BrotherHobby Special Edition V4 32.5-15 665KV CW Brushless Motor (8S, 12N14P, M5, 121g)
BrotherHobby Special Edition V4 32.5-15 665KV CW Brushless Motor (8S, 12N14P, M5, 121g)
BrotherHobby
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Overview
BrotherHobby Special Edition V4 32.5-15 665KV Motor (CW) is a brushless motor designed for 8S setups, featuring a 12N14P configuration, M5 prop adapter shaft thread, and M3 19x19 mm mounting pattern.
Key Features
- Aviation grade 7075 aluminum caps (hard anodized); hollow-carved design for weight saving and heat dissipation.
- Titanium alloy hollow shaft.
- N52H arc magnets with consistent air gap and stable magnetic circuit.
- TU1 grade enameled wire with high full slot ratio and low internal resistance.
- Premium/Japanese NMB bearings (12x6x4), designed to withstand greater axial load.
- Ultra-thin non-oriented silicon steel sheet / 0.2 mm Kawasaki silicon steel stator.
For build compatibility questions (prop/ESC matching, mounting, wiring), contact https://rcdrone.top/ or support@rcdrone.top.
Specifications
| Model | Special Edition V4 32.5-15 |
| KV (series) | 520KV / 580KV / 665KV |
| Listed variant | 665KV, CW (clockwise) |
| No. of Cells (LiPo) | 8S |
| Configuration | 12N14P |
| Stator | 0.2 mm Kawasaki silicon steel |
| Rotor / Magnet | N52H arc magnets |
| Base casing | Al 7075 |
| Bell cap | Al 7075 |
| Shaft | Titanium alloy hollow shaft |
| Prop adapter shaft thread | M5 |
| Bolt pattern | M3 (19x19 mm) |
| Bearings | Japanese NMB 12x6x4 |
| Wire | 16#, 30 cm length |
| Weight | 121 g with 30 cm SR wires |
| Drawing dimensions | Motor dimension: Dia. 38.2 x 48.7 mm; center/boss: Dia. 14.2; mounting reference: Dia. 19; thread: M5; holes: 4-M3; length references: 18, 12 |
Propeller Notes (as stated)
Propeller: HQ 12x7.5x3 / HQ 10x5x3 / GF 11x7x3
Performance / Test Report Data (8S reference)
Test notes stated: Voltage 33.60 V; temperature is motor inside copper wire temperature after running 2 minutes at 100% throttle; ambient temperature 26C; bench data for reference only.
665KV (8S) — HQ 10x5x3 Glass Fiber Nylon, ESC 8S 80A
| Weight Including Cable | 121.60 g |
| Internal Resistance | 55.50 mΩ |
| Max power | 1989.12 W |
| Max Current | 59.20 A |
| Idle Current@10V | 1.64A/10V |
| Insulation Resistance | >= 0.5 MΩ |
| Coil Test | PASS |
| Max Thrust (stated) | 5231 g |
| RPM at 100% (stated) | 15378 RPM |
| Thrust efficiency at 100% (stated) | 2.63 |
| Copper wire temperature (stated) | 75C (ambient 26C) |
| Throttle (%) | Voltage (V) | Current (A) | RPM | Thrust (gf) | Input Power (W) | Thrust efficiency (G/W) |
|---|---|---|---|---|---|---|
| 30 | 33.60 | 5.40 | 7033 | 988.00 | 181.44 | 5.45 |
| 40 | 33.60 | 9.00 | 8528 | 1436.00 | 302.40 | 4.75 |
| 50 | 33.60 | 15.10 | 10245 | 2125.00 | 507.36 | 4.19 |
| 60 | 33.60 | 22.30 | 11725 | 2817.00 | 749.28 | 3.76 |
| 70 | 33.60 | 33.00 | 13093 | 3703.00 | 1108.80 | 3.34 |
| 80 | 33.60 | 44.50 | 14582 | 4560.00 | 1495.20 | 3.05 |
| 90 | 33.60 | 54.20 | 15267 | 5062.00 | 1821.12 | 2.78 |
| 100 | 33.60 | 59.20 | 15378 | 5231.00 | 1989.12 | 2.63 |
520KV (8S reference) — HQ 12x7.5x3 Glass Fiber Nylon, ESC 8S 60A
| Weight Including Cable | 120.80 g |
| Internal Resistance | 86.60 mΩ |
| Max power | 1831.20 W |
| Max Current | 54.50 A |
| Idle Current@10V | 1.41A/10V |
| Insulation Resistance | >= 0.5 MΩ |
