How to upgrade RC car brushed to brushless? Upgrading from a brushed motor to a brushless setup is one of the most popular and rewarding upgrades in the RC hobby. You’ll gain significantly more speed, better efficiency, and longer motor life. This guide walks you through every step including what to buy, how to install it, and what to watch out for.
Why Upgrade to Brushless?
Brushed motors have physical carbon brushes that make contact with the commutator to create rotation. These brushes wear out, create friction, and limit efficiency. Brushless motors have no brushes. Instead, the ESC electronically switches the magnetic fields, creating a cleaner, more efficient rotation. The benefits of brushless:
- 30–50% more speed from the same battery
- Significantly more torque
- Much longer motor life (10,000+ hours vs 1,000–3,000 hours for brushed)
- Better heat management under sustained load
- Higher efficiency = longer run times per charge
The cost:
- Higher upfront cost ($50–$150 for a quality brushless combo)
- More complex tuning
- More heat on cheaper setups
- What You Need to Buy
A brushless upgrade requires two components: a brushless motor AND a brushless ESC. You cannot run a brushless motor on a brushed ESC they are completely different systems.
1. A Brushless Motor
2. A Brushless ESC
3. A Pinion Gear Change
How to upgrade RC car brushed to brushless
Step 1: Remove the old motor
Disconnect the motor wires from the ESC. Remove the pinion gear (use a hex key on the set screw). Unscrew the motor from the mount. Note the motor’s position/orientation.
Step 2: Remove the old ESC (if replacing)
Disconnect the ESC from the battery, receiver, and motor. Unscrew it from the chassis.
Step 3: Mount the new ESC
Place the new ESC in the same location or nearby. Most ESCs come with double-sided tape and/or mounting holes. Secure it firmly.
Step 4: Mount the new motor
Brushless motors have the same 540/550 sizing as brushed motors, so they usually fit the same motor mount. Slide the motor into position but don’t tighten yet you’ll need to adjust the pinion mesh.
Step 5: Install the pinion gear
Press the pinion gear onto the motor shaft. Align the set screw with the flat spot on the shaft. Tighten firmly and add a drop of Loctite Blue.
Step 6: Set the gear mesh
Push the motor toward the spur gear until there’s minimal play (about the thickness of a piece of paper between the teeth). Tighten the motor mount screws.
Step 7: Connect motor wires to ESC
Brushless motors have three wires (A, B, C phases). Connect them to the three motor outputs on the ESC. The wire order determines direction if the motor runs backward, swap any two of the three wires.
Step 8: Connect ESC to battery and receiver
- Battery input: XT60 or XT30 connector to battery
- BEC output: servo connector to receiver’s throttle channel
- Bind/program: some ESCs have a programming port or button
Step 9: Program the ESC
Most brushless ESCs need to be programmed for your battery type (LiPo/NiMH), LVC cutoff, braking strength, and motor timing. Use the programming card (if included) or the ESC’s LED button sequence.
Step 10: Do a motor direction test
With the car on a stand, give a small amount of throttle. If the wheels spin backward, swap any two motor wires. If they spin forward, you’re good.
Step 11: Do a gear mesh and temperature test
Run for 3 minutes on a safe surface. Stop and check the motor temperature immediately. If it’s very hot, go down 1–2 teeth on the pinion.
Final Thoughts
A brushless upgrade is one of the best investments you can make in an RC car. The performance gain is substantial, the motor lasts far longer, and the experience of driving a properly set-up brushless car is in a different league from brushed. Buy a quality ESC and motor combo (don’t go ultra-cheap on brushless you get what you pay for), set your mesh and pinion correctly, and enjoy significantly more performance from the same chassis.
Frequently Asked Questions (FAQ)
Can I use my old ESC with a brushless motor?
No. Brushed and brushless ESCs are fundamentally different and incompatible.
Will my old receiver and transmitter work with a brushless setup?
Yes. The receiver and transmitter are unaffected by the motor/ESC type.
What’s the best brushless combo for beginners?
The Hobbywing Quicrun 3300KV motor + 60A ESC combo is widely recommended as an outstanding value entry point.
Is the brushless upgrade hard?
For someone mechanically comfortable with RC cars, it takes about 30–60 minutes. For complete beginners, allow 1–2 hours.
Do I need to upgrade my gears when going brushless?
Not immediately, but brushless motors are more powerful and will accelerate gear wear. Metal gear sets are worth considering if you plan to bash aggressively.
Can I run 3S on a 2S-rated brushless setup?
Only if both the motor AND ESC are rated for 3S. Check specifications carefully.
How much faster will my car go after a brushless upgrade?
Typically 20–50% faster stock-for-stock, depending on your KV choice and battery.