FlashHobby A1204

The FlashHobby A1204 is a three-phase outrunner brushless DC motor for 2–3 inch propeller applications. Weighing 6g including cables, it features a 7075-T6 aluminum bell, an NSK bearing and 0.15mm silicon steel sheet. KV options include 2500KV, 3100KV, 5200KV and custom KV.

FlashHobbyDrone motor

KV options: 2500 KV, 3100 KV, 5200 KV or custom KV
Weight: 6 g
Operating voltage: A1204-3100 KV: DC7.4-15 V(2-4S); A1204-5200 KV: DC7.4-12 V(2-3S)

Product overview

The FlashHobby A1204 Brushless DC Motor is a three-phase outrunner recommended for 2–3 inch propeller applications. It weighs 6g including cables and measures 15.7x10.8mm. Its 9N12P configuration combines a 12mm-diameter, 4mm-high stator with a 2.0mm shaft and a 9*9mm(M2*4) motor mount. Construction includes an NSK bearing, a 7075-T6 aluminum bell and 0.15mm silicon steel sheet from Kawasaki, Japan. The motor cable is 26#AWG and 115mm long.

The A1204 offers 2500KV, 3100KV and 5200KV options, plus custom KV. The 3100KV variant operates at DC7.4–15V with 2–4S batteries, while the 5200KV variant operates at DC7.4–12V with 2–3S batteries. Control uses an ESC with a PWM adjustment range of 900–2100US, and the working temperature range is -0°C to +80°C. Each package contains one FlashHobby motor, four M2X5mm fasteners and eight M2X7mm fasteners.

Motors & ESCs

Specifications

FlashHobby A1204 specifications
Specification	Value & conditions
Product	FlashHobby A1204 Brushless DC Motor
Weight	6gIncluding the cables.
Motor size	15.7x10.8mm
Stator dimensions	Diameter: 12mm; height: 4mm
Shaft diameter	2.0mm
Motor mount	99mm(M24)
Configuration	9N12P
Motor cable	26#AWG 115mm
Bearing	NSK bearing
Bell material	7075-T6 aluminum
Silicon steel sheet	0.15mm silicon steel sheet from Kawasaki, Japan
KV options	2500KV, 3100KV, 5200KV or custom KV
Recommended propeller application	2~3 inch propellers
Operating voltage	A1204-3100KV: DC7.4-15V(2-4S); A1204-5200KV: DC7.4-12V(2-3S)A1204-3100KV and A1204-5200KV variants, respectively.
Motor type, control and working temperature	Three-phase outrunner brushless motor; PWM adjustment range: 900-2100US; working temperature: -0°C~+80°CESC control with PWM adjustment.
Package contents	1 FlashHobby motor, 4 × M2X5mm and 8 × M2X7mm fastenersIncluded equipment.
Performance at 60% throttle, 3028 propeller	Voltage: 14.86V; current: 1.08A; power: 16.0W; thrust: 88g; efficiency: 5.48g/W A1204 2500KV; 3028 propeller; 60% throttle.
Performance at 70% throttle, 3028 propeller	Voltage: 14.84V; current: 1.89A; power: 28.0W; thrust: 115g; efficiency: 4.10g/W A1204 2500KV; 3028 propeller; 70% throttle.
Performance at 80% throttle, 3028 propeller	Voltage: 14.86V; current: 2.57A; power: 38.2W; thrust: 144g; efficiency: 3.77g/W A1204 2500KV; 3028 propeller; 80% throttle.
Performance at 90% throttle, 3028 propeller	Voltage: 14.81V; current: 3.24A; power: 48.0W; thrust: 166g; efficiency: 3.46g/W A1204 2500KV; 3028 propeller; 90% throttle.
Performance at 100% throttle, 3028 propeller	Voltage: 14.81V; current: 3.18A; power: 47.1W; thrust: 164g; efficiency: 3.48g/W A1204 2500KV; 3028 propeller; 100% throttle.
Performance at 60% throttle, 2540 propeller	Voltage: 14.81V; current: 0.81A; power: 12.0W; thrust: 63g; efficiency: 5.25g/W A1204 2500KV; 2540 propeller; 60% throttle.
Performance at 70% throttle, 2540 propeller	Voltage: 14.81V; current: 1.35A; power: 20.0W; thrust: 82g; efficiency: 4.10g/W A1204 2500KV; 2540 propeller; 70% throttle.
Performance at 80% throttle, 2540 propeller	Voltage: 14.78V; current: 1.89A; power: 27.9W; thrust: 106g; efficiency: 3.79g/W A1204 2500KV; 2540 propeller; 80% throttle.
Performance at 90% throttle, 2540 propeller	Voltage: 14.75V; current: 2.43A; power: 35.8W; thrust: 124g; efficiency: 3.46g/W A1204 2500KV; 2540 propeller; 90% throttle.
Performance at 100% throttle, 2540 propeller	Voltage: 14.75V; current: 2.43A; power: 35.8W; thrust: 124g; efficiency: 3.46g/W A1204 2500KV; 2540 propeller; 100% throttle.
Performance at 60% throttle, GF3028 propeller	Voltage: 14.95V; current: 2.16A; power: 32.3W; thrust: 122g; efficiency: 3.78g/W A1204 3100KV; GF3028 propeller; 60% throttle.
Performance at 70% throttle, GF3028 propeller	Voltage: 14.97V; current: 3.24A; power: 48.5W; thrust: 157g; efficiency: 3.24g/W A1204 3100KV; GF3028 propeller; 70% throttle.
Performance at 80% throttle, GF3028 propeller	Voltage: 14.89V; current: 4.32A; power: 64.3W; thrust: 191g; efficiency: 2.97g/W A1204 3100KV; GF3028 propeller; 80% throttle.
Performance at 90% throttle, GF3028 propeller	Voltage: 14.89V; current: 5.27A; power: 78.5W; thrust: 215g; efficiency: 2.74g/W A1204 3100KV; GF3028 propeller; 90% throttle.