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The iFlight BOB57 O3 is a carefully designed 6-inch frame ideal for long-range HD cinematic and freestyle FPV builds. The page describes seamless integration with the DJI O3 Air Unit and a solid antenna mount that reduces oscillations.
The technical specifications give a 278 mm wheelbase, dimensions of L165 x W225 x H34 mm, a weight of 305 ± 5 g, 6 mm arm thickness and 16x16 mm motor mounting (M2). The kit includes two 215 mm MIPI video cables for the O3 Air Unit. The page did not show the item as out of stock at ₹8,869.
6 inch frame: for long-range HD cinematic and freestyle builds.
DJI O3 Air Unit integration: compatible with O3 and Vista.
Hybrid motor design: for bi-blade or tri-blade 6 inch props.
H-shaped frame: robust middle section for minimal props in view.
Gladiator shell: protects components from dust and water.
Front-mounting XT-60: for convenient power connection.
A drone frame is the skeleton that holds everything together: the arms carry the motors, the plates carry the flight controller, ESCs, battery and camera, and the whole structure must be stiff enough that vibration does not reach the gyro. Carbon fibre is the standard material because it is light and very rigid. The wheelbase, measured motor to motor across the diagonal, sets the size of propeller the frame can carry, and the arm thickness sets how well it survives crashes.
Match the frame to your parts. Check the motor mounting pattern, the flight controller and ESC stack hole spacing, the camera width, the video system you want to fly and the largest propeller the arms allow. TPU parts such as arm guards, antenna mounts and camera mounts are printed in a flexible plastic so they absorb impact. The battery strap and anti-slip pad keep the pack from moving under G-force.
Build carefully. Use thread-locking compound on the metal screws that are not in a plastic nut, keep the screw lengths from the hardware bag matched to the holes they belong in, and do not over-tighten screws into carbon fibre. Route motor wires away from sharp plate edges, mount the flight controller on soft grommets when the frame supports it, and check that nothing rubs a propeller before the first flight. After a crash, inspect the arms for cracks and replace any that are damaged.
Plan the balance of the build. A heavier battery moves the centre of gravity, so place it where the frame is designed to carry it, and keep the antenna, GPS and camera clear of the carbon plates where possible because carbon blocks radio signals.
Long-range cinematic FPV
Freestyle
DJI O3 builds
6 inch propeller builds
Vista builds
The frame is compatible with the DJI O3 Air Unit and Vista. The motor mounting is 16x16 mm.
The Gladiator shell protects components from dust and water and the XT-60 mounts at the front.
Frame wheelbase: 278 mm
Dimensions: L165 x W225 x H34 mm
Weight: 305 ± 5 g
Arm thickness: 6 mm
Motor mounting: 16x16 mm
Manufacturer: iFlight
1 x BOB57 O3 frame kit
1 x BOB57 TPU parts
2 x 215 mm MIPI video cable for DJI O3 Air Unit
4 x Motor wire shield tube
1 x Battery anti-slip pad
2 x Battery strap
1 x Screw bag
Pilots who want a 6 inch frame built around the DJI O3.
278 mm.
305 ± 5 g.
6 mm.
DJI O3 Air Unit and Vista.
| Brand | iFlight |
|---|---|
| Arm Thickness | 6.000000 mm |
| Wheelbase | 278.000000 mm |
| Selling unit | PCS |
