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[hotel21]

Maximum braking effect (or speed retardation) is achieved in that smallest instant immediately prior to brake wheel lockup.

ABS allows the mechanicals of the car to read when lockup occurs and momentarily release the brakes and thereafter reapply them, thus getting maximum braking effect for the maximum time available.

I know that reads like its teaching the lost art of egg sucking but, that said, if you could manually cadence brake whilst selecting wheel lockup independant of the other 3 (or pair, dependant on system fitted) then yes, ABS would not be required.

[Andy B]

...., new tech is expensive and in the case of abs when launched only fitted to the top spec motors  ....

Excluding Jensen's MAxaret based mechanical ABS ..... wasn't it a top range BMW?  :-/

as the cost comes down, it gets fitted to eveything else.

 ....

and the MK III Granda was the first mass produced car to be fitted with eletronic ABS across the range. - and it's now bloody expensive to try to sort out, £160 for a wheel sensor 

[albitz]

I dont think the Omega system is a particularily good one though tbh. It seems a bit crude/basic imo. :-/

[Andy B]

I dont think the Omega system is a particularily good one though tbh. It seems a bit crude/basic imo. :-/

why?  :-/

[TheBoy]

I dont think the Omega system is a particularily good one though tbh. It seems a bit crude/basic imo. :-/

Same Bosch 5.3 system fitted to most execs from that era

[albitz]

Well, for example, I was driving a 2004 Merc Viano recently - posh minibus, with leather/auto etc - and I was convinced that the ABS was more effective yet a lot less noticeable in operation on the icy surface than the Omega version.
I was also impressed with its autobox.
My old 1998 Cclass was different though. The ABS on that was totally unpredictable and random. Not sure if there was something wrong with it or just a shite design.

[cem_devecioglu]

I've never understood how stopping the brake pads from touching the brake disc improves braking?

I'd rather stamp on the brakes and know that I was getting 100% of the available braking force.

A.B.S. is for people who can't drive properly!

ABS utilizes the difference between kinetic and static friction coefficients which are different..

[sun glasses on]

this explains in more detail..
http://engineerography.com/2009/07/how-the-abs-works-its-the-static-and-kinetic-friction/

http://academic.greensboroday.org/~regesterj/potl/Mechanics/Friction/FrictionA.htm

[cem_devecioglu]

I dont think the Omega system is a particularily good one though tbh. It seems a bit crude/basic imo. :-/

not sure its crude or basic, but does the job..at least faster than my feet

[Mr Skrunts]

There have been times in this poor weather that I have felt that the ABS kicking in has been more or a hindrance than a help, would be interested in others thoughts....

Brought this up in annother thread a while ago, when hannu mikkola helped develpe the quatro for rallying, it was found it was best turned off in snow, the theory was that with the wheels locked up the snow would build a wedge under the tryes.  So they fitted a swtch to turn the ABS off, which is what I was askinf.

But not all cars, drivers and weather conditions are equal.  :-/

[Brikhead]

But not all...drivers...are equal.  :-/

Very true, if you all were as good as me then you would also realize that a.b.s. is for people who can't drive(!)
 

[TheBoy]

if you all were as good as me then you would also realize that a.b.s. is for people who can't drive(!)

As a rule, those people who reckon they can do better than a modern ABS system in a family car have egos far larger than their abilities IMHO

[Brikhead]

As a rule, those people who reckon they can do better than a modern ABS system in a family car have egos far larger than their abilities IMHO

There are exceptions...







(If I crash within the next 5 and a 1/2 minutes I hope you realize you will be to blame for 'cursing' me)

[hotel21]

Maximum braking effect (or speed retardation) is achieved in that smallest instant immediately prior to brake wheel lockup.

ABS allows the mechanicals of the car to read when lockup occurs and momentarily release the brakes and thereafter reapply them, thus getting maximum braking effect for the maximum time available.

.... if you could manually cadence brake whilst selecting wheel lockup independant of the other 3 (or pair, dependant on system fitted) then yes, ABS would not be required.

Brikhead - OK, you are wonderfull.   

How do you manage to brake each locking wheel independantly of the other from the drivers seat? Or be better than the highlit part above?  Let us mere mortals in on the secret....