Hi J D
Perhaps I did misunderstood but if the hammer is to strike the string at a
right angle it preculdes that the hammer shank will have to slightly
overcenter & that the bore length will be slightly less than the String height
minus the center pin height to achieve this. I'm assuming you may be hanging the
hammers at a right angle to the shank. In order to hit an angled string
plane with the hammer & have the string and hammer at right angles to each
other ,somethings got to give. See what I mean?
Perhaps sharing your boring protocol will clear up what your saying. Was
mine unclear?
SIncerely
Dale Erwin
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. It
might be argued that the shank bends under a heavy blow and therefore
tends to cause the hammer head to under-centre slightly, but given
the rigidity and thickness of modern shanks, particularly the
hornbeam ones, I doubt if this is significant and would need to see a
slow motion movie to be convinced. Nevertheless I think it would be
a valid research exercise for someone with the equipment, if it
hasn't already been done.
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