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grinnell brothers detroit
#2982880 05/23/20 04:18 PM
Joined: Apr 2013
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kurtg Offline OP
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my client has a grinnell bros. detroit medium sized upright with serial #31676 and i haven't been able to place the date of manufacture. I wonder if someone here has a list and could look it up for me. I'd highly appreciate it!

Kurt

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Re: grinnell brothers detroit
kurtg #2982899 05/23/20 04:57 PM
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My source shows 1929-1930

Ron Koval

Re: grinnell brothers detroit
kurtg #2983001 05/23/20 10:47 PM
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I rebuilt a Grinnell baby grand piano about 6 months ago. Funny, that little piano taught me the importance a thick rim is to soundboard vibration and energy conservation. I did a bit of research on the company. They started as an organ Mfg'er in 1882 and switched over to pianos in 1902. They are unique in the fact that they were one of the few companies that survived the Great Depression and made pianos well into the 40's. Here is an article i found that may be of interest to you.[Linked Image]

And the baby grand i was working on.
[Linked Image]


Hope this helps.
-chris


Chernobieff Piano Restorations
"Where Tone is Key"
Lenoir City, Tennessee U.S.A
www.chernobieffpiano.com
grandpianoman@protonmail.com
Re: grinnell brothers detroit
kurtg #2983018 05/24/20 12:11 AM
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They made it to about 1960.


Semipro Tech
Re: grinnell brothers detroit
RonTuner #2983168 05/24/20 09:37 AM
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kurtg Offline OP
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Great, thanks everyone for helping.

Re: grinnell brothers detroit
kurtg #2983170 05/24/20 09:42 AM
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#Chernobieff-- That baby grand looks real nice, like new.

Re: grinnell brothers detroit
Chernobieff Piano #2983265 05/24/20 12:32 PM
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Originally Posted by Chernobieff Piano
I rebuilt a Grinnell baby grand piano about 6 months ago. Funny, that little piano taught me the importance a thick rim is to soundboard vibration and energy conservation. I did a bit of research on the company. They started as an organ Mfg'er in 1882 and switched over to pianos in 1902. They are unique in the fact that they were one of the few companies that survived the Great Depression and made pianos well into the 40's. Here is an article i found that may be of interest to you.[Linked Image]

And the baby grand i was working on.
[Linked Image]


Hope this helps.
-chris

I'd be curious what exactly the Grinnell baby grand in the photo taught you about rim construction and how. The piano in the photos looks to have a quite thin rim; much thinner than my Baldwin.

Also, what about the scale design of that piano? The backscale looks particularly short.

Last edited by violarules; 05/24/20 12:33 PM.
Re: grinnell brothers detroit
kurtg #2983381 05/24/20 05:31 PM
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I've been working on revolutionizing the compression soundboard. Basically, really thinking it through (design and process). The Grinnell created a stumbling block. I just didn't get the tone i wanted out of it. No matter what I tried. Part of it was its small size, being 4'10". I have rebuilt many Steinway S's with great success, and those are 5'1". So it had to be something else. I believe the problem was the thin cabinet and the lack of bracing. The Steinway S has a thicker rim than the Grinnell and they have 3 braces..

Hope that explains it. On the next piano i restore without any braces, i'm putting in braces.

-chris


Chernobieff Piano Restorations
"Where Tone is Key"
Lenoir City, Tennessee U.S.A
www.chernobieffpiano.com
grandpianoman@protonmail.com

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