DYS Brushless Speed Controller


– Replacement 20A Brushless Speed Controller for the Viper Horizontal Spinner Add-Ons.

– Power wires can be trimmed and tinned to fit into FingerTech Mini Terminal Blocks.


4 in stock (can be backordered)

SKU: ft-BL20A Categories: ,


The DYS Speed controller is a replacement ESC for brushless weapons motors. It is one for one replacement for the controller in the Viper horizontal weapons add-on.  A very detailed video on ESCs and how they work can be seen on Youtube here: https://youtu.be/OZNxbxL7cdc

Our ESC can serve in a variety of areas, but generally it should be viewed as a replacement part or a standalone weapons controller.

  • Operates on BLHeli-S software
  • Voltage: 11.1V – 14.8V
  • Current: 20A continuous
  • Size: 31 x 15 x 5.3mm (1.2 x 0.6 x 0.2in)
  • Size with plastic case: 35.2 x 20.7 x 8.3mm (1.4 x 0.8 x 0.3in)
  • Weight: 9.0grams (0.3oz)
  • Weight with case: 10.8grams (0.4oz)
  • Motor wires: 3.5mm female bullet connectors, 70mm (2.75in) wire length.
  • BLHeli-S firmware upgradable via signal wire (works with USB Linker for XM series)

– No on-board BEC.  Must provide 5V to radio receiver via other ESCs or separate dedicated BEC.

A great wiring diagram, thanks to Georgia Tech’s RoboJackets Wiki can be found here: DiagramWiring diagram for ESCs driving wheel and weapons motors

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