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)
Best of Piano Buyer
 Best of Piano Buyer
(ad)
Advanced Piano Tricks
Advanced Piano Tricks
(ad)
Pianoteq
Steinway Spiro Layering
(ad)
Wessell Nickel & Gross
PianoForAll
Who's Online Now
57 members (Animisha, andrea83, cygnusdei, AndyG123, Cutec, Coda9, curates_egg, Calavera, blueviewlaguna., 9 invisible), 969 guests, and 512 robots.
Key: Admin, Global Mod, Mod
(ad)
Estonia Pianos
Estonia Pianos
Previous Thread
Next Thread
Print Thread
Hop To
Joined: Jul 2008
Posts: 24
K
Full Member
OP Offline
Full Member
K
Joined: Jul 2008
Posts: 24
Looking at the latest designs for weighted keyboard actions, how are the individual keys weighted?

For Yamaha it appears as though each key's hammer has differing amounts of steel depending on its location. The hammer "curls" at the end with what looks like more curl for heavier keys.

Does this sound right? Roland key weighting seems to take a different approach but it's less obvious to me how it weights each key.

Would love to learn more!

Joined: Nov 2016
Posts: 3,156
C
3000 Post Club Member
Offline
3000 Post Club Member
C
Joined: Nov 2016
Posts: 3,156
Sometimes all keys have the same weight. At other times they are weighted in groups, usually 4 groups I guess.

Individually weighted keys are less common and typically found in more expensive models except for Roland where apparently all current hammer actions have individually weighted keys.

The actual implementation can be a steel rod with curls as you described for Yamaha or something else. In the end it doesn't matter. And Yamaha has moved on to a new design in the Clavinova CLP-700 series.

Joined: Jul 2008
Posts: 24
K
Full Member
OP Offline
Full Member
K
Joined: Jul 2008
Posts: 24
I was hoping someone would know what part of the action actually provides the weight. In the old days it was a piece of lead, but I don't think that's allowed today for environmental reasons.

Last edited by KeyboardAficionado; 12/05/21 08:42 PM. Reason: clarification
Joined: Sep 2007
Posts: 17,808
Yikes! 10000 Post Club Member
Online Content
Yikes! 10000 Post Club Member
Joined: Sep 2007
Posts: 17,808
Originally Posted by KeyboardAficionado
I was hoping someone would know what part of the action actually provides the weight. In the old days it was a piece of lead, but I don't think that's allowed today for environmental reasons.

It's usually a metal hammer, however some manufacturers also place additional counterweights inside the keys.

In the case of Kawai, you can see reasonably high resolution cut-away shots of the action on the individual product pages of the Kawai Global website.

Kind regards,
James
x


Employed by Kawai Japan, however the opinions I express are my own.
Nord Electro 3 & occasional rare groove player.
Joined: Nov 2016
Posts: 3,156
C
3000 Post Club Member
Offline
3000 Post Club Member
C
Joined: Nov 2016
Posts: 3,156
Nowadays they are all hammer actions, so the key is a relatively light-weight piece of plastic, wood or both and it then moves a lever (the "hammer") that has some weight by itself and there may be some more in the end especially if it's an otherwise plastic piece. Or it's a longer pivoted stick of wood like Kawai has (in some actions) and a smaller "hammer" lever is moved up and down by it.

Yeah, there used to be heavy weights in the keys and then some springs or whatnot at least in Yamaha's "Action Effect" or just "AE" key action in the 80's and maybe early 90's. It's all hammer actions after that I guess.

Joined: Oct 2019
Posts: 575
_
500 Post Club Member
Offline
500 Post Club Member
_
Joined: Oct 2019
Posts: 575
I understand "weighted" spring-action keys are still in use in synths and digital organs.
http://www.fatar.com/Pages/TP_9PIANO.htm Fatar sell these as "weighted", no hammers.

Joined: Feb 2021
Posts: 74
1
Full Member
Offline
Full Member
1
Joined: Feb 2021
Posts: 74
There's quite a few videos on YouTube showing the internals (weights, pivots, sensors, etc) of various weighted DP actions being activated. Best to watch some of those.

Not all actions are invented equal.


Moderated by  Piano World 

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

PianoDisc
(ad)
Piano Life Saver - Dampp Chaser
Dampp Chaser Piano Life Saver
(ad)
Mason & Hamlin Pianos
New Topics - Multiple Forums
Play drums on Kawai es920
by scambias - 01/25/22 03:36 AM
CM Repertoire Suggestions
by iloveminis - 01/24/22 11:00 PM
Help needed for Chopin Raindrop Prelude
by JpnGrl2021 - 01/24/22 09:01 PM
Fast (? Alberti) base
by Moo :) - 01/24/22 07:29 PM
Need advice on repertoire for a solo concert
by xtype10 - 01/24/22 02:44 PM
Download Sheet Music
Virtual Sheet Music - Classical Sheet Music Downloads
Forum Statistics
Forums42
Topics211,332
Posts3,163,739
Members104,151
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 - 2022 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