Quad Current Meter
Apr/3/2011
The new Fromeco Quad Current Meter
What is it?:
QCM in
Action
QCM in Action 2
The Fromeco Quad Current Meter (QCM) is a small device that
is used for Matching Multiple Servos driving Single Flight Surfaces.
In other words matching servos that are ganged together.
How does it work?:
The QCM measures current for individual servos and displays
the servos reading on the display. The QCM does this for 1, 2,
3, or 4 servos at once.
In the picture above you can see a QCM inbetween a Smartfly
Power Expander EQ10 and a Aeroprotect 4 Servo Rudder tray. Fromeco
has intentionally (using the Smartfly Power Expander) mismatched the Rudder
Tray. As you can see Servo#2 is reading 1.1amps, Servo#1 (which is
connected the same bolt as the Servo#2) is reading 882mA. Due to the
stress that is being put on the tray by Servo#2, Servos#3 and #4 are also seeing
elevated loads. Servo#3 is 776mA, and Servo#4 is 624mA.
The picture above is a continuation of the first
picture. Here Fromeco has adjusted the Aeroprotect Rudder Tray using
the Smartfly Power Expander EQ10. We have adjusted Servo#2 so that
is now in sink with Servos#3 and #4. As you can see from the picture
Servo#1 now needs to be adjusted slightly to get all Servos to be
matched.
The final Picture shows all 4 Servos at a 0
reading.
For more QCM information go here.
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