A metallic sound from bridge pin/string?-Ric

[piannaman at aol.com]

 Ric,
 
By trial and error, I found out where the problem is: right at the front bridge pin.  Making it "get out, and stay out!" is the problem.  
 
Muting the front duplex was about the first thing I tried.  I leveled the strings as well.  As I said, the noise doesn't happen on the attack, it's an after-the-fact noise, slightly delayed from the initial envelope of sound.
 
Funny that you mention the tuning.  This particular piano seemed a bit more difficult to tune than the normal 185.  When I'd finished, I thought it was going to be a very good tuning, but it ended up being mediocre.  Moving target might be a good description.  I'm banking that it will settle down.  In an institutional setting like the one I'm assuming yours are in, these must be challenging to keep on top of.
 
But I like these pianos overall.  I think they have potential.  They do have voicing needs, though, don't they?
 
Dave Stahl


 
 
-----Original Message-----
From: ricbrek at broadpark.no
To: pianotech at ptg.org
Sent: Fri, 29 Sep 2006 10:40 AM
Subject: A metallic sound from bridge pin/string?


Hi David 
 
The Bohemia small grands I've run into all have lots of voicing issues... and tuning them is a lot of fun.... (moving target big time). I've come to suspect the capo termination/front duplex length as the culprit for most of the zings and zangs they make. The ones we have are a few years old now... but all have an insert for the actual termination. Looks to be some kind of bronze alloy. I've had to voice down quite a bit to get reasonable sound qualities from them. I'll have to take a pic of one and post it for everyones viewing pleasures. 
 
Anyways... along with everything else suggested... take a gander at the string leveling and the activity of the front duplex. Could be your problem is there. 
 
Cheers 
RicB 
 
Hi all, 
I serviced a new Bohemia 185 yesterday. There were many voicing and tuning issues, most of which were taken care of with tuning, some lifting, sand paper, a toothbrush (my new answer to a wire brish), and a small amount of needling. 
D#4, however, has a metallic after ring that I couldn't dispose of for any length of time. I was able to make it go away for brief periods by seating the string at the front bridge pin (pushing down, not whacking!). After about ten hammer blows, the sound would return. It seems that the string wants to return to the position from whence it came, the spot of the annoying noise. I tried to lightly tap the pin with a dowel, but to no avail. Might this be a situation where a tiny spot of CA might do the trick? 
I'd be most grateful for any suggestions. Dave Stahl 
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