[pianotech] BB Mason and Tenor Cross over

[Al Guecia/AlliedPianoCraft]

So, bottom line guys. The French piano maker Stephen Paulello "string with 
softer steel" isn't going to do much?

I don't do any scale redesigning and thought this might be an easy fix :-(

Al

--------------------------------------------------
From: "David Love" <davidlovepianos at comcast.net>
Sent: Sunday, December 20, 2009 1:19 PM
To: <pianotech at ptg.org>
Subject: Re: [pianotech] BB Mason and Tenor Cross over

> Right but with increased tension also comes an increase in the Z factor
> which also contributes to the tonal change which is, perhaps, a reason 
> that
> simply matching tension doesn't really work in that area.  You just get a
> loud honk.  I'm just wondering, do you actually hear BP% differences (I'm
> not convinced that you do) or, in this case, is the change in tensile
> strength manifested in some other factor that would balance out the 
> tension
> difference?
>
> David Love
> www.davidlovepianos.com
>
>
> -----Original Message-----
> From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On 
> Behalf
> Of Ron Nossaman
> Sent: Sunday, December 20, 2009 8:55 AM
> To: pianotech at ptg.org
> Subject: Re: [pianotech] BB Mason and Tenor Cross over
>
> David Love wrote:
>> Which begs the question, does the tone come from the relative BP% or the
>> relative tension.  Seems that even if you use a wire that has a  higher
>> BP% the tension is still too low to match the other notes in that
>> section.  On the B you go from about 160lbs to about 120 lbs at the 
>> break.
>
>
> Tension's easy, increase wire size. With low tensile strength
> re-bar you likely just trade one tonal problem for another,
> but hey, you might dislike the new problem less.
>
> The fact is that these pianos are just really bad scale
> designs, and aren't going to be "fixed" without moving
> bridges. Even then, doing it right would take you back to the
> drawing board.
>
> Ron N
>
>