Fastrax 36mm Aluminium Motor Heatsink Fan Unit Active RC Cooling FAST36-3

Overview

The Fastrax Aluminium Motor Heatsink Fan Unit (Fan On Top) FAST36-3 is an essential cooling accessory for RC enthusiasts who demand peak performance from their electric RC cars and trucks. Whether you're bashing your RC buggy, crawler or stadium truck across the UK's varied terrain, this motor cooling solution ensures your brushless or brushed motor stays within optimal operating temperature, preventing thermal cutouts and extending component lifespan. Designed for serious hobbyists and weekend bashers alike, this 36mm aluminium heatsink fan unit delivers effective thermal management in a compact, lightweight package that installs in minutes without requiring modifications to your RC vehicle.

Motor heat is one of the most common challenges facing RC car UK enthusiasts during extended running sessions. When temperatures climb, ESCs trigger thermal cutouts to protect themselves, cutting your driving session short and compromising performance. The Fastrax motor cooling fan addresses this directly with active airflow management, pulling heat away from your motor and dissipating it efficiently. With a pre-fitted 3-pin Futaba connector, installation is straightforward—simply plug it into your receiver and enjoy cooler, more consistent performance. This is the kind of upgrade that separates competitive racers from casual drivers, and it's why so many UK RC shops recommend it as a must-have accessory for any serious build.

Real customers have reported that this fan unit keeps motors cool during intense bashing sessions, fits perfectly on popular RC platforms like the Traxxas Slash Ultimate and FTX Rokatan, and makes a measurable difference in preventing thermal throttling. At just £7.99, it's one of the most affordable ways to unlock extended running times and more reliable performance from your electric RC car. The aluminium construction ensures durability through thousands of flight hours, and the compact fan-on-top design means it integrates seamlessly into most modern RC setups without interfering with other components.

Key Features

• 36mm Aluminium Heatsink — The substantial aluminium heatsink body provides excellent thermal conductivity, drawing heat away from your motor efficiently and dissipating it into the surrounding air, which is critical for maintaining consistent motor performance during long bashing sessions and competitive racing.
• Active Cooling Fan — Unlike passive heatsinks, this unit features an integrated cooling fan positioned on top that actively pulls air across the heatsink fins, dramatically improving heat dissipation compared to static cooling solutions and preventing thermal cutouts.
• Fan-On-Top Design — The strategic placement of the fan on top of the heatsink maximises airflow and clearance, making it compatible with a wide range of RC cars and trucks without interfering with body shells, chassis components or other mechanical elements.
• Pre-Fitted 3-Pin Futaba Connector — This unit arrives with a 3-pin Futaba plug already attached, meaning you can connect it directly to any Futaba-compatible receiver without needing soldering, adapters or extensions, making installation incredibly user-friendly for beginners and experienced modellers alike.
• Compact and Lightweight — At just 36mm in diameter, this cooling unit adds minimal weight and bulk to your RC setup, ensuring it won't affect your vehicle's balance, handling or acceleration whilst still delivering significant thermal management benefits.
• Universal Compatibility — Verified to fit popular RC platforms including the Traxxas Slash Ultimate, FTX Rokatan, Maverick Q2 and many other 1/10 and 1/8 scale RC cars and trucks, making it an ideal universal upgrade for enthusiasts with multiple vehicles.
• Easy Installation — Customers report that fitting takes just two minutes, requiring no modifications to your RC car or complex wiring, making this an ideal first upgrade for those new to RC customisation and performance tuning.
• Proven Performance — Real UK users have documented that this fan prevents thermal cutouts during intense bashing, maintains cooler motor temperatures across extended running sessions, and represents exceptional value for money as a reliability and performance upgrade.

Technical Performance

The Fastrax Aluminium Motor Heatsink Fan Unit FAST36-3 is engineered from high-grade aluminium, a material renowned for its excellent thermal conductivity and lightweight properties—essential qualities for RC motor cooling applications. The 36mm diameter heatsink provides substantial surface area for passive heat dissipation, whilst the integrated fan creates active airflow that dramatically accelerates cooling compared to static heatsink-only solutions. This combination is particularly valuable for brushless motor setups running on modern LiPo batteries, where sustained high current draw generates significant heat that must be managed to maintain peak torque delivery and prevent ESC thermal shutdown. The fan operates from standard RC receiver power, drawing minimal current whilst providing consistent cooling across the entire motor, ensuring that whether you're running a high-KV brushless unit for speed or a low-KV motor for torque and crawling performance, thermal stability is maintained. The pre-fitted Futaba connector eliminates the need for soldering or complex wiring, bringing this cooling technology within reach of all skill levels. Independent testing from UK RC enthusiasts confirms that this unit effectively reduces motor operating temperature by 10-15 degrees Celsius under sustained load, directly translating to longer running times, more consistent performance throughout a battery cycle, and extended component lifespan across your entire drivetrain.

What's in the Box

• Fastrax Aluminium 36mm Motor Heatsink Unit with integrated cooling fan
• Pre-fitted 3-pin Futaba connector cable

Frequently Asked Questions

• Will this motor cooling fan fit my Traxxas Slash or other popular RC truck? — Yes, this unit is confirmed compatible with the Traxxas Slash Ultimate and many other 1/10 and 1/8 scale RC cars and trucks. The 36mm size and fan-on-top design ensure it fits without interfering with body shells or chassis components. If you're unsure about compatibility with a specific model, we recommend checking the mounting location on your vehicle or contacting our team at RC Model Shop.
• How much cooler does this fan make my motor? — Real-world testing from UK RC users shows this unit reduces motor operating temperature by approximately 10-15 degrees Celsius under sustained high-current load. This seemingly small temperature reduction translates directly into longer usable runtime, more consistent power delivery, and significantly reduced risk of thermal cutouts during intense bashing or racing sessions.
• Is this suitable for beginners? — Absolutely. This is one of the most beginner-friendly upgrades available for RC cars. Installation takes approximately two minutes, requires no soldering or complex wiring thanks to the pre-fitted Futaba connector, and the benefits are immediately noticeable. Whether you've owned an RC car for years or just started your hobby, this upgrade delivers measurable performance improvements and improved reliability.
• What size motor does this heatsink fit? — This 36mm aluminium heatsink is designed for standard 1/10 and 1/8 scale brushless and brushed motors commonly found in RC cars, buggies, trucks and crawlers. The universal mounting design accommodates most motor installations, though specific fitment depends on your vehicle's motor mounting plate design.
• Does this fan need a separate power source? — No. The fan draws power directly from your RC receiver's spare channel or auxiliary power output, making installation straightforward. The pre-fitted 3-pin Futaba connector plugs directly into compatible receivers, requiring no additional power sources, batteries or wiring.
• Will adding this fan affect my RC car's weight or performance? — The heatsink and fan assembly is extremely lightweight, adding minimal mass to your vehicle. This small weight addition is more than offset by the performance benefits gained through reduced thermal throttling and extended runtime, making it a net positive upgrade for both speed and reliability.
• How long does the fan run? — The fan operates whenever power is supplied to your receiver. Many users choose to run it throughout their driving session for continuous cooling, whilst others activate it only during intense driving to conserve power. Most modern RC batteries easily support continuous fan operation without noticeable runtime reduction.
• Is the cable long enough to reach my receiver? — Yes. Verified users report that the pre-fitted cable is the perfect length for most standard RC car and truck installations, reaching from typical motor mounting locations to receiver positions without requiring extension cables or adapters.

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 Fastrax Aluminium Motor Heatsink Fan Unit (Fan On Top) FAST36-3 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.