[s-cars] active sway bar

[Steve Powers]

if it's CAN bus, there aren't any fuses.

(but you can still unplug the thing - risking throwing a code though)

Steve

On 10/30/07, Vincent Frégeac <s.sikss at gmail.com> wrote:
> Just disable the entire thing. That's what fuses are made for, no?
>
> No. Ah, ok.
>
>
> Vincent.
>
> -----Message d'origine-----
> De: s-car-list-bounces at audifans.com
> [mailto:s-car-list-bounces at audifans.com] De la part de Peter Golledge
> Envoyé: 29 octobre 2007 10:48
> À: 'Pasqualoni, James E'; sbpowers at gmail.com; tedebearp at yahoo.com
> Cc: s-car-list at audifans.com
> Objet: Re: [s-cars] active sway bar
>
>
> If you want to see how "ugly" Electronic stability systems are take an RS4
> for a run on an Ice track.  The default mode fights any sort of sporty
> (basic oversteer) turns.  Even after turning ESP "off" you still find some
> unexpected brake actuations as you crank through some big rally style turns.
> There is still some sort of monitoring/correction going on and it fights you
> at exactly the wrong times.
>
> Basically it takes the 420HP monster it could be and makes it something
> less. :-(
>
> Cheers
>
> -----Original Message-----
> From: s-car-list-bounces at audifans.com
> [mailto:s-car-list-bounces at audifans.com] On Behalf Of Pasqualoni, James E
> Sent: Sunday, October 28, 2007 6:06 AM
> To: sbpowers at gmail.com; tedebearp at yahoo.com
> Cc: s-car-list at audifans.com
> Subject: Re: [s-cars] active sway bar
>
> Is this a compnent of the new 'Active Steering' that is being employed by
> BMW?  Would certainly give the steering more "bite' in the twisties.
>
> James Pasqualoni
> Boston Global Advisors
> T: 617-204-2406
>
> ----- Original Message -----
> From: s-car-list-bounces at audifans.com <s-car-list-bounces at audifans.com>
> To: Theodore Chen <tedebearp at yahoo.com>
> Cc: S-Cars <s-car-list at audifans.com>
> Sent: Sat Oct 27 11:48:10 2007
> Subject: Re: [s-cars] active sway bar
>
> your comment tells me that perhaps BMW haven't gotten it right, e.g.
> the control part. I think the idea is sound but the implementation isn't.
>
> if it's dynamic that implies that they are pumping variable pressure to the
> servo under computer control. the pressure into the servo unit is what
> modifies the stiffness of the bar.
>
> what if you replaced all that computer control crap with a hydraulic screw
> pump, e.g. like what you have to adjust ride height on motorcycle shocks.
> the only moving part is a "screw" into a cylinder - pressure is
> increased/decreased by moving the "screw" into/out of the cylinder.
>
> that would allow one to set the stiffness and adjust it very easily (within
> a range) if it needed changing.
>
> Steve
>
> On 10/26/07, Theodore Chen <tedebearp at yahoo.com> wrote:
> > bmw calls it dynamic roll control.  if you like driving, run away!  it's
> part of what causes the recent bmws to feel more like video games.
> >
> >
> > ----- Original Message ----
> > From: Steve Powers <sbpowers at gmail.com>
> > To: S-Cars <s-car-list at audifans.com>
> > Sent: Friday, October 26, 2007 9:08:27 PM
> > Subject: [s-cars] active sway bar
> >
> > I was at a high-end body shop yesterday here in Seattle and got a
> > chance to eye a BMW 5-series rear subframe up close and personal. The
> > unit had been entirely removed from the car with the wheels and struts
> > still attached and undamaged.
> >
> > I couldn't help but notice the servo lump with hydraulic lines located
> > smack dab in the middle of the rear sway bar. It's an active
> > suspension (anti-roll) mechanism that is controlled hydraulically.
> > Assuming the rates were done properly, would be a pretty
> > sweet-adjust-it-from-the-driver's-seat sort of gizmo.
> >
> > Otherwise, it would be a large sinkhole for Pentosin.
> >
> > I could see some here (hi Hap!) modifying such a beast for use in our
> cars...
> >
> > Steve Powers
> > _______________________________________________
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> >
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