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!
Piano keys do bounce, notice the low bass note bounce. I don't feel it because my finger has released the key before the bounce. It's normal. Piano keys that don't exhibit some bounce are typically stiff harder to play actions that are more sluggish.
Find 660 of Harry's solo piano arrangements for educational purposes and jazz tutorials at https://www.patreon.com/HarryLikas Harry was the Technical Editor of Mark Levine's "The Jazz Theory Book" and helped develop "The Jazz Piano Book."
If repeating a note quickly, it's unlikely that the key would be allowed to come all the way up before being restruck, so the bounce wouldn't happen.
Find 660 of Harry's solo piano arrangements for educational purposes and jazz tutorials at https://www.patreon.com/HarryLikas Harry was the Technical Editor of Mark Levine's "The Jazz Theory Book" and helped develop "The Jazz Piano Book."
Any time there is mass, gravity and/or spring force, and damping, some oscillation will take place. In a grand action, there are several coupled masses, several springs (including felts), the force from gravity, and damping, mostly from the lossiness of the felts.
Find 660 of Harry's solo piano arrangements for educational purposes and jazz tutorials at https://www.patreon.com/HarryLikas Harry was the Technical Editor of Mark Levine's "The Jazz Theory Book" and helped develop "The Jazz Piano Book."
I've noticed the degree of bounciness tends to vary quite a lot in both acoustic and DP actions. I guess it results from the springs trying to return the key back up as soon as possible (allowing fast repetitions), and the weak damping at the top. I liked the ES8 quite a lot when trying it in a shop, but was in fact bothered by its pronounced bounciness. The CA series actions were much less bouncy, and awkwardly the CN29/39 also, despite declaredly the same RHIII action as the ES8. The FP90 action is a bit bouncy but not excessively. I noticed some ES110 owners complain over this.
