[Vermonter]

That's her.

I am also intimately familiar with the N1 removing anything placed on top of it as well as wiring boards (still have a hand wrap tool).

How about tape drives running away. Can't remember the model

[NCjim]

2401s were the high-speed rewind models - big trouble when a reel came off the spindle during rewind. Also tended to occasionally dump vacuum in the tape columns which were used not only for normal forward/backward operations but also by medium-speed forward and backward spacing for tape-marks.

[Ichneumon]

How about tape drives running away. Can't remember the model

Someone developed a novelty program for one of the big "washing machine" disk drive units which would work the read/write heads in just the right rhythm to "walk" the unit around the floor from the vibration.