Hammer Shank Flange Friction Question

[Stéphane Collin]

Hi Terry.

When fine tuning the friction of the hammer flange (i like exactly 5 swings, not 4 neither 6), on pins that are too tight, I first try to ease them by holding the flange's side tight on the bank, and swinging the shank for 180° while applying vertical pressure on it, then turning the flange upside down and redoing the same.  Depending on the condition of the bushing, I gain about two swings this way, without protek.

Stéphane Collin.


----- Original Message ----- 
From: "Farrell" <mfarrel2@tampabay.rr.com>
To: <pianotech@ptg.org>
Sent: Friday, July 11, 2003 11:44 PM
Subject: Hammer Shank Flange Friction Question


| I am going through a YC small grand action for a customer - new brackets, level keys, regulate, arc hammer tails, get friction in the right ball park, align hammers, etc. No concert pianists in this home (beginners only). The hammer shank flange friction is all over the place - some are OK (three to five swings), some are totally loose, and some are tight (one or two swings). My plan is to repin as needed, and use Protek on the tight ones if possible. I know many techs use Protek on hammer shank flanges. But if I put Protek on one of the tight flanges, the swings will go from one or two swings (too tight) to seven or nine swings (or more - too loose). I realize repinning will get me the right friction, but I am also trying to do this job as economically as possible for the owner. Is there some way to manage the Protek effect? Is there some way to utilize Protek on the tight flanges without making them so loose?
| 
| Terry Farrell
|   
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