Extreme RC T1-3120 700KV Brushless Motor

The Extreme RC T1-3120 is a 700KV brushless motor for cinelifters, X8 heavy-lift rigs and other large multirotors spinning 10-11 inch props. The maker's bench tests ran it at roughly 25-26 V and 32-33 V, which puts it in 6S and 8S builds.

Key features

• 12N14P configuration with N52SH curved magnets

• Kawasaki 0.2 mm stator laminations, wound with 220-degree high-temperature enamelled wire

• 5 mm shaft in 304 stainless steel, running on 5x11x5 mm bearings

• Low 58 milliohm internal resistance

• 18AWG silicone leads, 250 mm long

Specifications

• KV: 700

• Configuration: 12N14P

• Shaft diameter: 5 mm (304 stainless steel)

• Bearings: 5x11x5 mm

• Magnets: N52SH curved

• Stator laminations: Kawasaki 0.2 mm

• Internal resistance: 58 milliohm

• Leads: 18AWG, 250 mm

• Weight: 131.5 g (excluding leads)

• Max thrust (maker test, about 25 V): 3680 g on GF 1050-3 at 46.2 A

• Max thrust (maker test, about 32 V): 5080 g on GF 1050-3 at 65 A

For efficient cruising, the maker measured about 17 g/W at 20% throttle on a GF 1045-3 at 26 V, dropping to 3.4 g/W at full throttle. Full-throttle current reached 65 A at the higher voltage, so choose ESCs with that much headroom per motor.