Hi, Ric. This is only a guess, but I wonder whether the pianist used a thin strip of felt placed directly behind the balance pins, over the balance punchings, which would alter the balance point of the keys, closing the distance between the capstan and the balance, which would change the key ratio. I don't know how he could ensure the strip wouldn't move, but it sounds like he was able to alter the key ratio quickly and temporarily, and then remove the felt, leaving the action the way he found it. I know of a technique that is similar and effective that uses a strip of thin veneer that is glued directly behind the balance pins, under the punchings. The paper and cloth punchings are then added to adjust to the right key height, and the action has a new key ratio, which translates to less downweight and more upweight. Not factory pretty, but an economical fix, and something that can address altering the key ratio quickly, without moving balance pins, capstans or whippen heels. Like I said, just a guess... John Cavanaugh Director of Piano Technology Oberlin Conservatory On Jan 08, 2008, at 08:09 AM, Richard Brekne wrote: > What.... has no one even heard of this guy ?? Famous Russian > pianist.... does all his recording sessions with some trick involving > a strip of felt placed in the action. We are trying to figure out > what he does. Not possible to get ahold of him and the only tech we > know of that worked sessions with him has passed on. An English Tech > from London of some note. > > Anyone heard of anything do to with this ? > > Ric -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: text/enriched Size: 1604 bytes Desc: not available Url : https://www.moypiano.com/ptg/caut.php/attachments/20080108/412fc2cc/attachment.bin
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