damper flange cords

[Howard S. Rosen]

Hi Les,

Thanks for your reply. I don't believe that  theory is correct, because
upon eximination of the remaining broken cord, it shows that the entire
cord has deteriorated. It falls apart like plastic elbows do. That tells me
that the entire cord has 'broken down' not merely the result of corrosion
in the center of the cord by a corrosive spring.


Howard S. Rosen, RPT
Boynton Beach, Florida



> On Sat, 17 Jan 1998, Howard S. Rosen  wrote:
> 
> > Hi List,
> > 
> > Since moving to Florida from New York 9 years ago, I have noted several
> > cases of torn hammer flange cords in Yamaha uprights ( Young Chang as
> > well). I have always assumed that our humid weather here is the
culprit.
> > Have any of you techs been faced with this? Do you agree that this
problem
> > is more prevalent in humid areas? Any thoughts?
> 
> We were dicussing this about a year ago. It was suggested that the
problem
> was caused by the hammer springs corroding in humid climates and that the
> corrosion was what was cutting through the flange cords. The recommenda-
> tion at the time was to gently clean the hammer springs with a metal
> polish and soft rag to remove the corrosion. Of course, I can't resist
> pointing out that this problem would never arise if the pianos in
question
> had used real hammer-spring rails in the first place!
> 
> Les Smith