As the owner of a '98 S10 PU, I support that claim!
Paul
-----Original Message-----
From: datsunmike <datsunmike@nyc.rr.com>
To: Alex Avery <aavery@rica.net>; Chris Saulnier
<CSaulnier@enerconmaine.com>; Roadster List (E-mail)
<datsun-roadsters@autox.team.net>
Date: Friday, June 08, 2001 8:41 AM
Subject: Re: More ABS griping
>I recently read that GMs ABS for P/Us is poorly designed.
>
>Mike
>
>----- Original Message -----
>From: "Alex Avery" <aavery@rica.net>
>To: "Chris Saulnier" <CSaulnier@enerconmaine.com>; "Roadster List (E-mail)"
><datsun-roadsters@autox.team.net>
>Sent: Thursday, June 07, 2001 11:20 AM
>Subject: More ABS griping
>
>
>> I'm not a fan of ABS either. I've driven my wife's '97 GMC 2500,
extended
>> cab, 5th-wheel hitch (not a duelie) mega truck daily 30 miles to work and
>> back for the past 4 years and I love it---EXCEPT for the darn ABS brakes.
>>
>> Every time I'm stopping on sand or gravel or even simple bumpy surfaces
>> where the wheel will lift off the pavement for a split second (not panic
>> stops, just plain-old, every day brake use) the ABS kicks in and I find
>> myself traveling 10, 20 or even 30 feet farther than I intended. These
>> same intersections/road sections are fine in my Ford Contour that doesn't
>> have ABS. This can be very dangerous when you're driving in dry
>conditions
>> and haven't factored in this unexpected distance into the equation. From
>> what I can tell, ABS hasn't shortened my braking at all--totally the
>> opposite--but worse, I don't feel I've gained any additional steering
>> control or other advantage in return. What are we getting for this
>> expensive option, other than unpredictability?
>>
>> Unsatisfied with the unfulfilled promise of ABS.
>> Alex Avery
>>
>>
>>
>> At 09:30 AM 6/7/01 -0400, Chris Saulnier wrote:
>> >I'm not a big ABS fan either, I can see where a full modern ABS system
>would
>> >be a great driving aid, but the training of how to use it is so
>lacking...
>> >Personally I prefer to control brake lock with my foot, and not give it
>to
>> >electrons. Heheheh, can you imagine a Lucas ABS system? I'd never
drive
>> >that puppy!!!
>> >
>> >Anyhow, here is what the State of Maine discovered after ABS systems
>started
>> >to be prevalent. The number of single vehicle "off the highway and into
>the
>> >trees" accidents started to rise dramatically. When they looked at the
>> >numbers, the majority of vehicles involved in these type of accidents
>were
>> >ABS equipped. Further study showed that most of the accidents involved
>> >evasive action, ie: coming up on an animal in the road at night. After
>some
>> >vehicle testing, it was found that nailing the brakes and swerving (to
>avoid
>> >an object in the road) at the same time caused the ABS systems to fully
>> >release the brakes. Apparently the physics of potential lock-up and
slip
>> >angles caused the system to not apply the brakes at all during the
swerve
>> >action. When the system recovered, the vehicle was headed off the
>pavement
>> >and into low traction surfaces (grass or loose dirt). Here, the system
>> >would modulated correctly, but due to the lowered surface friction the
>car
>> >would usually hit something before it stopped on the brakes. In this
>> >specific case, I would certainly prefer the non ABS system, to allow
>burning
>> >off speed on a high traction surface.
>> >
>> >Chris of Maine "one last post..."
>> >
>> >'71 wagon "junkbox" driver DR#5 (LZ22 :>)
>> >'72 4dr - project DR#6 (V8)
>> >'69 1600 Bluebird SSS 4dr 1/24 scale
>> >'70 Bluebird Coupe 30th Anniversary Edition 1/60 scale (thanks Lou!)
>> >
>> >> -----Original Message-----
>> >> From: Brian Hollands [mailto:bholland@hayes.ds.adp.com]
>> >> Sent: Wednesday, June 06, 2001 6:51 PM
>> >> To: Patrick P. Castronovo
>> >> Cc: Datsun Roadster Mailing list
>> >> Subject: RE: ABS
>> >>
>> >>
>> >> Some of the early ABS systems are easily fooled but newer
>> >> systems are more
>> >> sophisticated. The good ones will sense the speed at each
>> >> wheel and will
>> >> relieve pressure on that brake until the wheel begins to spin
>> >> again then add
>> >> pressure until it starts to lock and again release. They do this from
>> >> several to many times each second. So they keep the wheel
>> >> near its point of
>> >> lock up regardless of pedal pressure so that the stopping
>> >> distance will be
>> >> as short as the available traction will allow. One of the
>> >> problems that has
>> >> also occurred is related to driver training with the system. A police
>> >> officer was killed (If I remember correctly in a Caprice) due
>> >> to improper
>> >> training on ABS system use. The pedal will sort of vibrate as the ABS
>> >> system cycles between adding and relieving pressure from each
>> >> brake. This
>> >> PD had trained it's drivers with the old "pump the brakes" bit which,
>> >> especially with an ABS system only increases the stopping
>> >> distances. When
>> >> the driver felt the pedal vibrating under his foot he interpreted the
>> >> problem as wheel lock and released (began to pump) the pedal
>> >> ultimately
>> >> causing him to enter a corner too fast and lose control.
>> >> The pedal does feel weird when the ABS engages and that can be
>> >> disconcerting.
>> >> Brian
>> >>
>> >>
>> >> -----Original Message-----
>> >>
>> >>
>> >> I have heard some horror stories about the ABS Brakes. They
>> >> do not stop a
>> >> car on ice or sand or Gravel. Any loose soil that allows it
>> >> to slip and the
>> >> brakes release. Pat
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