Its not a stupid question, but its also not a universal answer either.
For the action to open fast enough but not rebound also must not be too heavy for the player, lets face facts, you can put a spring in which exhibits 300 grams of resistance to the movement of the key, but imagine trying to move 300grams of weight with just a finger tip for an hour session of playing. You would have cramps within minutes of playing
I have measured force required to close keys and force required for fast actions, this was done with local musicians, telling me what they like and dislike
A key can close and lift its own weight and be a very comfortable light action with as little as 30 grams of force applied, however the key to pad relationship must be perfect, no ifs or buts """perfect""", as 30 grams is not enough force to seal the tone hole and overcome a pad which closes at one point before another point
90 grams is a nice action, fast with some forgiveness to accomodate very minor discrepancys in closing sequence. Very minor.
120 grams is a fast action, some rebounding can occur, pads closing at one point before another is relly not to much of an issue.
150 grams is uncomfortable to the average player. Heavy feeling to the keywork.(side note, I find a lot of the older yamaha 23's exhibit tensions of around the 150, be that becuase they came out like that or be that becuase repairers have oversprung the action, I cannot answer)
Hope that helps with your question
For the action to open fast enough but not rebound also must not be too heavy for the player, lets face facts, you can put a spring in which exhibits 300 grams of resistance to the movement of the key, but imagine trying to move 300grams of weight with just a finger tip for an hour session of playing. You would have cramps within minutes of playing
I have measured force required to close keys and force required for fast actions, this was done with local musicians, telling me what they like and dislike
A key can close and lift its own weight and be a very comfortable light action with as little as 30 grams of force applied, however the key to pad relationship must be perfect, no ifs or buts """perfect""", as 30 grams is not enough force to seal the tone hole and overcome a pad which closes at one point before another point
90 grams is a nice action, fast with some forgiveness to accomodate very minor discrepancys in closing sequence. Very minor.
120 grams is a fast action, some rebounding can occur, pads closing at one point before another is relly not to much of an issue.
150 grams is uncomfortable to the average player. Heavy feeling to the keywork.(side note, I find a lot of the older yamaha 23's exhibit tensions of around the 150, be that becuase they came out like that or be that becuase repairers have oversprung the action, I cannot answer)
Hope that helps with your question
