Abstract: A vehicle automatic clutch control comprising an engine speed sensor that produces a signal V.sub.1, an electrical reference signal generator that produces a signal V.sub.R and a comparator that processes the two signals V.sub.1 and V.sub.R to produce an error signal E. The error signal E is utilized for controlling a clutch actuator that operates the clutch to vary the state of engagement of the clutch to alter the engine speed and equalize the two signals V.sub.1 and V.sub.R and thus maintain a substantially constant engine speed until the clutch is fully engaged.

Abstract: A portable tire tool adapted for removing and installing tires. The tool includes a lever arm, tire pry arm, and J-shaped hook arm which may be connected in different configurations to provide various tools for removing and installing tires. The tool is conveniently shaped to allow assembly in a compact configuration for transportation and storage.