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 _________________________________________________________________________ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com. Share information about yourself, create your own public profile at http://profiles.msn.com.
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