The O3 Air Unit Protective Case is meticulously designed for optimal protection and performance enhancement. Crafted with custom-made aluminum alloy and silicone shock absorption, it ensures effective protection against damage and eliminates the ‘jelly’ effect. With features like heat dissipation, versatile stack compatibility, and convenient connectivity options, it offers durability, ease of installation, and seamless integration with various drone components.
Features:
- A custom aluminum alloy head safeguards the O3 Air Unit.
- Silicone shock absorption eliminates the ‘jelly’ effect for smoother footage.
- Custom-designed bottom aluminum alloy ensures effective heat dissipation.
- Compatible with 20x20mm, 25x25mm, and 30.5×30.5mm stacks.
- Dual binding designs for both horizontal and vertical battery support enhance durability.
- Supports Type-C and micro interfaces for easy connection to flight
- Camera Mounting Distance: 19/20mm
- ESC/Motor Mounting Height: 24mm
- Flight Stack Mounting Holes: 20*20/25.5*25.5/30.5*30.5mm
- Video Transmitter Mounting Holes: 20*20/25.5*25.5
- Recommended Motor: 1806/2004/2006
- Recommended KV: 4S/2500-3500KV, 65/1800-2300KV
Specification:
| Item Type: | Frame |
|---|---|
| Wheelbase (mm) | 153 |
| Top plate thickness | 3.5 |
| Bottom Plate Thickness | 2mm |
| Prop. Diameter (inch): | 3.5 |
| Motor Mount Hole Dia. (mm) | 12*12 |
| Weight (g): | 138 |
| Support motor | 1806, 2004, 2006 |
| Recommended battery (Ah) | 900-1500mAh 4S/6S |
Package Includes:
1 x SpeedyBee Bee 35 3.5 inch Frame
Technical Specifications
| Brand | SpeedyBee |
|---|---|
| Display Size | 3.5" |
| SKU | AI7155 |
| Weight | 1.2 kg |
| Availability | Out of Stock |
Applications & Use Cases
The SpeedyBee Bee35 3.5 inch Frame is a versatile flight controller & accessories used across a wide range of applications including autonomous drones, FPV racing quadcopters, agricultural drones, and surveying and mapping platforms.
Common use cases:
- Central brain for drone stabilization and navigation
- GPS waypoint missions for surveying
- Acro mode flying for FPV freestyle
This product is ideal for drone builders requiring precise flight control.
Technical Tip: F4 processors are good for basic builds; F7 or H7 recommended for advanced features. Ensure firmware compatibility (Betaflight, ArduPilot, iNAV).
Shipping & Delivery
- Free shipping on orders above ₹999 across India
- Dispatched within 1-3 business days
- Expected delivery: 3-7 business days depending on location
- Secure packaging to ensure safe transit of electronic components
- Genuine SpeedyBee product sourced from authorized channels

Isha Malhotra (verified owner) –
Decent SpeedyBee Bee35 3.5 inch Frame. Took some effort to set up but working now.
Vivek Mukherjee (verified owner) –
Perfect for my agriculture drone project. This SpeedyBee Bee35 3.5 inch Frame handles the weight effortlessly.
Pranav Thakur (verified owner) –
Excellent SpeedyBee Bee35 3.5 inch Frame! Perfect for my quadcopter build. Arrived well packed and works flawlessly.
Ajay Dhawan (verified owner) –
Received the SpeedyBee Bee35 3.5 inch Frame in great condition. Testing done, everything works perfectly.
Rishabh Verma (verified owner) –
Okay SpeedyBee Bee35 3.5 inch Frame. Gets the job done for my basic drone project. Nothing exceptional.
Sahil Jain (verified owner) –
My 5th order from Zbotic. This SpeedyBee Bee35 3.5 inch Frame is excellent as always. Totally reliable store.
Anirudh Thakur (verified owner) –
Decent SpeedyBee Bee35 3.5 inch Frame for the price. Using it in my quadcopter, performs well overall.
Chitra Chopra (verified owner) –
Very impressed with this SpeedyBee Bee35 3.5 inch Frame. My drone’s performance improved noticeably.
Sameer Khanna –
Very impressed with this SpeedyBee Bee35 3.5 inch Frame. My drone’s performance improved noticeably.
Vishal Deshpande –
Bought this for my college drone project. Works great, professor was impressed!
Bikram (verified owner) –
osm product, good quality
Devansh Kamath (verified owner) –
Nice SpeedyBee Bee35 3.5 inch Frame, does the job. Delivery took a couple of extra days but product is solid.
Nandini Bose (verified owner) –
Great quality SpeedyBee Bee35 3.5 inch Frame. Perfect specs for my drone project. Fast delivery too!
Sakshi Saxena –
Good quality SpeedyBee Bee35 3.5 inch Frame. Minor scratches on arrival but functionally perfect.
Atharv Vyas –
Using this SpeedyBee Bee35 3.5 inch Frame in my hexacopter. Smooth operation and excellent thrust.
Krishna Deshpande –
Okay SpeedyBee Bee35 3.5 inch Frame. Gets the job done for my basic drone project. Nothing exceptional.
Sarthak Dave (verified owner) –
This SpeedyBee Bee35 3.5 inch Frame is exactly what I needed for my drone. Works perfectly, very reliable.
Naveen Vohra (verified owner) –
This SpeedyBee Bee35 3.5 inch Frame exceeded my expectations. Installed it yesterday and took a successful test flight today.
Aryan Verma (verified owner) –
This SpeedyBee Bee35 3.5 inch Frame is value for money. Comparing with other brands, Zbotic offers the best deal.
Nikita Kamath (verified owner) –
Good product overall. My drone is flying well with this SpeedyBee Bee35 3.5 inch Frame. Satisfied with the purchase.
Sneha Srivastava (verified owner) –
Received the SpeedyBee Bee35 3.5 inch Frame in great condition. Testing done, everything works perfectly.
Ankit Panchal (verified owner) –
Top quality SpeedyBee Bee35 3.5 inch Frame. I’m a regular customer of Zbotic and they never disappoint.
Yashwant Bhatt (verified owner) –
Using this SpeedyBee Bee35 3.5 inch Frame in my hexacopter. Smooth operation and excellent thrust.
Arnav Arora (verified owner) –
Very impressed with this SpeedyBee Bee35 3.5 inch Frame. My drone’s performance improved noticeably.
Gaurav Menon (verified owner) –
Good quality SpeedyBee Bee35 3.5 inch Frame. Minor scratches on arrival but functionally perfect.