HappyModel BNF Crux3 3" Quad - Choose Your RX

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The DSMX version is not currently not compatible with Spektrum DXE and DX6E radio transmitter. HappyModel is working on fixing this with the next release of BetaFlight.

A zippy 3" toothpick BNF, perfect for any size outdoor space. Includes a TPU mount for your insta360 go and operates on a variety of 2S Lipo batteries

Check out the HappyModel Crux3 Quad and Accessories Collection.

Be sure to check out all our pre-built quads, and all our Happymodel products


  • Wheelbase: 115mm
  • Size: 97x97x35mm (without propellers)
  • Weight: 41g (without battery)
  • Recommend Lipo Battery: 2s 350mah/400mah/450mah/520mah Battery ( NOT Included)

EX1202.5 6400KV Motor

  • Configuration :9N12P
  • Stator Diamter: 12mm
  • Stator Length: 2.5mm
  • Shaft Diameter: Φ1.5mm
  • Motor Dimension(Dia.*Len): Φ14*14.5mm
  • Weight: 4.4g
  • No.of Cells(Lipo): 1-2S

Gemfan 3018 2-Blade Propeller

  • Center Thickness: 5.5mm
  • Prop Diameter: 76.5mm
  • Center Hole diameter: 1.5mm

CrazybeeX FR V2.2 F4 Flight Controller

  • MCU: STM32F411CEU6 (100MHZ, 512K FLASH)
  • Sensor: MPU6000 (SPI connection)
  • Board Size: 28.5x28.5mm
  • Power Supply: 1-2S battery input (DC 2.9V-8.7V)
  • Built-in 5A(each) Blheli_S 4in1 ESC Dshot600 ready
  • Built-in Betaflight OSD(SPI Control)
  • Built-in 5.8G VTX
  • Built-in SPI Frsky/Flysky receiver or no receiver
  • Built-in 5V 1A BEC
  • (Frsky SPI RX Version) CRAZYBEEX FR V2.2 FC Firmware target: CrazybeeF4FR
  • (Flysky SPI RX Version) CRAZYBEEX FS V2.2 FC Firmware target: CrazybeeF4FS
  • (DSM2/X SPI RX Version)CRAZYBEEX DXS V1.0 FC firmware target: CrazybeeF4DXS
  • (External Frsky RXSR Version) CRAZYBEEX PNP V2.2 Firmware target: CrazybeeF4DX
  • (External TBS CRSF NANO Version) CRAZYBEEX PNP V2.2 Firmware target: CrazybeeF4DX
  • Onboard 5A BL_S 4in1 ESC
  • MCU upgraded to EFM8BB21
  • Power supply: 1S LiPo/LiPo HV
  • Current: 5A continuous peak 6A (3 seconds)
  • Support BLHeliSuite programmable
  • Factory firmware: S_H_50_REV16_7.HEX
  • Default protocol: DSHOT600
Onboard Frsky SPI D8 Receiver Version (Optional)
  • SPI BUS receiver Frsky D8 compatible
  • Compatible Non EU transmitter D8 model
  • Channels: 8ch
  • Failsafe support
  • No ground interference ( Transmitter and receiver 1 m from the ground): 200m~300m


Onboard Flysky SPI receiver Version (Optional)

  • Protocol: AFHDS and AFHDS-2A Switchable
  • Channels: 8ch(AFHDS) or 14ch(AFHDS-2A)
  • No ground interference ( Transmitter and receiver 1 m from the ground): 200~300m
  • Failsafe support

Onboard DSM2/X SPI receiver Version (Optional)

  • SPI BUS receiver DSM2/DSMX compatible
  • Channels: Max 12ch
  • Failsafe support
  • No ground interference ( Transmitter and receiver 1 m from the ground): 200m~300m
  • RSSI enable (show on the goggles)

External Frsky R-XSR receiver version (Optional)

  • Weight: 1.5g
  • Number of channels: 16CH (1-16CH from SBUS channel, 1~8CH from CPPM channel)
  • Operating Voltage Range: 3.5V~10V
  • Operating Current:70mA@5V
  • Firmware Upgradable
  • Compatibility: FrSky X Series modules and radios in D16 mode
  • Could support Frsky New ACCESS Protocol ( Upgrade firmware)

External TBS CRSF Nano receiver version (Optional)

  • Original TBS CROSSFIRE Receiver ,CRSF Protocol , Official TBS transmitter compatible
Onboard 5.8G 40CH 25/200mW VTX
  • Output power: 25mw~200mw switchable
  • Frequency: 40CH
  • Input voltage: 3.3V 5.5V
  • Current consumption: 300mA(type)
  • Frequency: 5.8GHz 5bands 40 channels
  • With Race band
  • Smartaudio ready
Caddx ANT 1200TVL Camera
  • Image Sensor: 1/3" CMOS Sensor
  • Horizontal Resolution: 1200 TVL
  • TV System: NTSC or PAL Switchable
  • IMAGE: 4:3
  • Synchronization: Internal
  • Electronic Shutter: PAL: 1/50~100,000; NTSC: 1/60~100,000
  • S/N Ratio : >52dB (AGC OFF)
  • Video Output: CVBS
  • Lens: 1.8mm
  • Min. Illumination: 0.001Lux@F1.2
  • Auto Gain Control: YES
  • BLC: YES
  • WDR: Global WDR
  • DNR: 3D DNR
  • Dimensions: 14*14mm(with bracket to 19*19mm)
  • Wide Power Input: DC 3.7-18V
  • Work Temperature: -20℃~+60℃
  • Weight: 2g 


  • 1x HappyModel BNF Crux3 3" Quad - Choose Your RX