2017 was our 20th year online!

Welcome to the Piano World Piano Forums
Over 3 million posts about pianos, digital pianos, and all types of keyboard instruments.
Over 100,000 members from around the world.
Join the World's Largest Community of Piano Lovers (it's free)
It's Fun to Play the Piano ... Please Pass It On!

Shop our online store for music lovers
SEARCH
Piano Forums & Piano World
(ad) Piano Sight Reading
train piano sight reading with your iPhone or iPad
(ad)
Best of Piano Buyer
 Best of Piano Buyer
(ad)
Pianoteq
Steinway Spiro Layering
(ad)
Wessell Nickel & Gross
PianoForAll
Who's Online Now
52 members (CharlesXX, cmb13, David B, beeboss, Alex Hutor, anotherscott, Beowulf, bobrunyan, astrotoy, 9 invisible), 535 guests, and 578 robots.
Key: Admin, Global Mod, Mod
(ad)
Estonia Pianos
Estonia Pianos
Previous Thread
Next Thread
Print Thread
Hop To
Page 2 of 2 1 2
Joined: Apr 2015
Posts: 277
A
Full Member
Offline
Full Member
A
Joined: Apr 2015
Posts: 277
Originally Posted by Chernobieff Piano
Oh ok! I couldn't tell as there wasn't enough footage (or close up) of the set up. Could you shoot a video of the foot catching up after its forced to move?

-chris

on 1:20 is exactly that, pay more attention

(ad)
Piano & Music Accessories
piano accessories music gifts tuning and moving equipment
Joined: Sep 2018
Posts: 1,187
1000 Post Club Member
Offline
1000 Post Club Member
Joined: Sep 2018
Posts: 1,187
Oh ok! What threw me off was the plain background. A solid point of reference would have helped.

Thanks.
-chris


Chernobieff Piano Restorations
"Where Tone is Key"
Lenoir City, Tennessee U.S.A
www.chernobieffpiano.com
grandpianoman@protonmail.com
Joined: Nov 2008
Posts: 6,356
6000 Post Club Member
OP Offline
6000 Post Club Member
Joined: Nov 2008
Posts: 6,356
Originally Posted by Chernobieff Piano
Oh ok! I couldn't tell as there wasn't enough footage (or close up) of the set up. Could you shoot a video of the foot catching up after its forced to move?

-chris

The foot does not ever "catch up" to the head when it is forced to move. The head "stays ahead" until the torque on the pin is released. During that time the head rotates back to where the foot is waiting for it. The head comes nearly back to the foot, as shown by the zero mark, but not quite. Those few tenths of a degree is the residual twist left in the portion of the pin in the pinblock.


Jeff Deutschle
Part-Time Tuner
Who taught the first chicken how to peck?
Joined: Nov 2008
Posts: 6,356
6000 Post Club Member
OP Offline
6000 Post Club Member
Joined: Nov 2008
Posts: 6,356
Originally Posted by Chernobieff Piano
Oh ok! What threw me off was the plain background. A solid point of reference would have helped.

Thanks.
-chris


Seems we cross posted. The point of reference is the zero on the card, which is affixed to the foot with a bent wire. (You can see it when the pointer is not at zero.) As the foot rotates, so does the card. The pointer is a wire affixed to the becket hole on the head and rotates along with the tuning lever. (Lever not shown, wanted the graduations to be easily readable.) When the pointer goes to the left, it means the lever is applying a CCW torque to the head and the amount of resulting twist is indicated on the graduations. It only goes so far, at which point the foot is turning, too.


Jeff Deutschle
Part-Time Tuner
Who taught the first chicken how to peck?
Joined: Jan 2011
Posts: 1,713
C
1000 Post Club Member
Offline
1000 Post Club Member
C
Joined: Jan 2011
Posts: 1,713
Thanks Jeff for making this important video. Just some critiques if I may:

1. I am missing seeing the tuning pin itself, as well as the tip, apart of a fleeting and indistinct glimpse. Seeing the pin would put the demonstration into perspective and better demonstrate the purpose.

2. I would like to see a base line, or point of reference. The label is attached to the pin foot as I understand, but an extra external point of reference, such as an indicator fixed to the pin block, would show the twisting movement of the whole pin relative to the block.

3. It would be useful to know how the twist behaves with a range of torques. I think it should be repeated with torques across the range typically expected.


Chris Leslie
Piano technician
http://www.chrisleslie.com.au
Joined: Nov 2008
Posts: 6,356
6000 Post Club Member
OP Offline
6000 Post Club Member
Joined: Nov 2008
Posts: 6,356
Originally Posted by Chris Leslie
Thanks Jeff for making this important video. Just some critiques if I may:

1. I am missing seeing the tuning pin itself, as well as the tip, apart of a fleeting and indistinct glimpse. Seeing the pin would put the demonstration into perspective and better demonstrate the purpose.

