MAD X4125 IPE V1.0 eVTOL Airplane Drone Motor 250KV 12S / 540KV 6S, IP35, Max 7.1kgf

Description

Overview

The MAD X4125 is an eVTOL airplane drone motor offered in two variants: 250KV (12S) and 540KV (6S). It is specified for sustained thrust of 2~3 kg and maximum thrust up to 7.1 kgf (variant-dependent), with IP35 protection and a supplied mounting hardware set.

Key Features

• Motor model: MAD X4125 IPE V1.0
• IP35 degree of protection
• Centrifugal heat dissipation: YES
• Stator: High-quality silicon steel sheets / Resistant to fluorine coating at 180C
• Varnished wire degree: 180C; magnet degree: 150C
• Support voltage variants: 250KV/12S; 540KV/6S

Specifications

Motor (Common)

Motor Model	MAD X4125 IPE V1.0
Number of pole pairs	7
Motor size	D:50 x 74 mm
Degree of protection	IP35
Cable length	Enamelled wire 100 mm
Centrifugal heat dissipation	YES
Rotor balance	5 mg
Motor balance	10 mg
Propeller mounting holes	D:20 M3 x 4 / M8 nut
Motor mounting holes	D:30 M4 x 4 / D:56 M4 x 4 / D:60 M4 x 4
Shaft diameter	IN: 6 mm
Bearing	MR126 ZZ x 2 / 696ZZ x 1
Disruptive test	500 V
Stator	High-quality silicon steel sheets / Resistant to fluorine coating at 180C
Varnished wire degree	180C
Magnet degree	150C

Mechanical Drawing (Additional Dimensions)

Overall length	74 mm
Body length	50 mm
Motor outer diameter	850
Rear mount pattern	830 – M4 x 4
Front prop pattern	820 – M3 x 4
Prop plate (OD / center hole / thickness)	870 / 815 / 4 mm
Prop adapter (overall length)	35 mm
Prop adapter (step lengths)	28 mm, 18 mm
Prop adapter (outer diameter)	828

Performance Summary

Variant	Sustained thrust	Max thrust	Support voltage	Motor weight
250KV	2~3 kg	7.1 kgf	12S	345 g
540KV	2~3 kg	6.7 kgf	6S	347 g

250KV (12S) Datasheet Specs

RPM/V	250 KV
Nominal voltage	12S lipo battery
No load current	1.2 A / 25 V
Internal resistance	58 ma9
Motor weight	345 g
Product boxed weight	669 g (180 x 140 x 85 mm)
Maximum current	47.0 A
Maximum power	2036 W
Maximum thrust	7.1 kg
Rated output power	300 W
Recommended ESC	MAD AMPX 80A (5-14S)
Recommended propellers	APC15X8, APC16X8
UAV take-off weight	12S-16″/ 10kg–Quadcopter; 15kg–Hexacopter; 20kg–Octocopter
Single rotor take-off weight	2 kg – 3 kg

250KV Analytical Operation Data (APC 15X8, AMPX 80A)

Throttle [%]	Voltage [V]	Current [A]	Input Power [W]	Output Power [W]	Torque [N*m]	RPM	Thrust [gf]	Efficiency [%]	Efficiency [gf/W]
30	44.56	1.33	59.0	35.8	0.114	3000	602	60.70	10.2
35	44.53	1.84	82.0	57.0	0.155	3511	774	69.50	9.4
40	44.50	2.66	118.4	84.9	0.206	3936	1033	71.80	8.7
45	44.47	3.48	154.8	114.6	0.251	4352	1284	74.10	8.3
50	44.44	4.98	221.3	175.1	0.338	4948	1641	79.10	7.4
55	44.41	6.65	295.3	241.8	0.421	5486	2054	81.90	7.0
60	44.32	8.54	378.5	314.4	0.504	5963	2429	83.10	6.4
65	44.27	10.63	470.6	396.2	0.623	6088	2812	84.30	6.0
70	44.20	13.02	575.5	488.5	0.686	6796	3264	84.90	5.7
75	44.14	16.24	716.8	616.0	0.808	7283	3843	85.90	5.4
80	44.06	19.54	861.0	748.5	0.920	7766	4235	86.90	4.9
85	43.98	23.11	1016.3	883.4	1.029	8202	4752	86.90	4.7
90	43.85	27.53	1207.1	1048.2	1.182	8469	5144	86.80	4.3
95	43.75	32.85	1437.3	1216.7	1.315	8836	5548	84.70	3.9
100	43.66	39.60	1728.8	1418.8	1.469	9225	5946	82.10	3.4

