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Hobbywing Xerun Axe R3 ESC and 3300Kv 550L R2 Motor Combo
- $94.11
- Brands Hobbywing
- Product Code: HWI38020389
- Availability: In Stock
Hobbywing XeRun AXE R3 ESC & 3300KV 2–3S 550L R2 Motor ComboThe Hobbywing XeRun AXE R3 ESC & 3300KV 2–3S 550L R2 Motor Combo is a high-performance brushless power system built for 1/10-scale RC rock crawlers and trail vehicles. It combines the AXE R3 electronic speed controller with a 3300KV 550L R2 motor, giving drivers precise low-speed control, strong torque, and smooth power delivery a..
High Performance 2-3S ESC and Motor Combo for RC Racing Applications
Hobbywing XeRun AXE R3 ESC & 3300KV 2–3S 550L R2 Motor Combo
The Hobbywing XeRun AXE R3 ESC & 3300KV 2–3S 550L R2 Motor Combo is a high-performance brushless power system built for 1/10-scale RC rock crawlers and trail vehicles. It combines the AXE R3 electronic speed controller with a 3300KV 550L R2 motor, giving drivers precise low-speed control, strong torque, and smooth power delivery across technical terrain.
Designed specifically around crawling applications, the system emphasizes controllability rather than simply maximum top speed. Its sensored brushless architecture provides accurate motor-position feedback, while Hobbywing's programmable features allow users to tune throttle response, drag brake, and other operating characteristics to suit different trails and vehicle setups.
Key Features
AXE R3 ESC: Purpose-built brushless controller for RC crawling and trail applications.
550L R2 3300KV Motor: Long-can sensored brushless motor designed for compatible 1/10-scale vehicles.
2–3S LiPo Compatible: Supports common 2S and 3S LiPo crawler battery configurations.
Sensored Brushless System: Provides precise motor-position feedback for smooth low-speed operation.
Forward/Reverse/Brake Control: Supports the driving functions commonly required for crawling.
Programmable Drag Brake: Helps maintain vehicle position on steep descents and technical obstacles.
Adjustable BEC: Provides regulated power for compatible receiver and servo electronics.
Waterproof Design: Suitable for wet and muddy trail conditions when properly installed.
High Torque Output: Designed to provide controlled power over rocks, inclines, and uneven terrain.
Compact Integrated Power System: Designed to simplify installation in compatible 1/10-scale crawler platforms.
Product Specifications
| Specification | Details |
|---|---|
| Brand | Hobbywing |
| Product Type | ESC & Brushless Motor Combo |
| ESC Series | XeRun AXE R3 |
| Motor Series | 550L R2 |
| Motor Type | Sensored Brushless |
| Motor KV | 3300KV |
| Motor Size | 550L |
| Battery Compatibility | 2–3S LiPo |
| Vehicle Scale | 1/10 |
| Primary Application | Rock Crawling & Trail Driving |
| Drive System | Sensored Brushless |
| Control Functions | Forward / Brake / Reverse |
| Drag Brake | Programmable |
| Water Resistance | Waterproof design |
| BEC | Integrated regulated BEC |
| Motor Sensor System | Sensored |
| Typical Vehicle Type | 1/10 RC Rock Crawler / Trail Truck |
Specification note: Hobbywing has produced multiple AXE R3 and 550L R2 configurations. Exact ESC current rating, BEC output, dimensions, motor resistance, connector configuration, and included accessories can vary by specific product SKU or regional package. Verify the exact model number supplied with the combo before installation.
AXE R3 Electronic Speed Controller
The XeRun AXE R3 ESC is designed around the demands of modern RC crawling. Rather than prioritizing extremely high RPM, the system focuses on smooth throttle modulation and predictable power delivery.
This makes it useful when navigating:
Large rocks
Steep climbs
Technical ledges
Loose terrain
Narrow trails
Descents requiring controlled braking
The sensored design allows the ESC to receive motor-position information, helping it deliver consistent power at low speeds where throttle precision is especially important.
3300KV 550L R2 Motor
The included 3300KV 550L R2 brushless motor is a long-can motor designed for compatible 1/10-scale applications.
The 3300KV rating represents the motor's approximate unloaded RPM per volt. Actual operating speed depends on battery voltage, load, gearing, ESC settings, tire size, and terrain.
With a 2S battery, the theoretical unloaded RPM is approximately 24,420 RPM, while a 3S battery produces a theoretical unloaded speed of approximately 36,630 RPM before accounting for electrical and mechanical losses.
Actual vehicle speed will be substantially different because the motor operates under load.
Sensored Brushless Technology
The AXE R3 and 550L R2 motor are designed to work together as a sensored brushless system.
