can halve the pull force.
• Steep slopes: add roughly 60 percent of vehicle weight on a 45-degree climb.
• If your estimate exceeds about 70 percent of the winch's realistic capacity, rig a sn**ch block with a double pull on the same vehicle
Steel vs Synthetic Rope (another common omission)
• Steel wire is abrasion-resistant and cheap, but heavy, and it stores enormous energy. When it snaps, it whips violently. It also develops barbs and kinks.
• Synthetic rope (Dyneema/UHMWPE) weighs about a fifth as much, floats in water, stores far less energy, and drops relatively harmlessly if it breaks. It's the safer choice and standard on serious recovery vehicles. Its weaknesses: UV degradation over years, heat damage from a hot drum, or the heat from friction when using a non-steel ring as a sn**ch block, and abrasion over rocks, so use a protective sleeve where the rope crosses an edge. Inspect it more often than steel.
• Drum wraps differ too. Keep a minimum of 5 wraps of steel or 10 wraps of synthetic on the drum. The rope's attachment to the drum is not load-bearing; friction from those wraps is what holds the load.
Rigging Techniques
• Single-line pull. Rope runs straight from winch to anchor. Fastest to set up, and adequate for most recoveries where the vehicle rolls out with moderate effort.
• Double-line pull. Run the rope through a sn**ch block at the anchor and back to a recovery point on your own vehicle. This roughly doubles pulling force and halves line speed. Note the geometry: you only get the full doubling of the pull when both lines run parallel. At a 90-degree angle between the lines, the advantage drops to about 1.5 times. Keep the angle tight.
• Redirected pull. Use a sn**ch block on a second anchor to change the direction of pull when no straight path exists. This adds no mechanical advantage; it only changes the angle.
• Pull straight whenever possible. Side pulls stack rope on one end of the drum, which jams and damages the winch. If you must pull off-axis, stop periodically, free spool, and re-spool the rope evenly.
• Anchors. Use a tree trunk protector strap, at least 75 mm wide, placed low on a healthy, living tree. Never wrap the rope around the trunk; it kills the tree and destroys the rope. No trees? Use another vehicle (handbrake on, wheels chocked, in park or gear), a buried spare wheel, or a ground anchor. In beach sand, a spare wheel buried a metre deep with the strap running out of a trench holds surprisingly well.
• Hardware. Carry at least two rated bow shackles (minimum 3.25 t WLL for a bakkie-sized vehicle) or soft shackles, one sn**ch block rated above your winch's doubled capacity, and a tree strap. Never join steel cable to steel cable with a shackle mid-span; the shackle becomes a missile if anything fails.
The Recovery, Step by Step
• Assess. Walk the scene. Why is the vehicle stuck? Clear mud, sand, or obstacles from the wheels. Choose the straightest pull path.
• Rig. Set the strap, shackle, and block. Check every connection twice.
• Secure both vehicles. Anchor vehicle: handbrake on, wheels chocked. Stuck vehicle: in neutral for the pull, driver at the controls.
• Engage the winch clutch and lock the drum.
• Take up slack slowly until the line is taut. Stop. Do a final walk-around and check the rigging under light tension.
• Damp/lanyard the line and clear everyone from the danger zones.
• Winch in short pulls of 20 to 30 seconds with pauses. This manages motor heat and lets you reassess. The stuck vehicle's driver can apply light throttle in the direction of pull once the wheels can contribute, but no wheelspin.
• Communication (usually left out of guides). Agree on signals before you start. One person controls the recovery and gives commands. Standard hand signals: raised fist for stop, winding motion for winch in, flat palm pushing down for slow. Shouted instructions get lost over a diesel at high idle.
• Battery and engine management (also usually left out). A winch under load draws 300 to 400 amps. Keep the winching vehicle's engine running at around 1,500 rpm so the alternator helps. A long pull on a switched-off engine will flatten a standard battery in minutes and can leave you with two stuck vehicles.
• Self-recovery. When you're alone, operate the winch with the wired or wireless remote from inside the cab. You keep steering control, and you're out of the line's path. Route the remote cable through the window, never through the door frame where it can be cut.
After the Recovery
• Re-spool under tension. Wind the rope back in neat, tight layers while a helper keeps a light load on it, or loop it around a tree strap and drive back slowly. Loosely spooled rope crushes into itself under the next load and jams.
• Inspect everything. Check the rope for kinks, frays, flattened sections, and heat glazing (synthetic). Check shackle pins for bending. Retire damaged gear; a rope is cheaper than a recovery gone wrong.
• Let the motor cool. Winch motors are rated for intermittent duty, typically a few minutes of hard pulling before they overheat. If the housing is too hot to touch, it needs a rest.
• Wash synthetic rope after mud or salt water. Grit inside the weave cuts fibres from the inside.
The Short Version
• Estimate the load, rig for less than 70 percent of real winch capacity, dampen the line, clear the area, and pull in short, controlled bursts. Slow recoveries succeed. Rushed ones bend chassis and hurt people.
Enjoy your travels and release your Spirit of Adventure!!
Martin Jooste (Calanga 4x4)
[email protected]
+27 834491024