Thank you to everyone that replied. I had moved the action to the back of the action cavity to improve the top octave and found that octave 5 and 6 went dead. Moved the action back and checked the hammers. The worst offending hammers were shaped so the strike point was not lined up with the core. Upon refiling and moving the strike point back where it should be, the notes came alive. I will continue to check other suggestions and see if I can get more improvement.
The issue here was that the string height on this piano is too high and the last set of hammers installed were stock boring and to short and could not be made to work..This set was custom bored for the action/string height relationship and work great. The problem occurred when hanging the new hammers. The hanging jig was adjusted to the original hammers, but because of the different bore distance, the distance from boring to the end of tail was different and the new hammers rested in a different place then the original samples in the jig. I discovered it after hanging the first few treble hammers and readjusted for the rest of the set, but was not sure if I got the top hammers correct until it was put back in the piano and did not work optimal. I may still have to rehang the top section, but now have more to look at before I do that..
Thanks again to all that responded.
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Rex Roseman
Akron OH
330-289-2948
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Original Message:
Sent: 11-10-2017 08:53
From: Rex Roseman
Subject: Strike point
I need to rehang the treble most hammers in a grand to adjust to the strike point. I have identified how far they need to move buy moving the action in and out to get the best sound and know about putting tape on the keybed and marking the starting point of the keyframe and the the corrected point to get how far to rehang the hammers. My question is how to transfer the measurement on the keybed to the hammer when rehanging? What are some ideas to determine that the hammer has been rehung in the correct position? Where does one measure from? What is the reference that can be used to preposition the hammer? All of those are the same question stated different ways. Hopefully I have been clear.
Thanks.
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Rex Roseman
Akron OH
330-289-2948
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