This is a multi-part message in MIME format. ---------------------- multipart/alternative attachment To the list We're repeatedly encountering key-balancing problems when restoring Steinway grand pianos made in Hamburg in the 40's and 50's. Right now we're finishing a German B model from 1957, which received new Renner hammers (complete) and new repetitions. After all due regulations and lubrications, the keys only start moving down, in average, with a 70-gram mass on top of it. Considering there isn't much room for additional lead, and, according to our past experience, if you insist and lead the keys anyway to 47 grams you end up with a reasonable weight, but with a strange touch (the keyboard gets lazy, like you're playing a "rubber action"), so we're wondering WHAT CAN BE DONE to restore the ideal balance of 47g weight and responsive touch." ROGERIO CUNHA - IC MEMBER OF THE GUILD ---------------------- multipart/alternative attachment An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/a5/42/22/d1/attachment.htm ---------------------- multipart/alternative attachment--
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