Now that is something to think about...does the truck flex at under the pianist's playing? Not a good thing if it did... Do you have picture of this retrofit? David Ilvedson, RPT Pacifica, CA 94044 ----- Original message ---------------------------------------- From: "Ward & Probst, Inc" <wardprobst at wardprobst.com> To: "College and University Technicians" <caut at ptg.org> Received: 5/15/2008 1:17:57 PM Subject: Re: [CAUT] buzzing truck >Dave, >Wheels wear out, trucks usually don't. We install a vertical brace between >the truck plate and a bean to stiffen the assembly. Anecdotal reports are >that it improves the touch and tone. The brace is black pipe cut and >threaded to size with floor flanges fastened to the parts at each end. >HTH, >DP >Dale E. Probst, RPT >Ward & Probst, Inc. >Wichita Falls, TX >mailto:dale at wardprobst.com >www.wardprobst.com >-----Original Message----- >From: caut-bounces at ptg.org [mailto:caut-bounces at ptg.org] On Behalf Of >johnsond >Sent: Thursday, May 15, 2008 10:03 AM >To: College and University Technicians >Subject: [CAUT] buzzing truck >Hi all- >The truck on our #2 performance piano has a problem buzz. It has been >elusive for some time mostly because it's been difficult coordinating >the occurrence of the buzz with someone else available to play the note >while I check things out. This finally happened yesterday. All bolts >are tight. When we play a Bb there is a buzz coming from somewhere >between the top and bottom center plates. Laying only the weight of my >hand on the top plate makes it stop, remove my hand and it comes back. >It does not sound like any stray material is inside but it will not be >possible for me to remove the truck until summer sometime. What I did >was loosen the suspicious bolt about half way which allowed the plates >and arm to reposition slightly, then re tighten. I have not been able >to make it recur since then. It is a standard Colson truck from >Jensen's that I guess is about 15 years old. I am inclined to recommend >just replacing the whole truck as I was expecting to replace the wheels >anyway this summer. As anyone else experienced a similar problem with a >truck? How long do you typically keep them on performance pianos? Any >other suggestions.....? It needs to be resolved with confidence. >thanks, >Dennis Johnson >St. Olaf College
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