A tenor bridge conversion

[Calin Tantareanu]

Hello Ron!

Did you change the soundboard or bleach it? About your new bridge: what
problem did the piano originally have, that you are trying to solve?
What are you going to do about the strike point where you installed the
tenor bridge? 
If you don't mind, I'll forward your message to the Bechstein Yahoogroup,
I'm sure people there would be interested in seeing this.

Regards,

Calin Tantareanu
http://calin.haos.ro
--------------------

> -----Original Message-----
> From: pianotech-bounces at ptg.org 
> [mailto:pianotech-bounces at ptg.org] On Behalf Of Ron Overs
> Sent: luni, 22 ianuarie 2007 01:53
> To: Pianotech List
> Subject: A tenor bridge conversion
> 
> Hi all,
> 
> I've just loaded a couple of images onto my webspace which show the 
> layout for a tenor bridge conversion of a Bechstein model C grand, 
> and an image of the new tenor bridge in place prior to stringing.
> 
> Here is an image link taken at the layout planning stage;
> 
> http://members.optusnet.com.au/ronovers/bech_c_tenor1.jpg
> 
> Here is an image link, taken last Friday which shows the finished 
> tenor bridge in place, awaiting strings.
> 
> http://members.optusnet.com.au/ronovers/bech_c_tenor2.jpg
> 
> The original Bechstein C (circ 1953) was one of the most outstanding 
> examples of a poor scale I've ever measured in a mid sized grand. The 
> tension dropped down to around 18% at note E20 (the lowest note on 
> the long bridge). To rectify this problem, a new tenor bridge was 
> designed from the first original trichord plain note, E20, up to note 
> D#31. The new lowest plain-strung trichord is at a respectable 
> tension of 36%. This will transform the model C from one of the worst 
> crosses in the business, improving it to the point where it is about 
> equivalent to the cross of a model D Steinway (in terms of percentage 
> of tension deviation - the lower the deviation the better the tuning 
> stability). Should have it strung and playing in a couple of weeks.
> 
> Ron O.
> 
> -- 
> OVERS PIANOS - SYDNEY
>     Grand Piano Manufacturers
> _______________________
> 
> Web http://overspianos.com.au
> mailto:ron at overspianos.com.au
> _______________________