2. I would like to see a base line, or point of reference. The label is attached to the pin foot as I understand, but an extra external point of reference, such as an indicator fixed to the pin block, would show the twisting movement of the whole pin relative to the block.

3. It would be useful to know how the twist behaves with a range of torques. I think it should be repeated with torques across the range typically expected.

Thanks, Chris. You are correct on all points. I did what I could with what I had in the time I had. Since it does demonstrate the things I wanted it to, I'm just going to move on. But I bet you could SHOW me how to do better! wink


Jeff Deutschle
Part-Time Tuner
Who taught the first chicken how to peck?
Joined: May 2011
Posts: 373
B
Full Member
Offline
Full Member
B
Joined: May 2011
Posts: 373
Thanks for doing this Jeff, very revealing! It shows what we all feel.


Professional Piano Technician serving the Tampa bay area. website: mckaigpianoservice.com
Joined: Nov 2008
Posts: 6,356
6000 Post Club Member
OP Offline
6000 Post Club Member
Joined: Nov 2008
Posts: 6,356
Originally Posted by Bill McKaig,RPT
Thanks for doing this Jeff, very revealing! It shows what we all feel.

You're welcome, Bill. Don't think everyone does "feel it" based on some previous comments. That's why I made the video. Could have been better, but better than nothing. smile


Jeff Deutschle
Part-Time Tuner
Who taught the first chicken how to peck?
Joined: May 2007
Posts: 2,835
D
Gold Subscriber
2000 Post Club Member
Offline
Gold Subscriber
2000 Post Club Member
D
Joined: May 2007
Posts: 2,835
It's excellent, and a vivid demonstration.

Now what I want is a video of a piano with a strain gauge in a string between tuning pin and agraffe/pressure bar, and another in the speaking length, to illuminate the question of the relative tensions in those two sections!

Joined: Nov 2008
Posts: 6,356
6000 Post Club Member
OP Offline
6000 Post Club Member
Joined: Nov 2008
Posts: 6,356
Originally Posted by David Boyce
It's excellent, and a vivid demonstration.

Now what I want is a video of a piano with a strain gauge in a string between tuning pin and agraffe/pressure bar, and another in the speaking length, to illuminate the question of the relative tensions in those two sections!


Great idea! Go ahead and do it. wink I made some suggestions for a mock up on another Topic you started:

http://forum.pianoworld.com/ubbthre...peaking-length-tensions.html#Post3071825


Jeff Deutschle
Part-Time Tuner
Who taught the first chicken how to peck?
Page 2 of 2 1 2

Moderated by  Piano World 

Link Copied to Clipboard
(ad)
Faust Harrison Pianos
Faust Harrison 100+ Steinway pianos
(ad)
Couch to Concert Hall
Couch to Concert Hall
(ad)
PianoDisc

PianoDisc
(ad)
Piano Life Saver - Dampp Chaser
Dampp Chaser Piano Life Saver
(ad)
Mason & Hamlin Pianos
New Topics - Multiple Forums
Komplete Kontrol S88 MK1 Touchkeys
by Micahjd - 05/16/21 07:26 PM
Piano out of tune?
by TheodorN - 05/16/21 04:10 PM
iOS Pianos on iPad POLL
by RinTin - 05/16/21 01:50 PM
I can quit any time I want to ...
by Retsacnal - 05/16/21 01:42 PM
Download Sheet Music
Virtual Sheet Music - Classical Sheet Music Downloads
Forum Statistics
Forums42
Topics206,967
Posts3,094,277
Members101,538
Most Online15,252
Mar 21st, 2010
Please Support Our Advertisers

Faust Harrison 100+ Steinways

Dampp Chaser Piano Life Saver

 Best of Piano Buyer

PianoTeq Bechstein
Visit our online store for gifts for music lovers

Virtual Sheet Music - Classical Sheet Music Downloads



 
Help keep the forums up and running with a donation, any amount is appreciated!
Or by becoming a Subscribing member! Thank-you.
Donate   Subscribe
 
Our Piano Related Classified Ads
| Dealers | Tuners | Lessons | Movers | Restorations | Pianos For Sale | Sell Your Piano |

Advertise on Piano World
| Subscribe | Piano World | PianoSupplies.com | Advertise on Piano World |
| |Contact | Privacy | Legal | About Us | Site Map | Free Newsletter | MapleStreetMusicShop.com - Our store in Cornish Maine


© copyright 1997 - 2021 Piano World ® all rights reserved
No part of this site may be reproduced without prior written permission
Powered by UBB.threads™ PHP Forum Software 7.7.5