Hello all - Recently I bought two sets of piano key playing solenoids
for MIDI piano operation and one set is a QRS brand and the other
a Marantz brand.

The QRS brand solenoids are mounted onto parallelogram-shape brackets
that mount into aluminum rails, one on each side, so that when they
are mounted on the bottom of a piano key bed they will match a typical
1/2" spacing at the back and bottom of the keys in an upright piano.

The Marantz brand can also be used with the typical 1/2" spacing at
the back and bottom of the keys under the key bed, but the solenoids
are mounted on one vertical aluminum rail, and the solenoids are
mounted into slots and staggered as two vertical "decks" to achieve
the key spacing.

I don't have either of the long aluminum mounting rails -- neither
the two horizontal QRS style nor the single vertical Marantz style,
and I wonder if anyone would have a set of either one or both styles
of aluminum mounting rails for sale, or if either or both sets could
be purchased for me.

Evidently, at least for the QRS rails, to order these parts you need
to be a QRS technician or vendor, which I'm not. The same might be
true for the Marantz brand, if they are still in business, which they
may or may not be. I suspect they aren't.

Or can someone suggest another method of locating these? I haven't
found anything on eBay. See the photos for clarification.

Thanks in advance!

John Bartlett - Bartlett Design Concepts, LLC
Woodruff, South Carolina
ragtimeman25@gmail.com.geentroep [delete ".geentroep" to reply]

 [ QRS rail 3D model with two solenoids in place
 [ https://www.mmdigest.com/Attachments/24/04/20/240420_095540_58%20NOTE%20ASSEMBLY%20-%20ISOMETRIC.JPG
 

 [ Marantz rail 3D model with some solenoids in place
 [ https://www.mmdigest.com/Attachments/24/04/20/240420_095540_SOLENOID%20AND%20MOUNTING%20RAIL%20ASSEMBLY.JPG