BETAFPV Air75 II Brushless Whoop Frame

For over a year, the Air75 frame has been the benchmark for lightness and agility. Now, BETAFPV is introducing an even lighter version, the Air75 II (4g), designed in collaboration with the global pilot community and redefining the shape. BETAFPV’s R&D team has meticulously analyzed every detail of the design, from the hand braces to the channel geometry and impact points. The result is a bold yet refined design: 4 braces instead of 6, complemented by optimized channels and a connecting structure. This has reduced the frame amplitude, increased drag by 11 % and achieved a near-perfect PID response. Underneath this shape lies rigidity. The optimized PP matrix effectively absorbs shocks even after hard falls. Every detail has been thought out down to the smallest detail – the bolt protection design, enlarged FC holes and reduced channel profile ensure reliability and superiority in the air.

Features:

• Reduced number of reinforcements from 6 to 4 and optimized channel geometry increases traction 11 % while maintaining impeccable rigidity.
• Optimized connection structure reduces frame amplitude and ensures ideal PID response.
• Improved PP material composition ensures impact resistance – the frame is prepared for accidents.
• Pilot-friendly details: engine mounting holes, bolt protection structure, enlarged FC mounting holes (25.5 x 25.5 mm) and reduced channel profile.
• Weighing just 4g, the Air75 II version is 10% lighter than the first generation.

Specification:

• Item: Air75 II Brushless Whoop Frame;
• Material: PP;
• Weight: 4.00 g;
• Frame diagonal: 75 mm;
• Motor mounting: 3 × M1.4 – 6.6 mm;
• Flight controller mounting holes: 25.5 x 25.5 mm;
• Battery slot size: 16.3 x 6.3 mm;
• Maximum dimensions: 99.1 x 99.1 x 16.2 mm;
• Colors: Black, Transparent blue, Transparent orange, Transparent purple, Transparent white.

Diagram

Redesigned frame shape: +11 % thrust

By strategically reducing the number of arm reinforcements from 6 to 4 and improving duct aerodynamics, the Air75 II achieves 11 % more thrust compared to the first-generation model - ensuring extremely fast throttle response and stable power throughout the flight.

Reliable flight

After numerous structural improvements, the final design of the connecting arms effectively reduces frame vibration. Combined with Feedforward tuning, this system achieves near-perfect PID response, allowing for precise maneuvers and ultra-smooth freestyle flight.

Optimized, resistant material

The battlefield-tested PP material composition easily withstands impacts with concrete and tree branches. Survive even the toughest freestyle crashes – and get home safely.

Attention to every detail

Every gram is thoughtfully crafted. Retained engine mounting holes ensure precise alignment, a new bolt protection design deflects impact force in the event of a crash, and enlarged 1.2mm FC holes allow for easy use of 1.4mm bolts. Where pilot priorities meet engineering perfectionism.

Package:

1 x Air75 II Brushless Whoop frame.