I have 26 steps in my grand regulating procedure and it's the only step that need to be done twice. So yes, they will change based on other adjustment made.
Al -
High Point, NC
From: Gerald Groot
Sent: Friday, March 19, 2010 9:09 PM
To: pianotech at ptg.org
Subject: Re: [pianotech] Rep. Spring Strength
Raising or lowering the hammer line also affects repetition spring strength.
From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf Of reggaepass at aol.com
Sent: Friday, March 19, 2010 4:52 PM
To: pianotech at ptg.org
Subject: Re: [pianotech] Rep. Spring Strength
I assume from the replies so far that key leveling and dip would have nothing to do with it?
But they do: More dip or less dip = higher or lower checking (all else being equal).
Alan Eder
-----Original Message-----
From: Steven Hopp <hoppsmusic at hotmail.com>
To: pianotech at ptg.org
Sent: Fri, Mar 19, 2010 9:03 am
Subject: Re: [pianotech] Rep. Spring Strength
Yes, the checking height was changed but not by much. I assume from the replies so far that key leveling and dip would have nothing to do with it? I can see how checking would make the difference due to greater or lesser compression of the spring.
Regarding humidity. I live in the desert and our RH where this piano sits is 22-31% at all times.
The pianist I worked for could tell after my tuning sat in the auditorium overnight that the bass had gone sharp by about 2 cents but had no complaint about what I considered to be slightly stronger than normal spring tension. In fact he liked the way the piano played.
I guess I will weaken the springs a bit. Sorry to say but I dislike butterfly spring regulation. I had a bad time with over strengthening those springs and a bit of a struggle getting them back. They still are not great but at least it is on my personal piano so no client piano harmed =)
Thanks for the suggestions.
Steven Hopp
Midland, TX
P.S. For any new techs who are reading this and might take the class "Are You Regulationally Challenged?" at convention; which I highly recommend, when Rick says that regarding rep spring strength their should be "some" rise, any rise no matter how small is sufficient to start the regulation. On the above piano I went willy nilly strengthening springs just so I thought there was good rise to hammers....uh that was bad!!! What a learning lesson. As I said it was my piano so no real harm done. This year I plan to take part two and really learn something....LOL.
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To: pianotech at ptg.org
Date: Fri, 19 Mar 2010 01:01:38 -0400
From: tnrwim at aol.com
Subject: Re: [pianotech] Rep. Spring Strength
As Gene suggested, changing the checking height will make a difference on how much tension there is on the rep spring. But the weather also has a lot to do with it. When it's humid, the centers are tighter than in the dry winter months.
Wim
-----Original Message-----
From: Steven Hopp <hoppsmusic at hotmail.com>
To: pianotech at ptg.org
Sent: Thu, Mar 18, 2010 6:27 pm
Subject: [pianotech] Rep. Spring Strength
The question is: Can a repetition spring get stronger from regulation without adjusting the tension?
I did full regulation on Yamaha C7. It was "regulated" by another technician 6 months before me. I found that key leveling and dip had not been done so no telling where it went from there. The level and dip was off for sure. As the regulation proceeded and came to it's conclusion I found repetition spring strength better than when I started. In fact it is too strong in most sections. How is this possible?
Thanks,
Steven Hopp
Midland, TX
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