Ric: The steep angles you refer to could be a problem if not engineered properly. David Steinbuhler has a patented system for the keys in the bass. In the treble the lower hammer weight makes this easier to solve. Underneath the keysticks are straighter arms that take a less severe angle thus keeping the side play at the balance rail pin to a minimum. It's difficult to describe but you can see it well at http://www.steinbuhler.com/Craftsmanship.html I've been dealing with these actions here for several years. I'd frankly like to get his action stack put on all our Steinways! The only part in his action that he gets from Steinway is the sostenuto bar. Everything else he makes himself. dave -----Original Message----- From: pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org] On Behalf Of Richard Brekne Sent: Wednesday, January 05, 2005 1:56 AM To: Pianotech Subject: Re: Una Corda Adjustments and Christian Zimmermann Been watching this thread with some interest. I've never seen one of these, and actually was not aware of its existance. After looking at the action I was stunned to see the angles in the keys needed to get this to work. Personally, I have no doubt that pianists can adapt to whatever width standard is out there. So long as there is a consistancy in step height one will seldom stumble it is said. But I have to wonder about (without this meaning any negative prejudice) these horrific looking key angles, and how that affects action performance over time. I wonder if any of you with experience out there could speak to that. As far as the artist temporarilly installing such an action for every piano he gives a concert on.... I have to immediatly wonder about voicing issues. The soul impediment must be because he's used to the width of the octave. I cant believe the end response is going to be the same from instrument to instrument. Cheers RicB Horace Greeley wrote: > >> Our piano preparatory department is just now starting to do some >> experiments with younger students (Elementary age). We have 3 studio >> uprights with the 7/8 keyboards in addition to the grand actions. I'm >> looking forward to reading the research on this. >> >> So far, our experience with the 7/8 actions has been very positive. > > > This is great! I appreciate the response. Please do not hear my > obvious skepticism as total negativity. My own exposure to these > actions has (obviously) been limited. I look forward to hearing more! > > Best. > > Horace > > _______________________________________________ pianotech list info: https://www.moypiano.com/resources/#archives
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