Knabe craked plate

[Delwin D Fandrich]

Can you attach a couple of photographs?

Del 

| -----Original Message-----
| From: pianotech-bounces@ptg.org 
| [mailto:pianotech-bounces@ptg.org] On Behalf Of David B. Stang
| Sent: September 23, 2005 1:25 PM
| To: pianotech@ptg.org
| Subject: Knabe craked plate
| 
| Friends,
| Here's another question about my 1900 Knabe 6'4 grand. The 
| plate is cracked. The cracks are in the two treble bars, and 
| just above the pinblock. I am planning to take it to a welder 
| whom I understand is the best qualified person to work on 
| piano plates in the state of Ohio. 
| However, I just read an article in the Journal (June '03) 
| written by B.M. Patchett, et.al., discussing a plate from a 
| mid-1800's Schiedmayer which was cracked in the same way as 
| mine. The authors made a bunch of measurements and created a 
| model of the stresses and came to the conclusion that the 
| plate would fail again even with the best welds in the world. 
|  They ended up adding steel reinforcing bars to the tops of 
| the treble bars. Well, now I'm wondering if my Knabe is in 
| the same boat. Any wisdom ??
| 
| thanks.
| David B. Stang
| Columbus, Ohio
| 
| 
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