ZMR 1804 2400KV Micro Size Integration Outrunner Brushless Motor(Clockwise/CW)
 
1804 2400KV Micro Size OutrunnerBrushless Motor Designed for Multicopter
As of testing, full load of this motor demands between 6A - 8A current. Soa >10A ESC is recommended, a 6A ESC might be too low if you need to drive itvery hard.This is a great little motor suitable for multirotor helicopters sizebetween 200-330mm.

Specifications:

.Color:As Pictures Shown
.Type:Clockwise/CW
.Motor Diameter: Approx. 23.6mm
.Motor Shaft Diameter: 5mm
.Capable of 6-12~ amps of power draw
.Includes 1 spinner (5mm diameter) and 4 M2x5 phillips mounting screws
.Motor wire length = 40mm
.Compabitable with: QAV/ZMR/H230MM/240MM/250MM/280MM/300 Quadcopter Frame
.Package Weight:23g
.Package Dimensions:46*42*32mm
.Packing:Box

Which ESC is suitable for this motor?
The testing (with 3S Li-Po, 10A ESC and both 5030 2-Blade & 3-BladePropeller) shows that this motor demands between 7.5 - 8.5A during full load(100% Throttle). So a 10A ESC is preferred to avoid overheat if you plan todrive this motor hard. The temperature of  10A ESC was only a little warm after a continuous full load after 5-6minutes.
10A G Series SimonK (better option)
10A SS Series SimonK (economy option)
A wholesales customer reported that the motors work beautifully which he used4S 2200mAh 25C with 12A ESC on 5030 Props. But we have not yet tried so it isnot guaranteed but you are welcome to report.

Why this motor has *R and without *R?
When you run your Quadcopter, you need Two Clockwise and Two Anti-Clockwisemotors.

Without *R  is the clockwise motor
With *R  is the counter-clockwise motor

Washer Needed?

Depends on the thickness ofthe frame which you will install this motor, you might need to use a washerwith the screws because they might be too long if your frame is thin. So youneed to check this carefully during the installation (to see whether the screwis too close to the motor wire inside. If yes, then you need to use a washer).

The Washer needed is M2 Washer. Beside using washers, you may also consider touse shorter screws eg. 2*5 or 2*4 depends on the thickness of the frame.

The thickness of the frame that this motor was originally designed for is2.2mm. The screw is about 2*6 (Diameter is about 2mm and the total length isabout 5.8mm). So in that case if the thickness of your frame is less than2.2mm, then you might need to use a Washer, and you need to check carefullyduring installation whether the screw is too long which touches of the wireinside the motor.

Package Content:

.1 x 1804 2400KV Outrunner Brushless Motor