250KV Analytical Operation Data (APC 16X8, AMPX 80A)

Throttle [%]	Voltage [V]	Current [A]	Input Power [W]	Output Power [W]	Torque [N*m]	RPM	Thrust [gf]	Efficiency [%]	Efficiency [gf/W]
30	44.59	1.67	74.5	46.9	0.151	2956	717	63.00	9.6
35	44.55	2.41	107.4	74.4	0.206	3454	987	69.30	9.2
40	44.52	3.24	144.2	105.4	0.259	3879	1262	73.10	8.8
45	44.47	4.08	181.4	144.6	0.321	4298	1538	79.70	8.5
50	44.46	5.79	257.4	208.4	0.407	4894	1989	81.00	7.7
55	44.39	8.17	362.6	300.2	0.530	5404	2489	82.80	6.9
60	44.30	10.42	461.6	376.3	0.612	5868	2966	81.50	6.4
65	44.21	12.96	572.9	480.3	0.729	6291	3412	83.80	6.0
70	44.14	15.99	705.8	601.7	0.856	6710	3968	85.20	5.7
75	44.07	19.57	862.4	720.5	0.969	7104	4484	83.50	5.2
80	43.94	23.84	1047.4	860.5	1.088	7554	5067	82.20	4.8
85	43.83	28.13	1232.9	1027.8	1.245	7886	5548	83.40	4.5
90	43.66	33.32	1454.7	1205.0	1.402	8209	6213	82.80	4.3
95	43.53	39.27	1709.2	1405.6	1.577	8512	6725	82.20	3.9
100	43.35	46.96	2035.9	1647.1	1.775	8862	7330	80.90	3.5

250KV Notes (from datasheet)

• Analytical graph legend: I = current, P = input power, b7 = electrical efficiency, T = thrust, N = rotational speed.
• Measurement condition note: data measured with input voltage of 48 V, temperature of 25C, at sea level; rotational speed adjusted by throttle.
• Reference-only note: When room temperature is 25C and there is no additional cooling device, current over 47 A is a non-working zone; 13 A to 47 A is a short-term (about 10-30 s) working zone; below 13 A is sustainable working zone. Control motor running time according to environment temperature and heat dissipation conditions.

540KV (6S) Datasheet Specs

RPM/V	540 KV
Nominal voltage	6S lipo battery
No load current	2.85 A / 10 V
Internal resistance	13 ma9
Motor weight	347 g
Product boxed weight	671 g (180 x 140 x 85 mm)
Maximum current	92.5 A
Maximum power	1898 W
Maximum thrust	6.7 kg
Rated output power	347 W
Recommended ESC	MAD AMPX 120A (5-14S)
Recommended propellers	APC15X8, APC16X8
UAV take-off weight	12S-16″/ 10kg–Quadcopter; 15kg–Hexacopter; 20kg–Octocopter
Single rotor take-off weight	2.5 kg – 3 kg

540KV Analytical Operation Data (APC 15X8, AMPX 120A)

Throttle [%]	Voltage [V]	Current [A]	Input Power [W]	Output Power [W]	Torque [N*m]	RPM	Thrust [gf]	Efficiency [%]	Efficiency [gf/W]
30	22.56	5.54	125.0	77.5	0.193	3842	913	62.00	7.3
35	22.49	7.35	165.3	108.4	0.239	4326	1152	65.60	7.0
40	22.44	10.29	230.9	162.8	0.324	4802	1563	70.50	6.8
45	22.36	12.68	283.5	207.8	0.377	5265	1835	73.30	6.5
50	22.29	15.71	350.1	271.7	0.470	5516	2173	77.60	6.2
55	22.18	18.52	410.7	330.7	0.536	5887	2441	80.50	5.9
60	22.08	22.63	499.7	394.2	0.595	6328	2809	78.90	5.6
65	21.98	26.67	586.2	463.2	0.652	6787	3151	79.00	5.4
70	21.90	32.45	710.5	549.5	0.737	7124	3617	77.30	5.1
75	21.79	38.29	834.1	655.0	0.840	7451	4016	78.50	4.8
80	21.56	45.70	985.5	768.2	0.930	7885	4426	78.00	4.5
85	21.38	51.77	1106.7	885.4	1.020	8293	4783	80.00	4.3
90	21.16	60.98	1290.3	1002.5	1.120	8545	5065	77.70	3.9
95	21.00	69.29	1454.7	1103.5	1.205	8748	5342	75.90	3.7
100	20.71	80.24	1661.9	1258.4	1.345	8935	5608	75.70	3.4

