[CAUT] damper touch weight - head-weight preference?

Jack Houweling jackhouweling at dccnet.com
Mon Dec 20 09:02:25 MST 2010


Thanks to everyone so far,


I have made myself a damper weighing jig and tested in on my grand
and found the damper weight very uneven. So how do you add the
weights? I have only heard of this and never seen it done. Do you take
 out damper put it in the drill press then glue in small lead weights? Where
in the head do they go and do you need 2 per head? Where and what kind
of weights do you use? What is the best glue?

Jack Houweling





> Thanks Rn,  I'll buy it, though I do wonder about the inertial effects of 
> having that weight at the end of that wire.  In theory, that 'compliance' 
> you speak of could be exacerbated (yea, I know) by the increased 
> resistance of the head weight. Also, in theory, the lateral oscillation of 
> the massified head could be perceived in the keystroke, as well as cause 
> accelerated wear of the guide rail bushings.  Theoretically.   But, in 
> fact, is anyone actually doing this, as a design feature?
>
> David Skolnik
> HOHNY
>
>
>
> At 09:46 AM 12/20/2010, you wrote:
>>On 12/20/2010 8:04 AM, David Skolnik wrote:
>>>Del -
>>>The reason is probably obvious, but the mind rebels. Why?
>>>David Skolnik
>>>Hastings on Hudson, NY
>>>
>>>
>>>At 09:06 PM 12/10/2010, you wrote:
>>>>And you'll find the dampers will work better with less overall weight
>>>>if you
>>>>put it all up in the damper heads and take it all out of the levers.
>>>>
>>>>ddf
>>
>>
>>A couple of reasons, short version. With the vertical excursion of the 
>>string, the bends in the wire provide some compliance that reduces the 
>>effectiveness of the weight in the under lever. Then, the horizontal 
>>component of the string excursion isn't served at all by the weighted 
>>under lever. Put the lead in the head (yea, I know), and the mass more 
>>efficiently couples to the strings.
>>
>>Ron N
>
> 



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