Abstract: A housing having a telescopingly extendible and retractable leg is carried by the frame of a motorcycle. A camming mechanism which drives the leg is secured to a reversible motor through a limited torque coupling whereby the extension of the leg is automatically terminated upon firm contact with the ground. Switching circuitry provides that the motor is manually actuated by the operator of the vehicle.

Abstract: A pulsating lighting signal for use on a motorcycle includes front and rear strobe lamps powered by a headlight strobe circuit and a taillight strobe circuit, respectively. The trigger signal from the headlight strobe circuit is coupled through a manual switch to the front strobe lamp and therefore may be rendered operational by the driver at will. The trigger signal generated by the taillight strobe circuit must pass through a clutch relay which will pass the signal when the clutch is engaged and a throttle limit switch which is closed when the throttle is closed. This throttle limit switch may also be bypassed by a manual switch at the driver's discretion. A clutch limit switch controls the clutch relay and is mounted on the vehicle's clutch linkage. Similarly, the throttle limit switch is mounted on the vehicle's throttle linkage. Finally, the trigger signal generated by the taillight strobe circuit is also applied to a brake relay, which has as an input thereof a signal from the vehicle's braking system.

Abstract: In a multi-carburetor engine system, a microswitch is provided for detecting when each of the carburetors begins the transition from the idle mode to the high speed mode in response to actuation of the vehicle's acceleration. The transition is marked by the microswitch closing which in turn causes a lamp to be lit. If each lamp associated with each carburetor does not light at substantially the same time, the carburetors are not synchronized and adjustments are required. A lockout circuit is provided for setting the period of time in which all lamps must light arbitrarily low.