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In a message dated 1/4/2003 12:07:50 AM Pacific Standard Time,
pianobuilders@olynet.com writes:
> Subj: Re: Restored Baldwin out the door
> Date: 1/4/2003 12:07:50 AM 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 03, 2003 3:55 PM
>> Subject: Restored Baldwin out the door
>>
>> I had the pleasure of making the Baldwin client cry today...
>> that is with joy. Her 90 year old mother wass there to see and hear the
>> piano she'd suffered with teaching piano lessons low those 25 years. I was
>> very gratified & honored at the response.
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 4 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
> >>
>> List
>> Tomorrow I'm delivering a 1920 pre-model R Baldwin. It's 5 ft. 8 "
>> I just thought some would enjoy a thought or two on this. This is the
>> first Baldwin I've had the opportunity to do a complete restoration on
>> including new belly and all. Although I'm not a big Baldwin fan I am very
>> pleased with the way this piano came out. Tonally it's very strong, and
>> dark sounding with excellent sustain characteristics. Very even scale note
>> to note& no weak spots or notes. This board had/has eleven ribs compared
>> to a modern Rs 10 heavier built ribs. The original ribbing was really to
>> light especially in the bottom end. Like 15/16 mm deep on the first 3 or
>> ribs. I beefed them up. I use tight sugar pine thru out on a Sitka panel.
>> I was shocked to think that Baldwin Designers had any idea that ribs that
>> thin would retain any kind of real crown for more than two weeks.
Dale Erwin
> Del writes
> Why should you be so shocked? In a compression-crowned soundboard assembly
> the ribs actually resist the formation of crown and of necessity must be
> flexible enough to bend as the board expands. The ribs on
> compression-crowned soundboards are almost always wider than they are tall
> -- though this is some shallow even for an early c-c board.
>
> I'm guessing that they were trying to reduce the stiffness of the
> soundboard assembly to give it somewhat better mobility in response to the
> larger movement required to develop good articulation in the bass.
>
>
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