[Diy_efi] OT: ABS retrofit into older car...

Mos mos at sydney.net
Thu Dec 5 02:13:17 GMT 2002


(This is off topic, but nonetheless interesting).

I would've thought the front brakes are more prone to locking up first
upon a heavy stomp, as they have more braking power to start with, and the
front wheels are unloaded relative to when the car is actually slowing
down rapidly.

What does properly biased mean? The correct bias (in reference to the
force a tyre can hold) changes with deceleration magnitude, does it not?
If you bias for maximal deceleration, then the fronts will be overbiased
in slower deceleration, right? (And wont help you with stomping at all).

Mos.

-- 
84 AE86, 90 ST185GrpA, 91 MX83Gr, Sydney, Oz.

On Wed, 4 Dec 2002, Perry Harrington wrote:

> I wonder if he's referring to those delay valves used to delay the onset of
> rear brakes.  The stated purpose is to prevent rear brake lockup by preventing
> the high pressure surge when someone stomps the pedal in an emergency.
>
> Those devices are not neccessary if you have properly biased your brakes.
> That is the whole purpose of a bias valve, it limits pressure to the rear
> brakes so that the front brakes lockup first.


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