Anyone know where to get Quick Disks (pre-recorded or not), Quick Disk Drive parts (belts, specifically), Quick Disk Drives, and/or a manual for this unit? I am collecting some vintage equipment and want to restore it to excellent working condition (I'm using a rubber band for a belt right now, works ok, but will probably break or stretch out of shape).
Thanks,
Dave

Roland discontinued QDs years ago. The same disks were also used by Smith-Corona QD Part # 61838
You may have a better chance of chasing down QD through a Smith-Corona typewriter dealer than finding the Roland QDs.

As for floppy drive belts I have found that VCR belts work perfectly if you can find one the right size.