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<font size=3>Hi Ric,<br>
Lets step back a tad. The action was OK before installation
of hammers shanks and bushings. Generally the friction should have
gone up wards a little. So there has been 3 significant
changes. 1. Hammer mass. 2. Knuckle size. 3.
Friction.<br>
<br>
As a fast rule of thumb check. If the blow distance, dip and after
touch is satisfactory. The tone is acceptable. (strike weight
issues vs tone is another discussion) Then hammer and shank
mass change is more than lightly been responsible for the change.<br>
Removal of some key leads is probably the best and fastest way to
go. Inertia goes down, and both down weight and up weight will go
up, resulting in better repitition and feel.<br>
<br>
If the action was not completely analysed before hanging the hammers, (so
we can compare the two sets of results.) It is just
speculation to try and figure what is going on.<br>
<br>
Now it would be helpful if Wim would reinstall some of the old hammers
and shanks, and give the comparitive figures.<br>
<br>
I have stirred the pot enough.<br>
<br>
Regards Roger<br>
<br>
<br>
<br>
<br>
At 09:32 AM 2/7/02 +0100, you wrote:<br>
>Vincent Earl Mrykalo wrote:<br>
><br>
>> Yes, I would follow the advice given to remove some weight from
the front of the<br>
>> keys. How much? Well, I would use 36 as the balance
weight<br>
>> (Upweight+Downweight divided by 2) as a guide as to how much
lead to get rid of.<br>
>> Of course, if you don't have much lead to begin with (a
possibility, but not<br>
>> likely) you should weight the hammers.<br>
><br>
>I think it unlikely that this piano was delivered from the factory
with 40 grams<br>
>down weight... which perhaps means at this point less then 30 grams
of balance<br>
>weight. Pulling leads out is something that in general I think
most of us find to<br>
>be a good thing, but we probably should be sure its the right thing
in each case.<br>
>Its not really such a difficult process to find out where the biggest
problems are<br>
>these days.<br>
><br>
>To put it over-simplified... its either leverage, friction, or that
something just<br>
>plain weighs too much or too little. Measureing UW and DW will
give you the<br>
>existing friction and touchweight numbers, but really not much more
specific<br>
>information then that. Its a simple matter to plug those numbers
along with a few SW<br>
>/ FW numbers and see which areas are causeing trouble and which angle
is the most<br>
>effective way to go about.<br>
><br>
>Whatever you do should be reverseble, unless you are darn sure you
want to go with<br>
>that in a longer term effort to improve the pianos touch IMHO.<br>
><br>
>Reasons why this should be so light ??... hammer filing, somebody
pulling the<br>
>staples, replacement hammers that were too light, (hows the sound of
this puppy eh<br>
>?) replacement of different dimension knuckles, somebody increased FW
(not<br>
>likely-grin). lots more...<br>
><br>
>This is a university piano. Lots of use... lots of wear and tear.
Unknown quality<br>
>concerning previous maintainance. I would look first to these as
potential causes<br>
>for too light touch, then to basic leverage /weight relationships (as
it is quick<br>
>and easy to do) and then make a decision what to do. Probably be
either add SW or<br>
>subtract FW... but I would'nt be suprised to find myself at least
adding some weight<br>
>to the hammers. This is a Steinway, and my experience tell me that
many many<br>
>pianists expect big sounds and a massy feel from them.<br>
><br>
>Just a few extra thoughts to stir the pot :)<br>
><br>
><br>
><br>
><br>
>--<br>
>Richard Brekne<br>
>RPT, N.P.T.F.<br>
>Bergen, Norway<br>
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