[pianotech] Self-tuning piano

[Paul McCloud]

Wim:
Apparently, the current is sent thru the bottom of the tuning pins, then through the wires, and grounded at the agraffes/capo bars.  Current through the wires heats them up and changes the pitch.  The tuning pins will heat slightly, but not enough to harm the block.  Practically, they won't heat at all since the pins are so large.
Paul McCloud
San Diego

----- Original Message -----
From: tnrwim at aol.com
To: pianotech at ptg.org
Sent: Thursday, January 26, 2012 9:48:49 AM
Subject: Re: [pianotech] Self-tuning piano

Let me see if I get this straight. The electrodes heat up the tuning pins which then heat the strings until the go in tune. Wouldn't the heat dry out the pin block? Do this enough time over a period of time, wouldn't the block eventually crack? Or at most, the fibers around the pin get dried out to where they woulnd't hold the pin any more? 



Wim 


-----Original Message----- 
From: David Skolnik <davidskolnik at optonline.net> 
To: pianotech <pianotech at ptg.org> 
Sent: Thu, Jan 26, 2012 5:16 am 
Subject: Re: [pianotech] Self-tuning piano 


One concern: Energy star rating 
One added functionality: prop up the rear leg by a few inches and turn on. Can be used as a slow-cook Forman grill. Still need to work out drainage and clean up. 

David Skolnik 



At 04:05 PM 1/25/2012, you wrote: 


Yo Mark, 
Electrified piano strings? Could help keep the bugs down. 

Hmmm... or at least keep cats off the strings? :-) 

Alan Eder 


-----Original Message----- 
From: Mark Schecter < mark at schecterpiano.com > 
To: pianotech < pianotech at ptg.org > 
Cc: pianotech < pianotech at ptg.org > 
Sent: Wed, Jan 25, 2012 7:12 am 
Subject: Re: [pianotech] Self-tuning piano 

If that unison is "perfectly in tune" I'll eat my hat. While that system may have potential, the demo should at least succeed in tuning the one demo note. Also, how many pianos have enough clearance under the block for the circuit boards? Clever idea, but I'm not worried. I'd rather spend my money on a self-parking car. 

Electrified piano strings? Could help keep the bugs down. 

~ Mark Schecter 

On Jan 25, 2012, at 11:31 AM, David Boyce < David at piano.plus.com > wrote: 



Erk! Is this the way forward? http://www.youtube.com/watch?v=ugAxXm2SAXw 

Best regards, 

David.