BetaFPV Air75 II Brushless Whoop Frame
The Air75 II is the upgraded second-generation 75mm whoop frame for brushless micro drones. It features a lighter, stronger design with improved duct geometry for better performance and durability. Designed for 40mm propellers and 25.5x25.5mm flight controllers, it's perfect for indoor flying, freestyle, and racing. A solid choice for building or upgrading your micro FPV setup.
Air75 II Brushless Whoop Frame — New Form, Peak Performance
The Air75 II Brushless Whoop Frame is a lightweight and durable structure designed for small FPV whoop drones. Redesigned arm braces and optimized duct geometry improve stability and PID response. The reshaped structure of Air75 II Brushless Whoop Frame increases thrust by up to 11%, enhancing propulsion efficiency and flight performance. Weighing only 4g, the Air75 II Brushless Whoop Frame is made from resilient material that absorbs impacts and improves crash resistance.
The Air75 II Brushless Whoop Frame Is Lighter, Stronger and Faster
The Air75 II Brushless Whoop Frame is an upgraded version of the popular whoop platform, redesigned to deliver improved performance and durability. Compared to the previous generation, the structure of the Air75 II Brushless Whoop Frame has been refined to reduce weight, minimize vibration, and enhance overall flight characteristics. With updated frame geometry, the Air75 II Brushless Whoop Frame provides improved stability, better PID response, and more efficient propulsion. At the same time, the Air75 II Brushless Whoop Frame maintains strong impact resistance, making it a reliable choice for dynamic FPV flying and training.
Air75 II Brushless Whoop Frame Key Features
Arm braces reduced from 6 to 4 + optimized duct geometry increase 11% thrust while maintaining uncompromising durability
Optimized connecting braces reduce frame amplitude and achieve ideal PID step response
Pilot-focused details, including motor fixed slots, motor screw protection structure, enlarged FC mounting holes (25.5x25.5mm), and lowered duct profile
Optimized PP blend makes it crash ready
Reshaped Frame Design for Up to 11% More Thrust
The Air75 II Brushless Whoop Frame features a redesigned structure that improves propulsion efficiency and flight performance. By reducing the number of arm braces from 6 to 4 and refining the duct aerodynamics, airflow efficiency has been significantly improved. As a result, the Air75 II Brushless Whoop Frame delivers up to 11% higher thrust compared to the previous generation, providing faster throttle response and more dynamic quadcopter performance.
Stable and Precise Flight
After numerous structural refinements, the final connecting arm design in the Air75 II Brushless Whoop Frame effectively reduces frame vibration. When paired with proper Feedforward tuning, the frame achieves a near-perfect PID step response, resulting in crisp maneuvers, fast stick response, and a smooth freestyle flying experience.
Optimized Resilient Material
The Air75 II Brushless Whoop Frame is made from an optimized polypropylene (PP) blend designed for flexibility and impact resistance. This material has been tested in demanding FPV environments and is capable of absorbing energy from hard crashes and sudden impacts. As a result, the Air75 II Brushless Whoop Frame remains durable even during aggressive freestyle flying, helping the quad recover quickly after rough landings or collisions.
Details That Matter
Attention to detail is a key part of the Air75 II Brushless Whoop Frame design. Retained motor fixed slots help ensure precise motor alignment, while the new motor screw protection structures help deflect impact forces during crashes. Additionally, enlarged 1.2mm FC mounting holes allow the use of 1.4mm screws, making electronics installation easier and improving overall compatibility and durability.
Air75 II Brushless Whoop Frame Dimensions
Air75 II Brushless Whoop Frame Specification
Material | PP (Polypropylene) |
Weight | 4.00g |
Wheelbase | 75mm |
Duct Diameter | 42.0mm |
Duct Height | 4.5mm |
Arm Braces | 4 |
Motor Mounting | 3x M1.4 (6.6mm) |
Flight Controller Mounting | 25.5x25.5mm |
Compatible Propellers | 40mm propellers |
Battery Slot Size | 16.3x6.3mm |
Maximum Frame Size | 99.1x99.1x16.2mm |
Color | Black, Grey |
Air75 II Brushless Whoop Frame Package Includes
- 1x Air75 II Brushless Whoop Frame
