@Okami asked me to tell more about the servo brake.
So id rather say ask what you want to know about it.
But short and simpy explained:
a very strong servo (in my case 30kg) is pushing on a hydraulic cylinder.
a bit more detailed:
the Servo has a gear instead of the lever/arm and is pushing a gear-rack against the cylinder
after i burnt the original servo of that arrangement i switched to a highvoltag/highttorque-servo (but a cheap one from turnigy) this thing runs with 2s and sucks up to 5A in full brake
the GT2B receiver i use is actually just rated until 6V but takes the 8,4V/5A(peaks) quite well until now.
you could buy super expensive Baja Magura Hydraulic cylinders witch are made for use with servos.
Or you just take apart and shape the original Magura Brake that comes with the Trampa.
I found out that the old HS33 are more steardy cause made out of Aluminium, the new ones are full plastic.
But as i said id like to make another Version where the Servo pulls the Brake Lever, on one side this adds some lever action and at the end brake strength and servo protection, on the other hand it easier adds the possibility to make a failsafe sling to pull in case of electronic failure.
@BruceLee from the German forum is planning to make a compareable thing for gravity MTBers
Ok thats it for now