See below. Terry Farrell Piano Tuning & Service Tampa, Florida mfarrel2@tampabay.rr.com ----- Original Message ----- From: "Richard Brekne" <Richard.Brekne@grieg.uib.no> To: <pianotech@ptg.org> Sent: Wednesday, October 18, 2000 5:06 PM Subject: Re: Capstan Relocation > > My action spread is 113mm. How do I know if this is good? "Just a bit on the > > wide side" of what? "Dead center" on what? I had the impression that action > > spread was just a simple magic 112mm to 113mm or so. What are you lining up > > or what? > > Spread window should be from around 111 to 114mm as I understand it. Jon Page > wrote me this, and I have seen this in a old articles, and a handout sheet I got > from Renner at the Nordic Convention this year. Course this is somewhat > dependant on whether or not action part dimensions are reasonably correctly > determined. In the Boston grand you have, we gotta kinda figure they are in the > ball park...grin. By dead center I mean the perpendicular from the hammershank > at rest from the knuckle core through the jack centerpin. This should be dead > on, or if anything off... just a half hair off a rats tail back of dead on. This > gives a nice friction condition for the jacktop on the knuckle. Once again, you > have to be sure that the hammer shank adjusted to the correct distance from the > strings after you move the whippens to check this position. You also might find > it helpfull to regulate the jacks rest position in looking at this lineup. Ah, Ok. > > > > I faxed all my data to David Stanwood this morning. I look forward to his > > input. I'm gonna wait and see. In the meantime, I just picked up this action > > from a 80 yo Brambach that barely plays. No intricate touchweight analyses > > here!. Lots of protec and gross regulation - you know, so the hammers hit > > the right strings and don't block against the strings! Heaven help us. > > Just out of curiosity.... what are your present KR sample readings, and your > Whippen Radius Weight sample readings ? KR is between 0.52 and 0.53. WWs range from 17.5 to 18.5 in the factory configuration. > Looks like you are in for a fun job on the Brambach... :) Yeah. Gotta pay the bills. Strictly salvage. Her husband (who is out of work) "rebuilt" the piano - did a yucky job refinishing it. I had given her an estimate a year ago to make the action function. Now she tells me she is going to sell it. I just know I will run into what Ron N. recently described when some luck soul call me and tells me they just bought the antique piano that I had rebuilt and the (*&(*@^#$(&@^# and the (*#&()*@#&$ don't work! And they think I shoud fix it. Oh, well. We will see. > > > > > Keep us informed of what you end up doing... its great to see the learning > > > process in action... one of the greatest teachers there are actually... > > > > > > -- > > > Richard Brekne > > > RPT, N.P.T.F. > > > Bergen, Norway > > > > > > > > Terry Farrell > > Piano Tuning & Service > > Tampa, Florida > > mfarrel2@tampabay.rr.com > > > > > > > -- > Richard Brekne > RPT, N.P.T.F. > Bergen, Norway > > > >
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