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Tip over? Posted by Larry West [Email]  (#1140)  [Profile/Gallery]
(more from Larry West) on Wed, 26 Mar 2014 10:32:37
In Reply to: Re: OT: Haven't used Jack Stands for years, BobS, Tue, 25 Mar 2014 19:33:09 Members do not see ads below this line. - Help Keep This Site Online - Signup |
Properly used, jackstands are extremely stable, but they are not immune to the laws of physics. Using them on an incline, or a soft or uneven surface, or not using at least TWO of them for support is just asking for problems.
One big problem is the old "tube-type" stands. These are usually very lightweight, made from two steel tubes, one set inside the other, and the outer one trisected at the bottom and the legs splayed out from there. These things are dangerous! Too much weight can cause them to sink in to asphalt (esp. on a hot summers day), or one of the legs can bend, if there isn't a metal wire welded to all the legs to keep them in place.
Almost any of the beefier cast iron stands will more than support a Saab. But you must use them in pairs, and only lift the car by the ends. Jack from a central point, and place the stands where the tire-changing jack would go on each side. Let the car down slowly. Very stable this way. On the 9000 and earlier, the saddles of most stands will fit fine where the service jack goes. On the later cars, where your jacking point is defined by a notch in the frame seam, it might be good to place something on the stand's saddle to prevent slippage while you lower the car.
A single stand is simply not a stable way to support a car.
For most work, two stands at a time is fine, but if I have to spend any length of time under a car, I prefer to use four and get it all up in the air. Four stands is even more stable than two, and gives you MUCH more space to work in without getting "jammed" behind the stands. Sure, a linebacker might be able to push it all over, but you're not gonna do that just puttering around it, are you?
_______________________________________ Current: 2002 9-5 Aero Kombi Cosmic Blue 2000 9-5 SE sedan, Imola Red 1990 900S Rose Quartz, Auto Past: 1999 9-5 LPT Combi 1999 9-5 LPT sedan 2002 9-5 Arc 1990 900 5-speed 1986 900 turbo Convertible 1991 9000 turbo 1980 99 GLi 1986 900 turbo 1986 900 S 1991 900 turbo 1984 900 turbo 1976 99 GL
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