Volume 30, Issue 8 September 2005
Newsletter of the Columbus Chapter of the Piano Technicians Guild
In this issue:
|
|||||||||||||||||
| August Meeting and Annual
Picnic
The weather seemed menacing in the morning, and the rains began to fall
at noon. Alternate plans were being laid, for shelter from the storm. Behold,
by 4:00 pm the rain had stopped and sun began to shine. A nice little breeze
from the north dropped the humidity and launched the annual Columbus Chapter
PTG picnic. There was a great turnout with plenty of food, libation, and
conversation for all.
Tech Tips Chris Altenburg was uncertain about tuning a late 1800's Steinway grand and wrote to Steinway requesting information, he asked me to share the reply from David Kirkland of Steinway & Sons Dear Chris,
-David Kirkland, Technical Services Administrator, Steinway & Sons
For Sale Vince Ricca has a few items for sale. I sent an email out regarding these items but will post them here again. 1920 Marshall& Wendell Upright with early “A” Ampico player 80% rebuilt, with new strings, refinished, player unit bench tested. $5000.00 1919 Chickering & Sons Upright early “A” Ampico
Vacuum Pump on a Dolly with ½ hp motor has reservoir and vacuum take off ports. Pulls up to 200 inches of water column, for bench testing players. $100.00 Early “A” Ampico Player Mechanism in good restorable condition. $150.00 Call @ 614-488-4208 or cricca@wideopenwest.com
Acrosonic Observations - 4th in a series of articles from Thomas Harr THE REMARKABLE TWO-PIECE ACROSONIC One characteristic of certain Acrosonics has
nothing to do with the action per se except that it does happen to
be a spinet. Fortunately the designers never seem to have tried this
on anything larger. This would be an early 1950's case style in heavy
faux-Sheraton mahogany, resembling a side table or small bureau as much
as anything. The case arms extend straight back on top of the vertical
lower sides. Unfortunately the glue securing the arms to the rest
of the case and back was not up to the job. The thing separates at
the join and tries to fold itself up with the back tipping forward and
the back and arms tipping backwards. Any attempts to move it are
very distressing. And of course regulation and action function go by the
board.
Acrosonic lost-motion adjusting tool Bill of materials:
Cut the tubing to length, dress the ends, chamfer or deburr the
i.d.s. Clean the tubing inside and out and the rod very thoroughly
because you are going to sweat them together. You could tin them
beforehand but it would have to be very thin or they won’t fit together.
With a bit of flux applied this is easier than soldering plumbing but you
will need an iron of sufficient wattage to heat this much metal.
A small torch will work also. Your cordless p.c. pencil will not
cut it. Finally, if you are put off by soldering altogether you can
drill the assembly cross-wise and use a brass escutcheon pin to secure
it. Slide the tubes together flush on one end (the outer tube should
have 1/8" headspace on the other end). Put the rod in the flush end
about 3/8" and see that there is about 1/2" clearance in the bore.
Solder, pin, or epoxy together (cyanoacrilate is doubtful here, but I have
somewhat limited faith in the stuff). Grind or file a notch on the
free end of the rod to accommodate a combo handle or affix one of your
choosing. And now to make it work! Place the open end of the
tube on the face of the nut on one jaw
|
|||||||||||||||||