Re: [FWDLK] brake linings

[Ray Jones <hurst300@xxxxxxxxxxx>]

Hi All;
The front/rear bias on braking is usually 70% front. This is mostly due to
physics, the weight shifts forwand onto the front wheels and the harder the
braking, the more weight shifts. The rear wheels are not carrying their 50%
of the weight any more, and therefore don't have as mucxh traction. That is
why you have the bias block or f/r compensator. This regulated the brake
fluid or pressure going to the rear as a portion (%) of whats going to the
front. Note that many trucks have a variable compensator, as the truck may
be empty or loaded which changes the dynamics of the stop.

If the rear locks up well before the front, adjust the rear pressure down.
Ideally, you want to have some steerage in a panic situation (which is what
anti-lock brakes are all about), so the fronts still have to be rotating a
little while the rears are locking up in a panic stop. It's a fine balance
which needs some time spent on if your changing the type of brakes from
stock.

With brakes, bigger, better, faster, is always better, expesically if you're
behind me! If it's not a 1000 point car, safety is the best way to go.
Ray Jones

> From: paul holmgren <paulholm@xxxxxxxxxxxxx>
> Reply-To: paul holmgren <paulholm@xxxxxxxxxxxxx>
> Date: Tue, 4 Nov 2003 13:30:53 -0500
> To: L-FORWARDLOOK@xxxxxxxxxxxxx
> Subject: Re: [FWDLK] brake linings
>
> eastern sierra Adj Services wrote:
>
>> As I said, before , I would prefer to have discs, on a freeway
>> full-boogie stop, from above 70 mph. I've found that MOST 'stops' only
>> require a "slowing-down" , to some extent, to avoid a hazard.
>
>> How many of y'all have actually brought yer car's speed down to ZERO, in
>> a true panic STOP, @ highway speeds????
>
>> Neil
>
> 1976 Merc Gran Marquis 9 pass wagon, one big hummer of a wagon,
> 4 wheel Disks, Stop on a dime and give change.
> This had the ford 9" rear with a better front/rear ratio setup on brakes,
> could lock all 4 up.  I believe the key here was the fact that the rears
> shared more of the braking action then a lot of the other 4 wheel disk
> setups.
> With all the ones I have seen/owned/driven, I thought the braking action
> was shared better on that wagon then GM and Mopar.
>
> Most 4 wheel disk cars that I know of still allocated the majority of
> braking action to the front wheels. Or at least seemed to.
> I know on several vehicles that the rear pads lasted 3-4 times longer
> then the fronts. Looking at the wear factor, just how much
> braking was the rear doing????
> Whats the average wear factor ration on rear drum, front disk, 2-3 times???
>
>
>
> --
> Paul Holmgren
> Hoosier Corps #33, L-6
> 2 57 300-C's in Indy
>
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