Emax USA

EMAX ECOII 5215 Brushless Motor

$69.99 USD Sold out
KV
Notes
ECO II SERIES / LARGE MULTIROTOR POWER
Brushless Motor Platform

EMAX ECO II 5215

The EMAX ECO II 5215 is a large-format brushless outrunner for long-range FPV, heavy-lift multirotors and cinematic aircraft using 13- to 17-inch propellers. Five windings—230KV, 260KV, 300KV, 360KV and 420KV—cover 6S through 12S systems around a 12N14P architecture, M6 propeller interface and four-hole 30 × 30mm airframe mount.

Five KV options. One 5215 platform.230KV / 260KV / 300KV / 360KV: 8S–12S420KV: 6S–8SPublished propeller range: 13–17 inches
Motor weight341gIncluding 400mm leads
Motor sizeØ60.6mm65.7mm overall length
Mount30 × 30mmExactly four M4 holes
Framework12N14PLarge outrunner architecture
EMAX ECO II 5215 brushless motor for 13- to 17-inch long-range and heavy-lift multirotors

Large-prop power across five windings. Official EMAX bench sheets recorded up to 9.32kg of thrust, while the 230KV through 420KV range lets builders match the motor to 6S–12S aircraft configurations.

01 / KV Selection

Match winding, voltage and propeller load.

Electrical limits come from the official ECO II 5215 specification sheet. Bench highlights use the maximum-throttle rows from the matching EMAX load-test sheets.

230KV
8S–12S / 17-inch props
Lowest-KV large-prop profile.
Idle current0.8A @ 10V
Resistance55mΩ
Published peak76.3A / 3412W
Bench: 9.32kg at 44.71V, GF1708 three-blade.
260KV
8S–12S / 15-inch props
12S profile for 15-inch loads.
Idle current0.9A @ 10V
Resistance50mΩ
Published peak69.2A / 3266W
Bench: 9.14kg at 47.21V, HQ1507 three-blade.
300KV
8S–12S / 13–17-inch props
Broadest published prop range.
Idle current1.2A @ 10V
Resistance41mΩ
Published peak72.1A / 3396W
Bench: 8.40kg at 47.23V, 1507 two-blade.
360KV
8S–12S / 13–17-inch props
Higher-RPM multi-voltage profile.
Idle current1.4A @ 10V
Resistance32mΩ
Published peak87.4A / 3894W
Bench: 9.27kg at 44.56V, HQ1308 three-blade.
420KV
6S–8S / 13–15-inch props
Highest-KV medium-voltage profile.
Idle current1.7A @ 10V
Resistance26mΩ
Published peak77.7A / 2412W
Bench: 7.47kg at 31.03V, GF1309 three-blade.
EMAX ECO II 5215 KV guide for 230KV, 260KV, 300KV, 360KV and 420KV windings

Select from the complete aircraft backward. Match KV to battery voltage, propeller load, ESC rating, aircraft mass, airflow and required thrust. Validate the final system under realistic thermal conditions.

02 / Performance Envelope

Maximum recorded thrust by winding.

230KV
9.32kg
260KV
9.14kg
300KV
8.40kg
360KV
9.27kg
420KV
7.47kg

Maximum values are configuration-dependent bench results from the supplied EMAX load-test sheets.

03 / Construction

Large-outrunner hardware with precision support.

01 / SHAFT

Steel M6 Shaft

A CW-threaded M6 propeller interface and 6mm bearing section support the rotating assembly.

02 / ROTOR

Anodized Rotor Bell

A rigid outer bell rotates with the shaft around 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 propeller load.

05 / MOUNT

Four-Hole Mount

The 30 × 30mm base has exactly four M4 airframe mounting holes.

06 / LEADS

400mm 14 AWG Leads

Long silicone motor leads provide routing flexibility in large aircraft.

Exploded ECO II 5215 showing M6 shaft, full-height 14-pole magnet ring, 12-slot stator, precision bearing and four-hole 30 by 30 millimeter mount
04 / Mechanical Data

5215 geometry and installation details.

Motor model EMAX ECO II 5215
Framework 12N14P
Motor diameter Ø60.6mm
Overall length 65.7mm
Weight 341g with wire
Bearing shaft Ø6mm
Propeller shaft M6 CW thread
Mounting pattern 30 × 30mm, four M4 holes
Motor leads 400mm 14 AWG silicone wire
Propeller range 13–17 inches, KV-dependent
One platform, five power profiles.

The shared 5215 mechanical package lets builders select winding and voltage without changing the four-hole airframe interface.

The official drawing specifies 60.6mm diameter, 65.7mm overall length and a 30 × 30mm four-M4 mounting pattern.

Installation note: Confirm frame clearance, screw engagement, propeller retention, ESC headroom and cooling before operation.

