[pianotech] 1098 Hammer Bore

[Encore Pianos]

Thanks Ron and Jurgen for your comments.

Will

-----Original Message-----
From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf
Of Ron Nossaman
Sent: Friday, February 15, 2013 12:54 PM
To: pianotech at ptg.org
Subject: Re: [pianotech] 1098 Hammer Bore

On 2/15/2013 11:12 AM, Jurgen Goering wrote:
> I sent this yesterday, but it is not showing up.  I will re-send at 
> the risk of having both posts appear... I apologize if they do.
>
>
> On any upright, the bore is never calculated as below. Otherwise, as 
> has been alluded, the hammer shank would be vertical when the hammer 
> meets the string. A ballpark hammer bore determination for an upright 
> would
> be: String to center pin distance less blow distance plus 5.5 mm (7/32").

Or, reproduce the rake angle in deviation from parallel of the shank to the
strings (with the hammer perpendicular to the string) and measure the
resulting bore distance.

Ron N