Counter-bearing drag

[David Love]

Marring and tarnish won't affect tone but you can always shoot the brass
with brass lacquer to keep it shiny.  Most manufacturers who use brass
don't, though.  

David Love
davidlovepianos at comcast.net 
www.davidlovepianos.com

-----Original Message-----
From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf
Of Ron Nossaman
Sent: Wednesday, August 08, 2007 9:14 AM
To: Pianotech List
Subject: Re: Counter-bearing drag



> Ron:
> And how will the eventual marring and tarnish affect tone?

I don't know that it will, one way or the other.


> What concerns me is damage to the brass as a result of the string 
> compression that one finds on old pianos that use this system. This 
> includes brass aliquots that have even been plated. What if the string 
> spacing needs to be refined?  

Refine string spacing after how many years of being where it 
is? Has this really been a problem in older pianos with half 
round or oval counter bearing bars? I can't say it has been 
for me, but then different locations have different realities.


>What happens to the profile of our 
> termination? 

What profile? My counter bearings don't define a speaking 
segment, so they don't get profiled. They get left at the 
radius of the rod they were cut from.


>Then again you see the same damage to the cast iron v-bars.

Yes we do, and at what tonal penalty?


> Uggg! Only questions, so few answers. :)

But we *can* ask more specific questions and examine the 
premises around which our questions are formed for validity. 
Ever read Ayn Rand? Whenever you are facing a contradiction, 
check your premises. One of them is wrong.

Ron N