[pianotech] LANGER ACTION

Larry Fisher RPT larry_fisher at pdxtuner.com
Tue Jan 15 15:47:54 MST 2013


I tuned a Kimball studio with a Herrberger Brooks Langer action in it.  All went well except for the fact that this action had an additional spring to facilitate faster repetition.  During the tuning I had to adjust a few dozen or so to rid those notes of repetition failure.

There’s a brass colored spring consisting of an L shaped piece of wire .......  the long part of the wire is embedded in the back of the catcher, aimed downward about 45 degrees towards the long part of the jack.  On the jack is a piece of buckskin for which the short part of the spring’s L shape rides against during anytime but at rest.  It’s supposed to help push the jack back under the hammer butt ...  in addition to the traditional coil shaped jack spring  .........  also brass in color.  If adjusted too tight, it causes the jack to hang up on the buckskin of the hammer butt when returning.  This means the jack doesn’t get back under the butt for another blow.  Quite annoying when trying to tune.  I adjusted the spring down and to the right to lessen the force and that fixed the failure.

The hammer rail proudly labeled the action as a Langer whatever with a h. b. jack or something like that.  I just knew I should have taken a picture.  I got focused on visiting with a very pleasant artist type about my age instead.  Anyone have a clue what I’m talking about??    The action guys, not the girl ok??  
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