Henry F. Miller fallboard problem

[Dean May]

My understanding (and this from the Young Chang technical rep several years
ago) is that the sole purpose of those screws is for factory work only, to
enable them to put the action in and out quickly to the right location. The
cheek blocks are supposed to locate the action in the field. Part of new
piano prep work should include turning those screws in to provide clearance
with the back of the keyframe. Otherwise binding can occur during una corda
operation. 

I'd recommend you check your cheek blocks.

Dean

Dean May             cell 812.239.3359 

PianoRebuilders.com   812.235.5272 

Terre Haute IN  47802

-----Original Message-----
From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf
Of John Formsma
Sent: Thursday, June 07, 2007 5:12 PM
To: Pianotech List
Subject: Re: Henry F. Miller fallboard problem

It turned out to be a pretty obvious solution. The real clue was the
backcheck hung on the sostenuto bracket.

Once the action was removed, you could see there were no adjusting
screws in the keyframe stop (a.k.a. dag). The keyframe had worked its
way back, causing the clacking of the sharps on the fallboard. With
screws in there now, and the keyframe in correct position, everything
is fine.

Duh, I should have seen that right away. Curse my non-mechanical,
artsy-fartsy brain. <G> It's learning, though.

JF

On 6/6/07, Phil Bondi <phil at philbondi.com> wrote:
> John, you mentioned everything except key height to fix the
> fall board problem..although I have never heard of seasonal
> changes in key height.
>
> Personally, I would check key height before moving the fall
> board..although I have never heard of seasonal changes to
> fall boards either. I may be off with both of those
> 'non-observations'.
>
> -Phil Bondi(Fl)
>
>
>