Cobra C2820/8 Motor Propeller Data
	Motor Wind		Motor Kv		No-Load Current		Motor Resistance		I Max	P Max (3S)
	8-Turn Delta		1450 RPM/Volt		Io = 2.50 Amps @ 10v		Rm = 0.020 Ohms		55 Amps	610 W
	Outside Diameter		Body Length		Total Shaft Length		Shaft Diameter		Motor Weight
	35.0 mm,  1.38 in.		40.0 mm,  1.57 in.		60.0 mm,  2.36 in.		5.00 mm,  0.197 in.		139 gm,   4.90 oz
	Prop	Prop	Input	Motor	Watts	Prop	Pitch	Thrust	Thrust	Thrust Eff.
	Manf.	Size	Voltage	Amps	Input	RPM	Speed	Grams	Ounces	Grams/W
	APC	7x5-E	11.1	26.19	290.7	14,520	68.8	965	34.04	3.32
	APC	7x6-E	11.1	27.19	301.9	14,371	81.7	1047	36.93	3.47
	APC	8x4-E	11.1	30.79	341.8	14,096	53.4	1315	46.38	3.85
	APC	8x6-E	11.1	46.13	512.0	12,893	73.3	1477	52.10	2.88
	APC	8x8-E	11.1	57.37	636.8	12,203	92.4	1306	46.07	2.05
	APC	9x4.5-E	11.1	42.24	468.9	13,200	56.3	1846	65.12	3.94
	APC	9x6-E	11.1	48.20	535.0	12,847	73.0	1775	62.61	3.32
	APC	10x5-E	11.1	57.45	637.7	12,162	57.6	2119	74.74	3.32
	Prop	Prop	Input	Motor	Watts	Prop	Pitch	Thrust	Thrust	Thrust Eff.
	Manf.	Size	Voltage	Amps	Input	RPM	Speed	Grams	Ounces	Grams/W
	APC	6x4-E	14.8	19.62	290.3	20,353	77.1	913	32.20	3.14
	APC	6x5.5-E	14.8	24.39	361.0	19,825	103.3	944	33.30	2.62
	APC	7x4-E	14.8	35.30	522.4	18,999	72.0	1603	56.54	3.07
	APC	7x5-E	14.8	43.89	649.6	18,301	86.7	1607	56.68	2.47
	APC	7x6-E	14.8	45.22	669.2	18,208	103.5	1713	60.42	2.56
	APC	8x4-E	14.8	52.04	770.1	17,641	66.8	2098	74.00	2.72
	APC	9x4.5-E	14.8	69.03	1021.6	16,218	69.1	2942	103.77	2.88
	Prop	Prop	Input	Motor	Watts	Prop	Pitch	Thrust	Thrust	Thrust Eff.
	Manf.	Size	Voltage	Amps	Input	RPM	Speed	Grams	Ounces	Grams/W
	APC	6x4-E	18.5	30.50	564.2	24,675	93.5	1310	46.21	2.32
	APC	6x5.5-E	18.5	36.96	683.8	24,064	125.3	1370	48.32	2.00
	APC	7x4-E	18.5	55.42	1025.2	22,384	84.8	2258	79.65	2.20
	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.  The test voltages used are based on a properly sized Li-Po battery for the current
	draw of the motor being tested.  If you are using a larger than normal capacity battery, or a very
	high C-Rated battery, your actual voltages will be higher than those shown in this chart, and this
	will result in higer current draw for each prop used.  You should always test your power system
	with a watt meter whenever a prop is used to ensure that you are not exceeding the recommended
	rating of the motor being used.  The prop recommendations in this chart are based on the motor
	receiving adequate cooling throughout its operation.  If your motor is being used inside a cowl, you
	must provide adequate cooling to the motor and make sure that the motor is not getting too hot
	during operation.