Today, I realigned the transplanted heads of a floppy drive by hand, and it felt like a herculean thing to do; as well as an experience I hope to never repeat.
Now that I'm finished, I want to quantify what I've actually done.
From what I understand, a 1.44MB floppy disk is 80 tracks at 135 tpi (tracks per inch). 1 inch is 25.4mm, so is the width of a track
25.4 / 135 = 0.18mm?
How close do the heads need to be to properly be "aligned" with a track? And is there a degree of error or slop within the standard? How close to the center of the track does the head need to be for it to properly read it?