<!doctype html public "-//W3C//DTD W3 HTML//EN"> <html><head><style type="text/css"></style><title>Re: those pesky swings</title></head><body> <div>I would second Vince's comment here. If you have to repin to make the center tighter, you always need to go up a size to avoid the pin being too loose in the birdseye. My thought about Pro-tek is that nothing could "shrink" the bushing that immediately. I think it lubes only. If you want to shrink the bushing, you have to use alcohol/water and wait a day. If the hammer swings too many times after you apply Pro-tek, then the friction was not caused by tightness, but by the actual friction between the pin and the cloth (I think there's a difference). And, you have to repin if there are 10-12 swings. No way around it. Use those great reamer/burnishers that Don Mannino developed and sells through Schaff. The job's a snap with them.</div> <div><br></div> <blockquote type="cite" cite>I wouldn't put the same size pin in after you ream.  It'll walk.  My experience with protek is that simply putting the next size pin in as you state, will then be too tight, so you'd have to ream and burnish slightly.  That's a good question though - I wonder if protek does shrink the bushing some as well as coat the fibers with its lubricant.</blockquote> <blockquote type="cite" cite><br> <blockquote type="cite" cite><font face="Arial" size="-1">We all know that a hammer is supposed to swing 4 - 8 times. If it is less than 4, then the bushing is too tight. If it's more than 8, supposedly the bushing is not tight around the pin, and that might cause the hammer to wobble up to the string, which will eventually lead to uneven wear on the hammer, whcih creates tone problems, ya da, ya da. <br> <br> So here is the problem. I've got this hammer with only 3 swings. So that mean the bushing is too tight. Before I take the pin out, ream the bushing, and put in the same size pin, I put a little Protec on the bushing. But now, all of a sudden, I've got 10 - 12 swings. According to the above presumption, the bushing is now not tight around the pin any more.<br> <br> Or is it? Has the introduction of Protec shrunk the bushing to the point I need to ream and repin with a larger pin? Or do I leave the original pin in there, and allow the 10- 12 swings?</font></blockquote> <blockquote type="cite" cite><font face="Arial" size="-1"><br></font></blockquote> <blockquote type="cite" cite><font face="Arial" size="-1">Wim</font></blockquote> </blockquote> <blockquote type="cite" cite><br></blockquote> <blockquote type="cite" cite><br></blockquote> <blockquote type="cite" cite><tt>--</tt> <blockquote><font face="New York" color="#0000FF">Vince Mrykalo<i> RPT MPT</i></font></blockquote> <blockquote><font face="Arial Black" color="#0000FF">Senior Piano Technician</font></blockquote> <blockquote><font face="New York" size="+1" color="#0000FF"><b>Crane School of Music</b></font></blockquote> </blockquote> <div><br></div> </body> </html>