Cooler brakes...

[rquintero]

Probably an ignorant question, but what is responsible for lowering the temp of the brake fluid?

I wouldn't think the air funneling to cool rotors & pads plays a role, so what does? Or is this just not an issue at the track?

Thanks for any insight.

[DocL]

Hi Ralph, you correctly answered your own question for the most part, but there are a few other parts to the equation. First, good air flow is the best way to cool the brakes, look at F1 and Indy cars with the ducting. Second, DOT 4 and 5 brake fluid has a higher boiling point which allows the fluid to resist boiling at a lower temperature, thus preventing air bubbles from getting in the lines and decreasing braking ability. Think of it like a SCUBA diver getting the BENDS. And third, track pads are better at withstanding heat and perform better hot, compared to OEM pads

For those reasons, I always flush out the brake fluid and refill with new fresh DOT 4 every time and change the pads before EVERY track event. This way I am confident that my brakes will work consistently each time.

Give me a call if you have any other questions or concerns.

-Rob

[This message has been edited by Dr.Lane (edited 15 December 2000).]

[rquintero]

Thanks Rob, again this is just idle curiosity - so what you are saying in essence is that the fluid dissipates heat mainly through the caliper/rotor/pads?

Must not be an issue else there'd be all types of aftermarket devices for this.

Ralph