QUOTE(-storm- @ Aug 28 2008, 03:35 PM)
In my own opinion adjustable will not be as good as adding an non adjustable in terms of performance, the car chassis flexes during cornering and the strut bar is suppose to provide extra strengthening to the strut tower to prevent extra flexing but due to the fact that adjustable can absorb the tension or i can say it flexes thus negating any effect it has on the cornering improvement that a strut bar suppose to provide hence less performance or non at all compare to non adjustable. I think those alloy bars that are in our local market has not met the standards of japanese makes due to cutting cost so i guess steel bars has the most effect in the mean while.
Alumunium is not as strong as steel but its lighter, it takes two times the thickness of the alumunium to match the strength of steel, example a steel bar is 4mm thick it takes 8mm of alloy to match the steel's strength. So i don't believe in local alloy bar because its too thin and it's light weight(not strong) compare to steel bar unless its double the thickness but the selling point of it being light weight is gone and alloy is much more expensive to make it thicker.
Yup, you're definitely right about that about adjustable is not as good as non-adjustable, but i've seen before non adjustable stabilizer bars from japan snapped from the bracket, that is because of the style of the driver themselves. Adjustable stabilizer bar does not mean that it flexes when cornering, but it just lets the joint between the aluminum bar and bracket has some breathing space instead of stretching it to the limit like the non-adjustable ones.
Believe me when i say this, when the adjustable stabilizer bars are properly installed, the holding strength of the strut towers is very significant.
Btw, adjustable strut bars are not really "adjustable" what it means is that it has two component, the stabilizer bar and the bracket which is screwed tightly to the strut tower. The only moving part is the screw which joins the stabilizer bar and the bracket, which has the margin of less than 1 mm between them.
Oh, and you're right, steel's strength is stronger than aluminum if the thickness is the same, but for 3mm hollow aluminum bar, it would take more than 5 tons of machinery strength to bend it. We've tried that.

We normally use hydraulic machine to bend it.
This post has been edited by miseralim: Aug 28 2008, 05:38 PM