Albert It would depend on how close the hitch pin area is to the bolt being turned. In the bass & high treble there is approximately a one to one ratio. i.e.. for every mm the plate edge moves in elevation so does the hitch pin array.The Further away the plate edge is from the hitch pins the greater the movement needed to effect the same change. Dale Erwin Has anyone determined how much the pitch changes for a given change in bearing? How does the pitch change vary across the compass? Albert. On 10/18/07, David Love <_davidlovepianos at comcast.net_ (mailto:davidlovepianos at comcast.net) > wrote: Ron is right, you can do a few at a time. Going up forces you to do more than one at a time because you are raising the socket screws against the plate whose stiffness will provide resistance to raising the screw. Going down you can lower each screw as you go by, say, 1/4 turn or whatever and the plate will flex only when you tighten down the acorn nuts. As Ron said, just do it incrementally. David Love _davidlovepianos at comcast.net_ (mailto:davidlovepianos at comcast.net) _www.davidlovepianos.com_ (http://www.davidlovepianos.com/) ************************************** See what's new at http://www.aol.com -------------- next part -------------- An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/20071020/d6627f7f/attachment.html
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