M&H A scale and rim movement

[Farrell]

New soundboard (board dropped 0.01" - YIKES!!!). Recap bridges. Position
plate properly (regardless of where last rebuilder put it). Rescale whole
piano. Get top quality bass strings. I use David Sanderson for both.
Problems solved.

Terry Farrell
Piano Tuning & Service
Tampa, Florida
mfarrel2@tampabay.rr.com

----- Original Message -----
From: "Richard Anderson" <tknostf@foxvalley.net>
To: "pianotech" <pianotech@ptg.org>
Sent: Tuesday, March 13, 2001 7:24 PM
Subject: M&H A scale and rim movement


> I need help with two puzzles on a M&H A I unstrung today.
>
> First, this piano was previously rebuilt by a shop that is famous for its
> creative work. The scale they used does not match anything in Guide to
> Restringing. There is an A scale that starts with 11 nineteens that I've
> found on pianos with serial numbers on either side of this one, but it's
not
> even close to what was on this piano. Does anyone have an original scale
> from a serial number closer to 18706 than 19828 or 18656?
>
> Serial number 18706 (1909)
> scale designation cast in plate is A.
> treble bridge has big hook, bass bridge is straight
> 2 bicords on treble bridge
> 60 plain wire unisons
> no individual rear aliquots
> lots of little ribs up in the treble
> spider is present but may have been messed with (at least he didn't remove
>   it, there's another shop that routinely removes them)
>
> Second, once unstrung, the plate wedge fell out as usual, but the gap is
now
> at least 1/16" greater that the thickness of the wedge. I've not seen one
> open up this far before. Also the board moved down .010" with unstringing.
> I'm having trouble visualizing how the rim/plate/belly rail are moving so
> much. More importantly I have to decide whether to install the plate where
> it's at or move it, and whether to replace the wedge with a thicker one or
> not. The previous rebuilder replaced the block (not glued in of course) so
> the current placement is suspect. Any thoughts on what's going on with
this
> piano?
>
> Thanks,
>
> Richard Anderson
> Elgin,IL
>
>