hosted on condor3913
 Mechanical Music Digest  Archives
You Are Not Logged In Login/Get New Account
Please Log In. Accounts are free!
Logged In users are granted additional features including a more current version of the Archives and a simplified process for submitting articles.
Home Archives Calendar Gallery Store Links Info
MMD > Archives > September 2001 > 2001.09.28 > 04Prev  Next


Player Piano Tracking Mechanisms
By John A. Tuttle

Hi All,  I believe there are at least five types of tracking systems:

  single hole
  double hole
  four hole
  single ear
  double ear

There is also a system that employs 'collapsing flanges' on the take-up
spool.  As the spool turns, the flanges move inward until they touch
the paper, keeping it aligned in the center of the spool.

However, I'd like to address a common problem with old rolls that
ultimately contributes to tracking problems.

When the left flange of the roll gets loose with age, the spring-loaded
chuck on the left wall of the spoolbox can easily push the flange into
the left edge of the paper, causing the paper to curl slightly.  During
rewind, as the paper tries to squeeze in between the flanges, either the
paper edges get curled or the roll rips.

This problem is easily solved by removing the left flange (on the roll)
and putting one wind of Scotch tape around the area where the flange
goes into the cardboard spool.  When you push the flange in, leave a
small amount of free air space between the flange and the paper
(1/16").  This allows for normal expansion of the paper during the
humid times of the year.  It also helps insure that the paper will not
be damaged during rewind.

Musically,

John A. Tuttle


(Message sent Thu 27 Sep 2001, 20:06:18 GMT, from time zone GMT-0400.)

Key Words in Subject:  Mechanisms, Piano, Player, Tracking

Home    Archives    Calendar    Gallery    Store    Links    Info   


Enter text below to search the MMD Website with Google



CONTACT FORM: Click HERE to write to the editor, or to post a message about Mechanical Musical Instruments to the MMD

Unless otherwise noted, all opinions are those of the individual authors and may not represent those of the editors. Compilation copyright 1995-2022 by Jody Kravitz.

Please read our Republication Policy before copying information from or creating links to this web site.

Click HERE to contact the webmaster regarding problems with the website.

Please support publication of the MMD by donating online

Pay via PayPal

No PayPal account required

                                     
Translate This Page