Overview
The Hobbywing QUICRUN 3660SL 3700KV G2 Motor in black is a high-performance brushless sensorless motor engineered for 1/10 scale RC trucks and monster trucks. This is a serious upgrade component for enthusiasts looking to boost the power and efficiency of their RC car UK setups. Whether you're running a ready to run RC model or building a custom setup, the QUICRUN 3660SL delivers explosive output power and reliable performance that will transform your RC driving experience.
Built with Hobbywing's proven G2 engineering, this motor represents a significant leap forward in brushless RC motor technology. It combines raw power with exceptional efficiency, making it an ideal choice for off-road bashers and serious hobbyists who demand more from their RC truck performance. The 3700KV rating delivers responsive throttle control and impressive acceleration across 2S and 3S LiPo battery configurations, making it versatile for both casual weekend drivers and competitive racers in the UK RC community.
Key Features
- 10% Increased Output Power — Compared to equivalent motors in the same specification class, the QUICRUN 3660SL G2 delivers 10% more maximum output power, giving your RC vehicle noticeably more acceleration and top-end performance when you need it most.
- 8% Higher Motor Efficiency — The motor's efficiency is significantly improved over same-specification competitors, meaning more of your battery's energy is converted into usable power rather than wasted as heat, extending runtime and improving reliability.
- Lower Operating Temperature — Thanks to superior efficiency engineering, the QUICRUN 3660SL runs cooler under identical load conditions compared to rival brushless RC motors, which reduces thermal stress on internal components and extends the motor's working lifespan.
- Explosion-Proof Rotor Design — The rotor features reinforced front and rear aluminium end plates that dramatically improve overall balance and structural integrity, while high-strength tensile materials wound into the rotor construction provide exceptional protection against mechanical failure and deformation.
- Premium Build Materials — Constructed from high-hardness aluminium with a precision CNC end cover and 0.2mm ultra-thin low-loss silicon steel sheets, this motor benefits from first-line brand high-precision bearings and 200°C high-temperature-resistant enamelled wire for outstanding durability.
- Modular Detachable Design — The motor features a convenient modular detachable structure that allows you to easily disassemble the motor for routine cleaning, maintenance, and repairs, effectively prolonging service life and maintaining peak working efficiency between uses.
- 4-Pole Sensorless Brushless Technology — This is a true brushless sensorless motor with 4-pole configuration, delivering smooth, reliable power delivery without the maintenance requirements of brushed motors, making it perfect for both beginners and experienced RC enthusiasts.
Technical Performance
The QUICRUN 3660SL 3700KV G2 is a purpose-built motor for 1/10 scale off-road and on-road RC vehicles, particularly trucks and monster trucks that demand reliable, powerful performance. At just 278 grams and measuring 36mm in outer diameter with a 60mm length, it offers a compact form factor that fits standard motor mounts whilst delivering substantially more power than older generation motors. The 5mm shaft diameter is the standard specification for most 1/10 scale RC gearboxes, ensuring straightforward installation in your existing build. Running on 2S or 3S LiPo batteries at 3700KV, this motor provides the sweet spot between voltage compatibility and responsiveness — 3700KV is considerably higher than larger 3650-format motors, translating to quicker throttle response and higher peak RPM capabilities. The no-load current specification of 5.4A demonstrates efficient power consumption during idle running, whilst the 4-pole construction ensures smooth commutation and reliable performance across all throttle ranges. Front and rear bearings are matched D16x5mm specifications (front and rear both D16*D5*T4), providing robust radial support to the rotating shaft assembly. The motor's construction with high-hardness aluminium components and precision-engineered silicon steel laminations ensures minimal energy losses and excellent thermal characteristics. This is a serious performance upgrade for any brushless RC truck, monster truck, or off-road enthusiast running 2S or 3S LiPo power.
What's in the Box
- Hobbywing QUICRUN 3660SL 3700KV G2 Brushless Motor (black)
- Motor assembly with pre-installed bearings and shaft
What You Need to Complete
- Brushless ESC (electronic speed controller) rated for 3S LiPo or compatible with your motor
- 2S or 3S LiPo battery pack
- Battery charger suitable for LiPo cells
- Motor mount compatible with 36mm diameter motors
- Pinion gear matched to your gearbox ratio and ESC timing configuration
Frequently Asked Questions
- Is the Hobbywing QUICRUN 3660SL suitable for my RC truck or monster truck? — Yes, this motor is specifically designed for 1/10 scale trucks and monster trucks. It works with standard motor mounts that accept 36mm diameter motors and integrates directly with most modern brushless ESCs and 2S/3S LiPo battery systems used in UK RC builds.
