[pianotech] Broken Hitch Pin

Joseph Garrett joegarrett at earthlink.net
Tue May 8 20:53:39 MDT 2012


Jim said: 
"Patrick,
 
Just as an aside, are you sure you haven't inadvertently cranked the 
tension higher than is was originally with your new string scale? These 
suckers are already on the edge of self destruction without raised 
tensions to make it worse."
 
Jim,
And this statement is based on what fact?!!! Yes, most square grands have
thinner plates, but they are still quite capable of holding tensions of the
time of design. In fact, many were designed for tensions/pitches far higher
than modern designs. Mass, in cast iron does not translate into strength!
And, unless, patrick upped the scale to a High Tension Scale, the most that
would happen is Cheek Lift. It is, also, common for hitch pins to fail, as
most were nothing more than nails, made out of soft maleable steel. No
biggie to replace, IF you can find the correct diameter NAIL.<G>


Joe Garrett, R.P.T.
Captain of the Tool Police
Squares R I



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