The Saga of Big Red; the little jack stand that could!

CBRich · 05-19-2010, 10:56 AM

Great thread. Rep added.

elmz · 05-19-2010, 12:04 PM

Quote:

Originally Posted by billydsz

Not surprising. Column strength is very high in such a short structure. Did you do the tests at maximum height of the stand? The taller it is the easier it will buckle. However it looks as though the pin will fail before buckling anyway

Good point! I'm curious what the results would be at an increased height where you could actually work under the car.

binto100 · 05-19-2010, 01:19 PM

Quote:

Originally Posted by elmz

Good point! I'm curious what the results would be at an increased height where you could actually work under the car.

That is a good question though I'm not sure the result would have been any different since the force was directly vertical. They did this test for free and I know I can't get another off the cuff.

billydsz · 05-19-2010, 01:52 PM

Quote:

Originally Posted by binto100

That is a good question though I'm not sure the result would have been any different since the force was directly vertical. They did this test for free and I know I can't get another off the cuff.

The taller the column is for a given diameter the weaker it is in a straight down compressive load. At failure the pipe would buckle. However, if the pin is weaker than the buckling load that would fail first.

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05-19-2010, 10:56 AM	#16 (permalink)
CBRich A True Z Fanatic Join Date: Apr 2009 Location: SC Posts: 2,464 Drives: 370Z Rep Power: 544	Great thread. Rep added.