---------------------- multipart/alternative attachment 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. >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. > >>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. >> >>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. >> >>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? >> >>Wim > > >-- >Vince Mrykalo RPT MPT >Senior Piano Technician >Crane School of Music -- ---------------------- multipart/alternative attachment An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/caut.php/attachments/53/5b/c2/1e/attachment.htm ---------------------- multipart/alternative attachment--
This PTG archive page provided courtesy of Moy Piano Service, LLC