----- Original Message ----- From: "Ron Nossaman" <rnossaman at cox.net> To: "Pianotech List" <pianotech at ptg.org> Sent: Sunday, October 28, 2007 10:40 PM Subject: Re: Steinway balance rail bearings > >> You can lift the felt and slice off some of the wood of the bearing to >> mimic the half-punching trick--more work than a strip of veneer. > > ??? The half dowels already precede, rather than mimic, the half punching > trick without modification. Is there a measurable difference with the > slice? Guess so. Bob Marinelli suggested it in a class--or was it the bar? :-) I talked to a tech at CERS who had tried it, he said it made a difference. Sorry, I can't tell you how much difference it made and I don't have any pianos with bearings handy to experiment with. Why don't you give Bob a call? > > > > Someone said to me once that the bearings increased pulley key >> syndrome. I have no idea. I have seen pulley keys on so many different >> kinds of pianos, that I can't offer any proof that bearings are a cause >> of that problem. >> >> Barbara Richmond, RPT > > Someone said to me more than once that "If you cross your eyes, they'll > stick like that." I tried it, and they didn't. When what someone tells you > doesn't make logical sense, and doesn't pass the empirical BS test, it > likely is (BS). Yes, well I was young and impressionable back then--like now... Ahem. I can't even remember who it was and usually I'm pretty good at that information. I wonder what percentage of pulley keys are caused by someone trying to solve some other weight/friction/geometry problem by over-easing keys and balance holes. That's a rhetorical question, BTW. ;-) br
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