[pianotech] Hammers or duplex?

[Ron Overs]

Jim,

Its Ron O. here, but I'll bite. Firstly, I concur with Ron N's posts 
on this topic over the past week.

Regarding duplex lengths and my preference, I approve of 25 mm, 30 is 
still OK but I'd prefer 25, 35 is getting towards a noise risk, and 
40 to 45 mm is guaranteed to create some screamers. The model A 185 
grand from a certain maker is a fine example of how 45 mm duplexes 
can scream in the first few notes of the capo section. As Ron N 
mentioned, uprights are almost always quiet even when the V bar shape 
is less than ideal and the hammers are worn and/or out of alignment.

When it comes to front duplex bars, there are few tools which are as 
useful as an angle grinder when rebuilding the 'modern' piano.

Ron O.

>Ron/David,
>>
>>The long front duplex lengths are the problem.
>Is it possible to define long and short duplex length
>
>Jim I
>
>
>--
>Jim Ialeggio
>grandpianosolutions.com
>978- 425-9026
>Shirley, MA


-- 
OVERS PIANOS - SYDNEY
    Grand Piano Manufacturers
_______________________

Web http://overspianos.com.au
mailto:ron at overspianos.com.au
_______________________