To further expound on this
The OEM C5 Z06 front sway bar is:
30mm OD, 4.5mm wall thickness
The Hotchkis is:
31.75mm OD and 4 mm wall thickness
HEY, we're talking MM's here!
The Hotchkis is 1.75 mm larger in OD and 0.5 mm thinner in wall thickness.
The Hotchkis was engineered to upgrade a standard C5.
There is therfore hardly any difference between the Hotchkis and OEM Z06 bar in NET Anti-roll stability.
The Hotchkis may be slighly more progrssive in its Transition characteristics due to its thinner wall thickness, which IS an advantage in AutoX. Think Slalom.
However for high speed track where transition is NOT a big factor and Yaw rate IS; the T1 bar offers a better selection over both the OEM and Hotchkis.
Remember the original question was concerning HPDE high speed track work. It is very harsh on the street if used in a dual use car.
Til now there has been a need to bridge the gap between the OEM/Hotchkis sway bar rates and the T1 bar. Pfadt Engineering may have filled that need with it's new "Pfatty" bar which is larger than it's original. The new bar is stiffer than the OEM and fills the complete range to T1 stiffness, maybe exceeding it in it's last adjustment. I do not have Stats at this moment but do have many favorable reports. I would also recommend using Pfadt's Delrin Mounting Bushings when installing this bar. It is also adjustable with different position points AND has adjustable end links which offers mirad possibilities. Skid pad testing and driver input will be required for proper set up and track/course application.
For AutoX competition the original Pfadt bar now named the "Street Bar" would be applicable. It looks like it fills the gap between the Z06 bar and half way to the T1 bar. This taken from their online tech Specs.
For informational purposes only, following is a link to a graphic comparison of the bars discussed.
1.Although the Hotchkis are NOT represented they can be assumed to be close to the C5 Z06 bars.
2. The Rear T1 Bar is shown in a range sorresponding to it's adjustable end links.
3. The Front T1 bar is NOT shown in a range but should be. Consider it to be about the same range as the Rear T1 Bar.
4. The graph shows that the Rear "Pfatty" bar can be adjusted stiffer than the front. Be aware this is sometimes a dangerous condition for an unexperienced driver. Our rule of thumb is that the rear Sway Bar "Rate of Stiffness" should NEVER be more than the Front and ALWAYS either equal to or less than the front.
http://www.pfadtracing.com/t_popup_i...=swaygraph.JPG
