BrotherHobby MAX 8120 Motor 100KV/130KV/150KV, 12S, 36N42P, Dia. 88.6x45mm, AWG14
BrotherHobby MAX 8120 Motor 100KV/130KV/150KV, 12S, 36N42P, Dia. 88.6x45mm, AWG14
BrotherHobby
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Overview
BrotherHobby MAX 8120 motor is offered in 100KV / 130KV / 150KV options for 12S LiPo power systems. The MAX 8120 uses an Al 7075 base casing and bell cap, 0.2mm Kawasaki silicon steel stator, SUS420 shaft, and an N52H arc magnet rotor in a 36N42P configuration.
Key Features
- Al 7075 caps/casing with hollow-carved design for weight saving and heat dissipation
- Two bearings designed to handle large axial loads
- Ultra-thin non-oriented silicon steel sheet stator material (high permeability, low eddy loss)
- TU1 grade enameled wire (high full slot ratio, low internal resistance)
- N52H arc magnet rotor (consistent air gap, stable magnetic circuit)
Specifications
Common (Series) Specifications
| KV | 100KV / 130KV / 150KV |
| No. of Cells (LiPo) | 12S |
| Configuration | 36N42P |
| Motor dimension | Dia. 88.6 x 45 mm |
| Stator height | 20 mm |
| Wire | 14#; 500 mm length |
| Base casing | Al 7075 |
| Bell cap | Al 7075 |
| Stator | 0.2mm Kawasaki silicon steel |
| Shaft | SUS420 |
| Rotor / Magnet | N52H arc magnet |
| Bolt pattern | M4 (40 x 40 mm) |
| Bearings | Dia. 22 x Dia. 8 |
| Mounting / Drawing notes | 4-M4, Dia. 40; 4-M3, Dia. 20; Dia. 10; 45 / 42.5 / 2.5 |
| Insulation resistance (test report) | >= 0.5 Mohm |
| Coil test (test report) | PASS |
100KV (MAX 8120) Test Report Specifications
| Stator dimension | 80.00 mm |
| Weight including cable | 629.00 g |
| Internal resistance | 81.46 mohm |
| Idle Current@10V | 1.35A/20V |
| ESC | 12S 60A |
| Propeller | 3010 carbon fiber straight propeller |
| Dynamic balance requirement standards | <= 6 mg |
| Max current (100% throttle @ 48V) | 52.8 A |
| Max power (100% throttle @ 48V) | 2534.4 W |
| RPM (100% throttle @ 48V) | 4095 RPM |
| Max thrust (100% throttle @ 48V) | 15130 g |
| Efficiency (100% throttle @ 48V) | 5.97 |
| Copper wire temperature (after 2 min @ 100% throttle) | 92 C (ambient 28 C) |
130KV (MAX 8120) Test Report Specifications
| Stator dimension | 81.00 mm |
| Weight including cable | 629.60 g |
| Internal resistance | 48.50 mohm |
| Idle Current@10V | 2.06A/20V |
| ESC | 12S 100A |
| Propeller | 2890 propeller |
| Propeller connector | Propeller Connector-12X15 |
| Dynamic balance requirement standards | <= 8 mg |
| Max current (100% throttle @ 48V) | 87.9 A |
| Max power (100% throttle @ 48V) | 4219.2 W |
| RPM (100% throttle @ 48V) | 4852 RPM |
| Max thrust (100% throttle @ 48V) | 18480 g |
| Efficiency (100% throttle @ 48V) | 4.38 |
| Copper wire temperature (after 2 min @ 100% throttle) | 98 C (ambient 28 C) |
150KV (MAX 8120) Test Report Specifications - 2480 Propeller
| Stator dimension | 81.00 mm |
| Weight including cable | 631.60 g |
| Internal resistance | 36.50 mohm |
| Idle Current@10V | 2.15A/20V |
| ESC | 12S 80A (test data summary) / 12S 800A (test report table) |
| Propeller | 2480 propeller |
| Propeller connector | Propeller Connector-12X15 |
| Dynamic balance requirement standards | <= 8 mg |
| Max current (100% throttle @ 48V) | 67.9 A |
| Max power (100% throttle @ 48V) | 3259.2 W |
| RPM (100% throttle @ 48V) | 6130 RPM |
| Max thrust (100% throttle @ 48V) | 14829 g |
| Efficiency (100% throttle @ 48V) | 4.55 |
| Copper wire temperature (after 2 min @ 100% throttle) | 89 C (ambient 28 C) |
150KV (MAX 8120) Test Report Specifications - 2685 Propeller
| Stator dimension | 81.00 mm |
| Weight including cable | 631.60 g |
| Internal resistance | 36.50 mohm |
| Idle Current@10V | 2.15A/20V |
| ESC | 12S 100A |
| Propeller | 2685 propeller |
| Propeller connector | Propeller Connector-12X15 |
| Dynamic balance requirement standards | <= 8 mg |
| Max current (100% throttle @ 48V) | 91.2 A |
| Max power (100% throttle @ 48V) | 4377.6 W |
| RPM (100% throttle @ 48V) | 5770 RPM |
| Max thrust (100% throttle @ 48V) | 18604 g (18.6 kg) |
| Efficiency (100% throttle @ 48V) | 4.25 |
| Copper wire temperature (after 2 min @ 100% throttle) | 103 C (ambient 28 C) |
Load Test Data (48V)
Temperature note: copper wire temperature is measured after running 2 minutes at 100% throttle; ambient temperature is 28 C.
