[CAUT] question

[Ed Sutton]

August 2007

Barbara Richmond talked with Darrel  Fandrich about riblets and Ron Nossaman about adding weights and wrote an article "Voicing the Soundboard..."
We thought it was the most useful article of the year, so we put a photo of a riblet on the cover to attract attention and help you find it later.

Ed Sutton
  ----- Original Message ----- 
  From: Fred Sturm 
  To: caut at ptg.org 
  Sent: Wednesday, April 01, 2009 10:11 AM
  Subject: Re: [CAUT] question


  Darrel Fandrich designed them, wrote an article about it in the journal (description of how to make your own), and he now makes them for sale. fandrich at fandrich.com

  Regards,
  Fred Sturm
  University of New Mexico
  fssturm at unm.edu






  On Apr 1, 2009, at 7:20 AM, Dr. Henry Nicolaides wrote:


    Does anyone have a picture or diagram of this type installation? >From where are the riblets available, or does one make their own?

    Henry Nicolaides
    Piano Technician
    Southern Illinois School of Music
    Carbondale, Illinois

    henryn at siu.edu



----------------------------------------------------------------------------
    From: dporritt at mail.smu.edu
    To: caut at ptg.org
    Date: Wed, 1 Apr 2009 05:39:03 -0500
    Subject: Re: [CAUT] question


    I didn’t.  The object (as I understand it) is to increase the stiffness of the board and the riblet is what accomplishes that.  The riblet is constructed so that the ends connect with the sounding board first and only after the screw is tight does the middle make contact.  I can’t see that wedging up the board would add anything to the process nor do I think lowering the tension is necessary.


    dave


    David M. Porritt, RPT
    dporritt at smu.edu


    From: caut-bounces at ptg.org [mailto:caut-bounces at ptg.org] On Behalf Of Albert Lord
    Sent: Tuesday, March 31, 2009 9:03 PM
    To: caut at ptg.org
    Subject: Re: [CAUT] question


    David,

    Before gluing these riblets do you wedge up the soundboard
    or lower string tension?

    Albert Lord.


    On Tue, Mar 31, 2009 at 11:50 AM, Porritt, David <dporritt at mail.smu.edu> wrote:

    The riblets helped both power and sustain.  To be sure I was going to be screwing the anchor screw into the bridge I drilled a very small pilot hole down through the bridge.  I put both holes spaced between two ribs and drilled so the screws would go between unisons and would not interest bridge pins.  Then from underneath I scrapped the lacquer off the sounding board where the riblets would be glued to it.  I then applied glue and screwed them on. 


----------------------------------------------------------------------------

    David M. Porritt, RPT




     





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