BrotherHobby SE 3115 900KV Motor (CW) – 6S 12N14P, M5 Thread, 125.2g, HQ 9x5x3 Test Data

Description

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 [email protected] 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 (m)	42.00
Idle current @ 10 V (A)	1.68A/10V
Max current (A)	64.90
Max power (W)	1596.54
Insulation resistance	>= 0.5M
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: 81C (ambient temperature 26C); 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).

Whats 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 M38 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.