This Iris F154 frame is specifically designed for lightweight, quite and agile 3.5″ and 3″ toothpick builds. Fits 25.4mm x 25.4mm mounting pattern AIO board, 9mm x 9mm mounting pattern motors. It only weighs 18.6g, with four arms+ two plates and hardware. The separated arms design makes it easy and cheap to maintain. Dedicated room is reserved for you to tuck the battery strap through the frame, so your build looks much cleaner. Carefully crafted DJI O3 air unit mount makes the air unit fit perfectly on this X configuration frame.

With versatile mounting options that accommodate both analog cameras and DJI O3/ DJI O4 air units, the TuneRC 3.5" Frame allows you to tailor your FPV setup to your exact specifications. Its dedicated space for battery straps also ensures a neat and balanced build, so you won't need to compromise on your drone's design.

How to Assemble the TuneRC 3.5" Carbon Fiber Frame (Separate Arms) - Guides - DroneTrest  

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Key Features:

• Ultra-Lightweight: Main frame weighs a mere 15g, maximizing flight efficiency
• Separate Arm Design: Enables simple, cost-effective maintenance and repairs
• Camera Flexibility: Compatible with both analog cameras and DJI O3 air unit
• Battery-Friendly: Dedicated space for battery strap for a cleaner build
• Chamfered Arms: Enhanced durability with well-finished, 3mm thick arms

Technical Specifications:

• Diagonal Length: 154mm
• Arm Thickness: 3mm
• Middle Plate Thickness: 1.5mm
• AIO Mounting Pattern: 25.4mm x 25.4mm
• Motor Mounting Pattern: 9mm x 9mm

What's in the Box:

• 4 x Frame Arms
• 1 x Top Plate
• 1 x Bottom Plate
• 1 x Battery Strap (supports 3S 450mAh battery)
• Hardware:
  • 4 x M2 x 8 socket head cap screws
  • 4 x M2 x 18 socket head cap screws
  • 8 x M2 nuts

Note: Accessories may vary depending on supply availability.

Recommended Build Components:

• Motors: TuneRC 1104 3600KV
• Flight Controller: Poly F405 2S-4S AIO
• Propellers: HQ 3.5 x 2.5 x 3
• Video Transmitter: Compatible with both analog or DJI O3/ DJI O4 air unit
• Battery: 3S 450mAh - 4S 450mAh

Additional Options:

• DJI O3/ O4 Air Unit Mount (sold separately)
• Analog Camera Canopy (sold separately)
• Spare Frame Arms and Middle Plates available
• DJI O4 Screw Bag

Assembly Tip: Use a medium-strength threadlocker on screws to prevent loosening during flight sessions.

Whether you're new to the FPV game or a seasoned pilot, the TuneRC 3.5" Carbon Fiber Frame offers a high-quality, versatile option for building a 3.5" toothpick drone with remarkable durability and performance. Ideal for those who need a quiet yet agile flying experience.