ESC Overview:
Unlock maximum torque and precision with the Spektrum RC Firma 3530 12-Pole Sensorless Brushless Outrunner Motor, perfect for 1/10 scale rock crawlers and technical competition crawling.
About the Firma 3530 Brushless Outrunner Motor
High-Performance Crawling
The Spektrum RC Firma 3530 12-Pole Sensorless Brushless Outrunner Motor is engineered for 1/10 scale rock crawlers, delivering exceptional torque and precision. Compatible with 2S–4S LiPo batteries, this motor features a 12-pole rotor design, CNC-machined aluminum housing, and high-purity copper windings for smooth, efficient power. Its 3.175mm alloy steel output shaft ensures durability, while the ultra-smooth low-speed throttle response makes it ideal for technical crawling and competition use.
Advanced Components
Designed for convenience and performance, the Firma 3530 includes pre-installed 3.5mm gold-plated bullet connectors and bolts directly to standard 540 mounts. Lightweight and compact, it provides higher torque than traditional 540 brushed motors while minimizing heat buildup. With efficient power delivery and compatibility with common RC pinions, this motor offers both reliability and precision for serious crawler enthusiasts.
Features:
- 12-pole Sensorless brushless design
- Compatible with 2S, 3S, and 4S LiPo
- 3.175mm alloy steel output shaft
- CNC-machined aluminum motor housing
- High-purity insulated copper windings
- Pre-installed 3.5mm gold-plated bullet connectors
- Bolts to standard 540 mounts
- Lightweight and compact for efficiency
- High torque output for technical crawling
- Ultra-smooth low-speed throttle response
Includes:
- (1) Firma 3530 12-Pole Sensorless Brushless Outrunner Crawler Motor
- (1) Product Manual
Specifications:
| Suggested Application | 1/10 Rock Crawlers |
|---|---|
| Motor Type | Brushless Sensorless |
| RPM/Volt (kV) | 1700kV |
| Input Voltage | 2-4S LiPo (7.4-14.8V) |
| Motor Size | 3530 |
| Poles | 12 |
| Length | 1.18in (30mm) |
| Diameter | 1.37in (35mm) |
| Shaft Length | 0.7in (18mm) |
| Shaft Diameter | 0.12in (3mm) |
| Weight | 3.52oz (100g) |
| Motor Connector | 3.5mm Bullet |
This product was added to our catalog on September 2, 2025
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