Spring Time

[Paul McCloud]

Hi, Jon:
	I have the spring tool and it works great.  Takes a little time to get the
hang of it.  Have fun!  Where did you get the spring wire from?
	Paul

Paul McCloud
Service Technician for PianoSD.com
www.pianoservsd.com 
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> [Original Message]
> From: Jon Page <jonpage at comcast.net>
> To: <pianotech at ptg.org>
> Date: 04/16/2008 8:27:59 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