Just to make sure I'm on the same page here... Your center rail to capstan, magnet and keytop are taken as in the following example Top of the key front minus 10 mm to bottom of key at center of the balance rail pin hole ? Thanks.. RicB Ron Nossaman wrote: > Well, I wasn't interested in building an absolute theoretical piano model. > I was just going to demonstrate as simply as possible the effects of the > levers at work here. These are the figures from my own model and a guess of > magnet weights. They'll suffice for the illustration. > > The first group defines leverage ratios and weights. > > center rail to magnet moment3 95 > center rail to capstan moment2 120 > keytop to center rail moment1 220 > wip center to capstan moment4 63 > wip center to magnet moment5 80 > keytop to capstan lever1 0.55 > keytop to magnet lever2 0.43 > wip center to magnet lever3 1.27 > magnet weight 0.8 > wippen magnet assy weight 4.6 > key magnet assy weight 1.6 > -- Richard Brekne RPT, N.P.T.F. UiB, Bergen, Norway mailto:rbrekne@broadpark.no http://home.broadpark.no/~rbrekne/ricmain.html http://www.hf.uib.no/grieg/personer/cv_RB.html
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