[pianotech] Humidity Question

Kent Swafford kswafford at gmail.com
Sun Jan 9 06:40:40 MST 2011


You are mixing your issues, aren't you? If these pianos are just a few months old, then they are right on schedule needing action regulation after an initial playing-in period. The pianos may need climate control, but it would be a mistake to blame all the action problems of new pianos on the change of seasons.

Kent Swafford


On Jan 8, 2011, at 8:27 PM, Steven Hopp wrote:

> Returning after the holiday break to a college I tech for I was surprised to find lots of action problems.  All pianos are new and are Steinways and Bostons.
> 
> The grands have screws which are loosening in wippen and hammer flanges.  Causing lots of clicking and clacking.  Loose enough to need an 1/8 of turn to retighten and cause some hammers to rub each other.  Also on one Boston grand hammers were blocking and very nearly blocking in tenor and treble sections.
> 
> A K-52 is experiencing bobbling hammers on every note and lost motion seems now to be excessive.
> 
> My question is:  Is our low humidity here in West Texas at about 20% RH on average and the practice room humidity hovering around 21% capable of causing such widespread fluctuation?
> 
> Is it expected with these new pianos that these regulation issues will come up until they have truly acclimated to this new environment?  They have only been here a few months.
> 
> For those of you who are Dammp Chaser installers and are experienced with the results, would installation of this system be a good idea given the dry climate?  
> 
> Thanks for the expert help.
> 
> Steven Hopp
> Midland, TX

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