- What battery does the QUICRUN 3660SL 3700KV need? — This motor is rated for 2S or 3S LiPo batteries. A 2S battery (7.4V nominal) will give you calmer, more controlled performance, whilst a 3S battery (11.1V nominal) will deliver maximum power output and higher top speed. Always use a compatible brushless ESC designed for your chosen battery voltage.
- How does this compare to the QUICRUN 3660SL 3150KV? — The main difference is the KV rating: this 3700KV version spins faster than the 3150KV, delivering higher top speed and quicker throttle response, but with slightly higher current draw. The 3150KV variant provides more torque and smoother power delivery. Choose 3700KV for speed-focused setups and 3150KV for torque-focused or heavier builds.
- What makes the G2 generation better than older QUICRUN motors? — The G2 generation offers 10% more output power, 8% higher efficiency, lower operating temperatures, and improved rotor construction with explosion-proof design. These upgrades mean faster acceleration, longer runtime, cooler operation, and greater reliability compared to previous generations.
- How much hotter will this motor run compared to brushed motors? — Modern brushless motors like the QUICRUN 3660SL run cooler than brushed alternatives due to superior efficiency, even though they produce more power. The G2's 8% efficiency improvement over competitive brushless motors means you'll experience cooler operation than most direct competitors.
- Is the QUICRUN 3660SL easy to maintain? — Yes, the modular detachable design allows you to easily open the motor for cleaning and routine maintenance without special tools. This ease of maintenance helps extend the motor's service life and keeps it running at peak efficiency between races and bashing sessions.
- What pinion gear should I use with this motor? — Pinion gear selection depends on your desired top speed, weight, and ESC timing. Higher KV motors like the 3700KV typically run smaller pinion gears (15T-17T) compared to lower KV motors. Consult your RC vehicle's manual or a UK RC specialist for the recommended range for your specific build.
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 HOBBYWING QUICRUN 3660SL 3700KV G2 MOTOR BLACK HW30404501 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.
- Scale: 1/10
- Motor Type: Brushless Sensorless
- Motor Size: 3660SL
- KV Rating: 3700KV
- Pole Count: 4-pole
- Battery Compatibility: 2S-3S LiPo
- Outer Diameter: 36mm
- Motor Length: 60mm
- Shaft Diameter: 5mm
- Weight: 278g
- No-load Current: 5.4A
- Front Bearing: D16*D5*T4
- Rear Bearing: D16*D5*T4
- Applications: 1/10 Truck, Monster Truck
- Construction Materials: High-hardness aluminium, CNC end cover, 0.2mm ultra-thin low-loss silicon steel sheets
- Rotor Design: Explosion-proof with reinforced front and rear aluminium end plates
- Winding: High-strength tensile materials with 200°C high-temperature-resistant enamelled wire
- Bearing Type: High-precision high-quality first-line brand bearings
- Design Type: Modular detachable for easy maintenance
- Performance Increase: 10% increase in maximum output power compared to same specification motors
- Efficiency Gain: 8% higher efficiency than same specification competitors
- Thermal Performance: Lower operating temperature under identical load conditions
We want to make sure your delivery goes smoothly, so here are some important details about our service:
- For orders above £120, we offer delivery to most mainland UK addresses. For orders under £120, we can still deliver to Northern Ireland and the outlying isles, as long as the item can be sent by Royal Mail, weighs less than 30kg, and fits within 61cm × 46cm × 46cm. Some highland and remote areas may carry an extra delivery charge as couriers often apply surcharges in these locations. If you live in one of these areas, feel free to contact us before ordering so we can confirm the delivery options and costs for you.
- Most of our products include delivery in the price. If your order is under £90, a small delivery fee will apply but do not worry this will always be clearly shown at checkout before you complete your purchase.
- Depending on what you choose at checkout, your order will usually be delivered either the next working day or within 2 working days. For next day delivery please place your order before 2:00pm. Orders are dispatched Monday to Friday only. Some items may take a little longer and if that is the case we will always show the expected delivery time on the product page.
- If your order includes items with different dispatch times we will normally wait and send everything together once all items are in stock. If one of the items is going to take a while we will give you the choice either wait for everything to arrive or let us send the available items now and deliver the rest later. It is up to you.
- We use trusted delivery partners to make sure your order gets to you safely and on time. We use DPD for next working day deliveries and Royal Mail for the 2 day option.
- As soon as your order is on its way we will send you a tracking number by email. If you provide your mobile number at checkout we will also send delivery updates straight to your phone so you can keep an eye on progress.
- If a product is marked as "Dispatched within 3 working days" delivery usually takes around 3 to 5 working days from when your order is placed.
- For customers in Inverness and other parts of the Scottish Highlands deliveries can take up to 2 working days even if you select next day delivery as couriers do not currently offer a guaranteed next day service to those areas.
