A magnetic writer having an air bearing surface for confronting a surface of a rotating disc is disclosed. At least two of the tripod legs can be put together to form a height-adjustable, clampable supporting rod extending between two boundaries spaced apart from one another. This finding is implemented by adapting the path dynamics such that the TrLimaMaxrLim yielded by the prescribed dynamics limiting values is varied by reducing the maximum jerk to achieve good damping results for the lowest natural frequency of the participating axes. The timer provides a maximum amount of time that power may be applied to the motor, thereby preventing damage to the movable body portion in the event it becomes jammed while being moved by the motor.