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

End-of-Year Fundraising Drive In Progress. Please visit our home page to see this and other announcements:     Thank you. --Jody

MMD > Archives > November 2005 > 2005.11.10 > 08Prev  Next

Player Piano Motor Runs Backward
By Bob Taylor

Brian Chesters comments about his Ampico pump running backwards
reflects a mismatch of pump and motor.  Ampico pumps and motors turn
clockwise.  Duo-Art pumps and motors turn counter-clockwise.

If the mounting of the pump pulley was by some method other than screw
threads, it would not make any difference, but both system use screw
threads to mount the pump pulley on the shaft.  Ampico is right-hand
thread, Duo-Art is left hand thread.  Tuning the pump in the wrong
direction will result in the pulley unscrewing from the shaft.

Depending upon the type of motor, internal wiring changes can reverse
the direction.

Bob Taylor

(Message sent Thu 10 Nov 2005, 15:21:53 GMT, from time zone GMT-0600.)

Key Words in Subject:  Backward, Motor, Piano, Player, Runs

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 1995-2023 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

Please Support Publication of the MMD with your Generous Donation

Pay via PayPal

No PayPal account required

Translate This Page