string terminations

[Ric Brekne]

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Hi Ron.

Thanks for you contribution here. Interesting to hear your understanding 
that there have been no bench testings to confirm (or deny) what Dr. 
Anderssen's maths seem to clearly support.  But then thats my whole 
point.  There are folks ready to write this whole issue off as 
unreasonable with out so much more then what amounts to casual 
observation.  Ok, the increased mass bit is educated enough, but that 
looks in another direction entirely without really looking at the 
question in hand.

For the same reasons I  must  aggree with you that bench testing should 
be done before brochures are printed.  That said, until such testing is 
done we are speculating at best. One way or the other. Fair enough, as 
you say speculation is found in other places then this list as well. 

Still, I think you would aggree that it would be interesting to 
ascertain beyond any doubt what the truth of the matter is. That exact 
spirit I believe was at the core of Carls initial posting.  I think its 
a good pursuit.  I would imagin however that it needs time and somewhat 
more then casual resources to do the neccessary controlled experimentation.

FWIW, I'd like to see someone carry it out.

Cheers
RicB



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Ron Overs writes in reply to RicB's comments:

>/My point was simply to point to information compiled by those 
/>/scientists that have actually done some hard research.
/
Robert Anderssen may have come up with a mathematical model to 
support the theory, but as I understand it (and I did speak with him 
on this matter on the day of the official launch concert for the 
Stuart piano - when he offered his services to my company also), the 
bench testing to verify the claims hasn't been done. This information 
came from Mr Anderssen himself when Geoff Pollard and I were speaking 
with him.

>/  Most of what is tossed around back and forth here
/>/is speculation to some degree or another.
/
And much of what is tossed around in brochures and websites is likely 
speculation also. Speculation isn't restricted only to those of us on 
the pianotech list. While I am the first to admit that its not 
possible to exhaustively test every idea one has, we should endeavour 
to establish what factor is actually giving us the characteristics we 
are claiming.

>/Not that that is a bad thing mind you. But to at least read what 
/>/research and real experimentation has been done seems to my mind a 
/>/good idea before one starts drawing up any conclusions.
/
Indeed, and bench experiments to prove or disprove an idea should be 
done before the brochures are printed.

>/Personally, I find the vertical vibration claim quite plausible, and 
/>/there seems to be
/>/some basic maths that back it up.
/
After checking both a standard piano string and the Stuart piano 
string, with the rudimentary apparatus of a trouble lamp and my eyes, 
I don't find the idea has merit at all. I believe he is getting 
better sustain through higher bridge mass loading and zero 
downbearing.

Ron O.
-- 
OVERS PIANOS - SYDNEY
    Grand Piano Manufacturers
_______________________

Web http://overspianos.com.au
mailto:ron@overspianos.com.au <mailto:ron@overspianos.com.au>



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