| Coil Test | PASS |
| Max Thrust (stated) | 5493 g |
| RPM at 100% (stated) | 10855 RPM |
| Thrust efficiency at 100% (stated) | 3.00 |
| Copper wire temperature (stated) | 96C (ambient 26C) |
| Throttle (%) | Voltage (V) | Current (A) | RPM | Thrust (gf) | Input Power (W) | Thrust efficiency (G/W) |
|---|---|---|---|---|---|---|
| 30 | 33.60 | 4.70 | 5014 | 1059.00 | 157.92 | 6.71 |
| 40 | 33.60 | 8.80 | 6237 | 1671.00 | 295.68 | 5.65 |
| 50 | 33.60 | 14.30 | 7444 | 2436.00 | 480.48 | 5.07 |
| 60 | 33.60 | 23.60 | 8339 | 3155.00 | 792.96 | 3.98 |
| 70 | 33.60 | 32.90 | 9236 | 3880.00 | 1105.44 | 3.51 |
| 80 | 33.60 | 44.20 | 10225 | 4797.00 | 1485.12 | 3.23 |
| 90 | 33.60 | 51.70 | 10632 | 5263.00 | 1737.12 | 3.03 |
| 100 | 33.60 | 54.50 | 10855 | 5493.00 | 1831.20 | 3.00 |
580KV (8S reference) — GF 11x7x3 Glass Fiber Nylon, ESC 8S 60A
| Weight Including Cable | 121.10 g |
| Internal Resistance | 71.50 mΩ |
| Max power | 1821.12 W |
| Max Current | 54.20 A |
| Idle Current@10V | 1.36A/10V |
| Insulation Resistance | >= 0.5 MΩ |
| Coil Test | PASS |
| Max Thrust (stated) | 5390 g |
| RPM at 100% (stated) | 13049 RPM |
| Thrust efficiency at 100% (stated) | 2.96 |
| Copper wire temperature (stated) | 58C (ambient 26C) |
| Throttle (%) | Voltage (V) | Current (A) | RPM | Thrust (gf) | Input Power (W) | Thrust efficiency (G/W) |
|---|---|---|---|---|---|---|
| 30 | 33.60 | 4.10 | 5689 | 935.00 | 137.76 | 6.79 |
| 40 | 33.60 | 7.40 | 6949 | 1437.00 | 248.64 | 5.78 |
| 50 | 33.60 | 13.90 | 8381 | 2237.00 | 467.04 | 4.79 |
| 60 | 33.60 | 22.60 | 10108 | 3143.00 | 759.36 | 4.14 |
| 70 | 33.60 | 32.10 | 11073 | 3785.00 | 1078.56 | 3.51 |
| 80 | 33.60 | 40.60 | 12017 | 4501.00 | 1364.16 | 3.30 |
| 90 | 33.60 | 48.80 | 12795 | 5214.00 | 1639.68 | 3.18 |
| 100 | 33.60 | 54.20 | 13049 | 5390.00 | 1821.12 | 2.96 |
Additional Notes (as stated)
- “Greater pulling force, more loads. Higher efficiency and longer flight time.”
- “The thrust of single motor is as high as 5.5kg.”
- “121g Ultra-lightweight design.”
Details
The BrotherHobby Special Edition V4 32.5-15 665KV motor features a black can with clear KV labeling and a threaded output shaft for secure mounting.
BrotherHobby Special Edition V4 665KV motor is listed at 121g and rated for up to 5.5kg maximum pull force per motor.
At 100% throttle on 8S (33.6V) with an HQ 10x5x3 prop, the Special Edition V4 32515 665KV motor reaches 5231g max thrust at 59.2A and 15,378 RPM.
BrotherHobby Special Edition V4 32.5-15 665KV CW motor uses anodized 7075 aluminum caps, NMB bearings, and a titanium alloy shaft for a durable build.
BrotherHobby Special Edition V4 32.5-15 665KV brushless motor includes mounting screws and hardware for installation.
The V4 32.5-15 665KV motor uses an M5 shaft and 4×M3 mounting pattern, with labeled components like NMB bearings and N52H arc magnets.
The BrotherHobby Special Edition V4 32515 includes a detailed dimension drawing and load test data (8S, HQ 12x7.5x3) to help with fitment and setup planning.
The BrotherHobby V4 32515 580KV 8S motor sheet lists key dimensions plus load-test figures like thrust, power, current, and prop sizes.
Special Edition V4 32.5-15 665KV motor documentation lists 8S specs, dimensions, and HQ 10x5x3 prop load test thrust and power data.
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