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Ground is ok too. Posted by sondeen [Email]  (#796) [Profile/Gallery]
(more from sondeen) on Fri, 23 Dec 2011 10:38:21
In Reply to: Sure, but as with anything conflicting comments, bender   [Profile/Gallery]
, Fri, 23 Dec 2011 09:58:05
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Bender,
Although I did say there is nothing wrong with storing a car on stands in regards to stressing the frame, there is also nothing wrong with leaving it on the ground, except maybe the tire flatting issue which is up for debate.
You do make a completely reasonable argument that I agree with completely. A car is certainly intended to sit on the ground, weight on its suspension and wheels when parked, and most all cars spend their entire life in this position except when on a lift for repair.
Now what you are suggesting in you last post here is that there are opportunities to screw something up by jacking up the car, like when I had a jack pop and damage a rocker panel because I was rushing to change a flat, or by improperly or supporting the car, say with a stand in the wrong spot, i.e. under a floor pan and not a strong part of the frame. This is a different issue than a properly supported frame experiencing "stress". I will agree with you here again, the tire issue not considered, it is likely best to just park the car as normal, as there is always an opportunity for error in jacking up the car. And if your tires don't permanently flat spot over the winter, then you are doing well and completely removing the risk of a jack or support stand screw up, and saving yourself time.
My intent was to calm your fears about stressing the frame. I come across people quite often that have irrational worries about metal being weakened by completely harmless conditions. I knew a rock climber who would scrap out all his metal climbing gear every 2-3 years because he was convinced the metal lost strength over time because of something he read about fatigue failure and aluminum bike frames. I am sure if I was trained in biology or medicine instead of engineering, I'd do the same with people with irrational worries about catching diseases, but have my own misunderstandings about metal properties.
So keep your car on the ground because cars are designed to sit on the ground. Keep it on the ground because there is a risk to jacking it up and putting it on stands and making a mistake that might damage something. But don’t worry that a car properly supported on stands will have its metal frame permanently weakened by some stress condition.
posted by 192.249.47...
, Fri, 23 Dec 2011 09:59:59, Thu, 22 Dec 2011 19:02:57, Fri, 23 Dec 2011 08:11:52, Fri, 23 Dec 2011 09:58:05, Fri, 23 Dec 2011 10:38:21 <-- Viewing This Message, Fri, 23 Dec 2011 11:47:37, Fri, 23 Dec 2011 14:27:12, Fri, 23 Dec 2011 18:07:58, Fri, 23 Dec 2011 09:31:47, Thu, 22 Dec 2011 19:04:50, Thu, 22 Dec 2011 12:42:55, Thu, 22 Dec 2011 14:07:36
, Thu, 22 Dec 2011 15:54:28, Sat, 24 Dec 2011 08:48:16
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