On 28-jan-2007, at 23:17, Alan R. Barnard wrote: > Greetings, > > Reading Reblitz's book, his step #8 to reguating a vertical > states to shim up the hammer rest rail to the correct blow > distance. My question is, if this is done then arent you tampering > with/advancing the stroke and infringing upon the room/space in > which the parts need to cycle? Seems to me, if a piano is an old > upright, wouldnt it be wise to first at least replace the felt > front and balance rail punchings, before you go ahead and set the > stroKe?? > > Julia Gottshall > Reading, PA Hi Julia, A pianist starts playing the pianos by touching the keys. Therefor, his or her initial contact with a piano starts with depressing keys. The touch and feel of any piano is the most important moment to any player of this kind of instrument. Generally speaking, the piano industry has come to a sort of agreement that key dip should be very close to around 10 mm, give or take. This at least is a very important issue. So, if we can accept that key dip, generally speaking, is 10 mm, than it means that hammer travel, or blow distance, is around 1:5 which means 10 mm : 50 mm. In practice this is not true, because the hammer striking distance is always less. If we don't know any better, than we may assume that our striking distance gauge tells us what the correct hammer striking distance SHOULD be. However, if we can accept that key dip is something we don't tamper with, than the hammer striking distance depends on what the action allows for. A more firm front punching like the Wurzen front punching in fact tells us exactly what a key dip of 10 mm means. without any compromise. If you stick to this, and follow up on the normal regulation procedure, a 'blow distance' of around 46 mm will be more or less correct. There is more to it, but life is tough enough. OOR friendly greetings from André Oorebeek Antoni van leeuwenhoekweg 15 1401 VW Bussum the Netherlands tel : 0031 35 6975840 tel : 0031 652388 008 concertpianoservice at planet.nl www.concertpianoservice.nl where music is, no harm can be -------------- next part -------------- An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/20070129/6d50005f/attachment-0001.html
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