- Brand: Blade
- Model Number: BLH-1666
- Product Type: Auto Rotation Hub Assembly
- Vehicle Compatibility: Blade Fusion 700 Helicopter
- Assembly Components: Auto Rotation Hub, Auto Rotation Hub Cap, Auto Rotation Sleeve, Sprague Clutch, Ball Bearings, Bolts
- Ball Bearing Size: 20x25x4mm
- Ball Bearings Quantity: 2
- Fastener Type: M3x16mm Bolts
- Fastener Quantity: 5
- Sprague Clutch: Included
- Hub Cap: Included
- Hub Sleeve: Included
- Barcode: 0660132981471
- Fitment Type: Standard Part
Overview
The Blade BLH-1666 Auto Rotation Hub Assembly is a premium replacement set specifically designed for the Blade Fusion 700 helicopter. This comprehensive spare parts kit brings together all the essential autorotation components and hardware in one convenient package, making it the ideal solution for RC helicopter enthusiasts in the UK who need to maintain or upgrade their Fusion 700. Whether you are performing routine maintenance on your brushless RC helicopter or replacing worn components after extensive flight time, this factory-supplied assembly ensures your autorotation system functions reliably and safely.
As an authorised Blade dealer, RC Model Shop stocks genuine Blade spare parts for the Fusion 700, one of the most popular electric RC helicopters available to hobbyists across the UK. The BLH-1666 is designed specifically to keep your aircraft in peak condition, offering professional-grade components that match the original specification of your helicopter. This is a replacement assembly that brings together multiple critical parts that would otherwise need to be purchased separately, saving you time and money while ensuring component compatibility.
The auto rotation hub assembly is an essential component in any RC helicopter, particularly important for safe emergency descent procedures. By replacing the entire hub assembly in one go, you eliminate the risk of mixing old and new components that may not work optimally together, and you ensure that every part meets the exacting standards demanded by Blade's engineering team.
Key Features
- Complete Assembly Kit — This package includes the auto rotation hub, hub cap, sleeve, Sprague clutch, matched bearings and all necessary fixings in one box, eliminating the need to source multiple components separately and ensuring perfect compatibility across your Fusion 700's autorotation system.
- Genuine Blade Components — Every part in this assembly is manufactured by Blade and meets the exact specifications required for safe and reliable operation of your Fusion 700 helicopter, giving you complete confidence in the quality and durability of your investment.
- Sprague Clutch Technology — The included Sprague clutch is a one-way bearing mechanism that allows the main rotor to continue spinning freely during autorotation, a critical safety feature that enables the helicopter to descend safely in the event of motor failure.
- Matched Ball Bearings — Two 20x25x4mm ball bearings are included, precisely matched to work together as a pair, ensuring smooth rotation and minimising friction within the hub assembly for optimal performance and longevity.
- Stainless Steel Fixings — The five M3x16mm bolts supplied are designed to securely fasten the hub assembly, providing reliable mechanical strength that will withstand the rigours of regular helicopter operation and maintenance.
- Replacement-Ready Design — This assembly is packaged as a drop-in replacement for the Fusion 700, meaning experienced RC helicopter pilots can swap out the old assembly and install the new one without requiring additional components or modifications.
Technical Performance
The Blade BLH-1666 Auto Rotation Hub Assembly represents precision engineering at its finest. The assembly is constructed using high-quality materials proven through thousands of hours of real-world testing by RC helicopter pilots worldwide. The two 20x25x4mm ball bearings are the largest physical components in the kit and are responsible for supporting and allowing smooth rotation of the hub assembly. These bearings are manufactured to tight tolerances, ensuring minimal radial and axial play whilst maintaining the low friction characteristics essential for responsive helicopter control. The Sprague clutch is a sophisticate mechanical device that permits one-directional rotation; during normal powered flight, the motor drives the rotor through the clutch, but during autorotation (when the motor is unpowered), the rotor can continue spinning independently, allowing the helicopter to descend safely. The auto rotation hub itself is precision-machined to exacting standards, and the hub cap provides structural integrity whilst the sleeve serves as a bushing or spacer element within the assembly. All components work together as an integrated system, which is why Blade has engineered this as a matched assembly rather than individual parts. The stainless steel M3x16mm bolts provide robust fastening without risk of corrosion, important for maintaining structural integrity during storage between flights and ensuring that the assembly remains securely attached during all phases of flight.
What's in the Box
- 1x Auto Rotation Hub
- 1x Auto Rotation Hub Cap
- 5x M3x16mm Bolts
- 1x Auto Rotation Sleeve
- 1x Sprague Clutch
- 2x 20x25x4mm Ball Bearings
Frequently Asked Questions
- What is an auto rotation hub and why does my Blade Fusion 700 need one? — The auto rotation hub is a critical safety component in electric RC helicopters that allows the rotor blades to continue spinning freely even when the motor is not powered, enabling the aircraft to descend safely in a controlled manner if motor power is lost. This is an essential safety feature and the hub will experience wear over time as you fly your helicopter, making replacement necessary to maintain safe operation.
- How often should I replace the auto rotation hub assembly? — Replacement frequency depends on your flying habits and the number of autorotation events your helicopter experiences. However, this assembly is commonly replaced during routine maintenance intervals or whenever you notice degradation in autorotation performance. The fact that all components are supplied together makes this an efficient maintenance task.
- Is this assembly difficult to install on my Fusion 700? — The BLH-1666 is designed as a drop-in replacement for the Fusion 700, and experienced RC helicopter builders and pilots should be able to install it by removing the five M3x16mm bolts from the old assembly and installing the new one. If you are new to RC helicopter maintenance, we recommend consulting your Fusion 700 manual or contacting our knowledgeable team at RC Model Shop for guidance.
- Why is it better to replace the whole assembly rather than individual bearings? — By replacing the entire auto rotation hub assembly as a matched set, you ensure that all components are perfectly calibrated to work together. The bearings are precisely matched pairs, the Sprague clutch is optimised for the hub and cap, and the sleeve is sized correctly for all these components. Mixing old and new parts can result in poor autorotation performance and potential safety issues.
- What is the difference between the BLH-1666 and other bearing or hub assemblies? — The BLH-1666 is the factory-specified auto rotation hub assembly for the Blade Fusion 700, engineered and tested specifically for this helicopter model. It is not a generic bearing kit but a complete, integrated assembly designed to exacting specifications by Blade's engineering team.
- Are these genuine Blade parts? — Yes, the BLH-1666 is manufactured by Blade and supplied by authorised retailers like RC Model Shop. Genuine Blade parts ensure compatibility, reliability and safety, particularly important for critical components like the auto rotation hub.
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 Blade BLH-1666 Auto Rotation Hub Assembly 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.
- 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.
