center pinning question

[David Ilvedson]

Don't they have metric center pins in Europe?   Is there a comparison available?

David Ilvedson, RPT
Pacifica, CA  94044

----- Original message ----------------------------------------
From: "Allen Wright" <akwright at btopenworld.com>
To: "Pianotech List" <pianotech at ptg.org>
Received: 5/15/2008 12:24:37 PM
Subject: Re: center pinning question


>Dale,

>No, it's Hamburg.

>Allen
>On May 15, 2008, at 2:00 AM, erwinspiano at aol.com wrote:

>>    Hi Allen
>>   first things first.
>>   IS it an American Stwy?  If so factor in the vertigris  
>> equation.......if not .....nevermind.
>>   Dale
>>
>>
>> -----Original Message-----
>> From: Allen Wright <akwright at btopenworld.com>
>> To: Pianotech List <pianotech at ptg.org>
>> Sent: Wed, 14 May 2008 4:27 pm
>> Subject: center pinning question
>>
>> In repinning an old (1930's) Steinway M, quite a few were loose. I  
>> found that replacing the old pins with the exact same size (but  
>> new) pins was producing just the amount of friction needed - and  
>> even in some cases adding too much, so that I had to ream with my  
>> "Mannino" burnishing files. Any theories on how that happens?  
>> Something to do with the nap of the cloth changing in the process,  
>> or perhaps the angle of the pin changing in the bushing, or (even  
>> more unlikely) that somehow only the outer edges of the pin are  
>> slightly worn on the old pins? (These are the various ideas me and  
>> my colleagues were coming up with to explain the phenomenon).
>>
>> Thanks, and I'll take my answer off the air...   : )
>>
>> Respectfully,
>>
>> Allen Wright. RPT
>>
>> =
>> Plan your next roadtrip with MapQuest.com: America's #1 Mapping Site.

>Allen Wright
>London, UK

>http://www.broadjam.com/akwright