<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META http-equiv=Content-Type content="text/html; = charset=iso-8859-1"> <META content="MSHTML 6.00.2800.1264" name=GENERATOR> <STYLE></STYLE> </HEAD> <BODY> <DIV>Perhaps another good way = to evaluate a knuckle-to-center-pin distance match would be to adjust let-off = so it did not occur, replace the front key pin punchings and felt = with a block of wood, and then carefully measure hammer rise for a full key = depression. The wood under the key at the front rail pin will ensure a repeatable = key depression amount, and if the effective knuckle distance is the same on = both the old and new shanks, the hammer rise will be exactly the = same.</DIV> <DIV> </DIV> <DIV>Terry Farrell</DIV> <DIV> </DIV> <DIV>----- Original Message ----- <DIV>From: "David Love" <<A href="mailto:davidlovepianos@earthlink.net">davidlovepianos@earthlink.net</A>></DIV> <DIV>To: "Barbara Richmond" <<A href="mailto:piano57@flash.net">piano57@flash.net</A>>; = "Pianotech" <<A href="mailto:pianotech@ptg.org">pianotech@ptg.org</A>></DIV> <DIV>Sent: Wednesday, March 10, 2004 11:31 PM</DIV> <DIV>Subject: Re: [Files] knuckle = pic</DIV></DIV> <DIV> </DIV>> I have a sample kit of Abel parts that I got from Wally Brooks.  Basically, > I weighed the strike weight of the = hammer assembly on a sample note and > also measured the corresponding = balance weight ((UW + DW)/2).  Then I took > a sample shank and = wrapped a piece of lead solder around the end of the > shank to duplicate = the SW of the original sample (easier than trying to > find a hammer just = the right weight).  Put it on the piano and measured the > balance = weight again.  It was closest to the original with the 18mm = flange. > Abel and Renner both make a 17mm flange but only Abel makes an 18 mm > flange.  Since there was a bit more lead in the key than I would = like at > the target strike weight for that note, I opted for the 18mm = flange. > Double checked the regulation as well. > > David Love > <A = href="mailto:davidlovepianos@earthlink.net">davidlovepianos@earthlink.net</A> > > > > [Original Message] > > = From: Barbara Richmond <<A href="mailto:piano57@flash.net">piano57@flash.net</A>> > > To: <<A href="mailto:davidlovepianos@earthlink.net">davidlovepianos@earthlink.net</A>>; Pianotech <<A href="mailto:pianotech@ptg.org">pianotech@ptg.org</A>> > > Date: 3/10/2004 8:19:07 PM > > Subject: Re: [Files] knuckle = pic > > > > So, David, what did you do?  Did you measure, = figure what was close and > buy > > some samples? > = > > > Barbara Richmond > > > > ----- Original Message = ----- > > From: "David Love" <<A href="mailto:davidlovepianos@earthlink.net">davidlovepianos@earthlink.net</A>> > > To: "Pianotech" <<A href="mailto:pianotech@ptg.org">pianotech@ptg.org</A>>; = <<A href="mailto:files@ptg.org">files@ptg.org</A>> > > Sent: Wednesday, March 10, 2004 8:46 PM > > Subject: RE: [Files] = knuckle pic > > > > > > Speaking of which, I am = replacing a set of these on an AB Chase.  One of > > the challenges of = these knuckles is trying to determine just where the > > leverage = point is.  You don't exactly have the normal core/center pin > > = dimension to reference.  It appears, however, from my initial = trials, that > > it corresponds most closely to a C-18 shank from Abel, = i.e. a Mason Hamlin > > style shank with an 18 mm knuckle to center dimension. > > > > David Love > > <A href="mailto:davidlovepianos@earthlink.net">davidlovepianos@earthlink.net</A> > > > > _______________________________________________ > pianotech list = info: <A href="https://www.moypiano.com/resources/#archives">https://www.moypiano.com/resources/#archives</A> <FON= T face=Arial size=2>> </BODY></HTML>