Vertical backcheck noise?

[JCSwafford@aol.com]

---------------------- multipart/alternative attachment
In a message dated 2/27/03 9:22:42 PM Central Standard Time, 
dahechler@charter.net writes:


> >>>I came across a new one today, I think.  1983 Everett school model
> >>>studio piano.  While tuning I would hear a woody-sounding click on
> >>>nearly every note, very consistent, similar to the sound you get if a
> >>>jack tip lost its felt.  Nothing I checked seemed to diminish the sound
> >>>until I took a length of 1.0mm center pin bushing cloth and held it
> >>>where it would get sandwiched between the backcheck and the catcher when
> >>>the key was depressed.  That squelched the noise markedly.  The
> >>>backchecks have only 1/8" or 5/32" of felt, which is not all that
> >>>unusual, I guess, but it seemed pretty hard to me.
> >>>
> >>>So I think what I need to do is replace all the backchecks, but because
> >>>I've never run into this before, I'm asking if anyone has ever had to do
> >>>this on a piano only twenty years old.  Is this indeed the problem, or
> >>>does it just *appear* to be when it's actually something else?  Thanks!
> >>>
> >>>Regards,
> >>>Clyde
> >>>      
> >>>
> 

Hi,

I'll list 4 things that might have been overlooked that I've encountered on 
vertical pianos that may haven't been mentioned yet. Some very obvious (don't 
mean to insult your intelligence:))

1. Action screws loose
2. Screws to let-off rail posts are loose
3. Let-off posts in the action frame rail are loose
4. Backcheck wires are hitting let-off rail

I've been servicing school pianos for over 20 years and have yet to encounter 
the problem you describe, however this is always a first.

Joel Swafford

---------------------- multipart/alternative attachment
An HTML attachment was scrubbed...
URL: https://www.moypiano.com/ptg/pianotech.php/attachments/35/63/65/df/attachment.htm

---------------------- multipart/alternative attachment--