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Featherlight 5" FPV Frame by FalconMultirotors


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Vitals

Wheelbase 205mm
Prop size 5"
Weight 57g
Arm Dimensions 5mm thick, 9.25mm wide
Stack height 15mm or 20mm

 

Buy with the right hardware in mind.

Featherlight is engineered to be as light as possible, and that means choosing specific components.

Flight Controller

Featherlight supports both 20mm and 30.5mm FCs, but 20mm is preferred for protection. There are 3 ways to mount your flight controller:

  • 20mm from the bottom: 14mm screw -> bottom plate -> arm -> x plate -> threaded insert -> 8mm standoff -> FC <- 5mm screw
  • 20mm from the top: 5mm screw -> top plate -> 8mm standoff -> FC <- 5mm screw
  • 30.5mm structural: 14mm screw -> bottom plate -> arm —> x plate -> 10mm standoff, 16mm -> top plate -> 8mm standoff -> FC -> 10mm standoff

Additionally, 20mm stacks can be built with 2 layers to support FC + 4in1 configurations, though you'll need your own hardware to do so.

ESCs

Small ESCs, such as Spedix ES20, can easily be mounted on the arms with little overhang. We suggest using VHB between the ESC and the arm, then adding heatshrink to secure the ESC to the arms (leaving the motor pads accessible in case you need to swap motors).

Motors

As with batteries, lighter motors rule on this frame. We suggest a motor weight of less than 25g.

Featherlight 5 has 16x16mm spaced M3 mounting holes for motors, so all standard motors will fit, but we suggest motors that have all 4 screws at 16x16mm, such as RDQ Naked Bottom 2205s.

Batteries

It's very important to run a light pack with this frame. Though the arms are thicker and wider than heavier competitors, an extra 50g from a heavier pack will result in more arm breakage.

We suggest you stick to 1300mAh 4S packs for this build, and trust you'll find the efficiency of a light, aerodynamic frame results in more flight time than you'd otherwise expect.

Camera

Featherlight was designed around the RunCam Micro camera, and the Foxeer Micro fits as well.

VTX

Tiny VTXs fair best in Featherlight, VTX03, TX200u and other U.FL-equipped VTXs are preferred. Don't bother with SMA-equipped VTXs, the additional 15g is unnecessary, and circular polarized U.FL antennas are readily available.

 

Each kit comes with five arms to keep you in the air.

If you crash like us, you're eventually going to break an arm. We know it can be brutal to be left unable to get back into the air, and that's why we ship 5 arms with every kit.

When it comes time to swap an arm in between heats, the pressnuts in the mid-plate make it easy with only two screws to remove, and the included FC mounting hardware makes it so your stack won't be perturbed in the process.


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