I was bench testing a modified Coinola roll frame I built for my
calliope, changing the gearing to slow the rewind.  I don't see the
need to rewind at light speed for my application.

Anyway, in testing the speed I adjusted the play tempo to about 65 to
get an idea of the actual speed at rewind.  My question is: was there
a standard tempo used to produce "A" rolls?

I thought it was 65 but I am not sure.  I know that the actual tempo
used to play the rolls is dependent on different factors (recut,
personal taste, etc., etc.) Just wondering if there was an industry
standard.

Steve Walker
Riverside, California.