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

[unmannedtech1]

If you’re ready to build your TuneRC 3.5” toothpick-style FPV drone, follow these step-by-step instructions to assemble the carbon fiber frame. Gather your tools and let’s get started!

Essential Skills & Qualities Needed:

• Building skills (or at least the will to learn as you go)
• Patience (especially for those tiny screws)
• A steady hand (or the ability to blame shaky hands on too much coffee)
• The magical ability to not lose screws in the carpet (seriously, those things vanish like they’re teleporting)

Step 1: Base Frame Assembly

1. Begin by attaching the central base plate to one of the main arms using an M2 x 8 socket head cap screw. Place the screw through the mounting hole in the arm and secure it through the base plate.
2. Repeat this process for all four arms, making sure they are oriented correctly to form the complete base.

Step 2: Stacking the Frame Layers

1. Next, stack the upper plate on top of the base assembly. Align the screw holes and use M2 x 18 socket head cap screws to secure the layers together.
2. Make sure the screws are tightened evenly so that all layers remain flush without any gaps.

Step 3: Install the Standoffs

1. Use an M2 x 6 standoff to connect the middle and top frame plates at the designated holes.
2. Secure the standoff in place using an M2 nut.

Step 4: Mounting the Arms

1. Attach each arm to the main assembly using an M2 x 15 socket head cap screw. Be sure to insert the screws through the arm mounting holes and secure them with the corresponding nuts.
2. Tighten all the nuts and screws firmly but not excessively, to avoid damaging the frame or stripping the screws.

Step 5: Installing the O3 Air Unit Mount

1. Slide the antenna wires through the 3D-printed antenna holder. This holder is designed to keep the antenna in place without having to disassemble the DJI O3 air unit.
2. Slide the 3D-printed antenna holder forward and position it in the middle of the antenna.
3. Mount the O3 air unit to the frame using the provided M1.6 x 8 pan head screws. Note: You will need to remove the original M1.6 x 6 screws from the DJI O3 air unit first.
4. Repeat the same process for the other side.

Step 6: Installing the O3 Camera Cage and Mount

1. Use the original screws from the DJI O3 camera to attach the camera to the 3D-printed camera cage, as shown in the diagrams.

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3. Repeat this step for both sides of the camera to ensure it is securely mounted.

4. Once the camera is attached to the cage, position the camera mount onto the frame using M2 x 8 socket head cap screws.

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6. Secure the camera mount in place with M2 self-locking nuts to prevent any movement during flight.

7. Position the O3 air unit assembly over the mounted camera cage and use the original M1.6 x 6 screws to secure it in place.

   
   
   
   

8. Repeat this step for the opposite side to ensure stability.

Step 7: Final Check

1. Before installing the rest of your electronics, inspect the entire frame to ensure that all components are tightened properly and aligned. The arms should be perpendicular to the frame center, and there should be no visible gaps between the frame layers.

Congratulations, your TuneRC 3.5" Toothpick frame is now fully assembled and ready for electronics installation. Feel free to share your builds or ask any questions in our forum!

Pro Tips:

• Apply a small dab of thread locker to each screw to prevent vibrations from loosening them mid-flight.
• Solder the motors and receiver before attaching the O3 camera cage
• If you’re new to building, take your time. It’s better to double-check everything now rather than troubleshoot in the field.
• Keep a magnet handy for when those tiny screws inevitably try to escape.

Happy flying, and may your skies be crash-free!