This is a multi-part message in MIME format. ---------------------- multipart/alternative attachment There are quite a few of the cheaper spinets have this problem from the manufacturer. American and Canadian ones, made around the 70's. It appears that the holes for the pins in the bass, did not have enough of an angle on them, to accommodate the angle of the string. I thought I could fix this problem once, by backing off the string, removing the coil, and backing out the pin. Guess what, it didn't work, as the string, had already been weakened at that spot. They broke anyway. Another reason it could have happened, is, hammering the pins in deeper, to gain a bit more friction, for loose pins. I now try to remember, to look for this problem, and point out to the customer, that some strings may break, due to the construction of the piano. They don't always believe me, since none have broken, so far. They don't realize that because they left it so long, and I have to do a pitch raise, that they exasperated the problem. You can't explain it to the ones that don't want to believe. The fix, plug, and rebore the holes. So far no one has taken me up on the fix. John M. Ross Windsor, Nova Scotia, Canada jrpiano@win.eastlink.ca ----- Original Message ----- From: Dave McKibben To: Pianotech Sent: Sunday, October 30, 2005 12:02 PM Subject: acrosonic string breakage List: I just tuned a Baldwin acrosonic that by S/N was 15 years old, but it appeared to be older. My question revolves around the attached picture ( as best I could draw the problem ). The strings A2, A#2, G2, G#2, F2,F#2 and C3 all broke when doing an 80-100 cent pitch raise. I warned the owner that I could tune it to less than A440 to help reduce string breakage but she wanted it at A440 so she could play with other instruments. All the strings were on the bottom row of tuning pins, which creates a steeper angle to the Vbar. The angle to the Vbar was so great, that the last coil on the pin was trying to cut across the previous adjacent coil on the tuning pin. ( see pic ). It appeared to me THAT is why the strings broke, each one right at the pin coil. It did NOT appear that the pins were pounded in, creating a steeper angle. My question is: Is this normal pin / string coil configuration for acrosonics? has anyone seen this before, and what might the problem and fix be? I'm sure someone on here knows the answer ! Thanks much Dave McKibben ------------------------------------------------------------------------------ _______________________________________________ pianotech list info: https://www.moypiano.com/resources/#archives ---------------------- multipart/alternative attachment An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/63/dd/33/f2/attachment.htm ---------------------- multipart/alternative attachment--
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