"Spin -- Two In" and ABS ...
05-29-2002, 12:58 AM
#1
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"Spin -- Two In" and ABS ...
.
or "Spin -- One In" with a Tip and ABS.
Anyway, this general rule insures that your spinning car follows a straight and predictable trajectory (even if spinning) until it's stopped. Failure to lock up the brakes often results in the car darting in an unpredictable direction (such as into a wall or traffic) once the wheels can regain traction.
So how does this work with ABS?
I've been told that if the car is spinning, ABS will allow lockup. If the wheelspeeds don't appear be "reasonable" for a car in normal motion, ABS doesn't have an adequate reference, and it will give up and allow lockup.
True?
or "Spin -- One In" with a Tip and ABS.
Anyway, this general rule insures that your spinning car follows a straight and predictable trajectory (even if spinning) until it's stopped. Failure to lock up the brakes often results in the car darting in an unpredictable direction (such as into a wall or traffic) once the wheels can regain traction.
So how does this work with ABS?
I've been told that if the car is spinning, ABS will allow lockup. If the wheelspeeds don't appear be "reasonable" for a car in normal motion, ABS doesn't have an adequate reference, and it will give up and allow lockup.
True?
05-29-2002, 05:42 AM
#2
Just looked at video of one of my spins in my S4...
...it was shot from a spectator's point of view. Unfortunately, it was a fairly low speed spin that involved less than 360 degrees of rotation. It did appear though, that ABS continued to function.
The other reason for putting both feet in with a manual transmission is to keep from damaging the motor which would still be connected to the wheels but for the clutch being in. I've heard of a couple of M3's at track events I was at spinning and reverse rotating their motors.
The other reason for putting both feet in with a manual transmission is to keep from damaging the motor which would still be connected to the wheels but for the clutch being in. I've heard of a couple of M3's at track events I was at spinning and reverse rotating their motors.
05-29-2002, 05:55 AM
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I guess it's obvious, ...
.
since I can't answer the question myself, that I'm not pushing my S8 hard enough at the ACCNA track events.
I assume in your case that you were max on the brakes?
Also, another reason for pushing in the clutch is to keep the motor running. Many race cars have a very small battery to save weight, and it's usually difficult to restart the car with a hot motor. Our Forumla Contintental doesn't even have an alternator; we really only expect the battery to power the ignition system, instruments, and a rain light; and we use a jumper battery to start the car on the grid.
since I can't answer the question myself, that I'm not pushing my S8 hard enough at the ACCNA track events.
I assume in your case that you were max on the brakes?
Also, another reason for pushing in the clutch is to keep the motor running. Many race cars have a very small battery to save weight, and it's usually difficult to restart the car with a hot motor. Our Forumla Contintental doesn't even have an alternator; we really only expect the battery to power the ignition system, instruments, and a rain light; and we use a jumper battery to start the car on the grid.
05-29-2002, 07:29 AM
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70mph spin....wheels always spinning, my fault though.
I should have done "two in" but I was young and stupid and didn't want to flatspot the tires (as opposed to hitting a wheel..duh) so I was partially on the gas/brake the whole time.
regards,
Liam<ul><li><a href="http://pages.infinit.net/veritech/A4/wipeout5.avi">you will need divx to see this</a></li></ul>
regards,
Liam<ul><li><a href="http://pages.infinit.net/veritech/A4/wipeout5.avi">you will need divx to see this</a></li></ul>
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