ABS brakes
in [Drive]
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From: Nick Naim on 21 Apr 2010 23:55 I pegged her at 70 years old plus minus. She pulled out of a fast food on my left in a heart beat I,m in the left lane of thru traffic. I,m on the binders on ABS and they are working on overtime. I come to a stop 3 feet from her right front fender.
From: Alexander Rogge on 23 Apr 2010 12:35 Ashton Crusher wrote: > On Thu, 22 Apr 2010 21:47:45 +0000, Alexander Rogge > <a_rogge(a)yahoo.com> wrote: > >> The ABS should not be activating on a dry surface, as this increases >> your stopping distance. >> > > ABS will activate on a dry surface the same as on a wet surface > whenever the tire is about to lock. And in the process it shortens > your stopping distance, not increases it. That would depend on the sophistication of the ABS program, along with the stability-related properties of the car. Most of the programs on the cars that I have tried will miss the threshold at which braking pressure is optimised for minimum stopping distance. Instead of the tyre providing the expected friction against the road surface, the ABS program attempts to guess about when the wheel should not skid, and as a result the program delays the application of maximum braking pressure.
From: Alexander Rogge on 23 Apr 2010 12:47 Scott in SoCal wrote: > Last time on rec.autos.driving, Alexander Rogge <a_rogge(a)yahoo.com> > said: >> The ABS should not be activating on a dry surface, as this increases >> your stopping distance. > > My ABS kicks in quite often - usually during an aggressive turn. :) That sounds like you are braking after entering the turn. A sophisticated braking program should then realise that you have made an error by braking late, and attempt to adjust the velocity of each wheel individually such that the car will be provided with maximum control during the turn.
From: Dave__67 on 22 Apr 2010 08:08 On Apr 21, 11:55 pm, "Nick Naim" <orb...(a)ix.netcom.com> wrote: > I pegged her at 70 years old plus minus. > She pulled out of a fast food on my left in a heart beat > I,m in the left lane of thru traffic. > I,m on the binders on ABS and they are working on overtime. > I come to a stop 3 feet from her right front fender. If your ABS is kicking on on dry clean pavement you need better tires- you're throwing away stopping distance! Dave
From: Ashton Crusher on 22 Apr 2010 21:04
On Thu, 22 Apr 2010 05:08:07 -0700 (PDT), Dave__67 <spamTHISbrp(a)yahoo.com> wrote: >On Apr 21, 11:55�pm, "Nick Naim" <orb...(a)ix.netcom.com> wrote: >> I pegged her at 70 years old plus minus. >> She pulled �out of a fast food on my left in a heart beat >> I,m in the left lane of thru traffic. >> I,m on the binders on ABS and they are working on overtime. >> I come to a stop 3 feet from her right front fender. > >If your ABS is kicking on on dry clean pavement you need better tires- >you're throwing away stopping distance! > > >Dave How do y9ou figure that? ABS works, wet or dry, to maximize the amount of time the tire is at or near peak friction level. |