I am attempting to repair an O-roll Orchestrion built up from a Wurlitzer
Organette. It has miles of tubing, enabling the 61-note keyboard to play
the full range of the organ plus the Xylophone, with pedals to play the
percussion instruments.

The O-roll frame was manufactured by John Motoros and the entire unit
was built up in 1972 by Carty Piano of Redondo Beach, California. Unable
to use the instrument for lack of space in the last twenty years, I am
now getting into its restoration.

Due to a great deal of rodent damage to the tubing (a lot of it eaten
completely) I am unsure of the tubing layout from the tracker bar.
I found an O-roll scale and printed it some time back but it is very
difficult to read.

My question: is there published anywhere a description of the tracker
bar scale by numerically listing the function of each hole from left
to right, or vice versa?

My thanks and appreciation for any help.

Cecil Dover
Los Angeles
tel.: 1-323-662-3544
cdover@aol.com.geentroep [delete ".geentroep" to reply]

 [ See https://www.mmdigest.com/Gallery/Tech/Scales/Aroll01.htm 
 [ and https://www.mmdigest.com/Gallery/Tech/Scales/Aroll3.GIF 
 [ -- Robbie