[pianotech] Capstan installation

[Delwin D Fandrich]

When you drill for the new capstans drill all the way through the key. Then
use a size-on-size pin on the table to index the key below whatever ram you
are using. To drive the capstans home use a bolt (or whatever) with a hole
just larger than the capstan--to facilitate quick locating--to keep the
capstan straight while driving it home. 

ddf

Delwin D Fandrich
Piano Design & Fabrication
6939 Foothill Court SW, Olympia, Washington 98512 USA
Phone  360.515.0119 — Cell  360.388.6525
del at fandrichpiano.com — ddfandrich at gmail.com


-----Original Message-----
From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf
Of Brown, David
Sent: Friday, September 28, 2012 10:30 AM
To: pianotech at ptg.org
Subject: [pianotech] Capstan installation

All-

Great question Ed . I am changing the subject to ask what methods are used
to install capstans after determining the proper placement? I have tried
various ways and have never been completely happy with the results .
Pressing them in with a drill press after drilling and chamfering the hole
worked best, but still difficult to keep things from leaning in different
directions in the soft keys.

DB


 Greetings,
    I think this would be a good time to hear from those that can
distinguish between actions with identical ratios, but different knuckle
distances, (which, of course, infers that the capstan placement is
different.)
  Is there a difference between an action with a low key ratio on a 16 mm
knuckle distance and one that has a higher key ratio on a 17 mm knuckle
distance?
regards,


David C. Brown RPT
Piano Technician
Division of Music
Meadows School of the Arts
Southern Methodist University
Dallas Texas 1-214-768-3976