Cobra C-5340-20 160Kv Motor Propeller Data
	Magnets	Motor Wind		Motor Kv		No-Load Current		Motor Resistance		I Max	P Max (12S)
	14-Pole	20-Turn Delta		160 RPM/Volt		Io = 1.63 Amps @ 20v		Rm =  0.035 Ohms		54 Amps	2400 W
	Stator	Outside Diameter		Body Length		Total Shaft Length		Shaft Diameter		Motor Weight
	12-Slot	63.0 mm,  2.48 in.		71.0 mm,  2.80 in.		102.4 mm,  4.03 in.		8.00 mm,  0.315 in.		818 grams, 28.85 oz.
	Test Data From		Input	16.0 V	20.0 V	24.0V	28.0V	Measured Kv value		Measured Rm Value
	Sample Motor		Io Value	1.463 A	1.630 A	1.760 A	1.942 A	165.8 RPM/Volt @ 20V		0.0355 Ohms
	Prop	Prop	Li-Po	Input	Motor	Input	Prop	Pitch Speed	Thrust	Thrust	Thrust Eff.
	Manf.	Size	Cells	Voltage	Amps	Watts	RPM	in MPH	Grams	Ounces	Grams/W
	APC	17x12-E	10	37.0	24.66	912.5	5,708	64.9	3,813	134.50	4.18
	APC	18x10-E	10	37.0	22.12	818.4	5,753	54.5	4,420	155.91	5.40
	APC	18x12-E	10	37.0	31.94	1181.6	5,600	63.6	4,570	161.20	3.87
	APC	19x8-E	10	37.0	26.16	967.8	5,684	43.1	5,174	182.51	5.35
	APC	19x10-E	10	37.0	26.00	961.8	5,700	54.0	5,303	187.06	5.51
	APC	19x12-E	10	37.0	31.07	1149.7	5,614	63.8	5,684	200.50	4.94
	APC	20x8-E	10	37.0	26.98	998.2	5,669	42.9	5,779	203.85	5.79
	APC	20x10-E	10	37.0	32.48	1201.6	5,596	53.0	6,334	223.42	5.27
	APC	20x11-E	10	37.0	35.56	1315.6	5,550	57.8	6,376	224.90	4.85
	APC	20x13-E	10	37.0	37.89	1401.9	5,511	67.8	6,605	232.98	4.71
	APC	20x15-E	10	37.0	47.14	1744.2	5,442	77.3	6,225	219.58	3.57
	APC	21x12W-E	10	37.0	44.92	1662.0	5,412	61.5	7,972	281.20	4.80
	APC	21x14-E	10	37.0	42.36	1567.5	5,450	72.3	7,673	270.65	4.90
	APC	22x10-E	10	37.0	42.66	1578.3	5,441	51.5	8,064	284.45	5.11
	APC	22x12-E	10	37.0	52.90	1957.2	5,300	60.2	8,642	304.83	4.42
	Prop	Prop	Li-Po	Input	Motor	Input	Prop	Pitch Speed	Thrust	Thrust	Thrust Eff.
	Manf.	Size	Cells	Voltage	Amps	Watts	RPM	in MPH	Grams	Ounces	Grams/W
	APC	16x8-E	12	44.4	22.58	1002.6	6,893	52.2	4,332	152.81	4.32
	APC	16x10-E	12	44.4	25.37	1126.3	6,852	64.9	4,459	157.28	3.96
	APC	16x12-E	12	44.4	30.87	1370.8	6,781	77.1	4,157	146.63	3.03
	APC	17x8-E	12	44.4	24.77	1099.8	6,861	52.0	4,946	174.46	4.50
	APC	17x10-E	12	44.4	30.51	1354.7	6,759	64.0	5,323	187.76	3.93
	APC	17x12-E	12	44.4	34.82	1545.8	6,700	76.1	5,261	185.57	3.40
	APC	18x8-E	12	44.4	25.45	1130.2	6,855	51.9	5,871	207.09	5.19
	APC	18x10-E	12	44.4	31.29	1389.3	6,754	64.0	6,193	218.45	4.46
	APC	18x12-E	12	44.4	44.88	1992.5	6,556	74.5	6,331	223.32	3.18
	APC	19x8-E	12	44.4	38.37	1703.6	6,677	50.6	7,264	256.23	4.26
	APC	19x10-E	12	44.4	36.81	1634.3	6,648	63.0	7,324	258.34	4.48
	APC	19x12-E	12	44.4	44.46	1974.0	6,554	74.5	7,789	274.75	3.95
	APC	20x8-E	12	44.4	38.85	1725.0	6,637	50.3	8,096	285.58	4.69
	APC	20x10-E	12	44.4	46.97	2085.5	6,522	61.8	8,709	307.20	4.18
	APC	20x11-E	12	44.4	50.23	2230.0	6,513	67.8	8,701	306.92	3.90
	APC	20x13-E	12	44.4	53.85	2390.8	6,498	80.0	8,955	315.88	3.75
	APC	20x15-E	12	44.4	62.66	2782.1	6,347	90.2	8,411	296.69	3.02
	APC	21x12W-E	12	44.4	63.03	2798.5	6,271	71.3	10,671	376.40	3.81
	APC	22x10-E	12	44.4	61.24	2719.1	6,287	59.5	10,802	381.03	3.97
	XOAR	22x10-W	12	44.4	59.46	2640.0	6,453	61.1	10,888	384.06	4.12
	Propeller Chart Color Code Explanation
		The prop is to small to get good performance from the motor. (Less than 50% power)
		The prop is sized right to get good power from the motor. (50 to 80% power)
		The prop can be used, but full throttle should be kept to short bursts. (80 to 100% power)
		The prop is too big for the motor and should not be used. (Over 100% power)
	PLEASE NOTE:
	The Data contained in this Prop Chart is based on actual measurements, taken in a controlled test environment, at an altitude of
	512 feet above sea level.  The test voltages used are based on the standard output of a Li-Po battery under load, which is 3.70 volts
	per cell.  If you are using a battery that is larger in capacity than normal, or has a very high C-rating, then your actual voltages will
	be higher than those shown in the chart, and this will result in a higher current and power value for every prop used.  You should
	always test your actual power system with a watt meter before flying your model to make sure that you are not exceeding the
	recommended current and power ratings of the motor being used.  The prop recommendations in this chart assume that the motor
	receives adequate cooling throughout its operation.  If your motor is being used inside a cowl or fuselage, you must ensure that
	the motor receives sufficient airflow, and does not get too hot during operation.  It is always best to use a prop size that pulls no
	more than 80% of the motors maximum recommended current value to ensure safe operation under all conditions.