Air hammers for Pin torque

[Barrie Heaton]

Hi Diane,

I am Please some one  reads the history page  -


  I think a lot also depends on the height,  I find grands more 
comfortable to restring the uprights because the level of pins is at a 
more comfortable level for me.

The only down side is the noise level with any air tools,  next door 
would love me if i used one at 7 am :-)

Barrie,


In article <LAW-F99GKxhBK6Qajbt000091f3@hotmail.com>, Diane Hofstetter 
<dianepianotuner@hotmail.com> writes
>Hi Barrie,
>
> I like your history website!  You've sure done a lot of work on it.
>
> I believe that a primary cause of the better and more consistent torque is
>from it being hit by many small blows rather than a few heavy ones.  True,
>the pin does go in straighter all the way.  Also the number of blows is
>probably more consistent.  The hammer hits at regular intervals and the
>distance each pin has to go down is the same.  I notice that when I string
>with a sledge, I tend to use differing numbers of hits with the hammer,
>depending on how tired I am!
>
> (A lot less tired with an air hammer!)
>Diane
>
>
>>From: Barrie Heaton <Piano@forte.airtime.co.uk>
>>Reply-To: pianotech@ptg.org
>>To: pianotech@ptg.org
>>Subject: Re: Air hammers for Pin torque
>>Date: Mon, 23 Oct 2000 19:54:52 +0100
>>
>>In article <002601c03bda$5aaa6680$bd3c070c@delsmachine>, Delwin D
>Fandrich
>><pianobuilders@olynet.com> writes
>>>
>>>----- Original Message -----
>>>From: "Diane Hofstetter" <dianepianotuner@hotmail.com>
>>>To: <pianotech@ptg.org>
>>>Sent: October 21, 2000 12:10 PM
>>>Subject: Re:Air hammers for Pin torque
>>>
>>>
>>>>Around the time I started stringing with an air hammer, I mentioned it at
>>>a
>>>>PTG meeting.  After the meeting, Laroy Edwards came over and told me
>that
>>>at
>>>>the Yamaha factory they had discovered they got better and more
>>>>consistent
>>>>pin torque with an air hammer.
>>>>Diane
>>>>
>>>-----------------
>>>
>>>This has been our experience as well.
>>>
>>>Del
>>>
>>>
>>
>>Could it be because there is no side impact to the pin,  as you get with
>>the arching effect  with  a normal hammer - so the pin or punch is not hit
>>square each time.
>>
>>Barrie,
>>--
>>Barrie Heaton      PGP key on request           http://www.a440.co.uk/
>>AcryliKey Ivory Repair System UK ©              http://www.acrylikey.co.uk/
>>The U.K. Piano Page ©
>>http://www.uk-piano.org/
>>                                  Home to the UK Piano Industry
>
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-- 
Barrie Heaton      PGP key on request           http://www.a440.co.uk/
AcryliKey Ivory Repair System UK ©              http://www.acrylikey.co.uk/
The U.K. Piano Page ©                                   http://www.uk-piano.org/
                                  Home to the UK Piano Industry