Yes, David Stanwod has told me that he has methods applicable to uprights. I don't know what they are. Gordon Stelter --- Farrell <mfarrel2@tampabay.rr.com> wrote: > Two questions regarding upright touchweight. > > First is the damper spring influence on touchweight. > Let's say, with dampers lifted off strings and > spoons not ever touching damper lever, touchweight > is right on target - let's say 50 grams DW across > the keyboard and 30 grams UW. Then we release the > damper pedal so that dampers are engaging in their > normal manner. Assuming some normal amount of > friction associated with the damper flange and spoon > riding on the damper action cloth (perhaps about 5 > grams?), is there a range of resistance (or added > DW) that one can expect to encounter in a reasonably > well designed and operating damper system? Stated > another way, how much additional DW should I expect > a well functioning damper to add to touchweight? > > Second is key weighting. Is there any Stanwoodesque > method at arriving at a calculated target balance > weight for an upright key? I can only assume that > manufacturers assemble the piano completely and then > manually weight off the keys by tradional methods. > > Thanks > > Terry Farrell > > > _______________________________________________ > pianotech list info: https://www.moypiano.com/resources/#archives __________________________________________________ Do you Yahoo!? New DSL Internet Access from SBC & Yahoo! http://sbc.yahoo.com
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