BrotherHobby SE 3115 900KV Motor (CW) - 6S 12N14P, M5 Thread, 125.2g, HQ 9x5x3 Test Data
BrotherHobby SE 3115 900KV Motor (CW) - 6S 12N14P, M5 Thread, 125.2g, HQ 9x5x3 Test Data
BrotherHobby
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Overview
BrotherHobby SE 3115 900KV Motor (CW) is a 6S-capable RC motor designed for strong pulling force and efficient operation, with a 12N14P configuration, M5 prop adapter shaft thread, and 19 x 19 mm M3 mounting pattern. Test data is provided for HQ 9x5x3 propeller setups, with a recorded maximum thrust of 3784 gf at 24.60 V.
Key Features
- CW (clockwise) motor: SE 3115 900KV
- 12N14P configuration
- SUS420 heat-treated steel shaft
- Al 7075 base casing and Al 7075 bell cap (hard anodized caps noted)
- N52H arc magnets rotor / stable magnetic circuit and linear torque (noted)
- Japanese NMB bearings (12 x 6 x 4)
- TU1 grade enameled wire noted; 16# wire, 300 mm length
- Ultra-thin non-oriented silicon steel sheet noted; stator specified as 0.2 mm Nippon steel silicon steel
For motor/prop compatibility questions or support, contact support@rcdrone.top or visit https://rcdrone.top/.
Specifications
| Item | Value |
|---|---|
| Model | SE 3115 |
| KV | 900KV |
| Rotation | CW |
| Configuration | 12N14P |
| No. of Cells (LiPo) | 6S |
| Base casing | Al 7075 |
| Bell cap | Al 7075 |
| Shaft | SUS420 |
| Prop adapter shaft thread | M5 |
| Bolt pattern | M3 (19 x 19 mm) |
| Bearings | Japanese NMB 12 x 6 x 4 |
| Rotor / Magnet | N52H arc magnets |
| Stator material | 0.2 mm Nippon steel silicon steel |
| Stator dimension (mm) | 31.00 |
| Stator height (mm) | 15 (Nippon Steel 1500# 0.2MM) |
| Motor dimension (mm) | Phi37.5 x 46.75 |
| Wire AWG | 16# 300 mm length |
| Weight | 125.2 g |
| Weight including cable (g) | 125.20 |
| Internal resistance (mΩ) | 42.00 |
| Idle current @ 10 V (A) | 1.68A/10V |
| Max current (A) | 64.90 |
| Max power (W) | 1596.54 |
| Insulation resistance | >= 0.5MΩ |
| Dynamic balance requirement standards | <= 3mg |
| Coil test | PASS |
Drawing Dimensions
| Item | Value |
|---|---|
| Motor outer diameter | Phi37.50 |
| Overall length | 46.75 mm |
| Body length | 38.80 mm |
| Dimension | 16 mm |
| Mounting pattern | 4 x M3 |
| Mounting reference diameter | Phi19 |
| Shaft thread | M5 |
| Thread length | 9.50 mm |
Performance (Prop Test Report)
- Propeller: HQ 9x5x3
- ESC (test setup): 6S 65A
- Maximum thrust recorded: 3784 gf (approx. 3.8 kg) at 100% throttle
- Voltage at 100% throttle: 24.60 V
- Thrust efficiency at 100% throttle: 2.37 g/W
- Copper wire temperature noted: 81°C (ambient temperature 26°C); temperature noted as motor inside copper wire temperature running 2 MIN at 100% throttle
| Prop (inch) | Throttle (%) | Voltage (V) | Current (A) | RPM | Thrust (gf) | Input Power (W) | Thrust efficiency (g/W) |
|---|---|---|---|---|---|---|---|
| HQ 9x5x3 | 30 | 25.20 | 1.80 | 4616 | 265.00 | 45.36 | 5.84 |
| HQ 9x5x3 | 40 | 25.20 | 7.50 | 7781 | 835.00 | 189.00 | 4.42 |
| HQ 9x5x3 | 50 | 25.20 | 13.20 | 9697 | 1321.00 | 332.64 | 3.97 |
| HQ 9x5x3 | 60 | 25.10 | 23.90 | 11748 | 1987.00 | 599.89 | 3.31 |
| HQ 9x5x3 | 70 | 25.00 | 40.50 | 13645 | 2838.00 | 1012.50 | 2.80 |
| HQ 9x5x3 | 80 | 24.80 | 52.00 | 14632 | 3249.00 | 1289.60 | 2.52 |
| HQ 9x5x3 | 90 | 24.80 | 61.70 | 15412 | 3656.00 | 1530.16 | 2.39 |
| HQ 9x5x3 | 100 | 24.60 | 64.90 | 15569 | 3784.00 | 1596.54 | 2.37 |
Remark: Test bench data is provided for reference only (noted as based on 2022 BrotherHobby bench).
What’s Included
- 3115 motor x1
- M3 x 8 screw x4
- M5 flange nut x1
Applications
- 6S builds using HQ 9x5x3 or similar 9-inch propeller setups
Details
The BrotherHobby SE 3115 900KV motor features a threaded shaft and open stator design for straightforward prop installation.
BrotherHobby SE 3115 900KV motor is listed at 125.2g with up to 3784g thrust (HQ 9x5x3 prop, 6S 24.6V, 65A ESC) and 1596.54W max power.
BrotherHobby SE 3115 900KV motor features a compact black can design with a threaded shaft for secure prop mounting.
BrotherHobby SE 3115 900KV motor uses a steel shaft, aluminum caps, and includes a dimensioned SE 3115 drawing for fit checks.
The BrotherHobby SE 3115 motor includes four M3×8 screws and an M5 flange nut for straightforward mounting.
BrotherHobby SE3115 900KV motor documentation includes a dimension drawing and a 6S HQ 9x5x3 prop test table with thrust and current data.
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