Fred, I would be interested in knowing if you experience the same issues I think Chris Soliday eluded to: the jack back versus the jack forward affects speed. I agree that .5mm is a great deal of discrepancy and should not be there. I deal with a number of Van Cliburn finalists and students from TCU (yes here in the Dakotas). One of their obsessions is speed of repetition. I see how what you are doing can be used with my methods. I am always trying to tweak the performance instruments in my care and I find jacks to be critical to the condition of the piano. Thanks, Tim Coates On Aug 9, 2007, at 3:12 PM, Fred Sturm wrote: > Yes, I agree, a .5 mm difference in alignment (one jack that > much farther forward than its neighbors, for example) is readily > noticeable to a sensitive pianist (and that is the pianist we cauts > are working for, or so I like to believe when I'm not in a cynical > mood <G>). As is a difference in setup of all jacks of the same > dimension. One of my piano profs recently complained about "lack of > positive feel" on her piano. What had I done? Adjusted the jacks > forward a bare smidgen, thinking it was too much resistance (letoff > was too noticeable). I moved them back. She's happy. > Now your everyday amateur probably won't notice that > difference. And it only really shows up when everything is pretty well > refined. But "everything being pretty well refined" is a function of > obsessive attention to many details, of which this is just one. The > total effect is VERY noticeable to just about anyone who can play a > piano. So I don't like to take the attitude that something is "good > enough for the average bloke." It's not that much harder to get every > single unison dead on and solid on every single piano, to give a > different example. And the total effect of that is very noticeable > also. > Regards, > Fred Sturm > University of New Mexico > fssturm at unm.edu > > > > > On Aug 9, 2007, at 10:56 AM, Don Mannino wrote: > >> Ed, >> >> As far as the disagreements go, I'll stay out of it. >> >> Based on your statement about pianists feeling jack alignment, I must >> respectfully disagree. Most pianists with reasonable skill will feel >> .5mm misalignment, but will not be able to identify it as such. It is >> very important to be very even, although the exact best location >> might be debatable. >> >> Don Mannino >> >>> From: caut-bounces at ptg.org [mailto:caut-bounces at ptg.org] On Behalf >>> Of Ed Sutton >>> Sent: Thursday, August 09, 2007 9:04 AM >>> To: College and University Technicians >>> Subject: Re: [CAUT] Black on Black... (Jack alignment) >>> >>> Tim and Fred- >>> >>> Let's see. >>> >>> You guys are disagreeing about the exact placement of 88 little >>> sticks in a 900 pound box. >>> >>> By the time you're done with your adjustments, the result may be the >>> same, or may even vary as much as .7mm! >>> >>> If there is a difference, probably 2 piano technicians in 300 could >>> feel it, maybe 1 pianist in 300. >>> >>> Sounds like a good topic for a Blood Feud! ;-) >>> >>> When I think about the stuff other people do, I think we are pretty >>> lucky to be worrying about jack/knuckle alignment. >>> >>> Anyway, I am grateful for folks who are so passionate about this >>> work. >>> >>> Ed Sutton -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: text/enriched Size: 4653 bytes Desc: not available Url : https://www.moypiano.com/ptg/caut.php/attachments/20070809/42947926/attachment.bin
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