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T-MOTOR MN705-S KV140 UAV motor

By T-MOTOR ↗

The T-MOTOR MN705-S KV140 is a UAV propulsion motor.

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T-MOTOR MN705-S KV140 UAV motor with silver housing and orange wires
T-MOTOR MN705-S KV140 UAV motor with silver housing and orange wires
Rated supply12S LiPoMN705-S KV140 variant
Recommended electronic speed controllersFLAME 80A 12S V2.0; FLAME 100A 14SManufacturer recommendations for the KV140 variant
ModelT-MOTOR MN705-S KV140 UAV motor
Motor dimensionsΦ79.2 × 42.4 mm
Winding wire insulationClass C; heat resistance 220℃
StatorImported silicon steel laminations; rust protection; coating resistant to 180℃

Product overview

The MN705-S belongs to T-MOTOR's Navigator motor range, intended for multirotor, VTOL and fixed-wing aircraft.

The KV140 variant specifies a 12S LiPo supply and recommends FLAME 80A 12S V2.0 or FLAME 100A 14S electronic speed controllers.

Specifications

SpecificationValue & conditions
Rated supply12S LiPoMN705-S KV140 variant
Recommended electronic speed controllersFLAME 80A 12S V2.0; FLAME 100A 14SManufacturer recommendations for the KV140 variant
ModelT-MOTOR MN705-S KV140 UAV motor
Motor dimensionsΦ79.2 × 42.4 mm
Winding wire insulationClass C; heat resistance 220℃
StatorImported silicon steel laminations; rust protection; coating resistant to 180℃
Winding insulation test500 V withstand-voltage test
Slots and poles24N28P
Centrifugal coolingYes
Shaft diameterIN: 8 mm; OUT: 8 mm
Rotor dynamic balance standard≤5Mg
BearingsImported 608ZZ bearings
Complete motor dynamic balance standard≤10Mg
Magnet heat resistance150℃
Ingress protectionIP45
Silicone wire specification14 AWG × 150 mm
KV rating140
Rated operating voltage12SLiPo battery; KV140 configuration
No-load current1.5 A22 V; KV140 configuration
Recommended ESCFLAME 80A 12S V2.0; FLAME 100A 14SKV140 configuration
Maximum current58 A180 s; KV140 configuration
Recommended propeller size26–27 inchesKV140 configuration
Maximum continuous power561 W180 s; KV140 configuration
Motor weight475 gIncluding wires; KV140 configuration
Phase-to-phase resistance45 mΩKV140 configuration
Package weight700 gSingle-motor package; KV140 configuration
Performance at 40% throttle
  • Voltage: 47.91 V;
  • thrust: 2427 g;
  • torque: 0.75 N·m;
  • current: 4.76 A;
  • rotational speed: 2221;
  • power: 228 W;
  • thrust efficiency: 10.64 g/W
MN705S KV140; T-MOTOR G26*8.5 propeller; 40% throttle; ambient 5℃; 2017 test platform; reference only; not comparable with older data for other models
Performance at 100% throttle
  • Voltage: 47.12 V;
  • thrust: 12225 g;
  • torque: 3.72 N·m;
  • current: 48.48 A;
  • rotational speed: 4860;
  • power: 2284 W;
  • thrust efficiency: 5.35 g/W
MN705S KV140; T-MOTOR G26*8.5 propeller; 100% throttle; ambient 5℃; 2017 test platform; reference only; not comparable with older data for other models
Performance at 40% throttle
  • Voltage: 47.87 V;
  • thrust: 2757 g;
  • torque: 0.88 N·m;
  • current: 5.33 A;
  • rotational speed: 2195;
  • power: 255 W;
  • thrust efficiency: 10.80 g/W
MN705S KV140; T-MOTOR G27*8.8 propeller; 40% throttle; ambient 5℃; 2017 test platform; reference only; not comparable with older data for other models
Performance at 100% throttle
  • Voltage: 46.98 V;
  • thrust: 13459 g;
  • torque: 4.25 N·m;
  • current: 55.40 A;
  • rotational speed: 4720;
  • power: 2603 W;
  • thrust efficiency: 5.17 g/W
MN705S KV140; T-MOTOR G27*8.8 propeller; 100% throttle; ambient 5℃; 2017 test platform; reference only; not comparable with older data for other models
Motor temperature96℃MN705S KV140; T-MOTOR G26*8.5 propeller; 100% throttle for 10 minutes; ambient 5℃; 2017 test platform; reference only; not comparable with older data for other models
Motor temperature indicationHOTMN705S KV140; T-MOTOR G27*8.8 propeller; 100% throttle for 10 minutes; ambient 5℃; 2017 test platform; reference only; not comparable with older data for other models
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