Motor-position sensors provide the ESC with real-time information about rotor position. This allows the controller to regulate commutation more precisely, particularly at low RPM.
For crawling, this is valuable because the driver often needs to apply very small amounts of throttle while keeping the vehicle moving smoothly over obstacles.
Crawling-Focused Throttle Control
One of the major benefits of the AXE platform is its emphasis on throttle precision.
A well-tuned crawler power system should allow the driver to:
Start moving gradually
Maintain very low speeds
Control wheel rotation over obstacles
Apply power smoothly on climbs
Reduce unwanted surging
Control the vehicle during descents
The sensored architecture helps provide the predictable response required for this style of driving.
Drag Brake
The ESC's programmable drag-brake functionality is particularly useful for rock crawling.
Drag brake applies braking force when the throttle is released, helping prevent the vehicle from rolling backward on inclines or accelerating uncontrollably on descents.
The ideal setting depends on:
Vehicle weight
Gear ratio
Tire size
Terrain
Driving preference
Slope angle
Higher drag-brake settings can provide stronger downhill control but may also make the vehicle feel less free-rolling.
2–3S LiPo Compatibility
The combo is designed for 2S and 3S LiPo battery systems.
A 2S battery generally provides a more moderate power level, while 3S increases available voltage and motor RPM. The appropriate battery should be selected according to the vehicle, gearing, motor temperature, and ESC specifications.
Before connecting a battery, verify:
Cell count
Connector polarity
Battery discharge capability
ESC compatibility
Wiring condition
Vehicle manufacturer's recommendations
Never exceed the ESC's specified voltage range.
Waterproof Construction
The AXE R3 platform is designed for use in demanding outdoor environments and is intended to provide protection against water exposure when installed and operated according to Hobbywing's instructions.
However, waterproof does not mean maintenance-free. After wet or muddy operation, inspect the vehicle and electronics and allow components to dry appropriately.
Avoid operating the system in conditions beyond the manufacturer's specified environmental limits.
Installation Guidelines
For a reliable installation:
Mount the AXE R3 ESC securely in a protected location.
Install the 550L R2 motor using the correct mounting hardware.
Set the pinion-to-spur gear mesh correctly.
Connect the motor phase wires as specified by Hobbywing.
Connect the motor sensor cable.
Connect the ESC to the receiver.
Verify battery connector polarity.
Confirm the servo and receiver are compatible with the ESC's BEC output.
Calibrate the throttle if required.
Begin with conservative drag-brake and throttle settings.
Perform a short test run.
Check motor and ESC temperatures before extended operation.
Gearing Considerations
Although the 3300KV motor provides substantial RPM potential, gearing should be selected based on the complete crawler setup.
A larger pinion can increase speed but also raises motor load and heat. For crawling, gearing is often chosen to balance usable wheel speed with torque and temperature control.
Consider:
Pinion size
Spur gear
Transmission ratio
Tire diameter
Vehicle weight
Battery voltage
Terrain
Driving style
Motor temperature
If the motor becomes excessively hot, reduce the gearing or otherwise reduce the load before continued operation.
Maintenance
Even with a water-resistant or waterproof design, regular maintenance is important.
After demanding trail use, inspect:
Motor and sensor wiring
ESC wiring
Battery connectors
Motor mounting screws
Gear mesh
Drivetrain components
Cooling surfaces
Receiver and servo connections
Remove mud and debris from the vehicle and allow wet components to dry appropriately before storage.
Benefits
3300KV 550L R2 motor provides strong RPM potential for 1/10-scale applications.
Sensored brushless operation supports precise low-speed throttle control.
2–3S LiPo compatibility provides battery configuration flexibility.
Crawling-focused design is suited to technical off-road driving.
Programmable drag brake helps control the vehicle on descents and steep obstacles.
Waterproof-oriented construction supports outdoor trail use.
Smooth power delivery improves control over rocks and uneven terrain.
Integrated ESC and motor combination simplifies matching the primary power components.
Who Is It For?
The Hobbywing XeRun AXE R3 ESC & 3300KV 2–3S 550L R2 Motor Combo is a suitable choice for 1/10-scale RC rock crawlers and trail enthusiasts who want a sensored brushless system with smooth throttle control and strong performance.
The 3300KV motor offers a relatively high-RPM configuration for crawling applications, making it appropriate for drivers who want a combination of technical control and additional wheel speed. Proper gearing, battery selection, drag-brake adjustment, and temperature monitoring remain important for dependable operation.
Always consult the current Hobbywing documentation for the exact ESC and motor specifications, wiring instructions, battery limits, programming procedures, and environmental ratings associated with the specific combo SKU.
