so anti-dive acts as a stiffer spring, but just when decelerating? this
reminds me of using sway bars to differentially increase spring rate for
lateral weight transfer (turning). this would seem to be a good thing to
me.
i dont want any higher front spring rate, as it has a big effect on ride
comfort.
james
OSP - Obtuse Suspension Problems
----- Original Message -----
From: "Rick Brown" <rbrown7@covad.net>
To: "Kevin Stevens" <Kevin_Stevens@pursued-with.net>; <Larrybsp@aol.com>
Cc: "BayArea Team.Net" <ba-autox@autox.team.net>
Sent: Sunday, June 29, 2003 7:15 PM
Subject: RE: antidive
> Antidive increases the rate that the weight transfers. Same physics hold
for
> braking as for cornering as Kevin noted. You don't want to transfer the
> weight too quickly for reasons Larry states, but you want the car
responsive
> for quick transitioning. It's a tradeoff.
>
> > -----Original Message-----
> > From: owner-ba-autox@autox.team.net
> > [mailto:owner-ba-autox@autox.team.net]On Behalf Of Kevin Stevens
> > Sent: Saturday, June 28, 2003 11:28 PM
> > To: Larrybsp@aol.com
> > Cc: BayArea Team.Net
> > Subject: Re: antidive
> >
> >
> > On Saturday, Jun 28, 2003, at 23:10 US/Pacific, Larrybsp@aol.com wrote:
> >
> > > eliminate antidive in autocrossing. Its a beneficial characteristic.
> > > Without
> > > antidive as soon as you hit the the brakes you are going to compress
> > > the front
> > > springs and increase the load on the front tires. Remember the
> > > traction circle. If
> > > the tire is loaded from braking forces it loses turning capability.
> > > Not only
> >
> > Aren't you transferring the weight up front anyway? Just as was
> > mentioned the other day with lateral transfer, how much is transferred
> > is just a factor of the CG and deceleration rate. Or is it that
> > regardless of the transfer, you don't want to get that much suspension
> > movement?
> >
> > > have you have used up much of your suspension travel, when you start
> > > your
> > > turn and introduce body roll you can bottom your suspension at which
> > > point you
> > > have no suspension and all the weight transfer load will go to that
> > > tire causing
> > > it to lose traction.
> >
> > Got it. So analogous to lateral roll, it's A Bad Thing primarily
> > because it upsets the suspension or takes it out of the favorable part
> > of its operating range, not because of any inherent physics reason,
> > right?
> >
> > KeS
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