changing hammer line

[Lance Lafargue]

Hi Leif.  I just preshaped the hammers in a clamp taking the cup shape out
of them.  Then I tried the end hammers of the offending sections by putting
the new hammer on, not glued, moving it up and down and sliding the action
in and out till I got optimum volume.  As in C-8, there are usually two
areas that are louder than other locations (you get soft/loud/soft/loud as
you slide it out).  By considering clearance, previous hammer line, and
listening closely, a "best" location will become evident.  After hanging the
hammers, shaping further and voicing the tone/volume got better and better.
It was not a big deal and the piano was greatly improved.  In the case of
the Bechstein, there was a passing problem in the high treble.  The
shoulders of the hammers needed to be taken down considerably to pass the
plate, but the shape ended up like the originals, etc.
Lance Lafargue, RPT
Mandeville, LA
New Orleans Chapter, PTG
lancelafargue@bellsouth.net
985.72P.IANO

-----Original Message-----
From: owner-caut@ptg.org [mailto:owner-caut@ptg.org]On Behalf Of Leif
Olsen
Sent: Friday, April 19, 2002 1:07 AM
To: CAUT
Subject: Re: changing hammer line


Hej Lance

On 18-Apr-02, Lance Lafargue wrote:

>  I had to move the strike point by as much as
> 1/8" inch in the upper tenor and lower treble.

Well done :-)


But can you give a hint of the answers to your questions:

>  ...I need to find or confirm optimum strike location (particularly in
> the lower treble section). What is the _best_ way to go about this?



I do a lot of rebuildings and would like to be more sure on this striking
point
matter beyond listening to the extreme trebles while manipulating the action
to and
fro.





Regards
--
Pianoshop Leif Olsen

Member Of D.P.I.F. Denmark

http://www.image.dk/~leifo