projection

[jolly roger]

Greetings Howard,
                            Power output is a function of how effeciently
the energy is transfered from the key to the string.   ( Flame suit on, I
know over simplification)
Poor centre pinning waste a lot of energy, a critical amount of flange
friction is needed to keep the knuckle in contact with the balancier.
(typically about 4-5 swings)
Next time you find a thin sounding note in the killer octave, try changing
the centre pin before resorting to other methods, you will get a real suprise.
I also forgot to mention, the action frames are soft wood on these
instruments, and key bedding can be a major issue on projection.  This is
another area where some of the energy gets lost.
I have re hammered and shanked many of this model, believe me it is a very
different piano with Abel hammers and Tokawai shank's.   Bigger and warmer
sound.

Another change for  Phil, Mapes are now making the bass strings.

Regards Roger



At 10:06 PM 3/15/01 -0500, you wrote:
>Hi Roger,
>
>You recently wrote:
>
><!--StartFragment-->Check the hammer flange pinning 4-5 swings.  Any more
>and you lose projection.
>
>
>Please elaborate on this. Why would a looser hammer flange pinning cause a
>loss of projection?
>
>
>Howard S. Rosen, RPT
>7262 Angel Falls Ct.
>Boynton Beach, Fl  33437
>
>hsrosen@gate.net
>