UDI RC ARROW Brushless RC Speedboat 645mm Deep-V Hull 50km/h 3S LiPo UDI005

Overview

The UDI RC ARROW is a high-performance brushless RC powerboat that delivers serious speed and reliability for experienced RC enthusiasts. Built by UDIRC Technology, this 25-inch deep-V hull speedboat achieves an impressive 50km/h top speed on 3S LiPo battery power, making it one of the most exciting ready-to-run RC boats available in the UK market. Whether you're looking for a ready to run RC speedboat that performs like a competition machine or a brushless RC boat that combines cutting-edge technology with ease of use, the ARROW delivers on both fronts. The boat's modern hull design features a bold colour scheme that makes a real statement on the water, whilst its engineering focuses entirely on performance, stability and durability. This is a boat that means business.

The ARROW is purpose-built for speed and control, combining a rigid ABS hull construction with an innovative water-cooling system that keeps the KV1800 brushless motor running cool run after run. Cable-drive efficiency ensures smooth power delivery, whilst the precision marine ESC provides multiple layers of protection and intelligent handling correction. The included 2.4GHz radio system with stability management receiver means you get a boat that's easier to control at extreme speeds, with the confidence to punch the throttle and maintain directional stability. This is an excellent choice for buyers seeking a high-speed RC boat that's packed with modern features and ready to deliver thrilling performance on day one.

At 1233 grams and measuring 645mm in length, the ARROW is substantial enough to feel premium in your hands, yet not so large that it's difficult to transport or launch. The self-righting hull design means if the boat flips, it will automatically return to the correct orientation, eliminating the frustration of manual recovery. With an included 2200mAh LiPo battery and AC/DC charger, everything you need to get started is in the box.

Key Features

• KV1800 Brushless Motor with Water Cooling — The heart of the ARROW is a powerful KV1800 brushless motor that delivers the horsepower needed for extreme 50km/h speed performance. Cooling water is routed through a unique sealed motor jacket, allowing the coolant to flow directly against the motor for maximum heat transfer efficiency. This innovative water-cooling system keeps the motor running at peak temperature, enabling longer run times and trouble-free all-day performance without thermal throttling.
• Waterproof Marine ESC with Integrated Cooling — The ESC is engineered specifically for aquatic use with an innovative waterproof design and integrated water cooling with heat sink. It includes built-in low-voltage detection for battery protection, thermal overload protection, voltage overload protection, locked rotor protection, and throttle neutral setting protection. These multiple safety systems work together to keep your investment safe and ensure reliable performance in various water conditions.
• 25-Inch Deep-V Hull Construction — The ARROW's hull is built using layered ABS plastic construction for maximum rigidity where it matters most—the transom and ride pad. This design is lightweight yet incredibly strong, able to withstand the stress of high-voltage brushless horsepower without the weight penalty of a fiberglass hull. The deep-V hull design with a 23-degree dead rise angle cuts through water smoothly and maintains stability at high speed.
• High-Torque Waterproof Servo — Responsive steering is critical at extreme speeds, and UDIRC delivers a high-torque steering servo with an integrated waterproof shell. This keeps the steering gear completely waterproof and protected from water ingress, ensuring responsive and reliable directional control even in demanding conditions.
• UA13 2.4GHz Radio System with Stability Management — The included 2.4GHz transmitter offers long-range, high-output signal with extended control distance of approximately 120 metres. The receiver features intelligent stability management that automatically senses the boat's direction and makes steering corrections to provide straight-ahead full throttle acceleration without loss of control. The system can be fine-tuned for different water conditions using the multi-function knob on the transmitter, and includes low battery alarm and out-of-range alarm for peace of mind.
• Self-Righting Hull Design — If the boat flips, the hull is engineered to turn over on demand and return to the correct orientation automatically. This eliminates the need for manual recovery and keeps your boating session fun and uninterrupted.
• Dual Battery Alarm Protection — The radio system includes double protection with both low battery alarm and out of range alarm. These alerts allow you to monitor the boat's status and avoid losing control or running out of power far from shore.
• Complete Ready-to-Run Package — Everything needed to get on the water is included: the boat with integrated ESC and motor, 2.4GHz transmitter, 2200mAh rechargeable LiPo battery, and AC/DC charger. Simply charge the battery and you're ready to launch within minutes.

