In this article by Fly Staff for Fly RC Magazine, they describe what conventional fuel systems and unflow fuel systems are. They also discuss the conventional tank theory, pressure differential, fuel mass, the unflow theory of operation, why it is important to check a valve, tips for having a successful fuel system, and how to tune for maximum performance.
Control Line (CL) model aviation can trace its roots back to the early tethered experiments of Victor Tatin, whose compressed-air powered model was flown round-the-pole in 1879. In the 1920s and 1930s aeromodelers began to take this a step further and actually try and control their whip and powered aircraft in flight. Learn more here!