Ducted 3.5 inch cinewhoop design enables safe indoor and proximity flying
In stock
Frames
SpeedyBee Bee35 3.5 inch Frame
The SpeedyBee Bee35 is a 3.5 inch cinewhoop-style FPV frame with a 153mm wheelbase, designed for ducted, prop-protected flying that pairs smooth cinematic footage with safer indoor and close-proximity operation.
₹5,490 + 18% GST
SKU: BOTBIT-FRM-03 · Best for: Cinematic FPV filming (cinewhoop)
Overview
About SpeedyBee Bee35 3.5 inch Frame.
The SpeedyBee Bee35 is a 3.5 inch cinewhoop-style FPV frame with a 153mm wheelbase, designed for ducted, prop-protected flying that pairs smooth cinematic footage with safer indoor and close-proximity operation. Its compact deck is built specifically around HD digital FPV systems such as DJI O3 and similar air units, with a CNC heat sink and dedicated camera gimbal mount to keep HD electronics cool and the footage stable. It is sold as a frame so the pilot adds the flight stack, motors and air unit.
The Bee35 uses a 3.5mm top plate and 2mm bottom plate for stiffness in a small airframe, and its prop ducts let it survive bumps against walls and obstacles that would damage an open-prop quad. Multiple stack patterns (20x20, 25.5x25.5 and 30.5x30.5) and VTX mounting options give builders flexibility to fit a wide range of flight controllers, 4-in-1 ESCs and HD or analog video transmitters.
It suits cinematic FPV creators wanting a small, safe cinewhoop, indoor and venue flyers who need prop protection around people, and real-estate or event videographers who want smooth, controllable footage. Its size makes it a practical bridge between tiny whoops and full 5 inch freestyle quads.
Key features
Why it stands out.
Purpose-built for HD air units with a CNC heat sink and gimbal mount
Supports 20x20, 25.5x25.5 and 30.5x30.5 stacks for flexible builds
Stiff 3.5mm top and 2mm bottom plates resist flex on a compact airframe
Prop ducts protect props and surroundings during close-quarters flight
Specifications
Selection facts.
| Wheelbase | 153mm |
|---|---|
| Propeller size | 90mm (3.5 inch) |
| Top plate thickness | 3.5mm |
| Bottom plate thickness | 2mm |
| Frame weight | 138 g |
| Motor mount | 12x12mm |
| Stack mounting | 20x20 / 25.5x25.5 / 30.5x30.5mm |
| Camera mounting distance | 19/20mm |
| Recommended motors | 1806 / 2004 / 2006 |
| Recommended battery | 900-1500mAh 4S/6S |
Applications
Where it is used.
- Cinematic FPV filming (cinewhoop)
- Indoor and venue FPV flying
- Real-estate and property videography
- Event and wedding aerial filming
- Close-proximity proximity shots near people
- HD digital FPV builds with O3-class air units
Buying guide
How to choose.
Decide on your HD system first. The Bee35 is built around digital air units, so confirm whether you want a DJI O3, an alternative HD unit, or analog before buying, and check that your chosen air unit and camera fit the gimbal mount and heat sink area. The CNC heat sink is important for keeping HD electronics cool inside the compact body.
Match motors and battery to the cinewhoop mission. The frame is designed for 1806/2004/2006 motors on 4S or 6S; lower-KV 6S setups give smoother throttle and longer cruise for cinematic work, while 4S gives a lighter, livelier feel. Use 900-1500mAh packs and balance capacity against the extra weight ducts and HD gear add.
Choose the Bee35 when safety and smooth footage matter more than top speed. The ducts protect props and bystanders, making it ideal for indoor venues and shots near people, but they add drag and weight, so it is not a racing or aggressive freestyle frame. There is also a Bee35 Pro variant if you need a slightly different build option.
FAQ
Common questions.
Is the Bee35 designed for DJI O3?
Yes, the Bee35 is built around HD digital FPV systems and includes a CNC heat sink and gimbal mount to suit air units like the DJI O3. Confirm the exact air unit and camera dimensions against the frame before buying, as HD systems differ and mounting may need the matching gimbal hardware.
What propeller size does it use?
The Bee35 takes 3.5 inch ducted propellers, around 90mm diameter. The ducts both protect the props and improve thrust efficiency at low speed, which helps produce the smooth, controllable flight that cinewhoops are valued for.
Can I fly the Bee35 indoors?
Yes. The ducted design is one of the main reasons to choose it, as the prop guards make flying near walls, ceilings and people much safer than an open-prop quad. It is well suited to indoor venues, corridors and tight interior shots.
What motors are recommended?
SpeedyBee recommends 1806, 2004 or 2006 class motors. For 4S use roughly 2500-3500KV and for 6S around 1800-2300KV. Lower-KV 6S setups tend to give the smoothest throttle response for cinematic filming.
What stacks fit the Bee35?
The frame supports 20x20, 25.5x25.5 and 30.5x30.5mm flight stack patterns, so most micro and standard 4-in-1 ESC and flight controller combos will fit. This flexibility lets you choose a stack that matches your motor and battery current needs.
How much does the frame weigh?
The Bee35 frame on its own weighs about 138g, with the CNC heat sink adding around 15g and the camera gimbal about 28g. Remember that a finished cinewhoop with HD gear, motors and battery will weigh considerably more, which affects flight time.
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