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 > June 2005 > 2005.06.30 > 14Prev  Next


Pouch Leather As Duo-Art Gasket Material
By John A. Tuttle

Hi All,  I have a slightly different take with regards to why Aeolian
used tan pneumatic leather between the deck and the striker pneumatics.

As Standard and other manufacturers discovered, the force presented
to the piano action by solid (or hard) linkage was relatively severe or
abrasive, so 'flexible fingers' were introduced.  Other manufacturers
accommodated the problem by increasing the thickness of the felt
padding between the strikers and the wippens.  Regardless of which
technique was used, it seems somewhat obvious that the 'snappiness'
of the pneumatic in conjunction with hard linkage was not desirable.
(Evidence other techniques like thick felt punchings, relatively thin
striker fingers, and 'soft' hinges.)

Those who have rebuilt the Duo-Art stack are aware that pneumatics,
which are 100% air-tight before being mounted, are not 100% air tight
after they are mounted because of the very slight amount of leakage
presented by the leather.  Also, the pneumatics are not 'stiff': they
have a slight amount of 'give', also because of the leather.  Together,
these two factors help reduce the 'snappiness' of the pneumatic, giving
it a more human touch without reducing the repetitive capability of the
pneumatic.

As others have conjectured, I too do not believe that Aeolian had and
eye on the future with regards to the usage of tan pneumatic leather
between the pneumatics and the tiers.  I strongly believe it was done
purely for aesthetic reasons: to improve the human nature of the
mechanism.

But don't get me wrong -- it pleases me to no end that Aeolian used
the leather, and I always replace it when I restore a Duo-Art stack.
Replicate the original to replicate original performance.

Musically,
John A Tuttle
Player-Care.com
Brick, New Jersey, USA


(Message sent Thu 30 Jun 2005, 02:24:37 GMT, from time zone GMT-0400.)

Key Words in Subject:  As, Duo-Art, Gasket, Leather, Material, Pouch

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