What Motor Should You Choose?
For most classic cars (like VW Beetle, Mini Cooper, Fiat 500, Mustang, MGB, etc.), the most popular and practical choice is an AC Induction Motor or a Permanent Magnet Synchronous Motor (PMSM) paired with a modern controller.
Typical Power Range: 15 kW to 30 kW, this provides performance similar to or better than the original engine.
Key Factor: It’s less about the motor alone and more about the motor + inverter/controller combo.
Types of Electric Motors for Conversions
There are two main types you’ll encounter in the conversion world.
1. AC Induction Motor
How it Works: Uses electromagnetic induction (not permanent magnets) to create a rotating magnetic field.
Pros:
Very robust, simple, and reliable.
Can handle high RPMs and power peaks well.
Generally less expensive than PM motors.
No risk of “cogging” when free-spinning.
Cons:
Slightly less efficient than PM motors, especially at low speeds.
Requires a sophisticated controller.
Best for: High-performance applications, cars where simplicity and robustness are key. The classic example is a salvaged Tesla Large Drive Unit (found in Model S/X).
2. Permanent Magnet Synchronous Motor (PMSM)
How it Works: Uses powerful permanent magnets embedded in the rotor. Very common in modern EVs.
Pros:
Extremely high efficiency and power density (more power in a smaller, lighter package).
Excellent torque at low RPMs.
Cons:
More complex and expensive.
Contains rare-earth magnets (supply chain concerns).
Can have cogging torque.
Best for: Conversions where space is very limited (eg, smaller engine bays) or where maximum range from a given battery pack is the goal. Many aftermarket kits use PMSM motors.
144V 25kW PMSM Motor
Selecting a 144V, 25kW system for an electric vehicle (EV) conversion is a deliberate choice that prioritizes cost, simplicity, and specific use-case functionality over high performance and long range. Here's a breakdown of the reasoning:
1. The Voltage (144V): A "Low-Voltage" System
Safety and Simplicity: A 144V system is often classified as a "low-voltage" or "traction voltage" system in the EV world. It is significantly safer to work on for hobbyists and DIY converters compared to modern high-voltage systems (300V-400V+). It requires less stringent safety gear and insulation.
Component Availability and Cost: Components like DC motors, controllers, contactors, and DC-DC converters for this voltage range are widely available, proven reliable, and generally much less expensive than their high-voltage AC counterparts.
Battery Pack Assembly: Building a 144V battery pack is straightforward. For example, using 3.2V Lithium Iron Phosphate (LiFePO4) cells, you would need:
144V / 3.2V = 45 cells in series.
This is a manageable number for a custom pack build.
2. The Power (25kW): Prioritizing Utility over Performance
Adequate for the Application: A 25kW (approximately 33 horsepower) DC motor produces high initial torque, which is excellent for getting a laden vehicle moving from a stop. This makes it surprisingly adequate for specific, limited-use cases:
Urban Delivery Van: Perfect for low-speed, stop-start "last-mile" delivery in a city where top speed is not a priority.
Airport/Factory Ground Vehicle: Ideal for moving cargo short distances on private property with low speed limits.
Short-Range Commuter: Sufficient for very short daily commutes on low-speed roads.
Cost Efficiency: A 25kW system is one of the most affordable entry points into an EV conversion. The motor and controller combo is cheap.
Energy Efficiency (at low speeds): For its intended low-speed purpose, it can be very efficient. The system has fewer losses than a high-power AC system when not driven hard.
Here is the product link: 25KW 144V for Classic Car
336V 30kW PMSM motor
For users who demand stronger acceleration and more dynamic performance, our 30kW PMSM is the top choice. Designed to deliver higher torque and greater power output, it transforms the car into a vehicle that not only meets but exceeds expectations for electric conversions.
With robust peak torque, this motor ensures quick response when accelerating, overtaking, or climbing steep roads. It is especially suitable for drivers who regularly face demanding conditions or prefer a sportier driving experience. Despite the higher power, the 30 kW motor maintains efficiency through advanced design, ensuring that energy use is optimized.
While slightly larger than lower-rated motors, its installation remains straightforward, and the extra capability provides long-term driving satisfaction. Customers who want their classic car conversion to deliver strong, confident performance will find the 30 kW option the most rewarding. It strikes the perfect balance between modern electric efficiency and the excitement of enhanced driving power.
Here is the product link: 30KW 336V for Classic Car
96V 15kW AC motor
When converting a Classic Car to electric power, a 96v 15 kW motor is an excellent solution for drivers who value efficiency, reliability, and cost-effectiveness. Our 15 kW motor is an AC three-phase motor designed to deliver stable performance for everyday use, particularly in city and suburban environments where smooth acceleration and moderate speed are most important.
One of the main advantages of the 15 kW motor is its well-balanced torque output. It provides a rated torque of 47 N·m, ensuring steady and consistent power for normal driving conditions. At the same time, it can deliver a peak torque of 170 N·m, which gives the vehicle strong acceleration when needed, such as during overtaking or climbing slopes. This combination makes the motor powerful enough to move a light weight classic car with confidence, while still maintaining excellent energy efficiency.
In addition, the 15 kW motor is lighter and more compact than higher-capacity motors, which simplifies installation and helps preserve battery life by reducing overall energy demand. For customers who want to enjoy the benefits of electrification without excessive cost or unnecessary complexity, the 15 kW option is a practical and intelligent choice. It balances power, torque, and efficiency, making it an ideal match for urban EV conversions.
Here is the product link: 15KW engine for Classic Car
