This is a multi-part message in MIME format. ---------------------- multipart/alternative attachment ----- Original Message -----=20 From: Erwinspiano@AOL.COM=20 To: pianotech@ptg.org ; Davehugh@email.msn.com=20 Sent: January 22, 2002 9:50 PM Subject: Re: Baldwin Accu-Just Hitch Pins--General Information . I read John Hartmans articles on the subject in the journal and = no disclaimers there as to the specifics you mentioned. I read all of = Nick Gravagnes info on the subject many times as to the 1& 1/2 degree = method which doesn't really work. No disclaimer there and yes I used = that for a while with less than satisfying results. My point is that = unintentional dis- information occurs unfortunately. Now, see? That's just what I mean. Obviously Nick's specification worked = for him using his boards, his process and his shop conditions. There = was/is enough different in what you were/are doing to make the results = less than satisfactory to you. From his perspective it probably wasn't = disinformation.=20 Although prestressing isn't as sceintific as measuring rib = height ,tension, beam strength, and resultant angle of deflections for = bearing values , it does work. But that's not to say that I'm = uniterested in calculating bearing in that manner. I just haven't gotten = there yet. I would love to compare the end results using both methods = and will. I wasn't suggesting that you should measure all this stuff. But, I'll be = you compensate in some manner for it all. Whether you do it consiously = or intuitively is another issue. As a matter of interest to me we both stated we would apply more = bearing on the Baldwin system than the factory specs. suggested. The = accujust info. was concise. Well, I have had a bit of experience with them, albeit some time back. = (And I'd also like to see a bit more crown in those ribs.) Del ---------------------- multipart/alternative attachment An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/3b/54/c4/44/attachment.htm ---------------------- multipart/alternative attachment--
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