Free key return
Good morning! The other day I asked myself a question I had never thought about before, prompted by a young student. Why is the release of the key after pressing it, so that it returns freel...
- Replies
- 7
- Views
- 1.208
The Piano
Piano technology
Guide to the construction technology of grand and upright pianos
- Discussions
- 233
- Posts
- 1.407
Conversations
Discussions
Pedal mechanism
Hello everyone, I need to complete a mechanical engineering thesis on the actuation and operation of one of the 3 piano pedals (or 4 as in Fazioli). I need to study the various forces involv...
- Replies
- 4
- Views
- 1.196
Latest post R RenziD
String tension
Hi, I would like to know the formula to calculate the tension of a specific string in a grand piano. Furthermore, I was wondering if the tension force for the same string changes between a s...
- Replies
- 0
- Views
- 377
Latest post R RenziD
Sommelier
Hi, how were Bechstein soundboards made in 1935? Were they sandwich construction with cross-grained plywood or was it a single solid piece? Can you tell me the pros and cons of enclosed vs o...
- Replies
- 6
- Views
- 1.073
Latest post R RenziD
Linked or unlinked action in a grand piano
Hi, can you explain exactly what is meant by decoupled action (meccanica slegata) and what linked action (meccanica legata) means? If I understood correctly, the Herz-type action is linked a...
- Replies
- 6
- Views
- 1.006
Latest post S sergio2
Return Weight
Hello, this is my first time writing and I would first like to congratulate you on your beautiful and useful initiative. I would like to ask if it is possible to calculate the key return wei...
- Replies
- 56
- Views
- 13.343
Latest post
pianoexpert
Steinway differences
Hi, I would like to know the difference between the Hamburg version Steinway and the American version Steinway? Thank you
- Replies
- 4
- Views
- 628
Latest post
pianoexpert
Capo d'Astro vs Agrafes in grand pianos
Hi, from a construction standpoint, why do certain piano manufacturers in the last two sectors install the Capo d'Atro (see Steinway) while using Agrafes (on all strings, see Bechstein)? Wha...
- Replies
- 1
- Views
- 440
Latest post
pianoexpert
Mallet holder
Hello, could you please explain to me what the difference is in terms of timbre/sound and from a technical point of view between a hammer mechanism with felt underneath and a hammer mechanis...
- Replies
- 5
- Views
- 681
Latest post
pianoexpert
Grand piano stick
Hi, do you think it makes sense to modify the plate in a 1932 1/4 grand piano with a double plate? I will use the piano at home. The dealer told me that in his opinion it is a waste of money...
- Replies
- 1
- Views
- 399
Latest post
pianoexpert
Ponticello
Hi, I would like to know why in the first photo there is a grey area under the strings below the bridge, while in the second there is nothing or it is transparent. The second photo is of a r...
- Replies
- 1
- Views
- 304
Latest post R RenziD
Information/problems regarding antique/restored piano
Hi, I would like to know your opinion on a few matters: the hammers of old German pianos are not felted because this creates a fuller and sweeter sound typical of the period. Is that true? t...
- Replies
- 1
- Views
- 356
Latest post
pianoexpert
Benchein piano serial number
Hello everyone, can you tell me where to find a website to compare a serial number for a C. Benchein piano to find the year of construction of the instrument? Thank you Denis
- Replies
- 4
- Views
- 410
Latest post R RenziD
Grand piano various issues
If the left pedal of a grand piano is stiff, what kind of intervention do you recommend I apply? If the action moves when pressing the right or left pedal on an antique piano, how do you rec...
- Replies
- 3
- Views
- 373
Latest post
pianoexpert
Cracked soundboard
Hi, I wanted to ask for some information: if a soundboard is cracked, can it be repaired? The tuner told me that the crack must be widened, wood inserted inside, and then a joint inserted. F...
- Replies
- 1
- Views
- 482
Latest post
pianoexpert
Fazioli piano specifications
Is it possible to have the specifications for Fazioli pianos? Thank you Denis
- Replies
- 1
- Views
- 349
Latest post
pianoexpert
Benchstein Pianos
Hi, I am a newcomer and I would like to know your opinion on Bechstein grand pianos from the 30s-40s with Renner action? Thanks
- Replies
- 1
- Views
- 319
Latest post
pianoexpert
Key depression
Hello, I would like to know if a shorter key dip helps in the execution of trills, repeated notes, etc... That is, if a 9mm dip would return the key to position faster than an 11mm dip, thus...
- Replies
- 16
- Views
- 1.469
Latest post G Gib
Steinway & Sons Specifications
Good morning everyone, i am a pianist and I would like to get to know the piano better, in particular I would be interested in the specifications of the Steinway model D, such as the measure...
- Replies
- 9
- Views
- 4.672
Latest post R RenziD
Yamaha vs Kawai mechanical doubts
Hi, I would like to purchase a used grand piano. I have watched your video on choosing used pianos by Piano Expert over and over again, and it was a real eye-opener. In the shop, I found som...
- Replies
- 5
- Views
- 1.937
Latest post
francescochopin90
Difference in damper felt
Hello, what changes if on a damper the red underfelt is only under the damping felt (the white one, to be clear) and not along its entire head? Leaving the space between the two felt pads wi...
- Replies
- 4
- Views
- 669
Latest post G Gib
Purchasing a custom hammer rail, or what?
Hello everyone. I need some advice. The piano, a 90s Schimmel 208, had a NON-original action upon purchase (Abel, which I still keep) whose sound and touch did not satisfy me, regardless of...
- Replies
- 4
- Views
- 686
Latest post
pianoexpert
Hammer Replacement
Is a partial replacement of the hammers possible, or is it necessary to replace the entire hammer rail?
- Replies
- 1
- Views
- 603
Latest post
pianoexpert
Keyboard problems
Good morning, I am writing here to share the experience I am having with my piano in search of answers. Some time ago, I purchased a Yamaha U3H upright piano. I am realizing that I have some...
- Replies
- 3
- Views
- 731
Latest post
pianoexpert
Mechanical doubts
Hello everyone, I would like your opinion on Kawai mechanisms from the '70s made of ABS Styran. Are they reliable in terms of robustness and durability over time?
- Replies
- 7
- Views
- 1.050
Latest post
pianoexpert