Pianos on curved church floors

[Joe And Penny Goss]

Hi Joe,
I don't think it is so much the wrong thread as much as it  < IS >  the little burr that I can feel with my finger nail on the thread.
I will be more aggressive in trying to remove it and see what happens.
Thanks
Joe Goss RPT
Mother Goose Tools
imatunr at srvinet.com
www.mothergoosetools.com
  ----- Original Message ----- 
  From: William R. Monroe 
  To: Pianotech List 
  Sent: Friday, May 23, 2008 7:37 AM
  Subject: Re: Pianos on curved church floors


  Jessica,

  Why WOULD an inch-and-a-half make any difference in how it plays?  (Only trying to be slightly flippant here).  The forces of gravity are only slightly off a vector normal to the keyframe/keybed/action/whatever.  1.5 vertical inches to about 55 horizontal inches gives you about a 1.6 degree angle deviation from normal.  If that amount of side bearing give the piano fits, the piano has fits regardless.

  And, as others have tried to point out, a grand will not rack with it's three points of contact with the floor; unlike a piano with four points of contact.

  I don't think why a grand on it's side won't play really needs explanation.

  Do keep in mind that S&S pianos are designed to have guide rail bushings with more play and then specify that the dampers SHOULD lean with a light pressure into the bushing felt.  Of course, that doesn't preclude proper bends in the dampers....

  William R. Monroe

    Hi, 

    Tell me does a grand on its side play?  Why wouldn't almost an inch and a half make any difference in how it plays?  



    Someone could have even from the Yamaha factory treated the guide felt with something and I'm not sure that this has anything to do with more compression of the felt on one side.  



    Just a warning I've seen other pianos with guide rail bushing holes reamed so much that the damper wire rattles and leans into what felt is left.  Reaming the hole more won't fix binding because the wire is bent wrong. It has to travel straight through the guide rail holes and with the pull of gravity or more friction will be added.



    Jessica Masse
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