Some months ago I went to the LBS because the disc brake on the Nimbus 29" didn’t have any pressure. Whenever it lies down (like in the car) or occasionally stands upside down, so it is easier to place it in the house, the brake fluid leaks out. The LBS fixed it last time, but now it is the same problem again. I can see that the actual brake fluid comes out, because when I grab the uni I always end up having some on my hands. Aren’t those systems supposed to be air tight, or well leak proof, however I hold the unicycle?
Brake system : Tektro Auriga Sub A6061
Also I read about the bubble in the cable going to the opposite side of gravity, which could give more play in the brake handle, but in my mind I don’t see why the fluid would leak out over time. Then it is not a sealed system.