Quick action lubrication:

[antares]

> From: BobDavis88@AOL.COM
> Reply-To: pianotech@ptg.org
> Date: Sun, 7 Apr 2002 15:58:07 EDT
> To: pianotech@ptg.org
> Subject: Re: Quick action lubrication:
> 
> Antares,
> How can the jack centers, repetition lever centers, and springs affect the
> down weight?
> Bob Davis

Hi Bob Davis,

Because they are all moving parts. Center pins move in their bushings and
springs move in their spring slots.
If all these moving parts move more easy (read faster, because of the
lessening of friction) the hammer movement will have less restriction and
will thus become less heavy.
The same thing with a car :
dope - all - moving parts with a super lubricant and the internal resistance
caused by all bearings will be less, and thus the car will go much faster.

Bob Davis

friendly greetings
from

Antares,

Amsterdam, Holland

"where music is, no harm can be"

visit my website at :  http://www.concertpianoservice.nl/