On 15 May, 2008, at 23:04, cctalk-request at classiccmp.org wrote: I do, but my Ampex drives use analogue tape type spools rather than the later 'industry standard' ones. They are half inch but ten track not 7 or 9 and because of the smaller hole, with normal thickness tape they got 3200 feet on a spool rather than 2400 feet. The machine optionally used one inch or quarter inch analogue spools on different decks, and the one inch transports ran at 150 inches per second. Roger Holmes