For small motors I've determined a way of making flat or square section drive bands so know the elongation characteristic of the band for a given cross-section , and the unstretched length for a requiremnent, but not the required tension in the band (originals missing) and hence calculated unstretched circumference. Is there a table of tension v band dimensions v motor type? eg size of motor and whether low speed ,say 3/4 inch diam pinion or high speed and 1/4 or so pinions. Or will I have to get inside a few cassette deck/vcr/vinyl decks , measure and construct a table.
-- Diverse Devices, Southampton, England electronic hints and repair briefs , schematics/manuals list on