{"product_id":"mark4-7inch-295mm-carbon-fiber-frame-kit","title":"Mark4 7inch 295mm Carbon Fiber Frame Kit","description":"\u003cmeta name=\"description\" content=\"Buy Mark4 7inch 295mm Carbon Fiber Frame Kit online in India at best price from The Engineer Store, Bengaluru. Authentic product, 7-day warranty on manufacturing defects, fast delivery across India.\"\u003e\n\n\u003ch1\u003eMark4 7inch 295mm Carbon Fiber Frame Kit\u003c\/h1\u003e\n\n\u003cp\u003eThe Mark4 7inch 295mm Carbon Fiber Frame Kit is a professional-grade racing drone frame designed for FPV (First Person View) racing and aerial photography applications. This frame kit is widely used by drone racing enthusiasts, professional FPV pilots, and aerial content creators who demand lightweight construction with superior rigidity and crash resistance. The 295mm wheelbase with carbon fiber composite arms solves the critical engineering challenge of achieving optimal weight-to-strength ratio while maintaining precise flight dynamics and rapid acceleration capabilities required in competitive racing environments.\u003c\/p\u003e\n\n\u003ch2\u003eProduct Overview\u003c\/h2\u003e\n\n\u003cp\u003eThe Mark4 7inch frame utilizes high-modulus carbon fiber layup technology combined with precision CNC manufacturing to deliver a chassis that balances extreme durability with minimal weight penalty. The frame architecture features a unibody design with integrated motor mounting points, ESC placement optimization, and camera mount provisions. The carbon fiber composite construction provides exceptional torsional rigidity, reducing flex during aggressive maneuvers and enabling faster response to pilot input. The 295mm motor-to-motor distance places this frame in the 7-inch class, making it ideal for 6S LiPo battery configurations and delivering the power-to-weight performance demanded by competitive FPV racing circuits.\u003c\/p\u003e\n\n\u003cp\u003eThis frame kit incorporates advanced engineering principles including optimized weight distribution, reinforced arm joints with carbon fiber layering patterns, and precision-drilled mounting holes for industry-standard components. The design accommodates various camera and VTX (Video Transmitter) configurations, allowing pilots to customize their builds for specific racing or freestyle flying requirements. The carbon fiber material exhibits superior impact absorption compared to plastic alternatives, significantly extending frame lifespan even in high-crash environments typical of racing operations.\u003c\/p\u003e\n\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpecification\u003c\/td\u003e\n\u003ctd\u003eDetails\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eFPV Racing Drone Frame Kit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eMark4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrame Size\u003c\/td\u003e\n\u003ctd\u003e7 inch (295mm wheelbase)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eHigh-modulus Carbon Fiber Composite\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003eApproximately 145-155 grams\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMotor Mounting\u003c\/td\u003e\n\u003ctd\u003eM3 precision-drilled holes for standard brushless motors\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery Compatibility\u003c\/td\u003e\n\u003ctd\u003e6S LiPo (22.2V nominal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamera Mount\u003c\/td\u003e\n\u003ctd\u003eIntegrated FPV camera and action camera provisions\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eOriginal\/Authentic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e7 days on manufacturing defects\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShipping\u003c\/td\u003e\n\u003ctd\u003e1-5 days from Bengaluru\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDelivery\u003c\/td\u003e\n\u003ctd\u003e7-8 days across India\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupport\u003c\/td\u003e\n\u003ctd\u003e24\/7 via Email and WhatsApp\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eHigh-modulus carbon fiber construction delivers superior stiffness-to-weight ratio, enabling rapid acceleration and precise control response critical for competitive FPV racing\u003c\/li\u003e\n\u003cli\u003eOptimized 295mm wheelbase geometry provides ideal balance between agility and stability for both racing circuits and freestyle flying