Cobra C2217/8 Motor Propeller Data
	Motor Wind		Motor Kv		No-Load Current		Motor Resistance		I Max	P Max (3S)
	8-Turn Delta		2300 RPM/Volt		Io = 2.10 Amps @ 8v		Rm = 0.028 Ohms		40 Amps	440 W
	Outside Diameter		Body Length		Total Shaft Length		Shaft Diameter		Motor Weight
	27.7 mm,  1.09 in.		33.0 mm,  1.30 in.		47.0 mm,  1.85 in.		3.17 mm,  0.125 in.		74.0 gm,   2.61 oz
	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	7.4	14.22	105.2	14,510	55.0	451	15.91	4.29
	APC	6x5.5-E	7.4	18.72	138.5	13,900	72.4	442	15.59	3.19
	APC	7x4-E	7.4	22.23	164.5	13,480	51.1	766	27.02	4.66
	APC	7x5-E	7.4	27.53	203.7	12,780	60.5	762	26.88	3.74
	APC	7x6-E	7.4	28.58	211.5	12,630	71.8	819	28.89	3.87
	APC	8x4-E	7.4	31.12	230.3	12,300	46.6	998	35.20	4.33
	APC	8x6-E	7.4	42.13	311.8	10,860	61.7	1044	36.83	3.35
	APC	9x4.5-E	7.4	40.21	297.6	11,070	47.2	1268	44.73	4.26
	APC	9x6-E	7.4	44.55	329.7	10,470	59.5	1205	42.50	3.66
	Prop	Prop	Input	Motor	Watts	Prop	Pitch	Thrust	Thrust	Thrust Eff.
	Manf.	Size	Voltage	Amps	Input	RPM	Speed	Grams	Ounces	Grams/W
	APC	5.25x4.75-E	11.1	23.99	266.3	20,900	94.0	655	23.10	2.46
	APC	5.5x4.5-E	11.1	25.16	279.3	20,710	88.3	673	23.74	2.41
	APC	6x4-E	11.1	28.24	313.5	20,250	76.7	906	31.96	2.89
	APC	6x5.5-E	11.1	34.80	386.3	19,210	100.1	846	29.84	2.19
	APC	7x4-E	11.1	43.60	484.0	17,780	67.3	1406	49.59	2.91
	Prop	Prop	Input	Motor	Watts	Prop	Pitch	Thrust	Thrust	Thrust Eff.
	Manf.	Size	Voltage	Amps	Input	RPM	Speed	Grams	Ounces	Grams/W
	APC	4.75x4.75-E	14.8	30.50	451.4	27,200	122.3	697	24.59	1.54
	APC	4.75x5.5-E	14.8	32.79	485.3	26,890	140.1	651	22.96	1.34
	APC	5x5-E	14.8	33.66	498.2	26,704	126.4	732	25.82	1.47
	APC	5.25x4.75-E	14.8	37.93	561.4	25,900	116.5	997	35.17	1.78
	APC	5.5x4.5-E	14.8	39.12	579.0	25,650	109.3	1046	36.90	1.81
	APC	6x4-E	14.8	43.71	646.9	24,880	94.2	1386	48.89	2.14
	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.