> I am doing my first grand regulation and have a question. If the > whippen and key capstan have "lost motion" thereby making the key > levels have all different heights, then does turning the capstan take > care of the key levels as well as adjust the hammer blow distance? In > other words are they one and the same adjustment? > > Without having a spec manual, is there a general rule of > thumb for obtaining the correct hammer blow distance on grands? The > piano is a Hazelton Brothers 6' grand. > rookie, > Julia Gottchall, > Reading, PA Julia, With correct key dip, 3/8", 7/16"--(your preference) let off @1/16" adjust the capstan to achieve correct after touch and don't worry about the blow dimension. Of course the action can't have serious geometry problems and there are many more steps to grand regulation such as prepping to eliminate excess friction etc. ,but I consider key dip and let off the "sacred" dimensions and after touch the proof of correct blow. Tom Driscoll
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