I did some calculations, and basically you have to remember that this pin is loaded in double shear (at two points, on either side of the stand body where the pin sits), meaning if you imagine for a moment that the pawl is out of play - the pin itself here, which is about 107 square millimetres on each side - is capable of tolerating about five and a half tonnes of load. So you get it set up, the pin goes through, and you're ready to get under. The second aspect thing to remember is that there's a pin in this jack stand, which is a secondary safety device. STAND OF STEEL: How one tiny pin could save your life. You also have to accept that these materials, like steel and cast iron, they're a lot stronger than you think. Out of anything else on Earth, that has to be one of the most dangerous things that ordinary people do - interacting with a chemical like gasoline. I've always heard that the pin inserted in the teeth of the jack stand is essentially taking the load is this correct that's always made me a tad nervous.įirst point to make here is that you just have to accept that engineers do a pretty good job making absurdly dangerous things reasonably safe and if you'd like evidence of that just have a look at any service station, any refuelling station. ![]() I'm a DIY-er and I'm always respectful of the car's desire to ruin my day. Here’s the question AutoExpert received from a viewer named Mario: The moment the wheels come off the ground, it is no longer your trusty steed, it’s desperately trying to crush you.Īxle stands are how you keep this from happening and in my previous report Get Jacked Part 1: Everything you need to lift your jacking game >, we discussed all the tools you’ll need to do this task safely, not excluding the mindset you need to bring to the table. That car you love, in alliance with gravity, wants to kill you when you get underneath it. never support with just a jack, always use stands.If you enjoy working on your own car in your own garage, this report will help you better understand exactly what’s going on with axle stands - which are your first line of defence against the malicious behaviour of both gravity and your pride and joy. Might look at a motorbike scissor lift for each corner, but they seem to top out at 500kg each, false I might get some hefty steel box section and make something myself.That's funny, I also looked at a motorbike scissor stand for each corner too, but then thought I'd have the same issue as using 4 trolley jacks. I initially thought that was the whole point of 'locking' trolley jacks, safe enough to use without stands, but alas no that doesn't appear to be the caseNot really, I did see a couple of similar chinesium options on the usual far east websites, but I didn't really want a container load, and well, I didn't fancy sticking my head under a car supported by a noname mystery brand. However I'm yet to find a locking trolley jack that is safe to use without a stand. ![]() ![]() I'd be interested in something similar too, I found this post via Google while searching for lifting style stands like the RennstandĪt one point I thought locking trolley jacks were the answer.
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