Quote:
Being an old United Airlines Gyro mechanic...here's why your bike leans when you torque the handlebars.
Torque-induced precession (gyroscopic precession) is the phenomenon in which the axis of a spinning object (e.g. a part of a gyroscope) "wobbles" when a torque is applied to it. The phenomenon is commonly seen in a spinning toy top, but all rotating objects can undergo precession. If the speed of the rotation and the magnitude of the torque are constant the axis will describe a cone, its movement at any instant being at right angles (90 deg) to the direction of the torque. In the case of a toy top, if the axis is not perfectly vertical the torque is applied by the force of gravity tending to tip it over.
The whole story...http://en.wikipedia.org/wiki/Image:G...on_256x256.png
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Ouch Bob! Now my head hurts :-[