Cobra C4120/16 Motor Propeller Data
	Motor Wind		Motor Kv		No-Load Current		Motor Resistance		I Max	P Max (5S)
	16-Turn Delta		610 RPM/Volt		Io = 1.51 Amps @ 14v		Rm = 0.024 Ohms		62 Amps	1150 W
	Outside Diameter		Body Length		Total Shaft Length		Shaft Diameter		Motor Weight
	49.8 mm,  1.96 in.		51.8 mm,  2.04 in.		74.5 mm,  2.93 in.		6.00 mm,  0.236 in.		290 gm,   10.23 oz
	Prop	Prop	Input	Motor	Watts	Prop	Pitch	Thrust	Thrust	Thrust Eff.
	Manf.	Size	Voltage	Amps	Input	RPM	Speed	Grams	Ounces	Grams/W
	APC	12x8-E	14.8	29.52	436.9	7,897	59.8	1845	65.08	4.22
	APC	12x10-E	14.8	33.96	502.6	7,615	72.1	1986	70.05	3.95
	APC	12x12-E	14.8	40.24	595.6	7,506	85.3	1862	65.68	3.13
	APC	13x6.5-E	14.8	32.52	481.3	7,777	47.9	2542	89.67	5.28
	APC	13x8-E	14.8	35.56	526.3	7,676	58.2	2522	88.96	4.79
	APC	13x10-E	14.8	47.24	699.2	7,253	68.7	2342	82.61	3.35
	APC	14x7-E	14.8	40.69	602.2	7,493	49.7	2998	105.75	4.98
	APC	14x8.5-E	14.8	41.43	613.1	7,338	59.1	3035	107.06	4.95
	APC	14x10-E	14.8	42.33	626.5	7,433	70.4	3024	106.67	4.83
	APC	14x12-E	14.8	61.65	912.5	6,779	77.0	2483	87.58	2.72
	APC	15x4-E	14.8	32.18	476.2	7,794	29.5	2939	103.67	6.17
	APC	15x6-E	14.8	42.91	635.1	7,411	42.1	3420	120.64	5.39
	APC	15x8-E	14.8	44.73	662.1	7,339	55.6	3353	118.27	5.06
	APC	15x10-E	14.8	63.06	933.3	6,726	63.7	3527	124.41	3.78
	APC	16x8-E	14.8	66.73	987.6	6,583	49.9	4045	142.68	4.10
	MAS	11x8x3	14.8	24.88	368.2	8,069	61.1	1908	67.30	5.18
	MAS	12x6x3	14.8	25.49	377.2	8,042	45.7	2103	74.18	5.58
	MAS	12x8x3	14.8	36.60	541.6	7,646	57.9	2721	95.98	5.02
	MAS	13x8x3	14.8	40.49	599.3	7,511	56.9	2975	104.94	4.96
	MAS	14x7x3	14.8	46.94	694.7	7,277	48.2	3487	123.00	5.02
	MAS	14x9x3	14.8	55.43	820.4	6,984	59.5	3809	134.36	4.64
	MAS	15x7x3	14.8	57.29	847.9	6,921	45.9	4034	142.29	4.76
	Prop	Prop	Input	Motor	Watts	Prop	Pitch	Thrust	Thrust	Thrust Eff.
	Manf.	Size	Voltage	Amps	Input	RPM	Speed	Grams	Ounces	Grams/W
	APC	11x7-E	18.5	30.04	555.8	9,824	65.1	2427	85.61	4.37
	APC	11x8-E	18.5	34.38	636.0	9,801	74.3	2358	83.18	3.71
	APC	11x8.5-E	18.5	37.36	691.1	9,673	77.9	2442	86.14	3.53
	APC	11x10-E	18.5	43.27	800.5	9,465	89.6	2243	79.12	2.80
	APC	12x6-E	18.5	35.34	653.9	9,763	55.5	2991	105.50	4.57
	APC	12x8-E	18.5	43.70	808.5	9,451	71.6	2716	95.80	3.36
	APC	12x10-E	18.5	53.41	988.0	9,094	86.1	2825	99.65	2.86
	APC	12x12-E	18.5	57.77	1068.7	8,938	101.6	2661	93.86	2.49
	APC	13x6.5-E	18.5	49.77	920.7	9,215	56.7	3682	129.88	4.00
	APC	13x8-E	18.5	53.65	992.5	9,078	68.8	3568	125.86	3.59
	APC	14x7-E	18.5	60.49	1119.0	8,777	58.2	4104	144.76	3.67
	APC	14x8.5-E	18.5	63.63	1177.2	8,711	70.1	4144	146.17	3.52
	APC	15x4-E	18.5	49.31	912.3	9,226	34.9	4397	155.10	4.82
	APC	15x6-E	18.5	64.23	1188.3	8,684	49.3	4821	170.05	4.06
	MAS	10x7x3	18.5	26.58	491.7	10,106	67.0	2239	78.98	4.55
	MAS	11x7x3	18.5	32.51	601.4	9,867	65.4	2691	94.92	4.47
	MAS	11x8x3	18.5	35.65	659.5	9,744	73.8	2796	98.62	4.24
	MAS	12x6x3	18.5	36.66	678.1	9,696	55.1	3106	109.56	4.58
	MAS	12x8x3	18.5	50.07	926.2	9,047	68.5	3794	133.83	4.10
	MAS	13x8x3	18.5	57.06	1055.6	8,949	67.8	4256	150.12	4.03
	MAS	14x7x3	18.5	66.33	1227.1	8,600	57.0	4896	172.70	3.99
	Prop	Prop	Input	Motor	Watts	Prop	Pitch	Thrust	Thrust	Thrust Eff.
	Manf.	Size	Voltage	Amps	Input	RPM	Speed	Grams	Ounces	Grams/W
	APC	10x6-E	22.2	27.82	617.5	12,126	68.9	2297	81.02	3.72
	APC	10x7-E	22.2	33.50	743.7	11,893	78.8	2414	85.15	3.25
	APC	10x10-E	22.2	49.20	1092.3	11,262	106.6	2272	80.14	2.08
	APC	11x5.5-E	22.2	36.90	819.2	11,741	61.2	3223	113.69	3.93
	APC	11x7-E	22.2	42.99	954.3	11,336	75.1	3292	116.12	3.45
	APC	11x8-E	22.2	49.24	1093.1	11,266	85.3	3155	111.29	2.89
	APC	11x8.5-E	22.2	53.05	1177.6	11,126	89.6	3209	113.19	2.72
	APC	11x10-E	22.2	60.00	1332.0	10,866	102.9	2988	105.40	2.24
	APC	12x6-E	22.2	51.08	1134.0	11,200	63.6	4071	143.60	3.59
	APC	12x8-E	22.2	60.37	1340.1	10,837	82.1	3588	126.56	2.68
	APC	13x4-E	22.2	40.32	895.1	11,444	43.3	3992	140.81	4.46
	APC	13x6.5-E	22.2	71.81	1594.2	10,392	64.0	4610	162.61	2.89
	MAS	9x7x3	22.2	27.35	607.1	12,147	80.5	2381	83.99	3.92
	MAS	10x5x3	22.2	24.19	537.0	12,296	58.2	2382	84.02	4.44
	MAS	10x7x3	22.2	35.80	794.7	11,783	78.1	3063	108.04	3.85
	MAS	11x7x3	22.2	43.78	971.8	11,481	76.1	3666	129.31	3.77
	MAS	11x8x3	22.2	48.75	1082.3	11,276	85.4	3733	131.68	3.45
	MAS	12x6x3	22.2	49.43	1097.4	11,253	63.9	4241	149.60	3.86
	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.