{"product_id":"xlpower-nimbus-550-v2-nitro-xl55nk02","title":"XLPower Nimbus 550 V2 Nitro : XL55NK02","description":"\u003cp\u003e\u003cstrong\u003eXLPower Nimbus 550 V2 Nitro : XL55NK02\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNimbus 550 V2 Nitro — Balanced Power, Refined Precision\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eNimbus 550 V2 Nitro\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis XLPower’s next evolution of its high-performance nitro-powered 550-class helicopter kit. Building on the proven foundation of the original Nimbus 550 Nitro, the V2 refines every critical system for greater smoothness, reliability, and control. It combines the precise control geometry of its electric predecessors with a robust, meticulously balanced nitro drivetrain—delivering responsive power, smooth clutch engagement, and exceptional maintainability for advanced pilots.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eKey Improvements (V2 vs Original)\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003ePre-balanced clutch assembly\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003efor reduced vibration and extended bearing life\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eExtended engine shaft\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003efor improved axial stability and smoother operation\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRe-engineered start coupling\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e— starter cup no longer sits inside the bearing, preventing clutch loosening during operation\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNew tail pitch lever system\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eadopted from the electric V2, offering stronger tail authority and crisper response\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSignificantly lower vibration\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eacross all RPM ranges, with smoother spool-up and more stable hover\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eCore Features\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eRedesigned Upper Swash Plate \u0026amp; Geometry\u003c\/strong\u003e\u003cbr\u003eTo eliminate unequal cyclic\/collective differential, the Nimbus 550 V2 Nitro ships with a new upper swash plate and longer outer swash balls. This refinement ensures balanced servo geometry while maintaining the proven control ratios from the electric Nimbus series.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTapered Clutch System\u003c\/strong\u003e\u003cbr\u003eBorrowed from the Nitro 700 platform, the tapered clutch provides smoother engagement and easier clutch stack alignment, further enhanced in the V2 with pre-balancing for ultra-low vibration.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRigid Airframe Core\u003c\/strong\u003e\u003cbr\u003eA one-piece 7075 aluminum bearing block and servo mount form the structural backbone of the frame, giving outstanding drivetrain rigidity and stability during aggressive maneuvers.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e120° Cyclic Servo Layout\u003c\/strong\u003e\u003cbr\u003eServos are arranged in a 120° layout for optimal geometry, ensuring consistent control feel across the full collective range.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eEase of Maintenance\u003c\/strong\u003e\u003cbr\u003eThe engine can be removed from the bottom of the frame in minutes without dismantling other assemblies. The fan shroud is independently detachable from the side, simplifying maintenance and tuning.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBalanced Gear Ratio\u003c\/strong\u003e\u003cbr\u003eStandard 7.7:1 gear ratio optimized for 550–580 mm blades, offering excellent RPM and torque balance for demanding maneuvers. Optional 8.5:1 ratio upgrade extends capability to 650-class setups.\u003c\/p\u003e\n\u003ch2 class=\"image-with-text__heading inline-richtext h1\"\u003eTECHNICAL SPECIFICATIONS\u003c\/h2\u003e\n\u003cdiv class=\"image-with-text__text rte body\"\u003e\n\u003cp\u003e\u003cstrong\u003eLength w\/o main blades:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e1,148 mm\u003cbr\u003e\u003cstrong\u003eOverall height:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e315 mm\u003cbr\u003e\u003cstrong\u003eFrame width:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e206 mm\u003cbr\u003e\u003cstrong\u003eFrame weight:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e1,500 g\u003cbr\u003e\u003cstrong\u003eMain shaft diameter:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e10 mm\u003cbr\u003e\u003cstrong\u003eFeathering shaft diameter:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e8 mm\u003cbr\u003e\u003cstrong\u003eMain gear:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e170 T\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePinion gear\u003c\/strong\u003e：22T（20T Optional）\u003cbr\u003eMain gear ratio：7.7（8.5 Optional）\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTail ratio:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e4.615 （5 Optional）\u003cbr\u003e\u003cstrong\u003eFuel