That's true, instead of return springs...although those usually didn't make noise. David I. ----- Original message ---------------------------------------- From: Michael Gamble <michael@gambles.fsnet.co.uk> To: "William R. Monroe" <pianotech@a440piano.net>, <pianotech@ptg.org> Received: Wed, 11 May 2005 14:38:27 +0100 Subject: Re: springs vs. lead >It would not be the first time I have come across a heavy helical spring >under the damper tray. S&S "A" for example... As for leads? They are to be >found in many an action damper lever...Whether both are to be found in the >same piano - I don't recall. >Regards >Michael G.(UK) >----- Original Message ----- >From: "William R. Monroe" <pianotech@a440piano.net> >To: <ilvey@sbcglobal.net>; "Pianotech" <pianotech@ptg.org> >Sent: Wednesday, May 11, 2005 3:32 AM >Subject: Re: springs vs. lead >> Just a guess here David, but I would think you would have to use an awful >> lot of lead to get the return rate that you get with springs. Springs >> allow >> for a graduated resistance, increasing as the pedal is depressed further. >> Weighting might also allow the upper assy. (e.g. tray) to loose contact >> with >> the trapwork levers, causing some knocking noise. Speculation here. >> Maybe >> not............ >> >> Respectfully, >> William R. Monroe >> >> >> ----- Original Message ----- >> From: "David Ilvedson" <ilvey@sbcglobal.net> >> To: <pianotech@ptg.org>; <caut@ptg.org> >> Sent: Tuesday, May 10, 2005 9:15 PM >> Subject: springs vs. lead >> >> >>> We all come across noise from springs in pedals. Why couldn't we >> eliminate the spring and use key leads inserted into, for instance the >> damper lifter tray, pedal levers...places where springs are used to return >> parts...? >>> >>> David Ilvedson >>> >>> >>> >>> >>> _______________________________________________ >>> pianotech list info: https://www.moypiano.com/resources/#archives >>> >>> >> >> >> >_______________________________________________ >pianotech list info: https://www.moypiano.com/resources/#archives
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