Weighing off an action

[Greg Newell]

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David,
         Thanks for responding.

Greg Newell


At 04:56 PM 5/12/2003, you wrote:

>I weigh off with the stack on, strike weights smoothed, the action
>regulated and lubricated.  Measure up and down weights.  Figure out
>friction and balance weight for each note.  Adjust front weight leading for
>each note to get even balance weight.  One gram off the front weight will
>increase the balance weight by 1 gram.  You need a platform for weighing
>such as David Stanwood makes and a gram scale.  Make all the balance
>weights the same and maintain as uniform a leading pattern as possible with
>respect to front to back placement.  Address high and low friction values.
>Works very neatly.
>
>David Love
>davidlovepianos@earthlink.net
>
>
> > [Original Message]
> > From: Greg Newell <gnewell@ameritech.net>
> > To: <MPT@philbondi.com>; Pianotech <pianotech@ptg.org>
> > Date: 5/12/2003 10:33:08 AM
> > Subject: Weighing off an action
> >
> > Greetings listees,
> >          I'd like to ask if the method that everyone uses to weigh off
>an=3D20
> > action is done with the stack in place or not.
> >          I've just finished an action from a "D" that I first
>encountered=3D20
> > with jiffy leads screwed on underneath the keys. This was, I presume,
>to=3D20
> > alleviate a touch that was too heavy. This was, of course, unsuccessful
>and=3D
> > =3D20
> > the individual leads were placed in such a way that about half of=
 them=3D20
> > clicked or knocked on the key frame. After some mental debate I decided
>to=3D
> > =3D20
> > replace all action parts in favor of the Renner Turbo Wippen and=3D20
> > appropriate shanks with "blues" etc. While going through the=
 procedure=3D20
> > during a marathon action day yesterday it was necessary to remove
>and/or=3D20
> > change some leads in the keys. After a thorough mental debate I decided
>to=3D
> > =3D20
> > place an appropriate gram weight in the small hollow on the key just
>before=3D
> > =3D20
> > the back checks of the weight I desired and then remove, add, change,=3D=
20
> > whatever was necessary to allow a slow drop of the key at the=
 backcheck=3D20
> > end. I changed weight about every 6 keys or so starting from about 38
>grams=3D
> > =3D20
> > or so in the bass and lightening the load by roughly 2 grams each=
 change.
> >          This seems like it's contrary to what most folks do when
>weighing=3D
> > =3D20
> > off an action as I suppose that the method is to gauge the rate of fall
>at=3D
> > =3D20
> > the front of the key and not the back. Since I had the stack off
>initially=3D
> > =3D20
> > I found it a great deal easier and faster to leave it off. The end
>result,=3D
> > =3D20
> > I must say, is quite good indeed. The graduation from top to bottom is
>so=3D20
> > smooth! By the time it came to regulate the wippen support spring the=3D=
20
> > procedure was effortless. After a rough regulation and adjustment of
>the=3D20
> > wippen springs the feel is still a very smooth and gradual progression.
> >          I suppose that one of the reasons this worked so well is the=3D=
20
> > consistency of the Renner parts. Has anyone else ever done it this way?
>Are=3D
> > =3D20
> > there any potential pitfalls anyone can see with this method? I
>attempted=3D20
> > to concentrate any of the leads I added close to the balance rail=
 when=3D20
> > possible. I can't believe that the touch was ever very good as what I=3D=
20
> > encountered was very inconsistent. I will do final installations /=3D20
> > tweakings at the piano tomorrow. If there's any change in the=
 perceived=3D20
> > quality of feel I'll let you know but for now at least, I'm quite=
 happy=3D20
> > with the results.
> >          Looking forward to your comments!
> >
> >
> > Greg Newell
> > Greg's piano Fort=3DE9
> > mailto:gnewell@ameritech.net=3D20
>
>
>
>_______________________________________________
>pianotech list info: https://www.moypiano.com/resources/#archives

Greg Newell
Greg's piano Fort=E9
mailto:gnewell@ameritech.net=20

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