Hello, all. The above referenced ca. 1980s MIDI sequencers (termed
"Disk Composers" by Brother) all appear to use the same internal 3.5"
FDD. The spindle is belt rather than direct driven. I can't find any
specific belt info for these devices on line except for the FB-100
Brother drive which was intended for use with their line of knitting
machines. I have the MDI-30 and I think a 8.5" or 9" circumference flat
belt might work but if anyone can provide some additional detail it
would be most welcome. Thanks for your time and comment. Sincerely,
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J. B. Wood e-mail: