I’d like to add that what is possible to fit on any reel is not exactly the same as what manufacturers would put on a standard reel size. There is usually an extra quarter inch of protective reel flange. Afga also had 8” reels, I believe. Memory says they could hold an hour of 1 mil tape at 7.5IPS for radio programs such as Deutsche Welle, which I saw at KQED in around 1973. <L> Lou Judson Intuitive Audio 415-883-2689 On May 2, 2015, at 4:30 PM, Mint Records <[log in to unmask]> wrote: > Can anyone point me in the right direction. I'm trying to find out the > length of 1/4" tape possible on a 5.75" reel depending on thickness. > > I can find references for 5" and 7" reels but not 5.75" > > *I*'m trying to work out the possible lengths for a 5.75" reel for an > article I'm co-writing . > > My guess is roughly 1000 ft, 1500 ft & maybe 2000 ft depending on thickness > > Any ideas? > > Thanks > > Richard