trackdays - only thing i'm thinking of is the layout of the airfield. Donny & silverstone (edit: looks like croft too) certainly have far longer straights for cooling. less compound heat. Also seems 20-25min stints are on the long side, and got speaking to [email protected]
- said standing the car on it's nose is probably my problem with brakes. weird he's the only one saying that as from what i've read from various sources, hard as possible and being on the limit of ABS kicking in is where you want to be, but there's something i'm doing wrong so i'm all ears on solutions.
I've been giving this some thought;
I can't help but feel it's down to the length of your sessions; It might be worth cutting back to ten minute sessions for a day, then see how cooked the brakes are - If they're fine, up to 15 minutes. Reading around, 25 minutes does sound like a long session.
From a purely physical perspective, braking is conversion of kinetic into thermal energy - You'll need the same reduction in kinetic energy to take the corner safely, meaning the same amount of thermal energy; The only factor that plays into this is a longer, steadier brake will heat the brakes gradually, allowing them to cool off, whilst a hard brake dumps all of the heat into the brakes, then they must cool afterwards.
Shorter session times to cut down on latent heat, weight reduction to reduce kinetic energy, or brake ducts to increase the cooling efficiency would seem like the most cost effective / simple solutions before getting into the territory of BBK's and such.
Have you looked at options for expanding the stock brake ducts? Haven't looked at them in detail (Not having a CTR ) but looking at pictures, I'd have thought you could take them out and enlarge the central duct for increased airflow?
Just found a better picture. NVM!
Away from brakes for a moment, One thing that may be worth trying, reccomended by a local CTR Owner - Remove the fake arch vents, and cut them out so they are actually venting - With the removal of the side plastic trims in the engine bay, it provides an exhaust for hot air; As well as making the fake vents functional, which adds to cool points (In both ways!)
Crude diagram for you: