Spinet Evaluation

[paulrevenkojones at aol.com]

 Tom:

Steve Jellen observed to me (not in that class), and I have always tended to think the same, that the return spring is mis-named and should be called perhaps a retention spring since it's greatest function seems to be to keep the hammer against the hammer rail and to reduce "bounce" of the hammer against the rail on return. It should be experimentally demonstrable that the spring does less to return the hammer than, say, the bridle strap (viz Jim Ellis), and particularly on a medium to hard blow. The spring may have a more experimentally demonstrable function on a soft blow where the bridle strap effect is less.

Paul


 


 

-----Original Message-----
From: Tom Driscoll <tomtuner at verizon.net>
To: Pianotech List <pianotech at ptg.org>
Sent: Fri, 1 Aug 2008 10:56 pm
Subject: Re: Spinet Evaluation
















Matthew,


??? You have had some good 
suggestions on your question.


As?to your ?"Wore out springs " guess my 
guess is you guessed wrong. Of course you could have investigated and flexed one 
of the springs with your finger to test or pulled a butt out and performed a 
swing test or gram resistance test. You also could have applied protek to? 
a butt flange which would have been revealing also.


???I think you might 
be?overemphasizing the importance of the hammer return spring 
.


The late great Steve Jellen demonstrated in class a 
conventional action model that worked with the hammer return spring removed 
.


In my opinion if the action centers are free the 
hammer will return to the rest rail no matter what condition the spring is 
in.


??? I hate the N.Y. Yankees (Sorry 
Mr. Bondi) but I will quote the great Yogi Berra again on this list. 



??? 


"You can observe a lot by looking "


??? 


?The answer to your question was right in 
front of you. Ask the piano with some basic observations and let it tell you 
where the problem lies.


?Matthew , I commend you for reaching out to 
this list for help.


I've been in the trade for longer than you've been 
alive and I can honestly say that I've learned more from this list in the last 
several years than from any other source .


??? Keep your eyes open jump in and 
figure it out.Ask away when you get stumped but in my opinion true learning 
comes from that moment when you observe,test ,experiment , fail, try 
again??,and figure it out.


Trust yourself Dude,


Best wishes,


Tom Driscoll RPT


?


?



  
Subject: Spinet Evaluation

  

    

?

    
I returned from the spinet evaluation. The elbows will?need to be 
    replaced.? And with the keys that do work, when you release your finger 
    from the key, the hammer only goes about half way back and you have to move 
    it with your hand to return it.? I am suspecting the hammer return 
    springs need replacing.? It didn't "feel" like tight flanges, and the 
    hammer springs are where they're suppose to be, but I guess they just are 
    wore out.

    
?

    
?

    
Thoughts?
Matthew


?


 

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