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#1370569 - 02/10/10 09:21 PM piano action animated
HZ-OWNER Offline
Junior Member

Registered: 07/09/08
Posts: 1
Loc: California USA
Where can I find an animated view of a grand piano action

Hailun / Pearl River Pianos

Pearl River World's Best Selling Piano
#1370573 - 02/10/10 09:35 PM Re: piano action animated [Re: HZ-OWNER]
Volusiano Offline
500 Post Club Member

Registered: 01/01/10
Posts: 792
I thought this link is pretty good. Click on the "action in motion" red link you find in the first paragraph.

#1370577 - 02/10/10 09:43 PM Re: piano action animated [Re: Volusiano]
Steve Cohen Offline
Yikes! 10000 Post Club Member

Registered: 05/26/01
Posts: 10668
Loc: Maryland/DC/No. VA
Piano Industry Consultant- http://www.linkedin.com/pub/steve-cohen/6/b92/b80

Consultant & Contributing Editor - Acoustic & Digital Piano Buyer

Jasons Music
Maryland/DC/No. VA
Since 1937.

My postings, unless stated otherwise, are my personal opinions, not those of my clients.

#1370579 - 02/10/10 09:46 PM Re: piano action animated [Re: Steve Cohen]
pno Offline
1000 Post Club Member

Registered: 08/27/05
Posts: 1043
Loc: ♪oron♪o, on♪ario, canada...
♫♫♫ ♫♫♫

#1370680 - 02/11/10 01:00 AM Re: piano action animated [Re: pno]
Supply Offline
3000 Post Club Member

Registered: 09/11/06
Posts: 3919
Loc: Vancouver Island, BC, Canada
Here's one that strikes the string:

Jurgen Goering
Piano Forte Supply

Piattino Caster Cups distributor

#1940329 - 08/10/12 01:00 PM Re: piano action animated [Re: HZ-OWNER]
Wayne Land Offline
Junior Member

Registered: 08/10/12
Posts: 2
I created this 3d animated action many years ago. The link has changed recently. You'll find it at:


Enjoy! Please don't copy it to another site. However, links to the page are appreciated.

#1940391 - 08/10/12 03:34 PM Re: piano action animated [Re: Wayne Land]
Ed Foote Offline
1000 Post Club Member

Registered: 05/03/03
Posts: 1452
Loc: Tennessee
[quote=Wayne Land]I created this 3d animated action many years ago. The link has changed recently. You'll find it at:


For clarity, the nomenclature could use a lot of editing. The "let-off screw" is actually the let-off button, (or felt, if one is to go completely elemental), and the jack and fly are one and the same, however, I don't think a jack has a fly adjustment screw, it has a jack adjustment screw, with a button.
What is really confusing is calling the drop leather a "balancier covering" and then explaining its function as "The Balancier Covering provides cushioning if the Balancier moves all the way up against the Hammer Flange". This is totally in error. Its purpose is to quieten the contact with the drop screw.

Also in error is " The Hammer "escapes" from the Jack or from the Balancier depending on how the key is moved. Basically if the key is moved from a full stroke the jack does the pushing but if the key is moved from a lower position as in fast or very soft repetition, the balancier does the pushing. "' Again, totally in error. The balancier's contribution to propulsion is not only neglible, but is not dependent of the force or speed of play. Its main role is to insure that the jack can reset, and to accelerate the key's rise when the key is released. It doesn't push anything, but at most, reduces pressure on the jack during escapement.

During escapement, if the tender and drop pad connect simultaneously, the balancier stops, while letting the jack do the final bit of propulsion as it is tripped out by the let-off button. The only time the properly adjusted balancier is in control of the hammer is when the hammer is released from check and is rising.


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