Bouncing hammers.

[Dick Beaton]

Hi Victor...

The reason for bouncing is that the jack is not getting out of the
way...."let-off".

First check your key dip.

If that is OK, then check to see if the key height is correct.  You may have
to raise the center rail a small amount on the bass end to get the key
travel far enough to do the job.
If that isnt enough, then you need to set the let-off

About all I can think of...remote control like.  Best wishes,

Dick RPT MT
----- Original Message -----
From: victor belanger <vbela@MIT.EDU>
To: <pianotech@ptg.org>
Sent: Tuesday, October 30, 2001 8:27 AM
Subject: Bouncing hammers.


> Hello all,
>
> May I indulge with y'alls expertise.
> I have a Mason & Hamlin concert grand here that in the bass, the hammers
> bounce quite a bit after the note is being struck and the hammer returns
to
> the rest rail. In fact it bounces so much that on a staccato blow
sometimes
> it can hit the string/s again. I have a pianist that pointed it out to me.
>
> I played around with the adjustable hammer rest rail. If the rail is close
> to the hammers, it seems like it is worse. The only deduction I can come
up
> with is that the hammers are too heavy. But really they are not.
> BTW. The pinning is fine.
>
> How can I avoid this problem? Why is it doing it only in the bass?
>
> Thanks.
>
> Regards.
>
> Victor
>