Lim asked: "Hi When a grand piano sits on a Y type trolly, will there be tuning stability problems? I tuned a SK7 which sits on a Y trolly and I have a hard time on the octaves and unisons from key 55 onwards. Lim, first question: What is an SK7? Who makes it? Second question: How long have you been tuning? With that out of the way I'd say the "Y trolley", (otherwise known as a piano truck), has absolutely nothing to do with the tuning stability, other than the theorem that the contact with the base/floor/whatever has an effect on the piano tone/sustain. I personally don't buy that idea at all.<G> Regards, Joe Joe Garrett, R.P.T. (Oregon) Captain, Tool Police Squares R I -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://ptg.org/pipermail/pianotech.php/attachments/20100921/3a7e5f12/attachment.htm>
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