Getting bogged can be a beach
ENJOYING the beach in your car can be fun, but it needs serious 4WD skills, writes Stuart Innes.
ENJOYING the beach in your car can be fun, but it needs serious 4WD skills, writes Stuart Innes.
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SOUTH Australia is blessed with good long stretches of beach to drive on. Goolwa Beach is only an hour's drive south of Adelaide, for example, but driving on beach sand can be a trap for the unwary. Do the right thing, however, and you'll be rewarded with views and locations, even fishing spots, that regular car drivers will never know.
A key to driving on beach sand is maintaining momentum and having tyres roll over the top of the sand, not dig into it.
If the sand is soft, keep the power on to avoid digging in or stalling, but not so much power that wheelspin will dig into the sand.
Avoid violent or sudden major moves on the steering wheel; a 4WD can topple over thanks to its high centre-of-gravity and tyres that can cut into the sand, which combined can allow the vehicle to "trip". The straighter the steering the better. Big wide arcs for turns are safe.
It's an idea to use existing wheel tracks; the sand will be padded down more and give firmer grip. Watch that the sand between those wheel tracks is not too high for the ground clearance of your vehicle. If so, it may pay to forge some new tracks; but you'll need more power.
David Wilson, who runs the Adventure 4WD training school, says the most valuable tool a beach driver can carry is a good tyre gauge.
"The best type is a quality dial-type of metal construction. Drop a plastic pencil gauge in the sand and forget about accuracy," he says.
If the sand is very soft and your wheels are struggling to keep up speed and not dig in too much, you will need to lower tyre pressures.
This will lengthen the footprint of the tyre, increasing the area to carry the weight without sinking in.
Adventure 4WD recommends incrementally reducing pressure. Start at manufacturers' pressures and go down in 5psi steps until things run smoothly, but 15psi is about as low as you'd want to reliably go. Tyres will need to be reinflated as soon as the sand driving is done, which is where an onboard compressor comes in handy. If coming off the beach and driving to a servo to reinflate the tyres, drive very slowly and not far or the tyres may overheat, causing a blow-out. At 15psi, you wouldn't want to be going any faster than 25km/h.
Reduce weight being carried - and to help avoid rollovers - especially on the roof rack.
"If you can't carry it inside the vehicle it shouldn't be there. Any weight upstairs will make a 4WD want to have a lay down and rest," Wilson says.
"If stopping long on a beach, I always back up to the high-tide line. This allows the vehicle to move off easier because it is facing downhill, using gravity, and it can use the tracks you made when reversing."
Doing a U-turn on a beach needs to be planned. You need a certain amount of speed and power coming through the wheels to maintain momentum; yet not too fast so the vehicle rolls over.
Avoid making part of the turning arc through wet sand; it can trap a vehicle. It might mean reversing a distance in your own wheel tracks to return to a better spot to turn. Turn downhill to use the added benefit of gravity.
In any case, it's always better to do beach driving just before low tide. You'll have the most beach to work with and if you get stuck, you'll have time to recover the vehicle. If you want a definition of panic, watch a 4WD owner bogged in sand on the beach as the tide is coming in, closer and closer to his wheels.
Be aware of tide times for the beach you wish to drive on, and note that some days even a low tide for that day can have water way up the beach, so select a low water day when even the high tides won't impinge much.
If doing much distance in sand, keep an eye on engine temperatures; the engine can be working hard at low "roadspeeds". Watch for the transmission overheat light if you've got an automatic.
It might look like fun on TV, but avoid splashing through seawater. First, you can't see anything under the water and second, the salt will ruin your vehicle. After beach driving, hose the underside of the vehicle, including in the wheel arches and inside the wheels with fresh water - put the 4WD on a lawn so you don't waste water. Obey no go zones, such as in sandhill conservation areas where wheels can disturb vegetation needed to hold the sand.
On the beach, follow normal road rules, such as keeping to the left of oncoming traffic. And keep greater separation between vehicles. Be aware that some drivers might not want to stop nor even slow because they seek to maintain momentum.
Often in sand driving, some wheelspin is needed for progress, so switch out the ESP if the vehicle has such stability and traction control. Some good 4WD vehicles have a sand setting on the terrain selection. On access tracks down on to, and up off beaches, keep a distance from the vehicle in front; if you're too close and it gets stuck, chances are you'll have to stop and become stuck, too.
Before taking the access track, make sure nothing is coming the other way along it.
Perhaps switch on your headlights as you enter the access track. For part-time 4WDs, engage 4WD at the start of the access track; often the access track, at its beach end, is the hardest part to negotiate in beach driving because it is the most chewed up by the wheels of many vehicles before you.
Always carry a recovery kit, commonly a snatch-strap, gloves and heavy-rated bow-shackles, and know how to use it, including attaching a make-do parachute on the strap mid-way should it break when under stretch. A bogged vehicle often can be extricated by clearing sand from under the car and in front of the wheels (turn off the engine and put on the hand brake before doing this).
Avoid wheel spinning deeper into the bog. If one wheel is spinning, try engaging the differential lock. Or if the vehicle is an older model and does not have a diff lock, an old trick if a rear wheel is spinning while the other is not, is to gently pull on the handbrake.
Some soft roaders can be used in beach driving but remember they tend not to have low-range gearing, their ground clearance may not be enough and their undersides can be damaged because they don't have the stouter protection of serious 4WD vehicles.