3-Phase AC Electric-Oil Cooled Dual (AC-34x2/AC-35x2)

Motor Marine Drive Systems Manufactured For Sailboats, Harbor Cruisers, Canal Boats

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We have Designed and Developed A Lithium-Ion Battery Kit For Golf Cars That Is Completely Integrated With The HPEVS Golf Car AC Drive Systems

It is Amazing To Us To See What Can Be Done With Our Drive Systems! Here Is Yet Another Example!

Our "Original" AC Drive System For Golf Cars Just Got A Whole Lot Better With The Introduction of an Automatic Parking Brake!!

Golf Car Systems


The "original", and still the best AC drive system available for your golf car!




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We Have Developed a New Generic Software Package

New additions to this package include OBDII and Curtis Instruments enGage VII display support.


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We have added to our website dimensional drawings of the Curtis Instruments controllers.

These drawings can be helpful during the design phase of a project.

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We Are Pleased To Announce Our New Line of Oil Cooled Motors.

These motors have a stainless steel frame, anodized aluminum junction box and end bells, totally sealed and oil cooled.

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The Folks at EV West Have Created a Vehicle with One of Our Drive Systems!




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Diagnostic and Troubleshooting Documentation.






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144 Volt Automobile Systems

The Scion pictured has the first prototype!




Mining Vehicle Systems

Specialty motors designed and built for your specific applications!






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96 Volt Automotive Systems

This is one of many systems available for auto conversions!




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Motorcycle Systems

WHAT A RUSH!!






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Utility Vehicle Systems


We have a drive system to fulfill your utility vehicle requirements!





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HPEVS Drive Systems

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Schematics, Instructions and Troubleshooting

To assist you, our customers, we have compiled all the documentation needed to wire, program and troubleshoot. The wiring diagrams include documentation for on-road vehicles, golf cars and hydraulic pump applications. Click on the graphic above to open the page with the information.

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What's New

We have included a variation of the AC-20 motor called AC-23! The motor is wound to produce higher torgue compared to the AC-20 motor! Please check AC-2X motor page for more information!
AC 2x Family of Motors

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HPEVS AC Electric-Oil Cooled Dual Motor Drive Systems (AC-34x2/ AC-35x2)



We are proud to introduce our new line of Oil Cooled Dual AC motors that are now available.

With the introduction of oil cooling and with the assistance of an external oil pump and an heat exchanger to cool the oil, the continuous horsepower and torque from this motor will be higher than our standard steel frame motor line.

This motor has been designed with the marine industry in mind, but it can be adapted to any other mode of transportation. The motor includes a stainless steel frame with the shaft of the rotor being made of stainless steel too. With anodized aluminum end bells and junction boxes, the motor can stand up to a salt environment.

The motor is the same 8" diameter as the standard steel frame AC-3Xx2 motors but now with the use of a junction box, the total height is a little over 11".

The motor is totally sealed which allows for the oil to cool all the internal surfaces of the motor.

Please keep in mind that this new oil cooled design was made with the marine industry in mind. On a marine vessel there is a constant flow of cool lake/ocean water that is supplied to the heat exchanger to cool the oil effectively. If these new systems are installed in anything other than marine, performance results may vary based on how cool the oil is returning to the motor.

The weight of the AC-3Xx2 motor is around 195 pounds/88.45 kg.



» IMPORTANT «


DO NOT RUN THE MOTOR WITHOUT OIL!!





Link to power graphs:

Link to power graphs:



Please contact us with any questions you might have:

OEM customers, please


Of course all our systems are backed by an HPEVS and Curtis


Controller Option:

• 1236SE-5621 (48V 600A)
• 1238E-6521 (48-80V 550A)
• 1238R-7601 (72-96V 650A)
• 1239E-8521 (144V 500A) » 12 volt logic «



OC AC 3Xx2-32.26

B-Face

product image 2

1 1/8" Keyed Shaft
with a 7/8" Auxiliary Shaft



OC AC 3Xx2-32.28

B-Face

product image 2


1 1/8" Keyed Shaft Single Shaft





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