 |
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!
|
|
52 members (c++, DavidTell, AndrewJCW, BeWater, Abdol, Bill McKaig,RPT, DigitalMusicProduc, 36251, Beowulf, 14 invisible),
573
guests, and
499
robots. |
Key:
Admin,
Global Mod,
Mod
|
|
 Action sticker jams capstan screw
|
Joined: Jul 2020
Posts: 3
Junior Member
|
OP
Junior Member
Joined: Jul 2020
Posts: 3 |
Wondering what I am missing to solve this problem.
Resurface keys and replace felt punchings on upright hobart-cable acoustic piano. When I went to return the keys, the action connection at the sticker/capstan screw became too tight, no room for movement (all keys). Removed the action. Redid the punchings with thinner version. Still no room. Previously replaced the bridle straps. They had all been eaten away.
I have returned the action to it's place by lowering into the 'action bracket into it's bolt' yet still there is not enough play for key movement.
Wondering what I am not understanding. This is my first attempt to rehab a piano. I have the book "Piano Servicing Tuning & Rebuilding" by Arthur A. Reblitz, which is useful and useless at the same time.
Thank you.
|
|
|
 Re: Action sticker jams capstan screw
|
Joined: Jun 2003
Posts: 29,094
Yikes! 10000 Post Club Member
|
Yikes! 10000 Post Club Member
Joined: Jun 2003
Posts: 29,094 |
Are the jacks in front of the butt felts? If they are under them, which can happen if the bridle straps do not hold the wippens up high enough, then when you press the key, it just pushes the jack into the butt felt. Bend the bridle strap wires to adjust this.
Semipro Tech
|
|
|
 Re: Action sticker jams capstan screw
|
Joined: Feb 2002
Posts: 1,479
1000 Post Club Member
|
1000 Post Club Member
Joined: Feb 2002
Posts: 1,479 |
What BDB said. The bridal tapes are too long / not adjusted tight enough. Look at the jacks.
Otherwise, something isn't right with that keyboard! :-)
Don Mannino, MPA Kawai America
|
|
|
 Re: Action sticker jams capstan screw
|
Joined: Jun 2003
Posts: 29,094
Yikes! 10000 Post Club Member
|
Yikes! 10000 Post Club Member
Joined: Jun 2003
Posts: 29,094 |
One other possibility is that it used to be a player piano, and the lever that locks the keys up has been flipped. It probably is not the case, but I mention it in case someone else has this problem.
Semipro Tech
|
|
|
 Re: Action sticker jams capstan screw
|
Joined: Jul 2020
Posts: 3
Junior Member
|
OP
Junior Member
Joined: Jul 2020
Posts: 3 |
I think you might be correct in that the jacks and butt felts are not aligned correctly. However, simply adjusting the bridle strap does not appear to be the solution. I did pull the jacks to the front. That was the issue. But now some don't stay quite right, and the hammers(?) don't rest against the felt. I am beginning to understand the statement, 'an enormous number of possible adjustments'. Thank you for your help.
|
|
|
 Re: Action sticker jams capstan screw
|
Joined: Jun 2003
Posts: 29,094
Yikes! 10000 Post Club Member
|
Yikes! 10000 Post Club Member
Joined: Jun 2003
Posts: 29,094 |
The jack tips need to be in front of the butt felt, not below it, and not so high that they touch the butt leather when the hammer shanks are on the hammer rail. The bridle strap wires are bent so that the straps hold the jacks at that level when the action is out of the piano.
Semipro Tech
|
|
|
 Re: Action sticker jams capstan screw
|
Joined: Feb 2017
Posts: 3,682
3000 Post Club Member
|
3000 Post Club Member
Joined: Feb 2017
Posts: 3,682 |
When you replaced the bridle straps did you check the length of the new parts relative to the originals? When you hooked them up to the wire did you trip the jack forward and lift up the whippen before hooking on to the wire? Did you check to be sure that, at rest, the tip of the jack is in approx the center of the butt felt? I believe all of these are addressed in that book.
If you have now messed with the action rest bolts (if I am reading your post correctly) you may have adversely affected the strike point and compromised the damping action. Those bolts should never be changed (hardly ever). If I am mis-reading things then just ignore what I just said. But if I am not mis-reading then your situation may become very complicated.
Peter Grey Piano Doctor
|
|
|
Forums42
Topics204,277
Posts3,047,101
Members100,069
|
Most Online15,252 Mar 21st, 2010
|
|
|
|
|
|