Took the hyper for a ride this AM with the new Brembo Corsa Corta 19mm master set at full race parameter settings.
The knob on the master body, labeled 1 in the attached pic, has 3 settings, normal, sport and race. It is supposed to allow adjusting the amount of slack from the initial pull of the lever. Normal has more slack, race has less.
If you are familiar with remote control vehicles, this seems to be similar to expo adjustment on a transmitter. See attached pic. Variability of dead zone before brake pads bite.
Expo hides deficient operator modulation from initiating a pull. No reason to be forced to have it, this master allows you to dial it out.
In race setting the initial pull provides brake bite feedback from the pads right away with the most miniscual lever pull.
The stock master has an initial dead zone that cannot be adjusted out. That mushy feeling, the need for a double pull or long pull before the pads react seems to be designed into the master on purpose. It is not designed for high performance riding, it is designed for the average rider IMHO. We are better than that.
In race setting that mushy phenomenon is gone.
This is very interesting because everyone blames the ABS system for the mushy feeling on initial pull, but it seems to be related to the design of the master.
Adjustment 3 in the pic below allows for 18 or 20 mm leverage settings.
The adjustment is to change the load point (master piston pin) between the fulcrum (pivot bolt) and the force applied to the lever and it changes the geometry of the lever pull.
At 18, the load (master pin) is closer to the fulcrum, so less force is needed to produce the same amount of power but you lose some modulation.
I like it a lot.
Some may find it too twitchy and having a firm feeling, but it is exactly what I was looking for.
I like to be able to build full brake pressure with little lever travel, and without too much force. This requires a fine touch. I don't need my lever to be mushy to prevent my misuse of the brakes.
With the slack gone, feedback comes through the tires to the bar into your hands giving you the information required to modulate the braking before the lever has moved much at all. Modulation is through adjusting finger pressure force, not travel.
With remote control electronics, this setting is similar to dual rates.
Some people like longer travel to help modulate pressure.
I will test that setting out tomorrow on 20. Load further from fulcrum, less power produced but greater modulation.
Adjustability is what you get with this unit. Great to be able to find what works for you.
Last edited by Pard; Jul 16th, 2019 at 7:07 am.