3-Phase AC Eletric Motor Drive Systems. Utility Vehicle,

Hydraulic Pump, Ground Support, Motorcycle, Golf Car

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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!




To get information, please click on "Details" tab below.
We Have Developed a New Generic Software Package

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


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

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.

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

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.

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

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




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

Diagnostic and Troubleshooting Documentation.






To obtain this information, please click on "Details" tab below.

144 Volt Automobile Systems

The Scion pictured has the first prototype!




Mining Vehicle Systems

Specialty motors designed and built for your specific applications!






To get information, please click on "Details" tab below.
96 Volt Automotive Systems

This is one of many systems available for auto conversions!




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

WHAT A RUSH!!






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


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





To get information, please click on "Details" tab below.
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Links to our main drive system page
HPEVS Drive Systems

Our are powerful, efficient and reliable. Find out what our drive systems can do for your project.
Power Graphs Link

The power graphs can be accessed by clicking on the above graphic.
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-Motor Drive Systems (AC-20/AC-23)



The AC 20 motor is 1 1/2" longer derivative of the AC 9/AC 15 motors. This motor produces 65 horsepower out to 5100 RPM and 82 ft./lbs. of torque at 96 volts/650 amps. This motor style is another very popular choice for motorcycles.

The AC 23 motor is same size as its sister motor the AC-20, but has been developed to produce more torque. On the same voltage and amperage as above (96 volt/650 amps), this motor produces 128 ft./lbs. of torque and 56 horsepower out to 3300 RPM.



The weight of this motor is around 60 pounds/27.2 Kg.

Link to power graphs:

Link to power graphs:



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

• Motorcycle
• Golf Car
• Utility Vehicles
• Hydraulic Pump
• Ground Support



Please contact us with any questions you might have:

OEM customers, please contact us


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



Included in the package with this motor is the controller of your choice based on battery voltage, a wiring harness (generic or specific based on your needs), a dash display and a controller mounting plate. Also available are #2 battery/motor cables. The #2 battery/motor cables are needed with all of our golf car systems. We offer these cables as an option to purchase, but you can make your own cables as well.



Controller Options are as follows:

• 1236SE-5621 (48V 600A)
• 1236SE-6521 (48-80V 450A)
• 1238E-6521 (48-80V 550A)
• 1238R-7601 (72-96V 650A)
• 1239E-8521 (144V 500A) » 12 volt logic «



AC 2X-03.27

C-Face Adaptor

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NEMA C-face end plate
7/8" shaft w/ 3/16" key way on drive end




AC 2X-04.01

Mining Vehicle Motor
10 spline
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C-face drive end
3/4" Shaft w/ 3/16" key way on brake end




AC 2X-06.06

Hydraulic Pump Motor

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SAE "A" Pump Adaptor
w/ SAE coupler integrated mounting plate





AC 2X-07.51

10 Spline

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Club Car Specific Motor
10 spline coupler with Graziano golf car style adaptor




AC 2X-07.52

19 Spline

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19 spline coupler with Graziano style adaptor






AC 2X-08.52

19 Spline

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Dana or Team Industries differential
Yamaha, E-Z-GO, Columbia, Tomberlin
golf carts




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