Showing posts with label outdoors. Show all posts
Showing posts with label outdoors. Show all posts

Monday, 7 January 2013

How to use a snatch strap safely when 4WDing

A snatch strap is a critical piece of recovery gear, but it's also potentially dangerous. Many people have or know of horror stories of things going wrong with very dangerous consequences.
 
No recovery method is risk free. Indeed, 4WD itself (as with on road driving) is a long way from risk free. As with everything in life, what to do depends on the particulars of the situation and then minimising the risk as much as possible.
 
To safely snatch a vehicle from a bog:
 
1. Consider what other methods can be used to recover your vehicle. In sand especially, try the following options first.
 
Before you get bogged...
- Engage low range
- Approach the boggy or soft area with as much speed as is safe and in a low gear - usually 2L. Ensure that there is lots of revs, usually about 3500. Don't stop at all if you can help if. I know this sounds contradictory, but if you are slipping in the sand try to slow down while still keeping the revs up, but don't stop! Try to avoid changing gears.
- If you can get out, try again with more speed and more revs.
- If you do stop moving totally, then stop spinning your wheels if you don't get traction quickly, or you will get bogged more. It's a fine line between too much to dig you in, and too little to slow your momentum.
 
- A passenger or two (or three or more) pushing can get you through a small soft patch so that you might not get bogged. Adult passengers should be ready to jump out on soft sand and bypasses, as a quick shove might be enough to keep you moving through. Keep going til you are past the soft patch; don't stop for your passengers until you are on harder ground. It might seem mean, but it's better than having them push the car out again.
 
- If the wheels are dug in, then dig the sand out and try again.
 
- If you have traction mats, then now is the time to use them.
 
- Can you lower your tyre pressure any more? If you're not at 20psi or below, then you should have been before you got on the beach. Dropping down to 18psi is good for the beach, and you can cautiously go down to 15psi for a boggy patch, just make sure you reinflate once you're out.
 

2. If the above isn't enough to get you out, then you may need to snatch. Only attempt this if the recovering car is capable enough - this is where anyone with turbo diesel is your friend and unfortunately, a Suzuki isn't much help at all.

3. Attach the snatch strap to the bogged car. Sometimes it's easier to snatch backwards and try the boggy patch again, sometimes it's best to statch forward through the boggy patch and beyond.

Attach the snatch strap to both cars to rated recovery points with rated shackles, ensuring that there are no twists. Remember that tow points are not recovery points. If you don't know if you have rated points then check your vehicle manual; they may need to be installed as an aftermarket accessory. Ensure (before you leave) that your shackles will fit through your recovery points - the Kluger is notorious for having rated recovery points as standard, but they are too small to fit most shackles though! (Since the Kluger doesn't have low range either, there's a good chance that they will get bogged anyway...)

Using one snatch strap is generally preferable, however there may be occasions where two are needed to be joined to give the recovery car a better position. NEVER ever join two straps with a shackle - if something breaks this could be deadly. Instead, loop one inside the other to make a figure eight. If you ever want to get them apart again, then place a rolled up magazine, newspaper or similar in between before you use it.


 

4. Dig out any sand which has gotten caught around the wheels or low clearance of the car

5. Use a towel, tarp, blanket, specialised recovery dampener or something to wrap around the middle of the snatch strap. If something fails and snaps, then the dampener will help to absorb some of the force so the strap doesn't fly and become a dangerous missle. This is a critical step which isoften overlooked. Skipping this step could result in a broken windscreen, a lost eye, a concussion or worse.

6. Get all passengers into a safe position. Depending on your surroundings, this may be out of the cars and further up the track. In other situations, it may be in the vehicles. The photo below was taken by the passenger in the bogged car. It was on a very busy bypass track with many, many cars going through at speed (see step one.) The track is very chaotic and busy, and steering is unreliable in sand. It was decided that the risk of a broken strap was less than the risk of being hit by car going past. Ensure that all shovels, eskys etc have been moved out if the way and that there is a clear path.

