Arrma Mega 380 Brushed Motor - ARA390305
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Product Information
Full details
The Arrma Mega 380 28T brushed motor is an ideal replacement or upgrade for hobbyists seeking reliable, consistent power in their 1/16 or 1/18 scale RC vehicles. It strikes a balance between straight-line speed and low-end torque, making it a versatile choice for both bashing and casual track driving. However, as a brushed motor, it does require routine maintenance of the brushes and comms to ensure long-term performance compared to brushless alternatives.
All features
| Model Part Number | ARA390305 |
|---|---|
| Brand | Arrma |
Extended Product Information
FAQs
Can I use this motor with a 3S LiPo battery?
This motor is specifically designed for 2S LiPo power. Running a 3S battery may cause the motor to overheat or fail prematurely.
Does this motor include the pinion gear?
No, the package includes the motor only. You will need to reuse your existing pinion gear or purchase a compatible one separately.
What is the turn count for this motor?
The motor has a 28T (28-turn) configuration.
How often should I clean the brushes?
Depending on driving conditions, it is recommended to clean the motor every 10 to 15 runs to prevent carbon buildup.
Is this a direct replacement for all ARRMA 1/16 scale cars?
This motor fits many 1/16 scale ARRMA models. Please consult your vehicle manual to confirm compatibility with the ARA390305 part number.
Troubleshooting
Motor is running hot
Check your gear mesh for tightness and consider installing a smaller pinion gear to reduce stress.
Loss of power or intermittent performance
Inspect the motor brushes for wear and clean out any carbon dust or debris from inside the motor canister.
Vehicle won't move even though motor is spinning
Check the pinion gear grub screw to ensure it is tightened against the flat spot of the motor shaft.
Pros and Cons
Pros
- Excellent balance of torque and top speed
- Reliable performance for smaller RC platforms
- Supports 2S LiPo power for extended runtimes
- Easy to install in compatible ARRMA vehicles
Cons
- Requires periodic maintenance of internal brushes
- Less efficient than modern brushless motor systems
- Limited to smaller scale RC applications
Setup, Compatibility & Care
Installation of the ARA390305 is straightforward. Ensure the motor is securely mounted to the motor plate to maintain correct gear mesh. Proper gear mesh is critical to prevent premature wear on the pinion and spur gears.
Care Tips
- Break-in Period: Perform a light break-in on the motor before pushing it to maximum load to seat the brushes.
- Cleaning: Use a motor spray or compressed air to remove debris and carbon buildup from the brush area after dusty sessions.
- Maintenance: Check the temperature of the motor periodically. If it exceeds 160°F (71°C), consider lowering your pinion gear size to reduce the load.