At 9:42 am -0400 11/10/06, Erwinspiano at aol.com wrote: >JD wrote >>Broadly speaking I agree with Dale Erwin, as far as he goes, except >>that I aim to have each hammer strike the string at exactly a right >>angle. I don't follow the reasoning as regards over-centring. > >The logic you shareÊshould indicate an error in the approach you suggest. You seem to have misread something... > Since the strings and key bed are not parallel to each other a >hammer mounted at right angle to the shank is going favor hitting >the back side of the hammer striking point. Also altering the bore >distance by making it longer changes the geometry of the entire >action as the capstan & every other reg screw need to be turned >downward. I made no mention in my message of the angle of the hammer-head to the shank. That will depend on a number of factors. What I said was when the hammer hits the string the hammer-head should be at a right angle to the _string_ and this is specially important in the extreme treble. JD
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