Grand Regulation Compromises

[Delwin D Fandrich]

----- Original Message -----
From: "John Delacour" <JD@Pianomaker.co.uk>
To: <pianotech@ptg.org>
Sent: November 29, 2001 11:42 AM
Subject: Re: Grand Regulation Compromises


>
> How old are we Del??  No older than me, for sure, and off hand I can
> think of no grand piano since 1880 that will take a 9.5 mm touch with
> a 48 mm blow and get a clean escapement.  The only piano that has
> such a shallow touch is the Blüthner, which has a patent action and a
> recommended blow of 43 mm.
>

I'm sorry, did I say anything about a 48 mm hammer blow? Most U.S.
manufacturers were recommending a hammer blow of 45 mm in the 1960s and
1970s.

Del