Vertical action questions

[Keith McGavern]

>...I should have said "overhauling", not "rebuilding". I will try your plan
>of attack on the action centers.
>Jerry Hunt
>Dallas, TX USA

Jerry, List,

I'd like to qualify why using larger center pins is not always a good idea
even though it can be done as I have done for occasional repairs on older
uprights that are hanging in there.  Reaming out the birdseye becomes
necessary to accomodate larger center pins.  I think you can easily see
that If a person goes all the way to a size 26 center pin, replacement of
the hammer butt is just around the corner.  Whereas, rebushing affords the
opportunity to retain the original action parts.

Having said that, it becomes a judgement call as I said earlier, depending
on so many variables that all of us have to make at one time or another.
As long as you are willing to stand by and back your decisions, even if it
later proves to be an incorrect one, you can't go wrong.

Thank you,

Keith A. McGavern
kam544@ionet.net
Registered Piano Technician
Oklahoma Chapter 731
Piano Technicians Guild
USA