Message-ID: <36482169.A3F79730@ar.com.au>
Date: Tue, 10 Nov 1998 22:20:09 +1100
From: Byron Forbes <hosh@ar.com.au>
Reply-To: hosh@ar.com.au
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Subject: Re: unreserved apology to Cossie
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This is probably because the ABS is setup conservatively ie so that wheel locking
braking power is no where near reached.
   The statement that a car can be stopped faster with locked wheels than otherwise
probably takes into account the average braking skill of the average motorist. And there
has been some talk of the heating effect that occurs under skidding which leads to better
grip, but I'm still very suspicious of this theory - I'd be very surprised if a heating,
skidding tyre could slow one down as well as someone who knew how to brake properly on
cold tyres. One thing's for sure - in racing applications, locking the brakes is a big no
no, and not just for flat spotting/overheating/tyre wear reasons. It's simply not as
efficient as keeping all four paws rolling!

Cossie wrote:
> 
> Try driving 2 different car (same kind, 1 with ABS and 1 without) at 30 mph,
> slam on the brakes. The one without ABS will stop better in the dry for
> sure..
> 
> In article <36471B48.ED594C77@ar.com.au>,
>         Byron Forbes <hosh@ar.com.au> wrote:
> 
> >You need to take back the appology and talk to someone who knows what they
> are talking
> >about. This defies the laws of Physics - Static and Kinetic friction!
> >
> >Lindsay Adams wrote:
> >>
> >> I have an apology to make (and a long running debate to sellte for a few
> >> people I suspect!!!)......
> >>
> >> a few weeks ago one of the threads here turned to braking, and braking
> >> distaces/ABS etc etc,
> >>
> >> Cossie wrote:
> >> >
> >> >Skidding will stop better in the dry
> >>
> >> to which I replied...
> >>
> >> "no it won't...... if it did ALL racers would blast up to a corner, lock
> the
> >> brakes - hey presto, no overtaking under braking and shortest braking
> >> distance...."
> >>
> >> ... as I find the whole car dynamics etc very interesting I spoke to a
> >> friend/physics specialist/Accident investigator..... and guess what its
> true
> >> shortest dry braking distance is with locked wheels. Completely
> uncontrolled
> >> of course but shortest..
> >>
> >> So.. sorry Cossie - please accept my unreserved apologies :-)
> >>
> >> cheers
> >>
> >> -Lindsay
> >
> >--
> > Byron Forbes
> > Captain of Team Lightning Bolt
> >
> > http://members.tripod.com/~HOSHUMUNGUS
> >
> >
> >    and
> >
> > http://www.frontiernet.net/~godsoe/bolt/home.htm
> 
> 

-- 
 Byron Forbes
 Captain of Team Lightning Bolt

 http://members.tripod.com/~HOSHUMUNGUS


    and

 http://www.frontiernet.net/~godsoe/bolt/home.htm
