<!doctype html public "-//W3C//DTD W3 HTML//EN"> <html><head><style type="text/css"></style><title>Yamaha Spring Tension</title></head><body> <div>><font face="Arial" color="#000000">40 grams measured at the spring is roughly</font></div> <div><font face="Arial" color="#000000">>equivalent to 20 grams measured at the flange.</font></div> <div><br></div> <div>Thanks Frank, that's what I'm getting when I open the spring</div> <div>so as to have the arms in line at 180 degrees (the resulting</div> <div>angle is around 130 degrees) and attach to the loop.</div> <div><br></div> <div>I'll enter this info into my Action Handbook in the Yamaha section</div> <div>along with 44mm cord length which is achieved by wrapping the</div> <div>cord around a 9/16" dowel and slicing along the length of the dowel.</div> <div>Glueing cord ends onto the flange 10mm on each side of the yoke.</div> <div><br></div> <div>I remove the hammers/flanges from the rail, number each and separate.</div> <div>This way I can file the hammers on the oscillating spindle sander and</div> <div>decide if repinning is in order. Secure the flanges in a vise to clean the</div> <div>flange grooves and install the new cord. Assemble units, open spring, hook.</div> <div><br></div> <div>I might even opt to taper the hammers slightly. RIght side in the bass,</div> <div>left side in the tenor and both sides in the treble.</div> <div><br></div> <div>Tom Cole's procedure is here (see photo at end):</div> <div><font face="Arial" size="-4" color="#000000" >https://www.moypiano.com/ptg/pianotech.php/2006-December/198869.html</font ></div> <x-sigsep><pre>-- </pre></x-sigsep> <div><br> Regards,<br> <br> Jon Page</div> </body> </html>