Accu-just hitch pins and tuning stability

[Andrew and Rebeca Anderson]

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Del,
I've made myself a note to check that.  My impression is that the 
strings are at least 6mm probably more above the plate.

Sincerely,
Andrew
At 10:48 AM 8/22/2005, you wrote:
>How high do the strings ride on the hitches?
>
>One problem with this system is ease with which downbearing can be 
>set following plate setting. Workers tend to get careless knowing 
>downbearing can all be taken care of later on after stringing. If 
>this -- the plate setting -- is not done properly, and the strings 
>ride much more than 5 or 6 mm above the plate surface, there can be 
>quite a lot of torsional stress on the plate. Hence, more plate 
>flexing during a pitch raise.
>
>Ultimately, the system will stabilize but it might take an extra 
>tuning to get there.
>
>Del
>
>
>----------
>From: pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org] 
>On Behalf Of Andrew and Rebeca Anderson
>Sent: August 19, 2005 2:31 PM
>To: Pianotech
>Subject: Re: Accu-just hitch pins and tuning stability
>
>Ron,
>How long since the last tuning that it was 60 cents flat? The owner 
>didn't know.
>
>More likely, it was strings rendering through the bridge over time 
>after you had done the pitch raise and left the building.
>Yeah, but I work on other pianos that don't behave the same 
>way.  Vladan may have something on the pin-block fitting issue.
>It did tune up solid while I was there and going over a second time 
>everything was still within 1/2 cent with a 5cent correction in one 
>pass.  I'll look closely.  I've just noticed the same thing on a 
>number of Baldwin grands and am looking for common denominators.
>
>Andrew
>
>


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