7. Agree on the plan. How far will the recovery car need to pull the bogged car? What is the stopping point? Is there a point where the recovery car can stop the tension on the strap, but still have both cars carefully moving to harder ground before removing the strap? What is the communication? Decide on hand signals, horn honking or using radios. This is a situation where it may be safer to have the passengers in the vehicle and communicating with each car, so that the drivers can use both hands for driving. Make sure any onlookers are out of the way and aware of what's happening.



8. Time to start snatching. The recovery vehicle (which should be in low range, lots of revs etc) should start to move to tighten the slack in the strap. Once it's tight, keep going until the bogged car is free. The driver in the bogged car should try to get revs up (without spinning wheels) and get as much traction as possible. At the same time, s/he needs to be cautious that s/he doesn't get a lot of traction quickly and shoot forward. Skill, good planning and good execution are all required. The driver of the recovery vehicle needs to be aware of it's limitations. If it loses traction, then stop immediately (using prearranged signals) before you get two bogged cars. Reassess the situation, and try something else if needed.

9. Once both vehicles are out, stop as soon as it is safe to. The driver of the bogged car needs to take extreme care not to drive over the strap while it's still connected. Disconnect the strap and the shackles, and make sure that all recovery gear (shovels, towels, shackles etc) go back into the car(s). Reinflate tyres back to 18psi if needed.

10. Continue on your merry way, enjoying your 4WDing adventure!

Saturday, 5 January 2013

4WD Recovery Kit for Sand - list



I love love love four wheel driving. Unfortunately we haven't been as often as I would like. We used to be very regular visitors; going to Fraser Island once or twice a year, although our recent trip was the first time in three years. I wasn't confortable going while I was pregnant - I felt so awful, although even if I hadn't I wouldn't have gone due to the isolation. We didn't want to, or had the opportunity, to take a tiny baby. When the opportunity arose to take Chubs over we jumped at the chance. Unfortunately this will have been our last trip for the forseeable future.

A really, really good way to have an awful trip to Fraser Island or any other sand driving is to get bogged and to not be able to get yourselves out. Here's a list of things to have in your recovery kit.

Essential
1. A capable vehicle. You will never know your vehicle's limits until you try to go beyond them, but baby steps are a really good idea. Don't go to Fraser for your first trip - try Bribie Island first. Consider how much gear you have as well - don't overload the roof racks. Towing off road is a whole new ball park, so unless you car has the grunt to do it then don't even bother, or hire a tractor.

2. Knowledge and experience. Make sure you know where you are going and that you know how to use your recovery gear. You need to be able to engage 4WD on your vehicle and also all of whizz bang features. If you aren't an experienced 4WDer, then go away with someone who is who can help you. While helping other people get unstuck is part of the 4WD fun, it's poor form (and potentially dangerous) to rely on someone else outside your party. Read up on blogs, fora or magazines, or join a 4WD club if you need more help and confidence.

3. A shovel. Especially for sand driving, a shovel will be essential to getting you out of soft spots. Even if you can't get yourself out wth digging alone (which isn't uncommon), digging out is an important step before snatching or winching and makes both much more effective and safer.

4. A snatch strap. A snatch strap is a long strap which is elastic (about 10%). The elasticity helps to pull (or 'snatch') the second car out. Make sure that it is cared for well. Don't try to use a tow rope or anything else as a snatch strap as they could fail and don't have the elasticity. ALWAYS make sure you snatch safely using a dampener of some kind.

5. Shackles. These need to be rated, large enough for the mass of your vehicle but still small enough to fit through your recovery points (and the recovery points of your recovery vehicle).

6. Recovery points on your vehicle. These should be rated. Remember that tow points are not recovery points.

7. Towel, blanket, recovery dampener or similar. You need something with a little bit of weight which can be placed over the snatch strap to cushion the force if needed if something fails or snaps while snatching.

8. Regular travel gear. When 4WDing it's impossible to know how long a trip will take. What takes 90 minutes one time may quite easily take four hours another time. You need to allow time to get bogged, to turn around and go back, to wait for other traffic to pass on a one lane track or bypass, to get your car unbogged, to get someone else in your party or ahead of you in the track unbogged. All the normal things you would take for a long trip are essential - plenty of water, substantial snacks (eg muesli bars), sunscreen, insect repellent, first aid kit, wide brimmed hat and shoes. If you are digging someone out and pushing cars in the hot sun, these are all crucial.

