Where were the ABS brakes?
#16
08-30-2011, 11:25 AM
There are many factors to consider. Even the rubber compound will affect whether or not it will screech, and if it does, how loudly.
FWIW, when i got into an accident a month ago the tires slid (no screech). If i only kept the pedal where it was the car would've stopped before hitting the next car. But, alas, i stepped further so ABS kicked in and the car felt like it went forward faster from inertia and the rapid pulse stops. It was a straight-line stop, completely dry 105 degree weather.
FWIW, when i got into an accident a month ago the tires slid (no screech). If i only kept the pedal where it was the car would've stopped before hitting the next car. But, alas, i stepped further so ABS kicked in and the car felt like it went forward faster from inertia and the rapid pulse stops. It was a straight-line stop, completely dry 105 degree weather.
#17
08-30-2011, 05:41 PM
The question is, should the tires screech when the ABS brakes are slammed.
Yes, rubber on pavement can and will scream, even if the ABS is engaging.
If you are questioning whether or not they are functioning, then the question of "did the brake pedal pulse under your foot" comes in. It should feel (and sound) like the brake pedal is ratcheting under your foot.
Most often, if there's something wrong with the system, your ABS light would be on.
I figure, if you didn't hit the guy, they're working.
Yes, rubber on pavement can and will scream, even if the ABS is engaging.
If you are questioning whether or not they are functioning, then the question of "did the brake pedal pulse under your foot" comes in. It should feel (and sound) like the brake pedal is ratcheting under your foot.
Most often, if there's something wrong with the system, your ABS light would be on.
I figure, if you didn't hit the guy, they're working.
#20
09-04-2011, 11:03 AM
i teach this stuff in performace driving classes..
abs brakes allow approx 5 % traction loss depending on the car...
they are primarly intended for you to be able to apple maxumum braking force
at impending lockup and to be also able to steer your way around an obsticle
rather than just trying to stop. In the sand or loose gravel... yes they may
cause longer braking distances. Locking up on these surfaces actually can
reduce braking distances due to the piling up of the sand or gravel in front
the tire...
in all cases though... tire condition and brake component condition is the chief
contributor to the efficiency of stopping the car.
we used to shut off the abs do demonstrate that it is possibe to learn and
practice threshold braking with out it.
the next trick is left foot braking
abs brakes allow approx 5 % traction loss depending on the car...
they are primarly intended for you to be able to apple maxumum braking force
at impending lockup and to be also able to steer your way around an obsticle
rather than just trying to stop. In the sand or loose gravel... yes they may
cause longer braking distances. Locking up on these surfaces actually can
reduce braking distances due to the piling up of the sand or gravel in front
the tire...
in all cases though... tire condition and brake component condition is the chief
contributor to the efficiency of stopping the car.
we used to shut off the abs do demonstrate that it is possibe to learn and
practice threshold braking with out it.
the next trick is left foot braking
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