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Unfolded Diameter (does not include Props)1325 mm
Folded Diameter (does not include Props)660 mm
Height to base of Toad In The Hole (TITH)263 mm


Maximum Gross for Takeoff18.1 kg (40.0 lbs)
Maximum Useful Load12.0 kg (26.4 lbs)
Maximum Payload9.1 kg (20.0 lbs)
Typical Standard Empty Weight6.2 kg (13.6 lbs)


Number of Motors8
Motor TypeDirect Drive 3-Phase PMAC Outrunner
Motor Make and ModelFreefly F45
Motor Max Continuous Power Output350 W
Motor Max Instantaneous Peak Power Output950 W
Maximum RPM (flat rated)6300 RPM
Equivalent Kv384
Electronic Speed ControllerFreefly Silent-Drive Sine Wave ESC

Powerplant Limitations

Maximum RPM6300 RPM
Maximum Battery Voltage25.2 Volts
Minimum Average Battery Voltage19.2 Volts


Make and ModelFreefly Alta Propeller
MaterialCarbon fiber with balsa core
Propeller Orientation(4) CW and (4) CCW Props - Alta Pro 8
Propeller Type18 × 6 Folding

Flight Controller

Autopilot NamePX4
Flight ModesManual, Height Mode, Position Mode, Return-to-Land (RTH), Autoland, Waypoint Mission mode
Supported InputsDSMX, DSM2, S.Bus, S.Bus2
Supported RadiosFutaba S.Bus & S.Bus2, DSMX, DSM2 (Spektrum/JR)
Supported Radio Controller Telemetry SystemsFutaba w/ built-in voltage sense port
Minimum Radio Controller Channels Required5
Supported GNSSGPS, GLONASS, Galileo
Supported Satellite-based Augmentation SystemQZSS, WAAS, EGNOS, MSAS
First-Person View System Video FormatsNTSC, PAL
Supported First-Person View TransmittersSkyzone, BOSCAM, ImmersionRC, Fat Shark
Supported First-Person View CamerasReady Made RC RMRC-700XVN (Recommended), Runcam Eagle 2 Pro, or similar
First-Person View OSD TelemetryUser Configurable
Installed TransceiversRFD900/868X Long Range Telemetry System Wi-Fi 2.4 GHz b/g/n
Default Data Logging Rate25Hz


Nominal Battery Voltage6S / 22.2V
Maximum Battery Size (GroundView)40 × 175 × 80 mm
Maximum Battery Size (SkyView)220 x 156 x 64 mm
Maximum Battery Quantity2 Battery Packs (Parallel)
Minimum Battery Quantity2 Battery Packs (Parallel)
Battery Connectors2× EC5 (Parallel)
Required Minimum Battery Discharge Rating (Per Pack)250A / 500A Peak

Flight Controller Limits

Maximum Pitch/Roll Angle45°
Maximum Yaw Rate150° / second

Isolation System

Vibration Isolation SystemO-Rings
Option 1: Soft / Light PayloadsRed O-Rings
Option 2: Medium / Medium PayloadsTeal O-Rings
Option 3: Stiff / Heavy PayloadsBlack O-Rings

Specific Loadings

Typical Specific Power145 W/kg
Thrust Ratio at MTOW11.85 : 1

Lighting & Indication

Status Light1 Watt Red, 1 Watt White LED
FPV AbilityFPV SD with OSD overlay
Orientation Lights3-Watt RGB LED
Orientation Light Color OptionsOff, Red, Orange, Yellow, Green, Blue, Cyan, Purple, White

External Systems Mounting

Mounting LocationsFPV Transmitter Mount GPS Mount Telemetry Radio Mount
Mounting SystemFreefly Toad In The Hole (TITH) Quick Release Dimensions / Drawing
FPV Camera MountBetween Booms 1 & 8 - Alta Pro 8
FPV Transmitter MountBoom 2 - Alta Pro 8
GPS MountBoom 7 - Alta Pro 8
Telemetry Radio MountBoom 3 - Alta Pro 8

Environmental Limitations

Do not fly Alta Pro in temperatures exceeding 45ºC (113ºF) or below -20ºC(-4ºF).