Dithering Hammers

[Keith Roberts]

Keydip. I think that's the one, Carman. It's the one that confuses me the
most. When letoff isn't working and it's checking to far away, Key dip
solves them both. I hate it when I mess with the checking only to adjust it
again after I get the dip right. Of course blow distance works in this
equation too. The first thing I look for is the hammer rail sagging. If the
blow distance isn't right, nothing else works right.
Keith Roberts
----- Original Message -----
From: "Carman Gentile" <cgpiano@humboldt1.com>
To: <pianotech@ptg.org>
Sent: Wednesday, April 02, 2003 9:21 PM
Subject: Dithering Hammers


>
>    Dithering or bobbling hammers can have several causes.  Here are my
> suggestions:
> Be sure there is no excess lost motion; decrease the checking distance to
> 1/2"; be sure you have enough key dip.
>    Maybe the hammer flanges are too loose -- if you have more than seven
> swings, use a larger pin.
> If the problem is throughout the action, reduce the hammer blow distance
> and regulate.
>    I would pursue these options before setting "let-off" or "set-off" to
> more than 1/8".
>
>
> _______________________________________________
> pianotech list info: https://www.moypiano.com/resources/#archives
>
>