[CAUT] RE : Tight Balancier

[Marcel Carey]

Jim,

Now you've got me curious about this heating device. Could you explain
or is it still under patent. ;-)

Marcel

> -----Message d'origine-----
> De : caut-bounces at ptg.org [mailto:caut-bounces at ptg.org] De la 
> part de James Ellis
> Envoyé : 11 novembre 2006 15:43
> À : caut at ptg.org
> Objet : Re: [CAUT] Tight Balancier
> 
> 
> Marcel Carey is correct.  I saw that Kawai high-speed film 
> too, and it is possible to have a jack so loose, and cushion 
> felts so bouncy, that at just the right repetition speed the 
> jack will bounce and end up in exactly the wrong place at the 
> wrong time, causing repetition to fail.
> 
> On the other hand, not long ago I was filling in for another 
> technician, and I ended up tuning for two different concerts 
> in two different places on the same evening.  I had just 
> finished tuning one piano when I got a frantic call from the 
> manager of the other orchestra, which was having final 
> rehearsal before performance.  Several notes were failing to 
> play at all.  The other location was only 20 miles away, and 
> I got there ASAP.  The jacks were too tight.  The relative 
> humidity had increased, and the jacks got even tighter.  They 
> were failing to return at any speed.  A careful application 
> of shrinking solution followed by some heat from a neat 
> little device I had made that heats only the spots that need 
> to be heated, and all was well.  The pianist wanted me to do 
> a stand-by during performance.  I told her why I couldn't, 
> but I assured her that the problem was fixed, and she would 
> have no problem.
> 
> WARNING:  Do NOT try the heat thing on jack centers using a 
> heat gun, or you may cause the jack tenders to come loose.
> 
> Jim Ellis  
> 
>