[CAUT] Original SD-10 Key Height

[denisikeler at aol.com]

What's the magic line look like?

Denis Ikeler

-----Original Message-----
From: Ed Sutton <ed440 at mindspring.com>
To: caut at ptg.org
Sent: Tue, Jul 7, 2009 6:08 am
Subject: Re: [CAUT] Original SD-10 Key Height


Bob-?
?
Check the front rail pins. Are they very low in the front key mortises??
?
Ed S.?
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----- Original Message ----- From: "Bob Hull" <hullfam5 at yahoo.com>?
To: <caut at ptg.org>?
Sent: Tuesday, July 07, 2009 1:30 AM?
Subject: Re: [CAUT] Original SD-10 Key Height?
?
>?
> So far, without getting some serious investigative time in this, it seems > like trying to lower the key ht. complicates everything else. My > assistant has been doing the work and I've not spent any serious time on > it. We have thought about replacing the key pins if there are any longer > ones. Some of them are actually below the top of the key. thanks for your > thoughts and the others who've chimed in.?
>?
> Bob?
>?
>?
> ----- Original Message ----?
> From: Fred Sturm <fssturm at unm.edu>?
> To: caut at ptg.org?
> Sent: Monday, July 6, 2009 10:20:32 PM?
> Subject: Re: [CAUT] Original SD-10 Key Height?
>?
> Back to this original question, and the reason for wanting to know the > original spec: balance pins too low in the mortises. I assume the tops are > not (or not all) protruding? I guess my own response would be to address > the pins, not fool around with adjusting everything around where they > happen to be. Lowering key height enough to make the tops of the pins > protrude seems like a heck of a lot of lowering. What does that do to > other issues, like having enough dip, relationship of keytops with > fallboard, actually having punchings under the balance holes to be able to > level the keys??
> In any case, why not just raise the pins a bit (pry or drive them up a > couple mm)? Maybe somebody pounded them down for some reason. Or replace > with longer ones if that is necessary. Or if "almost buried" just means > borderline, the curved part is just over the tops of the bushings, leave > well enough alone.?
> Regards,?
> Fred Sturm?
> University of New Mexico?
> fssturm at unm.edu?
>?
>?
>?
> On Jul 4, 2009, at 12:56 PM, Bob Hull wrote:?
>?
>>?
>> Rebuilding the action of an SD 10 and it appears that someone has already >> been monkeying with this one. The balance rail pins are almost buried in >> the mortise. The key ht. on the old action is 2 3/4" to the underside of >> the keytop. Does someone know what the original specs were? The piano >> action handbook says 2 9/16" for Baldwin concert grand but I didn't know >> if the SD10 would be different than a generic older Baldwin concert >> grand.?
>>?
>> Also, original specs for hammer blow and dip if you know. I'll make my >> adjustments from there.?
>>?
>>?
>> Thanks.?
>>?
>> Bob?
>>?
>>?
>>?
>?
>?
> ?

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