Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your 9IMOD Brushless ESC Motor Combo. This high-performance combo is designed for 1/18 and 1/24 scale RC Crawler Cars, including models like Axial SCX24 and TRX4M. Please read this manual thoroughly before use to ensure proper setup and optimal performance.
Features
- AM32 custom firmware for precise control.
- All wires are pre-soldered for convenience.
- Detachable design for easy cleaning and maintenance.
- ESC features an aluminum cooling system for excellent heat dissipation.
- Compact and lightweight design suitable for small-scale RC vehicles.
- Support for electronic switches.
- Compatible with 2-4S LiPo batteries (3S recommended).
Setup and Installation
1. Component Overview
The combo includes the 9IMOD AM32 30A Brushless ESC and your chosen brushless motor (1224, 1621, or 2204 series). A USBLink is also included for programming (if applicable to your specific combo).
Image: Overview of the 9IMOD Brushless ESC and Motor components.
2. Wiring Connections
Ensure all connections are secure and correctly oriented before powering on your RC vehicle.
- Motor Connection: Connect the motor wires to the ESC motor output. The wires are pre-soldered for direct connection.
- Receiver Connection: Connect the ESC's receiver plug to the appropriate channel on your RC receiver (typically channel 2 for throttle).
- Battery Connection: Connect your 2-4S LiPo battery to the ESC's power input.
- Auxiliary Power (if applicable): The ESC provides a 6V@2A BEC output for powering your receiver and servos.
Image: The ESC showing Receiver Plug, Motor Plug, and PH2.0 Female Plug.
Image: Example wiring setup showing the ESC connected to a motor, receiver, and battery in an RC vehicle.
3. Compatibility Notes
- 1224 Brushless Motor: Suitable for 1/24 Crawler Car Axial SCX24 with the original gearbox.
- 1621 Brushless Motor: Suitable for 1/18 Crawler Car TRX4M with the original gearbox.
- 2204 Brushless Motor: Requires a 1/18 or 1/24 Crawler Car Axial SCX24 TRX4M with a modified gearbox for proper installation and function.
Note: The remote control's throttle trim must be adjusted to the neutral position before connecting the ESC to ensure proper initialization.
Operation
1. Powering On
After all connections are made and the remote control is in neutral, connect the battery to the ESC. The ESC is equipped with an indicator light that will illuminate upon successful connection and remain on during operation.
Image: The ESC showing its green indicator light, which confirms successful connection.
2. AM32 Firmware
The AM32 firmware is specifically designed for AT32 ARM processors to control brushless motors (BLDC). It ensures safe, fast, and smooth startup, along with linear throttling for precise control of your RC vehicle.
Image: Visual representation of the AM32 firmware's role in controlling brushless motors.
Maintenance
- The detachable design of the motor and ESC allows for convenient cleaning and maintenance. Regularly inspect components for dirt, debris, or damage.
- Keep the aluminum cooling system of the ESC free from obstructions to ensure optimal heat dissipation.
- Check all wire connections periodically for looseness or wear.
- Store the components in a dry, cool place when not in use.
Troubleshooting
- No Power/ESC Not Responding:
- Ensure the battery is fully charged and properly connected.
- Verify that the remote control's throttle trim is set to neutral before powering on the ESC.
- Check all wiring connections between the ESC, motor, receiver, and battery for secure contact.
- Motor Not Spinning Correctly:
- Confirm the motor is correctly matched to your vehicle's gearbox type (original vs. modified).
- Inspect motor wires for damage or poor connections.
- Overheating:
- Ensure the ESC's aluminum cooling system is clean and has adequate airflow.
- Verify that the motor and ESC are not overloaded (e.g., incorrect gearing, excessive resistance).
Specifications
AM32 30A ESC Specifications
| Feature | Specification |
|---|---|
| Brand | 9IMOD |
| Battery | 2~4S Lipo (Recommend 3S) |
| Continuous Current | 20A (MAX 30A) |
| Momentary Current (10s) | 80A |
| BEC | 6V@2A |
| Motor Compatibility | 1224/1621/2204 Brushless Motor |
| Dimensions | 28.5 x 19 x 9 mm |
| Weight | 15g |
| Suitable for | 1/18 1/24 SCX24 TRX4M Crawler Car |
Image: Detailed specifications for the AM32 30A ESC.
1621-3200KV Motor Specifications
| Feature | Specification |
|---|---|
| Product Number | 1621-3200 |
| Stator Diameter | 12 mm |
| Stator Thickness | 12 mm |
| Number of Stator Slots | 9 |
| Magnet Grade | 12 |
| Motor Winding | 1+2 Delta |
| Motor Wire Diameter | 0.29 mm |
| Motor KV Value | 3200KV RPM/Volt |
| No-Load Current (10V/11.1V) | 0.4 Amps |
| Maximum Current | 30 Amps |
| Maximum Power | 333 Watts |
| Motor Internal Resistance (rm) | 0.002 Ohms |
| Motor Weight | 17 Grams |
| Motor Outer Diameter | 15.7 mm |
| Motor Shaft Diameter | 1.7 mm |
| Motor Length | 20.9 mm |
| Overall Length (including shaft) | 30 mm |
| Number of Cells (Battery Cells) | 3S |
| Motor Timing | 1-4 deg |
| Drive Frequency | 2 kHz |
Image: Detailed specifications and dimensional diagram for the 1621-3200KV motor.