applications\u003c\/li\u003e\n\u003cli\u003eReinforced arm joints with multi-directional carbon fiber layering pattern significantly improve crash resistance and extend operational lifespan in high-impact environments\u003c\/li\u003e\n\u003cli\u003ePrecision CNC-machined mounting points ensure perfect alignment of motors, ESCs, and flight controllers for optimal aerodynamic performance and vibration isolation\u003c\/li\u003e\n\u003cli\u003eIntegrated camera and VTX mounting provisions accommodate various FPV and action camera configurations without additional adapters or modifications\u003c\/li\u003e\n\u003cli\u003eLightweight design at 145-155 grams maximizes payload capacity and flight duration while maintaining responsive handling characteristics\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eApplications and Use Cases\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eCompetitive FPV racing on organized racing circuits where frame rigidity and weight optimization directly impact lap times and competitive performance\u003c\/li\u003e\n\u003cli\u003eProfessional aerial cinematography and freestyle flying requiring a robust platform capable of executing complex maneuvers while carrying HD camera systems\u003c\/li\u003e\n\u003cli\u003eFPV drone racing training and skill development for pilots transitioning from smaller frames to 7-inch racing specifications\u003c\/li\u003e\n\u003cli\u003eAutonomous flight research and development where the standardized 295mm form factor integrates with commercial autopilot systems and sensor packages\u003c\/li\u003e\n\u003cli\u003eHobby-grade racing and recreational flying for enthusiasts seeking professional-grade performance without the cost of top-tier racing platforms\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHow to Use\u003c\/h2\u003e\n\n\u003cp\u003eBegin assembly by carefully inspecting all carbon fiber components for manufacturing defects or damage sustained during shipping. Install the four brushless motors into the precision-drilled motor mounts using M3 bolts, ensuring proper alignment and secure fastening. Mount the ESC (Electronic Speed Controller) on the frame arms using vibration-dampening standoffs, routing signal wires to avoid interference with rotating components. Install your flight controller on the central frame plate using foam dampening pads to isolate vibration, then connect the ESC signal wires in the correct motor sequence according to your flight controller firmware specifications.\u003c\/p\u003e\n\n\u003cp\u003eConfigure your FPV camera and VTX (Video Transmitter) using the integrated mounting provisions, ensuring proper cable routing to prevent entanglement with propellers. Install your 6S LiPo battery using a secure XT60 or XT90 connector, positioning the battery for optimal center-of-gravity alignment. Perform a comprehensive pre-flight check including motor direction verification, propeller balance inspection, and flight controller calibration before your first flight. Always conduct initial test flights in open areas away from obstacles to verify frame integrity and flight characteristics before engaging in competitive racing or aggressive freestyle maneuvers.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the maximum recommended thrust capacity for the Mark4 7inch frame?\u003c\/summary\u003e\n\u003cp\u003eThe Mark4 7inch frame is engineered for 6S LiPo configurations with high-KV brushless motors typically ranging from 2300KV to 2700KV. Maximum recommended thrust capacity is approximately 12-15kg depending on motor and propeller selection. For racing applications, a thrust-to-weight ratio of 4:1 to 5:1 is optimal for aggressive acceleration while maintaining flight stability.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eIs the Mark4 7inch frame compatible with 5-inch propellers?\u003c\/summary\u003e\n\u003cp\u003eNo, the Mark4 is specifically designed for 7-inch propellers (approximately 180-200mm diameter). Using 5-inch propellers would result in inefficient power delivery, reduced thrust generation, and poor flight characteristics. The 295mm wheelbase geometry is optimized exclusively for 7-inch propeller dimensions.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eCan I use 4S LiPo batteries with this frame instead of 6S?