Quick Answer
The BETAFPV 0802 is built for 75mm whoop frames like the Air75 II and spins larger 40mm props, giving more thrust and top speed. The 0702 is designed for 65mm frames like the Air65 II, uses smaller 31mm props, and weighs roughly 0.4g less per motor. Both 2026 editions share the same industry-first 0.10mm stator core for improved efficiency and cooler running. Pick the 0802 for outdoor speed and the 0702 for indoor agility.
What Is the 0.10mm Stator Core?
Both 2026 motors use a 0.10mm silicon steel stator lamination, thinner than previous generations. Stator laminations work like sheets in a transformer core, and thinner sheets mean fewer eddy currents and less magnetic loss. The result is a 0.1 to 0.2 g/W efficiency improvement over older designs. For 1S whoops where every milligram matters, that means longer flight times, less heat, and more consistent power delivery under sustained load.
Previous generation motors typically used 0.20mm or thicker laminations. Halving the lamination thickness is a genuine engineering step that reduces waste heat and helps the motor retain efficiency during technical racing lines where throttle sits between zero and full.
Technical Comparison
| Specification | 0702 (2026) | 0802 (2026) |
|---|---|---|
| Stator Size | 7mm x 2mm | 8mm x 2mm |
| Target Frame | 65mm (Air65 II) | 75mm (Air75 II) |
| Prop Size | 31mm (GF 1207) | 40mm (GF 1614) |
| KV Range | 25,000 / 30,000 / 36,000 | 22,000 / 25,000 / 28,000 |
| Max Power (Champion) | 27.53W | 34.3W |
| Max Current (Champion) | 7.17A | 9A |
| Weight (Champion) | 1.59g | 1.95g |
| Weight (Racing/Freestyle) | 1.50g | 1.88g |
| Shaft Length | 3.4mm | 4.0mm |
| Stator Core | 0.10mm | 0.10mm |
| Voltage | 1S (4.2V) | 1S (4.2V) |
| Bearing (Champion) | Dual-ball | Dual-ball |
| Bearing (Racing/Freestyle) | Brass bushing | Brass bushing |
Frame Size and Prop Choice
The fundamental difference comes down to frame class. A 65mm frame needs a lighter motor with shorter shafts to pair with 31mm propellers. The 0702 fills that role at 1.50g per motor (Racing/Freestyle variants), keeping all-up weight low for snappy indoor flying and tight cornering.
The 0802 sits in the 75mm class, swinging 40mm props that generate noticeably more thrust. The trade-off is roughly 0.38g extra per motor and slightly less nimble handling indoors. For outdoor flying, larger props mean better punch-out and top speed, making the 0802 the stronger choice for racing on open courses.
KV and Flight Style
Both lines offer three variants with the same naming convention:
- Freestyle (lowest KV): Smooth throttle curve, longer flight times, good for cinematic flying and beginners
- Racing (mid KV): Balanced power and efficiency, suited to technical race courses
- Champion (highest KV): Maximum RPM and punch, dual-ball bearings for durability, aimed at competitive pilots
The Champion variants cost slightly more and include dual-ball bearings instead of brass bushings. If you fly regularly and push motors hard, the bearings justify the premium through longer service life.
What to Buy
For 65mm builds: The BETAFPV 0702 Brushless Motors (2026) pair with the Air65 II and GF 1207 props. Choose 25,000KV for freestyle or 36,000KV for racing.
For 75mm builds: The BETAFPV 0802 Brushless Motors (2026) are the direct match for the Air75 II and GF 1614 props. The 25,000KV Racing variant hits the sweet spot for most pilots.
Browse the full range in our brushless motors collection, or check the motors and ESC section for compatible flight controllers. For more on selecting the right KV and prop combination, see our guide on how to match motors to ESCs and props, or read about drone motor torque and thrust ratings for a deeper look at the numbers.
FAQ
Can I put 0802 motors on a 65mm frame?
Technically yes, since the mounting pattern (3 x M1.4, 6.6mm diameter) is the same. However, the longer 4.0mm shaft and extra weight will make the build sluggish, and you would need smaller props that defeat the purpose of the larger stator. Stick to the 0702 for 65mm builds.
Is the 0.10mm stator worth upgrading from older motors?
If you are still running 2024-era 0702 or 0802 motors, the 2026 editions offer a measurable efficiency gain. Cooler running and improved flight times are real improvements. For competitive pilots the upgrade is worthwhile; for casual indoor flying the difference is smaller but still noticeable.
Do I need an ESC upgrade to run 2026 motors?
Not necessarily. The 2026 motors draw similar current to their predecessors and work with standard 1S AIO flight controllers rated 10A to 12A per channel. The Champion variants draw the most (up to 9A on the 0802), so confirm your FC can handle that ceiling.