Nice to have

9. Traction tracks. The best best best ones are the rigid plastic ones, but they have an associated price tag. These big orange pieces of plastic will make short work of any soft sand though, so for a frequent tripper they are worth the investment. I've never been keen on the folding ones - they are better than nothing but in my experience not by much.

10. Winch - electric or hand. By the time you're installing a winch bar, I'm guessing that you're getting your 4WD info from places other than this blog! An electric winch is the ultimate in self recovery (and in my experience not needed in frequently populated places such as Fraser Island) but by that stage you're talking about dual batteries and other complications, so these aren't for your first trip!

11. High lift jack. Again, you're getting into hard core gear here. Useful when needed, but that's not often if you're just sticking to Fraser.

12. Compressor. The excitement starts to build when you drop the pressure in your tyres, just before you hit the sand. It's a long way back to the servo to pump them up again when you're finished though. Driving on tyres at 18 or 20 psi on bitumen is going to wear them out pretty quickly. You may find yourself bogged and needing to drop your tyres to as low as 15 psi or perhaps lower. If you have a compressor then you can boost them up again before you get to the servo, reducing your chance of rolling off the rim. If you do purchase a compressor make sure it's a good one - cheap flimsy ones will take ages and won't stand the distance. In an emergency you can use a bike pump with the right attachment - it is hard, hard going but much cheaper than a decent compressor. You certainly wouldn't want to inflate from 18psi to 32 or 40psi, but it might get you from 16psi back up to 18 - if you're desperate.

13. Spare spare tyre. If you get a puncture or roll a tyre off the rim when the pressure is low, then that's a mighty big risk to be taking to return home with no working spare. If you have the space at all, then a second spare is a great investment, especially if you need to drop your pressures below 18psi.

Perhaps most importantly, make sure that your recovery gear is all easily accessed. A snatch strap is not very useful if it's under the seat, blocked by the esky, four bags and a pack of nappies. Shovels can be strapped to the outside of roof racks easily - don't put any recovery gear under a straped up tarp. When it's needed no one is going to feel like unpacking all of your roof racks to get to it, then securing it all before you're unbogged, and then putting it all back again. If it's not accessible, then you won't use it.

What's youre favourite 4WD adventure destination?

Wednesday, 2 January 2013

4WD cleaning up tip

It looks like we won't be going 4WDing for the forseeable future, unfortunately.



Whenever we return from a trip, I wash the snatch strap before putting it away. To do this easily and effectively I put it in the washing machine. I wash with a very small amount of detergent (less than a quarter) and with cold water and extra rinse. Line dry it very well before packing it away.

A snatch strap is a critical piece of recovery gear, especially in sand like on Fraser Island. They aren't cheap either, so make sure you look after it. Some snatch strap care tips:

- Wash and dry your strap completely when you return from a trip before packing it away
- Inspect it before and after every trip for signs of damage. Better to discard it and replace when you are at home than to have it snap when you are doing a recovery and leave you stranded or worse, injur someone.
- Keep it in a bag instead of rolling around in the car where sand and dirt can damage it. That's a good place to keep your gloves and shackles too, just make sure that you can get to it.
- Attaching the snatch strap to the car and leaving it there is really only necessary when doing a water crossing. If you get stuck while doing a water crossing, then it may be hard to reach your recovery point, and seconds count. By the time that you have found the recovery point, attached the snatch strap and run it to your recovering vehicle, then both the car and then engine may be flooded. However, in the case of sand or mud it will usually be easy enough to attach the snatch strap if and when needed, rather than leaving it attached and wrapped aroung the bull bar or roof racks. When exposed like this it experiences more wear and tear than necessary and may be more of a hassle. Sometimes it's easier to snatch a car backwards, so if you have attached to the front then moving it will be necessary anyway. So to preserve its life, only attach when and where needed.
- Ensure that shackles are cared for well. Only use rated shackles and don't drop them or bash them about. Again, it's preferable to replace a shackle at home than to have one break and become a missle when doing a recovery.

Have fun four wheel driving, and as always do it safely!

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