540KV Analytical Operation Data (APC 16X8, AMPX 120A)

Throttle [%]	Voltage [V]	Current [A]	Input Power [W]	Output Power [W]	Torque [N*m]	RPM	Thrust [gf]	Efficiency [%]	Efficiency [gf/W]
30	22.49	5.55	124.8	82.9	0.206	3843	1029	66.40	8.3
35	22.43	8.22	184.4	126.8	0.283	4273	1428	68.80	7.8
40	22.36	11.34	253.6	180.3	0.367	4688	1804	71.10	7.1
45	22.28	13.74	306.1	230.9	0.444	4966	2055	75.40	6.7
50	22.19	16.56	367.5	276.4	0.490	5386	2402	75.20	6.5
55	22.07	20.03	442.0	347.1	0.577	5747	2753	78.50	6.2
60	21.96	25.64	563.1	445.9	0.692	6157	3256	79.20	5.8
65	21.87	31.12	680.6	520.8	0.757	6573	3708	76.50	5.5
70	21.70	37.78	820.0	639.1	0.885	6896	4161	77.90	5.1
75	21.54	45.42	978.2	771.1	1.005	7329	4685	78.80	4.8
80	21.35	53.28	1137.4	904.9	1.133	7629	5226	79.60	4.6
85	21.16	62.11	1314.4	991.4	1.191	7945	5624	75.40	4.3
90	20.95	72.06	1509.9	1111.3	1.280	8291	6056	73.60	4.0
95	20.72	84.24	1744.9	1279.3	1.452	8415	6364	73.30	3.7
100	20.52	92.53	1898.4	1370.3	1.527	8571	6784	72.20	3.6

540KV Notes (from datasheet)

• Analytical graph legend: I = current, P = input power, b7 = electrical efficiency, T = thrust, N = rotational speed.
• Measurement condition note: data measured with input voltage of 24 V, temperature of 25C, at sea level; rotational speed adjusted by throttle.
• Reference-only note: When room temperature is 25C and there is no additional cooling device, current over 92 A is a non-working zone; 31 A to 92 A is a short-term (about 10-30 s) working zone; below 31 A is sustainable working zone. Control motor running time according to environment temperature and heat dissipation conditions.

What’s Included

• Motor x1
• Prop Adapter x1
• 4.0 mm Bullet Connector x3
• Prop Plate x1
• Shaft Locking Collar x1
• Cross Plate x1
• M8 Nut x1
• M3*3 Machine Screw x1
• Heat Shrinkable Tube x3
• M3*8 Prop Adapter Screws x4
• M4*8 X-Mount Installation Screw x4
• M3*8 Motor Screws x4
• Sticker x2

Applications

• eVTOL airplane propulsion setups
• Multirotors (quadcopters, hexacopters, octocopters) as referenced in the datasheet

For selection and compatibility confirmation (battery/ESC/propeller matching), contact [email protected] or visit https://rcdrone.top/.

Details

MAD X4125 IPE V1.0 eVTOL airplane drone motor drawings list key dimensions and the mounting hole pattern for accurate installation.

The MAD X4125 IPE V1.0 motor kit includes a prop adapter, cross plate, prop nut, shaft locking collar, bullet connectors, and mounting screws for installation.

MAD X4125 250KV eVTOL airplane drone motor is listed for 12S (2030V) setups with a stated weight of 345g and efficiency over 82%.

The MAD X4125 IPE V1.0 motor is listed at 540KV and includes an efficiency curve plus detailed performance tables for setup reference.