Lost motion: (was puzzler on M & H BB

[Andrew and Rebeca Anderson]

Dittos,
That's the Steinway way, "winking the hammers"

Andrew Anderson
At 03:02 PM 9/25/2006, you wrote:
>  JD  writes:
>
><< Have you got the proper lost motion at the fly?  In other words does
>
>the cradle support the hammer very slightly above the jack?  This
>
>lost motion should be barely perceptible when you tap the key
>
>lightly, but you must have lost motion so that the fly can return
>
>under the roller without impediment. >>
>
>Greetings,
>    I have to respectfully disagree with this.  Grand piano actions work
>wonderfully with no lost motion, at all.  If there is any lost 
>motion, there will
>never be a straight hammer line as well as accelerated wear of the knuckle(
>from the impact of the jack hitting it rather than pushing it to start.
>     We were taught at North Bennett to set the balancier so that we could
>feel the jack scraping, ever so slightly, across the leather of the 
>knuckle when
>the hammer was at rest, and I have never had a problem with this causing loss
>of repetition.
>    Uprights are a different matter.
>Regards,
>
>Ed Foote RPT
>http://www.uk-piano.org/edfoote/index.html
>www.uk-piano.org/edfoote/well_tempered_piano.html
>