Castle COBRA 5 8S ESC with 20A Peak BEC for 1/5 and 1/7 Scale RC Vehicles – P-CC010-0179-00

• Model Number: P-CC010-0179-00
• Brand: Castle Creations
• ESC Type: 32-bit brushless electronic speed controller
• Scale Compatibility: 1/5 and 1/7 scale RC vehicles
• Maximum Vehicle Weight: 19 kg (42 lbs)
• Voltage Range: 11.1–33.6V (8S LiPo compatible)
• Internal BEC Output Range: 5.0–8.5V adjustable in 0.1V increments
• BEC Peak Current: 20A
• Motor Type: Sensored and sensorless brushless compatible
• Length: 101.2 mm
• Width: 63.3 mm
• Height: 59.5 mm
• Weight: 374 g
• Construction: CNC machined aluminium case potted in waterproof epoxy
• Heatsink: Premium forged aluminium with elliptical fins
• Cooling Fan: Oversized 50mm thermally controlled fan
• Weatherproofing: Fully waterproof design for all-weather operation
• Data Logging: Double the maximum sample frequency of previous generations, 8x increased logging time, looping feature prevents recording interruptions
• Data Points Captured: Motor speed, current draw, voltage, temperature, ESC electrical motor timing, acceleration via onboard accelerometer
• Processing Power: 32-bit digital processor for smoother motor control
• Thermal Management: CRYO-DRIVE technology for improved thermal performance at partial throttle
• Tuning Features: Adjustable braking curves, separate brake and reverse curves, improved braking adjustability
• Programmable Settings: Six common settings adjustable via transmitter including cut-off voltage and drag brake
• Auxiliary Wire: Included for on-the-fly transmitter-based adjustments
• Alert System: Audible alerts for motor over-temperature and low-voltage cutoff
• Software: Castle Link V4 USB programming adapter included for computer-based tuning and free firmware updates
• Sensor Wire: 300mm direct-connect sensor wire included
• Barcode: 0819326013416

Overview

The Castle Creations COBRA 5 8S ESC represents the pinnacle of electronic speed controller technology for serious 1/5 and 1/7 scale RC enthusiasts in the UK. Building on the proven success of the COBRA 10 and COBRA 8 platforms, this advanced ESC has been engineered specifically for high-performance large-scale RC vehicles that demand precision, durability and exceptional power-handling capabilities. Whether you're piloting a competitive 1/7 scale buggy, a hard-charging 1/5 scale monster truck, or any serious brushless RC car in between, the COBRA 5 delivers the control and reliability that separates championship-winning setups from the rest of the pack.

The COBRA 5 is purpose-built for RC drivers who refuse to compromise on performance. This isn't an entry-level ESC for beginners—it's a professional-grade speed controller designed for vehicles weighing up to 19 kg (42 lbs) that operate on 8S LiPo battery systems (11.1–33.6V). With its 32-bit processing architecture, waterproof construction, thermally optimised design and comprehensive tuning capabilities via Castle Link software, the COBRA 5 gives you the tools to extract maximum performance whilst protecting your expensive drivetrain components from unnecessary stress and premature failure.

What truly sets the COBRA 5 apart in the competitive RC car UK market is its intelligent approach to drivetrain protection and predictable handling. New adjustable braking curves and independent reverse settings mean you can fine-tune deceleration and reverse behaviour to eliminate the risk of broken gears, snapped driveshafts and blown differentials—common failure points in high-power 1/5 and 1/7 scale vehicles. Combined with enhanced data logging, thermal management technology and professional-grade construction, the COBRA 5 transforms raw electrical power into refined, controllable performance.

