hammer shank length

[Mark Cramer]

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Lance,

I'm wondering about plate/bridge location (hence speaking length) when you
mention string breakage?

I just can't believe this (the problem you describe) would happen in a new
Mason...say it ain't so!

For Pete's sake, they're only producing two models of grands (currently),
you'd think they'd have the jigs right, especially when you see the size of
plate-location pins they use!

In any case, the factory should be able to provide you with speaking length
at #88 for a quick reference.

I don't want to send you on a goose-chase Lance, but often find it useful to
look at a problem from more than one angle.

Best of luck!

Mark Cramer,
Brandon University
  -----Original Message-----
  From: caut-bounces@ptg.org [mailto:caut-bounces@ptg.org]On Behalf Of
llafargue
  Sent: Thursday, February 19, 2004 11:50 AM
  To: 'College and University Technicians'
  Subject: RE: hammer shank length


  I agree, it’s just hard to see what’s going on back there and I think
ideally the hammers would be rehung, especially if it’s also contributing to
string breakage.  I’ll study it closer to see if I can tell exactly what’s
hitting back there.



  Lance Lafargue, RPT

  LAFARGUE PIANOS

  New Orleans Chapter, PTG

  985.72P.IANO

  llafargue@charter.net



  -----Original Message-----
  From: caut-bounces@ptg.org [mailto:caut-bounces@ptg.org] On Behalf Of
Erwinspiano@aol.com
  Sent: Thursday, February 19, 2004 9:08 AM
  To: caut@ptg.org
  Subject: Re: hammer shank length



  In a message dated 2/19/2004 6:26:20 AM Pacific Standard Time,
llafargue@charter.net writes:

    5” to 5 1/8”

    If the hammer is mounted much longer than 5 1/8”, touch gets heavy, if
shorter than 4 7/8”, you get regulation problems and reduces leverage.
Also, tails may hit whippen flanges when hammer comes to rest.



    I just worked on a 2001 M&H BB and the hammer line was so off, if you
pushed the action in for proper strike @ C8 the back checks interfere with
sostenuto and under levers, no matter what.  The piano is also breaking
strings at the V bar and I suspect the hammer line has something to do with
it.  Regards,



    Lance Lafargue, RPT

    LAFARGUE PIANOS

    New Orleans Chapter, PTG

    985.72P.IANO

    llafargue@charter.net

             Lance

     In that case I see nothing wrong with using a motortool drum sander to
hollow out the back of the backcheck. Some new backcheck replacement I've
used for stwy's have this featire which is helpful when installing modern
type back action In an old stwy with minimal clearances. This might give you
enough room to move the action to its proper location. What do you think?

     Dale





  Erwins Pianos Restorations
  4721 Parker Rd.
  Modesto, Ca 95357
  209-577-8397
  Rebuilt Steinway , Mason &Hamlin Sales
  www.Erwinspiano.com


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