Caster Cups

[Richard Moody]

Garret....
	Can you give a description of the caster cups?  I am thinking  of the
wide black plastic ones, not the small ones that are made for rugs.  

Richard Moody

----------
> From: Garret E. Traylor <garret@kdn0.attnet.or.jp>
> To: pianotech@ptg.org
> Subject: Re: Caster Cups
> Date: Tuesday, May 05, 1998 5:51 AM
> 
> A few years ago while I was in Washington D.C., our chapter invited
Heiner
> Sandwald (of Fazioli fame) to give a seminar at David Hughes shop in
Baltimore MD
> (Reisterstown actually). Caster Cups eventually became a topic of the
weekend long
> conversation.  Incidentally, Dave's shop has a concrete floor. And yes,
eventually
> caster cups were placed under the grand and we all definitely heard a
marked
> improvement to the sound of the piano.  What was generally agreed on as
an
> improvement in the quality of the sound was due to increased sustain.
> 
> Heiner described ... sound travels through all parts of the piano, in
the
> soundboard, the rim, hinges, keys, action, legs, everywhere.  A (good)
sustained
> sound in the piano is the result of sound being reflected again and
again
> throughout the piano until it finally dies out.  If you place your hand
on the leg
> of a piano you can feel the vibration travel down.  If that sound is
lost to the
> floor then the sustain time is reduced and the sound is therefore not
permitted to
> return back up the into the instrument.  If however, the sound is
permitted to
> return back into the piano then this is good.
> 
> Just a bit of my experience.
> Sincerely;
> Garret Traylor
> --
> --------------------------------------
> Garret Traylor
> Equal Temperament Services
> PSC 482 Box 14
> FPO, AP 96362-0014
> (Okinawa Japan, Kadena Air Force Base)
> Associate Member at Large
> Piano Technicians Guild
> Washington D.C. Alpha Chapter
> Web: http://www.EqualTemperament.com
> E-mail: traylorg@EqualTemperament.com
> E-mail: garret@kdn0.attnet.or.jp
> --------------------------------------
>