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BOB57 Frame Kit

The iFlight BOB57 Frame Kit is a long-range platform for cinematic and freestyle flights, developed with Ellis van Jason. It combines an H-shaped frame, support for 6-inch bi-blade or tri-blade propellers, a protective Gladiator shell and DJI O4 Air Unit Pro compatibility. Supplied accessories include TPU parts, motor wire shields and battery retention equipment.

iFlightDrone frame
Weight
305 g

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Product overview

The iFlight BOB57 Frame Kit is designed for long-range cinematic and freestyle flights, developed in collaboration with pilot and videographer Ellis van Jason. Its H-shaped frame has a robust middle section that reduces propellers in view, while the hybrid motor design supports both bi-blade and tri-blade 6-inch propellers. A solid antenna mount reduces oscillations when using long antennas. The Gladiator shell provides protection from dust and water droplets, and the XT-60 mounts at the front.

The frame has a 278mm wheelbase, measures L165*W225*H34 mm and weighs 305g. Construction uses 6mm arms, a 1.5mm bottom plate, a 2mm top plate and a 2.5mm upper plate. Maximum flight stack and VTX heights are each 22mm. The kit supports the DJI O4 Air Unit Pro. Manufacturing tolerances may be ±2mm overall, ±0.2mm for thickness and ±0.1mm for hole size.

Supplied equipment includes the BOB57 frame kit, BOB57 TPU parts, four motor wire shield tubes, a battery anti-slip pad, two battery straps and a screw bag. The O4 version also includes one 220mm MIPI video cable for the DJI O4 Air Unit Pro. The included dual-antenna VTX TPU requires two IPEX to SMA adapter cables and two antennas. IPEX to SMA adapter cables and the Anti Spark Filter are not included. Single-antenna installation requires the separately purchased O3 Single DJI Antenna TPU.

Propellers & airframes

Specifications

BOB57 Frame Kit specifications
SpecificationValue & conditions
Product nameIFlight BOB57 Frame Kit
Product type and applicationLong-range frame kit designed in collaboration with pilot and videographer Ellis van Jason
Flight applicationsCinematic and freestyle flights
Frame wheelbase278mm
Frame dimensionsL165*W225*H34 mm
Weight305g
Frame body dimension34mm
Arm thickness6mm
Bottom plate thickness1.5mm
Top plate thickness2mm
Upper plate thickness2.5mm
Maximum flight stack height22mm
Maximum VTX height22mm
Flight stack mounting20*20 Φ3mm / 30.5*30.5/Φ3mm
VTX mounting20*20 Φ2mm / 25.5*25.5 Φ1.6mm
Motor mounting16x16mm -φ4
CompatibilityDJI O4 Air Unit Pro
Motor designHybrid motor design supports bi-blade and tri-blade 6-inch propellersWith bi-blade or tri-blade 6-inch propellers.
Antenna mountSolid antenna mount reduces oscillationsWhen using long antennas.
Frame structureH-shaped frame with a robust middle section to reduce propellers in view
Protective shellGladiator shell protects from dust and water droplets
Power connector placementFront-mounting XT-60
Excluded accessoriesIPEX to SMA adapter cables and Anti Spark Filter are not included
Included antenna TPU and required accessoriesDual-antenna VTX TPU is included and requires 2pcs IPEX to SMA adapter cables and 2pcs antennasDual-antenna VTX TPU installation.
Single-antenna TPUO3 Single DJI Antenna TPU is purchased separatelyFor installation of one antenna.
Manufacturing toleranceStandard manufacturing tolerance may be ±2mmDue to manufacturing processes.
Thickness toleranceStandard thickness manufacturing tolerance may be ±0.2mmDue to manufacturing processes.
Hole size toleranceStandard hole size manufacturing tolerance may be ±0.1mm
Standard packing contents1 x BOB57 Frame Kit; 1 x BOB57 TPU Parts; 4 x Motor Wire Shield Tube; 1 x Battery Anti-Slip Pad; 2 x Battery Strap; 1 x Screw Bag
Included video cable1 x 220mm MIPI Video Cable for DJI O4 Air Unit ProO4 version only.

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