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AOS 3.5 EVO

Built to go toe to toe with 5" Freestyle quads. Smooth, responsive, and able to carry an Insta360 Go (or similar) and still come in under 250g.

Key Features

Camera Protection

The AOS 3.5 uses 2mm Carbon Plates to hold and protect the camera. These are stiffer, lighter and cheaper to replace than aluminum or titanium.

The camera plates include 2 standoffs to maximise durability and a cutout pattern that supports DJI O3 and all typical19-20mm FPV cameras.

Camera Protection

Top and bottom plates

The 2mm thick main plate supports a central full-sized 25.5 or 20mm stack. Alternatively you can run two 25.5 or 20mm stacks, one in the front and one in the rear. The M2 20mm holes are designed to be easily drilled out to M3 if required.

The cut outs in the top and bottom plate of the AOS 3.5 are optimized to preserve as much of the bending and torsional stiffness of the plate as possible whilst minimizing weight.

Top and bottom plates

Arms

The AOS 3.5 uses a topology optimized truss design for the arms. This truss design provides enormous torsional stiffness, resolving a key source of vibration in traditional frames. It also allows two particularly harmful resonant modes to be individually modified to separate them in frequency.

Truss structures are inherently very strong as they convert bending loads into compression and tension in the individual members. Carbon is much stronger in pure tension and compression than in bending. The 3 screw motor mounting reduces weight and removes the motor hole that can be a stress riser for compressive failure in hard crashes.

Y-shaped motor protectors minimize the risk of damage to those expensive components. Should you ever need to replace an arm, there are only two screws to undo and neither are shared with your electronics.

Arms

Go Pro Mount

The AOS 3.5 has 32x32 mm M2 mounting holes for 3D printed mounts for your HD camera.

Go Pro Mount

Technical Specs

  • Approx. 50g with all hardware

  • Designed for up to 3.5 inch props

  • 160mm wheelbase

  • 4 mm Arms

  • One 25.5x25.5 or 20x20 mm stack in the front and one 25.5x25.5 or 20x20 mm stack in the rear OR

  • One 25.5x25.5, or 20x20 mm stack in the centre

  • Fits the Caddx Vista, WS Avatar or DJI O3 Air Unit perfectly

  • Fits both 20mm (DJI camera) and 19mm (Micro sized) cameras

  • Motor mounting 9x9 up to 12x12 (1404, 1504, 1505 recommended)

  • Standoffs, carbon and hardware included

Where to Buy

Build Resources

Tuning Guides

Betaflight 4.5 PID Tuning

Betaflight 4.4 Tuning Guide

Betaflight 4.5 Filter Tuning

AOS Betaflight Presets

3D Prints

AOS XT30 Mount

AOS XT30 Mount

M2 VTX Antenna Mount

VTX Antenna Mount M2

AOS XT60 Mount

AOS XT60 Mount

AOS EVO/V5 Camera Mounts

AOS EVO/V5 Camera Mounts

M2 SMA VTX Antenna Mount

M2 SMA VTX Antenna Mount

AOS 3.5 Arm Bumper

AOS 3.5 Arm Bumper

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