Technical Performance

The UDI RC ARROW represents modern brushless RC boat engineering at its finest. Powered by a KV1800 brushless motor driving through cable transmission, the boat achieves speeds of 40–50km/h depending on water conditions and battery state of charge. The motor is paired with a waterproof marine ESC that integrates sophisticated thermal management and multiple protection circuits, ensuring reliability during extended use. The 2200mAh 3S LiPo battery (11.1V) provides approximately 7 minutes of running time and takes about 190 minutes to charge using the included AC/DC adaptor with 15V 800mA output. The hull measures 645mm in overall length with a 170mm beam and 110mm height, displacing 1233 grams—a size that provides excellent stability and manoeuvrability without being unwieldy. The deep-V hull design with a 23-degree dead rise angle cuts through chop efficiently, whilst the layered ABS construction provides the rigidity needed to handle high-speed acceleration and turning forces. The integrated cable-drive system delivers smooth power transfer with minimal vibration, and the water-cooling system maintains consistent performance throughout your session. The boat is suitable for users aged 14 years and above, with skill level 3 recommended due to the high speed and performance demands.

What's in the Box

• UDI RC ARROW brushless RC boat with integrated ESC and KV1800 motor
• 2.4GHz transmitter with multi-function tuning knob
• 2200mAh 3S LiPo rechargeable battery (11.1V)
• AC/DC adaptor and 3-cell LiPo balancing charger
• Maintenance tools
• User manual

What You Need to Complete

• Four AA batteries for the transmitter (not included)

Frequently Asked Questions

• What is the top speed of the UDI RC ARROW brushless boat? — The ARROW achieves speeds of 40–50km/h on a fully charged 3S LiPo battery. Actual speed depends on water conditions, battery charge level, and throttle setting. The boat features selectable high and low-speed modes for different scenarios.
• How long does the battery last per charge? — The included 2200mAh 3S LiPo battery provides approximately 7 minutes of playing time per charge. Charge time is about 190 minutes using the included AC/DC charger. For extended sessions, purchasing additional LiPo batteries is recommended.
• Is the ARROW suitable for beginners to RC boating? — The ARROW is recommended for skill level 3 and ages 14 and above, making it suitable for intermediate to experienced users rather than complete beginners. However, the stability management system built into the receiver makes high-speed control much easier than traditional boats. If you're new to RC boating, the intelligent steering corrections work invisibly in the background to help maintain straight-line acceleration and smoother turns, making the learning curve less steep than expected.
• What battery does the ARROW need and can I use a different one? — The ARROW requires a 3S LiPo battery (11.1V nominal voltage). The included 2200mAh battery is ideal for getting started, but the ESC can accept various 3S LiPo batteries with different capacities. Higher capacity batteries (such as 3000mAh or 5000mAh 3S packs) will provide longer run times, whilst maintaining the same voltage. Always use a quality LiPo battery from a reputable manufacturer and use the included balancing charger.
• Is the boat fully waterproof? — Yes, the ARROW features double boat cover design for superior waterproof protection. The motor jacket is sealed for water cooling whilst keeping water out of electrical components. The ESC features innovative waterproof design, and the servo has an integrated waterproof shell. The boat is designed for water-based use and features a self-righting hull if it flips.
• What is the radio control distance? — The 2.4GHz UA13 radio system provides a control distance of approximately 120 metres. The system uses high-output, long-range signal technology and includes out-of-range alarm to alert you if the boat exceeds the control range.
• What makes the water cooling system special? — Unlike air-cooled RC boats, the ARROW routes cooling water directly through a sealed jacket around the motor. This allows the coolant to transfer heat much more efficiently than air cooling, keeping the motor at optimal temperature during sustained high-speed runs. This enables longer continuous performance without thermal throttling or component degradation.
• How is the hull different from other speedboats? — The ARROW's hull is constructed using layered ABS plastic built up in multiple sections for maximum rigidity, particularly in the transom and ride pad—the areas that experience the most stress. This construction is lighter than fiberglass hulls but nearly as strong, providing excellent performance without excess weight. The transom bulkhead incorporates integrated bosses for battery compartment, servo, ESC and drive strut, eliminating the need for additional hardware.
• What is stability management and how does it help? — Stability management is an intelligent receiver system that continuously senses the boat's direction and automatically makes steering corrections. When you punch the throttle, it prevents the boat from veering off course at extreme speeds. During turns, it makes intuitive corrections to maintain your intended line, then allows you to hammer the throttle earlier in the turn for faster exit speeds. This system runs on high-speed precision electronics with superior tuning algorithms and can be adjusted using the multi-function knob on the transmitter for different water conditions.

Why Buy from RC Model Shop?

RC Model Shop is a trusted UK RC retailer and authorised dealer for all the brands we stock, including Traxxas, ARRMA, Losi, FTX, Hobbywing, Spektrum and more. Based in Walsall, we have a physical store where customers are welcome to come in, view products and purchase in store. Whether you are a seasoned competitor, a weekend basher, or just discovering the world of RC for the first time, our team of experienced RC enthusiasts is here to help you find the perfect setup and provide ongoing support. Order the UDI RC ARROW SILICON RUBBER UDI005-40 today with confidence, knowing you are buying from an authorised retailer with genuine products, expert knowledge and a commitment to customer satisfaction. Shop online or visit us in Walsall — we look forward to helping you get the most out of your RC experience.