[pianotech] Nuckljac -- anyone use this to set jacks to knuckles?

[Al Guecia/Allied PianoCraft]

Everything that Wim said. 

Your next door neighbor is not you, neither are the knuckles. Do it as Wim described, the traditional way to get it right.

Al -
High Point, NC



On Jun 27, 2012, at 2:30 PM, tnrwim at aol.com wrote:

This is the first time I've seen this tool demonstrated. It's a nifty little thing, but it doesn't do what it's supposed to do. All this does is line up the jack to the neighboring knuckle. It doesn't line up the jack to the knuckle of the same key. Not all knuckles are the same size, especially yon some older instruments.
 
I've found that the easiest way to line up the knuckle is to do it from the back of the action. Turn the action around so that you are standing in front of the hammers. Raise a couple of hammers to the right of the jack you want to adjust.  Lower the balancier of the wippen under the knuckle, so you can see the knuckle core and jack alignment. Reach around the front of the action to put the tool on the regulating button, and adjust the jack until it lines up with the knuckle.
 
Wim

 


-----Original Message-----
From: Nicholas Gravagne <ngravagne at gmail.com>
To: pianotech <pianotech at ptg.org>; caut <caut at ptg.org>
Sent: Wed, Jun 27, 2012 5:09 am
Subject: [pianotech] Nuckljac -- anyone use this to set jacks to knuckles?

List,

Nuckljac -- anyone use this to set jacks to knuckles? Pianotek sell this tool for $29.95 

http://www.pianoteksupply.com/product/2144/Nuckljac.aspx 

It is supposed to "simplify the task of aligning grand jacks. Simply adjust the jack until the small side wing of the tool meets the back of the adjacent knuckle core."

See in operation at YouTube http://www.youtube.com/watch?v=yiw-1EWyrAc

In any case, interested is what others do to for efficient wholesale alignment of jacks to knuckle cores. Contact me privately if you wish.

Thanks 

-- 
Nick Gravagne, RPT
AST Mechanical Engineering

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