1621-3600KV Motor Specifications
| Feature | Specification |
|---|---|
| Stator Diameter | 12 mm |
| Stator Thickness | 12 mm |
| Number of Stator Slots | 9 |
| Magnet Grade | 12 |
| Motor Winding | 1+2 Delta |
| Motor Wire Diameter | 0.29 mm |
| Motor KV Value | 3600KV RPM/Volt |
| No-Load Current (10V/11.1V) | 0.9 Amps |
| Maximum Current | 30 Amps |
| Maximum Power | 350 Watts |
| Motor Internal Resistance (rm) | 0.002 Ohms |
| Motor Weight | 17 Grams |
| Motor Outer Diameter | 15.7 mm |
| Motor Shaft Diameter | 1.7 mm |
| Motor Length | 20.9 mm |
| Overall Length (including shaft) | 30 mm |
| Number of Cells (Battery Cells) | 3S |
| Motor Timing | 1-4 deg |
| Drive Frequency | 2 kHz |
Image: Detailed specifications and dimensional diagram for the 1621-3600KV motor.
1224 Brushless Motor Specifications
| Feature | 1224-4000KV | 1224-5000KV |
|---|---|---|
| Watts | 300 | 300 |
| KV (RPM/Volt) | 4000 | 5000 |
| Lipo | 2S | 2S |
| Max RPM | 29600 | 37000 |
| Diameter | 12mm | 12mm |
| Length | 24mm | 24mm |
| Shaft | 1.5mm | 1.5mm |
| Overall Length (shaft included) | 15mm | 15mm |
| Connector | 3Pin Plug | 2mm gold plated |
| No load current (1o/7.4V) | 0.2 Amps | 0.3 Amps |
| Madame resistance (rm) | 0.001 Ohms | 0.002 Ohms |
| Motor wire diameter | 0.18mm | 0.29mm |
| Suit for | 1/24 RC Crawler Car Axial SCX24 WPL FMS FCX24M | |
Image: Detailed specifications and dimensional diagram for the 1224 brushless motors.
2204-2100KV Motor Specifications
| Feature | Specification |
|---|---|
| Product Number | 2204 |
| Stator Diameter | 22 mm |
| Stator Thickness | 4.6 mm |
| Number of Stator Slots | 12 |
| Magnet Grade | 14 |
| Motor Winding | Overlay Delta |
| Motor Wire Diameter | 0.25 mm |
| No-Load Current (1o/22.2V) | 0.5 Amps |
| Maximum Current | 25 Amps |
| Maximum Power | 700 Watts |
| Motor Internal Resistance (rm) | 0.004 Ohms |
| Motor Outer Diameter | 28 mm |
| Motor Shaft Diameter | 2.0 mm |
| Motor Length | 19.2 mm |
| Overall Length (including shaft) | 30.5 mm |
| Number of Battery Cells | 3S11.1V |
| Motor Inlet Angle | 1-5 deg |
| Drive Frequency | 4 kHz |
Image: Detailed specifications and dimensional diagram for the 2204-2100KV motor.
2204-2500KV Motor Specifications
| Feature | Specification |
|---|---|
| Product Number | 2204 |
| Stator Diameter | 22 mm |
| Stator Thickness | 4.6 mm |
| Number of Stator Slots | 12 |
| Magnet Grade | 14 |
| Motor Winding | Overlay Delta |
| Motor Wire Diameter | 0.25 mm |
| No-Load Current (1o/22.2V) | 0.7 Amps |
| Maximum Current | 30 Amps |
| Maximum Power | 900 Watts |
| Motor Internal Resistance (rm) | 0.005 Ohms |
| Motor Outer Diameter | 28 mm |
| Motor Shaft Diameter | 2.0 mm |
| Motor Length | 19.2 mm |
| Overall Length (including shaft) | 30.5 mm |
| Number of Battery Cells | 3S11.1V |
| Motor Inlet Angle | 1-5 deg |
| Drive Frequency | 4 kHz |
Image: Detailed specifications and dimensional diagram for the 2204-2500KV motor.
User Tips
- Always double-check the motor and ESC compatibility with your specific RC vehicle model and gearbox type (original vs. modified) before installation.
- For optimal performance and longevity, ensure your battery's discharge rate (C-rating) is sufficient for the motor's maximum current draw.
- Consider using a programming card or software (if available for AM32 firmware) to fine-tune ESC settings for your driving style and vehicle.
Compliance and Safety
⚠️ WARNING: This product can expose you to chemicals including phthalates (DEHP), which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
Support
For any questions, technical assistance, or issues not covered in this manual, please contact the 9IMOD Official Store directly. Provide your product details and a clear description of the issue for efficient support.