Recycled technology-cutoff bar

Lesher, Trent J. tlesher@sachnoff.com
Fri, 31 Dec 2004 19:43:55 -0600


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	Hi Terry,
	=20
	What is this piano that you're working on?  I don't see a metal spider, =
so I'm thinking it might be that Knabe you mentioned. =20
	=20
	BTW, I am going to go look at a Bush & Lane Pompeiian in Michigan next =
weekend.  It is one of what B&L called their "traditional uprights," =
which have the most massive plates of all the B&L's, is a full 58", with =
the same speaking-length scale as my current one but longer backscale in =
the bass and also longer backscale at the bottom of the long bridge, and =
bass bridge direct to the board (not cantilevered).  The Pompeiian is =
also my favorite of the cabinet styles I've seen so far (same as I sent =
you a picture of last year).  This vintage (1919) should have the Wessel =
Nickel and Gross action, and maybe I'll be lucky and it has lost-motion =
compensation.  However, while these models do have curved sounboard =
rims, they do not have the plate-flange supported pin-block with the =
upward-extended soundboard, but I'm not sure what extension in that =
direction does anyway (my current one has the extension, and does have =
an enchanting lower midrange, but who knows why?).  Any exciting =
developments after next weekend, I'll report further.
	=20
	Regards,
	=20
	Trent Lesher

		-----Original Message-----=20
		From: Terry [mailto:terry@farrellpiano.com]=20
		Sent: Thu 12/30/2004 6:53 PM=20
		To: Pianotech=20
		Cc:=20
		Subject: Re: Recycled technology-cutoff bar
	=09
	=09
		Or if the original cut-off bar didn't cut enough off! - But I used new =
wood, so you still win!   ;-)
		=20
		Terry Farrell
		=20
		=20

			----- Original Message -----=20
			From: Erwinspiano@aol.com=20
			To: pianotech@ptg.org=20
			Sent: Thursday, December 30, 2004 1:03 PM
			Subject: Recycled technology-cutoff bar

		=09
			  List
			     I find this kind of thing fun when I can take a beautiful piece =
of previously engineered something and adapt it to something else saving =
big time & cash & utilizing something that originally was very expensive =
to make & end up with a nice result
			  A client brought in a 1900 ish Baldwin upright that ended up =
needing more than it first appeared, including a board. It wasn't worth =
doing so the decision was made to scrap it. The tech who brought in the =
job wanted the beams & such for the maple & I'll be able to salvage the =
spruce in the lam. beams also.=20
			    The real jewel though was that this piano had a laminated =
soundboard liner just like Mason or Stwy grands & uprights ( not as =
thick as a grand ).  I managed to get it off in nearly one piece with =
crow bars, chisels & an Oklahama speed wrench.
			    Now coincidently I'm replacing the board in a 6 ft. 1 inch Mason =
AA no. 28,246  which has ribs so long a cutoff bar was really a =
necessity.   =20
			    The old Upright board liner had plenty of stock for this & by =
fashioning it to fit the corner of the AA I was able to install a =
straight 28 inch cut off bar that reduced the overall length of 6 ribs =
as much as 13.5 inches. My longest rib was 50" & one of the  longest =
I've ever witnessed in any piano. This rib is now about 37.5 inches =
long. I don't believe its possible to use ribs this long and expect =
crown support for very long. Although my observations of the  AA's is =
limited the 13 rib scale has shown the crown has not survived even with =
tension resonator claims. Hence the few AA boards I've seen  are usually =
quite flat. The sound of this piano though fair was quite lack luster in =
its tonal appeal if you know what I mean even though the board was not =
seriously cracked up
			   The Mason AA has a very wide body & hence very long ribs for a 6 =
ft 1" piano
			   The original rib scale was as follows on the left
			   For clarity the measurements below are the actual rib speaking =
length not including the piece in the notches.
			  =20
			   1. 30       in inches
			   2. 37
			   3. 45 --------38  modified length
			   4. 50 --------37.5
			   5. 46  -------35.5
			   6. 40 --------32.5 =20
			   7. 34 --------29.5
			   8. 28 --------27
			   9. 28
			  10. 20
			  11.18
			  12. 15
			  13. 13
			  It's easy to see there is far more hopes for the longevity of rib & =
crown stiffness than the previous scale. this mod also get the bridge =
more nearly centered over the long ribs which is IMO a good thing.This =
original bridge also has the  transition bridge with all the usual funky =
tri-chords. It's receiving a modified trans. bridge with bi-chord =
replacements.
			  I'll let you know how it turns out in a month or so. The action is =
done & case stripped. The parts are in the finish process waiting for =
the belly man to get it done so my finish guy(Roy) can have the case & =
plate.
			   Good new year to all
			    Dale Erwin
			   =20
			  =20
			=20
			Erwins Pianos Restorations=20
			4721 Parker Rd.
			Modesto, Ca 95357
			209-577-8397
			Rebuilt Steinway , Mason &Hamlin Sales
			www.Erwinspiano.com



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