- Model Number: Z-BLH4105
- Manufacturer: Blade
- Compatible Aircraft: Blade 120 S RC Helicopter
- Component Type: Main Shaft
- Part Category: Essential Rotor System Component
- Recommended Use: Replacement after crash damage or wear, routine maintenance, crash kit assembly
Overview
The BLH Main Shaft for the Blade 120 S is an essential replacement component for pilots and enthusiasts maintaining their RC helicopter in the UK. This genuine Blade spare part is designed specifically for the Blade 120 S model, one of the most popular compact RC helicopters available. Whether you're recovering from a crash, performing routine maintenance, or building a comprehensive crash kit, this main shaft is a critical wear item that ensures your helicopter continues to fly smoothly and reliably. The main shaft is the central rotating component that drives the main rotor system, making it one of the most important parts of your aircraft's drivetrain.
Keeping spare main shafts on hand is a smart investment for any serious RC helicopter enthusiast. The Blade 120 S is renowned for its durability and forgiving flight characteristics, making it an excellent choice for both beginners learning RC helicopter flight and experienced pilots looking for a reliable platform. By maintaining a small "crash kit" that includes main shafts, blades, and gears, you can minimise downtime and get back in the air quickly after any incident. This genuine Blade component ensures perfect compatibility and optimal performance with your aircraft.
At RC Model Shop, we stock a comprehensive range of Blade 120 S spares and upgrades, from essential crash-repair items to performance enhancements. Our dedicated Blade 120 S spares category includes everything from main blades and tail rotors to main gears, feathering spindles, swashplates, motors, batteries, and much more. Whether you need a replacement shaft today or you're planning ahead with spare parts, we're here to support your RC hobby with genuine products, expert advice, and competitive pricing.
Key Features
- Genuine Blade Component — This is an authentic Blade OEM main shaft manufactured to the exact specifications required for the Blade 120 S helicopter, ensuring perfect fit and function without compatibility concerns.
- Essential Spare Part — The main shaft is a critical rotating component that drives your helicopter's main rotor system, making it one of the most commonly replaced wear items during routine maintenance and crash repairs.
- Quick Replacement — Having a spare main shaft readily available means you can quickly restore your aircraft to flying condition following any accident or wear, minimising downtime and maximising your flying season.
- Perfect for Crash Kits — This component is ideal for building a small emergency crash kit alongside main blades and gears, allowing you to perform field repairs and get back to flying immediately.
- Compatible with Blade 120 S — Specifically engineered for the Blade 120 S platform, this main shaft works seamlessly with all other 120 S components including the main rotor head, feathering spindle, and swashplate assembly.
- Professional-Grade Quality — Built to the same standards as the original equipment, this genuine Blade part delivers reliable performance season after season.
Technical Performance
The BLH Main Shaft is precision-engineered to handle the demanding requirements of RC helicopter flight. As the central rotating component of the main rotor drive system, the main shaft must tolerate significant rotational forces and stresses whilst maintaining perfect alignment and balance. This genuine Blade component is manufactured from high-quality materials selected for durability and strength, ensuring it can withstand the rigours of regular flying and the occasional impact associated with RC helicopter operation. The main shaft connects the main motor to the main rotor head through the swashplate assembly, making it fundamental to your aircraft's ability to generate lift and maintain stable flight. Replacement becomes necessary when the shaft becomes bent or damaged through crashes, or when normal wear from extended flying seasons compromises its integrity. For the Blade 120 S platform specifically, this main shaft integrates seamlessly with the 120 S main motor, main rotor hub, feathering spindle, and associated linkage components to create a cohesive and reliable rotor system. The engineering tolerances are critical to ensure smooth rotation with minimal vibration, which directly impacts flight stability and control response.
What's in the Box
- BLH Main Shaft for Blade 120 S
What You Need to Complete
- Blade 120 S helicopter (if not already owned)
- Basic tools for disassembly and reassembly (small hex keys, screwdrivers)
- Replacement hardware may be required depending on the condition of existing components
Frequently Asked Questions
- Why would I need to replace the main shaft on my Blade 120 S? — The main shaft is a critical rotating component that can become bent or damaged through crashes, or it may experience normal wear after extended flying. Replacement is necessary to restore smooth operation and ensure safe flight. A bent shaft will cause vibration and control problems that compromise flight stability.
- Is the BLH Main Shaft suitable for beginners? — Yes, this is a straightforward replacement part that any RC helicopter pilot should consider having as a spare. Beginners especially benefit from keeping crash-kit components on hand, as learning to fly involves the occasional mishap. The genuine Blade part ensures perfect compatibility.
- How often should I replace the main shaft? — Under normal flying conditions, the main shaft should last for many flight hours. However, any significant crash or impact may require immediate replacement. We recommend keeping a spare available so you're never grounded by a damaged shaft.
- What is the difference between this and shafts for other Blade models? — The BLH4105 main shaft is specifically engineered for the Blade 120 S helicopter. Other Blade models like the 120 SR or 130X use different shaft components with different part numbers. Always verify you're ordering the correct part number for your specific model to ensure compatibility.
- How do I know if my main shaft is damaged? — Signs of main shaft damage include excessive vibration during flight, difficulty maintaining stable hover, unusual sounds from the rotor head, or visible bending when you inspect the shaft directly. If you suspect damage, it's best to replace it before flying again to avoid further complications.
- Can I use shafts from other manufacturers? — We recommend using genuine Blade components to ensure perfect fit, alignment, and reliability. Aftermarket or non-OEM shafts may have slightly different tolerances that could affect flight performance or component compatibility.
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 BLH Main Shaft: 120 S Z-BLH4105 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.
