In the companion article on recovery physics, we worked through the forces a winch places on an anchor point during a soft-sand beach recovery: up to 3,960 kg on a single anchor for a bull-bar mounted electric winch on a 200 Series Landcruiser in the worst case — a vehicle fully bellied out, chassis buried — or roughly 1,320 kg per anchor once that load is split across the Bush Winch’s two independent winch drums. This article addresses the next issue directly: what do BWA’s twin Sand Anchors actually hold in the ground they’re built for, how does that compare to those winch demand figures, and what closes the gap.

Two Scenarios, Not One

The fully-bellied scenario in the companion article is the worst case — useful for stress-testing the numbers, but not the most common one. Most soft-sand bogs are in less severe conditions: the vehicle is sunk and stuck, wheels spinning, but not bellied out. It’s worth comparing both scenarios, because the anchor demand differs substantially.

The companion article’s resistance formula is:

F = W × Cf × cos(θ)

Where W is GVM (3,300 kg for the reference LC 200 Series) and Cf is a resistance coefficient reflecting how much of the vehicle is fighting the sand. The fully-bellied case uses Cf = 1.2 (chassis buried, full mire resistance). For a vehicle that’s bogged but still riding on its wheels rather than its chassis, Cf ≈ 0.5 is a reasonable mid-range estimate — roughly proportional to wheel sinkage and tyre drag without the chassis-drag and suction component of a bellied out vehicle. This is a reasoned estimate, not a measured one, and an experienced operator’s judgement of the conditions on the day is the better guide to whether 0.5 is too high or low for a typical bog; treat the figures below as indicative rather than final.

Tyre Traction Across Both Scenarios

The tyre traction contribution subtracted from each scenario comes from all four driven wheels, not just the axle the Bush Winch drums are mounted on — this is a 4WD, and the axle without drums is still engine-driven in low range, gripping the sand independently of the wheel mounted winch action. Front axle (1,550 kg, 47% of GVM) and rear axle (1,750 kg, 53%) each contribute, at μ ≈ 0.4 for rubber tyres on loose sand: 620 kg + 700 kg = 1,320 kg total, unchanged between scenarios since it depends on vehicle weight and grip, not how deep the chassis has sunk.

That difference matters: a per-anchor demand of 165 kg in the common bogged-but-not-bellied case is a very different target to hit than 1,320 kg in the fully-bellied worst case, and the Sand Anchor’s holding capacity needs to be read against both.

Sand Anchor Holding Capacity, by Environment

The Sand Anchor uses a 25mm steel auger shaft (120mm flight diameter, two turns) screwed to 900mm depth, with a 320mm-wide, 520mm-long folding spade (1,379 cm² of frontal area) sitting shallower on the same shaft. Modelling the spade and auger flights as separate buried plates at their own depths, using the standard passive-resistance/breakout-factor method for shallow buried anchors (Meyerhof & Adams, 1968), gives the following estimates:

These are engineering estimates, not lab or field pull-test results — real holding capacity depends on moisture, density, grain structure and how well the anchor has been set. The level of moisture is a significant factor. Damp sand gains a small but genuine cohesion from capillary forces between grains (the same reason damp sand holds a shape at the beach while dry sand collapses), and that effect fades at both extremes — bone dry, or fully saturated. Mud gets neither benefit, since it’s saturated rather than just moist, and soft rather than consolidated — it stays the weakest condition in every row.

Matching Capacity to Demand

Putting the two scenarios alongside the table above:

Once the full 4-wheel traction contribution is counted, the bogged-not-bellied case turns out to be comfortably within reach for a twin pair of Sand Anchors in every environment in the table, mud included — that scenario is the common one, and the Sand Anchor handles it. The fully-bellied worst case is a tighter target: firmly packed, moist beach sand actually clears it, lightly moist beach sand falls just short, and dry dune sand or mud remain well short. That narrower shortfall, in the worst-case scenario specifically, is what the next two sections address.

Closing the Gap: Reducing the Load Before It Reaches the Anchor

The anchor doesn’t have to absorb the full fully-bellied demand if the vehicle’s situation is improved first. Two field techniques, both already covered in the companion article’s discussion of recovery technique, work by attacking different parts of the formula:

Digging sand away from the tyres and the underside of the chassis directly reduces Cf. A vehicle that’s been dug out enough to be riding higher in the sand, even partially, is closer to the bogged-not-bellied case (Cf ≈ 0.5) than the fully-bellied one (Cf = 1.2) — every bit of clearance recovered by hand before the winch is engaged lowers the demand the anchor has to hold.

Traction boards under the drive wheels restore the tyre traction contribution. The companion article’s 1,320 kg figure (across all four driven wheels) assumes the tyres can grip the sand (μ ≈ 0.4); spinning, sunk wheels lose that contribution entirely, which is part of why the “instinctive response” scenario in the companion article never recovers its margin. Boards put a firm surface back under the tyres, recovering some or all of that 1,320 kg as a forward force working with the winch rather than a contribution the recovery is missing out on.

Neither technique is a substitute for adequate anchor holding capacity, but both move the actual demand toward the lower end of the range in the table above — often enough, combined with a damp beach and two anchors, to close most or all of the shortfall.

The Other Lever: Reach and Anchor Placement

The holding-capacity tables above all assume the anchor is planted close to wherever the vehicle happens to be stuck. In practice, that’s not always ideal, and it’s where the Sand Anchor’s pairing with the Bush Winch offers a real advantage.

