Tuesday, January 23, 2007

Under Pressure: What is the right amount of hydraulic pressure?



I was "bench racing" this weekend with a friend and I got in a discussion about brake line pressures at Daytona that is coming up this weekend. I did some research and found some information you can use on the street and track. I found this article in the BRAKE & FRONT END archive about this topic.
One the streets, the hydraulic pressures is around 300psi to 500 psi during light to normal. Panic stops start at about 600 psi and can spike to 1,500 psi to 2,000 psi at the front brakes, while the rears are limited to a preset pressure by a proportioning valve.

As the cars at Daytona slow down to make the turn onto the in field, it is tough to say what is their brake pressure. But, you can bet that the engineers have taken every measure to make sure that that pressure is not lost on flexing calipers or compressing brake pads.

The race looks like it will be a good one with a great mix of drivers from NASCAR, CART and IRL.

1 comment:

aliyaa said...

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