YKS MX2204 2300KV brushless motor review

I received two YKS MX2204 2300KV brushless motors for reviewing purposes.  Needless to say that receiving them for free will not change my review.  This will be my first motor review and I'm excited to dive into it!  Being my first I don't have much to compare them to besides some Le Todar 2204 2300kv motors I'll also be reviewing and the Cobra 2204 1960kv motors I typically fly.

Specifications:
Model: MX2204
KV: 2300
Motor diameter: 27mm
Motor length (no shaft): 27.7
Stator diameter: 22mm
Stator length: 4mm
Shaft: 4.94mm
Weight: 21g
Batteries: 2-3 cells
No-load current: 0.6A
Top Mounting Holes: None

As with many brushless motors this size these are rated for 2-3s but since I fly 4s that's what I'll test them on.




Pros

• Comes with 2 sets of screws: One longer and one shorter.  The shorter worked great for 4mm arms.
• Not a lot of play in motor wires
• Clean windings
• Shaft is part of the bell.

Cons

• Short motor wires.  This isn't an issue for some but could be for others.  If they are longer you can always trim them but if they are too short it can be a pain.
• Pretty warm on 4s with 5040 and 5045 props.
• Really hot on 4s with 6040.  Not recommended!
• One out of two motors have bearing issues I have to look into.

Neutral

• Doesn't come with a prop washer but the prop nut is so large I think it's fine.

Conclusion

• Appears to be a good motor for the price.  Once I have a few more motors tested on my setup I'll have a better idea if it's efficient and/or powerful compared to other standards.
• Don't run 6" props with 4s on this baby.  The smell I got after running it for 3-5 seconds was not pleasant.

Performance test(See the thrust test page for more results)

Brand	Size	KV	Prop	Amps	Watts	Volts	Grams	G/W
YKS	2204	2300	5040 DAL	15.86	201.59	15.76	572.40	2.84
YKS	2204	2300	5045 Gemfan	16.17	253.02	15.73	663.00	2.62
YKS	2204	2300	5045 DAL Bullnose	21.47	327.95	15.36	653.50	1.99
YKS	2204	2300	5040 Triblade	20.36	312.90	15.47	705.25	2.25
YKS	2204	2300	6040 King Kong	22.36	338.48	15.24	779.60	2.30

YKS MX2204 2300KV Brushless 250 Quadcopter Motor (CCW)
by YKS
Link: http://amzn.com/B016ORR460