CR Sway bars
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Joined: Apr 2003
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From: Temple City
Originally Posted by gernby,May 12 2010, 03:31 PM
I can't imagine ANY car not understeering with the steering wheel turned all the way.
i agree with him, at oem, my rear would slide out as well.
i have swift front, oem rear. understeer tendencies as well.
Joined: Jun 2009
Posts: 4,330
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From: San Jose, California
Originally Posted by ronac,Mar 24 2008, 09:51 AM
I gathered some information from the swift sway bar thread and the hardtopguy CR parts thread. I did some calcs and found the stiffness of the CR sway bar.
Hardtopguy
Swift
I used the dimensions given for each model bar and matched the stiffness given from the swift thread. I used the same calculation for the CR sway bar with a thickness of 4.5mm (front and rear) which I found from the hardtopguy CR parts thread.
These calculations seem to make sense since, when compared to the 120 series bar, the front is ~30% stiffer and the rear is ~10% softer. Which matches the info I found:
CR front sway (roll) bar +36% increase in stiffness (w/ 19% less wall thickness and i believe it's hollow)
CR rear sway (roll) bar -10% DECREASE in roll stiffness (seems they want to tame the tail end of the car, makes sense and will give even more 'feel' to the front sway bar doing more)
The Stiffness for the CR Sway bar is:
Front: 61.0 N/mm
Rear: 61.7 N/mm
For AP1 owners which have the 100 series bar, it probably isn't worthwhile to buy a CR front sway as the stiffness is very similiar. Unless, of course, you're interested in the ~7% from a larger diameter/smaller thickness bar.
Hardtopguy
Swift
I used the dimensions given for each model bar and matched the stiffness given from the swift thread. I used the same calculation for the CR sway bar with a thickness of 4.5mm (front and rear) which I found from the hardtopguy CR parts thread.
These calculations seem to make sense since, when compared to the 120 series bar, the front is ~30% stiffer and the rear is ~10% softer. Which matches the info I found:
CR front sway (roll) bar +36% increase in stiffness (w/ 19% less wall thickness and i believe it's hollow)
CR rear sway (roll) bar -10% DECREASE in roll stiffness (seems they want to tame the tail end of the car, makes sense and will give even more 'feel' to the front sway bar doing more)
The Stiffness for the CR Sway bar is:
Front: 61.0 N/mm
Rear: 61.7 N/mm
For AP1 owners which have the 100 series bar, it probably isn't worthwhile to buy a CR front sway as the stiffness is very similiar. Unless, of course, you're interested in the ~7% from a larger diameter/smaller thickness bar.
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May 29, 2013 11:32 AM