Bill writes: >I agree that a good healthy blow will put the frame under pressure, >but if the BR doesn't have anywhere to go (because the glides are >contacting the bed), I have been wondering when somebody is going to mention the entrainment of the keybed? Once the glides are in contact, the action cannot move, UNLESS the keybed is not absolutely rigid. But we know the keybed isn't. This is easily seen by depressing the pedals under a very lightly bedded set of glides and observing them to lose contact with the keybed. So, the extra power and tone being ascribed to heavier loading on the glide buttons may possibly be a function of preload on the keybed? And the observed differences between makes of pianos may be more due to the differences between keybed strength than the flexibility of the balance rails?? Wondering, Ed Foote RPT www.uk-piano.org/edfoote/ www.uk-piano.org/edfoote/well_tempered_piano.html <A HREF="http://artists.mp3s.com/artists/399/six_degrees_of_tonality.html"> MP3.com: Six Degrees of Tonality</A>
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