Key Features

• 32-bit Processing Power — The COBRA 5 employs advanced 32-bit digital processing for smoother motor control and dramatically improved response time compared to older 16-bit systems, allowing you to feel every nuance of throttle input and deliver the precision required in competitive racing or technical driving.
• Enhanced Data Logging System — This ESC captures twice the maximum sample frequency of previous-generation controllers, with 8 times the logging capacity, allowing you to record extended driving sessions without clearing logs and analyse performance trends over longer periods with granular detail.
• New Data Points via Onboard Accelerometer — Beyond voltage and current monitoring, the COBRA 5 captures ESC electrical motor timing data and real-time acceleration measurements via its integrated accelerometer, giving you insights into tyre slippage, motor efficiency and dynamic performance that previously required external sensors.
• Adjustable Braking and Reverse Curves — Instead of a one-size-fits-all braking system, you can now independently programme braking and reverse behaviour, dramatically reducing drivetrain stress and allowing smoother, more predictable deceleration that protects gears, driveshafts and differentials during hard braking and aggressive reversing.
• CRYO-DRIVE Thermal Technology — This proprietary system minimises the time electrical components spend generating heat during partial-throttle operation—where most driving actually occurs—resulting in lower operating temperatures and improved reliability during extended running sessions.
• Highly Adjustable Internal BEC — The integrated Battery Elimination Circuit (BEC) outputs a maximum of 20A peak and can be finely tuned from 5.0V to 8.5V in 0.1V increments, giving you precise voltage regulation to match your servo power requirements without the need for external BEC units.
• Rugged CNC Aluminium Construction — The entire ESC is housed in a precision-machined aluminium case potted in waterproof epoxy, protecting all electronics from moisture, dust and impact whilst promoting efficient heat transfer away from critical components.
• Premium Forged Heatsink with Elliptical Fins — The enlarged heatsink features aerodynamically optimised elliptical fins for superior airflow and maximum heat dissipation, ensuring the ESC remains cool even during sustained high-current operation in demanding 1/5 and 1/7 scale applications.
• Oversized Thermally Controlled 50mm Cooling Fan — An industrial-strength 50mm cooling fan with intelligent thermal control spins up as needed to maintain optimal operating temperature, extending component lifespan and maintaining consistent performance throughout extended racing sessions.
• Full Waterproof Design — The potted epoxy construction and waterproof sealing mean the COBRA 5 is sealed against all-weather running, allowing you to push hard in wet conditions without fear of electronics failure from moisture ingress.
• Castle Link V4 USB Programming Adapter Included — Connect the supplied Castle Link V4 USB adapter to your PC or Mac and unlock the full potential of the COBRA 5 with access to advanced tuning parameters, free firmware updates, and comprehensive performance analysis tools without purchasing additional software.
• Convenient Transmitter Programming — Six common settings including cut-off voltage and drag brake can be adjusted directly from your radio transmitter without needing a computer, allowing field adjustments during practice or competition.
• Auxiliary Wire for On-the-Fly Adjustments — Programme your transmitter to send adjustment signals via the auxiliary wire function, allowing you to modify settings like brake strength during a run without stopping or reprogramming.
• Audible Alert System — Built-in audible warnings alert you to common issues such as motor over-temperature and low-voltage cut-off, providing immediate feedback without needing to monitor telemetry data or warning lights.

Technical Performance

The COBRA 5 8S ESC is engineered to handle the demanding electrical loads encountered in high-performance 1/5 and 1/7 scale RC vehicles. Its 11.1–33.6V input range (8S LiPo compatible) means you can deploy 2-cell through 8-cell battery packs, giving you flexibility in choosing the power level that suits your application, whether you're running a lightweight 1/7 scale buggy or a heavy-duty 1/5 scale monster truck up to 19 kg. The 32-bit processor delivers lightning-fast calculation cycles, resulting in smoother acceleration curves, more linear throttle response and superior motor control consistency compared to earlier-generation 8-bit and 16-bit architectures found in budget RC ESCs.

Thermal management is paramount in modern brushless RC systems, and Castle Creations has invested heavily in the COBRA 5's cooling infrastructure. The premium forged aluminium heatsink with its distinctive elliptical fins maximises surface area for air dissipation, whilst the oversized 50mm thermally controlled fan responds dynamically to internal temperature monitoring, spinning faster as load increases. The CRYO-DRIVE technology works alongside this passive and active cooling by intelligently modulating electrical component activity during partial-throttle operation—statistically the most frequent driving state—thereby reducing heat generation at the source rather than simply trying to dissipate excess heat after the fact.

The integrated 20A peak BEC (Battery Elimination Circuit) eliminates the need for a separate external BEC or receiver battery pack in most applications. With adjustable voltage output spanning 5.0V to 8.5V in fine 0.1V increments, you can precisely match your servo voltage requirements, whether running lightweight digital servos (typically 6.0V) or standard analogue servos (typically 5.0V or 6.0V). This flexibility ensures your entire servo system receives optimal voltage for reliability and performance without over-voltage stress that can shorten component lifespan.

Construction quality throughout the COBRA 5 reflects its professional-grade positioning. The precision-machined CNC aluminium case provides structural rigidity, thermal conductivity and corrosion resistance superior to plastic-bodied competitors. The entire assembly is potted in waterproof epoxy resin, which simultaneously protects circuitry from moisture ingress and acts as a thermal compound, efficiently transferring heat from the electronics to the metal case and heatsink assembly. This potting approach is standard in military and industrial electronics but rarely seen at this price point in consumer RC gear, making the COBRA 5 genuinely waterproof for all-weather UK running.

What's in the Box

• Castle Creations COBRA 5 8S ESC (Model P-CC010-0179-00)
• 300mm direct-connect sensor wire for brushless motor speed/temperature feedback
• Castle Creations COBRA decals for customisation
• Castle Link V4 USB programming adapter for PC/Mac computer tuning and firmware updates
• COBRA Quick Start Guide with essential setup instructions

