TravisJB Journal

Zless@arizona

I'm too late! Did you thermocouple the calipers for heat readings, or did you experience rear brake failure/degradation during a race? My point: Do you need brake cooling at the rear?

You asked about aero properties of the scoop...
One can only get accurate/useful data from wind tunnel testing--not even you, travisjb, can afford one hour of wind tunnel session! Air-dynamics and water-dynamics behave similarly, and I have more experience with water. Bends, angles, and reduction in diameter cause turbulence/resistance. If your scoop and duct exited straight out of the rear deck, there would be little resistance. However, there will be at least one angle in your path to the rear rotors, thus, resistance. If you duct using curves rather than hard angles, the resistance will be less. The smoother the bore of the duct, the less the resistance.

The scoop dimensions appear to be about 1" x 6"--I believe that is a small obstruction relative to the frontal area used for the Cd calculation which I guess is about .35. What is your top speed at the fastest track, and what is the duration of that speed? What is the duration of speed above 80 mph? What is the relation of speed above 100 relative to the rest of the lap? Most aero equipment (includes ram-air) begins being effective at about 80 mph. Have you tested the lpm (litre per minute) of flow at any speed above 80?

My point of the above: Unless you spend a significant amout of time above 80 mph during a lap, and unless you have enough lpm of air reaching the rotors, the scoops might not have any effect.

Then again, you could just put 'em in and use empirical data to determine the duct effectiveness (lower lap times!)

The most important criteria that I have to offer is:
They look cool...so put 'em in!

Fathead: nice cage and scoops!

Travisjb will do 104! <=(subconscious suggestion)

R/S,
Greg!