Plugging and redrilling an action rail

[Fenton Murray]

Hi JD,
I just caught on this is an upright which makes it more difficult, my 
previous posts were assuming you were working on a grand. Sorry, sounds like 
your on the right track. Do post some photos, if possible, of your exercise.
Fenton
----- Original Message ----- 
From: "John Delacour" <JD at Pianomaker.co.uk>
To: "Pianotech List" <pianotech at ptg.org>
Sent: Tuesday, January 29, 2008 2:03 PM
Subject: Re: Plugging and redrilling an action rail


> At 14:19 -0600 29/1/08, Mike Spalding wrote:
>
>>I'm trying to picture the situation, but need more info.  How's the 
>>butt-to-jack alignment?  If it's good now, what will you do after moving 
>>the butts over?...
>
> Well I did say about 50 holes -- easily missed!, and that means that of 
> course I need to re-drill for the levers and the dampers too. It's not a 
> job you can just wade into.
>
>>   How about action height or shank length?  Coincidentally, your hammer 
>> position error tapers to zero over the same range that string angle 
>> tapers to zero.  Coincidence, or clue?  Got a photo?
>
> A pertinent question indeed, but to bring hammer 28 (steel) into line with 
> the string would necessitate a shank about 3" long, since the original 
> holes are to the left of where they should be and the strike line is OK.
>
> I'll take pictures in due course because it's an interesting exercise. 
> I'll also describe the process of fitting new shanks and hammers to an 
> upright using the factory method and also using my hammer jig, which dies 
> uprights as well as grands.
>
> JD
>
>
>