Has anyone the factory specs for the leather friction drive discs used
in Wurlitzer's band organ roll frames?  There is one on the duplex
drive and two on the single drive.  Of course I can measure the worn
discs and make the new a bit larger, as I have done in the past, but
with so much stuff floating around since the Internet I thought someone
might have a blueprint or some other authentic source.

Doug Hershberger