I have a TRS-80 big floppy drive salvaged from my dad’s office long ago. Weighs about 5-6 lbs. Amazingly heavy castings for the chassis and motor.
There’s one around my mother’s house. somewhere.
The booger about those old things — and the thing that killed off the TRS-80 — was the shielding was nonexistent. If you switched the drive on or off with a disk in it, the resulting pulse in the fields around the power circuitry would nearly always ruin the data on the disk. The TRS-80, itself, exited the market because it wasn’t feasible to make the unit comply with FCC Rules regulating radio frequency emissions.
http://www.trs-80.org/why-was-the-model-i-discontinued/