EMAX ECO II 5215 12N14P motor platform for 13- to 17-inch FPV aircraft
05 / Electrical Specifications

KV-specific published limits.

Use the voltage and propeller range for the selected winding. Confirm ESC current capability and thermal headroom for the complete aircraft.

KV Cells Propeller Idle current Resistance Peak current Max power
230KV 8S–12S 17" 0.8A @ 10V 55mΩ 76.3A 3412W
260KV 8S–12S 15" 0.9A @ 10V 50mΩ 69.2A 3266W
300KV 8S–12S 13–17" 1.2A @ 10V 41mΩ 72.1A 3396W
360KV 8S–12S 13–17" 1.4A @ 10V 32mΩ 87.4A 3894W
420KV 6S–8S 13–15" 1.7A @ 10V 26mΩ 77.7A 2412W
06 / Bench Data

Maximum-throttle load-test highlights.

Expand a winding to view the maximum-throttle row from every propeller series in the official EMAX sheets.

230KV Load-Test Highlights17-inch / three propellers
Voltage Propeller Current Thrust Power Efficiency RPM
44.85V HQ1708, 3-blade 65.66A 9,131g 2944.85W 3.10g/W 8,381
44.71V GF1708, 3-blade 76.31A 9,320g 3411.82W 2.73g/W 7,911
44.54V 1708, 2-blade 66.92A 8,499g 2980.62W 2.85g/W 8,250
260KV Load-Test Highlights15-inch / two propellers
Voltage Propeller Current Thrust Power Efficiency RPM
47.21V HQ1507, 3-blade 69.18A 9,139g 3265.99W 2.80g/W 9,776
47.40V GF1507, 3-blade 56.00A 8,261g 2654.40W 3.11g/W 9,845
300KV Load-Test Highlights8S–12S / four propellers
Voltage Propeller Current Thrust Power Efficiency RPM
47.11V HQ1309, 3-blade 72.09A 7,994g 3396.16W 2.35g/W 11,598
47.23V 1507, 2-blade 65.15A 8,399g 3077.03W 2.73g/W 11,680
31.37V HQ1708, 3-blade 56.87A 7,425g 1784.01W 4.16g/W 7,554
31.29V GF1708, 3-blade 64.08A 7,956g 2005.06W 3.97g/W 7,377
360KV Load-Test Highlights8S–12S / four propellers
Voltage Propeller Current Thrust Power Efficiency RPM
44.56V HQ1308, 3-blade 87.39A 9,265g 3894.10W 2.38g/W 12,686
47.23V GF1308, 3-blade 68.97A 8,650g 3257.45W 2.66g/W 13,721
31.25V HQ1507, 3-blade 61.74A 7,113g 1929.38W 3.69g/W 8,749
30.94V HQ1708, 3-blade 83.66A 8,801g 2588.44W 3.40g/W 8,183
420KV Load-Test Highlights6S–8S / four propellers
Voltage Propeller Current Thrust Power Efficiency RPM
31.13V HQ1309, 3-blade 69.38A 6,417g 2159.80W 2.97g/W 10,277
31.03V GF1309, 3-blade 77.73A 7,469g 2411.96W 3.10g/W 10,049
31.22V 1507, 2-blade 64.20A 7,121g 2004.32W 3.55g/W 10,459
24.24V HQ1507, 3-blade 59.41A 5,940g 1440.10W 4.12g/W 7,961
EMAX ECO II 5215 motor package with four M4 by 12 millimeter screws and one steel M6 nylock nut
07 / In The Box

Motor and mounting hardware included.

1×EMAX ECO II 5215 brushless motor
4×M4 × 12mm mounting screws
1×Steel M6 nylock nut

Bench-test note: Performance figures are measured test data, not guaranteed aircraft-level performance. Current draw, thrust, efficiency, RPM and temperature vary with propeller, battery voltage and sag, ESC behavior, airflow, ambient conditions and test equipment. Select the winding, propeller, ESC, battery and cooling appropriate for the complete aircraft.
Product information

All parts are shipped fast from SYRACUSE, NEW YORK & some DROP SHIP ORDERS from San Diego, California. If there's an issue with something, please let us know and we will do our best make it right! SaltCtyRacingFPV, LLC dba "weBLEEDfpv.com" offers a (30) day return policy on all new unopened equipment, starting from the date the product(s) was delivered to the customer. Anything beyond (30) days of delivery will not be eligible for return. If the product(s) received have been opened, used or damaged, no return options will be offered. If the item is in brand new condition but requires to be repackaged, a (15%) restocking fee will be applied. The shipping cost for any unwanted product will not be refunded by SaltCtyRacingFPV "weBLEEDfpv.com" (It is recommended to choose a return shipping method with tracking).

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