This sounds like it:
from: http://realbig.com/detomaso/1999-12/502.html
David, it sounds kind of like you're describing what the old-timers call a
"safety braker" (or is it "safety breaker"). It's *supposed* to help combat
lockup caused by out-of-round drums, warped rotors... anything that would
cause a pressure spike in the hydraulic system. People's opinions of these
devices vary (folks with drum brakes seem to like them more often), but the
inescapable truth is that they effectively soften your pedal.
Dick Sparta wrote:
> I was looking at an old race car that hadn't run since the 70's and saw a
>device in the front brake line. The owner told me it was called a "Safety
>Braker", that it was recommended by SCCA and that it worked like ABS.
>
> Can anyone shed any light on this? Are they useful still? If so, are they
>still made?
>
> Thanks,
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