center pinning question

[Allen Wright]

David,

I suppose original pins must be metric, but I haven't bought a metric  
micrometer here yet. They both come up as being .051 on my  
micrometer. Exactly the same, as far as my mic can see.

Allen
On May 15, 2008, at 10:09 PM, David Ilvedson wrote:

> 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
>
>
>

Allen Wright
London, UK

http://www.broadjam.com/akwright




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