[DanEC]

What is the piston diameter of your master cylinder? That will probably provide more usefull information than just the throw.

For what it's worth, my ERA pedal arm appears to be about 10 inches from center of the bearing shaft to attachment to the pedal. It's difficult to get exact measurement installed. The other component is the arm length to the master cylinder pedal rod. I would have to get under the car to measure that. The pedal rests about 7 inches from the end of the foot box and the stroke to a hard pedal uses about half of that. Without brake fluid in the system my pedal would probably hit the end of the footbox also unless it hits the edge of the floor penetration first. I'm not sure that means anything. Also, unlike a clutch master cylinder, the brake master may have up to 1.4 inch max stroke but you will probably have a hard brake pedal at something much less than that. It would depend on your brake caliper components.