This is a multi-part message in MIME format. ---------------------- multipart/alternative attachment OK, I haven't read all the posts, but now I think I know what you're = talking about. Locked up flanges on Samick pianos, when you re-pin you = see black stuff on the old pins, right? I've seen a lot of this, like = whole actions or damper underlevers locked up so tight that you can hold = up the underlever parallel to the floor, supporting even the lead = weights while you're holding the flange. Roger says it's an application = of graphite gone bad. I talked to one of their service reps who once = told me that there was tallow in the felt, and that if I just got a = hair-dryer in there and worked the flanges back and forth, they'd free = up. He also said that the flanges must have been exposed to heat at = some time for the tallow, which may be like the lanolin normally found = in wool, to condensense onto the pin. Funny, when I looked at some of = the pins under magnification, it looked like a plating problem to me to. = I work for a dealer who sells samicks, so I'm the one to go out on these = kind of calls a year later. I've also talked to one or two other techs = who did a repin job, only to have the problem return a year later. It's still a problem, but we're seeing it less and less. Kevin. I'm hoping that I'm not responding to something else, but this is a = problem I'm well aware of, anyway. ----- Original Message -----=20 From: Richard Brekne=20 To: Pianotech=20 Sent: Wednesday, March 10, 2004 3:44 PM Subject: Re: ***Re: Nine foot something - quickie hammer centre check Hi Keith forget my last querry about the pianotype.... John suggests plated = pins=20 being the problem... I wasnt awared that Samick used plated centers... = can anybody confirm this one way or the other? Cheers RicB kpiano wrote: >>Black stuff in centerpin bushings ??? sounds like your typical = graphite=20 >>to me. >> >>RicB >> >> =20 >> > >That's what I thought but the way the rest of the piano is, I = wondered. When I pulled some of=20 >the flanges there was paper on both sides of the flanges. sometimes = equal amounts. The guy=20 >that traveled the shanks the second time didn't do any better job = than the first guy. > >While I was reaming the bushings with my new set from Joe Goss, they = were making a squeal=20 >sound. I didn't get out my accutuner so I can't tell you what pitch = it was. Just on a slow push=20 >pull. Does Joe harmonically tune his reamers? Old damper heads from = an upright make a good=20 >set of handles for them.=20 > >Keith Roberts >_______________________________________________ >pianotech list info: https://www.moypiano.com/resources/#archives > > =20 > _______________________________________________ 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/4a/89/65/cf/attachment.htm ---------------------- multipart/alternative attachment--
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