Freefly
Freefly Astro Max Spare Propeller Pair (2270 High Efficiency)
The Freefly Astro Max Spare Propeller Set (2270 High Efficiency) is a factory-balanced, matched pair of 22 × 7 in carbon-fiber composite blades built exclusively for the Astro Max airframe. Each blade ships pre-mounted to its hub, so a complete assembly swaps onto the motor in seconds for consistent pitch and balance. Compared to the original 21 in 2170 propellers, the 2270 high-efficiency geometry delivers roughly 10% longer flight time, giving mapping, inspection, and public safety crews more useful endurance per battery on the same aircraft.
Factory-balanced 22 × 7 in carbon-fiber propellers for the Astro Max. One CW, one CCW, eight mounting screws. About 10% more flight time than the original 21 in 2170 props.
Features
- High-efficiency 22 × 7 in blade geometry tuned specifically for the Astro Max, delivering approximately 10% longer flight time than the original 21 in 2170 propellers
- Carbon-fiber composite construction balances stiffness with low rotational mass for quick throttle response and a lower acoustic signature
- Pre-mounted to the propeller hubs at the factory and balanced as a matched CW / CCW pair for smooth, vibration-free operation out of the box
- Clear "2270 CW" and "2270 CCW" markings molded into each blade for quick identification during preflight and installation
- Eight M3 × 6 socket-head cap screws included: enough hardware to mount both propellers per the Astro Maintenance Manual
- Genuine Freefly part (MPN 910-00900), designed and assembled in the United States as part of the Astro Max Blue UAS / NDAA-compliant supply chain
Specifications
| Specification | Value |
|---|---|
| Compatible aircraft | Freefly Astro Max (all variants, including Astro Max NDAA / Blue UAS) |
| Propeller class | 2270 High Efficiency |
| Size | 22 × 7 in |
| Diameter | 21.8 in (554 mm) unfolded |
| Material | Carbon-fiber composite |
| Rotation pair | 1 × clockwise (CW), 1 × counter-clockwise (CCW) |
| Blade markings | "2270 CW" or "2270 CCW" on each blade |
| Hub | Pre-mounted from the factory; assemblies are matched and balanced as a pair |
| Mounting hardware | 8 × M3 × 6 socket-head cap screws (SHCS) |
| Flight time vs. 2170 | Approximately 10% longer endurance than the original 21 in (2170) Astro Max props |
| MPN | 910-00900 |
| UPC | 727252611456 |
| Origin | Designed and assembled in the USA |
What's included
- 1 × Astro Max 2270 High Efficiency propeller, clockwise (CW), pre-mounted to hub
- 1 × Astro Max 2270 High Efficiency propeller, counter-clockwise (CCW), pre-mounted to hub
- 8 × M3 × 6 socket-head cap screws
Compatibility and upgrade guidance
- Astro Max only. These propellers are designed for the Astro Max motors and are not compatible with the original Freefly Astro or the Alta platforms.
- Already running 2270 props. Buy any quantity for spares. Most operators keep one set on the shelf (1 × CW + 1 × CCW) so a single damaged blade does not ground the aircraft.
- Upgrading from 2170 to 2270. Purchase two sets to convert all four motor positions. A third set is a sensible spare pair for field operations.
- Do not mix. Never run 2170 (standard) and 2270 (high-efficiency) blades on the same aircraft. Mixed propellers create unbalanced thrust and unpredictable flight characteristics.
- Check the markings. Confirm "2270 CW" or "2270 CCW" on every blade before installation, and confirm the rotation matches the motor position per the Astro Maintenance Manual.
Installation and care
- Inspect propellers before every flight. Replace any blade that is chipped, cracked, warped, or shows fiber delamination. A damaged propeller is one of the most common preventable causes of in-flight failure on a multirotor.
- Use the supplied M3 × 6 screws and follow the torque value specified in the Astro Maintenance Manual. A prop bolt wrench is required for installation and is sold separately.
- Treat each CW / CCW assembly as a balanced unit. Do not swap individual blades between sets; replace the complete assembly to preserve factory balance.
- After installation, perform a hover check and confirm there is no unusual vibration or acoustic signature before committing to the mission.
Please note: This listing is a single matched pair (1 × CW, 1 × CCW) and is intended as a spare or replacement. The Astro Max uses two pairs to make a complete set of four propellers. The aircraft, prop bolt wrench, and any other tools are sold separately. Refer to the Astro Maintenance Manual for full installation, inspection, and torque procedures.
Under FAA Part 107, the remote pilot in command is responsible for ensuring the aircraft is in a condition for safe operation before each flight (14 CFR 107.49). A current set of undamaged, factory-spec propellers is part of that preflight determination. Inspect, document, and replace propellers on the schedule appropriate to your operation.
FAQ
What is the difference between 2170 and 2270 propellers?
The 2170 is the original 21 in propeller that ships with the Astro Max. The 2270 is a newer 22 in high-efficiency design with a longer blade and revised aerodynamic geometry, providing approximately 10% longer flight time on the same airframe. The two are not interchangeable on a per-motor basis; the entire aircraft must run one or the other.
Are these compatible with the original Freefly Astro?
No. The 2270 High Efficiency propellers are designed exclusively for the Astro Max motors. They are not compatible with the original Astro or with the Freefly Alta platforms.
How many sets do I need to convert a 2170-equipped aircraft to 2270?
Two sets. The Astro Max has four motor positions, two CW and two CCW. Each set in this listing covers one CW and one CCW position, so two sets are required to convert the whole aircraft. Many operators add a third set as a field spare.
Can I run one 2270 propeller alongside three 2170 propellers?
No. Mixing 2170 and 2270 props on the same aircraft is not supported and will produce unbalanced thrust. If a single 2170 blade is damaged on a 2170-equipped Astro Max, replace it with another 2170. If you want to move to 2270, replace all four positions at the same time.
Do the propellers come pre-balanced?
Yes. Each CW and CCW blade is pre-mounted to its hub and the pair is factory balanced together. Replace assemblies as a matched pair; do not swap individual blades between sets, as that breaks the factory balance.
What hardware comes in the box?
Each set ships with eight M3 × 6 socket-head cap screws, four per propeller. Use these new screws rather than reusing old hardware. A prop bolt wrench is required for installation and is sold separately.
When should I replace a propeller?
Replace any propeller that shows visible damage during preflight inspection, including chips, cracks, gouges, warping, or carbon-fiber delamination. Replace immediately after any prop strike or hard landing, even if no damage is visible. Many operators also replace propellers on a fixed flight-hour or cycle interval as part of a documented maintenance program; refer to the Astro Maintenance Manual and your own SOP for the interval that fits your operation.
Can damaged propellers be repaired?
No. Composite propellers should not be field-repaired with adhesives or fillers. A damaged blade has compromised structural integrity and unpredictable balance, both of which create real risk in flight. Replace damaged propellers; do not repair them.
