<DIV>Conrad,</DIV> <DIV> </DIV> <DIV>Thanks for the offer. I'll let them know you'll in line to pick it up...right behind me.</DIV> <DIV> </DIV> <DIV>Dave Davis, RPT<BR><BR><B><I>Conrad Hoffsommer <hoffsoco@luther.edu></I></B> wrote:</DIV> <BLOCKQUOTE class=replbq style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #1010ff 2px solid">At 11:15 PM 9/13/2005 -0700, you wrote:<BR>>Hi Gang,<BR>><BR>>Today I tuned a mid-70's Mason & Hamlin BB at a church. Several years ago <BR>>(before my time...) this piano wouldn't stay in tune, so the church <BR>>replaced it, and retired it to a multi-purpose room. I got to chatting <BR>>with the sound-guy who told me that a former tuner told them it wouldn't <BR>>stay in tune because it is mounted on a grand dolly, and that since Mason <BR>>and Hamliin's have that "star system" (tension resonator), every time they <BR>>move the piano, it torques the whole rim and puts it out of tune.<BR>><BR>>Sounds logical, right?<BR><BR>Nope. Not if you've even heard about solid geometry. Three points in space <BR>determine a plane. No matter how you orient those three the plane is intact <BR>and unwarped. The dolly and the centripetal tension resonator system have <BR>nothing to do with it. The old tooner was confusticating the four point, <BR>gai-roan-teed to warp the string plane, vertical four point/wheel <BR>suspension system with the tricycle grand system. Might have been <BR>deflecting the gaze away from the restringing job, too?<BR><BR>><BR>>Dave Davis, RPT<BR>><BR>>p.s. I wonder if the poor re-string job complete with loose coils and <BR>>strings riding up on the hitch pins a mm or two, and string rendering <BR>>problems would have any effect on tuning. Hmmmmm.<BR><BR>Hmmmmm, indeed.<BR><BR>BTW, my pickup's ready to haul if you'd like to relieve the church of it's <BR>burden. Free of charge...<BR><BR>Conrad<BR>Hoffsommer's Piano Rendering and Landscape Service.<BR><BR><BR><BR><BR></BLOCKQUOTE>