Heavy Hammers / High Ratio

[Richard Brekne]

---------------------- multipart/alternative attachment
DUH number two.  I mean come on guys... we all know downsides of heavy
hammers. If increased wear and tear is the best ya'll can do then I dont
see why more instruments dont employ them.... but thats not at all what
I was asking about.

RicB

Delwin D Fandrich wrote:

>
>
>      ----- Original Message -----
>      From: Erwinspiano@aol.com
>      To: pianotech@ptg.org
>      Sent: September 24, 2003 7:57 AM
>      Subject: Re: Heavy Hammers / High Ratio
>       In a message dated 9/24/2003 12:42:30 AM Pacific Daylight
>      Time, Richard.Brekne@grieg.uib.no writes:
>
>           Hi folks..
>
>           Been thinking about this  particular action
>           configuration a bit and have
>           a few questions swimming around in my mind.
>           Configuring an action such
>           that it has heavy hammers with a high ratio is
>           going to cause the need
>           for lots of counterbalancing... and quite often
>           ends up being in the
>           form of strong somewhat randomly regulated assist
>           springs. This
>           combination of high ratio, high hammermass, and
>           low key mass has on the
>           surface of it a couple interesting features. Its
>           essentially the only
>           way you can achieve high top action inertia
>           against low key inertia
>           while providing high hammer acceleration for key
>           acceleration.... which
>           further expands the ratio of hammer for key
>           inertia. It would also seem
>           to provide for the greatest change in required
>           finger force (ie
>           <<heaviness>>)  from ppp to fff  play.... and
>           perhaps thats not such a
>           bad thing ????
>
>           Assuming one took the time to do a bang up job of
>           evening out strike
>           weights and key leading... and real even assist
>           spring adjustments....
>           what are the downsides of this setup ?
>
>           RicB
>
>        Flat knuckels from high hammer weight?  Dale Increased
>      wear & tear on the hammershank action centers?    Del
>
--
Richard Brekne
RPT, N.P.T.F.
UiB, Bergen, Norway
mailto:rbrekne@broadpark.no
http://home.broadpark.no/~rbrekne/ricmain.html
http://www.hf.uib.no/grieg/personer/cv_RB.html


---------------------- multipart/alternative attachment
An HTML attachment was scrubbed...
URL: https://www.moypiano.com/ptg/pianotech.php/attachments/ce/32/24/00/attachment.htm

---------------------- multipart/alternative attachment--