John, could you please add a definition of PROFILE? | || ||| || ||| || ||| || ||| || ||| || ||| || ||| jason's cell 425 830 1561 | || ||| || ||| || ||| || ||| || ||| || ||| || ||| On Sat, Jan 9, 2010 at 4:34 PM, John Delacour <JD at pianomaker.co.uk>wrote:<snip> > DEFINITIONS: > > The BASE LINE is a horizontal line parallel with the key drawn through the > balance point of the key. > > KEY DIP: An arbitrary figure of 8mm is taken as the (perpendicular) > downward travel of the front of the (natural) key. (8mm of arc would make a > really tiny difference) > > KEY RISE is defined as the perpendicular distance moved by the contacting > profiles (lever heel and capstan top). > > The KEY FRONT LENGTH is the distance along the base line between the > balance point and a perpendicular drawn from the key front. > > The KEY BACK LENGTH is the distance along the base line from the balance to > a perpendicular drawn from the midpoint of the profile (the top of the > capstan). > > The PROFILE HEIGHT is the perpendicular distance from the mid-point of the > profile to the base line. > > <snip> > JD > > > > > > > -- > ______________________________________________________________________ > Delacour Pianos * Silo * Deverel Farm * Milborne St. Andrew > Dorset DT11 0HX * England > Phone: +44 1202 731 031 > Mobile: +44 7801 310 689 > ______________________________________________________________________ > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://ptg.org/pipermail/pianotech.php/attachments/20100110/4e679efb/attachment.htm>
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