{"product_id":"rc-era-c129-v2-main-shaft-set-spare-part-for-4ch-rc-helicopter","title":"RC ERA C129 V2 Main Shaft Set Spare Part for 4CH RC Helicopter","description":"\u003ch1\u003eRC ERA C129 V2 Main Shaft Set Spare Part for 4CH RC Helicopter\u003c\/h1\u003e\n\u003chr\u003e\n\u003ch2\u003eEliminate Rotor Wobble, Restore Smooth Hovering, and Repair Crash Bends\u003c\/h2\u003e\n\u003cp\u003eA bent or worn main rotor shaft on your RC ERA C129 V2 4CH RC Helicopter is the leading cause of severe head tracking issues, erratic vibrations, and loss of altitude hold precision. Even a microscopic bend from a minor blade strike or carpet crash causes the 6-axis gyro to overcorrect, resulting in aggressive tail shakes, uneven blade pitch balance, and premature main gear wear. Trying to manually straighten a bent steel shaft never fully restores factory straightness. This official replacement \u003cb\u003eRC ERA C129 V2 Main Shaft Set\u003c\/b\u003e completely resolves rotor vibration and flight instability. Precision-machined to exact factory tolerances, it restores silky-smooth rotation, eliminates head wobble, and ensures your helicopter maintains rock-solid altitude hold and 3D flip responsiveness.  \u003cstrong\u003eShips worldwide.\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eProduct Highlights\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eHigh-Strength Precision Steel:\u003c\/b\u003e Machined from durable, hardened steel alloy to resist bending and withstand heavy rotor impacts during emergency landings.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eFactory Alignment Mounting Hole Matrix:\u003c\/b\u003e Features pre-drilled, exact-fit retaining pin holes and collar grooves for effortless alignment with the main gear and rotor hub.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eVibration-Free Concentric Balance:\u003c\/b\u003e Perfectly straight design eliminates high-speed rotor head wobble, protecting sensitive 6-axis gyro sensors and micro servos from strain.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eDirect Drop-In Factory Replacement:\u003c\/b\u003e Engineered specifically for the RC ERA C129 V2 main rotor housing for smooth, slop-free installation without slop or modification.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eFor the \u003cstrong\u003eRC ERA C129 V2 4CH RC Helicopter\u003c\/strong\u003e only.\u003cbr\u003eFull model page (specs \u0026amp; photos):\u003cbr\u003e\u003ca href=\"https:\/\/www.kidstoylover.com\/products\/rc-era-c129-v2-4ch-brushless-rc-helicopter-with-altitude-hold-3d-flip-mode?utm_source=copyToPasteBoard\u0026amp;utm_medium=product-links\u0026amp;utm_content=web\"\u003e\u003cspan\u003ehttps:\/\/www.kidstoylover.com\/products\/rc-era-c129-v2-4ch-brushless-rc-helicopter\u003c\/span\u003e\u003c\/a\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1 * RC ERA C129 V2 Main Shaft Set\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eInstall Tips\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eDisassembling Upper Rotor Head Assembly:\u003c\/b\u003e Remove the main rotor blades and unscrew the linkage pushrods attached to the rotor swashplate and rotor hub clips.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eRemoving Old Main Shaft:\u003c\/b\u003e Unscrew the lower retaining pin\/screw securing the main drive gear to the bottom of the bent shaft, then slide the old shaft upward out of the main frame bearings.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eInserting the Replacement Shaft:\u003c\/b\u003e Slide the new steel main shaft downward through the upper and lower fuselage bearings, ensuring smooth rotation without lateral play.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eReattaching Main Gear and Linkages:\u003c\/b\u003e Align the shaft's lower mounting hole with the main gear hub, insert the locking screw tightly, and reconnect all swashplate control linkages before performing a low-RPM test spin.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eSupport \u0026amp; Warranty\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e3-month warranty\u003c\/strong\u003e on manufacturing defects\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eShips worldwide\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Kidstoylover","offers":[{"title":"Default Title","offer_id":43633845796931,"sku":null,"price":417.0,"currency_code":"TWD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0549\/8313\/1203\/files\/11111per.jpg?v=1785916803","url":"https:\/\/www.kidstoylover.com\/zh-tw\/products\/rc-era-c129-v2-main-shaft-set-spare-part-for-4ch-rc-helicopter","provider":"Kidstoylover","version":"1.0","type":"link"}