Of all the UDIRC cars, the UD1603 and 1604 are my favourite drift cars, and they reflect the updates in design and technology that UDIRC has made over the years. You can see my next review of the 1603 here, which has a brushless version that adds full ball high-speed bearings and is capable of good speeds in competition. At this price point, the UDIRC manages to be fast, efficient, and handles well, with plenty of modification options. They do run well out of the box, and I wanted to give you the basics of the bike, and hopefully you can be more certain of your purchase of the car with my presentation.

 

Design Specification:

Product number: UD1603;
Product name : 1/16, 2.4Ghz 4WD Rc racing drift car;

Motor:

• 1603 Brushed Motor: 7.4V, 380SM high performance power system
• 1603 Pro Brushless Motor: 7.4V, 3900KV brushless motor power system with finned can for better heat dissipation.

Body specification:300*150*100mm(length, width and height);

Steering gear: 17G steering servo;
Remote control category: 2.4G full proportion synchronous remote control system;
Remote control distance: about 60 meters;
Remote control time: about 15 minutes;
Speed: More than 50KM/H; Remote control battery: 4 AA batteries (not included);
Net body weight: about 1.5KG.

What is included in the pack?

The box contains almost everything you need to run the transmitter (except the 4 AA batteries needed to power the transmitter). Specific instructions:

• Racing Truck with ESC and Motor;
• User Manual;
• 2.4GHz Transmitter;
• Maintenance tools;
• Rechargeable battery;
• USB Charger.

The product is well packaged, even if the packaging has been abused, I expect the boat and major components to arrive intact.

 

Feasures of the UD1603PRO Car:

• Angel Eyes controllable headlights;
• ESP body electronic stability system (gyroscope);
• Full ball high-speed bearings;
• 2.4G full scale synchronised remote control system;
• 17g high speed servo(1kg torque);
• 4CH 2.4G 40A integrated control ESC;
• PA gear differential, all-metal driveshaft (front CVD, rear dogbone);

Component Review:

If you haven't worked with RC cars before, you may not know the UDIRC brand, but if you have, you'll know that they're a large, well-supported brand that has become very popular thanks to a balance of quality and performance, combined with having one of the most aggressive product development programmes I've ever seen. I've reviewed a number of UDIRC RC cars and they've all made huge strides in improving from generation to generation. Next, I will introduce you to the UDIRC1603PRO configuration.

For UDIRC 1603 PRO as a brand, their main focus is safety and putting it first. 

What about 2 in 1 received ESC box of the UDIRC 1603PRO?

Designed for extreme environments, this 4-channel 2.4G remote control device has excellent water and dust resistance, and the built-in Electronic Stabilisation Program (ESP) effectively prevents runaway phenomena. Meanwhile, it is equipped with low voltage cut-off and thermal overload protection to ensure that the device automatically cuts off when the voltage is abnormal or overheated to avoid damage. In addition, it also supports braking, BEC, LVC sensitivity adjustment and reverse speed setting, making the control more flexible and precise to meet the needs of advanced users for fine tuning of flight performance.

What do you think about the UDIRC1603PRO's strong magnetic motor and high performance power system?

The powerful magnetic motor gives the RC car a strong power core with its excellent torque and responsiveness, while the high performance 7.4V 380SM power system provides stable and reliable energy support for this small beast.
This combination ensures that the RC car accelerates swiftly, while also delivering an impressive range, allowing enthusiasts to enjoy a consistent and exciting RC experience.

How do you see the difference between UDIRC1603 brushless and brushed motors?

The main difference between the 7.4V, 380SM High Performance Power System and the 7.4V, 3900KV Brushless Motor Power System is their power ratings and motor matching.
The 380SM power system is for models with lower power requirements, while the 3900KV brushless motor power system is for higher power models.
Both are equipped with heat sinks with better heat dissipation effect, but the specific heat dissipation performance should be compared according to the actual usage. When choosing, the appropriate power system should be selected according to the model's power requirement and motor parameters.

As a new player, what can a planetary differential bring to the experience?

The planetary differentials, especially the models made of high-strength nylon, demonstrate excellent performance and durability. Not only do these differentials offer excellent resistance to wear and tear, they also enhance the driving experience by providing greater stability when travelling around corners.

Even more appealing, this differential offers the option of upgrading to a metal differential for those seeking even higher performance. Overall, choosing this upgradable, robust and hard-wearing planetary differential is undoubtedly an effective way to enhance vehicle performance.

 

What do you think about the metal bulkhead ties of the UDIRC1603 RC car?

The reinforced design of the UDIRC RC car's metal bulkhead tie-downs and metal arm yards significantly improves the body's ruggedness and impact resistance.
This design not only ensures the reliability of the vehicle at high speeds or during aggressive manoeuvring, but also greatly enhances its survivability in racing and extreme environments. The use of metal as a key support structure effectively disperses and absorbs impacts from different angles, thus protecting the vehicle's electronic and mechanical components from damage. This type of reinforcement provides additional safety for the RC car, allowing it to adapt to tougher and more challenging circuits, while also extending the life of the vehicle and reducing maintenance costs.
Overall, this metal reinforcement design is an admirable improvement that provides RC car enthusiasts with a more reliable and durable option.

What do you think about the metal CVD driveshaft of UDIRC1603?

The design of the metal CVD driveshaft and the steel-integrated CVD driveshaft in the front arm of the UDIRC RC car reflects the high-end configuration and careful conception of the drivetrain of this RC car.
Renowned for its superior strength, durability and ease of maintenance, the CVD driveshaft can effectively withstand high loads and reduce energy loss during power transmission, thus ensuring a more direct and efficient power transfer to the vehicle. At the same time, the use of metal materials increases the impact and corrosion resistance of the axle body, prolonging its service life.
This design not only improves the operating efficiency of the RC vehicle, but also enhances its reliability and stability under intense manoeuvring and complex environments. For players who pursue high performance and long-lasting durability, such a configuration is undoubtedly a highlight.

Conclusion

The UDIRC1603PRO RC car is a great value for money option that offers a wealth of features and excellent manoeuvrability at a fair price. Although this car is not particularly eye-catching in appearance, he is cost-effective and the average novice player can familiarise themselves with this car in no time. This RC car not only has powerful performance, but also has a stable remote control system to ensure the sensitivity and accuracy of the control. For RC car enthusiasts who are on a limited budget but are looking for high performance, the UDIRC1603PRO is undoubtedly an ideal choice.