[pianotech] Worst Bass/Tenor Crossover in Universe

[Mike Spalding]

Thumpe,

Nothing wrong, and a lot right, with using West or similar on bridge 
tops.  I believe its primary benefit is to tightly link the pins to the 
cap, secondarily to seal the cap surface against moisture transport that 
might accelerate cracking.  I don't believe there's a need for surface 
lube on a bridge top - there's plenty of vibration to help strings move 
to equalize tension.

Mike

On 1/10/2013 8:04 AM, Euphonious Thumpe wrote:
> Does anyone here see a problem with using a penetrating epoxy, such as 
> West's, on an entire bridge in order to add some density for better 
> vibratory transmission, and impede cracking? If used, is there any top 
> surface lube that works better than others? (I've painted on McLube 
> molybdenum after scuffing the cap with fine sandpaper, and it seems to 
> work well.)
>
> Thumpe
>
>
> ------------------------------------------------------------------------
> *From: * Ron Nossaman <rnossaman at cox.net>;
> *To: * <pianotech at ptg.org>;
> *Subject: * Re: [pianotech] Worst Bass/Tenor Crossover in Universe
> *Sent: * Thu, Jan 10, 2013 12:05:55 PM
>
> On 1/10/2013 5:30 AM, Encore Pianos wrote:
>
> > To my ear,
> > it falls short of being an improved system over the best “traditional”
> > boards by a fair amount.
>
> The board can be driven into chaos at surprisingly moderate attack 
> levels everywhere in the scale. I've been told repeatedly by techs who 
> ought to know better that this is a feature necessary to good piano 
> sound, largely because mine can't.
>
> Adding bearing to these boards would improve nothing. They are just 
> not stiff enough.
>
>
> > That said, could the Stuart or Phoenix agraffe be installed on a
> > conventionally constructed board with compression, crown, and bearing
> > skillfully blended together and sound very good in the ways we want a
> > board to perform?  I believe so.
>
> It depends on how we want a board to perform, I think. In my 
> experience, there is very little resembling a consensus on what that 
> is. There is also the mass of the agraffes to deal with, which will 
> most certainly affect the performance. So tell me, what's so wrong 
> with the current bridge pinning and notching system, if done well, 
> that is inferior to agraffes?
> Ron N
>

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