What are you using for Brake Pads for the track?
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09-30-2009, 12:31 AM | #392 (permalink) |
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The AP Racing BBK from Stillen comes with Mintex Extreme performance street pads. I'm planning to get more aggressive pads for my next event. AP Racing itself just released a new lineup of pads, so that's a possibility.
Welcome to the forum by the way ! Mesa huh ? |
10-01-2009, 01:14 AM | #394 (permalink) |
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Sweet!! looks good to me!!! will be even better with matte black / powder coating
I want lots of input on this... looks ? what do you think about the dimensions and impact on aero ? wondering if we should make it shorter... etc... jump in ! |
10-01-2009, 10:08 AM | #395 (permalink) |
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Personally, I dont really think that rear brake ducting will be needed necessarily. I think those scoops might be better used to cool a diff cooler. They are cool though.
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10-02-2009, 12:02 AM | #398 (permalink) |
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I think that came out extremely well done! I just dont know if the rears will need that much cooling. I guess I can agree for it to be for the diff. But an upgraded diff + heat sink fins should also be enough.
Either way - it looks very slick especially for being functional!
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10-02-2009, 12:23 AM | #399 (permalink) |
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thanks Danny...
okay Junior, let's move forward with them !... as I posted on NASA, let's use ~1/2 of driver's side to collect air for rear diff, given expected greater air flow on that side due to differences in planned window fairings |
10-02-2009, 01:36 AM | #400 (permalink) |
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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! |
10-02-2009, 10:44 AM | #401 (permalink) |
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Good post. I was thinking about maby running nascar brake fans to help move more air. Your right we will never know if they are really working well or at all. What about the string test thing? That is wind tunnelish right? After we put them on that could give us a clue as to what they are actualy doing.
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10-03-2009, 08:24 AM | #404 (permalink) |
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The car is getting epic. I love the cage, and I love all the choices so far. Thanks so much for keeping us all current.
But you're putting on scoops to solve a problem you don't have with no way of telling whether or not they even help? That makes no sense to me. I'm all for functional scoops, but it seems like you're putting the scoops first and the function second. To each his own, but since you asked, I vote no. Likewise with routing to the diff cooler - the question I would ask is: does it need additional cooling? If not, then all you're doing is screwing up the aerodynamics of the car and pumping air under the body from above, which is a total no-no. The air volume is probably too small to matter, but it just seems kind of silly in such an otherwise well-prepped car. |
10-03-2009, 01:32 PM | #405 (permalink) | |
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Strings and other high speed things...
Quote:
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