Thanks Ed for your response. I got very busy all of a sudden after I began this thread and I have only been able to get back to the computer now.
I will try to explain my method as best as possible, so please bear with me.
I have already screwed the wippens onto the beam. I usually align/space the wippen by papering the top edge of the flange or the face of the flange that gets screwed to the beam. Papering the side/edge to which the wippen needs to move to in order for the jack to be aligned correctly.
I usually will have the mechanism in an action cradle, with the hammers facing away from me. Then looking down into the mechanism from just above the hammers, I look to see if the particular jack top I am working with, whether it is directly in line with the hammerbutt, or whether it is leaning to the left or right.
If the jack is leaning to the left or right and to whatever degree it is out of alignment, I will mark the wippen, with chalk on the side to which the jack needs to move towards in order for it to be correctly realigned with the hammerbutt. The chalk mark will be a short, long, wide or narrow line, so that I know how many pieces of paper I need to insert.
I run through the entire mechanism, like this, marking all the wippens that need to move for the jack to be centered. Then I run through the mechanism again, inserting the paper strips accordingly. I may need to do two to three passes making corrections and adjustments so that the jacks are centered and that the wippens stay in correct alignment and spacing for the capstans, at least as best as possible.
I just thought of it now, as I was writing this that, instead of me peering from the top of hammers, down into the mechanism I can maybe use a torch and peer straight in from just above the backchecks. That might make the peering into the action to see which way the jack is leaning a bit easier.
Anyway, if others have a better way, I would really appreciate your input and methods.
Edited by Mark Davis (05/24/13 04:05 PM)
Piano Tuner & Technician