It is a good idea "to replace dampers on an old upright with ones that are longer". I highly recommend getting a copy of Bill Spurlock's paper on Vertical Damper Replacement http://www.spurlocktools.com/id36.htm . Piano Forte Supply has 55 mm and 67 mm long upright bass dampers: http://www.pianofortesupply.com/dampers1.html Yes, you could measure the spring tension with a spring gauge, but any old upright is likely to have very weak wires. Consider replacement - and it is often easier to replace the entire damper lever assembly. I guarantee you, you don't want to mess with upright dampers without Bill Spurlock's paper in front of you. Only $2.50 and worth hundreds easily. Terry Farrell ----- Original Message ----- Is it a bad idea to replace dampers on an old upright with ones that are longer, we're talking about 3/8" longer (3/16ths at each end). ...and this would be for the bass's bi and mono dampers only. Is the longer length going to cause a problem when the damper goes to lift? Also, while I am in there, is it a good idea to verrrry slightly (bend) each damper's spring wire so that it strengthens their pressure on the strings? Is there a way, perhaps a gage, to measure the pressure of these springs? If it can be measured, what should it be? Thanks Julia Gottshall, Reading, PA -------------- next part -------------- An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/20060721/a2f4dd93/attachment.html
This PTG archive page provided courtesy of Moy Piano Service, LLC