Overview
The PRB Motor Coupler is an essential replacement part for the Pro Boat Miss GEICO Zelos 36 Twin Brushless Catamaran, designed to connect your brushless motor to the flexible drive shaft system. This precision-engineered coupling component is manufactured by Pro Boat and plays a crucial role in transferring power from your motor to the propulsion system of your high-performance RC catamaran. Whether you're maintaining your existing Miss GEICO Zelos 36 or building a replacement motor assembly, this motor coupler ensures reliable power transmission and smooth operation on the water. If you own a brushless RC boat in the UK or are looking to repair and refresh your catamaran, genuine Pro Boat spares like this coupler are essential for keeping your model at peak performance.
RC boat enthusiasts know that even small components like motor couplers play a vital role in overall reliability and performance. The PRB Motor Coupler with its specific 5mm motor shaft interface and 4.7mm flexshaft connection is precisely engineered to match the mechanical requirements of the Zelos 36 Twin catamaran's drivetrain. This ensures a secure, vibration-free connection that minimises wear on both the motor and the flexshaft. Using genuine Pro Boat parts rather than generic alternatives means you're getting components that have been tested and proven compatible with your specific model, giving you confidence in your repairs and upgrades.
For UK RC boat owners who take their hobby seriously, maintaining authentic component compatibility is important for safety, performance and longevity. The PRB286020 motor coupler is a relatively small but important part that experienced modellers keep as a spare, ready for quick replacement if needed. With stock available through authorised UK retailers, ordering this genuine part ensures you can get back on the water quickly without compromise.
Key Features
- 5mm Motor Shaft Interface — The coupler features a 5mm bore designed to fit directly onto your brushless motor's output shaft, providing a secure and concentric connection that ensures proper alignment and reduces vibration during operation.
- 4.7mm Flexshaft Connection — The opposing end has a 4.7mm bore that connects to the Pro Boat Miss GEICO Zelos 36's flexible drive shaft, allowing smooth power transfer from the motor to the propellers whilst accommodating minor misalignments inherent in marine installations.
- Genuine Pro Boat Manufacturing — This is an authentic Pro Boat spare part, engineered to exact specifications and manufactured to the same quality standards as your original equipment, ensuring compatibility and reliability.
- Essential Drivetrain Component — The motor coupler is a critical element in your catamaran's drivetrain that connects two rotating shafts of different diameters, making it a wear item that may require replacement during the life of your model.
- Quick Replacement Service — Keeping a spare motor coupler on hand allows rapid repair and maintenance of your RC catamaran, minimising downtime when you're ready to get back on the water.
Technical Performance
The PRB Motor Coupler is engineered with precision tolerances to ensure concentricity and smooth power transmission within the Miss GEICO Zelos 36 Twin's brushless motor system. As a direct-drive coupling component, it must accommodate the full torque output of your 3674 4-pole brushless marine motor whilst maintaining mechanical balance at high RPM. The 5mm motor interface connects to brushless marine motors commonly used in high-performance RC catamarans, whilst the 4.7mm flexshaft bore matches the standard drive shaft diameter specified for the Zelos 36 platform. This coupling allows the motor to drive the propulsion system effectively, with the flexible drive shaft absorbing minor vibrations and shaft misalignment that would otherwise cause wear and noise. Quality construction ensures the coupler withstands repeated thermal cycling from water cooling and motor heating, maintaining dimensional stability over many hours of operation. For UK RC boat enthusiasts operating in British waterways, reliable motor couplings are essential for consistent performance in varied water conditions and temperatures.
What's in the Box
- 1x PRB Motor Coupler with 5mm motor shaft bore and 4.7mm flexshaft bore
What You Need to Complete
- Pro Boat Miss GEICO Zelos 36 Twin Brushless Catamaran or compatible model with matching motor and flexshaft specifications
- 3674 4-pole brushless marine motor (1900Kv recommended)
- Brushless marine ESC rated for 2-6S LiPo operation
- Appropriate LiPo battery pack (3S to 6S compatible)
- Spektrum DSMR radio system or compatible receiver
- Servo, propellers and other drivetrain components
Frequently Asked Questions
- What is a motor coupler and why do I need one for my RC catamaran? — A motor coupler is a mechanical coupling that connects two shafts of different diameters, in this case linking your brushless motor's 5mm output shaft to the 4.7mm flexible drive shaft. It's essential for transmitting motor power to the propulsion system. Over time, couplers can wear, crack or slip, making them common replacement items in RC boat maintenance.
- Is the PRB286020 compatible with the Miss GEICO Zelos 36? — Yes, this motor coupler is specifically designed for the Pro Boat Miss GEICO Zelos 36 Twin Brushless Catamaran. It features the exact 5mm motor bore and 4.7mm flexshaft bore required by this model, ensuring perfect fit and compatibility with your drivetrain.
- What brushless motor does the Zelos 36 use? — The Miss GEICO Zelos 36 is compatible with the Dynamite 3674 4-pole brushless marine motor rated at 1900Kv, which connects directly to this PRB286020 coupler through its 5mm bore.
- How often should I replace my motor coupler? — Motor couplers are wear items and their lifespan depends on usage intensity, water conditions and maintenance. Many experienced RC boat modellers keep a spare on hand for quick replacement if the original becomes damaged or worn. Regular inspection during maintenance helps identify when replacement is needed.
- Can I use a generic motor coupler instead of the genuine Pro Boat part? — Whilst generic couplers might superficially fit, using genuine Pro Boat parts ensures exact specification matching, proper bearing surfaces and compatibility testing. Authentic spares prevent potential drivetrain issues that could damage your expensive brushless motor or ESC.
- Where can I buy the PRB286020 motor coupler in the UK? — This genuine Pro Boat spare is available through authorised UK RC retailers. RC Model Shop stocks this component with supplier stock expected to arrive regularly, allowing you to order online for convenient delivery.
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 PRB Motor Coupler: 5mm (Motor)/4.7mm (Flexshaft) Z-PRB286020 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.
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.
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- 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.
