Hi Bob I nearly always repin new flanges when installing. I've heard all the arguments back and forth... seen a few demonstrations from manufacturers as to how meticulous they are.... and nevertheless always find about half of any given set of flanges either too loose or too tight. I go for a safe 5-7 swing window using german "silver steel" centers. Interestingly enough, it is the position of the Yamaha factory that wooden flanges with felt bushings remain quite stable with regards to tightness as (they say) the reactions of the wood holes, and felt bushings are very close to exactly opposite to climatic changes. Indeed they argue against Kawaiis (and others) use of plastic flanges very much on this basis. I dont find any real change in tightness in flanges due to climatic change, but I do find change in friction levels on some pianos. That might seem a strange comment, but if you think about it... friction is easily caused by matters not related to tightness perse. RicB Bob Hull wrote: >List, > >I was preparing a new set of shanks and flanges for an >action rebuild (a recital hall piano)and found that >the pinning maybe too loose. Many of them will swing >8-10 times before coming to a stop; some will swing 11 >- 12 and a few 7 times. These are high quality parts >from a reputable manufacturer. The humidity in my >shop is in the mid 50's. When winter comes and the >humidity in the recital hall drops way down won't >these be to loose? I was looking for about 3-5 swings >in the bass graduating up to about 7 max. in the >treble. > >I am facing a deadline and may need to get another set >sent if the manufacturer agrees which will cost me at >least 2 days. > >Would you repin, reorder or what? > >Bob Hull > > > > >__________________________________________________ >Do You Yahoo!? >Tired of spam? Yahoo! Mail has the best spam protection around >http://mail.yahoo.com >_______________________________________________ >pianotech list info: https://www.moypiano.com/resources/#archives > > >
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