The number of steps per inch of tune #1 is very different from the steps
on tune #10.  On tune #10 those holes are really stretched out.  The
roll usually runs at an average tempo of 70.

Remember there is a lot of paper build-up on the take-up spool, so the
tempo may seem slow at tune #1, but by the time tune #10 comes along
things are really sped up.

While cutting your typical 10-tune coin piano rolls, the operator of the
perforator had to change gears on the machine at least three times, in
order for the roll advance distance to compensate for this paper build up.

Capital rolls have been the hardest to recut because their paper advance
does not match the Clark roll advance when you are using an ACME original
perforator.

Don Teach

 [ Don Rand uses Eddie Fryer's old Acme perforator, which Eddie had
 [ equipped with a variety of change-gears for this purpose.  -- Robbie