[pianotech] Yamaha GH1 tenor instability

[Al Guecia/AlliedPianoCraft]

I second that........It makes you wonder how a company would tarnish their 
reputation by selling a piano like that!

Al G

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From: "Ron Nossaman" <rnossaman at cox.net>
Sent: Sunday, November 16, 2008 12:11 AM
To: <pianotech at ptg.org>
Subject: Re: [pianotech] Yamaha GH1 tenor instability

>
>> Has anyone else been as frustrated as I am trying to keep the tenor
>> octave of the Yamaha GH1 in tune?  Even if I pitch raise and
>> over-pull, by the end of the tuning, that section WILL NOT HOLD!   The
>> tuning pins are not loose in the block but I'm still thinking that my
>> next step might be to tap the tuning pins down into the pin block
>> along with tapping the strings down at their bearing points.  Any
>> suggestions?  Is this a structural problem with this model??
>
> It's a design, specifically a scaling problem. Don't drive tuning pins, 
> and don't seat strings. That won't improve a thing. This model isn't 
> tunable, and will remain untunable whatever you try as a field repair.
> Ron N
>
>