Cobra C2808/30 Motor Propeller Data
	Motor Wind		Motor Kv		No-Load Current		Motor Resistance		I Max	P Max (3S)
	30-Turn Delta		1000 RPM/Volt		Io = 0.53 Amps @ 10v		Rm = 0.096 Ohms		20 Amps	220 W
	Outside Diameter		Body Length		Total Shaft Length		Shaft Diameter		Motor Weight
	35.0 mm,  1.38 in.		28.1 mm,  1.11 in.		48.0 mm,  1.89 in.		5.00 mm,  0.197 in.		80.5 gm,   2.85 oz
	Prop	Prop	Input	Motor	Watts	Prop	Pitch	Thrust	Thrust	Thrust Eff.
	Manf.	Size	Voltage	Amps	Input	RPM	Speed	Grams	Ounces	Grams/W
	APC	8x6-E	11.1	10.02	111.2	8,520	48.4	616	21.73	5.54
	APC	8x8-E	11.1	13.22	146.7	7,997	60.6	570	20.11	3.88
	APC	9x3.8-SF	11.1	10.59	117.5	8,421	30.3	763	26.91	6.49
	APC	9x4.5-E	11.1	9.64	107.0	8,597	36.6	722	25.47	6.75
	APC	9x4.7-SF	11.1	10.61	117.8	8,421	37.5	773	27.27	6.56
	APC	9x6-E	11.1	11.16	123.9	8,329	47.3	730	25.75	5.89
	APC	9x6-SF	11.1	17.37	192.8	7,253	41.2	880	31.04	4.57
	APC	9x7.5-E	11.1	15.48	171.8	7,598	54.0	751	26.49	4.37
	APC	9x7.5-SF	11.1	19.48	216.2	6,845	48.6	808	28.50	3.74
	APC	9x9-E	11.1	18.36	203.8	7,073	60.3	671	23.67	3.29
	APC	10x3.8-SF	11.1	16.04	178.0	7,459	26.8	1034	36.47	5.81
	APC	10x4.7-SF	11.1	16.99	188.6	7,314	32.6	1046	36.90	5.55
	APC	10x5-E	11.1	13.26	147.2	7,988	37.8	903	31.85	6.14
	APC	10x6-E	11.1	14.38	159.6	7,782	44.2	944	33.30	5.91
	APC	10x7-E	11.1	16.05	178.2	7,499	49.7	963	33.97	5.41
	APC	11x3.8-SF	11.1	17.48	194.1	7,197	25.9	1124	39.65	5.79
	APC	11x4.7-SF	11.1	19.93	221.2	6,678	29.7	1183	41.73	5.35
	APC	11x5.5-E	11.1	16.98	188.5	7,309	38.1	1097	38.70	5.82
	APC	11x7-E	11.1	19.24	213.6	6,905	45.8	1119	39.47	5.24
	APC	11x8-E	11.1	20.74	230.2	6,614	50.1	1009	35.59	4.38
	Prop	Prop	Input	Motor	Watts	Prop	Pitch	Thrust	Thrust	Thrust Eff.
	Manf.	Size	Voltage	Amps	Input	RPM	Speed	Grams	Ounces	Grams/W
	APC	8x4-E	14.8	11.11	164.4	11,485	43.5	857	30.23	5.21
	APC	8x6-E	14.8	16.17	239.3	10,565	60.0	972	34.29	4.06
	APC	8x8-E	14.8	20.22	299.3	9,727	73.7	842	29.70	2.81
	APC	9x4.5-E	14.8	15.32	226.7	10,718	45.7	1163	41.02	5.13
	APC	9x6-E	14.8	17.39	257.4	10,287	58.4	1144	40.35	4.44
	APC	10x5-E	14.8	20.05	296.7	9,734	46.1	1354	47.76	4.56
	APC	10x6-E	14.8	21.40	316.7	9,432	53.6	1397	49.28	4.41
	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.