Do you remember the UR65 ? So URUAV is back with a new version: the UR85. And as usual now, we will have also an HD version with the caddx turtle V2 ! The price ? It seems 102$ for the non HD version..

The specs are now on URUAV official page.

So what's are the main interesting features for this one ?

  • Frame: 85mm
  • Canopy seems close to the Modula7 HD, looks nice !
  • Weight: 43g / 52g (HD)
  • 2/3S provided with a 3S 11.4v 300mah 40C/80C
  • XT30 connector (no need to solder one)
  • 0805 12000KV / 1102 10000KV (HD) double ball bearings (like Mobula7 HD)
  • Props: 1.9 inch
  • VTX: 25/200mW smartaudio

Not sure if the ESC specs are the correct because it seems a little bit low (5A and 6A for peak).

So let's see if we can see some flight footage or reviews ! I added them already in Which FPV Kwad !




  • Mode: 0805 KV12000

  • Configu-ration:9N12P

  • Stator Diamter:8mm

  • Stator Length:5mm

  • Shaft Diameter:Φ1.5mm

  • Motor Dimension(Dia.Len):Φ10.5mm17mm

  • Weight(g):3.0g

  • No.of Cells(Lipo):1S-3S

  • Mode: 1102 KV10000

  • Configu-ration:9N12P

  • Stator Diamter:11mm

  • Stator Length:2mm

  • Shaft Diameter:Φ1.5mm

  • Motor Dimension(Dia.Len):Φ13.5mm16mm

  • Weight(g):2.8g

  • No.of Cells(Lipo):1S-3S


  • (Frsky version) CRAZYBEE F4FR PRO V2.0 Firmware target: CrazybeeF4FR
  • (Flysky version) CRAZYBEE F4FS PRO V2.0 Firmware target: CrazybeeF4FS
  • (DSM2/DSMX version) CRAZYBEE F4DX PRO V2.0 Firmware target: CrazybeeF4DX
  • (No RX version) CRAZYBEE F4 PRO V2.0 Firmware target: CrazybeeF4DX
  • MCU:STM32F411CEU6 (100MHZ, 512K FLASH)
  • Sensor: MPU-6000(SPI connection)
  • Board size: 28.5 * 28.5MM
  • Power supply: 1-3S battery input (DC 3.5-13V)
  • Built-in 5A(each) Blheli_S 4in1 ESC Dshot600 ready
  • Frsky version Built-in SPI Frsky receiver with telemetry(D8/D16 switchable)
  • Flysky version Built-in SPI Flysky receiver with telemetry(AFHDS/AFHDS2A switchable)
  • DSM2/X Version built-in Serial-based DSM2/DSMX compatible satellite receiver
  • No RX version need to add external Receiver
  • Built-in Betaflight OSD(SPI Control)
  • Built-in Current meter Max 28A
  • Current meter scale set to 1175
  • Built-in 5V 1A Buck / Boost with LC filter
  • Built-in voltage detection

MCU upgraded to EFM8BB21
Power supply: 1-3S LiPo/LiPo HV (3.5v/13v)
Current: 5A continuous peak 6A (5 seconds)
Support BLHeliSuite programmable
Factory firmware: S_H_50_REV16_7.Hex
Default protocol: DSHOT600


  • Output power: 25~200mw switchable
  • Frequency: 40CH
  • Input voltage: 3.3V 5.5V
  • Current consumption: 300mA(type)
  • Antenna: RG178 antenna
  • Frequency: 5.8GHz 5bands 40 channels
  • With Raceband
  • Smartaudio ready
  • Weight: 3g


  • Capacity:300mAh
  • Voltage:11.4v
  • Continuous Discharge Rate: 40C
  • Instantaneous discharge rate: 80C
  • Size: 65mmx18mmx11mm
  • Weight: 25g
  • Connector: XT30