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Re: [Healeys] Rear breaks locking

To: <gmandas@yahoo.com>, <healeys@autox.team.net>
Subject: Re: [Healeys] Rear breaks locking
From: WILLIAM B LAWRENCE <ynotink@msn.com>
Date: Tue, 19 Oct 2010 05:10:32 +0000
Just my theory: The disc brakes on the front require a higher pedal pressure
to lock than the drum brakes on the rear. They have no self-servo action. That
is why there is a booster. They never needed a booster on the drum brake cars.
That is probably due to the self-servo action of the dual leading edge design
of the drum brakes. I say repair the booster and test the brakes again before
you take it on the highway.
All conventional brakes will lock under heavy braking. It's more a function of
the friction between the tire and the road. It's not ideal for stopping
distance, but it is normal under the influence of adrenaline. The best
scenario is that the front brakes lock first. If the rear brakes lock up the
rear tires lose traction and the car will swap ends.
Bill Lawrence

> Date: Sun, 17 Oct 2010 17:42:07 -0700
> From: gmandas@yahoo.com
> To: healeys@autox.team.net
> Subject: [Healeys] Rear breaks locking
>
> On my Sunday drive I had occasion to lock up the brakes. A person in the on
coming lane was in a hurry to turn left and since I wasn't tailgating it must
have appeared there was enough of a gap to shoot.  For anyone from
Connecticut, I was on RT-25 southbound at RT-136, in Stepney. Nuff said.
>
> The rear wheels locked and the fronts didn't. The brake booster on my BJ8
isn't working, so the brakes are functional but hard.  I'm figuring the lack
of a functional booster isn't a factor.
>
> Is this locking typical or do I have work to do?
>
> Greg
> 65BJ8
>
> Sent from my iPhone so please excuse typos and brevity.
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