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hpevs golf car lithium battery pack eletric GT Ferrari 308 GTE EM parking Brake for golf cars HPEVS AC electric motors for golf cars HPEVS New software package HPEVS Curtis Controllers dimensional information HPEVS Oil Cooled AC Electric Motor for Marine Vessels EV West Factory Five build HPEVS Troubleshoot and Diagnostics HPEVS 144 volt Drive System HPEVS AC Electric Motor for Mining Industry HPEVS AC Electric motor, 96 Volt Drive System HPEVS AC electric motors for motorcycles HPEVS AC electric motors for industrial vehicles
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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AC 3X



The AC 35 motor is designed for use in multiple applications that are listed below. It is capable of producing 63 horsepower at 2900 RPM while delivering 129 ft-lbs. of torque at 96 volts, and 650 amps(1238-7601). It is available in several different configurations depending on your needs.

In addition to the AC 35 motor we are producing a second version of the same motor size and calling it an AC 34. This motor was designed to extend the "knee" out further into the RPM range. So with the same 96 volt/650 amp controller(1238-7601), the torque reduces a bit down to 107 ft-lbs. of torque while the horsepower increases to 65 horsepower. All of these subtle changes and the knee extending out to 3800 RPM.

The motor identifications on this page have been changed to "AC 3X" to reflect the addition of the AC-34 into the AC-35 family.



The weight of this motor is around 85 pounds/38.5 Kg.

Link to power graphs: AC-34 POWER GRAPHS!!
Link to power graphs: AC-35 POWER GRAPHS!!



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

• Utility Vehicles
• Light Automotive
• Ground Support
• Motorcycle
• Mining
• Hydraulic Pump



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



Controller Options are as follows:

• 1238-6501 (72V 550A)
• 1239E-7621 (96V 650A) » 12 volt logic «
• 1239E-8521 (144V 500A) » 12 volt logic «



AC 3X-16.02

19 Spline

product image 2

Dana/Spicer or
Team Industries differential



AC 3X-19.02

19 Spline

product image 2

Taylor-Dunn style differential
Enclosed (not water proof) housing


AC 3X-26.25

B-Face

product image 2

1 1/8" keyed shaft






AC 3X-26.34

B-Face Vented



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




AC 3X-27.25

B-Face

product image 2

1 1/8" keyed shaft
Enclosed (not water proof) housing




AC 3X-28.25

C-Face

product image 2

1 1/8" keyed shaft






AC 3X-28.34

C-Face Vented



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




AC 3X-31.08

SAE B Pump Flange


SAE B 15T Pump Coupler with Base




AC 3X-31.09

SAE B Pump Flange



SAE B 13T Pump Coupler with Base





AC 3X-31.58

SAE B Pump Flange



SAE B 15T Pump Coupler with 7/8" keyed Auxiliary Shaft & Motor Mounting Base


AC 3X-31.59

SAE B Pump Flange



SAE B 13T Pump Coupler with 7/8" keyed Auxiliary Shaft & Motor Mounting Base





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