Slick Key Bushings.

[John Baird]

Using TFL50 Dry Lubricant in the same way also eliminates this drag. I
imagine easier and quicker to apply than CLP. Has someone tried both and
compared results?

John Baird
Millikin University
Decatur, Illinois

----- Original Message -----
From: Richard Brekne <Richard.Brekne@grieg.uib.no>
To: PTG <pianotech@ptg.org>; <caut@ptg.org>
Sent: Friday, April 05, 2002 6:42 AM
Subject: Slick Key Bushings.


> He showed me that pushing a bit sideways on the key whilst pushing
> downwards revealed a lot of friction. So I started checking it out by
> over emphasizing the sideways component of depressing a key and found
> that there was actaully quite a bit of drag there. Not immediately
> knowing what the cause was I told him I would see what I could do.
>
> I took the worst of the two and removed the action, top action, and
> started looking at the key bushings. They were a bit worn, and I was
> aware of that before hand. There was also a blackish buildup of some
> combination of dirt dust and corrosion from the pin. So I decided to
> just try and add a couple drops of CLP to each bushing and also re coat
> the pins.
>
> The affect was astounding.  We normally think when we play that it is
> just a downward motion of the key we are dealing with.... but this
> experience has demonstrated better then any other I have had that there
> is much more to it then that. The action feels and plays like silk
> compared to how it felt before this treatment.
>
> I waited a week to see if it would last at all, found it did and did the
> same thing to the other C. In both cases I will have to replace the
> bushings sometime in the near future anyways... but I think I will give
> them a drop or two of CLP when I do