Baldwin accu-hitch pins

[Erwinspiano@AOL.COM]

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In a message dated 1/19/2002 3:22:15 PM Pacific Standard Time, 
cmpiano@attbi.com writes:


> Subj:Re: Baldwin accu-hitch pins 
> Date:1/19/2002 3:22:15 PM Pacific Standard Time
> From:<A HREF="mailto:cmpiano@attbi.com">cmpiano@attbi.com</A>
> Reply-to:<A HREF="mailto:pianotech@ptg.org">pianotech@ptg.org</A>
> To:<A HREF="mailto:pianotech@ptg.org">pianotech@ptg.org</A>
> Sent from the Internet 
> 
> 
> 
> Dale,  I'm trying to set bearing on a modified Emerson.  Modified for 
> accujust hitch pins.
>  
> From a friend I borrowed the Baldwin instructions.
>  
> Briefly:::   Without bass strings installed, string treble and set bearing 
> to (zero) with strings at pitch.  No load on board.  
> Now set specified number of notes starting at bottom to 1 div (.5 degrees). 
> Number of notes depending on model of piano.  Then next group of notes to 2 
> div (1 degree).  Then the last group to 3 div (1 1/2 degrees).  Lastly 
> install the bass strings and set at pitch to 1 div (.5 degrees).

   Carl --with what device are you measuring with. May be that's part of my 
confusion. lack of info.

>  
> Then I see a note saying -Quote-
>  
> A bearing value, previously set, cannot be rechecked because the 
> accumulated force of all strings on the bridge will lower the soundboard 
> and reduce the settings which were originally set.

   >>>>>>>>        Just as I said in my post

>  
> Pianos equipped with the vertical (acu-just) hitch pins are designed to 
> function with a minimum positive bearing at the bridges, compared with 
> other pianos with string rests and angled hitch pins.    Unquote!!

   >>>>>>>>>>Poppy cock. If thats so then crown is not required.

>  
> Now if I designed something that had to be adjusted and then couldn't be 
> checked, I wouldn't admit it.  Just how do you design a piano to not need 
> much bearing?  Sounds too much like advertising garbage mouth to me.  Like, 
>  "Our piano is so dam good that we don't need so much stinkin' down 
> bearing."

  Hey--Maybe that's why so many Baldwins sound so dang aweful. Not enough 
bearing.

>  Carl says
> I'm impressed with the idea, but I'm amused at the rhetoric.
> 
>   Me too but
 I think I figured out how iId set it. I would guesstimate some intial 
setting then I would adjust it untill I'd get a lowell gauge reading similar 
to what is normal on other pianos with decent crown. 12 to 15 thou. on a 
fully crowned board

>  
> I haven't felt too spunky the last few days so I'm still adjusting the 
> bearing on this Emerson.  I've noticed that when I started I found some 
> bearing with a regular rocker gauge, but no bearing with either the Lowell 
> gauge or the Baldwin gauge. Both are a pain to use.  I want to look into 
> that.  When I get it fingered out, then you'll all get the finger. Grin.  
> --------- Carl
>  
>   Carl, As I see it you've got your own stiky wicket as most uprightswere 
> designed to have little or no crown. Now what do you do with the acu-just? 
> I would opt for the baldwin spec on the upright board ,which is as you say 
> nominal.  Most uprights have little crown(usually none) and little bearing 
> and many still sound pretty good. It' a mostly mass driven system or not 
> much stiffness due to crown compression or bearing load.
>    Best-----Dale Erwin




>  
> 


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