[pianotech] Knabe

Joseph Garrett joegarrett at earthlink.net
Wed Nov 21 11:53:27 MST 2012


Laura said: "Subject: [pianotech] Knabe
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So, was this called a "coffin tail"?
 
I' guessing I shouldn't to this to A440. Can't find a serial number...yet.
Art case 304 written on the plate. 
 
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Laura,
Maybe.<G> First of all, I'd simply call that an Early European Constructed
Piano. It has a slightly "bent" area of the rim in the middle section,but
all else is "jointed" to get the "shape".<G> It does appear to be pretty
stout, so, I don't think I'd be too concerned with the structure being
weak. However, I'd date that one in the 1855's - 1865's, so the piano wire
would definately be suspect. Since there was no "standard pitch" until
around the 1870's,and there wasn't established wire quality, either,  it'd
be a crap shoot to figure out what Knabe had as their design pitch, (if
any<G>). I've found, that 425cps,(60 cents flat), is a safe and somewhat
established pitch of that time, that is what I'd use. If the wire won't
take it, (you'll know quickly, in just setting the "pitch".<G>), then I'd
go for 100 cents flat/A#=440cps, which would make it playable with other
instruments, but would not be conducive to any kind of tuning stability,
since the tension would be so low that tuning pins would not have their
optimum "cant". BTW, I would closely inspect ALL joints of the case for
possible delaminations. That is usually the case with this type of
construction. If any such delaminations are found, I'd suggest not tuning
it and recommend that the structure be repaired before tuning be attempted.
Hope that helps.
Joe


Joe Garrett, R.P.T.
Captain of the Tool Police
Squares R I



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