Servo Connectors

You can mix Futaba, Airtronics, Hitec & JR servos with The ScaleMaster Decoder.  You may only select one servo type for sensitivity adjustment.  All other servos will work based on the setting for the selected brand servo.  Some motion may be erratic, depending on which servo you select to use for the "0" set adjustment, and it's compatibility with your other servos.

It is always best to use one brand of servo.  However, I have had great results using Futaba for everything except retract, for which I use HiTec.  With a little experimentation between brands you will find the best combination to use. As the Servo Wire plugs into the ScaleMaster Decoder, no matter what servo, the wires must match as follows:

far Left = black (-) voltage
Center = Red (+) voltage
far Right = Signal

When in doubt  the color code is printed on the Decoder Face Decal (as seen below)

It is not need to re-arrange any wires in the handle, to the Encoder PCB as all connectors come wired from the factory. However, should you need to change a plug, pre-made wire assembly w/switches are available.  In a pinch you can substitute a Deans P.N. 1003 3 pin connector.  Make sure that the Signal lead is on the center pin. This is critical for servo reversing as explained in the ScaleMaster Operating Manual, furnished with the Handle.

As of December 1997, Airtronics is now shipping servos with an optional "Z" connector that matches the connector found on JR Radio or Hitec servos. This means that if you have an Airtronics servo with one of the "Z" connectors, you won't have to switch (+) and (-) wires to use that servo with The ScaleMaster.

If you want to switch the wires around, almost all the connectors have little tabs or pins that you can push with a small pin to remove the wires and push them back into the connector in the right place.


For Futaba, JR, & Hitec servos (or Airtronics "Z" connector), use this diagram:


You can cut off the three little 'teeth' on the Airtronics connector to get it to match the rest of your servo connectors.

Below are the four standard connectors that are used by the 'big' four radio and Servo manufacturers:

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