Original Message:
Sent: 9/3/2025 7:25:00 AM
From: Ed Sutton
Subject: RE: Sabathil string schedule
If you post your concern to the Facebook "Revival harpsichords" group, you may get a reply from someone who has one of these instruments.
In my long ago memory, I believe Sabathil used wound strings in the bass. But that gets longer and longer ago...
------------------------------
Ed Sutton
ed440@me.com
(980) 254-7413
------------------------------
Original Message:
Sent: 09-02-2025 15:25
From: Dave Conte
Subject: Sabathil string schedule
Fred, thank you for your input. Using heavier gauge wire for the same frequency seems
counter-intuitive to me, wherein it would take a higher tension to reach the same pitch, making it closer to or at the failure tension of the wire and also upset the partial series (although this probably not very significant in harpsichords).
I don't have a similar instrument here. The two I have are either 6" shorter or 4" longer.
Maybe I can split the difference. I measured the Hubbard double with the same compass and will see how it compares to the Sabathil I am working on.
It looks like red brass up to D# which has a diameter of .020". YB notes E @ .018" to A @ .016".
All the notes strung with .022" RB were broken. Perhaps I should go with phosphor bronze on those?
The rest are steel. Doesn't look like there is any iron, but the notes that might be are not an issue.
-- Dave Conte, RPT, CCT
Owner, Rocky Top Piano
Knoxville, TN
817-307-5656
Original Message:
Sent: 9/2/2025 1:59:00 PM
From: Fred Sturm
Subject: RE: Sabathil string schedule
I'll suggest never going with something heavier when restringing. Heavier wire will need to be at a higher tension, so you will be adding strain to the instrument, potentially resulting in wracking the instrument. There has been a tradition of restringing with heavier gauges over the years, and it has led to a lot of unnecessary destruction of otherwise solid instruments. (This is not really specifically applicable to Sabathil, which has a plate - at least in the older ones).
In general, although heavier wire will withstand a higher tension, the increase in tension is proportional to the increase in size. Hence, a larger diameter wire will be almost precisely at the same breaking point percentage, for the same length and same pitch. If anything, it is wiser to reduce size a bit, since the smaller diameters often have a somewhat higher strength in proportion to diameter due to work hardening from the drawing process.
The main issue with string breakage in harpsichords tends to arise in the area of brass strings. In that case, there are options of different types of brass, or phosphor bronze if all else fails.
Regards,
Fred Sturm
"I am only interested in music that is better than it can be played." Schnabel
Original Message:
Sent: 9/2/2025 1:42:00 PM
From: Robert Dianetti
Subject: RE: Sabathil string schedule
I've worked on a couple of Sabathils over the years. To be honest, I'd go with whatever is on the instrument, or perhaps a little heavier. There will be no "light delicate tone" with this beast and the best you can do is to even out the scale and keep it regulated. It probably doesn't matter to much what you use - the player most likely won't be all that discerning anyhow.
Bob Dianetti
------------------------------
Robert Dianetti
Chardon OH
(330) 807-8070
Original Message:
Sent: 08-28-2025 08:09
From: Dave Conte
Subject: Sabathil string schedule
Hi, all.
I am working on an 88" Sabathil single with 3 choirs (1x4, 2x8) 63 note compass FF - f"' on which numerous broken strings have been replaced.
It belongs to Knoxville Symphony Orchestra. I am aware it is a low quality instrument and made them aware politely but in no uncertain terms that it is.
They are not going to invest in another instrument. I am about finished with regulation, but need to straighten out the stringing.
Does anybody know where I can find a string schedule? What's left of the original does not seem to match what is in any of my reference sources.
TIA.
Dave
------------------------------
Dave Conte, RPT
Piano Technician in Residence
The University of Tennessee
College of Music
Knoxville TN
(817) 307-5656
Owner: Rocky Top Piano
------------------------------