[suicideneil]

Not exactly. They shunt power though a solid-state resistor, so you get 3 step forwards, neutral, and 3 steps back speed wise. They are a nigthmare in truth, and using them at less than 'full throttle' burns up the resistor in next to no time (believe me on that one). You would be better off with a true variable resistor, like the adjustable dial on a plane esc for the flaps.