Front rail punching change

[Roger Jolly]

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Hi Barbara,
                      Your problem is the height of the balance rail 
hole.   I will bet money it is in the 7 to 9mm range.
I needs to be reamed down to 4mm, before you do anything 
else.  Pianotech has a Balance rail hole reamer part#KCS-1B that will 
do the job. Keep your finger firmly on the bottom of the BR hole and 
ream until the tip of the reamer touches your finger tip.
This is the number one cause of slow repetition, and spongy feel.

The change of punching's will give a good improvement, after the 
holes are reamed to the correct height, but will be of little benefit 
if the holes are not reamed.

When the BR hole is too tall the walls of the hole starts to bind on 
the pin making after touch very ill defined.

This problem was corrected on my last visit to the plant.


Regards Roger Jolly
Technical Consultant
Samick Music Corp.




At 04:00 PM 2/7/2006, you wrote:
>Howdy all,
>
>Next week I'm going to regulate a nice little Samick console 
>piano.  The last time I tuned it (our first appointment), I noticed 
>and mentioned to the owner that the piano could really use some 
>attention.  The owner's son is a music major and she reported he had 
>never liked the touch of the piano.  I'm not sure if they bought it 
>new or used, but the regulation is pretty bad.  When I was there I 
>didn't think to check the firmness of the punchings (this is the 
>only Samick I've ever worked on, can you believe it?).  <Anyway> I 
>was wondering if anyone had changed out the front rail punchings 
>using Crescendo (Wurzen) punchings on a vertical piano?   I guess 
>I'll experiment to see what improvement can be had in an effort to 
>eke out a bit more performance.
>
>Comments?
>
>Barbara Richmond, RPT
>near Peoria, IL

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