[pianotech] sluggish (was no subject)

[Gerald Groot]

Wurlitzer used to sell Silicone just for that purpose.  Don't know if they
still do or not.  At that time, they recommended mixing it with Naptha.  8:1
for sticking flanges.  8 parts naptha to 1 part Silicone.   I've used it for
years on Wurlitzers and have always had great success with it.  

 

From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf
Of Matthew Todd
Sent: Friday, June 05, 2009 9:46 PM
To: pianotech at ptg.org
Subject: Re: [pianotech] sluggish (was no subject)

 


Yes, your assumption was correct Keith.

TODD PIANO WORKS 
Matthew Todd, Piano Technician 
(979) 248-9578

http://www.toddpianoworks.com <http://www.toddpianoworks.com/> 



--- On Fri, 6/5/09, Keith McGavern <kam544 at allegiance.tv> wrote:


From: Keith McGavern <kam544 at allegiance.tv>
Subject: Re: [pianotech] sluggish (was no subject)
To: pianotech at ptg.org
Date: Friday, June 5, 2009, 11:59 PM


On Jun 5, 2009, at 6:30 PM, Matthew Todd wrote:

>  I then held the key and moved the backcheck, and it returned fine.

Matthew,

I assume in this test you were attempting to eliminate the wippen flange as
being the cause of the sluggishness.
You may have done this and didn't say it in your post, but you also need to
disconnect the bridle strap and hold the hammer assembly towards the strings
as well as holding the key to feel sluggishness in the wippen flange when
you lift it somewhat up and down.

Aside from this test, most likely you have a key weight problem, especially
if you do determine the flange centers and the key bushings are basically
free. It is not an uncommon situation in some Wurlitzer vertical pianos.
Also, nested bushings are very possible as the angle of the keyarm can be
quite severe in some of these pianos in the treble section.

Sincerely,

Keith

 



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