[pianotech] Grams, swings and centre pin sizes [was Kawai parts - response]

[Porritt, David]

I agree with you and I frequently (usually) do them this way, I was just alluding to the fact that most technicians tend to be pretty rigid about the "right" way and the "WRONG" way to do anything.  Of course the "right" way is 4 swings!  :-)

dp

David M. Porritt, RPT
dporritt at smu.edu


-----Original Message-----
From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf Of A440A at aol.com
Sent: Thursday, January 08, 2009 7:46 AM
To: pianotech at ptg.org
Subject: Re: [pianotech] Grams, swings and centre pin sizes [was Kawai parts - response]

Dave writes:
<<  No two technicians agree if this is a valid way to pin.  :-)  >>

    Oh, but I do!   I have been pinning this way for a long time. It is fast, 
consistant, and matches the friction to the load.  It takes about 90 minutes 
to repin a complete hammer line and for concert work, is a no-brainer. 
     I am tuning a piano this a.m. that I repinned in 1983.  I did it in the 
winter, and pinned the whole hammerline to swing 6 times, (I keep records on 
the school's repair work). It has been used a lot over the decades.  Last week, 
I found that 90% of the hammerflanges are still between 6 and 7 swings.  Two 
or three were loose as all get out, and one was tight.  
    Consistancy is where its at in pinning.  Pinning by swing can produce as 
consistant a "friction line" as any method I have tried and is faster on the 
bench than any of the others.  What's not to like?.  
Regards. 



Ed Foote RPT 
http://www.uk-piano.org/edfoote/index.html
www.uk-piano.org/edfoote/well_tempered_piano.html
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