Hammer assist spring ?

[Delwin D Fandrich]

----- Original Message -----
From: "Ron Overs" <sec@overspianos.com.au>
To: "Pianotech" <pianotech@ptg.org>
Sent: June 06, 2003 9:41 PM
Subject: Re: Hammer assist spring ?


> >Why not a hammer assist spring instead of whippen assist spring ?
> >Conceptually, you could essentially effect the same SW seen from the
> >lower actions perspective for the whole action... which would allow for
> >identical key balancing for the entire action.
> >
>
> The first and most compelling reason for not fitting an assist spring
> to the hammer is that the hammer travels through a much larger arc of
> rotation than the wippen, which would cause any assistance given to
> reduce more dramatically as the hammer rotates around its centre.


Not to mention the fact that you really want the hammer/hammershank
assembly to bounce away from the string fairly rapidly. You don't want some
spring holding the thing up there.

Del