Restored Baldwin out the door

[Erwinspiano@aol.com]

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In a message dated 1/4/2003 11:04:50 PM Pacific Standard Time, 
pianobuilders@olynet.com writes:

> Subj: Re: Restored Baldwin out the door 
>  Date: 1/4/2003 11:04:50 PM Pacific Standard Time
>  From: <A HREF="mailto:pianobuilders@olynet.com">pianobuilders@olynet.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 
> 
> 
> 
>  
> >> ----- Original Message ----- 
>> From: <A HREF="mailto:Erwinspiano@aol.com">Erwinspiano@aol.com</A> 
>> To: <A HREF="mailto:pianotech@ptg.org">pianotech@ptg.org</A> 
>> Sent: January 04, 2003 7:24 PM
>>  Subject: Re: Restored Baldwin out the door
>>  
>> 
>> >>> >>>> ----- Original Message ----- 
>>>> From: <A HREF="mailto:Erwinspiano@aol.com">Erwinspiano@aol.com</A> 
>>>> To: <A HREF="mailto:pianotech@ptg.org">pianotech@ptg.org</A> 
>>>> Sent: January 03, 2003 3:55 PM
>>>> Subject: Restored Baldwin out the door
>>>> 
>>>>            Del

                    I know I've rebuilt a Baldwin K which is the 6ft. 3 size. 
I liked it as well as the L or at least in different ways. Maybe a question 
For Jack Wyatt as to its predesseror.
   As to the rib width you queired about,  rib 1 being low bass thru 12 being 
high treble ,width as follows. Ribs1-3 at 24mm wide no. 4 ,5 at 25mm, no. 6 
at 26mm, 7,8,9,10 at 24mm, 11,12 at 22mm. 
  I don't know the Baldwin R width specs. I took the heights of it though off 
an existing 1950s R with a decent sounding but  not much crown left in board  
thats' currently in for work.
   I have no doubt this was a probably a compression crowned like device.
       Dale

> >> >>> >>>> 
>>>>              Interesting post Del as I believe this model is the Balwin 
>>>> C model you mention in the post at the bottom of this one. Shocked may 
>>>> have been the wrong choice of words describing the shallow rib depth but 
>>>> ribs 1 thru 3  were 24mm wide and 14,15.5,18,&18mm deep. compared to the 
>>>> Baldwin R model (same length 5ft. 8")
>>>> 18,21,22,24mm. Same width. I beefed up the bottom 7 ribs in depth.
>>>>   
>>>>    Baldwin R depth         BaldwinC depth
>>>>     rib depth                   original   Rib depth      new depth    
>>>> rib length C
>>>>   1  18  mm                     14 mm                         17mm       
>>>>     23 inches                                                          
>>>>   2  21                             15.5                              
>>>> 18.5              31
>>>>   3  22                             18                                 
>>>> 22                 40
>>>>   4  24                             18                                 
>>>> 23                 46
>>>>   5  24                             18                                 
>>>> 25                 49
>>>>   6  24                             19.5                              26 
>>>>                  42
>>>>   7 24                              19.5                              24 
>>>>                  34
>>>>   8 19                              23                                 
>>>> 23                  27    
>>>>   9 19                              21                                 
>>>> 21                  22
>>>>  10 17                             19                                 19 
>>>>                  18
>>>>  11 16                             17.5                              18  
>>>>                  15
>>>>  12  no rib                      15.5                               16   
>>>>                 11
>>>>    As you can see the original depth of the last five ribs on the C were 
>>>> already stiffer than the Rs.
>>>> The first 8 ribs were crowned to a 60 ft radius and the last four at a 2 
>>>> by 50  and 2 forty ft.  It's a very good rib scale with excellent 
>>>> response. Board emc 6% at time of ribbing. >340 thick Sitka panel 
>>>> thinned at the edges except treble. Please use it if you wish.
>>>>         Regards Dale Erwin
>>>> 
>>> 
>> 
>   
> If I'm not mistaken (and I might well be) the Model C was morphed into the 
> Model L -- both approximately 6' 3" in length. I don't know what the 
> predecessor to the Model R might have been.
>   
> As may be, interesting rib specifications. (Don't suppose you also have the 
> width of these various ribs?) Again, if I'm not mistaken (and the chances 
> of this are getting better and better as this discussion goes on) these 
> early Baldwin grands had compression-crowned soundboards. It was impossible 
> to tell from the specifications I had to work with and, needless to say, 
> the bellymen who might have known were long gone. Putting together the 
> various clues at my disposal at the time I came to the conclusion that the 
> boards in the original were compression-crowned. Later the ribs were made 
> some more substantial -- that is, taller -- when they started (at least 
> quasi-) rib-crowning the things. I don't know when they started leaving the 
> twelfth rib out....
>   
> Del
> 
> 


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