1999 Steinway L with heavy action

[David Love]

Mark:

Go to this site and look at the way the SW is taken.  I have a suspicion
that the  way you did it recorded a SW of at least 1 gram lower than it
actually is.  By adding a gram to the SW it lowers the SBR to somewhere in
the 5.7 - 5.8 range, which makes more sense given the numbers you have
provided.  Retake the SW's using that method and see what you get.  In
order to achieve a smooth SW curve, you will need a reliable way of taking
the measurement.

www.stanwoodpiano.com/SW-HWstandards3.pdf

David Love
davidlovepianos@earthlink.net


> [Original Message]
> From: Mark Davidson <mark.davidson@mindspring.com>
> To: Pianotech <pianotech@ptg.org>
> Date: 6/7/2003 4:36:03 PM
> Subject: Re: 1999 Steinway L with heavy action
>
> Hmm.  I had the tail up, not down, but the other end was resting on the
> flange, not knuckle.
> Shank level. I see the tail should be down, but weightwise should be the
> same, no?
>
> I have a good gram scale, although I don't have all the jigs Stanwood
> recommends.
> I used a stack of cassette boxes and playing cards to make the flange end
> level.
>
> I did notice a strange tendency that if I gave a hammer a little sideways
> push while
> it was resting on the scale it seems to introduce some tension that the
> scale recorded
> as weight (up to half a gram).  So I lowered the hammer onto the scale
> several
> times and took the lowest number I could get consistently.
>
> I think the strikeweight numbers and frontweight numbers are definitely
> usable.
>
> I just rechecked the key dip - I had only checked 3 or four notes in the
> middle of the piano
> previously.  It is set to .38"/9.7mm at the ends of the keyboard and is
> deeper in the middle.
>
> I realize this doesn't make sense, since high ratio implies less blow
needed
> for a given
> key dip, and blow isn't that great.  Again, I only checked one note for
> blow.
>
> I think it's probably a regulation issue that is causing the curve in the
> strikeweight line.
> Perhaps I need to re-regulate and remeasure DW/UW.  I'll definitely look
> into it further.
>
> -Mark
>
>
>
> ----- Original Message -----
> From: "David Love" <davidlovepianos@earthlink.net>
> To: "Pianotech" <pianotech@ptg.org>; "Mark Davidson"
> <mark.davidson@mindspring.com>
> Sent: Saturday, June 07, 2003 7:06 PM
> Subject: Re: 1999 Steinway L with heavy action
>
>
> > Mark:
> >
> > How did you measure the strike weights?  The flange needs to be turned
90
> > degrees to the shank (pointing up) and balanced on the end of the birds
> eye
> > with the tail of the hammer on the scale.  Did you, by chance, balance
the
> > shank on the knuckle and the hammer tail?
> >
> > David Love
> > davidlovepianos@earthlink.net
> >
>
> _______________________________________________
> pianotech list info: https://www.moypiano.com/resources/#archives