Backcheck noise

[David Love]

I have gone through the same routine on these two pianos.  Did you try
another manufacturer's backchecks by chance?  Or even just drape the
backcheck with some bushing cloth or something to change the contact noise?
I'll be interested to hear what you find.  

 

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 DCrpt at comcast.net
Sent: Thursday, August 03, 2006 5:34 PM
To: Pianotech List
Subject: RE: Backcheck noise

 

       I have encountered a similar problem on two new Steinways here in the
Washington DC area.I talked to Kent Webb initially about this and we thought
it was bad backcheck buckskin.He sent me a new set of backchecks,and I
replaced one and checked it in the piano and the noise was still there.I
have already checked all the other causes for that kind sound(i.e. loose
knucle cores,loose hammer heads,even loose drop screws) Eric Schandall with
be visiting next week and we plan to take a look at one of these pianos,and
see if he can determine the cause of the problem.I will report back to the
list our findings.

 
Robin Olson RPT

-------------- Original message -------------- 
From: "David Love" <davidlovepianos at comcast.net> 

> Tails aren't rough (in fact I tried sanding them even smoother to no
avail) 
> and the radius seems correct in terms of the amount of tail in contact
with 
> the backcheck. This is not a hard checking problem, it's more an issue of 
> noise. 
> 
> 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 A440A at aol.com 
> Sent: Thursday, August 03, 2006 4:12 PM 
> To: pianotech at ptg.org 
> Subject: Re: Backcheck noise 
> 
> 
> << new Steinways recently with very loud hammer 
> tail to backcheck leather contact noise--especially audibl! e on a soft
blow. 
> The leather looks and feels relatively normal but the noise is definitely 
> bothersome. What is the likely cause and remedy. >> 
> 
> Tails too rough. I can get good checking when I leave them pretty smooth
on 
> 
> a radius is about 3" but it seems that factory hammers are often much 
> steeper 
> than that and depend on rough tails for checking security. 
> Sometimes, the new hammers don't have enough material left on the tail 
> to 
> correct the radius, . 
> Regards, 
> 
> Ed Foote RPT 
> http://www.uk-piano.org/edfoote/index.html 
> www.uk-piano.org/edfoote/well_tempered_piano.html 
> 
> 
> 
> 

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