Each Bush Winch drum holds up to 60m of 5mm HMPE rope as standard — already a long reach — and because the rope is only 5mm thick, it’s light enough to carry well beyond that and join on more with soft shackles if an even longer pull is needed.

Line Speed and Duty Cycle

Reach isn’t the only factor; line speed and duty cycle matter just as much, particularly when working against a rising tide. Each drum is mounted directly on the wheel rim at 290mm diameter, so it takes up rope at whatever speed the wheel itself is turning. In low range, first gear, at idle alone with no extra throttle applied, a 200 Series’ published crawl ratio (around 34:1 to 42:1 depending on transmission) puts the wheel at roughly 14–18 RPM, which works out to a drum line speed in the order of 13–16 m/min — using the same yardstick as the companion article, a little over two LC200 lengths (6m, bumper to bumper) of rope taken up every minute.

A comparable 12,000 lb electric winch’s own published rating, on its first rope layer under full rated load, runs at around 4.9 m/min (16 ft/min) — under one car length a minute — so even idling in low range with no throttle, the Bush Winch is already taking up rope roughly three times faster, and an operator giving it more throttle can go faster again. This is a reasoned estimate built from published crawl-ratio and winch-speed figures, not a measured side-by-side comparison, and should be read as indicative rather than exact.

The more decisive practical difference is duty cycle rather than raw speed: an electric winch’s motor needs to shed heat and is built for short, intermittent pulls, with most manufacturers recommending rest breaks rather than sustained heavy use, while the Bush Winch is just the vehicle’s own drivetrain turning in low range and can run continuously for as long as the recovery takes. In a falling-tide or rising-water recovery, where every extra minute spent stationary matters, that gap between a drivetrain that can run indefinitely and a winch motor that needs to cool down mid-pull is arguably more important than the speed difference itself.

Where the Anchors Can Be Placed

The reach and speed the Bush Winch and Sand Anchor provide together mean the anchors can be set wherever the ground actually holds best: the reverse (lee) side of a dune, where sand is typically less wind-disturbed and slightly more compacted, or behind coastal vegetation, where root systems bind the sand and add real cohesion the bare-sand model above doesn’t capture at all.

This is the practical case for the Sand Anchor pairing even where the raw numbers show a shortfall: two anchors, placed independently rather than as a single fixed point, in whichever spot on the surrounding ground actually holds best, reachable because the rope is long and light enough to carry there. A plough-style drag anchor like the Pull-Pal is tethered to the vehicle’s own winch cable at whatever length that cable happens to be, with no equivalent way to extend reach cheaply — the cable, and any extension strap used to lengthen it, are thicker, heavier, and more expensive, and aren’t designed to be paid out and carried by hand the way a 5mm HMPE rope is. That difference in practical reach, not just raw holding capacity, is a real part of the comparison between the two systems.

Sand Anchor vs. Pull-Pal: Weight, Size, and Cost

A plough-style anchor resists differently to a fixed-depth screw anchor — it bites in and then plows roughly horizontally rather than burying to a set depth, building a soil berm ahead of the blade as it travels. Pull-Pal doesn’t publish a soil-holding-capacity figure for this mechanism (only a GVW rating, which is a structural/build spec for the unit itself, not a measured pull-out force), so a direct kg-for-kg comparison against the tables above isn’t possible without a sourced, instrumented test. What can be compared directly is weight, size, and cost — and the two-anchor format is the relevant point of difference.

Sourcing note: BWA figures are the current published specs from bushwinch.com/product/sand-anchor-kit/. Pull-Pal figures come from a retailer spec sheet (cruiseroutfitters.com, pricing dated late 2023) since Pull-Pal’s own site doesn’t publish per-model weight, dimensions and current pricing on one page; the Pull-Pal price shown is the with-case figure (the directly comparable configuration, since the BWA kit is supplied in its own carry bag), converted from USD at the time of sourcing. Treat it as approximate and likely to have moved since.

The comparison that matters most isn’t one-for-one — it’s that BWA’s standard kit already includes two independently placeable anchors for a price in the same range as a single Pull-Pal unit. Pull-Pal itself recommends using two units in a “Y” configuration for serious holding power, which would put the comparable Pull-Pal cost at roughly double — around $1,652 AUD with cases — for the same two-anchor capability the BWA kit provides as standard, at broadly comparable total weight and in a single carry bag.

The Practical Takeaway

The Sand Anchor’s raw holding capacity, on the numbers above, comfortably handles the common bogged-but-not-bellied recovery in every sand and mud condition tested, once the full 4-wheel traction contribution is properly counted. The fully-bellied worst case is the tighter target — firmly packed, moist beach sand actually clears it, but lightly moist beach sand, dry dune sand and mud fall short to varying degrees. That remaining shortfall is real and shouldn’t be glossed over.

But it’s not the whole picture: digging the vehicle down before winching and putting traction boards under the drive wheels both reduce the actual demand the anchor has to carry, and the reach the Bush Winch’s long, light 5mm rope provides means the anchors themselves don’t have to go into the worst ground available — they can go wherever the surrounding terrain holds best. Two anchors, placed well, with the load reduced first, is the realistic combination this product is designed around — not two anchors alone against the worst-case number.