OT Shivering comment was RE: Spring Time

[Paul T Williams]

What's it doing in MO?  We're sunny and near 70 in Lincoln! 




"Alan Barnard" <pianotuner at embarqmail.com> 
Sent by: pianotech-bounces at ptg.org
04/16/2008 11:21 AM
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OT Shivering comment was RE: Spring Time






Speaking of Springtime .... I sure hope Algore solves this global warming 
"problem" before we all freeze to death here in the Midwest.

Alan Barnard
Salem, MO

----- Original message ----------------------------------------
From: "Jon Page" <jonpage at comcast.net>
To: pianotech at ptg.org
Received: 4/16/2008 10:27:57 AM
Subject: Spring Time


>I finally received some phosphor-bronze spring wire: .022, .028, .032.

>I made a few springs by hand with a hinge pin mounted in a vise to form
>the coil but am interested in what is a suitable spring making tool. 
Possibly
>the one listed in the Schaff catalogue or someone's fabrication. Ideas? 
Pix??

>The springs I made are for a back action underlever assist.
>I made 16 of .032 for the lowest ones and 8 of .022 for the highest.

>The supplied springs (.026) always seemed a little strained on the lower
>end so I made springs with a heavier gage. I like to set the tension 
lighter
>at the high end of the spring section so as not to have a large weight 
change
>at the transition to non-assisted underlevers and the lighter gage allows
>for a firmer/positive positioning in the slot while offering less force.

>Also, I'll be making different wippen assist springs. The arm which 
attaches
>to the loop is too short and strained at rest. I've done some 
experimentation
>and found that a longer arm has a more fluid feel to it's affect and 
there is
>less of a tension change from rest to full key stroke. And according to
>Ron O, they need an extra coil.  I have a S&S M in the shop which I'll be
>needing a spring making tool to do just this.
>-- 

>Regards,

>Jon Page

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