Abstract: An improved speed governor is disclosed for feathering a plurality of blades on a windmill. Each blade is attached through a rotatable shaft to a support plate which in turn drives an output shaft. Each blade shaft is connected through a control rod to a governor hub which is free to slide axially on the output shaft. A spring biases the governor hub to a position wherein the blades assume a desired initial pitch. As the speed developed by the windmill increases, the force on the blades is applied through the control rods to move the governor hub against the spring. As the governor hub moves the control rods simultaneously and equally change the pitch of the blades to limit the maximum speed of the windmill.