What are safe jack points?
06-08-2005, 01:17 AM
#21
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anyone familiar with chocking vehicles (like the fire dept does after an accident) knows that 2x4s and 4x4s are excellent equipment for holding vehicles. For example, 4x4s (actually 3.5x3.5) crossed over each other (kinda like those old lincoln logs) can hold 6000 lbs per crossing. So, if you crossed four 4x4s over each other, you could hold effectively 24000 lbs. Just make sure that the whole structure is square.
06-08-2005, 05:04 AM
#22
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Originally Posted by Mr_Goodbar
anyone familiar with chocking vehicles (like the fire dept does after an accident) knows that 2x4s and 4x4s are excellent equipment for holding vehicles. For example, 4x4s (actually 3.5x3.5) crossed over each other (kinda like those old lincoln logs) can hold 6000 lbs per crossing. So, if you crossed four 4x4s over each other, you could hold effectively 24000 lbs. Just make sure that the whole structure is square.
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06-08-2005, 12:18 PM
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Originally Posted by 3rdgenlxi
2X4's ?! Ok my sedan weighs 3000+ lbs and i can break a 2X4 with my bare hands. I don't think i'm gonna try that one.....
Wood is strong enough to stick under your car to keep it up.
2X4's ?! Ok my sedan weighs 3000+ lbs and i can break a 2X4 with my bare hands. I don't think i'm gonna try that one.....
Wood is strong enough to stick under your car to keep it up.
06-08-2005, 12:51 PM
#24
WRX cuz Honda won't wagon
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Let's get back to talking about chassis jack points.
To set this straight:
- a wood 2x4 has a low TENSILE strength, as witnessed when 3rdgenlxi can break them with his bare hands
- a wood 2x4 has a high COMPRESSION strength, as mentioned by Goodbar.
If you use 2x4's as ramps, that's tensile. If you use them on flat ground which supports the entire length of the 2x4, that's compression.
Now SHUT UP and LET'S GET BACK TO CHASSIS JACK POINTS!!!!!!
To set this straight:
- a wood 2x4 has a low TENSILE strength, as witnessed when 3rdgenlxi can break them with his bare hands
- a wood 2x4 has a high COMPRESSION strength, as mentioned by Goodbar.
If you use 2x4's as ramps, that's tensile. If you use them on flat ground which supports the entire length of the 2x4, that's compression.
Now SHUT UP and LET'S GET BACK TO CHASSIS JACK POINTS!!!!!!