Track day brake fade diagnosis?

[stopintime]

Is he using street pads?

He think that he does, but he can't remember for sure. He thinks they are the "friendly for a sinter" Ferodo ST street pads.
He will put on Brembo HH pads and see if they isolate better, reducing heat transfer (different material and more of it).

The lever gets soft when the system is hot enough, but regains all firmness when cooled off. That would mean the fluid hasn't reached it's boiling point, compromising it's quality, yes?

[Howie]

He think that he does, but he can't remember for sure. He thinks they are the "friendly for a sinter" Ferodo ST street pads.
He will put on Brembo HH pads and see if they isolate better, reducing heat transfer (different material and more of it).

The lever gets soft when the system is hot enough, but regains all firmness when cooled off. That would mean the fluid hasn't reached it's boiling point, compromising it's quality, yes?

No, once boiling stops lever firmness will return but I can't imagine you got the brakes hot enough to boil fresh 5.1 brake fluid.  I would flush it anyway though.

[ducpainter]

If those Brembo rotors are stainless I'd go with DP race pads or HH+ street pads. I use the race on the monster and the Street on the 996.

Never had any fade on either.

[Ddan]

If those Brembo rotors are stainless I'd go with DP race pads or HH+ street pads. I use the race on the monster and the Street on the 996.

Never had any fade on either.

Same pads I use, with the same result

[stopintime]

Alps fast downhill and a full track day done with new Brembo sinter HH pads.

There is still a little fade, but one click on the levers take care of it and then it doesn't get worse.

My conclusion so far: pad thickness matters + a little fade is normal and manageable.