Hammer strike point

[Jim]

Hi Warren:

Strike point is not as important below notes 55 or so.  Usually the strike
ratio below that is 1/8 the string length from the Agraffe.  JIMRPT's
suggestion for the top part is excellent.  If you change very much in the
Bass or Tenor section, you will have hammers bearing to the left or right.
This could affect the wippen to knuckle alignment, so keeping a straight
line is probably more important than the cut and fit method in the lower
areas.  Sometimes, it is cheaper to put on a new set than to try to
straighten out a bungled job.

Jim Coleman, Sr.

On Sun, 9 Feb 1997, Warren Fisher wrote:

> Dear list,
>
> I just got an action from a small grand into the shop with a set of
> hammers which I understand were installed by a visually impaired tuner!
> The heads are installed in a very haphazard manner, to say the least!
> My question is: how do I check to see if he even got the strike point
> right?  I did this several years back, but I've misplaced my notes.  I
> seem to recall that it was 1/7th of the speaking length below the
> V-bar.  Is this correct and does it hold throughout the scale?  Any help
> will be greatly appreaciated.
>
> Warren
> --
> Warren D. Fisher
> fish@communique.net
> Registered Piano Technician
> Piano Technicians Guild
> New Orleans Chapter 701
>