[pianotech] Weekend puzzler

[Delwin D Fandrich]

That's an interesting guess. I can see how this might well cause the problem
I found. But that wasn't it.

You are at something of a disadvantage here. There are two keys to unlocking
this particular puzzle. One is a familiarity with the precise configuration
of the mid- to late-1920s Chickering wippen. The other is some experience
with Pratt, Read parts of a few decades back. This company had only a casual
acquaintance with incidentals such as the precise specifications of various
action parts and an even more casual acquaintance with basic quality
control. In their experience as long as things like hammershank knuckles
were mostly glued to the shanks that was good enough. Their size and precise
location were both unimportant incidentals. 

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 John Delacour
Sent: Saturday, July 16, 2011 9:45 AM
To: pianotech at ptg.org
Subject: Re: [pianotech] Weekend puzzler

At 09:23 -0700 16/07/2011, Delwin D Fandrich wrote:

>Nope. But we're warming up.
>
>ddf
>
>>Gene Nelson
>>
>>Rep lever too low, jack too far under knuckle, knuckle fabric fibers 
>>resisting jack escapement?


How about the leather or cloth drop button on the repetition lever catching
on the inside of the hammer rail?

JD