Hi Ron,
Interesting that you put the tight ones in the treble! The opposite of what
I am doing. I will do some experiments, although, as you say, if the action
is within an acceptable range, it would be very hard for the player to know.
I am curious as to why you see more need for a tight center in the treble. My thinking is that hammers that are angled and heavy will twist the shanks the hardes. The angle of the hammer creates a difference in load for the two sides of the bearing (left side center-of-mass is not at the same radius as the right side).
The one thing I have noticed is that loose centers in the bass make the action feel like a shot gun with a light trigger; it's more difficult to control the low dynamic playing levels.
Vladan
>I put the tight centers in the treble, because that's the area that
> needs firm centers for tone production. The looser centers
> go in the bass, because that's where the hammer weight
> problems are, and I don't want any more center produced
> friction than necessary.
>
> Ron N
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