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!

Gifts and supplies for the musician
SEARCH
the Forums & Piano World

This custom search works much better than the built in one and allows searching older posts.
(ad) Yamaha CP4 Rebate
Yamaha CP4 Rebate
(ad) Pianoteq
(ad) Pearl River
Pearl River Pianos
(ad) P B Guide
Acoustic & Digital Piano Guide
Who's Online
162 registered (Al LaPorte, Alan Davis Jr, ajames, accordeur, 44 invisible), 1637 Guests and 12 Spiders online.
Key: Admin, Global Mod, Mod
Quick Links to Useful Piano & Music Resources
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 & Music Accessories
*Music School Listings
* 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
(ad) Estonia Piano
Estonia Pianos
Topic Options
#629932 - 08/06/07 08:53 AM Let-off allowance for practice pedal felt
Digitus Offline
500 Post Club Member

Registered: 11/08/06
Posts: 866
Loc: Singapore
I am about to adjust the let-off across the entire keyboard on my K-8 because of problems I have been having with double-strikes when playing ppp. This is because the let-off on the affected keys has been set so that the hammer is just touching the strings when the escapement occurs.

I notice that in general the let-off distance is much closer than the 1/8" recommended by Reblitz. Reblitz also suggests that if there is a practice pedal felt present that the let-off should be adjusted to within 1/8" of the felt when the practice pedal is depressed.

What should it be? The way Kawai has adjusted it (at least on my piano) or the way that Reblitz suggests that it be done?

But Kawai clearly sets the let-off distance without allowing for the practice pedal felt.

Top
(ad PTG 757) The Value of PTG Membership
The Value of a PTG Membership
#629933 - 08/06/07 10:54 AM Re: Let-off allowance for practice pedal felt
Dave Stahl Offline
1000 Post Club Member

Registered: 05/06/07
Posts: 1645
Digitus,

The letoff on Kawai upright actions should be set to 2-3mm.

Letoff distance and other facets of regulation are not static. Climate change and playing will alter the factory regulation pretty quickly.

When the actions are new, the felt on the letoff buttons will begin to compress, causing the jacks to contact the buttons later, in turn causing some bobbling due to the later letoff.

Check the lost motion, too. I'll bet the capstans need regulation as well.
_________________________
Promote Harmony in the Universe...Tune your piano!

Dave Stahl, RPT
Piano Technician's Guild
San Jose, CA
http://www.youtube.com/watch?v=JAniw3m7L2I
http://dstahlpiano.net

Top
#629934 - 08/06/07 10:55 AM Re: Let-off allowance for practice pedal felt
Dave Stahl Offline
1000 Post Club Member

Registered: 05/06/07
Posts: 1645
...and as for the practice felt, I really wouldn't worry about adding extra letoff distance. It won't hurt anything, but the piano will be less responsive during ppp playing.
_________________________
Promote Harmony in the Universe...Tune your piano!

Dave Stahl, RPT
Piano Technician's Guild
San Jose, CA
http://www.youtube.com/watch?v=JAniw3m7L2I
http://dstahlpiano.net

Top
#629935 - 08/06/07 11:30 AM Re: Let-off allowance for practice pedal felt
Digitus Offline
500 Post Club Member

Registered: 11/08/06
Posts: 866
Loc: Singapore
Hi Dave,

Thank you very much for the quick reply. Much appreciated.

The lost motion seems fine. You may be right about the capstans, because some keys don't seem to stroke as smoothly as others. But that could be my imagination.

Top
#629936 - 08/06/07 02:21 PM Re: Let-off allowance for practice pedal felt
Dave Stahl Offline
1000 Post Club Member

Registered: 05/06/07
Posts: 1645
When playing really softly, particularly on the treble side near the bass break, you may feel some resistance as the dampers pull out of the strings. I'm talking about the tricord dampers, the ones with he fingers that go in between the strings. This can cause a slightly uneven feel in that area.

Lost motion is regulated via the capstan.

I don't know if you're a tech or not, but you seem to be inclined to work on your piano. If you aren't a tech, you might want to have someone with more experience show you what to look for to diagnose regulation problems and how to perform the various adjustments. These are things that most techs can regulate quickly and efficiently, often at regular service calls.
_________________________
Promote Harmony in the Universe...Tune your piano!

Dave Stahl, RPT
Piano Technician's Guild
San Jose, CA
http://www.youtube.com/watch?v=JAniw3m7L2I
http://dstahlpiano.net

Top

Moderator:  Piano World 
What's Hot!!
The February 2015 Issue of our Free Piano News Newsletter is out now! FREE Piano Newsletter
--------------------
The best thing I've learned on Piano World....
-------------------
Posting Pictures on the Forums
-------------------
Forums Rules & Help
-------------------
ADVERTISE
on Piano World

The world's most popular piano web site.
-------------------
PIANO BOOKS
(ad 125) Sweetwater - Digital Keyboards & Other Gear
Digital Pianos at Sweetwater
Ad (Seiler/Knabe)
Knabe Pianos
(125ad) Dampp Chaser
Dampp Chaser Piano Life Saver
(ad) Lindeblad Piano
Lindeblad Piano Restoration
New Topics - Multiple Forums
Rosebud March - Scott Joplin - Pino Marvel visualization
by Erik BerikHerik
03/06/15 01:15 PM
kawai es 100 just purchased
by markiemark
03/06/15 12:08 PM
How would a PX-350 fare using VSTs during live play @ church
by Giancarlo Robles
03/06/15 12:07 PM
How Sheet Music Looks Before & After You Practice
by Piano World
03/06/15 11:19 AM
Full Force -The Story of a City, New York
by Dfrankjazz
03/06/15 10:55 AM
Forum Stats
78,429 Registered Members
43 Forums
162,141 Topics
2,380,542 Posts

Most users ever online: 15,252 @ 03/21/10 11:39 PM
Gift Ideas for Music Lovers!
Find the Perfect Gift for the Music Lovers on your List!
Visit our online store today.

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 - 2015 Piano World ® all rights reserved
No part of this site may be reproduced without prior written permission