Whats the difference between Open and Closed hydraulic systems?
The difference here is simply that an open system has a brake fluid reservoir and a closed system doesn’t. The Hope C2 is the only closed system disc brake on the market. All other disc brakes have open systems which means they have a reservoir for oil expansion (due to heat) and oil supply (for automatic pad pad wear adjustment). The Hope C2 has a manual adjuster knob on the lever which adjusts a piston for fluid expansion and pad wear.