Frequently Asked Questions

• Is the Castle COBRA 5 ESC suitable for beginners or only experienced RC racers? — The COBRA 5 is engineered for experienced RC enthusiasts and serious competitors rather than beginners. Its advanced tuning features, extensive data logging and professional-grade capabilities are wasted on someone new to the hobby. However, if you own a high-performance 1/5 or 1/7 scale RC vehicle and you're committed to competitive driving or high-powered bashing, the COBRA 5 is absolutely the right choice. Beginners should start with simpler ESCs on smaller-scale ready-to-run RC cars UK retailers stock.
• What battery does the Castle COBRA 5 need? — The COBRA 5 operates on any 8S LiPo battery configuration, which means battery packs from 2S (7.4V) up to 8S (29.6V nominal, 33.6V fully charged) are compatible. Most competitive 1/7 and 1/5 scale RC vehicles use 6S or 8S packs for optimal performance. Always consult your vehicle manufacturer's recommendations for specific battery voltage and capacity specifications to ensure your motor and transmission can handle the resulting power output safely.
• How does the COBRA 5 compare to the COBRA 8 and COBRA 10? — The COBRA 5 is specifically optimised for 1/5 and 1/7 scale vehicles, whilst the COBRA 8 and COBRA 10 are engineered for larger 1/5 and 1/4 scale applications requiring higher current handling. The COBRA 5 offers the same advanced 32-bit processing, enhanced data logging and CRYO-DRIVE technology as its larger siblings, but in a more compact, lighter package suitable for the specific weight and power requirements of 1/5 and 1/7 scale models. If you're running 1/5 or 1/7 scale, the COBRA 5 is purpose-built for your application and offers better weight distribution than oversized alternatives.
• Can I use the COBRA 5 with my existing brushless motor? — Yes, the COBRA 5 features a direct-connect sensor wire (supplied) that works with sensored brushless motors, which includes virtually all modern RC brushless outrunner and inrunner designs. If your motor has an integrated sensor or a separate sensor wired to your ESC's sensor port, the COBRA 5 will communicate with it seamlessly. Some very old brushless motors lack sensor capability, in which case the COBRA 5 can operate in sensorless mode, though sensored operation is always preferable for smoother low-speed control and better efficiency.
• Does the COBRA 5 work with my radio transmitter and receiver? — Yes, the COBRA 5 accepts standard PWM (pulse-width modulation) signals from any RC transmitter and receiver combination. Whether you're using a Spektrum, Futaba, Sanwa or any other major brand transmitter, as long as your receiver outputs a standard servo signal, the COBRA 5 will work perfectly. The ESC also features an auxiliary wire for additional transmitter-based programming of select functions, assuming your transmitter supports auxiliary channel outputs.
• What does the Castle Link V4 USB adapter let me do? — The Castle Link V4 adapter (included with the COBRA 5) connects your ESC to a Windows PC or Mac computer via USB, opening access to the Castle Creations tuning software. From here you can programme all advanced parameters including braking curves, reverse settings, motor timing, throttle curves, BEC voltage, low-voltage cut-off threshold, temperature sensors and much more. You can also view real-time telemetry data, analyse logged performance data, diagnose fault codes and update ESC firmware to the latest version—all free of charge with no subscription required.
• How does the enhanced data logging help me optimise my RC car? — The COBRA 5 captures twice the sample frequency and eight times the recording duration of previous models, logging motor speed, current draw, voltage, temperature, motor timing adjustments and acceleration data via its onboard accelerometer. By reviewing this data after a driving session, you can identify when and where tyre slippage occurs, detect inefficient motor timing settings, spot voltage sag issues (indicating insufficient battery capacity), optimise your braking curves for better predictability and make data-driven suspension and setup adjustments. This is competitive-level performance analysis capability previously available only with expensive external telemetry systems.
• Is the COBRA 5 truly waterproof for wet weather UK racing? — Yes, the entire ESC is potted in waterproof epoxy resin and housed in a sealed aluminium case, making it fully waterproof for all-weather operation. You can run the COBRA 5 in wet conditions, muddy tracks or even light water crossings without fear of electronics failure from moisture ingress. However, avoid submerging the ESC completely or deliberately driving through deep water, as whilst the electronics themselves are sealed, the connector ports can still allow water ingress if completely submerged for extended periods.
• What is CRYO-DRIVE technology and why should I care? — CRYO-DRIVE is Castle Creations' proprietary system that reduces heat generation at the electrical component level by intelligently optimising switch timing and duty cycles during partial-throttle operation. Since most RC driving occurs at partial throttle rather than full power, this system dramatically reduces ESC temperature in the operating conditions you experience most frequently. Lower operating temperatures mean longer component lifespan, more consistent performance throughout a battery pack's discharge cycle and reduced thermal stress on solder joints and capacitors. It's an elegant engineering solution that addresses the real-world thermal challenges of high-power RC ESCs.
• Can I adjust settings from my transmitter or do I need a computer every time? — You can programme six common settings directly from your radio transmitter without any computer involvement, including cut-off voltage and drag brake. Once these are set to your preference, you're done—no computer required for day-to-day driving. The Castle Link software is primarily for deeper tuning, firmware updates and data analysis. The auxiliary wire function also allows you to programme additional transmitter-based adjustments if your radio supports auxiliary channels.

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 Castle COBRA 5 8S ESC with 20A Peak BEC for 1/5 and 1/7 Scale RC Vehicles – P-CC010-0179-00 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.

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