Odd sounding f on the break where 3 meets 2 strings

[oceanobsession]

Just wondered if anyone could offer any advice , my piano is a schiedmayer from 1972
langer 75 action , basically the F last of the 3 strings then goes to 2 strings makes a bap
noise almost like you are hearing the noise from the hitting not the note , its in tune
and touching all 3 strings at the same time , i have improved it by shaping the hammer
in towards the front , the f sharp is also slightly the same but not as bad , the hammer stem on the noisy F is a bit longer to avoid the split dampers , wondered if this could be the problem , the rest sounds great . phil.

[Barrie Heaton]

Can you post a video so we can see and hear the problem


Barrie

[oceanobsession]

How do you post the vidio please cheers phil.

[Barrie Heaton]

See
viewtopic.php?t=9586

[oceanobsession]

ive replaced the hammer rest baize felt which was worn , replaced the 2 split wedge dampers on that F and F sharp which were not in the best condition
checked and adjusted regulation

[oceanobsession]

Hope this works

https://www.flickr.com/photos/188172342 ... ed-public/

Hard to tell from this but your hearing the hammer hit the string as well as hearing the note other notes you hear only the note
so its the hitting sound , its actually like a bap sound almost like the hammer is wide and flat which it is not
although ive had it tuned , does it need a pitch raise , only when i check notes with pano
tuner the low notes are all still low , this could be the pano tuner , if you play the note
soft it sounds better

[Barrie Heaton]

Play the notes chromatically open down and harder.
On a lot of 70s Pianos the change over from the steels to the base is very difficult to hide quite often the soundboard crown is going in that area.

Barrie

[oceanobsession]

Thanks for your advice , one thing ive not tried is the action level , apparently the far
treble hammers are supposed to be set 1/8 below the v bar for best sound and mountings should be level supported by all adjusters , ive also noticed from my own pictures that the front locking nut middle and stud dont look tight and level , so some checks to do there , hoping im going to find the problem , but i can live with it . phil.

[Barrie Heaton]

All hammers should be set so they kill seventh harmonic that can vary, just fractionally on the same model depending how the bridges have been carved.

Modern pianos do tend to be cut with CC Machines but Pianos from the 70s and 80s were hand-carved. So setting the hammer height was rule of thumb not a precise measurement they used to listen to what we were doing. I'm quite often bent the action standards and turn the seating nut, to raise or lower the hammers then add the keys.



Barrie