Please have a look at the following movies on YouTube:
On the Red footage you will notice some vibration on the tilt-axis. This was because we only had a short time to test everything (the Libra had to go out for a shooting right after this test.)
and the Libra head was not completely tuned to the camera weight.
Of course this vibration can be eliminated with a proper tuning.
Setup about 1 hour with the proper rigging equipment, we measured a pulling force in the cable of approx. 700 kg.
Notice that the cable has an inclination of approx. 3 meters over a 30 meters length, so 10% inclination. Going up is possible to the highest point, the speed will be lower than going down (with gravity) of course.
Braking of the cable-cam can be very smooth or if needed/wanted very sudden, the Libra will compensate for the swing and keep the angle of the camera constant. When stopping suddenly there is still a swinging motion (the camera physically moves) so that cannot be stabilized as such, but the 2 side-arms will dampen this swinging motion in about 1 to 2 seconds..
I'm happy to give more info about prices and availability on request!