>Why are so many piano makers still using the butterfly type rep. lever
>spring?
It has proven to be the best design from a repetition standpoint.
Once learned, techniques for adjusting are quick and easy.
It's also elegantly simple in construction.
If your having trouble adjusting the butterfly type spring, seek the advice
from someone who know's how to adjust them.
My best tool is made from a mute wire handle, copied from a regulator at
Steinway.
D Stanwood
David C. Stanwood Stanwood@tiac.net
West Tisbury, Massachusetts USA
On the Island of Martha's Vineyard
"The art in hammer making has ever been to obtain a solid,
firm foundation, graduating in softness and elasticity toward
the top surface, which latter has to be silky and elastic in
order to produce a mild, soft tone for pianissimo playing, but
with sufficient resistace back of it to permit the hard blow of
fortissimo playing." - Alfred Dolge 1911
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