Racing question i have never heard of before, It actually exists and is banned from F1! Options

[tazz9924]

So. I own a baja bug and a popular off road upgrade for it is a cutting/ turning brake. My question is why arnt these used in road racing as an alternative for left foot braking? this would direct braking force torwards the inside wheel(s) and may allow for faster and tighter cornering.

(Edit): I found that mclaren used a system similar to this in 97-98 in F1 and is a system currently employed in modern mclaren road cars. Instead of a grab handle it was a switchable 3rd pedal to the left of the brake pedal (they dont have clutches) Conservative estimates say it was good for .3 seconds a lap! It was banned from F1 on the grounds that it was a 4 wheel steering system. More info can be found here: http://www.motorsportmagazine.com/archive/...e-steer-mclaren

[JmuRiz]

Engineering Explained talked a bit about this today:

McLaren P1 has an open diff and uses brakes to modulate wheel torque and brake steer. Fancy computers at work, but it does work on an over 1000hp car with an open diff.

https://www.youtube.com/watch?v=gBHmWZcnWwM

[stugray]

Engineering Explained talked a bit about this today:

McLaren P1 has an open diff and uses brakes to modulate wheel torque and brake steer. Fancy computers at work, but it does work on an over 1000hp car with an open diff.

https://www.youtube.com/watch?v=gBHmWZcnWwM

This is what my $25k BRZ comes with standard.
It has:
traction control that retards timing to reduce engine torque when rear wheel spin is detected (both)
Vehicle stability control that can APPLY the brakes if it detects the car rotating at a rate that does not match the steering input.
ABS that releases brakes if lockup is detected
Electronic Diff that applies a rear brake if it detects rear wheel spin

Seems that the software could be modified to use rear brakes to help in turning.
All the hardware is there.