Futaba FUMC970A 70AMP 4-12S Li-Po Brushless Motor Controller ESC without BEC  [FUMC970A]

FUTABA MC970A 70AMP 4-12S LI-PO BRUSHLESS MOTOR CONTROLLER ESC WITHOUT BEC
Price:
CAD$62.96
Brand:
Futaba
Model:
FUMC970A
Condition:
Brand New
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Aircraft ESC Overview

The Futaba FUMC970A is a compact electronic speed controller built for RC-scale electric aircraft using brushless motors and multi-cell Li-Po batteries. Its designation communicates a 70AMP continuous rating, support for 4-12S Li-Po configurations, brushless motor control, and the absence of an integrated BEC.

Installation guidance stresses proper wiring, reliable power distribution, and effective cooling. Because this ESC does not include a BEC, provide a separate regulated supply for servos and the receiver with an external UBEC or dedicated regulator. Secure the unit with vibration isolation and maintain good airflow around the case; use wire gauges and connectors rated for sustained 70AMP operation.

For tuning and setup, follow the programming procedures specified by Futaba for the FUMC970A when adjusting motor timing, governor options, and brake logic. Match the ESC to a motor and propeller combination that keeps peak and continuous current within safe margins for the 70AMP rating, and verify thermal behavior during bench testing before flight.

Specifications

  • Item: Brushless motor electronic speed controller (ESC)
  • Material: Electronic components and PCB assembly
  • Model Number: FUMC970A
  • Compatibility: Designed for brushless motors; supports 4-12S Li-Po battery systems for aircraft ESC applications
  • Current Rating: 70AMP (as stated in product name)
  • BEC: No built-in BEC (without BEC)

For model aircraft builders wanting a high-current ESC without an onboard receiver supply, the FUMC970A delivers a defined power envelope that should be paired with an external BEC and suitably rated brushless motors to form a complete propulsion system.

What battery configuration does this ESC support?

The model designation indicates support for 4–12S Li-Po packs; always use batteries within that cell range and confirm correct polarity and secure connections.

Does the ESC provide power for the receiver and servos?

No. The FUMC970A is supplied without an internal BEC, so you must fit an external UBEC or a separate receiver battery to power servos and the radio gear.

Which motor type is appropriate with this ESC?

This ESC is intended for brushless motors; select a motor whose continuous draw stays within the 70AMP rating for your propeller choice and flight profile.

Are there recommended mounting and cooling practices?

Mount the ESC with vibration dampers when possible and allow unrestricted airflow around the case. Avoid sealing the unit in tight compartments if you plan to run near the upper current limit.

How should power and signal wiring be handled?

Use appropriately sized battery leads and rated connectors for main power, attach the signal lead to the throttle channel on the receiver, and provide a separate regulated feed for servos if no BEC is present.

What pre-flight checks are advised for the ESC?

Check battery voltage, confirm correct motor rotation and throttle response at low power, perform a short bench run to observe temperatures, and verify the receiver has its own power source.

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