Counterbearing angle

[Overs Pianos]

David,

David replied;

>. . .   I am interested in hearing more about your duplex 
>modifications using carbon steel and formulas for repositioning. 
>Will you be publishing something after Reno?

Yes, including a formula for calculating the duplex length options.

The piano at Reno will have our setup, with hardened profiled and 
height adjusted front duplex system installed.

It will also have a tuned rear duplex system, similar to the Steinway 
D illustrated on the home page of our website (except the hitch pin 
positioning on our own piano will follow the block locations - the 
Steinway D looks a bit all over the place regards the hitch 
positioning, since we were stuck with the OEM positions).

A better image, on our site, for seeing the rear tuned duplex block 
system in detail, is  at;

http://www.overspianos.com.au/testa.html

You'll notice that the rear duplex system on the D has individual 
blocks, allowing for the blocks to be positioned so that they can be 
tuned, and stay in tuned (I have found that it takes about six months 
for commercial service pianos, to get the blocks absolutely in the 
correct position - then the piano seems to 'bloom') The tricky bit is 
working out wether its the piano tone 'blooming', or just a figment 
of my imagination. We may never know - but then again?

Fazioli uses the same system in all his pianos. I know there's a lot 
of debate out there about the perceived merits of the tuned rear 
duplex, but I still think the idea 'may have legs yet'.

Regards,

Ron O
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Website:  http://www.overspianos.com.au
Email:      mailto:ron@overspianos.com.au
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