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Joined: Jan 2005
Posts: 453
CEG\'er
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CEG\'er
Joined: Jan 2005
Posts: 453 |
Originally posted by Auto-X Fil:
Probably would be okay, especially if your subframe is generally rust-free.
Hmmm... my car spent 117,000 miles of it's life in cleveland, so it's iffy. I'll have to take a close look and see how bad it is.
I'm tempted to do it though.
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Joined: Sep 2000
Posts: 9,602
Hard-core CEG'er
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Hard-core CEG'er
Joined: Sep 2000
Posts: 9,602 |
Originally posted by NVSVT:
Just to be anal let me point out two (very) small errors. First, the large BAT bar is 13/16â? or 20.6mm diameter, not 21mm.
And second, IF ATI makes any â??Aussieâ? bars they will be using 15/16â? or 23.8mm diameter stock, not 22.3mm as you listed.
Great point about the BAT bar.
The 22.3mm-22.4mm part about the "Aussie" bar is its "effective rigidity" being as it's "hollow" and not solid.
Being as the BAT bar is actually only a 20.6mm then a 22.3-22.4mm bar is roughly twice as rigid comparatively. (IIRC - Certainly someone will dig out their list of formulas and whip up an exact percentage)
2000 SVT #674
13.47 @ 102 - All Motor!
It was not broke; Yet I fixed it anyway.
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Joined: Aug 2003
Posts: 4,140
Hard-core CEG\'er
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OP
Hard-core CEG\'er
Joined: Aug 2003
Posts: 4,140 |
(22.3^4) / (20.6^4) = 1.37325305, so about 37% stiffer.
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Joined: Sep 2000
Posts: 9,602
Hard-core CEG'er
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Hard-core CEG'er
Joined: Sep 2000
Posts: 9,602 |
Originally posted by Auto-X Fil:
(22.3^4) / (20.6^4) = 1.37325305, so about 37% stiffer.
It's not quite that simple though because you are comparing two different types of materials. {which is not directly mentioned} You have to take into account the material's modulus of rigidity. The Aussie bar is high density chrome moly and the "~22.4mm statement" was only back calculated from the first calculation to be used as a comparative tool.
2000 SVT #674
13.47 @ 102 - All Motor!
It was not broke; Yet I fixed it anyway.
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Joined: Oct 2000
Posts: 113
CEG\'er
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CEG\'er
Joined: Oct 2000
Posts: 113 |
Quote:
You have to take into account the material's modulus of rigidity.
No, not unless one bar is aluminum and the other is steel.
For stiffness of a spring or sway bar, steel is steel. All steels have the same elastic modulus (which defines stiffness), regardless of alloying, heat treatment, density, time of the month, etc. Strength depends drastically on those details, but not stiffness. And since a sway bar is a device that is created with stiffness, not strength, as the design parameter, steel is steel.
-Kurt
50% of all people are below average.
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