Dampp-Chaser threads

[atonal@planet.eon.net]

> 
> atonal@planet.eon.net (Rob Kiddell) wrote:
> > Tuning pin tension remains fairly stable ie: tight, but I
> > don't attribute this to the Dampp-Chaser. I've worked with
> > enough Dampp-Chasers to know this isn't one of their attributes.
> 
> I sure find they make a difference in tuning pin torque in uprights.  And 
> D-C's new promotional video makes that claim unequivocally.
> 
> Tim Keenan


Hi Tim, 

	What kinds of pianos (new or used) and what types of conditions have 
you seen improvements in? I've installed Dampp-Chaser 5PS systems   
in brand new Baldwins (tight tight tight pins!) and newer Yamahas 
(not as tight, but smooth), as well as Wurlitzers, Petrofs, and some 
large, re-pinned turn-of-the-century rebuilt pianos (original 
soundboards). I also routinely tune and maintain similar pianos, 
newer and older, without Dampp-Chasers installed. I've yet to 
attribute increases in tuning pin torque to installation of the 
Dampp-Chaser. I don't find the DC equipped instruments 'tighter' 
overall, I find variances in tension between similar pianos, 
humidifier system or no.   Here in Edmonton, we are a fairly dry 
prairie climate, and new instruments tend to lose moisture quickly. 
Tuning, regulation, and tuning pin tension are all at the mercy of 
the dry climate.  Changes in tuning pin tension tend to happen 
quickly, if at all. Yet I stand by my original statement:  based on 
my experience installing and maintaining pianos and Dampp-Chasers, 
they work extremely well on soundboard stability, and little, if at 
all, on anything else. At least in this climate, anyway.  BIG NOTE: 
I'm not discounting other points of view here, I'm keen to hear 
what others are doing regarding DC installation and 
maintainence.....maybe I'm missing something?!?!  

Regards, 

Rob Kiddell, 
Registered Piano Technician, PTG
atonal@planet.eon.net