THAT MYSTERIOUS BACK CHECK

[oorebeek]

I am sorry Richard,
The following happens:
First, the Grand has been regulated 100%, that means the back checks =
have also been checked the Japanese way meaning. (put your left hand =
on three hammerheads, push down the corresponding keys firmly, feel =
if there is a slight contact between hammertails and back checks, =
because of the extra pressure on the heads with the left hand one is =
now sure that there will not be any contact in the fututre, this also =
makes automatically thr official back check distance.)
Then you can determine whether the sound is too poor or not.
If the sound is still too weak, you then adjust the height of the =
back check. The result: the hammer now checks HIGHER than before and =
the sound is stronger. The hammer definitely does not come into =
contact with the back check.
I tell you, push back the back check to make double sure there is no =
contact, the tone still has improved remarkably. Now what?
Again, this is not an easy one.
Let us try again...


>
>HI RICHARD,
>Thank you for your comment about the back check/hammer tail.
>I must have forgotten to mention that the improvement of sound is ONLY
>caused by altering height of the back check. The hammer is absolutely
>free, there is no slight friction or touching the back check going up
>towards the string.
>That is exactly why nobody has yet come up with an clear answer.
>Think again please!
>
>Hi Andre
>	I stand by my answer, the back check IS touching the tail.  The reason
>you can't see it is that it only happens on a sharp blow that causes the
>hammer to flex.  You can't see this outside the piano.   This is my humble
>educated guess.
>	If I am right, just bendiing the backcheck back would solve the problem.
>Of course the hammer would check lower than the rest, but it would proove
>my hypothesis.  But this is such an obvious attempt, that it must have
>been tried already.  So tell me, the backcheck was pulled back and that
>didn't improve the sound?



friendly greetings from:

Andr=E9 Oorebeek
CONCERT PIANO SERVICE
Amsterdam, the Netherlands
email: oorebeek@euronet.nl

=83  where MUSIC is no harm can be  =83