100KV + 3010 Carbon Fiber Straight Propeller (12S)
| Throttle (%) | Voltage (V) | Current (A) | RPM | Thrust (gf) | Input Power (W) | Thrust efficiency (G/W) |
|---|---|---|---|---|---|---|
| 30 | 48.00 | 2.70 | 1477 | 1896.00 | 129.60 | 14.63 |
| 40 | 48.00 | 4.60 | 1852 | 2954.00 | 220.80 | 13.38 |
| 50 | 48.00 | 8.00 | 2273 | 4346.00 | 384.00 | 11.32 |
| 60 | 48.00 | 13.10 | 2664 | 6049.00 | 628.80 | 9.62 |
| 70 | 48.00 | 22.00 | 3117 | 8469.00 | 1056.00 | 8.02 |
| 80 | 48.00 | 31.20 | 3512 | 10513.00 | 1497.60 | 7.02 |
| 90 | 48.00 | 41.40 | 3824 | 12777.00 | 1987.20 | 6.43 |
| 100 | 48.00 | 52.80 | 4095 | 15130.00 | 2534.40 | 5.97 |
130KV + 2890 Propeller (12S)
| Throttle (%) | Voltage (V) | Current (A) | RPM | Thrust (gf) | Input Power (W) | Thrust efficiency (G/W) |
|---|---|---|---|---|---|---|
| 30 | 48.00 | 3.80 | 1741 | 2106.00 | 182.40 | 11.55 |
| 40 | 48.00 | 7.20 | 2230 | 3570.00 | 345.60 | 10.33 |
| 50 | 48.00 | 12.70 | 2747 | 5273.00 | 609.60 | 8.65 |
| 60 | 48.00 | 23.40 | 3290 | 7806.00 | 1123.20 | 6.95 |
| 70 | 48.00 | 34.10 | 3730 | 10049.00 | 1636.80 | 6.14 |
| 80 | 48.00 | 49.70 | 4187 | 12715.00 | 2385.60 | 5.33 |
| 90 | 48.00 | 66.10 | 4557 | 15134.00 | 3172.80 | 4.77 |
| 100 | 48.00 | 87.90 | 4853 | 18480.00 | 4219.20 | 4.38 |
150KV + 2480 Propeller (12S)
| Throttle (%) | Voltage (V) | Current (A) | RPM | Thrust (gf) | Input Power (W) | Thrust efficiency (G/W) |
|---|---|---|---|---|---|---|
| 30 | 48.00 | 3.30 | 2150 | 1680.00 | 158.40 | 10.61 |
| 40 | 48.00 | 6.00 | 2760 | 2759.00 | 288.00 | 9.58 |
| 50 | 48.00 | 11.60 | 3461 | 4426.00 | 556.80 | 7.95 |
| 60 | 48.00 | 18.30 | 4056 | 6104.00 | 878.40 | 6.95 |
| 70 | 48.00 | 26.80 | 4649 | 7949.00 | 1286.40 | 6.18 |
| 80 | 48.00 | 39.30 | 5160 | 10431.00 | 1886.40 | 5.53 |
| 90 | 48.00 | 53.40 | 5680 | 12713.00 | 2563.20 | 4.96 |
| 100 | 48.00 | 67.90 | 6130 | 14829.00 | 3259.20 | 4.55 |
150KV + 2685 Propeller (12S)
| Throttle (%) | Voltage (V) | Current (A) | RPM | Thrust (gf) | Input Power (W) | Thrust efficiency (G/W) |
|---|---|---|---|---|---|---|
| 30 | 48.00 | 4.30 | 2093 | 2072.00 | 206.40 | 10.04 |
| 40 | 48.00 | 7.50 | 2654 | 3319.00 | 360.00 | 9.22 |
| 50 | 48.00 | 15.20 | 3339 | 5515.00 | 729.60 | 7.56 |
| 60 | 48.00 | 24.40 | 3952 | 7847.00 | 1171.20 | 6.70 |
| 70 | 48.00 | 36.60 | 4429 | 10136.00 | 1756.80 | 5.77 |
| 80 | 48.00 | 51.80 | 4988 | 12929.00 | 2486.40 | 5.20 |
| 90 | 48.00 | 69.10 | 5330 | 15423.00 | 3316.80 | 4.65 |
| 100 | 48.00 | 91.20 | 5770 | 18604.00 | 4377.60 | 4.25 |
Applications
- Multi-rotor aircraft propulsion setups requiring 12S compatibility
- Systems using 3010 / 2890 / 2685 / 2480 propeller configurations (per test reports)
For compatibility questions (propeller selection, mounting pattern, ESC matching), contact support at https://rcdrone.top/ or support@rcdrone.top.
Details
The BrotherHobby MAX 8120 motor is offered in 100KV, 130KV, or 150KV versions, with an 88.6×45mm size and 14AWG 500mm leads noted on the spec callouts.
BrotherHobby MAX 8120 motor test data lists 48V full-throttle results for 100–150KV setups, including propeller, ESC, max thrust, current, RPM, power, and 2-minute temperatures.
BrotherHobby MAX 8120 motor is presented with a max thrust figure of 18.6 kg when paired with 2685 carbon fiber straight propellers.
The BrotherHobby MAX motor features a finned aluminum housing and a compact, low-profile design for durable builds.
The BrotherHobby MAX 8120 motor uses an aluminum housing with steel shaft, arc magnets, and a clearly laid out mounting pattern for easier installation.
BrotherHobby MAX 8120 100KV motor documentation includes key dimensions and a load test table using a 3010 carbon fiber straight propeller.
The MAX 8120 test report lists key dimensions, wiring details, and thrust/current results with a 28x90 propeller across throttle settings.
The BrotherHobby MAX 8120 motor spec sheet lists 150KV configuration details, key dimensions, and 2480 propeller thrust and efficiency test results.
BrotherHobby MAX 8120 motor documentation includes a dimensioned drawing and 26x8.5 propeller test data for thrust, current, and efficiency.
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