1. Introduction
Thank you for choosing the DollaTek 2435 4800KV 4P Sensorless Brushless Motor and 25A Electronic Speed Controller (ESC) combo. This high-performance system is designed for 1/16 and 1/18 scale RC cars and trucks, offering excellent power and reliability. This manual provides essential information for proper installation, operation, and maintenance to ensure optimal performance and longevity of your product.
Image 1.1: The DollaTek 2435 4800KV 4P Sensorless Brushless Motor and 25A ESC combo, showing the motor, ESC, and various connectors.
2. Safety Precautions
- Always disconnect the battery from the ESC when not in use to prevent accidental operation and potential damage.
- Ensure all connections are secure and properly insulated to avoid short circuits.
- Never operate the motor without a load for extended periods, as this can cause overheating.
- Keep hands, hair, and loose clothing away from rotating parts.
- Use appropriate battery types and voltages as specified in the product specifications. Over-voltage can damage the ESC and motor.
- Store the product in a dry, cool place away from direct sunlight and moisture.
- Adult supervision is recommended for users under 14 years of age.
3. Package Contents
Verify that all items listed below are included in your package:
- 1 x DollaTek 2435 4800KV 4P Sensorless Brushless Motor
- 1 x DollaTek 25A Brushless Electronic Speed Controller (ESC)
4. Product Overview
4.1. 2435 4800KV Brushless Motor Features
Image 4.1: Two DollaTek 2435 4800KV Brushless Motors, highlighting their compact design.
- 4-pole 12-slot high-torque motor design.
- CNC machined 6061 T6 billet aluminum heatsink can for efficient heat dissipation.
- High purity copper windings maximize efficiency.
- High RPM ABEC5 oversized bearings for durability.
- Universal fit for 1/16 and 1/18 scale brushless vehicles.
- Multi-mounting system for M2.5 screws.
- Precision balanced rotor for optimal reliability and maximum RPM.
- Precision engineered for maximum energy conversion.
4.2. 25A Brushless ESC Features
Image 4.2: The DollaTek 25A Brushless Electronic Speed Controller, showing its compact form factor and wiring.
- Compatible with sensorless brushless motors.
- High anti-interference capability.
- Advanced software interface for configuration and updates (requires compatible programming card/device, not included).
- Super smooth and accurate throttle linearity.
- Fast response to throttle input.
- Multiple protection features: low voltage cut-off, over-heat, and throttle signal loss protection.
5. Setup Guide
5.1. Mounting the Motor
Mount the 2435 brushless motor securely to your vehicle's motor mount using M2.5 screws. Ensure proper gear mesh between the motor pinion and the vehicle's spur gear. Refer to your vehicle's manual for specific mounting instructions.
Image 5.1: Diagram showing the dimensions of the DollaTek 2435 Brushless Motor, including mounting hole spacing (M2.5 screws).
5.2. Connecting the Motor to ESC
Connect the three motor wires from the brushless motor to the three corresponding wires on the ESC using the 3.5mm bullet connectors. The order of connection typically does not matter for sensorless motors, but if the motor spins in the wrong direction, swap any two of the three wires.
Image 5.2: Close-up of the 3.5mm bullet connectors used for connecting the motor to the ESC.
5.3. Connecting the ESC to Receiver
Plug the small servo-style connector from the ESC into the throttle channel (usually channel 2) of your RC receiver. Ensure the polarity is correct (signal, positive, negative).
5.4. Connecting the Battery
Connect your battery pack to the T-male power plug on the ESC. Ensure the battery's voltage and type (2S LiPo / 4-6S NiMh) are compatible with the ESC specifications. Incorrect battery connection or type can cause severe damage.
Image 5.4: Close-up of the T-male power connector on the ESC for battery connection.
5.5. ESC Calibration
Before first use, or if you change your radio system, you must calibrate the ESC to your transmitter's throttle range. The exact procedure may vary slightly, but generally involves:
- Turn on your transmitter and ensure the throttle trim is at neutral.
- With the ESC off and battery connected, hold the ESC's power button (if available) or follow the specific power-on sequence while holding full throttle on your transmitter.
- Wait for a beep, then move the throttle to full brake/reverse.
- Wait for another beep, then return the throttle to neutral.
- Wait for a final beep, indicating successful calibration.
Refer to the ESC's specific manual (if provided separately) for detailed calibration steps.
Image 5.5: Close-up of the ESC's power switch, typically used during calibration.
6. Operating Instructions
Once the motor and ESC are properly installed and calibrated:
- Turn on your transmitter first, then connect the battery to the ESC and turn on the ESC.
- Slowly apply throttle to check for proper motor rotation and vehicle movement.
- Monitor motor and ESC temperatures during operation. If they become excessively hot, reduce run time or check for issues like incorrect gearing or binding drivetrain components.
- After use, turn off the ESC first, then disconnect the battery, and finally turn off your transmitter.
7. Maintenance
- Regularly inspect all wiring and connectors for signs of wear or damage.
- Keep the motor and ESC clean from dirt, dust, and moisture. Use compressed air or a soft brush for cleaning.
- Check motor bearings periodically for smooth operation. Replace if they feel rough.
- Ensure the motor's heatsink fins are free from obstructions to allow for proper cooling.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Motor not running / No response | Loose connections, uncalibrated ESC, dead battery, transmitter off. | Check all wiring, calibrate ESC, charge/replace battery, turn on transmitter. |
| Motor runs in wrong direction | Incorrect motor wire connection. | Swap any two of the three motor wires. |
| Motor/ESC overheating | Incorrect gearing, excessive load, insufficient cooling, prolonged high-throttle use. | Check gear mesh, reduce pinion size, ensure proper airflow, reduce run time. |
| Erratic operation / Glitching | Radio interference, loose receiver connection, low battery voltage. | Check radio system, secure receiver connection, ensure battery is fully charged. |
| Low power / Poor performance | Low battery, incorrect gearing, motor/ESC damage. | Charge battery, adjust gearing, inspect components for damage. |
9. Specifications
9.1. 2435 4800KV Brushless Motor Specifications
| Parameter | Value |
|---|---|
| RPM | 4800KV |
| Max Current | 24A |
| Max Watts | 300W |
| Size | 2435 |
| Sensored | No |
| Can Diameter | 24mm |
| Can Length | 35mm |
| Shaft Diameter | 2mm |
| Shaft Length | 12mm |
| Bullet Connector | 3.5mm |
| Weight | 58.3g / 2.1oz |
| Max Voltage | 7.4V (2S) - 11.1V (3S) |
9.2. 25A Brushless ESC Specifications
| Parameter | Value |
|---|---|
| Continuous Current | 25A |
| Burst Current | 90A / 10sec |
| Battery Compatibility | 2 Cells LiPo / 4-6 Cells NiMh |
| BEC | Yes |
| BEC Output | 5V / 1A |
| Power Plugs | T-Male |
| Motor Plugs | 3.5mm Female Bullet Connector |
| Dimensions | 40 x 27 x 15mm |
| Weight | 29g / 1oz |
10. Warranty Information
DollaTek products are manufactured to high-quality standards. This product is covered by a limited warranty against manufacturing defects from the date of purchase. Please retain your proof of purchase for warranty claims. The warranty does not cover damage caused by misuse, improper installation, unauthorized modifications, accidents, or normal wear and tear.
11. Support
For technical assistance, troubleshooting, or further inquiries, please contact your retailer or visit the official DollaTek support channels. Always provide your product model number and a detailed description of the issue when seeking support.