tank capacity:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e345 cc\u003cbr\u003e\u003cstrong\u003eRecommended blade length:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e550 – 580 mm\u003cbr\u003e\u003cstrong\u003eEngine class:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e.50 – .55 nitro\u003cbr\u003e\u003cstrong\u003ePower system:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eNitro (requires engine, pipe, servos, and gyro)\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2 class=\"image-with-text__heading h1 rte\"\u003eCNC MAIN GEAR ASSEMBLY\u003c\/h2\u003e\n\u003cdiv class=\"image-with-text__text rte body\"\u003e\n\u003cp\u003eWith a 7.7 gear ratio, it is perfectly matched to achieve a good rotor RPM while providing enough torque for demanding maneuvers with 550–580mm blades. Optional parts are available to stretch it to a 650-size with an 8.5 gear ratio.\u003cbr\u003eThe main gear directly drives the head and has been designed to efficiently transmit rotor torque, producing peak power through extreme rigidity.\u003c\/p\u003e\n\u003ch2 class=\"image-with-text__heading h1 rte\"\u003eROTOR HEAD SYSTEM\u003c\/h2\u003e\n\u003cdiv class=\"image-with-text__text rte body\"\u003e\n\u003cp\u003eMachined from high-strength 7075-grade aluminum, the rigid rotor head provides maximum stability and precise control response. Optimized geometry and high-precision linkage deliver perfectly linear cyclic feedback, while the \u003cstrong\u003e1:1 control geometry\u003c\/strong\u003e ensures equal movement in all directions and a consistent, balanced feel — ideal for both aggressive 3D and precise F3C flight.\u003c\/p\u003e\n\u003ch2 class=\"image-with-text__heading h1 rte\"\u003eEASY MAINTENANCE\u003c\/h2\u003e\n\u003cdiv class=\"image-with-text__text rte body\"\u003e\n\u003cp\u003eEngine maintenance is also easy, with the ability to remove the engine from the bottom without disturbing other assemblies in a matter of minutes. The engine cooling fan shroud can be independently removed by side and without disassembly of other parts.\u003c\/p\u003e\n\u003ch2 class=\"image-with-text__heading h1 rte\"\u003eQuick-Connect Canopy Lock System\u003c\/h2\u003e\n\u003cdiv class=\"image-with-text__text rte body\"\u003e\n\u003cp\u003eEasy connect canopy locks removing the need for safety pins with a much easier way to remove and mount the canopy.\u003c\/p\u003e\n\u003cdiv class=\"image-with-text isolate collapse-padding scroll-trigger animate--slide-in\"\u003e\n\u003cdiv class=\"image-with-text__grid grid grid--gapless grid--1-col grid--3-col-tablet\"\u003e\n\u003cdiv class=\"image-with-text__media-item image-with-text__media-item--small image-with-text__media-item--middle grid__item\"\u003e\n\u003ch2 class=\"image-with-text__heading h1 rte\"\u003eTAIL HUB\u003c\/h2\u003e\n\u003cdiv class=\"image-with-text__text rte body\"\u003e\n\u003cp\u003ePrecision CNC-machined from aircraft-grade aluminum for exceptional balance and durability. The \u003cstrong\u003eteetering tail rotor system\u003c\/strong\u003e, shared with the Nimbus 550 V2 electric version, delivers stronger tail-hold performance, reduced vibration, and improved parts compatibility for easier maintenance and upgrades.\u003c\/p\u003e\n\u003cdiv class=\"image-with-text isolate collapse-padding scroll-trigger animate--slide-in\"\u003e\n\u003cdiv class=\"image-with-text__grid grid grid--gapless grid--1-col grid--3-col-tablet image-with-text__grid--reverse\"\u003e\n\u003cdiv class=\"image-with-text__text-item grid__item\"\u003e\n\u003cdiv class=\"image-with-text__content image-with-text__content--middle image-with-text__content--desktop-left image-with-text__content--mobile-left image-with-text__content--medium content-container background-transparent\"\u003e\n\u003cdiv class=\"image-with-text__text rte body\"\u003e\n\u003cp\u003eThe tail hub uses a \u003cstrong\u003etapered collet connection\u003c\/strong\u003e identical to the Specter 700, effectively reducing vibration and simplifying maintenance — in most crash cases, only the tail shaft needs replacement, costing just a few dollars.\u003c\/p\u003e\n\u003ch2 class=\"image-with-text__heading h1 rte\"\u003eGEOMETRY\u003c\/h2\u003e\n\u003cdiv class=\"image-with-text__text rte body\"\u003e\n\u003cp\u003eClean, direct servo placement with optimized linkage geometry delivers mechanical efficiency, equal throw on all axes, and a simplified setup for consistent response throughout the entire flight range. A \u003cstrong\u003eone-piece 7075 aluminum bearing block and servo mount\u003c\/strong\u003e form the structural backbone of the frame, providing exceptional drivetrain rigidity and stability even during the most aggressive maneuvers.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"XLPower","offers":[{"title":"Default Title","offer_id":56201838100865,"sku":"XL55NK02","price":569.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0951\/5047\/3601\/files\/XL55NK01-1_3cfd585f-a2fb-4ce0-bc8e-a241e32e9c41.webp?v=1788194633","url":"https:\/\/helihensonrc.co.uk\/products\/xlpower-nimbus-550-v2-nitro-xl55nk02","provider":"Heli Henson RC","version":"1.0","type":"link"}