Hello Bill, The so called "Viennese" action you have is most likely built by Stein or Walther . they look a lot like the same action. The principal is the same but there are differences. These actions have only 3 ( THREE ) moving parts IF you count the key. The key, the hammer / shank and the hopper ( jack). In my opinion they are the most dependable actions ever built The jack is sprang loaded and adjusts the let-off. Some have a screw ad- justment others you have to shim the jack out or in as needed. The shank is mounted on the metal " Kapsel " which is attached to the key. Some say it looks like a yoke. I would advise not to remove the Hammer / Shank from the Kapsel. The key depth is very shallow perhaps 1/4 in. and the key touch is very light maybe 25 - 28 grams. The re- petition is not very fast however it is faster than needed by most. The key bushings are the most likely to need any repair. they need to be ( sung ) in order for the hammer not to wobble while it is traveling to the string. If it is a Walther and you are having trouble replacing the action into the piano--- call me. 972 - 278 - 9312 while you are at the piano. There is a model of a Viennese Walther action in the Foundation Museum at the Home Office. . Regards, Jack Wyatt Dallas, -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://ptg.org/pipermail/pianotech.php/attachments/20100219/bf6e78b9/attachment-0001.htm>
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