Such explicit and colorful layerings of sound as Mr. Pollini brought to bear in the Sonata No. 2 in B-flat, Op. 35 (1837-39) would not have been possible on most concert grands. The very fast tempi in some places, such as the concluding fourth movement, Finale: Presto, were entirely devoid of piano clatter ...
I am trying to bring a 1905 grand up to scratch. It was reconditioned about 4 years ago.
The techniques described in the current thread about accurate let-off have done wonders for its touch, but there is still quite a lot of clatter. Much of the noise occurs as the keys come back to their rest position after release.
Some keys are worse than others. The keys need re-bushing, and the front pins putting back straight, but I suspect that will not be the whole answer.
Previous threads suggested these causes of clatter:
- knuckle hardness
- jack adjustment cushions
- balancier button cushions
- shank noise on rest rail due to loose pinning
- compression in the felt footing of the wippen heel
- hard backrail felt
Worn balance rail punching?
Is there anything to add to this list, and what might Signor Fabbrini be doing to reduce piano clatter to an absolute minimum?