Before I screwed up my perforators paper guide system for the
umpteenth time, I cut a 6-and-one-half-minute long tune and then
spooled it onto a normal set of 2-inch diameter flanges.

Has anyone gotten more than 5 minutes onto a standard flanged roll?
I mastered the MIDI file to over 50 punches per inch but notes seem
to repeat well enough; at least it sounded fine on my Conway (which
is really sluggish to repeat). Here's the video of said roll:

https://youtu.be/SlTgEIDvxk0
 

I imagine that I could probably get 15 minutes onto an XP flanged
Roll, or more if the tunes were slower, and probably close to half
an hour on the massive Jumbo flanges Ampico used later on.

Piotr Barcz
Upstate New York