ratio question

[David C. Stanwood]

Ed asks:

>Why is there is a distinct difference in feel between two actions that 
>achieve the same ratio with different knuckle distances?  Ie.  you can
arrive at 
> the same overall action ratio with a 15.5 mm knuckle distance and a short
key 
> ratio as you can with a 17 mm knuckle distance and a longer key ratio,
but 
> the response of these two actions are NOT the same. 

Ed,

Need more info to begin a discussion here... How do the Strike Weight
levels, Front Weight Levels, and Friction levels compare? These factors
effect response quality.  Do they both regulate to the same blow distance
with matching key dip?  (A difference in the distance-ratio/weight-ratio
ratio would indicate a difference in geometric efficiency between the two
actions.)  How would you describe the qualitative difference in response
between these two actions?

David Stanwood