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Spektrum Firma 3900Kv 4-pole Brushless Motor

Spektrum Firma 3900Kv 4-pole Brushless Motor

From Spektrum:
Great choice for 1/10 Scale 4WD models looking for a high RPM motor upgrade running up to 3S * (12.6v) power. Low cog 4-pole rotor design, CNC machined aluminum housing, insulated high purity copper windings, high-quality alloy steel 5mm output shaft, and high-precision bearings for high durability and smooth rotation. Preinstalled with 4mm gold plated bullet connectors for easy installation. Perfectly matched for the Firma 130 Smart ESC.

*Will work with the 85A Firma ESC, but only for 2S power.

Features:

  • Perfect upgrade for brushed 540- and 550-size brushed motors with the same diameter and mounting pattern (vehicle must accept pinions with a 5mm bore)
  • High-quality 4-pole sintered rotors
  • Includes 4mm gold plated bullet connectors
  • Precision ball bearings and hardened steel 5mm shaft
  • SafeD-5 Pinion compatible

In The Box:

(1) Spektrum Firma 3660-3900kv Sensorless 1/10 Brushless Motor with 4mm Gold Plated Bullet Connectors
(1) Product Manual

Needed to Complete:

  • Electronic Speed Control such as the Firma 130 Smart ESC

Specifications:

Application: 1/10 Scale Surface
Input Voltage: 12.6V
Maximum Continuous Current: 45A
Motor Type: Brushless
Outer Diameter: 1.4″ (36 mm)
Product Length: 2.35″ (60 mm)
RPM/Volt (Kv): 3900Kv
Shaft Diameter: 0.2″ (5 mm)

#SPMXSM3300 – $95.99
Visit SpektrumRC.com
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Updated: June 30, 2021 — 10:15 PM

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