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72V 20kw Jet Propulsion Electric Waterjet Pump Engine for Karting Boat

eJet95-20kw 72V Jet Propulsion Electric Waterjet Pump Engine for Karting Boat

The Hobiba eJet-20.0 is the flagship of integrated electric marine propulsion, merging a 20KW direct-drive motor with a 115mm jet pump. Engineered for extreme performance, it delivers 136 kgf of thrust, speeds beyond 65 km/h, and an exceptional power density of ~1.4 kW/kg—all from a compact, IP68-rated unit weighing just 14 kg. Its fully submersible design ensures quiet, reliable operation in any water conditions, while the integrated reversing bucket provides precise control. Built with anodized 6061-T6 aluminum for saltwater durability, the eJet-20.0 is the ultimate turnkey solution for high-speed electric jet skis, performance boats, and advanced watercraft.

Max Speed:65 km/h
Max. Thrust: 136 kgf
Max. Speed:11,340 rpm

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System Types:
Waterjet Pump
Kv:
<100
Controller Type:
Sensorless
Maximum Voltage:
72V
Maximum Continuous Current:
< 120A

Waterjet Pump Engine Karting Boat waterjet propulsion System Jet Propulsion

Features

Specification

Dyno Tested Data

Dimension

Key Features

Flagship Performance: Delivers 136 kgf of thrust and 65+ km/h speeds from a 20KW peak power motor and 115mm impeller.
High-Efficiency Direct Drive: Achieves over 94% motor efficiency for maximum range and instant throttle response.
Ultra-High Power Density: Compact design yields an exceptional ~1.4 kW/kg power-to-weight ratio.
Wide Voltage Compatibility: Operates on 48-84V systems for flexible integration with 13S-20S LiPo batteries.
Rugged & Submersible: IP68-rated with anodized aluminum housing for silent, reliable operation in saltwater.
Precision Control: Integrated reversing bucket enables smooth backing and braking maneuvers.

Parameter	Value
Model	TF108-72V20KW (eJet-20.0)
Rated Voltage	72V DC
Operating Voltage Range	48V - 84V DC
Rated / Peak Power	20KW / 25KW+
Rated / Peak Current	270A / 500A
Max. Static Thrust	136 kgf (1330N) @ 80V+
Max. Motor Speed	~11，340 RPM
Max. Craft Speed	65 km/h (hull dependent)
Jet Dry Weight	14 kg
Housing Material	Anodized 6061-T6 Aluminum
Impeller Diameter	115 mm (4.5 inches)
Motor Type	Permanent Magnet Brushless DC (12S/10P)
Protection Rating	IP68 (Fully Submersible)
Key Dimensions	Approx. L600 x W108 x H108 mm
Key Feature	Integrated Reversing Bucket

Underwater Thrust Testing with different throttle
Voltage (V)	Current (A)	Input Power (W)	Motor speed (RPM)	Thrust (kgf)	Throttle (%)	Thrust/Power (Kgf/kw)
60	4	240	1630	7.2	20	30.00
60	11	660	2308	14.3	30	21.67
60	22	1320	2940	23.8	40	18.03
60	38	2280	3703	36.4	50	15.96
60	63	3780	4225	49.3	60	13.04
60	99	5940	4762	64.3	70	10.82
60	139	8340	5454	81.7	80	9.80
60	188	11280	5940	91.4	90	8.10
60	251	15060	6636	112.2	100	7.45
72	4.39	316.08	1938	9.3	20	29.42
72	12.05	867.6	2776	18.6	30	21.44
72	24.6	1771.2	3140	31.8	40	17.95
72	48.9	3520.8	4453	52.4	50	14.88
72	69.2	4982.4	5080	69.3	60	13.91
72	108.5	7812	5762	88.3	70	11.30
72	152.3	10965.6	6556	106.7	80	9.73
72	206.9	14896.8	7146	117.4	90	7.88
72	275	19800	7978	123	100	6.21
80	5.19	415.2	2131	12.1	20	29.14
80	12.65	1012	3052	26.5	30	26.19
80	25.7	2056	3232	33.8	40	16.44
80	43.9	3512	4593	52.1	50	14.83
80	72.6	5808	5280	75.3	60	12.96
80	114.5	9160	6338	94.3	70	10.29
80	159.9	12792	7167	116.7	80	9.12
80	239	19120	8089	128.4	85	6.72
80	270	21600	8776	133.6	100	6.19