NB sport brakes

[RS2000]

Ohh I think I have it figured out now with those numbers

A, is the knee point 427 (NA6) psi up to which where pressure is the same
B,maximum Psi?
B" is 597 which is what the rear is when the front brake is at 1000 psi

so that would mean the rear pressure on the NA6 would be about 60% of the front?

No, B1 is the rear pressure for B master cyl pressure. Look at the graph I have just posted.
Up to the knee point (569psi) the line is at 45 deg. & rear pressure = master cyl. pressure
The line after the knee point is straight, but at a lower angle. B is a nominal master cyl pressure, & B1 is the corresponding rear pressure. The ratio is the same for all pressures above the knee point.

[track_addict]

Here's a really crappy picture out of my FM book. Keith from FM has posted this on the American forums. If you do some good googling, you'll find a much clearer version of this graph and some excellent explanations.

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