[pianotech] high leverage action

[Gene Nelson]

> What are your Hammer Strike weights
*****10 in the bass and 5 in the treble - no corrective weighting action 
taken yet.

 and key Front Weights ?
*****
30 in the bass and 6.8 in the treble

 Your dip
> and blow say low ratio but your KR and knuckle distance says high. How 
> much aftertouch are you getting with things as they are...
***** about 1.5mm or slightly less.

 how far out
> from under the knuckle does the jack move ?
*****Just enough for drop and aftertouch to happen.
>
> 41 mm is on the short end of the stick to be sure.  I usually dont see 
> under 44 and never allow for less when redoing an action.
***** Do you have a reason for maintaining 44mm or greater blow distance?

Regards,
Gene
>
> Cheers
> RicB
>
>
>    Hello list,
>    Thought that I would seek comments on an action with high leverage.
>    Key dip is 10.5mm and blow distance is 41mm.
>    The touchweights are in the low 50's down and low 30's up.
>    Knuckle spread 16.5mm
>    Key ratio is 1.81
>    Action spread is 113mm and is adjustable.
>    Any more dip will make the sharps about level with the naturals when
>    depressed. The feel of the samples are acceptable. Seems that 41mm
>    blow distance is short - but is it too short? Maybe some loss of
>    power? Is there a down side to this action? Any corrective
>    suggestions? It is in the sampling - disassembled stage.
>    Thanks,
>    Gene
>
>
>