Welcome to the Piano World Piano Forums
Over 2 million posts about pianos, digital pianos, and all types of keyboard instruments
Join the World's Largest Community of Piano Lovers (it's free)
It's Fun to Play the Piano ... Please Pass It On!

SEARCH
the Forums & Piano World

This custom search works much better than the built in one and allows searching older posts.
(ad 125) Sweetwater - Digital Keyboards & Other Gear
Digital Pianos at Sweetwater
(ad) Pearl River
Pearl River Pianos
(ad) Pianoteq
Latest Pianoteq add-on instrument: U4 upright piano
(ad) P B Guide
Acoustic & Digital Piano Guide
PianoSupplies.com (150)
Piano Accessories Music Related Gifts Piano Tuning Equipment Piano Moving Equipment
We now offer Gift Certificates in our online store!
(ad) Estonia Piano
Estonia Piano
Quick Links to Useful Stuff
Our Classified Ads
Find Piano Professionals-

*Piano Dealers - Piano Stores
*Piano Tuners
*Piano Teachers
*Piano Movers
*Piano Restorations
*Piano Manufacturers
*Organs

Quick Links:
*Advertise On Piano World
*Free Piano Newsletter
*Online Piano Recitals
*Piano Recitals Index
*Piano Accessories
* Buying a Piano
*Buying A Acoustic Piano
*Buying a Digital Piano
*Pianos for Sale
*Sell Your Piano
*How Old is My Piano?
*Piano Books
*Piano Art, Pictures, & Posters
*Directory/Site Map
*Contest
*Links
*Virtual Piano
*Music Word Search
*Piano Screen Saver
*Piano Videos
*Virtual Piano Chords
Topic Options
#616723 - 05/06/03 01:09 PM Key Dip and Downweight
Rick Offline
500 Post Club Member

Registered: 08/01/01
Posts: 559
Loc: Chicago
Could a technician please tell me if there is a widely used or accepted tool that you use to measure key dip (should be 9 to 10 mm?). I would like to acquire such a tool, for my own devious purposes of course \:D . Also, isn't there a parameter called "downweight" that is frequently measured by piano technicians? Did I read that this is done by placing successively heavier masses on a key until you get one that will push the key all the way to the bottom? Or is the requirement to actually make the note sound ever so faintly? Thanks for any help.
Rick

Top
(ad PTG 568) Grand Action Regulation in 37 Steps
Grand Action Regulation in 37 Steps
#616724 - 05/06/03 07:10 PM Re: Key Dip and Downweight
curry Offline
3000 Post Club Member

Registered: 08/17/02
Posts: 3769
Loc: Hamilton Twp, NJ
Rick,we use an assorment of tools to measure key-dip.The are keydip blocks of different thicknesses,3/8ths,13/32 nds,7/8ths,and 10 mm.There also are gauges available from the likes of Glen Hart and others in the PTG.To answer your question on down-weight,would take a long time,but simply put you would use a set of accurate gram weights.By placing say a 50 gram weight on the top of a key front,and with the damper system disengaged the key should slowly drop to the point of let-off.Each manufacturers specification for downweight across the keyboard is different,so is the up-weight spec,which is the amount of weight a key will lift from the point of let-off to where the key is back to it's starting position.Again this is measured with the damper system disengaged. \:\)
_________________________
G.Fiore "aka-Curry". Tuner-Technician serving the central NJ, S.E. PA area. b214cm@aol.com Concert tuning, Regulation-voicing specialist.
Dampp-Chaser installations, piano appraisals. PTG S.Jersey Chapter 080.
Bösendorfer 214 # 47,299 214-358

Top
#616725 - 05/07/03 10:26 AM Re: Key Dip and Downweight
Rick Offline
500 Post Club Member

Registered: 08/01/01
Posts: 559
Loc: Chicago
Thanks a lot for your response, Curry. Is it possible for me to see (and possibly order) a set of these keyblocks online? Or the other type from Glen Hart? First I would like to just see what they look like, then I may want to purchase (either online or locally). Regarding the downweight value, it is a little different than I thought. You're saying that the key should not even make it to "stroke bottom", right? It only need make it to[/b] the "let-off (or set-off?)" region. It sounds like it doesn't even have to make it through the letoff region, just up to it. Please let me know if that's a correct interpretation or not. Thanks Much.

Rick

Top
#616726 - 05/07/03 02:10 PM Re: Key Dip and Downweight
curry Offline
3000 Post Club Member

Registered: 08/17/02
Posts: 3769
Loc: Hamilton Twp, NJ
Rick,I'm not sure if you can buy the key-dip blocks on line,they are only available through the piano supply houses like Schaff and Pianotek etc,where you must have an account.The downweight procedure is correct,the gram weights are placed on the key front and with the damper system disengaged,the key will slowly sink to where the jack engages the let-off button.The key does not depress all the way down,nor should any sound be heard.You are only weighing dynamic and static touchweight( up and down weight) in this manner,using mathematical equations to measure the friction and balance weight of each key. Why do you want the dip blocks?Each piano is different there are really no set parameters just a spec for each action model.One Steinway can be set up with a 10mm dip,another would not function well with a 10mm dip,but \:\) 9.5mm would work just fine.
_________________________
G.Fiore "aka-Curry". Tuner-Technician serving the central NJ, S.E. PA area. b214cm@aol.com Concert tuning, Regulation-voicing specialist.
Dampp-Chaser installations, piano appraisals. PTG S.Jersey Chapter 080.
Bösendorfer 214 # 47,299 214-358

Top

Moderator:  Piano World 
What's Hot!!
HOW TO POST PICTURES on the Piano Forums
-------------------
Sharing is Caring!
About the Buttons
-------------------
Forums Rules & Help
-------------------
ADVERTISE
on Piano World

The world's most popular piano web site.
-------------------
PIANO BOOKS
Interesting books about the piano, pianists, piano history, biographies, memoirs and more!
(ad) HAILUN Pianos
Hailun Pianos - Click for More
ad (Casio)
Celviano by Casio Rebate
Ad (Seiler/Knabe)
Seiler Pianos
Sheet Music
(PW is an affiliate)
Sheet Music Plus Featured Sale
(125ad) Dampp Chaser
Dampp Chaser Piano Life Saver
(ad) Lindeblad Piano
Lindeblad Piano Restoration
New Topics - Multiple Forums
Digital piano key noise
by bigsmile
09/21/14 03:15 AM
Hans von Bulow's piano
by phantomFive
09/21/14 01:57 AM
Rubinstein teaching style
by phantomFive
09/21/14 01:52 AM
Question regarding "technique"
by Francisco Scalco
09/21/14 12:29 AM
How about this Knabe Studio Piano?
by Paul678
09/20/14 11:49 PM
Who's Online
72 registered (bennevis, Altair, Alex75001, aesop, 23 invisible), 974 Guests and 22 Spiders online.
Key: Admin, Global Mod, Mod
Forum Stats
76260 Members
42 Forums
157662 Topics
2315786 Posts

Max Online: 15252 @ 03/21/10 11:39 PM
(ads by Google)

Visit our online store for gifts for music lovers

 
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 | Donate | Link to Us | Classifieds |
| |Contact | Privacy | Legal | About Us | Site Map | Free Newsletter | Press Room |


copyright 1997 - 2014 Piano World ® all rights reserved
No part of this site may be reproduced without prior written permission