Fun with brake temp paint

[TiGeo]

Had new rotors for the track event at VIR this weekend. What did the temp paint tell me? Somewhere between 860 and 1021 deg F. Blue turned light brown - that's the first color patch on the left so they were over 527, green turned white - next over working right to left so over 860. Orange stayed orange so didn't hit 1022. Likely in the 900 range which seems reasonable. Pads are rated to ~1500. You can see the brake duct on the LCA on the left side, front of car to left. Those rotors are 350x34mm directionally vaned.

 

[Jetronic]

That outside edge is always cooler than the centre of the surface, that centre area blues first. So you could be closer to 1500 than you'd expect.

 

[Rust_Belt_Pete]

I use that paint for catridge annealing