[s-cars] active sway bar

qshipq at aol.com qshipq at aol.com
Sun Oct 28 12:12:42 PDT 2007

TRW has a couple versions of this system, active and semiactive roll.? Active actually moves the end link mounting points to increase effective bar stiffness.? Semi Active is more like a coupler, where there is no roll bar in a straight line (decoupled), and then it's coupled during turns.? The former is more likely found on the BMW, the latter more likely found on an SUV

Scott J

-----Original Message-----
From: Steve Powers <sbpowers at gmail.com>
To: Theodore Chen <tedebearp at yahoo.com>
Cc: s-car-list at audifans.com
Sent: Sun, 28 Oct 2007 11:45 am
Subject: Re: [s-cars] active sway bar

On 10/28/07, Theodore Chen <tedebearp at yahoo.com> wrote:
> steve's proposal is to have driver-adjustable anti-roll bars.  that's not
> unprecedented.  some race cars have them, though i believe they're
> mechanical, not hydraulic.  an automatic system with less twiddling of the
> rate might also work well; e.g., a system that simply stiffens the roll rate
> and holds it there when it senses that you're flogging the car, and softens
> it after you've stopped driving hard.
> -teddy

yup. the real question is whether the BMW system works on flow or
pressure. the solution I described is pressure only and has no active
components. I like simple.

Steve Powers
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