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<DIV>Hello Roger,</DIV>
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<DIV>Suddenly many problems in pianos that I've seen in recent times are starting to make sense. And I've seen many overeased balance rail holes--I guess "heard" would describe it better than "seen." </DIV>
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<DIV>Are your findings going to help Bergmans at all...:-)?</DIV>
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<DIV>Thanks for helping the light bulb go on. </DIV>
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<DIV>Dave </DIV> <BR>-----Original Message-----<BR>From: Roger Jolly <roger.j@sasktel.net><BR>To: Pianotech List <pianotech@ptg.org><BR>Sent: Fri, 07 Apr 2006 23:04:57 -0600<BR>Subject: Re: Hammers blocking in Seiler uprights<BR><BR>
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<DIV id=AOLMsgPart_2_dbd7a33a-738f-48c8-afb0-26338ebc8417><FONT size=3><BR>Hi Dave,<BR> You seem to have a good grasp on what is happening.<BR>To illuminate the picture; For argument sake. With a 4mm hole the key feels free, travelling through 5 degrees of arc, with a 7mm hole you start to feel resistance at the 3 degree point. and a firmer push is required to push the action through let off and after touch.<BR>The binding makes it difficult to feel let off, and makes even touch almost impossible<BR> Both Korean manufacturers have tended to over ease the keys to mask the problem. leading to a noisy action, from chucking keys.<BR>After reaming, I have often had to steam the balance rail hole, because the hole had been over eased, masking the hole height problem<BR>Seen the same gross problem in the recent Chinese pianos.<BR>Now for the funny: I have carried the reaming tool around for about 20yrs, and only used it when I did various balance rail hole repairs. In the last 12 months I think I have almost wore it out. ;-) I have hardly used my Yamaha easing tool on any thing but Yamaha pianos.<BR><BR>Regards Roger<BR><BR>
<BLOCKQUOTE class=cite cite="" type="cite"> <BR>Thanks for the detailed response. Very interesting stuff. I'll have to get a 4mm reamer and try this out. You've done all of the legwork already!<BR> <BR>If I'm reading this right, what's happening is the key is not rocking correctly at the pivot point/balance rail due to the overly tall hole, which essentially means the key is acting shorter than it really is...right? And manufacturers have counteracted this by increasing dip to 11mm...? <BR> <BR>I think I'll buy a Seiler just to experiment with in my garage....:-)<BR> <BR>Thanks again! Your generosity is always appreciated!<BR> <BR>Dave </FONT></BLOCKQUOTE></DIV><!-- end of AOLMsgPart_2_dbd7a33a-738f-48c8-afb0-26338ebc8417 --></DIV></DIV></BODY></HTML>