[pianotech] Hammer Technique: was Q & A Roundtable

[David Love]

One interesting aside that might be of interest in this discussion.  I
recall in that same tuning class that I attended given by Jim Coleman that I
referred to in that other thread on ETD/Aural tuning, he made an interesting
observation.  ETD users tend to tune up to the pitch and Aural tuners tend
to tune to slightly above the pitch and settle back down.  He certainly
thought the former was possible and quite possibly the feedback that you get
from the machine allows you to do that more easily than you can tuning
aurally where you need to rely on other criteria to find your bearings.
However, it's probably important to note that doesn't mean that you can't
apply the same technique that allows you to tune up to the pitch when tuning
aurally.

David Love
www.davidlovepianos.com


-----Original Message-----
From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf
Of David Love
Sent: Wednesday, February 02, 2011 9:35 AM
To: pianotech at ptg.org
Subject: Re: [pianotech] Hammer Technique: was Q & A Roundtable

I'll address both of these separate questions.  

First, (Mike) let's be clear, I didn't say that the first segment didn't
increase while the speaking length did, I said the first segment didn't
increase *above* the level where the speaking segment ends up.  So, in
answer to both your queries, that's that beauty of an ETD (yet another use).
You don't have to measure the actual tension to know that you didn't need to
increase the tension above the target.  You can easily demonstrate that the
pitch can be made to rise to the target from below and when you stabilize
the pin you can see that there is no change to the sharp side which needs to
be settled back down indicating that no additional or excess tension was
stored in the front segment.  It's deductive reasoning.


David Love
www.davidlovepianos.com



Inquiring minds would like to know how you measured the tension in each
segment, in order to demonstrate that the first segment tension did not
increase, while the speaking length tension did.

Mike


How, pray, did you demonstrate that the first segment tension never 
exceeded equilibrium tension when it's contrary to the basic physics of 
the system? For that matter, how could the first segment tension be 
determined at all? If you've worked out a miraculous method of 
determining this, I'd really love to know how it's done. I've needed a 
way to read string segment tensions from day one, and haven't seen or 
discovered a way to do it yet.

Ron N