no hammer rise

[Dean May]

The let off rack is a little more qualitative. Is the hammer barely
brushing, touching softly, touching firmly? And you are trying to get them
all to the same place. The let off rack also requires a wider table.

 

The Spurlock jig is pretty quantitative. You can see how much the hammer
shanks lift off the rail, or just listen for the click. And it doesn't
require a wide flat table. Do it on the piano lid, or bench. I use a small
2x4 ft plastic fold up table from Sam's. No room for a letoff rack on it. 

 

I've used both. I feel much more confident and precise with the Spurlock jig
which is important to me since I started going for closer let off and drops.
It seems easier to use also. And I see more uniform results in the piano. 

 

Another caveat, though. If the section you are regulating has agraffes of
uneven heights this jig won't work well. You will need to set each hammer
individually in the piano. 

 

Dean

Dean May             cell 812.239.3359 

PianoRebuilders.com   812.235.5272 

Terre Haute IN  47802

 

  _____  

From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf
Of AlliedPianoCraft
Sent: Friday, June 13, 2008 9:49 AM
To: Pianotech List
Subject: Re: no hammer rise

 

Dean, I set my samples in the piano as you described below, then regulate
the let off and drop on my bench using a let-off rack. What is the advantage
of the Spurlock jig over a let-off rack?

 

Al Guecia

 

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