Flashhobby Mars 2812 900KV BLDC Motor, 34.3x27mm, 12N/14P, 5mm Shaft, 3-6S LiPo
Flashhobby Mars 2812 900KV BLDC Motor, 34.3x27mm, 12N/14P, 5mm Shaft, 3-6S LiPo
Flashhobby
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Overview
Flashhobby Mars 2812 KV900 is a BLDC motor with a 12N/14P configuration, 5.0 mm shaft, and support for 3–6S LiPo setups. It uses a die-casting molding shell, a high-strength steel shaft, and domestic bearing.
Key Features
- KV900 rating
- Domestic bearing
- Die-casting molding shell
- High-strength steel shaft
- 12N/14P configuration
Specifications
| Model | Mars 2812 |
| KV | KV900 |
| Weight | 76.8 g (incl cable) |
| Motor size | φ34.3 x 27 mm |
| Phase resistance | 0.091 Ω |
| Configuration | 12N/14P |
| Shaft diameter | 5.0 mm |
| Lead wire | 18 AWG, 230 mm, black silicone wire |
| Rated voltage (LiPo) | 3–6S |
| No-load current | 1.2 A / 16 V |
| Rated power | 275 W |
| Max current (60 s) | 42.91 A |
| Max power | 1063 W |
| Max thrust | 2657 g |
| Prop mounting | 4 x M3*8 |
Motor Outline Dimensions
| Body diameter | φ34.3 |
| Overall length (drawing) | 42 |
| Length segments (drawing) | 27 / 15 |
| Shaft protrusion (drawing) | 9 |
| Thread (drawing) | M6 |
| Mounting note (drawing) | φ19, 4-M3 |
| Wire length (drawing) | 230 mm |
| Wire spec (drawing) | 18 AWG (BLACK) |
Performance Test Data (M2812-900KV)
Prop: FH8040 (Operating temperature: 39.7°C)
| Throttle | Volts (V) | Amps (A) | Watts (W) | Revolution (RPM) | Thrust (g) | Efficiency (g/W) |
|---|---|---|---|---|---|---|
| 50% | 25.36 | 6.81 | 172.6 | 9041 | 829 | 4.80 |
| 60% | 25.33 | 10.90 | 276.0 | 10515 | 1161 | 4.21 |
| 70% | 25.28 | 16.22 | 410.0 | 11901 | 1523 | 3.71 |
| 80% | 25.22 | 22.31 | 562.7 | 13145 | 1871 | 3.32 |
| 90% | 25.15 | 29.40 | 739.3 | 14183 | 2181 | 2.95 |
| 100% | 25.08 | 36.85 | 924.2 | 15053 | 2492 | 2.70 |
Prop: GF8040 (Operating temperature: 41.9°C)
| Throttle | Volts (V) | Amps (A) | Watts (W) | Revolution (RPM) | Thrust (g) | Efficiency (g/W) |
|---|---|---|---|---|---|---|
| 50% | 25.38 | 5.45 | 138.3 | 9378 | 700 | 5.06 |
| 60% | 25.35 | 8.85 | 224.3 | 10995 | 992 | 4.42 |
| 70% | 25.31 | 13.08 | 331.0 | 12590 | 1306 | 3.95 |
| 80% | 25.26 | 18.25 | 461.1 | 13969 | 1629 | 3.53 |
| 90% | 25.20 | 24.25 | 611.2 | 15183 | 1980 | 3.24 |
| 100% | 25.14 | 31.17 | 783.7 | 16284 | 2321 | 2.96 |
Prop: HQ8040 (Operating temperature: 38.6°C)
| Throttle | Volts (V) | Amps (A) | Watts (W) | Revolution (RPM) | Thrust (g) | Efficiency (g/W) |
|---|---|---|---|---|---|---|
| 50% | 25.39 | 5.00 | 126.9 | 9515 | 640 | 5.04 |
| 60% | 25.36 | 8.08 | 205.0 | 11185 | 917 | 4.47 |
| 70% | 25.32 | 11.99 | 303.6 | 12824 | 1224 | 4.03 |
| 80% | 25.27 | 16.63 | 420.3 | 14277 | 1541 | 3.67 |
| 90% | 25.15 | 22.13 | 556.6 | 15468 | 1784 | 3.21 |
| 100% | 25.16 | 28.57 | 718.8 | 16804 | 2191 | 3.05 |
Prop: GF9045 (Operating temperature: 49.4°C)
| Throttle | Volts (V) | Amps (A) | Watts (W) | Revolution (RPM) | Thrust (g) | Efficiency (g/W) |
|---|---|---|---|---|---|---|
| 50% | 25.11 | 7.76 | 194.7 | 8670 | 916 | 4.70 |
| 60% | 25.07 | 12.10 | 303.4 | 10021 | 1277 | 4.21 |
| 70% | 25.02 | 17.66 | 441.9 | 11243 | 1644 | 3.72 |
| 80% | 24.95 | 24.25 | 605.0 | 12290 | 2004 | 3.31 |
| 90% | 24.89 | 31.37 | 780.7 | 13181 | 2299 | 2.94 |
| 100% | 24.82 | 38.84 | 964.0 | 13853 | 2561 | 2.66 |
Prop: HQ9050 (Operating temperature: 44.5°C)
| Throttle | Volts (V) | Amps (A) | Watts (W) | Revolution (RPM) | Thrust (g) | Efficiency (g/W) |
|---|---|---|---|---|---|---|
| 50% | 25.10 | 8.95 | 224.7 | 8373 | 1034 | 4.60 |
| 60% | 25.06 | 14.05 | 351.9 | 9594 | 1433 | 4.07 |
| 70% | 25.00 | 20.57 | 514.2 | 10661 | 1809 | 3.52 |
| 80% | 24.94 | 28.00 | 698.2 | 11533 | 2156 | 3.09 |
| 90% | 24.86 | 35.51 | 882.7 | 12148 | 2437 | 2.76 |
| 100% | 24.79 | 42.92 | 1063.9 | 12617 | 2657 | 2.50 |
Test note: temperature is measured on the motor surface at 100% throttle after 15 s of runtime; ambient temperature 26°C.
For pre-purchase compatibility questions (ESC, prop size, battery voltage) or bulk orders, contact support@rcdrone.top or visit https://rcdrone.top/.
Details
The Mars 2812 motor uses a Ø34.3mm x 42mm can with an M5 shaft and 230mm 12AWG black leads for straightforward wiring.
The Mars 2812 900KV brushless motor features a compact green aluminum housing with a threaded output shaft for secure mounting.
Flashhobby Mars M2812 900KV brushless motor features an open bell design with a protruding threaded shaft for prop mounting.
The Flashhobby Mars 2812 900KV brushless motor features an open bell design with visible copper windings and a threaded 5mm shaft.
The Flashhobby Mars 2812 900KV brushless motor features an open stator design with copper windings and pre-attached power leads for easy wiring.
The Mars 2812 brushless motor weighs about 77 g with its lead wires, helping keep builds compact.
The M2812 900KV motor is rated for 3–6S LiPo use and uses a 12N/14P design with a 34.3×27mm body and 5mm shaft.
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