3-Phase AC Electric; Oil Cooled (AC-34/AC-35) Motor

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

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We Are Now Offering An AC Motor Controller Upgrade For The E-Z-GO RXV Golf Cars.
Our "Original" AC Drive System For Golf Cars Just Got A Whole Lot Better With The Introduction of an Automatic Parking Brake!!

HPEVS Golf Car Drive Systems

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

Now Our Golf Car Drive Systems Come With
a 5 Year Warranty!!
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

Mining Vehicle Systems

Specialty motors designed and built for your specific applications!





To get information, please click on "Details" tab below.
Utility Vehicle Systems


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




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Diagnostic and Troubleshooting Documentation.





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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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Hosts Mike Brewer and Edd China From The TV Show Wheeler Dealers Teamed Up with EV West to Install a HPEVS Drive System Into a 1985 Maserati Bi Turbo

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

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



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



We are proud to introduce our new line of Oil Cooled 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-3X 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-34 and AC-35 oil cooled motors are 95 pounds/43.9 Kg.

Link to power graphs:

Link to power graphs:




» IMPORTANT «


DO NOT RUN THE MOTOR WITHOUT OIL!!





Please contact us with any questions you might have:

OEM customers, please


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



Here is a list of the typical applications for which this motor can be applied:

» Marine
» Light Automotive
» Ground Support Equipment
» Mining
» Utility Vehicles


Controller Option:

• 1236SE-5621 (48V 600A)
• 1238E-6521 (48-80V 550A)
• 1238E-7621 (72-96V 650A)
• 1239E-8521 (144V 500A) » 12 volt logic «



OC AC 3X-32.26

Oil Cooled "B" Face

HPEVS oil cooled AC-34/AC-35 single keyed shaft and keyed auxiliary AC Electric Motor




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



OC AC 3X-32.28

Oil Cooled "B" Face

HPEVS oil cooled AC-34/AC-35 single keyed shaft AC Electric Motor




1 1/8" Keyed, Single Shaft






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