Thanks...is this downloadable? I haven't done a back action yet... David Ilvedson, RPT Pacifica, CA 94044 ----- Original message ---------------------------------------- From: "Jon Page" <jonpage at comcast.net> To: pianotech at ptg.org Received: 3/10/2010 4:16:38 AM Subject: Re: [pianotech] grand dampers >>I've been considering getting a gram gauge for measuring damper >>lever weight/spring tension. >>Is there a "normal" amount of weight/tension a grand piano? For >>instance a Steinway D? >I adjust the tension of the assist springs with a gram scale. >In the pamphlet for the Renner Back Action Kit, there is >a recommended tension scale. >-- >Regards, >Jon Page
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