{"product_id":"rc-era-c138-pro-main-shaft-set-vertical-main-shaft","title":"RC ERA C138 Pro – Main Shaft Set (Vertical Main Shaft)","description":"\u003ch1\u003eRC ERA C138 Pro — Main Shaft Set (Vertical Main Shaft)\u003c\/h1\u003e\n\u003chr\u003e\n\u003ch2\u003eRestore True Tracking \u0026amp; Smooth Head Speed\u003c\/h2\u003e\n\u003cp\u003eGenuine \u003cstrong\u003eRC ERA C138 Pro main shaft set\u003c\/strong\u003e to replace a bent or worn vertical shaft. A straight main shaft is essential for stable hover, even blade tracking, and quiet power. Ideal after hard landings or gear strikes. \u003cstrong\u003eShips worldwide.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFactory-spec vertical main shaft for precise fit on the C138 Pro\u003c\/li\u003e\n\u003cli\u003eHardened material resists bending and reduces vibration\u003c\/li\u003e\n\u003cli\u003eIncludes collars\/retainers and hardware as shown\u003c\/li\u003e\n\u003cli\u003eDirect swap with standard tools — install in minutes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eWhen to Replace\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eVisible wobble of the rotor head or uneven blade tracking\u003c\/li\u003e\n\u003cli\u003eVibration after a crash; shaft fails the “glass roll” straightness test\u003c\/li\u003e\n\u003cli\u003eMain gear mesh feels inconsistent or noisy\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eDesigned for the \u003cstrong\u003eRC ERA C138 Pro 6CH Brushless Police RC Helicopter\u003c\/strong\u003e only.\u003cbr\u003eFull model page (specs \u0026amp; photos):\u003cbr\u003e\u003ca href=\"https:\/\/www.kidstoylover.com\/products\/rc-era-c138-pro-6ch-brushless-police-rc-helicopter-with-optical-flow-led-lights\"\u003e https:\/\/www.kidstoylover.com\/products\/rc-era-c138-pro-6ch-brushless-police-rc-helicopter-with-optical-flow-led-lights \u003c\/a\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eWhat’s in the Box\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eVertical main shaft (1)\u003c\/li\u003e\n\u003cli\u003eCollars\/retainers \u0026amp; screws (as pictured)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eInstall Tips\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eCheck bearings; replace if rough to maintain perfect alignment\u003c\/li\u003e\n\u003cli\u003eSet collar height so the main gear meshes smoothly with minimal backlash\u003c\/li\u003e\n\u003cli\u003eSpin by hand before powering on to confirm no high spots or rubbing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eSupport \u0026amp; Warranty\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eExpert help to choose the right \u003cstrong\u003eC138 Pro spare parts\u003c\/strong\u003e\n\u003c\/li\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\n\u003chr\u003e\n\u003ch2\u003eOther Related Parts\u003c\/h2\u003e\n\u003cp\u003eNeed gears, blades, feathering shaft, servos, LEDs, or batteries? Browse the full \u003cstrong\u003eC138 Pro spare parts\u003c\/strong\u003e collection:\u003cbr\u003e\u003ca href=\"https:\/\/www.kidstoylover.com\/collections\/rc-era-c138-pro-spare-parts-accessories\"\u003e https:\/\/www.kidstoylover.com\/collections\/rc-era-c138-pro-spare-parts-accessories \u003c\/a\u003e\u003c\/p\u003e\n\u003chr\u003e","brand":"Kidstoylover","offers":[{"title":"Default Title","offer_id":42592538001475,"sku":"RCERAC138ProMSS","price":262.0,"currency_code":"TWD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0549\/8313\/1203\/files\/main-24.png?v=1758718074","url":"https:\/\/www.kidstoylover.com\/ar-tw\/products\/rc-era-c138-pro-main-shaft-set-vertical-main-shaft","provider":"Kidstoylover","version":"1.0","type":"link"}