Grinnelle console inconsistancies

[Kenneth W. Burton]

	John,

	If you grasp the ends of the hammer rest rail and apply pressure
in opposite directions, it will accomplish the straighening which you
desire. Then of course, you will need to alter the shimming felts to allow
it to sit evenly on the action brackets.

	Ken Burton, "Doctor Piano" Calgary Alberta

On Wed, 15 Oct 1997, John R Fortiner wrote:

> 
> Dear List:
> 	I tuned the above mentioned PSO yesterday and found the action to
> be very badly out of regulation.  The PTG Action Handbook specified a
> hmr. bl. of 1 5/8".  I found this in the bass, but found the tenor and
> treble to be a little less than 1 3/8".  ( Those numbers are correct!!. 
> Looks like a bad hammer boring job to me.  Question---------  How can the
> entire action be set up so that the hmr. bl. is consistant through the
> piano.  The action has never been out of the piano since it was sold new
> and the hammers have NOT been filed.  The only solution I have come up
> with is to back off the hammer rest rail until the closest hammers are at
> 1 5/8"  and then "shim" those that are too far away forward with
> cardboard or felt placed behind the hammer rest felt that is currently in
> the piano.  Any thoughts????????  The let-off is also between 1/4"and
> 3/8" on the piano currently. Fortunately I can correct this easily.  Is
> this kind of lack of precision typical of this piano or had the guy that
> "regulated" this at the factory had a few too many???? To top all of this
> off the "book" calls for a key dip of 5/16".  The piano has a dip of 3/8
> +".  Just "for the fun of it" I set the dip, let-off, and back ck.
> distance for one note yesterday for the customer so she could feel and
> hear the difference.  Her response was, and I quote,"That's unbelievable
> - it feels so much better and gives so much more sound".  I had done this
> to a key whose hammer was about 1 3/8 from the wire with a let off of
> about 3/8 inches.  Thanks in advance for any input regarding this PSO.
> 
> 
>                                                                          
>         John Fortiner
>                                                                          
>          pianoserv440@juno.com
>