Wheel Slip & Ground Sensors

[Squall]

I'm sorry for my ignorance, but what is this??

[Crucial_Xtreme]

I'm sorry for my ignorance, but what is this??

It's a pitot. )

http://en.wikipedia.org/wiki/Pitot_tube

[Squall]

Thank you, but it's on the car only for the test or definitely?

I'm sorry for my ignorance, but what is this??

It's a pitot. )

http://en.wikipedia.org/wiki/Pitot_tube

[hardingfv32]

I'm sorry for my ignorance, but what is this??

I believe you will find that it is a bulbous pod (keel on a sailboat) hanging from the nose. Houses a test instrument, possible ride height laser. Very common during testing.

Much bigger than a pitot tube.

Brian

[bhall]

I'm sorry for my ignorance, but what is this??

No need for any apologies. It's sensor that measures wheel-slip.

And what exactly is so 'no excuses' about the Ferrari?

The color. They've finally got the red just right.

[Squall]

Excuse me, is it a pitot tube or a wheel-slip??

[bhall]

Definitely wheel-slip. Pitot tubes are usually mounted on top of the roll-hoop camera or set in large, temporary arrays placed near the component being tested.

[Crucial_Xtreme]

Excuse me, is it a pitot tube or a wheel-slip??

Yes sorry I didn't see your arrow. I must be blind.

[Squall]

Ok thank you.
but it is so important to measure wheel-slip (at front wheels) during the test?

Definitely wheel-slip. Pitot tubes are usually mounted on top of the roll-hoop camera or set in large, temporary arrays placed near the component being tested.

[bhall]

It's absolutely important. The wheels (tires) are all that link the car to the track. For that reason, it's vital to understand how the tires are interacting with the pavement in response to driver input, set-up changes, new parts, etc.

[Squall]

Understand.
front wheels can slip during acceleration or only during braking?
This instrument is only on the car for the test?

It's absolutely important. The wheels (tires) are all that link the car to the track. For that reason, it's vital to understand how the tires are interacting with the pavement in response to driver input, set-up changes, new parts, etc.

[hardingfv32]

Wheel slip during cornering.

Brian

[bhall]

You'll see them on most cars in testing and on Fridays during race weekends.

[hardingfv32]

You'll see them on most cars in testing and on Fridays during race weekends.

Is a laser measuring the chassis movement relative to the ground?

Why not mount the instrument in the nose and have the data available all the times? Does the instrument need to be centered between the front wheels? If so could it be mounted in the chassis or is that too high?

Brian

[bhall]

You might be able to find some information here ( http://www.optimess.cn/?lan=1 ). That's the company who makes the sensors.