On the contrary, the nap is traditionally put in the opposite direction so that the jack will not encounter resistance when trying to return to the "ready" position. David Love davidlovepianos@earthlink.net > [Original Message] > From: Richard Brekne <Richard.Brekne@grieg.uib.no> > To: Pianotech <pianotech@ptg.org> > Date: 3/25/2004 12:11:38 PM > Subject: Re: knuckle orientation > > Roger Jolly wrote: > > > Hi Dave, > > I am chuckling out loud. The debate will start and > > some will get passionate about it. > > Global manufacturing will favor the nap as you have described, but try > > and get a rational reason out of the action makers. <G> > > > > Regards Roger > > > > > Come on guys... EVERYBODY KNOWS that the grain should yeild least > resistance under most stress... ergo the nap goes in the same direction > as the properly regulated jack during the downstroke. > > Shesssh.... :) > > RicB > > > > > > >> I personally don't think it makes a dang bit of difference > >> because the > >> "grain" on most knuckles isn't all that pronounced. Even when trying > >> to rub > >> it both ways to see which way it lies, it's sometimes difficult to tell. > >> However, for consistency, you should install them all the same way > >> (sometimes holding in the light just right and rubbing the leather > >> this way > >> and that will show you which way the nap lies). > >> I just now went out to the shop and checked different makes of grand > >> shanks and two upright butts. They all favored let-off, i.e., the > >> nap lies > >> in the direction the jack travels when letting off. > >> --David Nereson, RPT > >> > >> > >> _______________________________________________ > >> pianotech list info: https://www.moypiano.com/resources/#archives > > > > > _______________________________________________ > pianotech list info: https://www.moypiano.com/resources/#archives
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