\u003c\/summary\u003e\n\u003cp\u003eWhile technically possible, 4S LiPo operation is not recommended for the Mark4 7inch frame. The frame is engineered for 6S voltage specifications (22.2V nominal). Using 4S batteries would significantly reduce thrust output, limiting acceleration performance and flight responsiveness. For optimal performance and manufacturer specifications compliance, use 6S LiPo batteries exclusively.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the carbon fiber material grade used in this frame?\u003c\/summary\u003e\n\u003cp\u003eThe Mark4 7inch utilizes high-modulus carbon fiber composite with a 3K weave pattern. The material specifications include a tensile strength of approximately 600+ MPa and modulus of 230+ GPa, providing excellent rigidity while maintaining acceptable impact absorption for racing applications.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eHow durable is the frame in crash scenarios?\u003c\/summary\u003e\n\u003cp\u003eThe reinforced arm joints and multi-directional carbon fiber layering provide excellent crash resistance compared to plastic frames. Most minor crashes result in no damage, while moderate impacts may cause localized delamination or small cracks that can often be repaired with carbon fiber tape or epoxy. Severe impacts may require arm replacement. The frame is designed for high-impact environments and significantly outlasts plastic alternatives in racing conditions.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhen will I receive my order?\u003c\/summary\u003e\n\u003cp\u003eOrders are dispatched within 1-5 business days from our Bengaluru warehouse. Delivery takes 7-8 days to most locations across India.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhat is your return and warranty policy?\u003c\/summary\u003e\n\u003cp\u003eWe offer a 7-day return policy on manufacturing defects only. Contact support within 7 days of receipt for free replacement or full refund. Not applicable for user damage or misuse.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eAre bulk discounts available?\u003c\/summary\u003e\n\u003cp\u003eYes, wholesale pricing for orders of 10 or more units. Contact our sales team via WhatsApp or email for a customized bulk quote.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003ch2\u003eWhy Buy from The Engineer Store\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eGenuine Products: Sourced directly from authorized distributors with authentication\u003c\/li\u003e\n\u003cli\u003eExpert Team: Our technical team validates every product before listing\u003c\/li\u003e\n\u003cli\u003eFast Shipping: Dispatched within 1-5 days from our Bengaluru warehouse\u003c\/li\u003e\n\u003cli\u003ePan-India Delivery: 7-8 days to Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata\u003c\/li\u003e\n\u003cli\u003ePayment Options: COD, UPI, credit\/debit cards, net banking, EMI available\u003c\/li\u003e\n\u003cli\u003eTechnical Support: 24\/7 expert guidance via email and WhatsApp\u003c\/li\u003e\n\u003cli\u003eReturns: 7-day return policy on manufacturing defects only\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eBuy Mark4 7inch 295mm Carbon Fiber Frame Kit Online in India\u003c\/h2\u003e\n\n\u003cp\u003ePurchase the \u003cstrong\u003eMark4 7inch 295mm Carbon Fiber Frame Kit\u003c\/strong\u003e online at \u003ca href=\"https:\/\/theengineerstore.in\"\u003eThe Engineer Store\u003c\/a\u003e, India's trusted source for genuine electronics and drone components. We deliver across Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on \u003cstrong\u003eMark4 7inch 295mm Carbon Fiber Frame Kit\u003c\/strong\u003e with fast shipping and expert support from professional FPV racing specialists.\u003c\/p\u003e\n\n\u003cp\u003eOur team in Bengaluru is available 24\/7 to support your journey from product selection to project completion. Whether you are building your first racing drone or upgrading an existing platform, our technical experts provide comprehensive guidance on component selection, assembly procedures, and flight optimization strategies.\u003c\/p\u003e","brand":"My Store","offers":[{"title":"Default Title","offer_id":44005465850019,"sku":"TES-EVN1742","price":2342.6,"currency_code":"INR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/4479\/7091\/products\/MARK-4-6-INCH12-314x252_64aa7a82-99b7-4011-8977-ceffe4446880.jpg?v=1707827448","url":"https:\/\/www.theengineerstore.in\/zh-hant\/products\/mark4-7inch-295mm-carbon-fiber-frame-kit","provider":"The Engineer Store","version":"1.0","type":"link"}