Cobra C-5320-18 370Kv Motor Propeller Data
	Magnets	Motor Wind		Motor Kv		No-Load Current		Motor Resistance		I Max	P Max (8S)
	14-Pole	18-Turn Delta		370 RPM/Volt		Io = 2.50 Amps @ 20v		Rm =  0.023 Ohms		75 Amps	2220 W
	Stator	Outside Diameter		Body Length		Total Shaft Length		Shaft Diameter		Motor Weight
	12-Slot	63.0 mm,  2.48 in.		50.5 mm,  1.99 in.		84.3 mm,  3.32 in.		8.00 mm,  0.315 in.		490 grams, 17.28 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	2.157 A	2.495 A	2.883 A	3.497 A	369.6 RPM/Volt @ 20V		0.0227 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	15x6-E	6	22.2	26.54	589.3	7,406	42.1	3,208	113.16	5.44
	APC	15x8-E	6	22.2	29.91	664.0	7,398	56.0	3,297	116.30	4.97
	APC	15x10-E	6	22.2	43.99	976.6	7,085	67.1	3,703	130.62	3.79
	APC	16x8-E	6	22.2	36.45	809.1	7,277	55.1	3,767	132.88	4.66
	APC	16x10-E	6	22.2	53.05	1177.7	6,905	65.4	4,403	155.31	3.74
	APC	16x12-E	6	22.2	62.97	1397.9	6,724	76.4	3,959	139.65	2.83
	APC	17x8-E	6	22.2	52.02	1154.8	6,950	52.7	4,907	173.09	4.25
	APC	17x10-E	6	22.2	62.14	1379.5	6,738	63.8	5,078	179.12	3.68
	APC	17x12-E	6	22.2	69.59	1544.8	6,580	74.8	4,956	174.82	3.21
	APC	18x8-E	6	22.2	52.62	1168.3	6,934	52.5	5,778	203.81	4.95
	APC	18x10-E	6	22.2	63.51	1409.9	6,687	63.3	6,038	212.98	4.28
	APC	18x12-E	6	22.2	87.31	1938.4	6,523	74.1	5,622	198.31	2.90
	APC	19x8-E	6	22.2	74.60	1656.1	6,527	49.4	6,766	238.66	4.09
	APC	19x10-E	6	22.2	72.43	1607.9	6,538	61.9	6,908	243.67	4.30
	APC	19x12-E	6	22.2	86.20	1913.6	6,515	74.0	7,017	247.51	3.67
	APC	20x8-E	6	22.2	76.45	1697.2	6,562	49.7	7,580	267.37	4.47
	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	15x6-E	7	25.9	37.08	960.2	8,500	48.3	4,366	154.00	4.55
	APC	15x8-E	7	25.9	40.59	1051.4	8,413	63.7	4,304	151.82	4.09
	APC	15x10-E	7	25.9	60.84	1575.8	7,990	75.7	4,690	165.43	2.98
	APC	16x8-E	7	25.9	66.78	1729.7	7,889	59.8	5,489	193.62	3.17
	APC	16x10-E	7	25.9	73.47	1902.8	7,787	73.7	5,558	196.05	2.92
	APC	16x12-E	7	25.9	83.78	2169.9	7,686	87.3	5,012	176.79	2.31
	APC	17x8-E	7	25.9	70.75	1832.5	7,873	59.6	6,219	219.37	3.39
	APC	17x10-E	7	25.9	84.51	2188.9	7,633	72.3	6,436	227.02	2.94
	APC	18x8-E	7	25.9	69.42	1798.1	7,850	59.5	7,415	261.55	4.12
	APC	18x10-E	7	25.9	83.79	2170.1	7,650	72.4	7,749	273.34	3.57
	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	15x6-E	8	29.6	49.72	1471.6	9,445	53.7	5,381	189.81	3.66
	APC	15x8-E	8	29.6	53.14	1572.9	9,384	71.1	5,307	187.20	3.37
	APC	15x10-E	8	29.6	81.15	2402.0	9,027	85.5	5,647	199.19	2.35
	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
	584 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.