T-MOTOR Navigator MN705-S Multirotor & Fixed Wing UAV Motor KV140

T-MOTOR MN705-S is a high-performance brushless motor designed for demanding industrial applications. Featuring a robust, enclosed design with IP45 water resistance, it excels in harsh environments. Its advanced cooling system, including a centrifugal fan and optimized heat dissipation, ensures reliable operation under heavy loads. With a maximum thrust of 13.4kg and a long MTBF, the MN705-S is the ideal choice for a wide range of UAV applications, from aerial photography to heavy-lift operations.

Navigator MN705-S Highlights:

• Max thrust: 13.4kg
• MTBF: About 1000 hours
• Features: Excellent cooling performance; Dust-resistance/Waterproof/Anti-corrosion; Heavy Payload Long Flight Time

“Navigator” motors are for general uses like aerial photography and are suitable for multirotors, VTOL, and fixed-wing drones.

Application Areas:

Cargo Drones, Tethered, Mapping, and Inspection

Packing List Includes:

• 1x T-MOTOR MN705 Motor KV140 (kv as chosen)
• 1x Hardware pack

Specification

Motor Size	79.2*42.4mm	Copper Wire	220 high temperature resistance: Level C
Stator	Imported silicon steel sheet; Anti-rust treatment; 180C high temperature-resisting coatings	Coil Insulation Test	500V
Configuration	24N28P	Centrifugal Cooling Design	YES
Shaft Diameter	IN8mmOUT8mm	Rotor Dynamic Balance Standard	5Mg
Bearing	Imported 608ZZ	Motor Dynamic Balance Standard	10Mg
Magnet Level	150 high temperature resistance	IP	IP45
Lead Cable	14AWG*150mm

KV125 Specification (Example)

KV	125	Rated Voltage (Lipo)	12S
Idle Current (22V)	1.4A	ESC Recommendation	FLAME 60A 12S / FLAME 80A 12S V2.0
Peak Current (180s)	45A	Propeller Recommendation	26-27″
Max Power (180s)	2200W	Motor Weight (incl. Cable)	450g
Internal Resistance	63m	Package Weight	1250g (2PCS/SET)

Test Data Example (MN705S KV140)

Throttle	Voltage (V)	Thrust (g)	Torque (N*m)	Current (A)	RPM	Power (W)	Efficiency (g/W)	Operating Temp ()
40%	47.91	2427	0.75	4.76	2221	228	10.64	96
50%	47.86	3416	1.07	7.63	2630	365	9.36	96
75%	47.56	7374	2.29	22.76	3835	1082	6.81	96
100%	47.12	12225	4.25	55.40	4720	2603	5.17	96