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280KV
12S / 15-inch props
Idle current0.8A @ 10V
Resistance68mΩ
Published peak56.7A / 2677.4W
Bench: 7.115kg at 47.22V, 15×10 two-blade.
EMAX ECOII 3530 Brushless Motor
EMAX ECOII 3530 Brushless Motor
Availability:Out of stock
$48.99
ECO II SERIES / FIXED-WING POWER
Brushless Motor Platform
EMAX ECO II 3530
The EMAX ECO II 3530 is a tall, high-torque brushless outrunner for fixed-wing aircraft using 12- to 15-inch propellers. Four windings—280KV, 445KV, 520KV and 650KV—span 5S through 12S systems around a 12N14P architecture, M6 propeller shaft, 25 × 25mm four-M3 motor mount and supplied X-shaped firewall mount.
Four KV options. One 3530 platform.280KV: 12S / 15-inch prop445KV: 6S / 14–15-inch props520KV: 6S / 13–14-inch props650KV: 5S–6S / 12–14-inch props
Motor weight300gIncluding 95mm leads
Motor sizeØ42.5mm82mm overall length
Motor mount25 × 25mmExactly four M3 holes
Framework12N14PFixed-wing outrunner
Four fixed-wing power profiles. Official EMAX bench sheets recorded up to 7.115kg of thrust, with windings covering 5S through 12S systems.
01 / KV Selection
Match winding, voltage and propeller load.
Published electrical guidance and maximum-throttle highlights come from the official ECO II 3530 sheets.
445KV
6S / 14–15-inch props
Idle current1.3A @ 10V
Resistance32mΩ
Published peak57.2A / 1403.7W
Bench: 5.300kg at 24.54V, HQ15×10 two-blade.
520KV
6S / 13–14-inch props
Idle current1.5A @ 10V
Resistance22mΩ
Published peak56.8A / 1394W
Bench: 5.510kg at 24.53V, GF14×7 two-blade.
650KV
5S–6S / 12–14-inch props
Idle current2.1A @ 10V
Resistance16mΩ
Published peak82.5A / 2004.7W
Bench: 6.250kg at 24.29V, HQ13×6.5 two-blade.
02 / Performance Envelope
Maximum recorded thrust by winding.
03 / Construction
Tall outrunner architecture for sustained propeller load.
01 / SHAFT
Steel M6 Shaft
An 18mm-long CW-threaded M6 propeller interface uses a 6mm bearing shaft.
02 / ROTOR
Anodized Rotor Bell
The tall rigid outer bell surrounds a full-height 14-pole magnet ring.
03 / STATOR
12-Slot Wound Stator
Dense multi-strand copper windings form the fixed 12-slot stator.
04 / BEARING
Precision Bearing
Concentric bearing support promotes smooth rotation under sustained load.
05 / MOTOR MOUNT
Four-Hole Rear Base
The motor base uses exactly four M3 threaded holes on a 25 × 25mm pattern.
06 / CONNECTIONS
4mm Banana Plugs
Three 95mm enamelled leads terminate in male 4.0mm banana connectors.
04 / Mechanical Data
3530 geometry and installation details.
| Motor model | EMAX ECO II 3530 |
|---|---|
| Framework | 12N14P |
| Motor diameter | Ø42.5mm |
| Overall length | 82mm |
| Body length | 55mm |
| Weight | 300g with wire |
| Bearing shaft | Ø6mm |
| Propeller shaft | M6 CW thread, 18mm threaded length |
| Motor mounting | 25 × 25mm, four M3 holes |
| Supplied X mount | 50/60mm mounting circles, four Ø4.1mm holes |
| Motor leads | 95mm enamelled wire with 4.0mm male plugs |
Fixed-wing installation, complete hardware kit.
The compact four-M3 rear base attaches to the included X-shaped firewall mount.
The separate mount provides four outer airframe holes while the motor retains its precise 25 × 25mm interface.
Installation: Confirm firewall strength, propeller clearance, fastener engagement, ESC headroom and cooling.
05 / Electrical Specifications
KV-specific published limits.
| KV | Cells | Propeller | Idle current | Resistance | Peak current | Max power |
|---|---|---|---|---|---|---|
| 280KV | 12S | 15" | 0.8A @ 10V | 68mΩ | 56.7A | 2677.4W |
| 445KV | 6S | 14–15" | 1.3A @ 10V | 32mΩ | 57.2A | 1403.7W |
| 520KV | 6S | 13–14" | 1.5A @ 10V | 22mΩ | 56.8A | 1394W |
| 650KV | 5S–6S | 12–14" | 2.1A @ 10V | 16mΩ | 82.5A | 2004.7W |
06 / Bench Data
Maximum-throttle load-test highlights.
280KV test highlight12S / 15×10 two-blade
| Voltage | Propeller | Current | Thrust | Power | Efficiency | RPM |
|---|---|---|---|---|---|---|
| 47.22V | 15×10, 2-blade | 56.70A | 7,115g | 2677.4W | 2.70g/W | 9,690 |
445KV test highlightsThree propellers
| Voltage | Propeller | Current | Thrust | Power | Efficiency | RPM |
|---|---|---|---|---|---|---|
| 24.71V | GF14×7, 2-blade | 37.40A | 4,330g | 925.3W | 4.68g/W | 9,025 |
| 24.68V | HQ15×7, 2-blade | 41.70A | 4,850g | 1029.7W | 4.71g/W | 8,866 |
| 24.54V | HQ15×10, 2-blade | 57.20A | 5,300g | 1403.7W | 3.78g/W | 8,289 |
520KV test highlightsTwo propellers
| Voltage | Propeller | Current | Thrust | Power | Efficiency | RPM |
|---|---|---|---|---|---|---|
| 24.59V | GF13×6.5, 2-blade | 49.20A | 4,830g | 1208.9W | 4.00g/W | 10,376 |
| 24.53V | GF14×7, 2-blade | 56.80A | 5,510g | 1394.0W | 3.95g/W | 10,112 |
650KV test highlightsThree propellers
| Voltage | Propeller | Current | Thrust | Power | Efficiency | RPM |
|---|---|---|---|---|---|---|
| 20.47V | GF14×7, 2-blade | 70.70A | 5,550g | 1447.6W | 3.83g/W | 10,099 |
| 24.46V | HQ12×6, 2-blade | 62.10A | 5,060g | 1519.9W | 3.33g/W | 12,701 |
| 24.29V | HQ13×6.5, 2-blade | 82.50A | 6,250g | 2004.7W | 3.12g/W | 11,910 |
07 / In The Box
Motor, firewall mount and connection hardware.
1×EMAX ECO II 3530 motor
1×X-shaped motor mount
5×M3 × 6mm screws
1×Steel M6 nylock nut
1×Serrated propeller washer
3×4.0mm female connectors
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